Portable large fan operation and maintenance damper brake block jacking device

Abstract

The invention belongs to the technical field of wind driven generators, and discloses a portable large fan operation and maintenance damper brake block jacking device which comprises a bottom frame, a shear fork type lifting assembly is installed on the bottom frame and connected with a top frame, a position adjusting assembly is installed on the top frame and connected with a supporting platform, and the supporting platform is connected with a lifting assembly. Vertical rods are fixedly connected to the four corners of the top of the bottom frame, fixing assemblies are installed on the vertical rods, horizontal adjusting assemblies are fixed to the four hanging corners of the inner side of the bottom frame, adjustment in the front, back, left and right directions of the horizontal plane of the supporting platform can be carried out, accessories of a brake shoe can be conveniently aligned to the installation position, and the installation efficiency is improved. By means of fine adjustment in the front, back, left and right directions, installation of the damper brake block is more convenient, and the size of the jacking device is reduced through a folding structure of the shear fork type lifting assembly so as to adapt to the environment with narrow internal space and small channel of the wind driven generator.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine generators, and in particular relates to a portable large-scale wind turbine operation and maintenance brake block lifting device. Background Art

[0002] A wind turbine is a device that converts wind energy into electrical energy. The brake blocks on it can quickly stop the wind turbine's rotor from rotating when an emergency occurs, such as strong winds, power grid failures, mechanical failures, etc. This is one of the key measures to ensure the safety of wind turbines. For example, when the wind speed exceeds the design limit wind speed of the wind turbine, the speed of the wind rotor may rise sharply, posing a huge threat to the mechanical structure of the wind turbine. At this time, the brake blocks can stop the wind rotor in a short time to avoid serious consequences such as blades flying off and cabin damage. During daily maintenance, overhaul or planned shutdown of the wind turbine, the brake blocks are used to stop the wind turbine smoothly, which can ensure that maintenance personnel can safely enter the wind turbine to perform work, such as replacing parts and checking electrical System, etc. "Flying car" is a dangerous condition of wind turbines, which means that the wind wheel rotates at high speed without control. The brake block can effectively prevent this from happening. When the control system of the wind turbine fails and cannot control the wind wheel speed normally, the brake block can serve as the last safety line to prevent the wind wheel from rotating out of control. The brake block usually stops the wind wheel by mechanical friction. It is in close contact with the rotating parts of the wind turbine (such as the high-speed shaft or the low-speed shaft). When the braking command is issued, the brake block is tightly pressed against the brake disc on the rotating shaft under the action of a hydraulic or pneumatic drive device. Due to the friction between the brake block and the brake disc, a braking torque opposite to the direction of rotation is generated, thereby gradually reducing the speed of the wind wheel until it stops.

[0003] When installing the brake block on a wind turbine, a lifting device is required to raise the brake block to the installation position. For the existing lifting devices, the internal space of the wind turbine is small and the passage is relatively small, so most of the lifting devices need to be assembled inside, which undoubtedly increases the difficulty of carrying tools. During the installation process, the position of the brake block also needs to be fine-tuned, and the brake block needs to be fixed on the lifting device, which is very inconvenient to fine-tune the position.

[0004] Therefore, in order to solve the above problems, a portable large-scale wind turbine operation and maintenance brake block lifting device is proposed. Summary of the invention

[0005] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a portable large-scale wind turbine operation and maintenance brake block jacking device, which has the advantages of reducing the difficulty of carrying the jacking device, and fine-tuning the front, back, left and right can make the brake block accessories convenient to align with the installation position, making the installation of the brake block more convenient.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a portable large-scale wind turbine operation and maintenance brake block lifting device, comprising a base frame, a scissor-type lifting assembly is installed on the base frame, the scissor-type lifting assembly is connected to a top frame, a position adjustment assembly is installed on the top frame, the position adjustment assembly is connected to a support platform, four corners of the top of the base frame are fixedly connected with vertical poles, a retaining assembly is installed on the vertical pole, and four hanging corners on the inner side of the base frame are fixed with horizontal adjustment assemblies;

[0007] The position adjustment assembly is installed on a longitudinal adjustment mechanism on the top frame, the longitudinal adjustment mechanism is connected to a longitudinal moving frame, a transverse adjustment mechanism is installed on the longitudinal moving frame, and the transverse adjustment mechanism is connected to a support platform;

[0008] The longitudinal adjustment mechanism includes two first fixed blocks arranged correspondingly, the two first fixed blocks are fixedly connected to the top frame and the longitudinal moving frame respectively, a first motor is installed on the first fixed block fixedly connected to the top frame, an output end of the first motor is connected to a first screw rod, the first screw rod passes through the first fixed block, the first screw rod between the two fixed blocks is threadedly connected to a first moving plate, a side of the first moving plate away from the first motor is fixedly connected to a plurality of evenly distributed first connecting rods, the first fixed block fixedly connected to the longitudinal moving frame is fixedly connected to the first connecting rod, a first positioning rod passes through the first moving plate, and the first fixed block fixedly connected to the top frame is fixedly connected to the first positioning rod;

[0009] The lateral adjustment mechanism includes two correspondingly arranged second fixed blocks, the two second fixed blocks are respectively fixedly connected to the longitudinal moving frame and the supporting platform, a second motor is installed on the second fixed block fixedly connected to the longitudinal moving frame, the output end of the second motor is connected to a second screw rod, the second screw rod passes through the second fixed block, the second screw rod between the two fixed blocks is threadedly connected to the second moving plate, a side of the second moving plate away from the second motor is fixedly connected to a plurality of evenly distributed second connecting rods, the second fixed block fixedly connected to the supporting platform is fixedly connected to the second connecting rod, a second positioning rod passes through the second moving plate, and the second fixed block fixedly connected to the longitudinal moving frame is fixedly connected to the second positioning rod.

[0010] Preferably, the scissor-type lifting assembly includes a plurality of cross-arranged scissor arms, the upper and lower connected scissor arms are connected by a rotating shaft, the cross-arranged scissor arms are connected by a middle rotating shaft, corresponding reinforcement rods are fixedly connected between the front and rear corresponding scissor arms, a hydraulic cylinder is connected between the two diagonally arranged reinforcement rods at the bottom, both ends of the hydraulic cylinder are connected to the reinforcement rods by a rotating shaft, the hydraulic cylinder is connected to a power unit through a high-pressure oil pipe, and the power unit is installed on the chassis.

[0011] Preferably, the rightmost scissor arm end at the bottom is rotatably connected to the base frame via a rotating shaft, the rightmost scissor arm end at the top is rotatably connected to the top frame via a rotating shaft, the leftmost scissor arm end at the bottom is slidably connected to the base frame, and the leftmost scissor arm end at the bottom is slidably connected to the top frame.

[0012] Preferably, a longitudinal positioning slide rail is provided on the top surface of the top frame, and the longitudinal positioning slide rail is slidably connected to the longitudinal movable frame. A transverse positioning slide rail is provided on the top surface of the longitudinal movable frame, and the transverse positioning slide rail is slidably connected to the support platform.

[0013] Preferably, the retaining assembly includes a first rotating shaft installed on the vertical pole, the first rotating shaft is rotatably connected to a positioning tube, the bottom end surface of the positioning tube is rotatably connected to a threaded ring through a bearing, the threaded ring is threadedly connected to a threaded rod, the top end of the threaded rod is arranged in the positioning tube, and the bottom end surface of the threaded rod is connected to a suction cup through a second rotating shaft.

[0014] Preferably, a limiting slide groove is provided on the outer wall of the threaded rod, a limiting slide bar is arranged in the limiting slide groove, the limiting slide bar is fixed on the inner wall of the positioning tube, a first magnet is fixedly connected to one side of the positioning tube close to the vertical pole, and a second magnet is fixed at a position on the vertical pole corresponding to the first magnet.

[0015] Preferably, the horizontal adjustment assembly includes a fixed plate fixedly connected to the base frame, a threaded tube is fixed at the middle position of the fixed plate, the threaded tube is threadedly connected to a threaded column, the bottom end surface of the threaded column is connected to a supporting foot through a bearing, and the top end surface of the threaded column is fixedly connected to a handle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can adjust the horizontal surface of the support platform in four directions, front, back, left, and right, by setting a position adjustment component, so that the accessories of the brake block can be easily aligned with the installation position. Since the accessories of the brake block are relatively heavy, the installation of the brake block is more convenient with the help of fine adjustment in four directions, front, back, left, and right;

[0018] 2. The present invention reduces the volume of the lifting device by setting a scissor-type lifting assembly and utilizing the folding structure of the scissor-type lifting assembly to adapt to the environment where the internal space of the wind turbine is narrow and the passage is relatively small, thereby reducing the difficulty of carrying the tool and facilitating carrying;

[0019] 3. The present invention sets a retaining assembly to adjust the extension length of the threaded rod so that it can be set at an angle, and the suction cup at the bottom can be adsorbed on the ground to form a stable triangular structure, thereby fixing the position of the jacking device and ensuring the stability of the device;

[0020] The present invention sets a level adjustment component and adjusts the height of the four hanging corners of the base frame from the ground to make the base frame in a horizontal state, so as to ensure that the device can be more stable even when the ground is uneven, which is conducive to ensuring the safety of the jacking device when it is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the decomposition structure of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the position of the scissor arm of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the longitudinal adjustment mechanism of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the lateral adjustment mechanism of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the chassis of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the level adjustment assembly of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the retaining assembly of the present invention.

[0029] In the figure: 1. bottom frame;

[0030] 2. Scissor lift assembly; 21. Scissor arm; 22. Reinforcement rod; 23. Hydraulic cylinder; 24. High-pressure oil pipe; 25. Power unit;

[0031] 3. Top frame; 31. Longitudinal positioning slide rail;

[0032] 4. Position adjustment component;

[0033] 41. longitudinal adjustment mechanism; 411. first fixed block; 412. first motor; 413. first screw rod; 414. first movable plate; 415. first connecting rod; 416. first positioning rod;

[0034] 42. Longitudinal moving frame; 421. Horizontal positioning slide rail;

[0035] 43, lateral adjustment mechanism; 431, second fixed block; 432, second motor; 433, second screw rod; 434, second movable plate; 435, second connecting rod; 436, second positioning rod;

[0036] 5. Support platform; 6. Vertical pole;

[0037] 7. Retention assembly; 71. First rotating shaft; 72. Positioning tube; 73. Threaded ring; 74. Threaded rod; 75. Second rotating shaft; 76. Suction cup; 77. Limiting slide groove; 78. Limiting slide bar; 79. First magnet; 710. Second magnet;

[0038] 8. Horizontal adjustment assembly; 81. Fixed plate; 82. Threaded pipe; 83. Threaded column; 84. Support foot; 85. Turn handle. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 8 As shown, the present invention provides a portable large-scale wind turbine operation and maintenance brake block lifting device, including a base frame 1, a scissor-type lifting assembly 2 is installed on the base frame 1, the scissor-type lifting assembly 2 is connected to a top frame 3, a position adjustment assembly 4 is installed on the top frame 3, the position adjustment assembly 4 is connected to a support platform 5, four corners of the top of the base frame 1 are fixedly connected to vertical poles 6, a retaining assembly 7 is installed on the vertical pole 6, and four hanging corners on the inner side of the base frame 1 are fixed with horizontal adjustment assemblies 8;

[0041] The position adjustment component 4 is installed on the longitudinal adjustment mechanism 41 on the top frame 3, and the longitudinal adjustment mechanism 41 is connected to the longitudinal moving frame 42, and the longitudinal moving frame 42 is installed with a transverse adjustment mechanism 43, and the transverse adjustment mechanism 43 is connected to the supporting platform 5. The position adjustment component 4 can adjust the supporting platform 5 in four directions of the horizontal front, rear, left and right, so that the accessories of the brake block can be easily aligned with the installation position. Since the accessories of the brake block are relatively heavy, the installation of the brake block is more convenient with the help of fine adjustment in the four directions of front, rear, left and right;

[0042] The longitudinal adjustment mechanism 41 includes two first fixed blocks 411 that are correspondingly arranged. The two first fixed blocks 411 are fixedly connected to the top frame 3 and the longitudinal movable frame 42 respectively. A first motor 412 is installed on the first fixed block 411 that is fixedly connected to the top frame 3. The output end of the first motor 412 is connected to a first screw rod 413, which passes through the first fixed block 411. The first screw rod 413 between the two fixed blocks is threadedly connected to a first movable plate 414. A side of the first movable plate 414 away from the first motor 412 is fixedly connected to a plurality of evenly distributed first connecting rods 415. The first fixed block 411 that is fixedly connected to the longitudinal movable frame 42 is fixedly connected to the first connecting rod 415. The first movable plate 414 passes through a first positioning rod 416. The first fixed block 411 that is fixedly connected to the top frame 3 is fixedly connected to the first positioning rod 416.

[0043] The lateral adjustment mechanism 43 includes two correspondingly arranged second fixed blocks 431, and the two second fixed blocks 431 are respectively fixedly connected to the longitudinal movable frame 42 and the supporting platform 5, and a second motor 432 is installed on the second fixed block 431 fixedly connected to the longitudinal movable frame 42, and the output end of the second motor 432 is connected to a second screw rod 433, and the second screw rod 433 passes through the second fixed block 431, and the second screw rod 433 between the two fixed blocks is threadedly connected to a second movable plate 434, and a side of the second movable plate 434 away from the second motor 432 is fixedly connected to a plurality of evenly distributed second connecting rods 435, the second fixed block 431 fixedly connected to the supporting platform 5 is fixedly connected to the second connecting rod 435, and the second movable plate 434 passes through a second positioning rod 436, and the second fixed block 431 fixedly connected to the longitudinal movable frame 42 is fixedly connected to the second positioning rod 436.

[0044] Specifically, the scissor-type lifting assembly 2 includes a plurality of cross-arranged scissor arms 21, the upper and lower connected scissor arms 21 are connected by a rotating shaft, the cross-arranged scissor arms 21 are connected by a central rotating shaft, the front and rear corresponding scissor arms 21 are fixedly connected with correspondingly arranged reinforcement rods 22, a hydraulic cylinder 23 is connected between the two diagonally arranged reinforcement rods 22 at the bottom, both ends of the hydraulic cylinder 23 are connected to the reinforcement rod 22 by a rotating shaft, the hydraulic cylinder 23 is connected to a power unit 25 by a high-pressure oil pipe 24, and the power unit 25 is installed on the base frame 1. The folding structure of the scissor-type lifting assembly 2 is used to reduce the volume of the jacking device to adapt to the narrow internal space and small passage environment of the wind turbine, reduce the difficulty of carrying the tool, and facilitate carrying.

[0045] Furthermore, the right end of the scissor arm 21 at the bottom is rotatably connected to the base frame 1 via a rotating shaft, the right end of the scissor arm 21 at the top is rotatably connected to the top frame 3 via a rotating shaft, the left end of the scissor arm 21 at the bottom is slidably connected to the base frame 1, and the left end of the scissor arm 21 at the bottom is slidably connected to the top frame 3.

[0046] Furthermore, a longitudinal positioning slide rail 31 is provided on the top surface of the top frame 3, and the longitudinal positioning slide rail 31 is slidably connected to the longitudinal movable frame 42 to ensure stable longitudinal movement of the longitudinal movable frame 42 on the top frame 3. A transverse positioning slide rail 421 is provided on the top surface of the longitudinal movable frame 42, and the transverse positioning slide rail 421 is slidably connected to the support platform 5 to ensure stable transverse movement of the support platform 5 on the longitudinal movable frame 42.

[0047] It is worth mentioning that the retaining assembly 7 includes a first rotating shaft 71 installed on the vertical pole 6, the first rotating shaft 71 is rotatably connected to the positioning tube 72, the bottom end surface of the positioning tube 72 is rotatably connected to the threaded ring 73 through a bearing, the threaded ring 73 is threadedly connected to the threaded rod 74, the top end of the threaded rod 74 is arranged in the positioning tube 72, and the bottom end surface of the threaded rod 74 is connected to the suction cup 76 through the second rotating shaft 75. The extended length of the threaded rod 74 is adjusted so that it can be tilted, and the suction cup 76 at the bottom can be adsorbed on the ground, so as to form a stable triangular structure, realize the fixation of the position of the jacking device, and ensure the stability of the device.

[0048] It is worth noting that a limiting groove 77 is provided on the outer wall of the threaded rod 74, and a limiting slide bar 78 is arranged in the limiting groove 77. The limiting slide bar 78 is fixed on the inner wall of the positioning tube 72. The limiting groove 77 and the limiting slide bar 78 cooperate to limit the rotation of the threaded rod 74 and ensure that the threaded rod 74 can move along the axial direction. A first magnet 79 is fixedly connected to the side of the positioning tube 72 close to the vertical rod 6, and a second magnet 710 is fixed at a position on the vertical rod 6 corresponding to the first magnet 79. After the threaded rod 74 is retracted to the positioning tube 72, the position of the positioning tube 72 can be fixed.

[0049] It is worth mentioning that the horizontal adjustment component 8 includes a fixed plate 81 fixedly connected to the base frame 1, a threaded tube 82 is fixed at the middle position of the fixed plate 81, the threaded tube 82 is threadedly connected to a threaded column 83, the bottom end surface of the threaded column 83 is connected to a supporting foot 84 through a bearing, and the top end surface of the threaded column 83 is fixedly connected to a handle 85. By adjusting the height of the four hanging corners of the base frame 1 from the ground, the base frame can be kept in a horizontal state to ensure that the device can be more stable when the ground is uneven, which is beneficial to ensuring the safety of the jacking device when in use.

[0050] Among them, the power unit 25, the first motor 412, and the second motor 432 are existing technologies and will not be described in detail; at the same time, the present invention also includes a power supply, a controller, and a switch, which are not the main technical points of this patent and will not be described in detail.

[0051] Working principle and process: carry the device to the inside of the wind turbine generator and place it on the ground where the brake block is installed. Check whether the position of the base frame 1 is horizontal. If it is not stable enough, rotate the handle 85 of the horizontal adjustment component 8 at the corresponding position, and then the threaded column 83 rotates. Under the action of the threaded tube 82, the threaded column 83 moves up or down, and the four corners of the base frame 1 can be adjusted to be on the same horizontal plane. Then rotate the threaded ring 73 of the fixing component 7. Under the action of the thread and the limiting slide groove 77 and the limiting slide bar 78, the threaded rod 74 will extend out of the positioning tube 72. Rotate the positioning tube 72 to tilt it, and make the suction cup 76 adsorb on the ground, so as to stabilize the position of the base frame 1 and ensure that the base frame 1 will not tilt. Fix the accessories of the brake block on the supporting platform 5, start the power unit 25 of the scissor-type lifting component 2, and introduce the hydraulic oil into the hydraulic cylinder 23 through the high-pressure oil pipe 24, so that the hydraulic cylinder 23 can be extended, thereby driving the corresponding reinforcement rod 22 to move, so that the scissor arm 21 is tilted. When the angle increases, the lifting effect can be achieved. The first motor 412 of the longitudinal adjustment mechanism 41 is started, and the first screw rod 413 rotates. Under the restriction of the first positioning rod 416 and the action of the thread, the first movable plate 414 drives the first fixed block 411 fixedly connected to the longitudinal movable frame 42 to move through the first connecting rod 415, that is, the longitudinal movable frame 42 is driven to move in the longitudinal direction, and then the lateral adjustment mechanism 43 and the supporting platform 5 are driven to move longitudinally. The second motor 432 of the lateral adjustment mechanism 43 is started, and the second screw rod 433 rotates. Under the action of the second positioning rod 436 and the thread, the second movable plate 434 drives the second fixed block 431 fixedly connected to the supporting platform 5 to move laterally through the second connecting rod 435, and then the supporting platform 5 moves laterally, which can realize the movement of the supporting platform 5 in the four directions of front, back, left and right, so that the accessories of the brake block can be easily aligned with the installation position. Since the accessories of the brake block are relatively heavy, the installation of the brake block is more convenient with the help of fine-tuning in the four directions of front, back, left and right.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable large-scale wind turbine operation and maintenance brake block lifting device, including a base frame, characterized in that: A scissor-type lifting assembly is installed on the bottom frame, the scissor-type lifting assembly is connected to a top frame, a position adjustment assembly is installed on the top frame, the position adjustment assembly is connected to a support platform, four corners of the top of the bottom frame are fixedly connected to vertical poles, a retaining assembly is installed on the vertical pole, and four hanging corners on the inner side of the bottom frame are fixed with horizontal adjustment assemblies; The position adjustment assembly is installed on a longitudinal adjustment mechanism on the top frame, the longitudinal adjustment mechanism is connected to a longitudinal moving frame, a transverse adjustment mechanism is installed on the longitudinal moving frame, and the transverse adjustment mechanism is connected to a support platform; The longitudinal adjustment mechanism includes two first fixed blocks arranged correspondingly, the two first fixed blocks are fixedly connected to the top frame and the longitudinal moving frame respectively, a first motor is installed on the first fixed block fixedly connected to the top frame, an output end of the first motor is connected to a first screw rod, the first screw rod passes through the first fixed block, the first screw rod between the two fixed blocks is threadedly connected to a first moving plate, a side of the first moving plate away from the first motor is fixedly connected to a plurality of evenly distributed first connecting rods, the first fixed block fixedly connected to the longitudinal moving frame is fixedly connected to the first connecting rod, a first positioning rod passes through the first moving plate, and the first fixed block fixedly connected to the top frame is fixedly connected to the first positioning rod; The lateral adjustment mechanism includes two correspondingly arranged second fixed blocks, the two second fixed blocks are respectively fixedly connected to the longitudinal moving frame and the supporting platform, a second motor is installed on the second fixed block fixedly connected to the longitudinal moving frame, the output end of the second motor is connected to a second screw rod, the second screw rod passes through the second fixed block, the second screw rod between the two fixed blocks is threadedly connected to the second moving plate, a side of the second moving plate away from the second motor is fixedly connected to a plurality of evenly distributed second connecting rods, the second fixed block fixedly connected to the supporting platform is fixedly connected to the second connecting rod, a second positioning rod passes through the second moving plate, and the second fixed block fixedly connected to the longitudinal moving frame is fixedly connected to the second positioning rod.

2. The portable large-scale wind turbine operation and maintenance brake block lifting device according to claim 1 is characterized in that: The scissor-type lifting assembly includes a plurality of cross-arranged scissor arms, the upper and lower connected scissor arms are connected by a rotating shaft, the cross-arranged scissor arms are connected by a middle rotating shaft, corresponding reinforcement rods are fixedly connected between the front and rear corresponding scissor arms, a hydraulic cylinder is connected between the two diagonally arranged reinforcement rods at the bottom, both ends of the hydraulic cylinder are connected to the reinforcement rods by a rotating shaft, the hydraulic cylinder is connected to a power unit by a high-pressure oil pipe, and the power unit is installed on the chassis.

3. The portable large-scale wind turbine operation and maintenance brake block lifting device according to claim 2 is characterized in that: The rightmost scissor arm end at the bottom is rotatably connected to the base frame via a rotating shaft, the rightmost scissor arm end at the top is rotatably connected to the top frame via a rotating shaft, the leftmost scissor arm end at the bottom is slidably connected to the base frame, and the leftmost scissor arm end at the bottom is slidably connected to the top frame.

4. The portable large-scale wind turbine operation and maintenance brake block lifting device according to claim 1 is characterized in that: A longitudinal positioning slide rail is provided on the top surface of the top frame, and the longitudinal positioning slide rail is slidably connected to the longitudinal movable frame. A transverse positioning slide rail is provided on the top surface of the longitudinal movable frame, and the transverse positioning slide rail is slidably connected to the supporting platform.

5. The portable large-scale wind turbine operation and maintenance brake block lifting device according to claim 1 is characterized in that: The retaining assembly includes a first rotating shaft installed on the vertical pole, the first rotating shaft is rotatably connected to a positioning tube, the bottom end surface of the positioning tube is rotatably connected to a threaded ring through a bearing, the threaded ring is threadedly connected to a threaded rod, the top end of the threaded rod is arranged in the positioning tube, and the bottom end surface of the threaded rod is connected to a suction cup through a second rotating shaft.

6. The portable large-scale wind turbine operation and maintenance brake block lifting device according to claim 5 is characterized in that: A limiting slide groove is provided on the outer wall of the threaded rod, a limiting slide bar is arranged in the limiting slide groove, the limiting slide bar is fixed on the inner wall of the positioning tube, a first magnet is fixedly connected to a side of the positioning tube close to the vertical pole, and a second magnet is fixed at a position on the vertical pole corresponding to the first magnet.

7. The portable large-scale wind turbine operation and maintenance brake block lifting device according to claim 1 is characterized in that: The horizontal adjustment assembly includes a fixed plate fixedly connected to the base frame, a threaded tube is fixed to the middle position of the fixed plate, a threaded column is threadedly connected to the threaded tube, the bottom end surface of the threaded column is connected to a supporting foot via a bearing, and the top end surface of the threaded column is fixedly connected to a handle.

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