Safety rope fixing device for electric power overhaul tower climbing operation

Abstract

The invention relates to the technical field of electric power overhaul equipment, in particular to a safety rope fixing device for electric power overhaul tower climbing operation. The grapnel is arranged in the fixing frame; the locking part is arranged at the bottom of the claw hook; the first driving part is arranged at the top of the fixing frame and used for driving the locking part; the traction rope and the safety rope are arranged at the bottom of the fixing frame; the positioning part is arranged on the traction rope, comprises an overturning part and a second driving part, and is used for fixing the locking part; through the arrangement of the claw hooks, the locking parts, the driving parts and the traction ropes, firstly, the unmanned aerial vehicle drives the fixing frame to ascend to the top of the electric tower, a steel frame at the top of the electric tower is sleeved with the rack, then a baffle is pressed downwards, the baffle can drive the two downward pressing assemblies to move downwards, locking is completed, and finally when the electric tower is climbed, the electric tower can be conveniently climbed. A worker moves up and down through the traction rope, the traction rope is driven by the motor, the worker does not need to climb the tower, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance equipment, and in particular to a safety rope fixing device for electric power maintenance tower climbing operations. Background Art

[0002] Transmission lines are an important part of the power supply system, which not only affects people's daily life, but also affects the normal production of enterprises. The daily operation and maintenance of power towers, as the most important link to ensure the normal power supply of the power system, has long been the focus of operation and maintenance of power supply companies.

[0003] At present, workers in power grid units need to climb power towers frequently during their daily operation and maintenance of power towers. The first worker to climb the tower does so without a traction safety rope. Affected by factors such as the climbing environment and the psychological quality of the workers, there is a possibility that the workers and the tools they carry may fall accidentally, and the climbing risk is extremely high. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a safety rope fixing device for power maintenance tower climbing operations.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A safety rope fixing device for electric power maintenance tower climbing operation, comprising:

[0007] Fixed frame;

[0008] A grab hook is arranged in the fixing frame and is used to hang on the top of the electric tower;

[0009] A locking portion, disposed at the bottom of the grab hook, for locking the grab hook;

[0010] A first driving part, disposed on the top of the fixing frame, for driving the locking part;

[0011] The traction rope and the safety rope are arranged at the bottom of the fixing frame;

[0012] The positioning part is arranged on the traction rope and comprises a turning part and a second driving part, and is used for fixing the locking part.

[0013] Furthermore, the grab hook includes a top plate fixed in a fixed frame, a fixed plate is fixedly provided at one end of the top plate, a locking part is rotatably provided at the bottom of the fixed plate, and a movable plate is rotatably provided at the other end of the top plate, and the first driving part is respectively connected to the movable plate and the locking part.

[0014] Furthermore, the locking part includes a cover plate, a push plate connected to the first driving part is arranged at the top end of the cover plate, a locking plate is sleeved on the bottom end of the cover plate, a buffer plate is arranged on one side of the locking plate, a damper is also arranged between the buffer plate and the locking plate, a sliding groove is opened on the side wall of the cover plate, a return spring is arranged in the sliding groove, and the locking plate is connected to the inner wall of the sliding groove through the return spring, and the buffer plate is connected to the flipping part through the second driving part.

[0015] Furthermore, the first driving part includes a frame fixed on the fixed frame, a guide rod is arranged in the frame, a lifting slider is sleeved on the guide rod, a support rod is fixedly arranged on the top of the lifting slider, a first baffle is fixedly connected to the top of the support rod, the first baffle is connected to the second baffle through a connecting rod, a first pressing assembly connected to the movable plate is arranged on one side of the lifting slider, a second pressing assembly connected to the locking part is arranged on the other side of the lifting slider, and the lifting slider is also connected to a clamping part arranged outside the frame.

[0016] Furthermore, the first pressing assembly includes a first pressing plate connected to a lifting slider, a connecting plate is provided at the bottom of the first pressing plate, a telescopic rod is fixedly connected to the connecting plate, a first pressing rod is provided at the bottom of the telescopic rod, and the telescopic rod is slidably connected to the first pressing rod, a locking spring is provided between the first pressing rod and the connecting plate and is sleeved on the telescopic rod, a mounting frame located in the fixed frame is provided at the bottom of the first pressing rod, a first limiting slider slidably connected to the fixed frame is provided on one side of the mounting frame, a first push rod is rotatably provided on the first limiting slider, and an end of the first push rod away from the first limiting slider is rotatably connected to the movable plate.

[0017] Furthermore, the second pressing assembly includes a second pressing plate connected to the lifting slider, a second pressing rod is arranged at the bottom of the second pressing plate, a second limiting slider slidably connected to the fixed frame is arranged on one side of the second pressing rod, and a second push rod for pushing the locking part is arranged at the bottom of the second limiting slider.

[0018] Furthermore, the clamping part includes a bracket fixed on the frame, a first movable rod is rotatably provided at one end of the bracket, and the lifting slider is slidably connected to the first movable rod, a movable slider is slidably provided at the other end of the bracket, a second movable rod is rotatably provided on the movable slider, the second movable rod is rotatably connected to the first movable rod through a movable shaft, and the movable shaft is slidably connected to the first movable rod, a first protrusion is provided on the first movable rod, a first sleeve is sleeved on the first protrusion, a second protrusion is provided on the second movable rod, a second sleeve is sleeved on the second protrusion, and a limiting spring is provided between the first sleeve and the second sleeve.

[0019] Furthermore, the flipping part includes a flipping plate rotatably connected to the fixed frame, a fixed pulley is provided at one end of the flipping plate, the traction rope is looped on the fixed pulley, a limiting plate is provided at the other end of the flipping plate, a bent spring is provided between the flipping plate and the fixed frame, and the locking plate is connected to the flipping plate through a second driving part.

[0020] Furthermore, the second driving part includes a first connecting block arranged on the locking plate and a second connecting block arranged on the flip plate, guide rollers are arranged on the grab hook and the fixing frame, and a pull rope sleeved on the guide roller is arranged between the first connecting block and the second connecting block.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention is provided with a grab hook, a locking part, a driving part and a traction rope. First, the fixed frame is driven by the drone to rise to the top of the power tower, and the frame is sleeved on the steel frame on the top of the power tower. Then, the baffle is pressed down, and the baffle drives the two pressing components to move downward. The first pressing component can push the movable plate to move toward the direction of the steel frame to achieve pre-compression, and the second pressing component can push the locking part to flip, and lock and fix the steel frame from the bottom. Finally, when climbing the tower, the staff has two safety ropes, one is sleeved on the safety rope, and the other is fixed on the traction rope, and the traction rope is driven by the motor, so as to drive the staff to move up, and the staff does not need to climb the tower by themselves, which saves time and effort. When using the traction rope, a gravity will be given to the fixed pulley, forcing the fixed pulley to flip downward. The flipping of the fixed pulley will tighten the pull rope, so that the locking plate tightly locks the movable plate to increase stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the locking mechanism of the present invention;

[0026] Figure 3 is a schematic structural diagram of the first driving unit of the present invention;

[0027] Figure 4 is a structural schematic diagram of the first pressing component of the present invention;

[0028] Figure 5 is a schematic diagram of the connection between the first push-down rod and the mounting frame of the present invention;

[0029] Figure 6is a schematic structural diagram of the second pressing assembly of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the pressing part of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the turning part of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of the second driving unit of the present invention.

[0033] In the figure: 1, fixed frame; 2, grab hook; 21, top plate; 22, fixed plate; 23, movable plate; 3, locking part; 31, cover plate; 32, push plate; 33, locking plate; 34, buffer plate; 35, damper; 36, reset spring; 4, first driving part; 41, frame; 42, guide rod; 43, lifting slider; 44, support rod; 45, first baffle; 46, second baffle; 47, first pressing assembly; 471, first pressing plate; 472, connecting plate; 473, telescopic rod; 474, first pressing rod; 475, locking spring; 476, mounting frame; 477, first limit slider; 478, first push rod; 48, second pressing assembly Components; 481, second lower pressure plate; 482, second lower pressure rod; 483, second limit slider; 484, second push rod; 49, clamping part; 491, bracket; 492, first movable rod; 493, second movable rod; 4931, movable slider; 494, movable shaft; 495, first protrusion; 496, second protrusion; 497, first sleeve; 498, second sleeve; 499, limit spring; 5, flip part; 51, flip plate; 52, fixed pulley; 53, limit plate; 54, bent spring; 6, traction rope; 7, safety rope; 8, second driving part; 81, first connecting block; 82, guide roller; 83, second connecting block; 84, pull rope. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] Reference Figure 1-Figure 9 As shown, a safety rope fixing device for electric power maintenance tower climbing operation comprises:

[0037] The fixed frame 1 is driven upward by the drone and directly rises to the top of the power tower;

[0038] The grab hook 2 is arranged in the fixing frame 1 and is used to be hung on the steel frame at the top of the electric tower;

[0039] The locking part 3 is arranged at the bottom of the grab hook 2, and can be used to lock the grab hook 2 after the grab hook 2 is hung on the steel frame;

[0040] The first driving part 4 is arranged on the top of the fixing frame 1 and is used to drive the locking part 3 to move;

[0041] The traction rope 6 and the safety rope 7 are arranged at the bottom of the fixed frame 1. The staff is equipped with two safety ropes, one of which is put on the safety rope 7 and can slide on the safety rope 7. The safety rope is provided with a self-locking component. In case of an accident, the safety rope can be self-locked to ensure the personal safety of the staff. The other safety rope is fixed on the traction rope 6. A wire-releasing roller and a wire-receiving roller can be arranged at the bottom of the traction rope 6. When the traction rope 6 rises, the wire is first released through the wire-releasing roller. When in use, the wire-receiving roller can be driven to rotate by a motor, thereby driving the staff to move up, without the need for the staff to manually climb the tower, saving time and effort.

[0042] The positioning part is arranged on the traction rope 6, and includes a flipping part 5 and a second driving part 8, and is used to fix the locking part 3. When the traction rope 6 is in use, it will be subjected to a gravity, and the gravity can be used to start the second driving part 8, and the flipping part 5 is driven by the second driving part 8, so as to position the locking part 3.

[0043] In one embodiment, the grab hook 2 includes a top plate 21 fixed in the fixing frame 1, a fixing plate 22 is fixedly provided at one end of the top plate 21, a locking portion 3 is rotatably provided at the bottom of the fixing plate 22, and a movable plate 23 is rotatably provided at the other end of the top plate 21. The first driving portion 4 is respectively connected to the movable plate 23 and the locking portion 3. The movable plate 23 is initially opened outward, mainly to facilitate the grab hook 2 to be put on the steel frame.

[0044] In one embodiment, the locking portion 3 includes a cover plate 31, a push plate 32 connected to the first driving portion 4 is provided at the top of the cover plate 31, a locking plate 33 is sleeved at the bottom of the cover plate 31, a buffer plate 34 is provided on one side of the locking plate 33, a damper 35 is further provided between the buffer plate 34 and the locking plate 33, a sliding groove is provided on the side wall of the cover plate 31, a return spring 36 is provided in the sliding groove, and the locking plate 33 is connected to the inner wall of the sliding groove through the return spring 36, and the buffer plate 34 is connected to the flip portion 5 through the second driving portion 8;

[0045] After the cover plate 31 is flipped upward, it is made to be close to the bottom of the movable plate 23, and at this time, the locking plate 33 can be driven to move inward. When tightening, the locking plate 33 can be moved a further distance. After the buffer plate 34 is attached to the movable plate 23, the locking plate 33 will continue to move forward. At this time, the middle damper 35 can be used as a buffer, which is also to avoid some errors and increase the service life of the equipment.

[0046] In one embodiment, the first driving part 4 includes a frame 41 fixed on the fixed frame 1, a guide rod 42 is arranged in the frame 41, a lifting slider 43 is sleeved on the guide rod 42, a support rod 44 is fixedly arranged on the top of the lifting slider 43, a first baffle 45 is fixedly connected to the top of the support rod 44, the first baffle 45 is connected to the second baffle 46 through a connecting rod, a first pressing component 47 connected to the movable plate 23 is arranged on one side of the lifting slider 43, a second pressing component 48 connected to the locking part 3 is arranged on the other side of the lifting slider 43, and the lifting slider 43 is also connected to a pressing part 49 arranged outside the frame 41;

[0047] Since the fixing device is driven by a drone, at the beginning of the ascending stage, the clamp on the drone is clamped between the first baffle 45 and the second baffle 46, which is to facilitate the subsequent downward pressure. After moving to the top of the tower, by pressing the baffle down, the baffle pushes the lifting slider 43 downward through the support rod 44, and the first pressing component 47, the second pressing component 48 and the clamping part 49 can be driven at the same time, wherein the first pressing component 47 is used to pre-press the movable plate 23 to ensure that the buffer plate 34 is located after the locking part 3 is flipped upward. On the outside of the movable plate 23, the second pressing component 48 is used to drive the locking part 3. After pushing the push plate 32, the entire locking part 3 can be flipped upward. The clamping part 49 is mainly used to maintain a certain clamping effect after the two pressing components are fully pressed down to prevent the pressing components from bouncing upward. The principle is that the clamping part 49 has an upward elastic force at the beginning. When pressing down, the elastic force will become greater. When crossing the threshold, the elastic force will change direction and turn downward. The trigger condition of this threshold is that the pressing component is fully pressed down.

[0048] In one embodiment, the first pressing assembly 47 includes a first pressing plate 471 connected to the lifting slider 43, a connecting plate 472 is provided at the bottom of the first pressing plate 471, a telescopic rod 473 is fixedly connected to the connecting plate 472, a first pressing rod 474 is provided at the bottom of the telescopic rod 473, and the telescopic rod 473 is slidably connected to the first pressing rod 474, a locking spring 475 sleeved on the telescopic rod 473 is provided between the first pressing rod 474 and the connecting plate 472, a mounting frame 476 located in the fixing frame 1 is provided at the bottom end of the first pressing rod 474, a first limiting slider 477 slidably connected to the fixing frame 1 is provided on one side of the mounting frame 476, a first push rod 478 is rotatably provided on the first limiting slider 477, and one end of the first push rod 478 away from the first limiting slider 477 is rotatably connected to the movable plate 23;

[0049] After the lifting slider 43 moves downward, the telescopic rod 473 will be pushed by the first downward pressure plate 471, and the telescopic rod 473 will initially push the first downward pressure rod 474 downward, and the first downward pressure rod 474 will drive the first push rod 478 to deflect through the mounting frame 476, thereby pressing against the movable plate 23 to complete the pre-compression. At this time, if the telescopic rod 473 continues to move downward, it will slide in the first downward pressure rod 474 and compress the locking spring 475, which has a certain buffering amount.

[0050] In one embodiment, the second pressing assembly 48 includes a second pressing plate 481 connected to the lifting slider 43, a second pressing rod 482 is provided at the bottom of the second pressing plate 481, a second limiting slider 483 slidably connected to the fixing frame 1 is provided on one side of the second pressing rod 482, and a second push rod 484 for pushing the locking portion 3 is provided at the bottom of the second limiting slider 483;

[0051] When the first lower pressure plate 471 moves downward, the lifting slider 43 will drive the second lower pressure rod 482 to move downward through the second lower pressure plate 481, and the second lower pressure rod 482 will push the second push rod 484 through the second limit slider 483, and the second push rod 484 will push the push plate 32, so that the cover plate 31 flips upward.

[0052] In one embodiment, the pressing portion 49 includes a bracket 491 fixed to the frame 41, a first movable rod 492 is rotatably provided at one end of the bracket 491, and the lifting slider 43 is slidably connected to the first movable rod 492, a moving slider 4931 is slidably provided at the other end of the bracket 491, a second movable rod 493 is rotatably provided on the moving slider 4931, the second movable rod 493 is rotatably connected to the first movable rod 492 through a movable shaft 494, and the movable shaft 494 is slidably connected to the first movable rod 492, this movable shaft 494 is fixed to the lifting slider 43, a first protrusion 495 is provided on the first movable rod 492, a first sleeve 497 is sleeved on the first protrusion 495, a second protrusion 496 is provided on the second movable rod 493, a second sleeve 498 is sleeved on the second protrusion 496, and a limiting spring 499 is provided between the first sleeve 497 and the second sleeve 498;

[0053] When the two pressing components are started, the first movable rod 492 and the second movable rod 493 are also pushed downward, wherein a small protrusion is provided on the lifting slider 43, and a movable groove adapted to the small protrusion is provided on the rear side of the first movable rod 492. In this way, when the lifting slider 43 moves downward, the movable shaft 494 is driven to move downward, and the small protrusion slides along the movable groove, and drives the first movable rod 492 to deflect downward, and the first movable rod 492 slides along the movable shaft 494, and the second movable rod 492 drives the second movable rod 493 to deflect downward together through the movable shaft 494, and the second movable rod 492 When the movable rod 493 deflects downward, it will push the movable slider 4931 outward, so that the first sleeve 497 and the second sleeve 498 move away from each other, which will stretch the limit spring 499. When the movable rod continues to deflect downward until the two movable rods are flush, the limit spring 499 is stretched to the maximum. At this time, when it continues to move downward, the movable rod will flip to the bottom, and the original upward elastic force will become downward, thereby directly pulling the second movable rod 492 inward, thereby giving the lifting slider 43 a downward force to press the lifting slider 43 to prevent the lifting slider 43 from accidentally bouncing upward.

[0054] In one embodiment, the flip part 5 includes a flip plate 51 rotatably connected to the fixed frame 1, a fixed pulley 52 is provided at one end of the flip plate 51, the traction rope 6 is sleeved on the fixed pulley 52, a limit plate 53 is provided at the other end of the flip plate 51, a bent spring 54 is provided between the flip plate 51 and the fixed frame 1, and the locking plate 33 is connected to the flip plate 51 through the second driving part 8;

[0055] The flip part 5 is used together with the second driving part 8 and the traction rope 6. When the traction rope 6 is used, it will be subjected to a downward pulling force, thereby driving the flip plate 51 to rotate downward. When the flip plate 51 rotates, the second driving part 8 will tighten the locking plate 33, so that the locking plate 33 is pressed against the movable plate 23 to prevent the movable plate 23 from accidentally falling off.

[0056] In one embodiment, the second driving part 8 includes a first connecting block 81 disposed on the locking plate 33 and a second connecting block 83 disposed on the flip plate 51, guide rollers 82 are disposed on the grab hook 2 and the fixing frame 1, and a pull rope 84 sleeved on the guide roller 82 is disposed between the first connecting block 81 and the second connecting block 83;

[0057] When the flip plate 51 rotates, the flip plate 51 will pull the pull rope 84, and the pull rope 84 will be pulled along the guide roller 82, thereby pulling the locking plate 33 to move inward, and locking the movable plate 23.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A safety rope fixing device for electric power maintenance tower climbing operation, characterized in that: include: Fixed frame (1); A grab hook (2) is arranged in the fixing frame (1) and is used for hanging on the top of the electric tower; A locking portion (3) is arranged at the bottom of the grab hook (2) and is used to lock the grab hook (2); A first driving part (4) is arranged on the top of the fixing frame (1) and is used to drive the locking part (3); A traction rope (6) and a safety rope (7) are arranged at the bottom of the fixing frame (1); The positioning part is arranged on the traction rope (6), and comprises a turning part (5) and a second driving part (8), and is used to fix the locking part (3).

2. A safety rope fixing device for electric power maintenance tower climbing work according to claim 1, characterized in that: The grab hook (2) comprises a top plate (21) fixed in a fixing frame (1), a fixing plate (22) being fixedly arranged at one end of the top plate (21), a locking portion (3) being rotatably arranged at the bottom of the fixing plate (22), a movable plate (23) being rotatably arranged at the other end of the top plate (21), and a first driving portion (4) being respectively connected to the movable plate (23) and the locking portion (3).

3. A safety rope fixing device for electric power maintenance tower climbing work according to claim 2, characterized in that: The locking portion (3) comprises a cover plate (31), a push plate (32) connected to the first driving portion (4) is arranged at the top end of the cover plate (31), a locking plate (33) is sleeved at the bottom end of the cover plate (31), a buffer plate (34) is arranged on one side of the locking plate (33), a damper (35) is arranged between the buffer plate (34) and the locking plate (33), a sliding groove is opened on the side wall of the cover plate (31), a return spring (36) is arranged in the sliding groove, and the locking plate (33) is connected to the inner wall of the sliding groove through the return spring (36), and the buffer plate (34) is connected to the flip portion (5) through the second driving portion (8).

4. A safety rope fixing device for electric power maintenance tower climbing work according to claim 2, characterized in that: The first driving part (4) comprises a frame (41) fixed on the fixed frame (1), a guide rod (42) is arranged in the frame (41), a lifting slider (43) is sleeved on the guide rod (42), a support rod (44) is fixedly arranged on the top of the lifting slider (43), a first baffle (45) is fixedly connected to the top of the support rod (44), the first baffle (45) is connected to the second baffle (46) through a connecting rod, a first pressing assembly (47) connected to the movable plate (23) is arranged on one side of the lifting slider (43), a second pressing assembly (48) connected to the locking part (3) is arranged on the other side of the lifting slider (43), and the lifting slider (43) is also connected to a pressing part (49) arranged outside the frame (41).

5. A safety rope fixing device for electric power maintenance tower climbing work according to claim 4, characterized in that: The first pressing assembly (47) comprises a first pressing plate (471) connected to the lifting slider (43); a connecting plate (472) is arranged at the bottom of the first pressing plate (471); a telescopic rod (473) is fixedly connected to the connecting plate (472); a first pressing rod (474) is arranged at the bottom of the telescopic rod (473); the telescopic rod (473) is slidably connected to the first pressing rod (474); a connecting plate (472) is arranged between the first pressing rod (474) and the connecting plate (472); A locking spring (475) is sleeved on the telescopic rod (473), and a mounting frame (476) located in the fixed frame (1) is arranged at the bottom end of the first downward pressing rod (474), and a first limiting slider (477) slidably connected to the fixed frame (1) is arranged on one side of the mounting frame (476), and a first push rod (478) is rotatably arranged on the first limiting slider (477), and one end of the first push rod (478) away from the first limiting slider (477) is rotatably connected to the movable plate (23).

6. A safety rope fixing device for electric power maintenance tower climbing work according to claim 4, characterized in that: The second pressing assembly (48) comprises a second pressing plate (481) connected to the lifting slider (43), a second pressing rod (482) is arranged at the bottom of the second pressing plate (481), a second limiting slider (483) slidably connected to the fixing frame (1) is arranged on one side of the second pressing rod (482), and a second push rod (484) for pushing the locking part (3) is arranged at the bottom of the second limiting slider (483).

7. A safety rope fixing device for electric power maintenance tower climbing work according to claim 4, characterized in that: The clamping portion (49) comprises a bracket (491) fixed on the frame (41), one end of the bracket (491) is rotatably provided with a first movable rod (492), and the lifting slider (43) is slidably connected to the first movable rod (492), the other end of the bracket (491) is slidably provided with a movable slider (4931), the movable slider (4931) is rotatably provided with a second movable rod (493), and the second movable rod (493) is connected to the first movable rod (492) through a movable shaft (494). 492) is rotatably connected, and the movable shaft (494) is slidably connected to the first movable rod (492), the first movable rod (492) is provided with a first protrusion (495), the first protrusion (495) is sleeved with a first sleeve (497), the second movable rod (493) is provided with a second protrusion (496), the second protrusion (496) is sleeved with a second sleeve (498), and a limit spring (499) is provided between the first sleeve (497) and the second sleeve (498).

8. A safety rope fixing device for electric power maintenance tower climbing work according to claim 3, characterized in that: The flipping part (5) comprises a flipping plate (51) rotatably connected to the fixing frame (1); a fixed pulley (52) is arranged at one end of the flipping plate (51); a traction rope (6) is sleeved on the fixed pulley (52); a limiting plate (53) is arranged at the other end of the flipping plate (51); a bent spring (54) is arranged between the flipping plate (51) and the fixing frame (1); and a locking plate (33) is connected to the flipping plate (51) via a second driving part (8).

9. A safety rope fixing device for electric power maintenance tower climbing work according to claim 8, characterized in that: The second driving part (8) comprises a first connecting block (81) arranged on the locking plate (33) and a second connecting block (83) arranged on the flip plate (51); guide rollers (82) are arranged on the grab hook (2) and the fixing frame (1); and a pull rope (84) sleeved on the guide roller (82) is arranged between the first connecting block (81) and the second connecting block (83).

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