CN220849910U - Cable maintenance equipment in wind turbine tower - Google Patents

Abstract

The utility model discloses a cable maintenance device in a wind turbine tower, which is used for being arranged in the tower and comprises: the integrated platform comprises a hanging beam and a cable protection frame, wherein the hanging beam and the cable protection frame are horizontally arranged on the inner wall of the tower, the hanging beam is integrated on the cable protection frame, one end of the cable protection frame is close to the crawling ladder, and the cable protection frame is used for penetrating a cable to limit the shaking space of the cable; the lifting device is used for carrying operators, is arranged on the crawling ladder, is internally provided with a driving device, and is connected with the hanging beam through a steel wire rope and used for driving the lifting device to move up and down along the crawling ladder; the cable twisting maintenance platform is horizontally arranged on the inner wall of the tower, is arranged close to the lower part of the integrated platform, and is provided with a certain space for stopping the lifter. The utility model can lead the lifter to directly reach the cable twisting maintenance platform, thereby reducing climbing of operators, improving the operation efficiency and the operation safety and saving the maintenance cost.

Description

Cable maintenance equipment in wind turbine tower

Technical Field

The utility model relates to the technical field of maintenance of wind turbines, in particular to cable maintenance equipment in a wind turbine tower.

Background

Wind turbine generator system is used for converting wind energy into the system of electric energy, and when the fan was operated, the cable in the fan tower can rotate along with the rotation of fan host computer, can lead to the winding between the cable and appear twisting the cable, or the pylon rocks, can lead to the swing of cable, and both conditions damage the cable easily, consequently, need the periodic maintenance of the cable in the tower of operating personnel to guarantee wind turbine generator system normal operating.

At present, the cat ladder is installed on the tower wall of pylon for the operating personnel scrambles, and is equipped with in the pylon and turns round cable maintenance platform for bear the operating personnel and carry out the cable maintenance operation, in order that operating personnel can be quick, safe, efficient pass from top to bottom in the pylon, install lifting device in the pylon, mainly comprise lift and hanging beam, and still set up lift in the pylon and berth the platform, the hanging beam locates the top that the lift berth the platform, the lift passes through wire rope and hanging beam to accessible wire rope reciprocates. However, in the above structure, due to the existence of the hanging beam and the limitation of space in the tower, the elevator cannot be directly lifted to the cable twisting maintenance platform, after an operator takes the elevator to reach the elevator stopping platform, the operator needs to climb to the cable twisting maintenance platform through the crawling ladder, the climbing distance between the elevator stopping platform and the cable twisting maintenance platform is increased, the operation risk is increased, meanwhile, the operation efficiency is reduced, the elevator stopping platform is only used for stopping the elevator, the maintenance operation requirement does not exist on the elevator, the overall weight of the tower is increased, and the maintenance cost is increased.

In summary, how to solve the problems of low safety, low efficiency and high maintenance cost caused by the fact that the elevator cannot directly reach the cable twisting maintenance platform is a problem to be solved by those skilled in the art.

Disclosure of utility model

Therefore, the utility model aims to provide the cable maintenance equipment in the wind turbine tower, which can enable the lifter to directly reach the cable twisting maintenance platform so as to reduce climbing of operators, improve the operation efficiency and the operation safety and save the maintenance cost.

In order to achieve the above object, the present utility model provides the following technical solutions:

An in-tower cable maintenance device for a wind turbine, for placement within a tower, comprising:

a ladder stand vertically arranged on the inner wall of the tower,

The integrated platform comprises a hanging beam and a cable protection frame, wherein the hanging beam and the cable protection frame are horizontally arranged on the inner wall of the tower, the hanging beam is integrated on the cable protection frame, one end of the cable protection frame is close to the ladder stand, and the cable protection frame is used for penetrating a cable to limit the shaking space of the cable;

The lifting device is used for carrying operators, the lifting device is arranged on the crawling ladder, a driving device is arranged in the lifting device, and the driving device is connected with the hanging beam through a steel wire rope and is used for driving the lifting device to move up and down along the crawling ladder;

The cable twisting maintenance platform is horizontally arranged on the inner wall of the tower, is arranged close to the lower part of the integrated platform, and a certain space is reserved between the cable twisting maintenance platform and the integrated platform and is used for stopping the lifter.

Preferably, the cable protection frame comprises a bottom plate, a guardrail and a limiting frame for penetrating and limiting the cable to shake, the guardrail is arranged on the bottom plate and along the periphery of the bottom plate, the limiting frame penetrates through the bottom plate, and the hanging beam is fixedly connected with the bottom plate.

Preferably, the guardrail is a fence structure, and the guardrail is detachably connected to the bottom plate.

Preferably, the bottom plate includes framework and backup pad that is H shape, the backup pad level is located on the framework, the framework includes a pair of parallel arrangement's girder and a plurality of supporting beam that is parallel to each other, and a plurality of supporting beam interval locates a pair of between the girder, be used for supporting the backup pad.

Preferably, the supporting plate is a checkered plate, and surrounding plates are arranged around the supporting plate.

Preferably, the supporting plate comprises a front plate and a rear plate which are parallel to each other, an installation gap is reserved between the front plate and the rear plate, and the hanging beam is arranged on the frame body through the installation gap.

Preferably, the guardrail is close to the one end of cat ladder is equipped with the opening, the front bezel is close to the opening sets up for bear the operation personnel activity operation, the back bezel is kept away from the opening sets up, just the back bezel is equipped with the installing port, spacing frame passes through the installing port is located on the framework.

Preferably, the hanging beam comprises a pair of cross beams, the cross beams are symmetrically arranged, and the steel wire rope hanging plate is connected between the pair of cross beams and used for penetrating the steel wire ropes.

Preferably, brackets are arranged between the two ends of the main beam and the inner wall of the tower, between the two ends of the hanging beam and the inner wall of the tower, the brackets are of an integrated structure formed by a pair of mutually perpendicular connecting plates, one connecting plate is used for being detachably connected with the main beam or the hanging beam, and the other connecting plate is fixedly connected with the inner wall of the tower.

Preferably, the upper portion of cat ladder passes the cable protection frame upwards extends and sets up, the lower part of cat ladder passes turn round cable maintenance platform downwardly extending and sets up, just the cat ladder with turn round between the cable maintenance platform and leave and be used for the lift goes up and down the wearing mouth that goes up and down to pass.

Compared with the prior art, the integrated platform is formed by integrating the hanging beam and the cable protection frame, the hanging beam is connected with the driving device in the lifter through the steel wire rope, so that the lifter moves up and down in the tower along the ladder stand, the cable twisting maintenance platform is arranged below the integrated platform, a certain space is reserved between the integrated platform and the cable twisting maintenance platform, the lifter can directly move upwards to the space between the integrated platform and the cable twisting maintenance platform and is stopped on the cable twisting maintenance platform, and therefore an operator can directly arrive at the cable twisting maintenance platform by taking the lifter to enable the operator to stand on the cable twisting maintenance platform to maintain the cable, or after the operator arrives at the cable twisting maintenance platform, the operator can climb the ladder stand on the cable protection frame to maintain the cable. Therefore, the lifting beam and the cable protection frame are integrated, so that the lifting machine can directly reach the cable twisting maintenance platform, the climbing of operators is reduced, the working efficiency and the working safety are improved, the lifting machine stopping platform is eliminated, the whole structure is optimized, and the maintenance cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a cable maintenance device in a wind turbine tower provided by the utility model;

FIG. 2 is a schematic diagram of an integrated platform according to the present utility model;

FIG. 3 is a schematic view of a frame in a base plate according to the present utility model;

FIG. 4 is a schematic view of a support plate in a base plate according to the present utility model

FIG. 5 is a schematic view of a guardrail according to the present utility model;

FIG. 6 is a schematic view illustrating the installation of a hanging beam and a frame according to the present utility model;

fig. 7 is a schematic structural diagram of a limiting frame provided by the present utility model;

Fig. 8 is a schematic structural view of a bracket provided by the present utility model.

In fig. 1 to 8, reference numerals include:

1 is a tower, 2 is a cat ladder, 3 is an integrated platform, 4 is an elevator, 5 is a twisted cable maintenance platform, 6 is a steel wire rope, and 7 is a cable;

31 is a hanging beam, 32 is a cable protection frame, 33 is a bracket, and 51 is a through hole;

311 is a cross beam, 312 is a steel wire rope hanging plate;

321 is a bottom plate, 322 is a guardrail, 323 is a limiting frame;

321-1 is a frame body and 321-2 is a supporting plate;

321-11 is a main beam and 321-12 is a supporting beam;

321-21 is a front plate, 321-22 is a rear plate, 321-23 is a mounting gap, 321-24 is a mounting opening, and 321-25 is a coaming;

322-1 is a horizontal frame, 322-2 is a vertical rod, and 322-3 is a steel plate;

321-12a are angle steels, 321-12b are first channel steels and 321-12c are second channel steels.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides cable maintenance equipment in a wind turbine tower, which can enable a lifter to directly reach a cable twisting maintenance platform so as to reduce climbing of operators, improve operation efficiency and operation safety and save maintenance cost.

It should be noted that, in the present embodiment, the orientation or positional relationship indicated by "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Referring to fig. 1, the application provides a cable maintenance device in a wind turbine tower, which is arranged in a tower 1 and comprises a cat ladder 2, an integrated platform 3, an elevator 4 and a cable twisting maintenance platform 5.

The cat ladder 2 is vertically arranged on the inner wall of the tower 1.

The integrated platform 3 includes hanging beam 31 and cable protection frame 32, and both are horizontal locates on the inner wall of pylon 1, and hanging beam 31 integration is on cable protection frame 32, and the one end of cable protection frame 32 is close to cat ladder 2 setting, and cable protection frame 32 is used for wearing to establish cable 7 in order to restrict cable 7's rocking space.

The lift 4 is used for carrying operating personnel, and on the cat ladder 2 was located to the lift 4, is equipped with drive arrangement in the lift 4, and drive arrangement passes through wire rope 6 and is connected with hanging beam 31 for drive lift 4 and reciprocate along cat ladder 2.

The cable twisting maintenance platform 5 is horizontally arranged on the inner wall of the tower 1, the cable twisting maintenance platform 5 is arranged close to the lower side of the integrated platform 3, and a certain space is reserved between the cable twisting maintenance platform 5 and the integrated platform for stopping the lifter 4.

Specifically, pylon 1 is along vertical installation subaerial, on the inner wall of pylon 1 and set up cat ladder 2 along its axial, be used for the operation personnel to climb, cable protection frame 32 and hanging beam 31 integrated form integrated platform 3, and both level setting and with the inner wall fixed connection of pylon 1, cable protection frame 32's one end is close to cat ladder 2 setting, so that the operation personnel reaches on the cable protection frame 32 through cat ladder 2, cable protection frame 32 wears to be equipped with cable 7, in order to restrict cable 7 and rock the space, lift 4 movable set up on cat ladder 2, cat ladder 2 plays the guide effect, in order to guarantee lift 4 can follow cat ladder 2 and reciprocate in pylon 1, lift 4 mainly has the case of taking and be used for driving the driving device that takes the case to reciprocate, driving device installs on the case, and be connected with hanging beam 31 through wire rope 6, in order to drive lift 4 through wire rope 6 and reciprocate, the inner wall of pylon 1 still fixedly connected with maintenance platform 5, it is close to set up and down in the integrated cable 5, lift 5 is close to the integrated side of torsion cable 3, and lift 5 can stop the lift 5, can stop to lift platform 5, can stop to the lift platform 5, can stop up and lift platform 5, because of the lift platform is located between lift platform 5 and lift platform 5. Thus, the operator can directly reach the cable twisting maintenance platform 5 by taking the lifter 4, so that the operator stands on the cable twisting maintenance platform 5 to maintain the cable 7, or after reaching the cable twisting maintenance platform 5, the operator stands on the cable protecting frame 32 through the climbing ladder 2 to maintain the cable 7. Therefore, the lifting beam 31 and the cable protection frame 32 are integrally arranged, so that the lifting machine 4 can directly reach the cable twisting maintenance platform 5, the climbing of operators is reduced, the working efficiency and the working safety are improved, the stopping platform of the lifting machine 4 is eliminated, the whole structure is optimized, and the maintenance cost is saved.

Alternatively, the driving device of the present application may employ a hoist on which one end of the wire rope 6 is wound and the other end of which is provided on the hanging beam 31 through a pulley, so as to achieve lifting of the lifter 4 by rotation of the hoist. However, the type and arrangement of the driving device are not limited, and may be sufficient to provide power for lifting the lifter 4.

On the basis of the above embodiment, please refer to fig. 1 and 2, the cable protection frame 32 includes a bottom plate 321, a guard rail 322 and a limiting frame 323 for penetrating and limiting the shaking of the cable 7, the guard rail 322 is disposed on the bottom plate 321 and along the periphery thereof, the limiting frame 323 is penetrating and disposed on the bottom plate 321, and the hanging beam 31 is fixedly connected with the bottom plate 321.

Specifically, when the operation personnel maintains the cable 7, the cable 7 is maintained by standing on the cable protection frame 32, in order to ensure the operation safety, the cable protection frame 32 is composed of a bottom plate 321, a guardrail 322 and a limiting frame 323, two ends of the bottom plate 321 are fixedly connected with the inner wall of the tower 1, the guardrail 322 is arranged around the periphery of the bottom plate 321, the limiting frame 323 penetrates through the bottom plate 321, so that the cable 7 penetrates through the bottom plate 321 through the limiting frame 323 and is limited in the limiting frame 323, the cable 7 is prevented from being damaged due to large shaking amplitude, two ends of the hanging beam 31 are fixedly connected with the inner wall of the tower 1 and are in cross connection with the bottom plate 321, and the steel wire rope 6 is ensured to stably lift the lifter 4. Therefore, when the cable 7 is maintained by the worker standing on the bottom plate 321 through the ladder stand 2 by adopting the cable protection frame 32 with the structure, the guardrails 322 around the bottom plate 321 can prevent the worker from falling off the bottom plate 321, so that the work safety of the worker is further ensured.

On the basis of the above embodiment, please refer to fig. 1, 3 and 4, the bottom plate 321 includes an H-shaped frame 321-1 and a support plate 321-2, the support plate 321-2 is horizontally disposed on the frame 321-1, the frame 321-1 includes a pair of parallel main beams 321-11 and a plurality of parallel support beams 321-12, and the plurality of support beams 321-12 are disposed between the pair of main beams 321-11 at intervals for supporting the support plate 321-2.

Specifically, the bottom plate 321 is composed of a frame 321-1 and a supporting plate 321-2, the frame 321-1 is composed of a pair of main beams 321-11 and a plurality of supporting beams 321-12, the pair of main beams 321-11 are arranged in parallel, the plurality of supporting beams 321-12 are arranged at intervals and are connected between the pair of main beams 321-11 to form an H-shaped frame 321-1, the supporting plate 321-2 is horizontally fixed on the frame 321-1 and is positioned on the plurality of supporting beams 321-12 to strengthen the structural strength of the bottom plate 321, so that the bearing capacity of the bottom plate 321 is improved, and operators are ensured to safely stand on the bottom plate 321 to perform cable 7 maintenance operation.

On the basis of the above embodiment, referring to fig. 4, the support plate 321-2 includes a front plate 321-21 and a rear plate 321-22 parallel to each other, and a mounting gap 321-23 is reserved between the front plate 321-21 and the rear plate 321-22, and the hanging beam 31 is disposed on the frame 321-1 through the mounting gap 321-23. Thus, one end of the hanging beam 31 is fixedly connected with one side inner wall of the tower 1, the other end of the hanging beam passes through the mounting gap 321-23 to be fixedly connected with the other side inner wall of the tower 1, and the middle part of the hanging beam 31 is fixed on the main beam 321-11 and the supporting beam 321-12 in the frame 321-1, so as to ensure that the hanging beam 31 is firmly mounted on the cable protection frame 32.

On the basis of the above embodiment, referring to fig. 1 and 5, an opening is provided at one end of the guardrail 322 near the ladder 2, a front plate 321-21 is provided near the opening for carrying the activity of the operator, a rear plate 321-22 is provided far from the opening, and the rear plate 321-22 is provided with a mounting opening 321-24, and a limiting frame 323 is provided on the frame 321-1 through the mounting opening 321-24.

Specifically, the ladder stand 2 is disposed at the opening of the guard rail 322, the front plate 321-21 of the support plate 321-2 is disposed near the opening, the rear plate 321-22 of the support plate 321-2 is disposed at the rear of the front plate 321-21, and the rear plate 321-22 is provided with a mounting opening 321-24 adapted to the limiting frame 323, so that the limiting frame 323 is fixed on the frame 321-1 through the mounting opening 321-24, and the stability of the structure of the limiting frame 323 is ensured. Thus, with the above structure, the operator can enter the cable protection frame 32 through the opening of the guardrail 322 and can stand on the front plate 321-21 movably to perform maintenance operation on the cable 7 penetrating through the rear plate 321-22, thereby facilitating the operator to enter the cable protection frame 32 and improving the convenience of the maintenance operation of the cable 7.

Optionally, referring to fig. 2, 3 and 7, the main beam 321-11 in the frame 321-1 is made of H-shaped steel, the plurality of supporting beams 321-12 are made up of a plurality of angle steels 321-12a and a plurality of first channel steels 321-12b, and the plurality of angle steels 321-12a are arranged at the bottom end of the front plate 321-21 to better support the front plate 321-21, so as to improve the bearing capacity of the front plate 321-21, and enable operators to stand on the front plate 321-21 more safely; the first channel steel 321-12b is arranged at the bottom end of the rear plate 321-22, for example, the first channel steel 321-12b is arranged in two, the two first channel steel 321-12b is connected between the pair of main beams 321-11, at least two second channel steel 321-12c which are spaced and arranged in parallel are also arranged between the two first channel steel 321-12b, and thus, the first channel steel 321-12b and the second channel steel 321-12c form a limit frame mounting seat for fixedly mounting the limit frame 323 so as to improve the stability of the structure of the limit frame 323.

On the basis of the above embodiment, please refer to fig. 4, the supporting plate 321-2 is a checkered plate, and surrounding plates 321-25 are disposed around the supporting plate 321-2.

Specifically, the front plate 321-21 and the rear plate 321-22 are patterned plates, which have an anti-slip effect to prevent operators from sliding down on the support plate 321-2, so as to facilitate the walking of the operators, and the side edges of the front plate 321-21 are provided with the coamings 321-25, and the side edges of the rear plate 321-22 and the end far away from the hanging beam 31 are provided with the coamings 321-25 to prevent the objects placed on the support plate 321-2 from falling.

On the basis of the above embodiment, referring to fig. 5, the guard rail 322 has a fence structure, and the guard rail 322 is detachably connected to the base plate 321.

Specifically, the guard rail 322 is composed of a plurality of horizontal frames 322-1 and a plurality of vertical rods 322-2, the horizontal frames 322-1 are rectangular structures with one ends open, the plurality of horizontal frames 322-1 are vertically spaced and arranged in parallel, the plurality of vertical rods 322-2 are arranged around the circumference of the plurality of horizontal frames 322-1, and the plurality of horizontal frames 322-1 are connected to form the guard rail 322 with a fence structure. Thus, the guardrail 322 with the structure has simple structure, higher strength and stability and reduced overall weight. In addition, the bottom end of each vertical rod 322-2 is provided with a steel plate 322-3, and the steel plates 322-3 are mounted on the frame 321-1 and the support plate 321-2 by bolts, so that the guardrails 322 can be rapidly disassembled and assembled.

Optionally, the horizontal frame 322-1 and the vertical rod 322-2 are made of circular steel pipes, and the guard rail 322 is formed by welding a plurality of circular steel pipes to each other, so as to further improve the structural strength and structural stability of the guard rail 322.

On the basis of the above embodiment, referring to fig. 6, the hanging beam 31 includes a pair of cross beams 311 symmetrically arranged, and a wire rope hanging plate 321 connected between the pair of cross beams 311 for threading the wire rope 6.

Specifically, the cross beam 311 adopts the channel-section steel, and the opening of a pair of channel-section steel outwards symmetry sets up, and wire rope hanger plate 321 passes through the fix with screw between the web of a pair of channel-section steel, and wire rope hanger plate 321 is located between a pair of girder 321-11, like this, the weight of lift 4 accessible wire rope 6, wire rope hanger plate 321 transmit for girder 321-11 to guarantee that the crane steadily reciprocates.

Further, referring to fig. 1 and 8, brackets 33 are respectively disposed between two ends of the main beam 321-11 and the inner wall of the tower 1, and between two ends of the hanging beam 31 and the inner wall of the tower 1, the brackets 33 are an integral structure formed by a pair of mutually perpendicular connection plates, one connection plate in the brackets 33 is used for being connected with the main beam 321-11 or the hanging beam 31 through bolts, and the other connection plate is welded on the inner wall of the tower 1, so as to improve the stability of the integral structure, and meanwhile, the connection is formed by adopting bolts, so that the convenience of assembling and disassembling the integral structure can be improved.

On the basis of the above embodiment, please refer to fig. 1, the upper portion of the ladder stand 2 is extended upward through the cable protection frame 32, the lower portion of the ladder stand 2 is extended downward through the torsion cable maintenance platform 5, and a through hole 51 for the lift 4 to go up and down is reserved between the ladder stand 2 and the torsion cable maintenance platform 5.

Specifically, the torsion cable maintenance platform 5 is provided with a through hole 51, the upper portion of the cat ladder 2 passes through the opening of the guardrail 322 to extend upwards, the lower portion passes through the through hole 51 to extend downwards, and the caliber of the through hole 51 is larger than the width of the lifter 4, so that the lifter 4 can pass through the through hole 51. Thus, before the operator performs maintenance operation, riding the lifter 4, the lifter 4 moves upwards along the cat ladder 2 to pass through the through hole 51 until the bottom end of the lifter 4 is leveled with the torsion cable maintenance platform 5, the lifter 4 stops moving, the riding bin of the lifter 4 directly rests on the plane of the torsion cable maintenance platform 5, and the operator can safely and quickly mount the torsion cable maintenance platform 5 after leaving the riding bin; after the maintenance work is completed by the worker, the worker reaches the ground safely and quickly by the lifter 4, contrary to the above-described process. Therefore, by adopting the structure, the gap between the sitting cabin and the torsion cable maintenance platform 5 can be reduced, and the operator can conveniently and safely log on or leave the torsion cable maintenance platform 5.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The cable maintenance equipment in the wind turbine tower provided by the utility model is described in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. Wind turbine generator system tower cable maintenance equipment for set up in pylon (1), characterized in that includes:

a cat ladder (2) vertically arranged on the inner wall of the tower (1),

The integrated platform (3) comprises a hanging beam (31) and a cable protection frame (32), wherein the hanging beam (31) and the cable protection frame (32) are horizontally arranged on the inner wall of the tower (1), the hanging beam (31) is integrated on the cable protection frame (32), one end of the cable protection frame (32) is close to the cat ladder (2), and the cable protection frame (32) is used for penetrating a cable (7) to limit the shaking space of the cable (7);

The lifting device comprises a lifting device (4) and a lifting beam (31), wherein the lifting device is used for carrying operators, the lifting device (4) is arranged on a crawling ladder (2), a driving device is arranged in the lifting device (4), and the driving device is connected with the lifting beam (31) through a steel wire rope (6) and is used for driving the lifting device (4) to move up and down along the crawling ladder (2);

The cable twisting maintenance platform (5) is horizontally arranged on the inner wall of the tower (1), the cable twisting maintenance platform (5) is arranged close to the lower part of the integrated platform (3), and a certain space is reserved between the cable twisting maintenance platform and the integrated platform and is used for stopping the lifter (4).

2. The wind turbine tower internal cable maintenance device according to claim 1, wherein the cable protection frame (32) comprises a bottom plate (321), a guardrail (322) and a limiting frame (323) for penetrating and limiting the shaking of the cable (7), the guardrail (322) is arranged on the bottom plate (321) and is surrounded along the periphery of the bottom plate (321), the limiting frame (323) is penetrated on the bottom plate (321), and the hanging beam (31) is fixedly connected with the bottom plate (321).

3. The wind turbine tower cable maintenance apparatus of claim 2, wherein the guard rail (322) is a fence structure, and the guard rail (322) is detachably connected to the bottom plate (321).

4. The wind turbine tower cable maintenance device according to claim 2, wherein the bottom plate (321) comprises an H-shaped frame body (321-1) and a supporting plate (321-2), the supporting plate (321-2) is horizontally arranged on the frame body (321-1), the frame body (321-1) comprises a pair of parallel main beams (321-11) and a plurality of mutually parallel supporting beams (321-12), and the supporting beams (321-12) are arranged between the pair of main beams (321-11) at intervals and used for supporting the supporting plate (321-2).

5. Wind turbine tower cable maintenance equipment according to claim 4, characterized in that the support plate (321-2) is a pattern plate and surrounding plates (321-25) are arranged around the support plate (321-2).

6. Wind turbine tower cable maintenance device according to claim 4, wherein the support plate (321-2) comprises a front plate (321-21) and a rear plate (321-22) which are parallel to each other, and are spaced apart to form a mounting gap (321-23), and the hanging beam (31) is arranged on the frame body (321-1) through the mounting gap (321-23).

7. The wind turbine tower cable maintenance device according to claim 6, wherein an opening is formed at one end of the guardrail (322) close to the crawling ladder (2), the front plate (321-21) is arranged close to the opening and used for carrying the movable operation of operators, the rear plate (321-22) is arranged away from the opening, the rear plate (321-22) is provided with a mounting opening (321-24), and the limiting frame (323) is arranged on the frame body (321-1) through the mounting opening (321-24).

8. The wind turbine tower cable maintenance device according to claim 4, wherein the hanging beam (31) comprises a pair of cross beams (311) symmetrically arranged, and a wire rope hanging plate (321) is connected between the pair of cross beams (311) for penetrating the wire rope (6).

9. Wind turbine tower cable maintenance device according to claim 4, wherein brackets (33) are arranged between both ends of the main beam (321-11) and the inner wall of the tower (1) and between both ends of the hanging beam (31) and the inner wall of the tower (1), the brackets (33) are an integral structure formed by a pair of mutually perpendicular connecting plates, one connecting plate is used for being detachably connected with the main beam (321-11) or the hanging beam (31), and the other connecting plate is fixedly connected with the inner wall of the tower (1).

10. Wind turbine tower cable maintenance device according to any one of claims 1 to 9, wherein the upper part of the ladder stand (2) passes through the cable protection frame (32) and extends upwards, the lower part of the ladder stand (2) passes through the torsion cable maintenance platform (5) and extends downwards, and a through hole (51) for the lifter (4) to go up and down is reserved between the ladder stand (2) and the torsion cable maintenance platform (5).