U.S. patent number 3,842,994 [Application Number 05/417,894] was granted by the patent office on 1974-10-22 for train of freight cars.
This patent grant is currently assigned to Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.. Invention is credited to Karl Folser, Josef Theurer.
United States Patent |
3,842,994 |
Theurer , et al. |
October 22, 1974 |
TRAIN OF FREIGHT CARS
Abstract
In a train of like freight cars used, for instance, for removing
rubble from a ballast cleaning machine, each car comprises a
storage bin defining a top opening delimited by two end edges. A
conveyor means having two ends bridges the top opening in the
direction of track elongation. The conveyor means has a plurality
of conveyor portions including an endless conveyor band mounted for
traveling in a conveying path extending in this direction. The
endless conveyor band is driven in this path in reversible
directions, and at least some of the conveyor portions are mounted
for movement so that a selected conveyor means end projects beyond
a respective end edge and into overlapping relationship with an
adjacent end of one of the conveyor means ends of an adjacent
freight car.
Inventors: |
Theurer; Josef (Vienna,
OE), Folser; Karl (Linz-Urfahr, OE) |
Assignee: |
Franz Plasser
Bahnbaumaschinen-Industriegesellschaft m.b.H. (Vienna,
OE)
|
Family
ID: |
3486448 |
Appl.
No.: |
05/417,894 |
Filed: |
November 21, 1973 |
Foreign Application Priority Data
Current U.S.
Class: |
414/339; 198/352;
414/503; 414/334 |
Current CPC
Class: |
B61D
7/32 (20130101); B65G 67/10 (20130101); E01B
27/00 (20130101); E01B 27/06 (20130101); E01B
2203/038 (20130101); E01B 2203/032 (20130101) |
Current International
Class: |
E01B
27/06 (20060101); E01B 27/00 (20060101); B61D
7/00 (20060101); B61D 7/32 (20060101); B65G
67/10 (20060101); B65G 67/02 (20060101); B65g
067/08 () |
Field of
Search: |
;214/41,42R,42B,16R,83.26,520 ;198/83 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Sheridan; Robert G.
Attorney, Agent or Firm: Kelman; Kurt
Claims
What we claim is:
1. A train of at least two like freight cars arranged in
succession, each of the freight cars comprising a storage bin
defining a top opening delimited by two end edges spaced apart in
the direction of the elongation of a track whereon the train is
adapted to move, a conveyor having two ends and means bridging the
top opening in said direction, the conveyor means having a
plurality of conveyor portions including an endless conveyor band
mounted for traveling in a conveying path extending in said
direction, means for driving the endless conveyor band in
reversible directions in said path, at least some of the conveyor
portions being mounted for movement so that a selected one of its
ends projects beyond a respective one of the end edges of the top
opening and into overlapping relationship with an adjacent end of
the conveyor means of an adjacent one of the successively arranged
freight cars, and drive means for so moving the conveyor portions.
2. The train of claim 1, wherein the conveyor portions are mounted
for displacement in the direction of track elongation
for said movement. 3. The train of claim 1, wherein the conveyor
portions
are mounted for pivoting the selected ends thereof for said
movement. 4. The train of claim 1, wherein the conveyor means
consists of two of said conveyor portions each including an endless
conveyor band and arranged in overlapping relationship, and further
comprising a guide rail for each of the conveyor portions, the
conveyor portions being movably mounted on the guide rails, each of
the guide rails bridging the top opening in the direction of track
elongation, and each of the guide rails having two ends
substantially at the level of the end edges of the top
opening and a center portion at levels different from each other.
5. The train of claim 4, wherein the level of the center portion of
one of the guide rails is above the level of the end edges and the
level of the center portion of the other guide rail is below the
level of the end
edges. 6. The train of claim 1, wherein the conveyor means consists
of two of said conveyor portions each including an endless conveyor
band, and further comprising a level guide rail means and a
carriage for each conveyor portion movable on the guide rail means,
each conveyor portion
being pivotally mounted on its carriage intermediate the ends
thereof. 7. The train of claim 6, wherein the guide rail means is a
guide rail
common to both carriages. 8. The train of claim 6, further
comprising a drive for each of the carriages whereby the carriages
are self-propelled.
. The train of claim 1, wherein the conveyor means consists of two
of said conveyor portions each including an endless conveyor band,
the conveyor portions being of substantially the same length and
the combined lengths of the conveyor portions corresponding
substantially to the length
of the freight car. 10. The train of claim 1, wherein the conveyor
means consists of three of said conveyor portions with a common
endless conveyor band, one of the conveyor portions being a
stationary center portion and two of the conveyor portions being
independenly pivotal in respect of the
center portion. 11. The train of claim 10, wherein the drive means
for moving the two conveyor portions for pivoting about an axis
transverse to the direction of track elongation is a hydraulic jack
means associated
with each of the two conveyor portions. 12. The train of claim 10,
wherein the conveyor means is substantially of the same length as
the freight car.
3. The train of claim 1, wherein the conveyor portions mounted for
movement are each arranged for independent movement, each conveyor
portion having a conveying plane and the independently movable
conveyor portions being movable for positioning the conveying plane
thereof to enclose an
acute angle with the plane of the track. 14. The train of claim 1,
wherein
the drive means includes a cable winch. 15. The train of claim 1,
wherein
the drive means includes a rack-and-pinion drive. 16. The train of
claim
1, wherein the drive means includes hydraulic jack means. 17. The
train of claim 1, further comprising deflector means associated
with the conveyor means, the deflector means being arranged to
deflect material on the
conveyor means to selected regions of the bin. 18. The train of
claim 17,
further comprising servomotor means for moving the deflector means.
19. The train of claim 18, further comprising remote control means
for the drive means and the servomotor means.
Description
The present invention relates to improvements in a train of at
least two like freight cars arranged in succession, for instance
for the removal of rubble coming from a ballast cleaning machine.
In known trains of this type, each freight car comprises a storage
bin defining a top opening delimited by two end edges spaced apart
in the direction of the elongation of the track whereon the train
is adapted to move, and a conveyor means bridging the top opening
in this direction is provided for transporting the rubble or other
material.
In one known apparatus for removing the rubble produced during
cleaning of the track ballast, several telescopingly movable
conveyors are mounted on a transport car for movement from location
to location in their retracted position while they are moved apart
to reach several rubble storage cars at the operating location.
This arrangement has the disadvantage that conveyance of rubble or
like material is possible only in a single direction and,
furthermore, when storage cars are removed from, or added to, the
train, guide rails, conveyor bands and auxiliary mechanisms must be
removed or added, thus making operations relatively cumbersome and
difficult.
It is the primary object of this invention to overcome these
disadvantages and to provide conveyor means of the first-described
type which may be readily assembled with the train under various
operating conditions and which greatly increases the efficiency of
removal.
This and other objects are accomplished in accordance with the
invention with a conveyor means which has a plurality of conveyor
portions including an endless conveyor band mounted for traveling
in a conveying path extending in the direction of track elongation,
and means for driving the endless conveyor band in reversible
directions in this path. At least some of the conveyor portions are
mounted for movement so that a selected one of its ends projects
beyond a respective one of the end edges of the storage bin top
opening and into overlapping relationship with an adjacent end of
the conveyor means of an adjacent one of the successively arranged
freight cars. Drive means is provided for so moving the conveyor
portions. The conveyor portions may be mounted for displacement in
the direction of track elongation or for pivoting the selected ends
thereof for this movement.
This arrangement multiplies the usefulness of the apparatus and
makes it most adaptable to various operating conditions. In the
first place, such a conveyor means may be used for transporting
material, such as rubble, in both directions. Also, a train
consisting of freight cars with such conveyor means may be
lengthened or shortened at will, or separated at any desired point,
with no additional work. This is particularly useful in connection
with high-efficiency ballast cleaning machines which often require
two-directional transport of material simultaneously. The
movabilility of the conveyor portions and the reversibility of the
driving direction of the endless conveyor band make a uniform
loading of the entire storage bin on each car possible. No
protective devices need be mounted between the individual cars
since the conveying direction of the conveyor band is reversed at
the start of transporting the material to the next succeeding car
until the conveyor means end has been moved into the overlapping
relationship so that it covers the interspace between the cars.
Thus, no interruption of the loading operation is required during
the transition from one to the next car. Loading of the individual
cars can be effected at any point of the train, for instance the
first or the last car of the train, or any intermediate car, may be
loaded first without requiring any additional work. For example,
loaded cars may be uncoupled and taken away without interrupting
the operation and empty cars may be coupled to the train. Thus,
uninterrupted loading operations are possible for an extended time
span.
The above and other objects, advantages and features of the present
invention will become more apparent from the following detailed
description of certain now preferred embodiments thereof, taken in
conjunction with the accompanying drawing wherein
FIG. 1 is a side elevational schematic view of a work train
including a ballast cleaning machine and like freight cars arranged
in succession and carrying loading and transfer conveyor means;
FIG. 2 shows one of the freight cars of FIG. 1 on an enlarged
scale;
FIGS. 3 to 6 are side elevational views showing the cars with the
conveyor means in different operating positions;
FIG. 7 is a similar side elevational view showing deflector means
in cooperation with the conveyor means for loading the storage bins
on the cars;
FIG. 8 is a view similar to that of FIG. 2 of another
embodiment;
FIG. 9 is also a view similar to that of FIG. 3 of yet another
embodiment; and
FIGS. 10 to 13 are views similar to those of FIGS. 3 to 6, showing
the cars of FIG. 9 with the conveyor means in different operating
positions.
Referring now to the drawing and first to FIG. 1, a work train
movable in the direction of arrow 2 on track 1 is shown to include
a ballast cleaning machine 3 of any useful design and several like
freight cars 4, 5, 6, 7 arranged in succession. Each freight car
comprises a storage bin defining a top opening delimited by two end
edges spaced apart in the direction of the elongation of track
1.
The schematically illustrated ballast cleaning machine, which forms
no part of the invention, is shown to comprise bucket conveyor 8
which removes ballast 9 and transports the removed ballast to a
vibratory screen where clean ballast is separated from rubble. The
clean ballast is returned to the track bed in a manner forming no
part of this invention while the rubble is moved away by elongated
conveyor bands including a transfer conveyor 10 to loading and
transfer conveyor means 13 of freight cars 4, 5, 6 and 7.
Mains (schematically shown in broken lines) connect the drives for
the conveyor means of each freight car to common power source 11
and remote control 12.
It will be clearly understood by those skilled in the art that the
train may comprise more or fewer freight cars than the four shown
in FIG. 1, and the cars may be loaded seriatim or at random,
beginning with the car next to the ballast cleaning machine.
Particularly where a high-efficiency ballast cleaning machine is
used, a further train of successive like freight cars may be
coupled to machine 1 at the rear thereof, seen in the working
direction, so that no interruption is encountered in the operation
and all rubble may be continuously removed as it is produced by the
cleaning machine, in which case another elongated conveyor 14 may
transfer the rubble to the conveyor means of the cars of the
further train.
Car 7 is shown on an enlarged scale in FIG. 2 which illustrates a
particularly sturdy and operationally dependable conveyor means
construction.
Car 7 includes a platform frame 15 mounted on undercarriages 16, 16
for mobility on track 1. Storage bin 17 is carried by frame 15 and
defines a top opening delimited by two end edges 19, 19 spaced
apart in the direction of track elongation, the bin having two
discharge chutes 18, 18 for removing any particulate material, such
as ballast or rubble, received in the bin upon opening and proper
adjustment of the chutes.
Two guide rails 20, 21 bridge the top opening of storage bin 17 in
the direction of track elongation and each of the guide rails has
two ends substantially at the level of end edges 19, 19 of the top
opening and a center portion at levels different or staggered from
each other, the level of the center portion of guide rail 20 being
below the level of the end edges and the level of the center
portion of guide rail 21 being above the level of end edges 19, 19.
The conveyor means 13a consists of conveyor portions 22, 23 each
including an endless conveyor band and arranged in overlapping
relationship. The conveyor portions are mounted for displacement in
the direction of track elongation on the guide rails, rollers or
equilvalent friction-reducing means 24, 25 supporting conveyor
portion 22 on guide rail 20 while rollers 26, 27 support conveyor
portion 23 on guide rail 21. In this manner, the conveyor portions
may be so displaced that a respective one of their ends 28, 29
projects beyond a respective end edge 19 of the top opening and
into overlapping relationship with an adjacent end of the conveyor
means of an adjacent freight car, see, for instance, car 5 in FIG.
1. The overlapping relationship places the conveyor means ends on
adjacent cars in superposed position, i.e., one above the
other.
The illustrated drive means for the displacement of the conveyor
portions on their guide rails includes a cable or chain drive 30,
31 for the respective conveyor portions, the cable or chain being
driven by motor means 32, 33, respectively, which may be a
hydraulic motor. The power-driven winch 32, 33 for the respective
conveyor portion 22, 23 is arranged in the region of one end of a
respective guide rail while a guide roll guides the respective
cable or chain in the region of the other end of the respective
guide rail. Thus, cable 30 has one end linked to conveyor portion
22 in the region of its roller 24 and is trained over a guide roll
to power-driven winch 32 whence it is trained over a guide roll at
the other end of the car and led into the region of roller 25 where
the other cable end is linked to conveyor portion 22. Similarly,
cable 21 has one end affixed to conveyor portion 23 at roller 26,
is trained over a guide roll to power-driven winch 33 and led back
over another guide roll at the opposite end into the region of
roller 27 where it is linked to conveyor portion 23.
Thus, when the winches are rotated, the conveyor portions 22, 23
are displaced in the directions of doubleheaded arrows 34, 34,
depending on the direction of rotation of the winches. Furthermore,
each conveyor portion is associated with a further drive 35, 36 for
reversing its direction of displacement. Using two separate guide
rails for the conveyor portions makes the operation of the conveyor
means very simple and permits rapid changes in the direction of
material conveyance and transfer.
The control for the operation of drives 32, 33 and 35, 36 is shown
only schematically, the power and rotational control being
transmitted thereto from main lines 39, 40 by branch lines 37, 38
connecting the respective drives to the main lines. If desired,
each car may carry its own power source and control but it will be
preferred to control all drives from a common power source 11 and a
remote control 12 on ballast cleaning machine 3. It will be useful
to incorporate limit switches in the control to limit the
displacement of the conveyor portions on their guide rails when the
conveying direction of conveyor means 13 is reversed, such limit
switches being positioned in the region of the guide rail ends so
that the operator need not manually control the conveyor means
displacement.
Complete bridging of the storage bin top opening by conveyor means
13 will be assured in the illustrated embodiment by providing two
conveyor portions of substantially equal length, with their
combined length corresponding substantially to length L of the
freight car, including its couplings, when the two conveyor
portions are in operating position, as seen in FIG. 1 at cars 4 and
5, or in the various operating positions shown in FIGS. 3 to 6.
When it is desired to convey material over a succession of cars 7,
as shown in FIG. 3, in the direction of arrow 41, conveyor portions
23 are displaced in a direction opposite to the conveying direction
until the front ends (as viewed in the conveying direction) of
conveyor portions 23 are positioned in the range of front end edge
19 of the associated storage bin top opening. At the same time, the
second conveyor portions 22 are displaced in the conveying
direction until their rear ends project beyond the associated
freight car to be superposed over the front ends of the conveyor
means in the next adjacent car while their front ends subtend the
rear ends of the other conveyor portion on the same car, thus
forming a continuous length of conveyor means bridging all the
cars.
In the operating position of the conveyor means shown in FIG. 4,
the conveyor portions are oppositely displaced so as to convey
material over all the cars in the direction of arrow 42.
On the other hand, in the operating positions illustrated in FIGS.
5 and 6, the storage bin 17 of intermediate car 7 is being loaded
by displacing conveyor portions 22, 23 of this car so that the
overlapping conveyor portions are fully within the top opening of
this bin, i.e., inwardly spaced from the end edges of the bin. One
half of the bin is first loaded by moving the endless band of
conveyor portion 23 against the general conveying direction (FIG.
5). After this half has been filled, the conveying direction of
this endless band is reversed so that it travels in the general
conveying direction (FIG. 6), thus transferring the material to
conveyor portion 22 from whose end, which is inwardly spaced from
end edge 19, the material drops into the other half of the bin.
After this half is loaded, the conveying direction of the endless
band of conveyor portion 22 is reversed so as to load the center
part of the bin while this conveyor portion is continuously or
intermittently displaced in the general conveying direction. Thus,
after the bin has been completely filled, the forward end of
conveyor portion 22 has been displaced sufficiently for it to
overlap the rear end of the conveyor means of the next adjacent car
so to transfer the material thereon thereto upon reversal of its
conveying direction. The next car is then loaded in the same
manner.
As schematically shown in FIG. 7, to assure proper feeding and
conveying of the material during loading, deflectors 43 may be
associated with each conveyor portion along their length. As
indicated in this figure, the deflectors may be moved between a
rest position, wherein they are out of the conveying path of the
material on the endless conveyor bands, and an operating position
at the car being loaded, i.e., center car 7, wherein successive
deflectors are moved into the path of the material being conveyed
on conveyor portions 22, 23 to deflect successive portions of the
material into bin 17. The deflector operation may be so controlled
that a first deflector is inserted into the conveying path to fill
a first portion of the bin and is then moved out of the path after
this portion has been filled to permit the material to move on to
the next inserted deflector, and so on. The operation and function
of such deflector means will be more fully described in connection
with FIG. 9.
Another embodiment of the present invention is illustrated in FIG.
8, this structure being very simple while the pivotal positioning
of the ends of the conveyor portions make possible a particularly
varied and sensitive adjustment in the conveying of the material
over the entire train of cars. In this embodiment, the freight car
may be a dump-type hopper car 44 whose hopper or storage bin 45 has
an open top delimited by end edges or rims 46. The car carries a
guide rail 47 bridging the open top and extending in the direction
of track elongation substantially parallel to the plane of the
track. Conveyor means 13b is constituted by two conveyor portions
48, 49, respective carriages 52, 53 being movable on the guide rail
and each conveyor portion being pivotally mounted on a respective
carriage intermediate the ends of the conveyor portion so that the
conveyor portions may be pivoted at their center point about a
horizontal axis extending transversely to the direction of track
elongation. Drives 54 and 55 are mounted on the carriages to power
the pivotal movement of the conveyor portions. Thus, the conveyor
portions may be so pivoted as that their conveying planes enclose
an acute angle with the plane of the track, i.e., a horizontal
plane. This enables the conveyor means to operate without
difficulty on tangent track as well as in superelevated curves.
The conveyor portions are displaceable along the guide rail by
rack-and-pinion drive comprising pinions 50, 51 on carriages 52,
53, which mesh with rack 56 along the guide rail. When conveyor
portions 48, 49 are in the position shown in full lines in FIG. 8,
the top opening of the hopper is bridged and the material is
transferred over this hopper in the conveying direction indicated
by the arrows in full lines. When the conveying direction is to be
reversed, the conveyor portions are displaced into the positions
shown in broken lines.
When it is desired to load hopper 45, rather than to transfer
material thereover, deflectors may be operated in the manner
described hereinabove in connection with FIG. 7 or the two conveyor
portions are displaced inwardly in the manner shown in FIGS. 5 and
6, for instance, and the conveying direction of their endless bands
are selectively reversed by operation of drives 57, 58 to fill
successive portions of storage bin 45. As explained in connection
with FIG. 2, power and control is supplied to drives 50, 51, 54, 55
and 57, 58 by means of power and control lines 37, 59, 38 connected
to main lines 39, 60, 40. The main lines are, as shown in FIG. 1,
connected to a common power source on the ballast cleaning machine
and to control 61 although they could also be locally controlled by
a control 62 on each car. The remote control of all drives for the
displacement and/or pivoting of the conveyor portions makes it
possible to assure a continuous operation along the entire train
for the transfer and loading of the material from, to and into
selected cars without interruption.
The conveyor means of the embodiment shown in FIG. 9 consists of
three conveyor portions with common endless conveyor band 63
bridging the open top of storage bin 64 mounted on car 65. The
endless conveyor band has stationary center portion 66 fixedly
mounted on car 65 and two end conveyor portions 68, 69 which are
independently pivotal about axes extending transversely and
parallel to the track by means of hydraulic jacks 67, 67. Two
drives 70 move the endless conveyor band in reversible conveying
directions.
Since the three-part conveyor means of this embodiment is not
displaceable in the direction of track elongation in respect of its
car, two deflectors 71 are operable for loading the bin. When the
conveyor means is to be used not to transfer material over the bin
but to load it into the bin, the deflectors are successively moved
from their rest position outside the conveying path of the material
into this path. The deflectors may be movable vertically, laterally
or pivotally between their rest and operating positions by
servomotors 73.
Again, as schematically shown, drives 67, 70 and 73 are controlled
through main lines 74, 75.
The conveyor means 13c has the advantage that it requires no guide
rails means which makes the structure more economical in
construction, operation and servicing.
The three-part conveyor means is substantially of the same length
as the length L of car 65 although it will be effectively shortened
when at least one of the end portions is pivoted upwardly, as shown
in broken lines. The conveying position is shown in full lines in
FIG. 9. Thus, no other means than the pivoting of the end portions
is required to transfer material from one to the next adjacent car,
and the end portions may be folded upwardly when the car is moved
from one working site to another.
FIGS. 10 to 13 show various operating positions of conveyor means
13c. In the position of FIG. 10, material is simply conveyed in the
direction of arrow 76 over the cars while this conveying direction
is reversed in the direction of arrow 77 in FIG. 11. In the
positions shown in FIGS. 12 and 13, on the other hand, the center
car 65 is loaded by moving the deflectors 71 into their operating
positions blocking the path of the material and thus forcing it by
gravity into the bin, as shown by downwardly pointing arrows.
During this loading operation, the deflectors associated with the
conveyor means in the adjacent cars are in their rest position so
as to permit free flow of the material to center car 65.
It will be clearly understood that the hereinabove described
invention is not limited to use with ballast cleaning machines but
may be used for the conveying and loading of any material to, into
and from a succession of cars in a work train. The conveyor means
may be mounted for lateral displacement transversely to the track
so as to assure proper conveying and transfer of the material under
all working conditions, including in track curves. It is also
possible to couple together different embodiments of freight cars,
such as shown in FIGS. 2, 8 and 9, to form a work train without in
any way interfering with the effective operation. Obviously, any
type of freight car may be used. The drive means may be powered and
controlled electrically, hydraulically or pneumatically.
While the present invention has been described in connection with
certain now preferred embodiments, it will be understood that many
variations and modifications may occur to those skilled in the art,
particularly after benefiting from this teaching, without departing
from the spirit and scope of the invention as defined in the
appended claims.
* * * * *