CN220165736U - Replacement device for yaw brake of wind generating set - Google Patents

Abstract

The utility model provides a replacement device for a yaw brake of a wind generating set, which comprises a support frame, a placement component and a lifting component, wherein the support frame is arranged on the support frame; the placing component comprises a sliding plate, a plurality of placing arms and a plurality of extending arms, the sliding plate is connected to the supporting frame in a sliding manner, the placing arms are used for supporting the yaw brake, and the lifting component is used for driving the sliding plate to lift along the vertical direction; the arm setting is placed on the slip board, and extension arm one-to-one sliding connection is on placing the arm, and the extension arm slides along the length direction of placing the arm. The replacement device for the yaw brake of the wind generating set has the effects of reducing the labor intensity of operators and reducing the safety risk.

Description

Replacement device for yaw brake of wind generating set

Technical Field

The utility model relates to the technical field of lifting devices, in particular to a replacement device for a yaw brake of a wind generating set.

Background

In the daily operation and maintenance process of the wind generating set, the wind generating set needs to perform yaw operation on wind, set braking and the like due to random variability of wind direction. The friction plate of the yaw brake is severely worn, and meanwhile, part of the yaw brake can cause oil leakage after long-term use. When the wind generating set is operated and maintained, the brake is required to be disassembled to replace a friction plate or directly replace the brake.

Most of the existing yaw brakes belong to hydraulic machinery, are large in size and heavy in mass, are positioned at the connection part of the engine room and the tower, have small operation space, and have a large height between the yaw brakes and the yaw platform. At present, in the actual disassembly and assembly operation process, the disassembly and assembly are usually carried out in a mode of manually lifting by three or more operators.

The mode of manually lifting is adopted during disassembly and assembly, so that the labor intensity of operators is high, and a large safety risk exists.

Disclosure of Invention

The utility model provides a replacement device for a yaw brake of a wind generating set, which is used for solving the problems of high labor intensity and high safety risk of manually lifting the yaw brake when the yaw brake is dismounted in a narrow space.

The utility model provides a replacement device for a yaw brake of a wind generating set, which comprises a support frame, a placement component and a lifting component, wherein the support frame is arranged on the support frame;

the placing component comprises a sliding plate, a plurality of placing arms and a plurality of extending arms, the sliding plate is connected to the supporting frame in a sliding manner, the placing arms are used for supporting a yaw brake, and the lifting component is used for driving the sliding plate to lift in the vertical direction;

the arm that places sets up on the slip board, extension arm one-to-one sliding connection is in place on the arm, the extension arm is followed place the length direction slip of arm.

Through adopting above-mentioned technical scheme, when dismantling yaw brake, place the below of yaw brake with the support frame, adjust the position of extension arm, adjust lifting unit, will place the arm and remove the bottom of yaw brake rather than the butt, pull down yaw brake from wind generating set, readjustment lifting unit puts down yaw brake, thereby realized the dismantlement to yaw brake, need not the manual work and lift yaw brake, alleviateed operating personnel's intensity of labour, simultaneously, after using the support frame to support, reduced the possibility that yaw brake dropped, thereby reduced the security risk in the dismouting operation.

Optionally, be provided with first gag lever post on the extension arm, first gag lever post is located the extension arm is kept away from place the one end of arm, first gag lever post is in the extension arm is followed place the length direction of arm is slided, with yaw brake butt or break away from the butt.

Through adopting above-mentioned technical scheme, first gag lever post has restricted the possibility that yaw brake from placing the arm landing, has reduced the risk that yaw brake dropped, further improved the security in the dismouting process.

Optionally, a first chute is formed in the placement arm, the extension arm is slidably inserted into the first chute, and a limiting part for limiting the relative position of the extension arm and the placement arm is arranged on the placement arm.

Optionally, the limiting part is a bolt, the bolt is inserted on the placement arm, and the bolt is abutted to the extension arm through the first chute.

Optionally, place the subassembly and still include horizontal pole of placing, horizontal pole of placing sets up perpendicularly place on the arm, horizontal both ends of placing the pole all slide and are provided with the second gag lever post, the second gag lever post is followed horizontal length direction who places the pole slides, with yaw brake butt or break away from the butt.

Through adopting above-mentioned technical scheme, the second gag lever post has restricted yaw brake from the possibility of side landing, further improves operating personnel's security.

Optionally, a fixing bolt is disposed on the horizontal placement rod, and the fixing bolt is inserted into the horizontal placement rod and abuts against the second limiting rod.

Optionally, the lifting assembly includes pneumatic cylinder, connecting rod, sprocket and chain, the connecting rod is fixed on the piston rod of pneumatic cylinder, the sprocket rotates the cover and establishes on the connecting rod, the one end of chain is fixed on the sliding plate, the other end is walked around the sprocket is fixed on the support frame, the chain with the sprocket meshing.

Optionally, the support frame includes base and two montants, two the second spout has all been seted up to the relative one side of montant, sliding plate sliding connection is between two the second spout.

Optionally, a reinforcing rod is disposed between the two vertical rods, and the reinforcing rod is located at one side of the vertical rods away from the placement arm.

Optionally, a roller is disposed at the bottom of the base.

According to the replacement device for the yaw brake of the wind generating set, the supporting frame is placed below the yaw brake, the position of the extension arm is adjusted, the lifting assembly is adjusted, the placing arm is moved to the bottom of the yaw brake to be abutted against the bottom of the yaw brake, and the position of the yaw brake is limited through the first limiting rod and the second limiting rod; the yaw brake is detached from the wind generating set, and the yaw brake is lowered by the lifting assembly, so that the yaw brake is detached without manually lifting the yaw brake, the labor intensity of operators is reduced, meanwhile, the possibility that the yaw brake falls off after the support frame is used for supporting is reduced, and the safety risk in the dismounting operation is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic view of an overall structure of a replacement device for a yaw brake of a wind turbine generator system according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a placement assembly and a lifting assembly of a replacement device for yaw brakes of a wind turbine generator system according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a partial structure of a placement arm of a replacement device for yaw brake of a wind turbine generator set according to an embodiment of the present utility model;

fig. 4 is a schematic partial structure view of a transverse placement rod of a replacement device for a yaw brake of a wind turbine generator system according to an embodiment of the present utility model.

Reference numerals illustrate:

100. a support frame; 110. a base; 120. a vertical rod; 121. a second chute; 130. a reinforcing rod; 140. a roller;

200. placing the assembly; 210. a sliding plate; 220. placing an arm; 230. an extension arm; 231. a first stop lever; 232. a first chute; 233. a limiting piece; 240. placing the rod transversely; 241. a second limit rod; 242. a fixing bolt;

300. a lifting assembly; 310. a hydraulic cylinder; 320. a connecting rod; 330. a sprocket; 340. and (3) a chain.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the daily operation and maintenance process of the wind generating set, the wind generating set needs to perform yaw operation on wind, set braking and the like due to random variability of wind direction. The friction plate of the yaw brake is seriously worn, and meanwhile, oil leakage and the like of part of yaw brakes can occur after long-term use. Therefore, when the wind generating set is operated and maintained, the brake is required to be disassembled to replace a friction plate or directly replace the brake.

The existing yaw brake mostly belongs to hydraulic machinery, is large in size and heavy in weight, and is generally between 80 kg and 160kg, the yaw brake is located at the connecting position of a cabin and a tower, the operation space is narrow, and a height difference of 1800mm exists between the yaw brake and a yaw platform. At present, in the actual disassembly and assembly operation process, three or more operators are usually matched with each other to perform disassembly and assembly in a manual lifting manner.

However, by adopting a manual lifting mode, the labor intensity of operators is high, the operation efficiency is low, and the safety risk that objects slide down to injure the operators exists.

In order to solve the problems, the utility model provides a replacement device for a yaw brake of a wind generating set, which supports the yaw brake through a placement arm, lifts the yaw brake in a manual hydraulic lifting mode, and simultaneously limits the position of the yaw brake through a first limiting rod and a second limiting rod. Therefore, in the dismounting process, the yaw brake does not need to be lifted manually, the labor intensity of operators is reduced, and meanwhile, after the support frame is used for supporting, the possibility that the yaw brake falls is reduced, so that the safety risk in the dismounting operation is reduced.

The following describes the technical scheme of the present utility model and how the technical scheme of the present utility model solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present utility model will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of an overall structure of a replacement device for a yaw brake of a wind turbine generator system according to an embodiment of the present utility model; fig. 2 is a schematic structural view of a placement assembly and a lifting assembly of a replacement device for a yaw brake of a wind turbine generator system according to an embodiment of the present utility model.

Referring to fig. 1 and 2, a replacement apparatus for a yaw brake of a wind turbine generator includes a support frame 100, a placement assembly 200, and a lifting assembly 300.

The support 100 includes a base 110 and two vertical rods 120, the two vertical rods 120 are symmetrically fixed on two sides of the base 110, and the two vertical rods 120 are perpendicular to the plane of the base 110. The two vertical rods 120 may be welded to the base 110, or may be fixed to the base 110 by bolts, which is not limited herein.

The placing assembly 200 comprises a sliding plate 210, a plurality of placing arms 220 and a plurality of extending arms 230, wherein the sliding plate 210 is slidably connected to the supporting frame 100, the placing arms 220 are used for supporting a yaw brake, the lifting assembly 300 is connected with the sliding plate 210, and the lifting assembly 300 is used for driving the sliding plate 210 to lift along the vertical direction; the placement arms 220 are disposed on the sliding plate 210 in a manner of extending in a lateral direction, the extension arms 230 are slidably connected to the placement arms 220 in a one-to-one correspondence, and the extension arms 230 slide along a length direction of the placement arms 220. The opposite sides of the two vertical rods 120 are provided with second sliding grooves 121, and the sliding plate 210 is slidably connected between the two second sliding grooves 121.

In the above technical scheme, when the yaw brake needs to be disassembled, the support frame 100 is placed below the yaw brake, the position of the extension arm 230 is adjusted along the transverse expansion, the lifting assembly 300 is adjusted, the placement arm 220 is moved to the bottom of the yaw brake to be in butt joint with the yaw brake, the yaw brake is disassembled from the wind generating set, and the lifting assembly 300 is adjusted to put down the yaw brake, so that the yaw brake is disassembled, the manual lifting of the yaw brake is not needed, the labor intensity of operators is reduced, and meanwhile, after the support frame 100 is used for supporting, the possibility that the yaw brake falls is reduced, so that the safety risk in the disassembling and assembling operation is reduced. And the extension arm 230 is provided with an adjustable length corresponding to the placement arm 220, so that the length of the placement end can be changed according to actual needs, and the practicability of the device is improved.

In an alternative embodiment, referring to fig. 2, the placement arms 220 are provided in two, and the corresponding extension arms 230 are provided in two, and the two placement arms 220 are fixed on one side of the sliding plate 210, and the two placement plates may be welded to the sliding plate 210 or fixed on the sliding plate 210 by bolts, which is not limited in this way. The two placement arms 220 are parallel to each other and are perpendicular to the vertical bar 120. The extension arms 230 are slidably coupled to the corresponding placement arms 220 to extend the placement arms 220.

Referring to fig. 2, the extension arm 230 is connected with a first stop lever 231, the first stop lever 231 is located at one end of the extension arm 230 far away from the placement arm 220, and the first stop lever 231 is in contact with or out of contact with the yaw brake when the extension arm 230 slides along the length direction of the placement arm 220. The first stop lever 231 limits the possibility that the yaw brake slides off the placement arm 220, reduces the risk of the yaw brake falling off, and further improves the safety during disassembly and assembly.

In the above embodiment, the first limit lever 231 is welded and fixed to the end of the extension arm 230, and the first limit lever 231 partially extends above the extension arm 230.

Also, in an alternative embodiment, the end of the first limit lever 231 is rotatably connected to the end of the extension arm 230, and the rotation axis of the first limit lever 231 is along the length direction of the extension arm 230. When it is desired to limit the position of the yaw brake using the first limit lever 231, the first limit lever 231 is rotated above the extension arm 230; when the yaw brake is not required to be used, only the first limiting rod 231 is required to be rotated below the extension arm 230, and at this time, the first limiting rod 231 is integrally located below the extension arm 230, so that the yaw brake is not limited to be moved out or moved in from the side, and the yaw brake is advantageously moved onto the placement arm 220 or moved out of the placement arm 220.

FIG. 3 is a schematic view of a partial structure of a placement arm of a replacement device for yaw brake of a wind turbine generator set according to an embodiment of the present utility model; fig. 4 is a schematic partial structure view of a transverse placement rod of a replacement device for a yaw brake of a wind turbine generator system according to an embodiment of the present utility model.

Referring to fig. 1 and 3, a first sliding groove 232 is formed in the placement arm 220, the first sliding groove 232 is formed along the length direction of the placement arm 220, the first sliding groove 232 penetrates through one end of the placement arm 220 far away from the vertical rod 120, the extension arm 230 is slidably inserted into the first sliding groove 232, and a limiting piece 233 for limiting the relative position of the extension arm 230 and the placement arm 220 is arranged on the placement arm 220.

In an alternative embodiment, referring to fig. 3, the top of the first runner 232 extends through the upper surface of the placement arm 220, with the upper surface of the extension arm 230 flush with the upper surface of the placement arm 220. When the yaw brake is placed on the placement arm 220 and the extension arm 230, the yaw brake can be conveniently placed flat, so that the possibility that the yaw brake slides off the placement arm 220 after being inclined is reduced, and the safety during operation is improved.

In the above embodiment, the two sides of the extension arm 230 may be further provided with a limiting slot, on the side of the first chute 232, for the sliding of the limiting slot, and the limiting slot is slidably inserted into the limiting slot, so as to avoid the possibility that the extension arm 230 moves out from the top end of the first chute 232.

In other embodiments, the cross-section of the extension arm 230 may be configured as a wedge, and the cross-section of the first runner 232 may be configured as a wedge-shaped slot that mates with the extension arm 230. Alternatively, the cross section of the extension arm 230 may be configured as a T-shape, and the cross section of the first runner 232 may be correspondingly configured as a T-shaped slot adapted to the extension arm 230.

Referring to fig. 3, the limiting member 233 is a bolt, and the bolt is inserted into the placement arm 220 and abuts against the extension arm 230 through the first chute 232. The bolt thread is inserted into the bottom of the placement arm 220 and is inserted into the first sliding slot 232 to abut against the bottom wall of the extension arm 230, thereby fixing the extension arm 230.

In another embodiment, the limiting member 233 may be a latch, and a plurality of latch holes are formed on the extension arm 230, and the latch is inserted into the latch hole through the placement arm 220, so as to fix the extension arm 230.

In an alternative embodiment, referring to fig. 4, the placement assembly 200 further includes a transverse placement rod 240, the transverse placement rod 240 is vertically connected to the placement arm 220, two ends of the transverse placement rod 240 are slidably provided with a second limiting rod 241, the second limiting rod 241 slides along the length direction of the transverse placement rod 240, and the second limiting rod 241 abuts against or breaks away from the yaw brake when sliding along the length direction of the transverse placement rod 240.

The second limiting rod 241 slidingly connected to the transverse placing rod 240 limits the yaw brake from sliding away from the placing arm 220 on both sides, thereby further reducing the possibility of dropping the yaw brake and improving the safety of disassembly.

Wherein, the two transverse placing rods 240 are arranged, the two transverse placing rods 240 are fixed on the placing arm 220 in parallel, the transverse placing rods 240 can be welded and fixed on the placing arm 220 and flush with the upper surface of the placing arm 220, and can also be integrally formed with the placing arm 220.

In the above embodiment, the second stopper 241 is an L-shaped rod, and the second stopper 241 is slidably inserted into the end of the lateral placement rod 240 and can be removed from the lateral placement rod 240. The two sides of the L-shaped rod in the second limiting rod 241 may be welded or integrally formed, or one side may be rotatably connected to the other side, and the rotation axis is along the length direction of one side. When the second limiting rod 241 is not needed, the second limiting rod 241 is removed from the transverse placing rod 240, or one side of the second limiting rod 241 is rotated, and one side of the second limiting rod 241, which is positioned outside the transverse placing rod 240, is rotated to the bottom of the placing arm 220, so that the second limiting rod 241 is prevented from obstructing the placing of the yaw brake.

Referring to fig. 4, a fixing bolt 242 is provided on the lateral placement rod 240, and the bolt is inserted into the lateral placement rod 240 and abuts against the second limiting rod 241. The fixing bolt 242 is threaded into the transverse placing rod 240 and abuts against the bottom of the second limiting rod 241.

Referring to fig. 1 and 2, the lifting assembly 300 includes a hydraulic cylinder 310, a connection rod 320, a sprocket 330 and a chain 340, the connection rod 320 is fixed at the top of a piston rod of the hydraulic cylinder 310 in a vertical arrangement, the sprocket 330 is rotatably sleeved on the connection rod 320, one end of the chain 340 is fixed on the sliding plate 210, the other end bypasses the sprocket 330 and is fixed on the supporting frame 100, and the chain 340 is engaged with the sprocket 330.

The hydraulic cylinder 310 is a manual hydraulic cylinder 310, and the manual hydraulic cylinder 310 is selected to reduce the occupied space, so as to facilitate lifting and lowering of the placement arm 220. The connecting rod 320 is fixedly connected to the top of the piston rod of the hydraulic cylinder 310 in a welding or bolt fixing mode, and is lifted along with the movement of the piston rod. The connecting rod 320 may be a round rod or a square rod. The sprocket 330 is rotatably coupled to the connection rod 320, and one end of the chain 340 is welded to the sliding plate 210 and the other end is welded to the base 110. When the piston rod of the hydraulic cylinder 310 is adjusted, the connecting rod 320 is driven to rise or fall, and thus the chain 340 is driven to pull the sliding plate 210 to rise or fall. The lifting of the yaw brake is realized.

In an alternative embodiment, both ends of the sliding plate 210 are welded with sliding blocks, and the sliding blocks are slidably connected in the second sliding grooves 121, so that the second sliding grooves 121 provide guiding function for sliding the sliding plate 210, and shaking of the sliding plate 210 is avoided.

The two ends of the connecting rod 320 are both rotatably connected with the sprocket 330, two chains 340 are welded and fixed on the sliding plate 210, and the two chains 340 bypass the sprocket 330 and are welded and fixed with the base 110 in a one-to-one correspondence manner. The provision of two sprockets 330 is advantageous in improving the lifting ability of the slide plate 210, while improving the smoothness of the slide plate 210.

In another embodiment, both ends of the sliding plate 210 may be rotatably connected with rollers, and the rollers are rotatably connected in the second sliding groove and connected with the second sliding groove 121 by way of the rollers, so that frictional resistance of the sliding plate 210 when the sliding plate is lifted or lowered is reduced, so that the sliding plate 210 is slid conveniently, and lifting of the yaw brake is facilitated.

Referring to fig. 1, a reinforcing bar 130 is disposed between the two vertical bars 120, and the reinforcing bar 130 is located at a side of the vertical bar 120 away from the placement arm 220. The reinforcing rod 130 may be welded to the vertical rod 120 or may be fixedly connected to the vertical rod 120 by a bolt. The reinforcing bar 130 is a U-shaped bar so as to reserve a movable range of the hydraulic cylinder 310 and the sprocket 330.

In an alternative embodiment, the bottom of the base 110 is provided with rollers 140, and the rollers 140 are rotatably connected to four corners of the base 110, so that movement of the yaw brake is facilitated, and labor intensity of operators is further reduced. And the roller 140 may optionally use a universal wheel, and after the base 110 is moved to a proper position, the base 110 may be fixed by using a locking structure of the universal wheel, so as to facilitate the operation of a subsequent operator.

According to the replacement device for the yaw brake of the wind generating set, the support frame 100 is placed below the yaw brake, the position of the extension arm 230 is adjusted, the lifting assembly 300 is adjusted, the placement arm 220 is moved to the bottom of the yaw brake to be abutted against the bottom of the yaw brake, and the position of the yaw brake is limited through the first limiting rod 231 and the second limiting rod 241; the yaw brake is detached from the wind generating set, and the yaw brake is lowered by the lifting assembly 300, so that the yaw brake is detached without manually lifting the yaw brake, the labor intensity of operators is reduced, and meanwhile, the possibility that the yaw brake falls off after the support frame 100 is used for supporting is reduced, and the safety risk in the disassembling and assembling operation is reduced.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (10)

1. The replacing device for the yaw brake of the wind generating set is characterized by comprising a supporting frame, a placing component and a lifting component;

the placing component comprises a sliding plate, a plurality of placing arms and a plurality of extending arms, the sliding plate is connected to the supporting frame in a sliding manner, the placing arms are used for supporting a yaw brake, and the lifting component is used for driving the sliding plate to lift in the vertical direction;

the arm that places sets up on the slip board, extension arm one-to-one sliding connection is in place on the arm, the extension arm is followed place the length direction slip of arm.

2. The replacement device for a yaw brake of a wind turbine generator system according to claim 1, wherein a first stop lever is provided on the extension arm, the first stop lever being located at an end of the extension arm remote from the placement arm, the first stop lever being in abutment with or out of abutment with the yaw brake when the extension arm slides along a length direction of the placement arm.

3. The replacement device for the yaw brake of the wind generating set according to claim 1, wherein the placement arm is provided with a first chute, the extension arm is slidably inserted into the first chute, and the placement arm is provided with a limiting piece for limiting the relative position of the extension arm and the placement arm.

4. A replacement device for a yaw brake of a wind turbine according to claim 3, wherein the limiting member is a bolt, the bolt being inserted on the placement arm and abutting the extension arm via the first chute.

5. The replacement device for yaw brakes of a wind turbine generator system according to claim 1, wherein the placement assembly further comprises a transverse placement rod vertically disposed on the placement arm, two ends of the transverse placement rod are each slidably provided with a second stop rod, the second stop rods slide along a length direction of the transverse placement rod, and the second stop rods abut against or are out of abutment with the yaw brakes when sliding along the length direction of the transverse placement rod.

6. The replacement device for a yaw brake of a wind turbine generator system according to claim 5, wherein a fixing bolt is arranged on the transverse placement rod, and the fixing bolt is inserted into the transverse placement rod and abuts against the second limiting rod.

7. The replacement device for yaw brakes of a wind turbine generator system according to any one of claims 1 to 6, wherein the lifting assembly comprises a hydraulic cylinder, a connecting rod, a sprocket and a chain, the connecting rod is fixed on a piston rod of the hydraulic cylinder, the sprocket is rotatably sleeved on the connecting rod, one end of the chain is fixed on the sliding plate, the other end bypasses the sprocket and is fixed on the supporting frame, and the chain is meshed with the sprocket.

8. The replacement device for a yaw brake of a wind turbine generator system according to any one of claims 1 to 6, wherein the support frame comprises a base and two vertical rods, second sliding grooves are formed in opposite sides of the two vertical rods, and the sliding plate is slidably connected between the two second sliding grooves.

9. The replacement device for a yaw brake of a wind turbine generator system according to claim 8, wherein a reinforcement bar is arranged between two of the vertical bars, the reinforcement bar being located on a side of the vertical bars remote from the placement arm.

10. The replacement device for a yaw brake of a wind turbine generator set according to claim 8, wherein the bottom of the bedplate is provided with rollers.