U.S. patent application number 10/582617 was filed with the patent office on 2008-09-18 for high impact gate.
This patent application is currently assigned to EZI Automation Pty Ltd.. Invention is credited to Ian Gregory Phillips, Ronald William Phillips.
Application Number | 20080226391 10/582617 |
Document ID | / |
Family ID | 34658462 |
Filed Date | 2008-09-18 |
United States Patent
Application |
20080226391 |
Kind Code |
A1 |
Phillips; Ronald William ;
et al. |
September 18, 2008 |
High Impact Gate
Abstract
This invention relates to a security gate. It is particularly
related to a high impact gate able to withstand significant direct
impact of vehicles and maintain a secure location by prevention of
access by vehicle or foot. There is provided a high impact gate
system including a lower reinforced elongated structure and an
upper barrier means sized to extend across a roadway, and two
spaced reinforcing means able to be positioned to at least
partially overlap respective end portions of the elongated
structure when the lower structure is in a closed position
extending across the roadway, the reinforcing means able to provide
supporting reinforcement to the elongated structure when receiving
impact by vehicle or the like.
Inventors: |
Phillips; Ronald William;
(New South Wales, AU) ; Phillips; Ian Gregory;
(New South Wales, AU) |
Correspondence
Address: |
Jay S Cinamon;Abelman Frayne and Schwab
666 Third Avenue
New York
NY
10017-5621
US
|
Assignee: |
EZI Automation Pty Ltd.
Penrith, NSW
AT
|
Family ID: |
34658462 |
Appl. No.: |
10/582617 |
Filed: |
December 13, 2004 |
PCT Filed: |
December 13, 2004 |
PCT NO: |
PCT/AU2004/001749 |
371 Date: |
July 23, 2007 |
Current U.S.
Class: |
404/6 ; 49/49;
49/506 |
Current CPC
Class: |
E06B 11/045 20130101;
E01F 13/048 20130101 |
Class at
Publication: |
404/6 ; 49/49;
49/506 |
International
Class: |
E01F 13/04 20060101
E01F013/04 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 11, 2003 |
AU |
2003268602 |
Claims
1. A high impact gate system including a lower reinforced elongated
structure and an upper barrier means sized to extend across a
roadway, and two spaced reinforcing means able to be positioned to
at least partially overlap respective end portions of the elongated
structure when the lower structure is in a closed position
extending across the roadway, the reinforcing means able to provide
supporting reinforcement to the elongated structure when receiving
impact by vehicle or the like.
2. The high impact gate system of claim 1 wherein the lower
structure is formed by two spaced linear members joined by cross
bracing.
3. The high impact gate system of claim 2 wherein the spaced linear
members extend substantially horizontally with the diagonal bracing
being in a vertical cross section.
4. The high impact gate system of claim 3 wherein the spaced linear
members are I-beams with the ends of the I-beams being parallel
which together with plate sheeting form a front and back surface of
the lower structure.
5. The high impact gate system of claim 4 wherein the bracing is
cross diagonal bracing.
6. The high impact gate system of claim 5 wherein the cross bracing
extends between internal vertices of the I-beams.
7. The high impact gate system of claim 1 including a cantilevered
means having a foundation sized to be able to support the elongated
lower structure in a cantilevered manner.
8. The high impact gate system of claim 7 wherein the lower
structure includes a first end part mounted on a sliding mechanism
mounted on an elongated foundation located in line and below the
level of the lower structure and adjacent the roadway wherein the
distal second end of the elongated structure is cantilevered such
that the second end can extend at least partially over the roadway
to prevent unauthorized entry and the sliding mechanism allows
sliding along the foundation out of the way for authorised entry
along the roadway.
9. The high impact gate system of claim 8 wherein the first end
part of the elongated structure is captively connected in a sliding
manner to the reinforced base adjacent to the roadway to provide
the cantilever foundation.
10. The high impact gate system of claim 9 wherein the sliding
mechanism includes one or more rollers.
11. The high impact gate system of claim 10 wherein the two spaced
reinforcing means comprise pairs of opposed buttresses able to be
positioned to at least partially overlap respective end portions of
the elongated structure and closely fit on opposing sides of lower
structure when the gate in a closed position extending across the
roadway, the reinforcing means able to provide supporting
reinforcement to the elongated structure when receiving impact by
vehicle or the like.
12. The high impact gate system of claim 11 wherein the buttresses
are triangular buttresses.
13. The high impact gate system of claim 12 wherein each pair of
opposing buttresses is mounted on a common base.
14. The high impact gate system of claim 13 wherein the common base
of each pair of buttresses can be a weighty foundation means.
15. A high impact gate system including a lower structure and an
upper section mounted on the lower structure, the lower structure
sized to take the impact of a vehicle and the upper section
providing a vertical barrier, the lower structure formed by a boxed
structure having two spaced linear structures joined by cross
diagonal bracing to form a high impact barrier.
16. The high impact gate system of claim 9 wherein the spaced
linear structures are "I" beams and extend substantially
horizontally with the diagonal bracing being in a vertical cross
section.
17. The high impact gate system of claim 10 wherein the lower
structure includes a first end part mounted on a sliding mechanism
and allowing the distal second end to be cantilevered such that the
second end can extend at least partially over a roadway to prevent
unauthorized entry and the sliding mechanism allows sliding out of
the way for authorised entry along the roadway.
18. The high impact gate-system of claim 11 wherein the sliding
mechanism includes one or more ground engaging rollers.
19. The high impact gate system of claim 11 wherein the sliding
mechanism is mounted on a reinforced base adjacent to the
roadway.
20. A method of mounting a high impact gate, the method including
providing a gate including a lower structure sized to take the
impact of a vehicle, the lower structure formed by two spaced
linear structures joined by cross bracing to form a high impact
barrier; providing two sets of buttresses on either side of a
roadway upon which high security authorized access is required;
mounting the gate on a sliding mechanism extending between the two
sets of buttresses such that the buttresses provide a strengthening
aid for the high impact gate when the lower structure is struck and
the buttresses provide a linear control of the sliding
mechanism.
21. A method of mounting a high impact gate in accordance with
claim 20 wherein two sets of buttresses comprise pairs of opposed
buttresses able to be positioned to at least partially overlap
respective end portions of the elongated structure and closely fit
on opposing sides of lower structure when the gate in a closed
position extending across the roadway, the reinforcing means able
to provide supporting reinforcement to the elongated structure when
receiving impact by vehicle or the like.
22. A method of mounting a high impact gate in accordance with
claim 21 wherein the buttresses are mounted to solid weighted
bases.
23. A method of mounting a high impact gate accordance with claim
21 wherein the buttresses have an outwardly angled supporting
structure having a base portion further from the lower structure
than a top portion to provide the supporting structure while also
providing a deflection mechanism to impact vehicles.
Description
[0001] This invention relates to a security gate. It is
particularly related to a high impact gate able to withstand
significant direct impact of vehicles and maintain a secure
location by prevention of access by vehicle or foot.
[0002] Barriers of all types are used throughout the world to
prevent intrusion into restricted areas or retain personnel or
goods within restricted areas. Intruders include unwanted
personnel, animals, and vehicles. At times personnel and goods must
enter or leave restricted areas, resulting in the requirement for
at least part of the barrier to be movable. Movable barriers, such
as gates, doors, and movable portions of walls, allow passage out
of and into restricted areas. However they greatly reduce the
barrier effect and usually rely on being merely a demarcation line
requiring security personnel to patrol and form the effective
control barrier. Such an approach is not sufficient in these
times.
[0003] In granted U.S. Pat. No. 4,828,424 there is shown a vehicle
security barrier for selectively prohibiting a vehicle from
accessing a preselected area and for otherwise controlling
vehicular traffic. The security barrier comprises a base defining a
travelway over which a vehicle can be driven. The base comprises a
forward end portion defining an entryway whereby a vehicle enters
onto the travelway and a rearward end portion defining a travelway
exit whereby a vehicle exits the travelway. The security barrier
further comprises a security gate pivotally mounted on the base for
being selectively raised to obstruct the travelway and prohibit a
vehicle from exiting the travelway via the travelway exit.
Reciprocal actuating means are also provided for selectively
raising and lowering the gate. In the preferred embodiment, the
reciprocal actuating means comprises a first and second fluid
actuated cylinder. In another embodiment, sacrificial gate support
means are provided for absorbing the energy of a speeding vehicle,
thereby minimizing structural damage caused by the impact of such a
vehicle. However this patent only discloses the need for a
collapsible structure in order to perform the impact security
system. The system does not allow ready opening in combination with
high security.
[0004] Granted U.S. Pat. No. 5,624,203 describes a restraining
barrier which is positionable across a roadway in a deployed
position to define a restraining zone and may is moved vertically
to a passive position by first and second transport members
slideably mounted to first and second towers on either side of the
roadway. The barrier may is a rectangular net. First and second
cables each support an opposite end of the barrier to the said
first and second transport means, respectively, and also couple the
barrier to an energy absorber. The cable includes a support cable
which also responds to the impact of a vehicle as by breaking. The
cable is coupled to an operate indicator for producing a signal
indicating the vehicle impact. Clearly such a structure must be
lightweight in order to allow the ready lifting or require a
substantial movement mechanism if heavy duty structures are to be
used. Such a system therefore is not practical for high impact
security systems.
[0005] In granted U.S. Pat. No. 5,823,705 there is disclosed a
restraining barrier that is positionable across a roadway in a
deployed position to define a restraining zone and may is moved
vertically to a passive position by first and second transport
components. Opposite ends of the barrier are coupled to the first
and second transport components, respectively, and also couple the
barrier to first and second energy absorbers of differing
restraintive force in order stop vehicles of varying weight. A
support cable is coupled to an indicator for providing a signal
indicating vehicle impact. Additionally, a series of restraining
barriers and energy absorbers may provide a series of sequentially
differing restraintive forces to stop lightweight and heavier
vehicles. The barrier may is a net and include a lower wire below
the net assuring effective trapping of autos and trucks of a
variety of heights. However such a structure of restraining barrier
is not acting as a security system as it readily allows smaller
articles such as people to gain access to the restricted area.
Further, such net restraint systems do not provide a visual barrier
that looks substantial and has a deterrent value and the system
does not provide an effective barrier to a second vehicle that may
follow behind the first which is restrained in the net.
[0006] It is an object of the invention to provide a high impact
gate that is readily movable but provides high security.
[0007] It is also an object of the invention to provide a high
impact gate that overcomes or at least ameliorates the problems of
the prior art.
SUMMARY OF THE INVENTION
[0008] In accordance with the invention there is provided a high
impact gate system including a lower reinforced elongated structure
and an upper barrier means sized to extend across a roadway, and
two spaced reinforcing means able to be positioned to at least
partially overlap respective end portions of the elongated
structure when the lower structure is in a closed position
extending across the roadway, the reinforcing means able to provide
supporting reinforcement to the elongated structure when receiving
impact by vehicle or the like.
[0009] The high impact gate includes a lower structure sized to
take the impact of a vehicle, the lower structure formed by two
spaced linear structures joined by cross bracing to form a high
impact barrier. The spaced linear structures can be "C" beams and
the bracing can be cross diagonal bracing.
[0010] The spaced linear structures extend substantially
horizontally with the diagonal bracing being in a vertical cross
section. Preferably the cross bracing extends between internal
vertices of a vertical cross section of the spaced linear
structures to provide bracing in at least two directions.
[0011] The lower structure of the high impact gate can include a
first end part mounted on a sliding mechanism and allowing the
distal second end to be cantilevered such that the second end can
extend at least partially over a roadway to prevent unauthorized
entry and the sliding mechanism allows sliding out of the way for
authorised entry along the roadway.
[0012] The sliding mechanism can include one or more ground
engaging rollers mounted on a reinforced base adjacent to the
roadway.
[0013] Also there is provided a high impact gate including a lower
structure and an upper section mounted on the lower structure, the
lower structure sized to take the impact of a vehicle and the upper
section providing a vertical barrier, the lower structure formed by
a boxed structure having two spaced linear structures joined by
cross diagonal bracing to form a high impact barrier. The spaced
linear structures having "I" beams and extending substantially
horizontally with the diagonal bracing being in a vertical cross
section. The lower structure can include a first end part mounted
on a sliding mechanism and allowing the distal second end to be
cantilevered such that the second end can extend at least partially
over a roadway to prevent unauthorized entry and the sliding
mechanism allows sliding out of the way for authorised entry along
the roadway. The sliding mechanism preferably includes one or more
ground engaging rollers mounted on a reinforced base adjacent to
the roadway.
[0014] The invention provides a method of mounting a high impact
gate, the method including providing a gate including a lower
structure sized to take the impact of a vehicle, the lower
structure formed by two spaced linear structures joined by cross
bracing to form a high impact barrier; providing two sets of
buttresses on either side of a roadway upon which high security
authorized access is required; mounting the gate on a sliding
mechanism extending between the two sets of buttresses such that
the buttresses provide a strengthening aid for the high impact gate
when the lower structure is struck and the buttresses provide a
linear control of the sliding mechanism.
[0015] The buttresses can be mounted to solid weighted bases with
the buttresses having an outwardly angled supporting structure
having a base portion further from the lower structure than a top
portion to provide the supporting structure while also providing a
deflection mechanism to the impact of a motor vehicle.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order that the invention can be more readily understood
an embodiment will is described by way of illustration only with
reference to the drawings wherein:
[0017] FIG. 1 is an illustrative diagrammatic perspective view of a
high impact gate in accordance with a first embodiment of the
invention;
[0018] FIG. 2 is a front elevation of the high impact gate of FIG.
1 from the unsecured side;
[0019] FIG. 3 is an overhead plan elevation of the high impact gate
of FIG. 1;
[0020] FIG. 4 is a front elevation of a high impact gate of FIG. 1
from the secured side showing extra security walls protecting the
non roadway features of high impact gate when in a closed
position;
[0021] FIG. 5 is an overhead plan elevation of the high impact gate
of FIG. 4 with extra security walls;
[0022] FIG. 6 is an illustrative diagrammatic perspective view of a
high impact gate in accordance with a second embodiment of the
invention showing construction of lower structure;
[0023] FIG. 7 is a front elevation of the high impact gate of FIG.
6;
[0024] FIG. 8 is an overhead plan elevation of the high impact gate
of FIG. 6;
[0025] FIG. 9 is a vertical cross section of the upper section,
lower structure and base of the high impact gate of FIG. 6.
[0026] FIG. 10 is a partial vertical cross section of the lower
structure of the high impact gate of FIG. 9 showing a buttress and
lower structure construction; and
[0027] FIGS. 11A, 11B and 11C are side elevation of first buttress
and elevation of both first and second opposing buttresses and side
elevation of second opposing buttress of another embodiment of
opposing buttresses to the configuration of FIG. 9;
[0028] FIG. 12 is an illustrative diagrammatic perspective view of
a high impact gate in accordance with a third embodiment of the
invention having top electric fence;
[0029] FIGS. 13A and 13B is an elevation from unsecured side and a
cross sectional view through X-X of FIG. 13A of the high impact
gate of FIG. 12;
[0030] FIG. 14 is an overhead plan elevation of the high impact
gate of FIG. 13;
[0031] FIGS. 15A and 15B are a diagrammatic elevation from secured
side of lower structure of high impact gate showing its reinforcing
construction, and a plan view of FIG. 15A of a lower structure of
the high impact gate of FIG. 12;
[0032] FIGS. 15C 15D and 15E are a cross sectional view through X-X
of FIG. 15B showing the drive rack connection to the lower
structure of the high impact gate and a details of A and B of FIGS.
15A and 15C;
[0033] FIGS. 16A and 16B are an elevation and plan view of the rail
and foundations along which the lower part of the high impact gate
is supported and slides in accordance with the invention;
[0034] FIG. 16C is a cross sectional view through X-X of FIGS. 16A
and 16B.
PREFERRED METHODS OF PERFORMING THE INVENTION
[0035] Referring to the drawings, there is shown a high impact gate
system 11 including a lower reinforced elongated structure 21 and
an upper barrier means 31. The lower structure 21 and barrier means
31 are sized to extend across a roadway.
[0036] Two spaced reinforcing means 51 are positioned to overlap
respective end portions of the elongated structure 21 when the
lower structure is in a closed position extending across the
roadway. The two spaced reinforcing means 51 are two spaced sets of
opposing buttresses closely fitting with the elongated lower
structure. The reinforcing means 51 are able to provide supporting
reinforcement to the elongated structure 21 providing the strength
of the gate when receiving impact by vehicle or the like.
[0037] The lower reinforced elongated structure 21 and an upper
barrier means 31 of the high impact gate system 11 are supported in
cantilever manner by a foundation means 41 including a track to
allow sliding movement of the gate. A control and drive system
controls and drives the moving high impact gate.
[0038] The gate design as a minimum is capable of repelling a 7
tonne truck travelling at 80 KPH. The adopted stopping time is one
(1) second.
[0039] The fundamental parts of the high impact gate of the
invention include:
a) Lower Structure of Gate
[0040] The lower structure 21 is formed by a boxed structure having
two sets of parallel opposite spaced linear structures 22A, 22B,
22C and 22D joined together to form an elongated box of a usual
size of 4000.times.1000.times.300 millimetres. Cross diagonal
bracing 25A and 25B usually every 500 mm along its length is
included to form a high impact barrier. The size of the box
structure is primarily determined relative to the roadway to be
protected.
[0041] The lower structure is formed by two spaced linear members
joined by cross bracing. The spaced linear members extend
substantially horizontally with the diagonal bracing being in a
vertical cross section. In the embodiments the spaced linear
members 22A and 22B are I-beams with the ends of the I-beams being
parallel which together with plate sheeting form a front and back
surface of the lower structure 21. The cross diagonal bracing
extends between internal vertices of the I-beams.
[0042] The invention therefore provides a cantilevered style high
impact gate leaf weighing about 1.6 tons and comprising of two "I"
beams braced and designed to withstand the impact of a 4 ton truck
at 30 kilometres per hour. This can be scaled up to for example,
impact from a 10 ton truck at 80 kilometres per hour. The bracing
of the twin "I" beams with a cutting edge facing the unsafe side of
the gate is a novel design and capable of not only destroying a
vehicle on impact but also not yielding as a result of a
collision.
[0043] The heavy structure is sufficient to take the impact of a
vehicle.
b) Upper Section of Gate
[0044] The upper section provides a barrier means 31 and includes a
variety of forms that can be attached to the upper part of the
lower structure 21. As shown in FIGS. 1 and 6 there is an upright,
rigid, rectangular frame having spaced vertical bars. The vertical
bars are spaced sufficiently close to each other so as to prevent
access to a person passing through the upper section. The upper
section is of such a height that it is not readily climbed. In
addition, there are no cross-members that can serve as foot-holds
to aid climbing.
[0045] Another form of barrier means 31 is shown in FIG. 12 which
together with spaced vertical bars is a top electrified wire fence
to continue the electrified wire system if the adjacent
fencing.
c) A Cantilever Mounting Including a Foundation Means
[0046] The cantilevered means 41 has a foundation sized to be able
to support the elongated lower structure in a cantilevered manner.
The lower structure includes a first end part mounted on a sliding
mechanism mounted on an elongated foundation located in line and
below the level of the lower structure and adjacent the roadway
wherein the distal second end of the elongated structure is
cantilevered such that the second end can extend at least partially
over the roadway to prevent unauthorized entry and the sliding
mechanism allows sliding along the foundation out of the way for
authorised entry along the roadway.
[0047] The first end part of the elongated structure is captively
connected in a sliding manner to the reinforced base adjacent to
the roadway to provide the cantilever foundation and the sliding
mechanism includes one or more rollers.
[0048] The cantilever means of the high impact gate includes a
track to allow sliding movement of the gate. The principle of this
cantilever gate is a gate leaf supported by a front roller and
protected in a buttress and connected to the foundation and a rear
track via a roller trolley. The twin "I" beams can be held in a
cantilevered position in the roller trolley, which is held under an
inverted "L"-shaped track that is mounted rigidly in an elongated
base. By this arrangement, the gate pivots around a fixed base
roller.
d) Two Spaced Sets of Opposing Buttresses
[0049] Two spaced reinforcing means comprise pairs of opposed
buttresses able to be positioned to at least partially overlap
respective end portions of the elongated structure and closely fit
on opposing sides of lower structure when the gate in a closed
position extending across the roadway, the reinforcing means able
to provide supporting reinforcement to the elongated structure when
receiving impact by vehicle or the like.
[0050] The buttresses are triangular buttresses with each pair of
opposing buttresses is mounted on a common base. The common base of
each pair of buttresses is a weighty foundation means. Both sets of
gate buttresses and the back rail of the gate system are bolted
onto a solid concrete weighted base. The concrete base is
sufficiently engineered to provide solid support to the gate
mechanism and the two sets of buttresses and absorb vehicle
impact.
[0051] When the gate leaf is in the closed position, the end
section of the gate leaf is located in the other of the set of
buttresses on the other side of the roadway so as to withstand high
impact. The buttresses are arranged so that at least the lower
structure of the gate is snugly fitting within the sets of
buttresses to allow the sliding motion of the gate as it opens and
closes; but also to assist in providing high impact support to the
overall gate structure.
e) A Control and Drive System
[0052] The gate is powered by a three phase 4 kilowatt brake motor
and is capable of opening and closing speeds of about 1 metre per
second. The motor and electronics are housed within one of a pair
of angled steel buttresses from which the motor drives the gate
leaf via a steel rack.
[0053] The high impact gate forming the cantilevered sliding gate
systems of the invention provides an access controlled power
operated very high impact cantilevered vehicle sliding gate
systems. The vehicle sliding gate systems are to be controlled by
access control cards and voice communication systems as specified
and shown on the drawings. The objective of this project is to
safely restrict access by unauthorized personnel, cars, vans and
light, medium and heavy sized trucks.
[0054] Each cantilevered slide gate system comprises a single leaf
fully extending across the relevant road opening. These systems
maintain a height equal to the existing fences or walls. The
approximate erected height is 3000 mm. The vehicle gates are
equipped with an electric drive motor, gearbox, guide roller
systems, vehicle and pedestrian safety devices and power fail gate
locking brake system. The system is reliable, functional and is
based on the improved technology for the performance systems.
[0055] Each high impact gate of the invention can cover about a 5.0
metre road opening. Optimum road width is 4.0 metres. Each high
impact gate of the invention gate system has as standard a
monitored UPS system with full line conditioning and alarm
features. The UPS to be capable of up to 5.0 full operations during
power failure. Each high impact gate of the invention has a safety
cage/fence or tube as standard.
[0056] The gate system is capable of travel speeds of 1.5 metres
per second; however set up speed of 1 metre a second is
anticipated. The system is 100% duty cycle.
[0057] The system provides data and control cables to suit each
gate situation i.e. card system and voice communication. It also
provides a 240 volt 15 Amp circuit to power each sliding gate
system and associated equipment. This is from the nearest suitable
existing switchboard. All necessary conduit work associated with
the cabling is to all the relevant Australian Standards (i.e.
electrical orange, data white). The system allows conduit and cable
all equipment points at each gate intersection so as to
interconnect these locations.
[0058] The system substantiates the design crash calculations by
undertaking of independent mathematical calculations and crash
testing to T4 independent calculations and approval.
[0059] The systems provided overall are the latest in technology
and upgradeable without major parts redundancy. It is a formidable
barrier, heavier in construction. All operations are smooth. Each
gate system satisfies all safety requirements for entry and exit of
vehicles and the occasional pedestrian.
[0060] Examples of parts of high impact gate of the invention
forming a cantilevered sliding gate system include:
1 Sliding Gate System Metalwork
[0061] Each high impact gate of the invention gate system consists
of the following metal work items. One bottom gate leaf, one top
gate leaf, two buttress, one back rail, roller brackets, sheet
metal cover sets, sheet metal infill and fixings.
[0062] All items are manufactured utilizing heavy duty materials.
All items are fully seam welded. All items are sand blasted and
painted after manufacturing and cleaned as required to give a
smooth even finish. Paint colour to be advised.
[0063] The material sizes of one form of preferred embodiment
are:
Gate Frame 100.times.100.times.5 mm RHS
[0064] Bottom Gate Frame 310 I Beams & 150 Angle iron
Bottom Gate Buttress 100.times.100.times.5 mm RHS
Back Rail Twin C Channels
[0065] Gate Vertical Bars 26.9 O.D Round Tube or mesh
[0066] The maximum spacing between all vertical bars are 125
mm.
[0067] The erected height of each gate system is usually about 3000
mm. This should consist of 200 mm maximum ground clearance and 2800
mm of gate height. Each top gate frame is 1600 mm from the top of
the gate frame to the bottom of gate frame. All vertical bars are
fully welded. The width of each gate opening does not exceed 5000
mm. Each gate system is constructed such that it is a bolt together
assembly.
[0068] The main equipment buttress consists of four vertical 100 mm
squared RHS sections connected top and bottom to form a solid full
height support tower and equipment enclosure. Each buttress height
is 1200 mm, the width should is 1200 mm. The motor buttress then is
sheet metal clad, the front face is covered by the use of a full
height hinged service access door, and this door is key lockable
using skeg endorsed padlock. The gate main buttress service door
always is on the secure side of the property. All sheet metal
covers and doors are a minimum of 5 mm thick.
[0069] The gate system is bolted to its relevant concrete footing
using M 24 .mu.m.times.125 mm chemsets (zinc plated).
2 Drive Rack
[0070] Each gate system uses drive rack for power transfer. The
drive rack used with each gate system is zinc plated mild steel.
The drive rack is welded to the underside of the main member of the
sliding gate frame. All drive rack is inverted so as not to collect
grit and dirt. This rack directly meshes with the motor output
shaft drive cog. The rack is 50 mm wide.
3 Drive Cog
[0071] Each gate drive motor gearbox has a brass drive cog fitted
directly to the motor/gearbox output shaft. This drive cog is
keyway fitted and is no larger than 120 mm in diameter. The bore
size of this drive cog should is a minimum of 40 mm.
4 Guide Rollers
[0072] Each gate system is fitted with gate buttress guide rollers
(total 8 of). Two mounted to suit the top rail of the gate and two
to suit the bottom rail. Each of these rollers is fitted with two
sealed bearings. The roller size is a minimum of 100 mm.times.150
mm diameter. These rollers should is made from black UV resistant
nylon. Each guide roller has a 25 mm diameter mounting
pin/bolt.
5 Main Rollers
[0073] Each gate system is fitted with two main rollers and two
back trolley rollers. The front main roller body is zinc plated
mild steel. Each roller is fitted with two sealed bearings and a 30
mm mild steel axle. The minimum load rating on the main roller is
80 tonnes. The two back trolley rollers each consist of a sealed
bearing fitted to a zinc plated steel tyre. A rating each of 40
tonnes is a minimum requirement for each back trolley roller.
6 Drive Motor and Gearbox
[0074] Each cantilevered slide gate motor gearbox drive unit is a 3
phase, 4 kW unit. These motor gearbox units are IP56 rated and are
of true industrial grade and quality. This drive motor gearbox unit
is rated for a minimum frequency of 100 operations per hour and/or
100.degree. duty cycle. The drive motor system is suitable for the
speeds as described under section 9 below with the cog size as
described under section 3 above. The motor gearbox drive system is
to utilize and inbuilt safety mechanism to protect the unit from
excessive drive torque. A power fail brake system or lock is built
into this drive motor gearbox system. This locks the gate in the
closed position and locks the gate during power fail. The motor
gearbox and platform assembly bolt together and this assembly is
set up to engage the drive racking which is mounted on the
horizontal main member of the gate frame.
7 Electronic Equipment Enclosure
[0075] Each gate control logic module is housed within an IP56
steel or poly enclosure, size is no less than
800.times.600.times.200 mm. Each enclosure has a hinged door and
key locking system. Each of these enclosures house a true PLC,
frequency inverter, power supply, loop detector, GPO, test button,
buzzer and misc items such as duct, cable etc. to suit the relevant
sliding gate system electronic control.
[0076] All equipment mounted within these enclosures is installed
on din rail. All cabling within each enclosure where practical is
trunked within duct. No equipment is mounted on the enclosure door.
All cable penetrations have proper glands fitted. An electrical
schematic is installed within a plastic sleeve on the inside of the
enclosure door.
[0077] All gate logic control modules are installed within the
protection of the sliding gate main tower adjacent to the drive
motor location. Each equipment enclosure door is numbered and a
site location is nominated. The distribution point for the relevant
power feed also is nominated on this door. All labels are screw
fixed trefolite type.
[0078] All work within these cabinets, conforms to all the relevant
Australian Standards.
8 Programmable Logic Controller--PLC
[0079] Each gate motor drive system is PLC controlled utilizing a
compact PLC. Each PLC is fully programmable and has a minimum total
of 14 inputs and outputs including 8 outputs and 6 inputs. These
control units are capable of being reprogrammed on site after
installation for possible further ancillary functions. Each PLC
must be expandable if required and offer possibilities of
networking. All safety systems described is constantly monitored by
this PLC system. The background for the proposed program utilized
on each gate PLC is field tried and proven for a minimum of five
years.
9 Frequency Inverter
[0080] A frequency inverter is utilized on each gate system. This
frequency inverter is utilized for the control of gate operating
speeds and control the ramp up and ramp down settings. These units
are suitable for use on up to 4 kw motor ratings. Each frequency
inverter is set up to display reliable speeds of 2000 mm per second
gate travel. Each frequency inverter has a built in program keypad
which should remain with the gate system after programming and
commissioning. A breaking resistor is also a standard requirement
for this system.
10 Inductive Loop Detector
[0081] Each sliding gate system include within the relevant
equipment enclosure a single channel inductive loop detector; this
loop detector have two inductive loops connected to it so as to
provide vehicular safety and auto closing. The cable tails from the
two inductive road loops have conduit into the equipment enclosure
within the confines of the main tower to the relevant loop
detector.
11 Power Supply
[0082] A switching power supply is installed in each gate system
control logic module. This power supply is din rail mounted and
suitable for industrial applications. These power supplies are of a
regulated type i.e. voltage drop off with over current.
12 Test Button
[0083] Each equipment module has a din rail mounted test button
installed within the enclosure. This button has a trefolite test
button label mounted below it. This button when depressed will
pulse the gate system open. Closing is automatic through the safety
systems and or time out facility.
13 Miscellaneous Items
[0084] Each gate control logic module has a GPO fitted. This item
will need to be din rail mounted.
14 Safety Buzzer
[0085] Each sliding gate system is fitted with a suitable low
voltage, audible buzzer to announce gate movement. The buzzer is
controlled by the gate system PLC. The buzzer must sound 1 second
prior to gate movement and continue to pulse sound at 1 second
intervals during the full open and close cycle for the relevant
gate.
[0086] Each gate buzzer is fitted to the outside of the control
equipment enclosure. This buzzer is designed to warn pedestrians
who may is close to the gate system that the gate is about to move.
This buzzer is not to be excessive in noise level.
15 Safety Flashing Light
[0087] Each sliding gate system is supplied with two flashing red
low voltage strobe lights, which is fitted to the top of the main
gate housing. This strobe light will is controlled by the gate
system PLC. It is to flash 1 second prior to gate movement and
continue to flash during the full open and close cycle for the
relevant gate. All cables from the strobe unit have conduit to
within the main gate housing to the control logic enclosure
module.
16 Uninterruptible Power Supply--UPS
[0088] An uninterruptible power supply is the standard power fail
override facility for this gate system. The system offers alarm
outputs as required. i.e. low battery, etc. The system should also
offer full power filtration. It is expected that 30 full operations
is the standard capability for this system.
17 Safety Photo Electric Beams
[0089] A series of fail safe photo electric beams are utilized to
provide adequate safety measures for pedestrians. Each sliding gate
system has four photo electric safety beam sets fitted. These beams
must be transmitter to receiver type and is proven in performance
and reliability. All PE beams must be constantly monitored by the
relevant gate PLC. Should a PE beam unit fail, the system must
recognise this and shut down the gate system immediately.
Similarly, should a beam is blocked by a person or vehicle the
system should stop and re open and wait until clear, prior to any
gate closure. All beams are set up as safety reopen.
18 Proximity Sensors
[0090] Two cylindrical proximity sensors and bars are utilized to
determine and control the gate position. These proximity sensors
are set up to detect the proximity bars as secured to the bottom
rail of the gate system. These provide position sensing for the
gate system. The cabling for the proximity sensors are installed in
conduit up and into the control logic enclosure. The proximity
sensors are set up within the confines of the lockable main
equipment tower. These requirements are so that the gate system
does not become lost or confused.
19 Safety Inductive Loops
[0091] Each sliding gate system has two in ground inductive loops
cut into the existing road surface. These loops will is to provide
vehicular safety and auto closing. The two loops are connected into
the inductive loop detector within the equipment enclosure. Each
loop should is set back at least 1000 mm from the edge of the
relevant sliding gate and cover at least 60% of the road width.
20 Safety Fence and General Fencing
[0092] Each sliding gate system as installed have the existing
fencing connected to the new gate buttress to secure the site
properly. This fencing matches that which exists. An additional
section of fence is installed to section off the back rail gate
travel area. This safety fence is full height and matches that
which exists i.e. cyclone mesh style. This enclosure is 1 metre
wide and has a padlock style swing gate fitted for service access
reasons. This gate is padlocked upon commissioning of the automatic
gate by the end user.
21 Concrete Foundation
[0093] Each sliding gate system has substantial concrete footing
installed to suit the relevant gate. All conduit entries are set
into the correct position prior to the concrete installation. All
concrete is minimum 25 mpa. This work is performed by relevant
trades persons to all Australian Standards. The concrete
foundations are installed accurately as to the engineering
design.
22 Equipment Pedestals
[0094] Each sliding gate system has two dual height equipment
pedestals. These pedestals are 2000 mm high, flange mounted and
constructed of 100 square RHS. Each pedestal has a weather shrouds
made from folded sheet metal. All pedestals are hot dip galvanized
and painted safety yellow. The equipment shroud plate is 300 mm
square, this to suit the intended proximity card reader and
intercom station installation. One pedestal is for the entry
location and one for the exit location. The pedestals are
positioned on the driver's side edge of the road and is not closer
than 4 metres from the face of the relevant automatic sliding gate
system.
23 Bollards
[0095] Each sliding gate main housing will have two protective
bollards installed to avoid damage to the main housing by vehicles.
These would be placed within 500 mm of the main housing on both
vehicle approach sides. Each protective bollard is heavy duty in
construction. Each bollard should is 1000 mm high and constructed
using heavy duty wall 200 mm pipe, these is flange mounted and
capped. Each bollard is hot dip galvanized and painted safety
yellow.
[0096] Whilst the gate mechanism is designed to open and close in a
sliding manner via switches and electrical control signals sent via
access control systems, the system is novel in the manner in which
it provides safety to both vehicles and pedestrians. The safety
devices includes flashing lights, audible warning buzzer, two
inductive loops for detection of vehicles and two photoelectric
beams for detection of pedestrians.
[0097] It can therefore is seen that the gate system provides an
improved structure that can withstand high impact buy a vehicle.
This is provided in the preferred embodiment by the use of "I"
beams and the engineering of the diagonal internal bracing which is
unique.
[0098] The high impact gate of the invention is unique because it's
the only product on the market that meets all threats (see above).
It is a high-speed cantilever design capable of 2.0 metres per
second opening and closing speeds. It is the only product capable
of providing operations with full safety. It appears to be the only
Australian product to be crash tested that will meet and exceed US
K12 Standards. Therefore it is the only product that will stop a
7-ton truck at 80 kilometres per hour.
[0099] The high impact gate system is the only product that does
not require major road works involving the excavation of the
driveway to install pits, formwork and concrete works, drainage
systems, water pumps, hydraulic rams etc. Problems with pits
include, stagnate water, mud deposits, exposure of metals to
moisture, and more frequent servicing requirements. The concrete
foundations for the high impact gate of the invention are an
integral part of the gate design and provide strength and
stabilization qualities against impact. However the foundations are
primarily off the roadway. The weight of the concrete is
approximately 20 tonnes.
[0100] The high impact gate of the invention is an economical
solution when compared with combinations of devices such as raising
bollards/raising steps and indeed conventional gates. Unlike
raising steps the high impact gate of the invention provides
anti-ram protection upon entry or exit unlike raising steps. The
high impact gate of the invention may have the safety devices
manually overridden for emergency operation.
[0101] The automation high impact gate of the invention includes
Uninterruptible Power Supply (UPS) systems.
[0102] Some important features of the high impacts gate system are
that it has anticipated strength to repel 15 tonnes at 100 KPH.
Strength of structure and components (stopping power) enables
stopping of all perceived threats from pedestrians, motor bikes,
cars, light trucks to heavy trucks. Designed for high level
stopping performance of heavy trucks (1 second anticipated).
[0103] There is an extreme duty cycle for peak periods and busy
applications (100% duty cycle with reliability). Maximum levels of
safety systems for high level proactive safety performance (not
reactive style systems). Full override facilities are provided via
PLC programs for safety overrides, fire alarms, and lock down
modes. PLC controlled for systems up grade and flexibility.
Standard override to disable safety switches (lockdown mode). Gate
travel speeds of up to 2.0 metres a second, speeds being variable.
The system operation is smooth, efficient and well balanced.
[0104] The design is a modular design capable of 1 day
installations or relocation (rapid deployment).
[0105] The system also provides a highly visible deterrent when in
the closed position. It covers up to 5.5 metre road width with no
road tracks (optimum size 3.5) i.e. for single lane applications.
This is allowed by the fill cantilevered design which is attached
to the back rail system at all times i.e. systems cannot be
dislodged or fall over. The system is designed to be installed
above ground so minimising in ground environmental problems i.e.
less service drains or pumps not required. Twin buttress style
design to fully secure the system when in the closed position
(penetration in end buttress 1 metre). The system is designed to
repel attack or impact from both directions, not just one
direction, like rising step barriers. A brake motor is utilised for
positive locking of the system when closed. A 240 volt supply is
the power requirement to the UPS. The UPS provides 240 volts to the
gate inverter which then supplies 415 volts to the brake motor (so
power feed is cost effective). Each system has a standard
uninterruptible power supply with up to 30 operations available
during power outages (true stand alone capacities). The system can
be programmed to fail closed or open after the UPS is spent, or as
in some cases, lock as soon as power fails this then is controlled
by key switches in remote locations Potential for blast mitigation
with twin skin design on system. All systems have as standard,
sheet metal or aluminium cladding. Thus making each system
aesthetically more pleasing stronger and, importantly, safer by
reducing pinch points. All systems are sandblasted and painted to
the customers requirements. Safety and anti tamper tubes are
available to further enhance each system. It should be understood
that the above description is of a preferred embodiment and
provided by way of illustration only. Clearly a person skilled in
the art would understand variations to the invention without any
inventive element and such are included within the scope of the
invention as defined in the following claims.
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