Transmission pulley for power transmission line maintenance auxiliary tool

By designing suspended electric personnel trolleys and tool trolleys, the problem of the inflexible movement of existing power transmission line maintenance tool trolleys has been solved, realizing efficient and safe tool transfer and high-altitude operation requirements, and improving the safety and efficiency of high-altitude operations.

CN121863232AInactive Publication Date: 2026-04-14JIYUAN CITY FENGYUAN POWER TECH LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIYUAN CITY FENGYUAN POWER TECH LTD
Filing Date
2025-12-08
Publication Date
2026-04-14
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing power transmission line maintenance tool pulleys are installed at low points, making it inconvenient for workers at height to access the tools and preventing them from moving flexibly, which affects the efficiency and safety of high-altitude operations.

Method used

A suspended electric trolley for carrying personnel and a tool trolley were designed. The suspended moving mechanism, combined with a drive wheel, limit wheel and support wheel, provides stable walking power. The trolley enables personnel operation through a self-locking hook and a safety belt. The tool trolley uses a pulley and rope structure to quickly tighten, and a centering valve component prevents rope tangling. The follow-up trolley frame can move with the operator.

Benefits of technology

It improves the safety and efficiency of high-altitude operations, reduces labor intensity, lowers operational risks, and enables flexible access and movement of tools, meeting various needs of high-altitude operations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121863232A_ABST
    Figure CN121863232A_ABST
Patent Text Reader

Abstract

The invention relates to a transmission line maintenance auxiliary tool transfer tackle which comprises a suspension type electric manned tackle and a tool tackle, the suspension type electric manned tackle comprises a shell, and a power assembly is arranged in the shell and used for driving the suspension type electric manned tackle to move along a cable; the front side and the rear side of the lower portion in the shell are each provided with a support, and a movement control and braking assembly is transversely installed in each support and used for controlling the power assembly to drive power control and braking when the suspension type electric manned tackle moves along the cable. The lower end of the support is sleeved with a self-locking hook used for being connected with a safety belt to achieve manned movement. A follow-up pulley frame is arranged in front of the suspension type electric manned pulley, a connecting rod is horizontally arranged on the lower portion of the follow-up pulley frame, and the follow-up pulley frame is connected with the tool pulley through the connecting rod and used for achieving tool transfer work of an electric power circuit. The device has the advantages that the structure is simple and reasonable, a suspension type moving mechanism is adopted, the flexibility is good, and tools are convenient to take and move.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention belongs to the technical field of transmission line maintenance tools, specifically relating to a transmission line maintenance auxiliary tool transfer trolley. Background Technology

[0002] During operation, power transmission lines are susceptible to damage or malfunctions due to natural or inherent factors. When a fault occurs near a pole or tower, workers can use this support to inspect or replace parts. However, when the fault occurs in the middle of the line or where there is no support, it becomes impossible to perform repairs as needed. Furthermore, high-voltage transmission line maintenance requires a wide variety of tools, and currently, maintenance work necessitates transporting various equipment and materials to high altitudes. Pullers are essential auxiliary tools used in power transmission line maintenance for transferring equipment, materials, and other items. However, current pulleys are installed at low points, making it inconvenient for workers at heights to access tools. Furthermore, pulleys are typically fixed to towers or insulating rods, requiring maintenance personnel to move them at height to retrieve spare parts or auxiliary tools. This lack of flexibility makes them impractical. Therefore, it is highly necessary to provide a power transmission line maintenance auxiliary tool transfer pulley with a simple and reasonable structure, a suspended moving mechanism, good flexibility, and convenient access and movement of tools. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a transmission line maintenance auxiliary tool transfer trolley with a simple and reasonable structure, a suspended moving mechanism, good flexibility, and convenient tool handling and movement.

[0004] The objective of this invention is achieved as follows: A transfer trolley for auxiliary tools in power transmission line maintenance includes a suspended electric personnel trolley and a tool trolley. The suspended electric personnel trolley includes a housing, inside which a power component is installed to drive the suspended electric personnel trolley to move along the cable. A set of brackets is installed on both the front and rear sides of the lower part of the housing. A movement control and braking component is installed laterally inside the brackets to control the power component driving the suspended electric personnel trolley to move along the cable and to brake it. A self-locking hook is fitted at the lower end of the bracket for connecting a safety belt to facilitate personnel movement. A follower trolley frame is provided at the front of the suspended electric personnel trolley, and a connecting rod is horizontally arranged at the lower part of the follower trolley frame. The follower trolley frame is connected to the tool trolley via the connecting rod to realize tool transfer work on power lines.

[0005] The power assembly includes a set of side plates arranged front and rear with a central opening. A set of active walking mechanisms is arranged on the upper left and right sides of the side plates. A main control box is installed on the lower part of each side plate. Support wheels are arranged on both sides of the lower part of the side plates. A base plate is fixedly connected to the lower part of the side plates. A power module is fixedly installed on the lower surface of the base plate.

[0006] The active walking mechanism includes a set of base frames, which are fixedly connected by multiple connecting screws. A protective shell is provided on the top of each base frame. A set of spaced-apart drive wheels are installed on the inner side of each base frame. Each drive wheel is connected to a large gear shaft located inside the base frame. The large gears are connected to each other by small gears. The small gears are powered by the output end of the driver. Rotary bending frames are installed on both sides of the base frame. Each rotary bending frame is provided with a limit wheel. The axis of the limit wheel is perpendicular to that of the drive wheel.

[0007] The support wheel includes a set of diagonal bracing frames fixedly installed on the upper surface of the base plate, and the base wheel is installed inside the diagonal bracing frames.

[0008] The upper end of the bracket is connected to the suspended electric manned trolley via a locking mechanism, the lower middle part is connected to the movement control and braking components, and the lower end is connected to the self-locking hook via a shaft. The locking mechanism includes a set of double-ended threaded rods located on the upper surface of the base plate. The double-ended threaded rods are fixedly connected to the base plate by multiple locking nuts spaced apart. Both ends of the double-ended threaded rods are connected to the bracket via connecting bolts.

[0009] The motion control and braking assembly includes a horizontal tube, with a control box and a brake box installed on both sides of the horizontal tube where it connects to the bracket, and a throttle control lever and a brake control lever connected to the free ends of the horizontal tube, respectively.

[0010] The follower trolley frame includes a follower frame, and a connecting frame is provided below the follower frame. The connecting frame is connected to the tool trolley through a connecting rod. Bottom single rollers are installed on both the front and rear sides of the lower part of the follower frame, and top double rollers are installed on both the front and rear sides of the upper part. A set of adaptive closed wheels is symmetrically arranged on the upper part of the follower frame, and the adaptive closed wheels are connected to the follower frame through an adjustment plate.

[0011] The tool trolley includes a trolley frame with a connecting plate on top. The upper corner of the connecting plate is connected to a connecting rod, the right corner is connected to the trolley frame by a pin, and the left corner is connected to an upper mounting plate by a pin. A sensing module is located below the connecting plate. A lever is located inside the upper mounting plate, and an eccentric wheel is mounted at the lower end of the upper mounting plate. The eccentric wheel is in rolling connection with the lower mounting plate below it. The lower mounting plate is connected to the trolley frame by a clamp and has a guide rod extending outward to the left. Multiple pulleys are located inside the lower part of the trolley frame. The pulleys are powered by a drive assembly. Centering valve assemblies are located on both the left and right sides of the trolley frame above the pulleys. The pulleys are fixed with a positioning and locking assembly.

[0012] The centering gate assembly includes a side beam clamping and positioning plate nested outside the trolley frame. The front and rear sides of the side beam clamping and positioning plate are connected to the trolley frame by a set of spring rods. The inner side of the side beam clamping and positioning plate is provided with a rectangular opening plate. The gate plate is installed inside the rectangular opening plate. The two sides of the movable gate are connected to the inner wall of the rectangular opening plate by multiple limiting springs.

[0013] The positioning and locking assembly includes a base plate, on the left and right sides of the front of the base plate respectively, a first gear and a second gear are respectively provided, the first gear and the second gear mesh with each other and are both axially connected to a clamping arm; a crank is axially connected to the front of the first gear, and a cylinder is connected to the free end of the crank.

[0014] The beneficial effects of this invention are as follows: This invention provides an auxiliary tool transfer trolley for power transmission line maintenance. In use, the self-locking hook of this suspended electric personnel-carrying trolley connects to a safety belt, enabling personnel transport. The power assembly of the suspended electric personnel-carrying trolley utilizes a drive wheel and limit wheel to provide a stable power source for movement, while simultaneously employing a support wheel structure to effectively ensure reliable movement along the power line, greatly improving personnel safety. This invention uses a tool trolley to lift tools, and the pulleys of the tool trolley utilize ropes or steel cables for quick and convenient tightening to lift the tools, reducing labor intensity, improving work efficiency, and lowering operational risks, thus providing good safety. Furthermore, the tool trolley employs a centering valve assembly. The design ensures the rope structure remains on the central pulley, preventing operators from becoming entangled or tripped by the large number of stacked steel cables, thus avoiding danger. The tool trolley of this invention is connected to a suspended electric personnel trolley via a follower trolley frame, allowing it to move freely along the power line. This enables the device to transfer tools using the power line as an axis, facilitating tool retrieval for workers at heights. Furthermore, it can move along the power line with the suspended electric personnel trolley, allowing for free movement alongside the operator and meeting various needs. This invention offers advantages such as simple and reasonable structure, a suspended moving mechanism, high flexibility, and ease of tool retrieval and movement. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention.

[0016] Figure 2 This is a partial front view of the suspended electric passenger trolley of the present invention.

[0017] Figure 3 For the present invention Figure 2 Partial three-dimensional diagram of the structure.

[0018] Figure 4 For the present invention Figure 3 Exploded view.

[0019] Figure 5 For the present invention Figure 4 A bottom view.

[0020] Figure 6 This is a side view of the follower trolley frame and tool trolley of the present invention.

[0021] Figure 7 For the present invention Figure 6 Side view of the follower trolley frame.

[0022] Figure 8 For the present invention Figure 7 A top view of the follower trolley frame.

[0023] Figure 9 This is a perspective view of the tool pulley of the present invention.

[0024] Figure 10 This is a schematic diagram of the positioning and locking assembly of the present invention.

[0025] In the diagram: 1. Suspended electric passenger trolley; 11. Outer shell; 12. Power assembly; 21. Side plate; 22. Active walking mechanism; 201. Base frame; 202. Connecting screw; 203. Protective shell; 204. Drive wheel; 205. Large gear; 206. Small gear; 207. Driver; 208. Rotating bending frame; 209. Limiting wheel; 23. Main control box; 24. Support wheel; 401. Diagonal brace; 402. Bottom wheel; 25. Bottom plate; 26. Power module; 13. Bracket; 31. Locking mechanism; 301. Double-ended threaded rod; 302. Locking nut; 303. Connecting bolt; 32. Shaft; 14. Movement control and braking assembly; 41. Horizontal tube; 42. Mounting control box; 43. Mounting brake box; 44. Throttle control lever; 45. Brake control lever; 15. Self-locking hook; 2. Cable; 3. Follow-up trolley frame. 311. Follower frame; 312. Connecting frame; 313. Bottom single roller; 314. Top double roller; 315. Adaptive closed wheel; 316. Adjusting plate; 4. Connecting rod; 5. Tool trolley; 51. Trolley frame; 52. Connecting plate; 53. Pin; 54. Sensing module; 55. Upper mounting plate; 56. Lever; 57. Eccentric wheel; 58. Lower mounting plate; 59. Fixture; 501. Guide rod; 502. Pulley; 503. Drive assembly; 504. Centering valve assembly; 411. Side beam clamping positioning plate; 412. Spring rod; 413. Rectangular opening plate; 414. Valve plate; 415. Limit spring; 505. Positioning locking assembly; 511. Base plate; 512. First gear; 513. Second gear; 514. Clamping arm; 515. Crank; 516. Cylinder; 506. Adjusting bolt; 507. Tightening bolt. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings. Example 1

[0027] like Figure 1-10As shown, a transmission line maintenance auxiliary tool transfer trolley includes a suspended electric personnel trolley 1 and a tool trolley 5. The suspended electric personnel trolley 1 includes a housing 11, inside which a power component 12 is installed to drive the suspended electric personnel trolley 1 to move along the cable 2. A set of brackets 13 is installed on both the front and rear sides of the lower part of the housing 11. A movement control and braking component 14 is installed horizontally inside the bracket 13 to control the power component 12 to drive the suspended electric personnel trolley 1 to move along the cable 2 and to brake it. A self-locking hook 15 is fitted at the lower end of the bracket 13 for connecting a safety belt to realize personnel movement. A follower trolley frame 3 is provided at the front of the suspended electric personnel trolley 1. A connecting rod 4 is horizontally provided at the lower part of the follower trolley frame 3. The follower trolley frame 3 is connected to the tool trolley 5 through the connecting rod 4 to realize the tool transfer work of the power line.

[0028] The power assembly 12 includes a set of side plates 21 arranged front and rear with a central opening. A set of active walking mechanisms 22 are arranged on the upper left and right sides of the side plates 21. A main control box 23 is installed on the lower part of each side plate 21. Support wheels 24 are arranged on both sides of the lower part of the side plates 21. A base plate 25 is fixedly connected to the lower part of the side plates 21. A power module 26 is fixedly installed on the lower surface of the base plate 25.

[0029] The active walking mechanism 22 includes a set of base frames 201, which are fixedly connected by multiple connecting screws 202. A protective shell 203 is provided on the top of each base frame 201. A set of spaced-apart drive wheels 204 are installed on the inner side of each base frame 201. Each drive wheel 204 is connected to a shaft of a large gear 205 located inside the base frame 201. The large gears 205 are connected to each other by a small gear 206. The small gear 206 is poweredly connected to the output end of the driver 207. Rotary bending frames 208 are installed on both sides of the base frame 201. Each rotary bending frame 208 is provided with a limiting wheel 209. The axis of the limiting wheel 209 is perpendicular to the axis of the drive wheel 204.

[0030] The support wheel 24 includes a set of diagonal bracing frames 401 fixedly installed on the upper surface of the base plate 25, and the diagonal bracing frames 401 have bottom wheels 402 installed inside them.

[0031] In this embodiment, when the suspended electric trolley needs to travel along the power line, the operator only needs to twist the throttle control lever to achieve smooth and reliable movement along the cable. When the throttle control lever is twisted, a corresponding control signal is transmitted to the control box, and then the signal is transmitted to the main control box for processing and to control the start of the driver. The driver drives two large gears to rotate synchronously through a small gear, thereby achieving synchronous rotation of the drive wheel. Changing the rotation direction of the driver can realize the forward and reverse rotation of the drive wheel, realizing forward or backward operation along the cable. This invention uses two symmetrically arranged sets of power wheel structures (each set uses two power wheels) as the power source for the suspended electric trolley, ensuring sufficient power and reliable movement. The two sets of power wheels travel along the upper surface of the cable, and the bottom wheel of the support wheel is in contact with the lower surface of the cable, so that the cable is always under the power. Within the space between the drive wheel and the support wheel, limit wheels are positioned on both sides of the base frame, and these limit wheels are symmetrically arranged. This creates a closed space formed by the drive wheel, support wheel, and limit wheels, ensuring the cable is within this closed space. This makes the suspended electric trolley safer and more reliable when carrying people on the cable, preventing the device from detaching from the cable. Furthermore, the connection between the rotating bending frame and the outer end of the base frame can be achieved through various adjustable methods, such as a rotary connection, a unidirectional rotary connection with ratchet and pawl, a sliding adjustment connection with a slide block, or a sliding adjustment connection with a gear and rack. These methods allow for adjustments based on the cable's configuration. The limit wheels can also be used as auxiliary wheels in other special situations, such as when traveling on "T"-shaped or "I"-shaped tracks.

[0032] The upper end of the bracket 13 is connected to the suspended electric manned trolley 1 via a locking mechanism 31, the lower middle part is connected to the movement control and braking assembly 14, and the lower end is connected to the self-locking hook 15 via a shaft 32. The locking mechanism 31 includes a set of double-ended threaded rods 301 located on the upper surface of the base plate 25. The double-ended threaded rods 301 are fixedly connected to the base plate 25 by a plurality of locking nuts 302 spaced apart. Both ends of the double-ended threaded rods 301 are connected to the bracket 13 via connecting bolts 303.

[0033] The motion control and braking assembly 14 includes a horizontal tube 41. A control box 42 and a brake box 43 are respectively installed on both sides of the horizontal tube 41 where it connects to the bracket 13. The free ends of the horizontal tube 41 are respectively connected to a throttle control lever 44 and a brake control lever 45.

[0034] In this embodiment, the suspended electric manned trolley of the present invention uses two sets of servo motors as drivers, which can be freely adjusted in speed from 0.5m / s to 1m / s. It can be operated by a single person and is portable. It is equipped with a manual brake for braking at any time to ensure safety.

[0035] This invention relates to a transfer trolley for auxiliary tools used in power transmission line maintenance. In use, the self-locking hook 15 of the suspended electric personnel-carrying trolley 1 connects to the safety belt, enabling personnel transport. The power assembly 12 of the suspended electric personnel-carrying trolley 1 utilizes the drive wheel 204 and the limit wheel 209 to provide a stable power source for movement, while simultaneously working with the support wheel 24 to effectively ensure reliable movement along the cable 2, greatly improving personnel safety. This invention also employs a tool trolley 5 to lift tools. The pulley 502 of the tool trolley 5 utilizes ropes or steel cables for quick and convenient tightening to lift the tools, reducing labor intensity, improving work efficiency, and lowering operational risks, thus providing good safety. Furthermore, the tool trolley 5 uses a centering valve assembly. Component 504 ensures that the rope structure remains on the pulley 502 in the middle, preventing operators from being entangled or tripped by the large number of steel cables piled together, thus avoiding danger. The tool trolley 5 of this invention is connected to the suspended electric personnel trolley 1 via the follower trolley frame 3, and can move freely following its movement on the cable 2. This allows the device to perform tool transfer work with the power line as the axis, making it convenient for high-altitude workers to retrieve tools. It can also move along the power line with the suspended electric personnel trolley 1, thus following the operator and moving freely to meet various needs of the operator, facilitating the movement of tools at heights. This invention has the advantages of simple and reasonable structure, suspended moving mechanism, good flexibility, and convenient retrieval and movement of tools. Example 2

[0036] like Figure 1-10 As shown, a transmission line maintenance auxiliary tool transfer trolley includes a suspended electric personnel trolley 1 and a tool trolley 5. The suspended electric personnel trolley 1 includes a housing 11, inside which a power component 12 is installed to drive the suspended electric personnel trolley 1 to move along the cable 2. A set of brackets 13 is installed on both the front and rear sides of the lower part of the housing 11. A movement control and braking component 14 is installed horizontally inside the bracket 13 to control the power component 12 to drive the suspended electric personnel trolley 1 to move along the cable 2 and to brake it. A self-locking hook 15 is fitted at the lower end of the bracket 13 for connecting a safety belt to realize personnel movement. A follower trolley frame 3 is provided at the front of the suspended electric personnel trolley 1. A connecting rod 4 is horizontally provided at the lower part of the follower trolley frame 3. The follower trolley frame 3 is connected to the tool trolley 5 through the connecting rod 4 to realize the tool transfer work of the power line.

[0037] The follower trolley frame 3 includes a follower frame 311, and a connecting frame 312 is provided below the follower frame 311. The connecting frame 312 is connected to the tool trolley 5 through a connecting rod 4. The follower frame 311 has bottom single rollers 313 installed on both the front and rear sides of the lower part and top double rollers 314 installed on both the front and rear sides of the upper part. A set of adaptive closed wheels 315 are symmetrically arranged on the upper part of the follower frame 311. The adaptive closed wheels 315 are connected to the follower frame 311 through an adjusting plate 316.

[0038] In this embodiment, the follower trolley frame is used as a follower component for the movement of the suspended electric manned trolley, driving the tool trolley to move with the operator and meet the operator's tool usage needs. The bottom single roller of the follower trolley frame moves along the lower surface of the cable, while the top double rollers move along the upper surface of the cable. The adaptive closed wheel is connected to the follower frame by an adjustment plate to achieve the symmetrical spacing between the adaptive closed wheels on both sides, which is convenient to adjust according to the cable pattern. Of course, the adaptive closed wheel can also be used as a walking auxiliary wheel in other special cases, such as when moving on "T"-shaped or "I"-shaped tracks, the adaptive closed wheel is used as a side walking auxiliary wheel, so that the follower trolley frame can follow the suspended electric manned trolley to move in different road conditions without the need for other tools.

[0039] The tool trolley 5 includes a trolley frame 51, with a connecting plate 52 above the trolley frame 51. The upper corner of the connecting plate 52 is connected to the connecting rod 4, the right corner is connected to the trolley frame 51 by a pin 53, and the left corner is connected to the upper mounting plate 55 by a pin. A sensing module 54 is provided below the connecting plate 52. A lever 56 is provided inside the upper mounting plate 55, and an eccentric wheel 57 is mounted on the lower end of the upper mounting plate 55. The eccentric wheel 57 is rotatably connected to the lower mounting plate 58 below it. The lower mounting plate 58 is connected to the trolley frame 51 by a clamp 59. The lower mounting plate 58 is provided with a guide rod 501 that extends outward to the left. Multiple pulleys 502 are provided inside the lower part of the trolley frame 51. The pulleys 502 are powered by a drive assembly 503. Centering valve assemblies 504 are provided on both the left and right sides of the trolley frame 51 at the upper position of the pulleys 502. The pulleys 502 are fixed with positioning locking assemblies 505.

[0040] In this embodiment, the operator guides the rope device using a guide rod, causing the eccentric wheel and upper mounting plate to rotate as a whole. This allows the rope device to fall into the tool trolley, where it is locked by a positioning and locking assembly. When lifting tools, the drive assembly is activated, causing the pulley to rotate and thus quickly and easily tightening the rope or cable to lift the tool. The tool trolley of this invention can also be operated using a drone for tool lifting or power line laying operations. The drone carries a guide rope, which is then deployed into the tool trolley. After triggering the eccentric rotation module, the guide rope enters the trolley. The centering valve assembly guides the rope to the corresponding guide wheel / pulley, where it is then locked by the positioning and locking assembly according to actual needs, completing the tool lifting or laying operation.

[0041] The centering valve assembly 504 includes a side beam clamping and positioning plate 411 nested outside the trolley frame 51. The side beam clamping and positioning plate 411 is connected to the trolley frame 51 by a set of spring rods 412 on both the front and rear sides. The side beam clamping and positioning plate 411 is provided with a rectangular opening plate 413 on the inner side. A valve plate 414 is installed inside the rectangular opening plate 413. The two sides of the valve plate 414 are connected to the inner wall of the rectangular opening plate 413 by multiple limiting springs 415.

[0042] The positioning and locking assembly 505 includes a base plate 511. A first gear 512 and a second gear 513 are respectively provided on the left and right sides of the front of the base plate 511. The first gear 512 and the second gear 513 mesh with each other and are axially connected to a clamping arm 514. A crank 515 is axially connected to the front of the first gear 512, and a cylinder 516 is connected to the free end of the crank 515.

[0043] In this embodiment, the working principle of the positioning and locking assembly is as follows: when the rope structure falls into the cavity between the clamping arms of the positioning and locking assembly, the cylinder is activated. The cylinder drives the first gear to rotate through the crank. Since the first gear and the second gear mesh with each other, the cylinder drives the gear to rotate synchronously, thereby driving the clamping arms to clamp and open synchronously, locking the rope. The positioning and locking assembly of the present invention adopts a pneumatic drive structure for fast and reliable locking of ropes. It has a simple structure and good locking effect.

[0044] This invention relates to a transfer trolley for auxiliary tools used in power transmission line maintenance. In use, the self-locking hook 15 of the suspended electric personnel-carrying trolley 1 connects to the safety belt, enabling personnel transport. The power assembly 12 of the suspended electric personnel-carrying trolley 1 utilizes the drive wheel 204 and the limit wheel 209 to provide a stable power source for movement, while simultaneously working with the support wheel 24 to effectively ensure reliable movement along the cable 2, greatly improving personnel safety. This invention also employs a tool trolley 5 to lift tools. The pulley 502 of the tool trolley 5 utilizes ropes or steel cables for quick and convenient tightening to lift the tools, reducing labor intensity, improving work efficiency, and lowering operational risks, thus providing good safety. Furthermore, the tool trolley 5 uses a centering valve assembly. Component 504 ensures that the rope structure remains on the pulley 502 in the middle, preventing operators from being entangled or tripped by the large number of steel cables piled together, thus avoiding danger. The tool trolley 5 of this invention is connected to the suspended electric personnel trolley 1 via the follower trolley frame 3, and can move freely following its movement on the cable 2. This allows the device to perform tool transfer work with the power line as the axis, making it convenient for high-altitude workers to retrieve tools. It can also move along the power line with the suspended electric personnel trolley 1, thus following the operator and moving freely to meet various needs of the operator, facilitating the movement of tools at heights. This invention has the advantages of simple and reasonable structure, suspended moving mechanism, good flexibility, and convenient retrieval and movement of tools.

Claims

1. A transfer trolley for auxiliary tools in power transmission line maintenance, comprising a suspended electric personnel trolley and a tool trolley, characterized in that: The suspended electric trolley includes an outer shell, inside which a power component is installed to drive the suspended electric trolley to move along the cable. A set of brackets is installed on both the front and rear sides of the lower part of the outer shell. A movement control and braking component is installed laterally inside each bracket to control the power component driving the suspended electric trolley to move along the cable and to brake it. A self-locking hook is fitted at the lower end of each bracket for connecting a safety belt to facilitate passenger movement. A follower trolley frame is installed at the front of the suspended electric trolley. A connecting rod is horizontally installed at the lower part of the follower trolley frame, which is connected to a tool trolley via the connecting rod to facilitate tool transfer along the power line.

2. The transmission line maintenance auxiliary tool transfer trolley as described in claim 1, characterized in that: The power assembly includes a set of side plates arranged front and rear with a central opening. A set of active walking mechanisms is arranged on the upper left and right sides of the side plates. A main control box is installed on the lower part of each side plate. Support wheels are arranged on both sides of the lower part of the side plates. A base plate is fixedly connected to the lower part of the side plates. A power module is fixedly installed on the lower surface of the base plate.

3. The transmission line maintenance auxiliary tool transfer trolley as described in claim 2, characterized in that: The active walking mechanism includes a set of base frames, which are fixedly connected by multiple connecting screws. A protective shell is provided on the top of each base frame. A set of spaced-apart drive wheels are installed on the inner side of each base frame. Each drive wheel is connected to a large gear shaft located inside the base frame. The large gears are connected to each other by small gears. The small gears are powered by the output end of the driver. Rotary bending frames are installed on both sides of the base frame. Each rotary bending frame is provided with a limit wheel. The axis of the limit wheel is perpendicular to that of the drive wheel.

4. The transmission line maintenance auxiliary tool transfer trolley as described in claim 2, characterized in that: The support wheel includes a set of diagonal bracing frames fixedly installed on the upper surface of the base plate, and the base wheel is installed inside the diagonal bracing frames.

5. The transmission line maintenance auxiliary tool transfer trolley as described in claim 1, characterized in that: The upper end of the bracket is connected to the suspended electric manned trolley via a locking mechanism, the lower middle part is connected to the movement control and braking components, and the lower end is connected to the self-locking hook via a shaft. The locking mechanism includes a set of double-ended threaded rods located on the upper surface of the base plate. The double-ended threaded rods are fixedly connected to the base plate by multiple locking nuts spaced apart. Both ends of the double-ended threaded rods are connected to the bracket via connecting bolts.

6. The transmission line maintenance auxiliary tool transfer trolley as described in claim 5, characterized in that: The motion control and braking assembly includes a horizontal tube, with a control box and a brake box installed on both sides of the horizontal tube where it connects to the bracket, and a throttle control lever and a brake control lever connected to the free ends of the horizontal tube, respectively.

7. The transmission line maintenance auxiliary tool transfer trolley as described in claim 1, characterized in that: The follower trolley frame includes a follower frame, and a connecting frame is provided below the follower frame. The connecting frame is connected to the tool trolley through a connecting rod. The follower frame has bottom single rollers installed on both the front and rear sides of the lower part and top double rollers installed on both the front and rear sides of the upper part. A set of adaptive closed wheels is symmetrically arranged on the upper part of the follower frame. The adaptive closed wheels are connected to the follower frame through an adjustment plate.

8. The transmission line maintenance auxiliary tool transfer trolley as described in claim 7, characterized in that: The tool trolley includes a trolley frame with a connecting plate on top. The upper corner of the connecting plate is connected to a connecting rod, the right corner is connected to the trolley frame by a pin, and the left corner is connected to an upper mounting plate by a pin. A sensing module is located below the connecting plate. A lever is located inside the upper mounting plate, and an eccentric wheel is mounted at the lower end of the upper mounting plate. The eccentric wheel is in rolling connection with the lower mounting plate below it. The lower mounting plate is connected to the trolley frame by a clamp and has a guide rod extending outward to the left. Multiple pulleys are located inside the lower part of the trolley frame. The pulleys are powered by a drive assembly. Centering valve assemblies are located on both the left and right sides of the trolley frame above the pulleys. The pulleys are fixed with a positioning and locking assembly.

9. A transfer trolley for auxiliary tools in power transmission line maintenance as described in claim 8, characterized in that: The centering gate assembly includes a side beam clamping and positioning plate nested outside the trolley frame. The front and rear sides of the side beam clamping and positioning plate are connected to the trolley frame by a set of spring rods. The inner side of the side beam clamping and positioning plate is provided with a rectangular opening plate. The gate plate is installed inside the rectangular opening plate. The two sides of the movable gate are connected to the inner wall of the rectangular opening plate by multiple limiting springs.

10. The transmission line maintenance auxiliary tool transfer trolley as described in claim 8, characterized in that: The positioning and locking assembly includes a base plate, on the left and right sides of the front of the base plate respectively, a first gear and a second gear are respectively provided, the first gear and the second gear mesh with each other and are both axially connected to a clamping arm; a crank is axially connected to the front of the first gear, and a cylinder is connected to the free end of the crank.