U.S. patent application number 14/111920 was filed with the patent office on 2014-02-06 for repair/cleaning scaffolding tower for wind turbines.
This patent application is currently assigned to MANTENIMIENTOS ELECTRICOS CAMPO DE AVIACION, S.L.. The applicant listed for this patent is Jose Antonio Avila Espigares, Francisco Olea Porcel. Invention is credited to Jose Antonio Avila Espigares, Francisco Olea Porcel.
Application Number | 20140034418 14/111920 |
Document ID | / |
Family ID | 47008856 |
Filed Date | 2014-02-06 |
United States Patent
Application |
20140034418 |
Kind Code |
A1 |
Olea Porcel; Francisco ; et
al. |
February 6, 2014 |
REPAIR/CLEANING SCAFFOLDING TOWER FOR WIND TURBINES
Abstract
The invention relates to a repair/cleaning scaffolding tower for
wind turbines, having an open and closed metal structure that is
semi-automatic, including a robotic arm that supports a variable
shape basket, with between three and an infinite number of sides
depending on requirements. The basket includes a safety device
allowing the same to be removed immediately from the path of the
blades. In addition to the robotic arm, the invention includes an
L-shaped structural piece that supports a gangway used for
maintaining the gondola. The repair/cleaning scaffolding tower
includes a ring clamp with a gangway for maintaining the mast tower
and several ring clamps without a gangway for stabilising the
scaffolding tower.
Inventors: |
Olea Porcel; Francisco;
(Maraceba, ES) ; Avila Espigares; Jose Antonio;
(Purchil, ES) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Olea Porcel; Francisco
Avila Espigares; Jose Antonio |
Maraceba
Purchil |
|
ES
ES |
|
|
Assignee: |
MANTENIMIENTOS ELECTRICOS CAMPO DE
AVIACION, S.L.
Macarena, Granada
ES
|
Family ID: |
47008856 |
Appl. No.: |
14/111920 |
Filed: |
April 14, 2011 |
PCT Filed: |
April 14, 2011 |
PCT NO: |
PCT/ES11/00134 |
371 Date: |
October 15, 2013 |
Current U.S.
Class: |
182/2.1 |
Current CPC
Class: |
E04G 2001/244 20130101;
F03D 80/50 20160501; F03D 80/55 20160501; B66F 11/04 20130101; E04G
1/36 20130101; E04G 5/00 20130101; E04G 1/20 20130101; Y02E 10/72
20130101 |
Class at
Publication: |
182/2.1 |
International
Class: |
E04G 5/00 20060101
E04G005/00; E04G 1/38 20060101 E04G001/38; E04G 1/36 20060101
E04G001/36 |
Claims
1. A repair/cleaning tower for wind turbines, comprising the base
of the scaffolding tower, a structural displacement stretch of the
robotic arm, the robotic arm, the basket, the vents, the vent
anchoring, rubberized wheels and an electromagnet. Closed metal
structure base with rounded corners and with convex wheels inside
its structure, one side being open in order to introduce the
various stretches of the scaffolding tower with a closed metal
structure with rounded corners and convex wheels inside the
stretch, this having an open side, the ends being cylindrical in
form to allow the wheels of the structural displacement stretch to
pass. Structural displacement stretch which is moved inside the
scaffolding tower and is formed by the closed metal structure
having an open side with rounded corners, a zip system, motors and
crowns. The open side enables the robotic arm to move. Robotic arm
which comprises a crown of the rotation system and an automatic
levelling cam system. Basket formed by a semi-automatic manual
security system for workers and the blades and various stretches
with a metal structure coupled to one another, by means of conical
bearings and crowns for rotation which are coupled in such a way
that they are parallel to the blade. The stretches have a gangway,
safety elements and the cleaning systems, scanning systems and
photography systems. Structural "L-shaped" piece assembled by means
of penetrating the robotic arm, which is inside the structural
displacement stretch and is secured by means of a pin. Gangway for
stepping on, fitted in the upper portion of the structural
"L-shaped" stretch, formed by a light variable form metal
structure, with railings, safety skirtings and the various cleaning
systems, scanning systems and photography systems. The gangway also
has a complementary gangway which facilitates access, from the
same, to the ring clamp with a gangway and vice versa. The gangway
of the robotic "L-shaped" arm has a number of joints and bracing,
thereby reaching the maximum stability and security of the same.
Ring clamp with a gangway formed by two symmetrical variable form
metal structures with a number of joints and bracing. The structure
has a number of rubberised wheels, in the upper and lower portions
of the same, with a pneumatic system controlled by a pressure
regulator, in order to achieve balance and stability in the
scaffolding tower, as the auto mounting Is moved on the mast tower.
The structure has a gangway for stepping on, railings, safety
skirtings and the various cleaning systems, scanning systems and
photography systems. Ring clamp without a gangway formed by two
symmetrical variable form metal structures, which are coupled
parallel to the perimeter of the mast tower of the turbine, which
are built into the upper portion of the base and which, in a number
of stretches of the scaffolding tower are necessary. The structure
has a number of rubberised wheels fitted in the upper and lower
portions of the same. The wheels have a pneumatic system controlled
by a pressure regulator, in order to achieve balance and stability
in the scaffolding tower as the auto mounting is displaced on the
mast tower.
Description
TECHNICAL FIELD
[0001] The present invention falls within field of the technical
method through which maintenance, repair and cleaning work, in
addition to all other necessary works to be carried out on the
blades of wind turbines, may be effectuated, via a basket that will
carry the specific elements and devices needed for each job, as
well as the technicians who will use them, if necessary.
[0002] This basket is joined to a robotic arm, which is located
inside a structural element, responsible for moving the robotic arm
through the scaffolding tower.
[0003] Furthermore, owing to the new accessories built into the
scaffolding tower, for example the ring clamp with a gangway and
without a gangway and the basket in the new robotic arm coupling,
it is possible to carry out all necessary works on the mast and
gondola of the turbine, respectively.
STATE OF THE ART
[0004] Owing to the need to maintain the blades of wind turbines in
optimal condition and given the high cost of repairing them in
general, we believe that the technique described following a
description of the current technique is necessary.
[0005] Currently, various methods through which maintenance, repair
and cleaning works are carried out on the blade of wind turbines
are known about.
[0006] Once the decision to repair, maintain or clean the blade has
been taken, the blade is lowered to the floor, using various high
load capacity cranes, which must reach from the base of the turbine
to the blade anchoring, in order to detach it from the turbine
rotor.
[0007] It is clear that this process is carried out after having
stopped said turbine in order to lower the blade to the ground.
[0008] Moreover, the work must be carried out at high dismounting
and mounting costs, as well as the high cost of renting the cranes
and likewise of preparing for reduced energy production in the
turbine. Once the blade has been repaired, replaced or cleaned on
the ground according to the fault found, the average time it is
used in this process (depending on the problem) varies between 5
and 14 days. Therefore, the loss of time and material required in
such works is high, when compared to the method carried out
according to our present invention.
[0009] We therefore also adapt these new accessories to maintain
the mast and gondola of the turbine in optimal conditions.
[0010] Using our present invention, the techniques used to carry
out the appropriate works to resolve the various faults found (not
counting reduction of possible associated risks caused by not
having taken preventative maintenance work measures) are
transferred, resulting in a notable cost reduction, given the
greater output per hour of the turbine, since it does not have to
be inactive for such a long time.
DESCRIPTION OF THE INVENTION
[0011] The present inventions corresponds to an innovative system
that serves to facilitate any kind of work being carried out on the
blades of wind turbines, without the same having to be lowered to
the ground in order to effectuate said works.
[0012] The new system, known as a repair/cleaning scaffolding tower
for wind turbines, is able to carry out these maintenance and
repair works on the blades, provided that the same is located near
to the tower of the wind turbine, as described below.
[0013] Moreover, adapting the new accessories to the
repair/cleaning scaffolding tower allows us to maintain and repair
the mast as well as the gondola of the turbine.
[0014] The base (24) (FIGS. 2, 3 and 4) of the scaffolding tower
(1) (FIG. 1) is located on a special lorry (20) (FIGS. 2 and 3),
this lorry (20) (FIGS. 2 and 3) having the following
characteristics:
[0015] It has a hydraulic levelling system (21) (FIGS. 2 and 3),
which consists of a number of extendable arms which come out of the
structure of the lorry (20) itself (FIGS. 2 and 3), which should be
supported on solid ground, in order to achieve complete stability
in the lorry (20) (FIGS. 2 and 3), carrying the first stretch (25)
(FIG. 3) of the scaffolding tower (1) (FIG. 1).
[0016] In order to carry out the works, this lorry (20) (FIGS. 2
and 3) is equipped with a 7500 litre water deposit (34) (FIGS. 2
and 3), a pressure lofter (35) (FIGS. 2 and 3) and a power
generator (36) (FIGS. 2 and 3) for powering the electric system
needed to carry out cleaning works on the blades (54) (FIGS. 9, 10
and 11). In addition, it has a television circuit and a scanner
system (37) (FIGS. 2 and 3) for visualising the blades (54) (FIG.
9), all of which is stored in a built-in computer circuit, in which
it will be recorded onto the hard disc, in order to subsequently
individualize it on its disc, which will be stored with a turbine
number, the location of the turbine (in UTM coordinates) and the
day on which the work was carried out.
[0017] The base (24) (FIGS. 2, 3 and 4) of the scaffolding tower
(1) (FIG. 1) is mounted via a shaft onto a fork (22) (FIGS. 2 and
3), which is fixed and joined to the chassis of the lorry (20)
(FIGS. 2 and 3).
[0018] This fork (22) (FIGS. 2 and 3), upon which the base (24)
(FIGS. 2, 3 and 4) of the scaffolding tower (1) (FIG. 1) rotates,
is lifted by means of a rotating pulley system (23) (FIGS. 2 and
3), which are motorised and leant back onto the chassis of the
lorry (20) (FIGS. 2 and 3) and onto the base (24) (FIGS. 2, 3 and
4) of the scaffolding tower (1) (FIG. 1) until they are aligned
vertically.
[0019] The base (24) (FIGS. 2, 3 and 4) of the scaffolding tower
(1) (FIG. 1) has a dampening system (38) (FIGS. 2 and 3) in order
to make the rotating pulley system (23) (FIGS. 2 and 3) brake, so
that it is blocked when it has reached its working position.
[0020] The base (24) (FIGS. 2, 3 and 4) of the scaffolding tower
(1) (FIG. 1) will reach its working position when it comes into
contact with the mast of the turbine (31) (FIGS. 1, 2, 3 and
5).
[0021] This contact is achieved by means of a number of rubberized
wheels (29) (FIGS. 1 and 5), which are located in the upper portion
of the first stretch (25) (FIG. 3) of the scaffolding tower (1)
(FIG. 1), these wheels being placed with a certain degree of
rotation in order to embrace the mast of the turbine (31) (FIG.
1).
[0022] The base (24) (FIGS. 1, 2, 3, 4 and 5) of the scaffolding
tower (1) (FIG. 1) is formed by a stretch of metal structure 10
meters high, the 2 final meters of the base (24) (FIGS. 2, 3 and 4)
of the scaffolding tower (1) (FIG. 1) being closed (39) (FIG. 4) on
all of its sides or wings. However, the 8 remaining meters are open
(40) (FIG. 4) at one of its wings (the various stretches (19) (FIG.
5) that form the scaffolding tower (1) (FIG. 1) being introduced
through this opening).
[0023] Externally in the last two closed meters of the base (24)
(FIGS. 2, 3 and 4) of the scaffolding tower (1) (FIG. 1), a fixed
platform (27) (FIGS. 2 and 3) will be fitted, which is accessed by
means of a safety ladder (28) (FIGS. 2, 3 and 4) installed in the
wing of the base (24) (FIGS. 2, 3 and 4) of the scaffolding tower
(1) (FIG. 1), this fixed platform (27) (FIGS. 2 and 3) serving to
facilitate the assembly and mounting of all the components of the
scaffolding tower (1) (FIG. 1).
[0024] The inner corners of the base (24) (FIGS. 2, 3 and 4) of the
scaffolding tower (1) (FIG. 1) are cylindrical (18) (FIG. 4) in
structure, so that the 12 convex guide wheels (17) (FIG. 4) coupled
to the corners of the base (24) (FIGS. 2, 3 and 4) of the
scaffolding tower (1) (FIG. 1) are able to rotate on them, these
wheels being fastened by means of a rectangular structure (41)
(FIG. 4), with three in each corner. These wheels will serve to
help the gear motors (26) (FIG. 4) to move the internal mounting
stretches (19) (FIG. 5).
[0025] The metal stretches (19) (FIG. 5) of the scaffolding tower
(1) are introduced through the base (24) (FIGS. 2, 3, and 4) of the
scaffolding tower (1) (FIG. 1) in order to be subsequently hoisted
by means of four gear motors (26) (FIG. 4), which are located in
the upper portion of the base (24) (FIGS. 2, 3 and 4) of the
scaffolding tower (1) (FIG. 1), housed precisely within the two
wings adjacent to the open area of the base (24) (FIGS. 2, 3 and 4)
of the scaffolding tower (1) (FIG. 1).
[0026] These stretches (19) (FIG. 5) of the scaffolding tower (1)
shall be hoisted by the motors (26) (FIG. 4) located in the head of
the base (24) (FIGS. 2, 3 and 4) of the scaffolding tower (1) (FIG.
1) by means of the zip system (16) (FIG. 5).
[0027] The stretches (19) (FIG. 5), which are introduced in the
base (24) (FIGS. 2, 3 and 4) of the scaffolding tower (1) (FIG. 1),
just like the base (24) (FIGS. 2, 3 and 4) of the scaffolding tower
(1) (FIG. 1), are formed by a metal quadrangular structure, which
measures 7.5 meters in height and is closed (42) (FIG. 5) at three
of its sides, being part of an open wing (43) (FIG. 5). At the ends
of these wings are cylindrical tubes (44) (FIG. 5), which
facilitate passage and help us to make the structure of the
scaffolding tower (1) (FIG. 1) rigid, at the working stage of the
displacement system (12) (FIG. 6) of the robotic arm (13) (FIGS. 7
and 8).
[0028] The inner (45) (FIG. 5) and outer (46) (FIG. 5) corners of
these stretches are cylindrical in structure. The external (46)
(FIG. 5) cylindrical corners serve to facilitate the rotation of
the 12 convex wheels (17) (FIG. 4) on them, which are coupled to
the corners of the base (24) (FIGS. 2, 3 and 4) of the scaffolding
tower (1) (FIG. 1), which are coupled to a rectangular
structure.
[0029] The stretches (19) (FIG. 5) introduced have a double zip
(16) (FIG. 5) inserted into the left and right wings, which is what
shall be used to elevate them.
[0030] In addition, these stretches (19) (FIG. 5), have an internal
zip (16) (FIG. 5) in their left and right wings, which serves to
facilitate the internal movement of the displacement structure (12)
(FIG. 6) of the robotic arm (13) (FIGS. 7 and 8).
[0031] The first stretch (25) (FIG. 3), which shall be hoisted by
the inside of the base (24) (FIGS. 2, 3 and 4) of the scaffolding
tower (1) (FIG. 1), is already located inside the same (FIGS. 2 and
3).
[0032] In the upper portion of this first stretch (25) (FIG. 3),
two rubberized wheels (29) (FIGS. 1 and 5) will be coupled
externally, fitted with a degree of rotation in order to embrace
the mast of the turbine (31) (FIG. 1) and an electromagnet (30)
(FIGS. 1 and 5) for coupling to the turbine tower (31) (FIG.
1).
[0033] In turn, the structural displacement stretch (12) (FIG. 6)
of the robotic arm (13) (FIGS. 7 and 8) is built into this first
stretch (25) (FIG. 3), with the same included.
[0034] The structural displacement stretch (12) (FIG. 6) of the
robotic arm (13) (FIGS. 7 and 8) is composed of a quadrangular
metal structure, which is 6 meters in height, the first 2 meters
and the final meter of the stretch of the structural displacement
element (12) (FIG. 6) being closed (48) (FIG. 6) on all sides.
However, the 3 remaining meters are open (49) (FIG. 6) at one of
their ends, the robotic arm (13) (FIGS. 7 and 8) which supports the
basket (11) (FIGS. 9, 10 and 11) therefore being able to move.
[0035] The corners of the structural displacement stretch (12)
(FIG. 6) of the robotic arm (13) (FIGS. 7 and 8) are cylindrical in
form (50) (FIG. 8) and serve to enable the 12 convex wheels (47)
(FIG. 5) to rotate on them, with the corners of all the stretches
(19) (FIG. 5) which form the scaffolding tower (1) (FIG. 1) being
coupled to them, therefore facilitating the displacement of the
stretch carrying the robotic arm (13) (FIGS. 7 and 8) inside the
scaffolding tower (1) (FIG. 1).
[0036] These 12 internal wheels (47) (FIG. 5) are shared between
the four internal corners of each stretch (47) (FIG. 5) of the
scaffolding tower (1) (FIG. 1) equally, i.e. there are three wheels
(47) (FIG. 5) per corner of each stretch (19) (FIG. 5) of the
scaffolding tower (1) (FIG. 1).
[0037] The structural displacement stretch (12) (FIG. 6) with the
robotic arm (13) (FIGS. 7 and 8), upon being inside the first
mounting stretch (25) (FIG. 3) of the base (24) (FIGS. 2, 3 and 4)
of the scaffolding tower (1) (FIG. 1) shall be raised to an equal
height with stretches (19) (FIG. 3) coupled by the lower portion of
the base (24) (FIGS. 2, 3 and 4) of the scaffolding tower (1) (FIG.
1) until they reach the desired height (FIG. 1).
[0038] Once the scaffolding tower (1) (FIG. 1) has reached the
desired working height (FIG. 1) the structural displacement stretch
(12) (FIG. 6) with the robotic arm (13) (FIGS. 7 and 8) will be
lowered down to the head of the base (24) (FIGS. 2, 3 and 4) of the
scaffolding tower (1) (FIG. 1).
[0039] The stretches (19) (FIG. 5) of the scaffolding tower (1)
(FIG. 1) will have the vents (32) (FIG. 1), rubberized wheels (29)
(FIGS. 1 and 5) and electromagnets (30) (FIGS. 1 and 5) needed to
provide stable and safe working conditions. These vents (32) (FIG.
1), just like the rubberised wheels (29) (FIGS. 1 and 5) and
electromagnets (30) (FIGS. 1 and 5) will be mounted in unison with
the hoisting of the scaffolding tower (1) (FIG. 1). The vents (32)
(FIG. 1) were previously fixed to a hydraulic turbine system with
operating voltage, which is fixed to the ground by means of
foundations, used to anchor the vents (33) (FIG. 1), before
lowering the robotic arm (13) (FIGS. 7 and 8).
[0040] The structural displacement stretch (12) (FIG. 6) is moved
by means of two gear motors (15) (FIGS. 6, 7 and 8), which are
coupled to the structure of this stretch. The gear motors (15)
(FIGS. 6, 7 and 8) with a number of built in crowns (52) (FIGS. 6,
7 and 8) will be responsible for moving the scaffolding tower (1)
(FIG. 1) using the zips (16) (FIG. 5) in the stretches (19) (FIG.
5).
[0041] The structural displacement system (12) (FIG. 6) of the
robotic arm (13) (FIGS. 7 and 8) has a built in structure with
rotating wheels (51) (FIG. 8) which will be embraced and moved by
the external cylindrical tubes (44) (FIG. 5) of the open portion
(43) (FIG. 5) of the scaffolding tower (1) (FIG. 1), thereby
achieving rigid working conditions in both the tower and the
robotic arm (13) (FIGS. 7 and 8).
[0042] Once located in the upper portion of the base (24) (FIGS. 2,
3 and 4) of the scaffolding tower (1) (FIG. 1), the robotic arm
(13) (FIGS. 7 and 8) is fitted in horizontal position in order for
the operational basket (11) (FIGS. 9, 10 and 11) to couple it.
[0043] The robotic arm (13) (FIGS. 7 and 8) may carry out vertical
displacement manoeuvres owing to its toothed crowns in the rotation
system (FIGS. 6, 7 and 8) inside the displacement structure (12)
(FIG. 6), which is joined to this arm (13), this crown of the
rotating system (53) (FIGS. 7, 8 and 9) carrying out its movements
via two gear motors (14) (FIGS. 6 and 8) with a brake which
transmit their energy by means of crowns.
[0044] This robotic arm (13) (FIGS. 7 and 8) and the crown of the
rotation system (53) (FIGS. 6, 7 and 8) for movement have a built
in automatic levelling cam system (2) (FIG. 7) to ensure the basket
(11) (FIG. 9) is always horizontal, this basket being joined to
this robotic arm (13) (FIGS. 7 and 8).
[0045] The basket (11) (FIG. 9) which is joined to the robotic arm
(13) (FIGS. 7 and 8) is a metal structure composed of various
stretches (3) (FIG. 9) coupled to one another by means of conical
bearings (4) (FIG. 9) and crowns for rotation (55) (FIG. 9). It may
also adopt any shape or form required to carry out the works (FIGS.
9, 10 and 11).
[0046] These variable form metal stretches (3) (FIGS. 9, 10 and 11)
have a gangway (5) (FIG. 9) to step on and a safety rail (6) (FIG.
9) and admit various supports for the installation of their various
applications, for example: [0047] Cleaning system (7) (FIG. 9)
[0048] Scanning system (8) (FIG. 9) [0049] Photography system (9)
(FIG. 9) [0050] General repairs.
[0051] The basket (11) (FIGS. 9, 10 and 11) also have a
semi-automatic manual system with security sensors (10) (FIG. 9) so
as not to damage the blades (54) (FIGS. 9, 10 and 11) of the
turbine. Likewise, the safety of the workers is considered a
priority, given that should any circumstance arise or there be any
reason for them having to move the basket (11) (FIG. 11) (from
where they work) from the blades' (54) (FIG. 11) path, they could
do so quickly and in the most effective way according to the
circumstances.
[0052] One of the new accessories built into the scaffolding tower
(60) (FIG. 12) is the ring clamp with a gangway (56) (FIGS. 12, 13
and 14), which is built into the first stretch (61) (FIGS. 12 and
13) of the scaffolding tower (60) (FIG. 12). It is formed by two
symmetrical variable form metal structures, which are coupled in
parallel to the perimeter of the mast tower (62) (FIG. 12) of the
turbine. The same also have a number of joints and bracing (57)
(FIGS. 12, 13 and 14), thereby achieving the maximum stability and
security thereof.
[0053] The structure of the ring clamp with a gangway (56) (FIGS.
12, 13 and 14) has a number of rubberised wheels (58) (FIGS. 12, 13
and 14), fitted in the upper and lower portion of the same. The
wheels have a pneumatic system controlled by a pressure regulator
(59), (FIGS. 12 and 13) used to achieve balance and stability in
the scaffolding tower (60) (FIG. 12) as it moves the auto-mounting
on the mast tower (62) (FIG. 12) in order to reach their various
working positions.
[0054] The structure of the ring clamp with a gangway (56) (FIGS.
12, 13 and 14) to be stepped on also has railings (63) (FIGS. 12
and 13), safety skirting's (64) (FIGS. 12 and 13) and the various
supports for the installation of the various systems: [0055]
Cleaning system (65) (FIG. 14), scanning system (66) (FIG. 14),
photography system (67) (FIG. 14) and general repair system.
[0056] Another new accessory for the scaffolding tower is the ring
clamps without a gangway (68) (FIG. 12), which are built into the
upper portion of the base (69) (FIG. 12) of the scaffolding tower
(60) (FIG. 12) and into a number of stretches (70) (FIG. 12) of the
same, are necessary. This accessory is formed by two symmetrical
variable form metal structures, which are coupled parallel to the
perimeter of the mast tower (62) (FIG. 12) of the turbine.
[0057] The ring clamp structure (68) (FIG. 12) has a number of
rubberised wheels (58) (FIG. 12) fitted in the upper and lower
portion of the same. The wheels have a pneumatic system (59) (FIG.
12) controlled by a pressure regulator, in order to achieve balance
and stability in the scaffolding tower (60) (FIG. 12) in the
movement of the auto mounting on the mast tower (62) (FIG. 12).
[0058] The robotic arm (71) (FIG. 15) inside the structural
displacement stretch (72) (FIG. 15) is assembled by means of
penetrating an "L-shaped" structural piece (73), fixed with a pin
(74) (FIG. 15). In order to carry out this task, the robotic arm
displacement system (72) (FIG. 15) will be lowered down to the head
of the base (69) (FIG. 12) of the scaffolding tower (60) (FIG. 12);
the robotic arm (71) (FIG. 15) will be fitted in horizontal
position and part of the robotic arm (75) (FIG. 15) is withdrawn
where the basket was connected for works on the blades. Meanwhile,
the crowns of the rotation system (76) (FIG. 15) of the robotic arm
(71) (FIG. 15) are blocked and the automatic levelling cam system
(77) (FIG. 15) is withdrawn, thereby resulting in the robotic arm
(71) (FIG. 15) with the structural "L-shaped" piece (73) (FIG. 15)
being successfully placed in parallel position and at an ideal
height for carrying out the necessary works in the gondola (80)
(FIG. 12) of the turbine.
[0059] In the upper portion of the structural "L-shaped" stretch
(73) (FIG. 15) a gangway (78) (FIG. 15) is fitted for stepping on,
formed by a light variable form metal structure, with railings (63)
(FIG. 13) and safety skirtings (64) (FIG. 13) and the various
supports for installing the various cleaning systems (65) (FIG.
14), scanning systems (66) (FIG. 14) and photography systems (67)
(FIG. 14) as well as general repair systems.
[0060] Moreover, the gangway (78) (FIGS. 13 and 14) has a
complementary gangway (79) (FIGS. 13 and 14) which enables workers
to walk from the same to the ring clamp with a gangway and vice
versa. The gangway of the "L-shaped" robotic arm (73) (FIG. 15) has
a number of joints and bracing (81) (FIGS. 13 and 14), thereby
achieving the maximum stability and safety thereof.
DESCRIPTION OF THE DRAWINGS
[0061] In order to complement the present description, with the aim
of facilitating a better understanding of the invention
characteristics, in accordance with a preferred practical
embodiment of the same, below is a set of drawings which form an
integral part and non-limiting example thereof:
[0062] FIG. 1: Repair/cleaning scaffolding tower for wind
turbines.
[0063] FIG. 2: Positioning of the base of the scaffolding tower at
the foot of the turbine, with all of its components.
[0064] FIG. 3: Positioning of the base of the scaffolding tower at
the foot of the turbine, with elevation of the first stretch with
all of its components.
[0065] FIG. 4: Floor and front wing of the base of the scaffolding
tower where the stretches composing the scaffolding tower are
introduced.
[0066] FIG. 5: Floor and front wing of the stretches of the
scaffolding tower.
[0067] FIG. 6: Structural displacement stretch seen from the front
with robotic arm.
[0068] FIG. 7: Structural displacement stretch in a right hand side
view with robotic arm.
[0069] FIG. 8: Structural displacement stretch in a plan view with
robotic arm.
[0070] FIG. 9: Plan view of the repair/cleaning scaffolding tower
for wind turbines, with the position of the stretches of the basket
when carrying out the various works on the blades.
[0071] FIG. 10: Plan view of the repair/cleaning scaffolding tower
for wind turbines, with the position of the stretches of the basket
when carrying out various works on the blades.
[0072] FIG. 11: Plan view of the repair/cleaning scaffolding tower
for wind turbines, with the various positions of the stretches that
compose the basket, up to its total aperture.
[0073] FIG. 12: Repair/cleaning scaffolding tower for wind turbines
with new accessories built in: the ring clamp with a gangway, the
robotic L-shaped arm with a gangway and the ring clamp without a
gangway.
[0074] FIG. 13: Elevation view of the position of the robotic arm
with a gangway when carrying out the various works on the gondola
and; elevation view of the position of the ring clamp with a
gangway when carrying out the various works on the mast tower of
the turbine.
[0075] FIG. 14: Plan view of the position of the robotic arm with a
gangway when carrying out the various works on the gondola and;
plan view of the position of the ring clamp with a gangway when
carrying out the various works on the mast tower of the
turbine.
[0076] FIG. 15: Structural displacement stretch seen in a right
hand side view, with L-shaped robotic arm.
* * * * *