A grid-locking traction device

Abstract

This invention relates to the field of power transmission line operations and provides a power grid sealing and traction device. The power grid sealing and traction device includes: a frame assembly with an opening for inserting a conductor; a traction assembly including a plurality of first rollers and a first drive device; the first rollers and the first drive device are disposed within the frame assembly, located at the top of the opening, the first rollers supporting the conductor and rolling relative to it, and the first drive device driving the first rollers to rotate; and a top-line assembly including a top rod, a second roller, and a second drive device; the second drive device driving the second roller to press against the conductor. The traction assembly rolls and pulls above the conductor, while the top-line assembly presses against the conductor from below. This dual-action structure of upper traction and lower pressing improves the smoothness of the traction action.

Description

Technical Field

[0001] This invention belongs to the field of power transmission line operation, and particularly relates to a power grid traction device. Background Technology

[0002] In high-altitude operations such as power grid maintenance and renovation, netting is a common protective measure. Insulating nets are laid beneath high-voltage transmission lines to prevent tools or materials from falling and damaging the lines or buildings below. During the operation, a traction device must travel along the high-voltage conductor, dragging the insulating net, which is attached to multiple locking devices, to the designated position, and then use the locking devices to secure and tension the net.

[0003] Existing traction devices are mostly designed for basic walking functions, with relatively simple structural designs and limited functionality. They primarily focus on traction power output while neglecting stability during the walking process. In actual operations, due to complex conditions such as ice or rust on the conductor surface, the traction device is prone to slippage or jamming during slope changes, leading to unstable traction and hindering the smooth progress of the netting operation.

[0004] Therefore, how to improve the stability of the traction device under complex track conditions has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a power grid traction device that solves the problem of traction device stability under complex line conditions.

[0006] The present invention is implemented as follows: a power grid closure traction device, the power grid closure traction device comprising: The frame assembly has openings for inserting wires; The traction assembly includes a plurality of first rollers and a first drive device; the first rollers and the first drive device are disposed within the frame assembly, located at the top of the opening, the first rollers are used to support the wire and roll relative to the wire, and the first drive device is used to drive the first rollers to rotate. The top wire assembly includes a top rod, a second roller, and a second drive device; the second drive device is disposed within the frame assembly, its output end is connected to the top rod, the end of the top rod is provided with the second roller, and the second drive device is used to drive the second roller to press against the wire.

[0007] Furthermore, the first roller is provided with a V-shaped groove for accommodating the wire, and the top wire assembly is inclinedly disposed inside the frame assembly. At least two sets of the top wire assembly are provided, which respectively abut the wire of the same first roller from two directions, and the top rod is perpendicular to the inclined surface of the V-shaped groove.

[0008] Furthermore, the second roller is an insulated pulley with a surface made of silicone rubber.

[0009] Furthermore, the frame assembly includes: The frame includes a lower step and an upper step. The lower step consists of two parts and forms a triangular structure with the upper step. The traction assembly is disposed on the upper step. The enclosure is located on both sides of the lower step, and the opening is located between the two opposing enclosures; The outer casing covers the frame, the housing, the traction assembly, and the top wire assembly.

[0010] Furthermore, the first roller and the first drive device are arranged on the same plane and located on the upper step. The first drive device is a motor, which drives the first roller to rotate via a belt conveyor.

[0011] Furthermore, a control module for controlling the traction assembly and the top wire assembly is provided inside the housing, and a door is provided outside the housing, with an antenna on the door for transmitting received signals to the control module.

[0012] Furthermore, the power grid sealing traction device also includes a fall protection component, which includes: A rotating rod, one end of which is rotatably connected to the frame assembly, is located at the opening; The connecting rod is connected to the rotating rod at one end and to the pull rod at the other end. A tie rod extends longitudinally through the frame assembly and is slidably connected to the frame assembly; A handle is connected to the pull rod; wherein the fall protection component exists in two states: in the first state, the handle is lifted, the pull rod, the connecting rod, and the rotating rod are pulled, and the opening is open; in the second state, under the action of gravity, the handle is not subject to external force, the rotating rod hangs down naturally, and the opening is closed.

[0013] Furthermore, the tie rods are provided in four pairs, with each pair of tie rods having only a connecting rod and a rotating rod at the end.

[0014] Furthermore, the tie rod extends longitudinally through the lower step of the frame assembly, and both the rotating rod and the connecting rod are located on the lower step; a limiting block is provided on the tie rod to limit the rotation angle of the rotating rod, so that the rotation angle range of the rotating rod is no greater than 90°.

[0015] Furthermore, the power grid sealing traction device also includes a first locking member, which is disposed at one end of the frame assembly. The first locking member is provided with a locking ring, which is used to engage with the locking component of the locking device.

[0016] The power grid sealing traction device provided in this embodiment of the invention has the advantage that the traction component rolls and pulls the conductor above, while the top wire component presses against the conductor below. This dual-action structure of upper traction and lower pressing effectively increases the positive pressure between the first roller and the conductor, thereby maintaining stable friction even under complex working conditions such as ice or rust on the conductor surface, and improving the smoothness of the traction action. Attached Figure Description

[0017] Figure 1 A perspective view of the power grid sealing traction device provided in an embodiment of the present invention; Figure 2 This is a side view of the power grid sealing traction device provided in an embodiment of the present invention; Figure 3 for Figure 2 A sectional view of section AA; Figure 4 This is a bottom view of the power grid sealing traction device provided in an embodiment of the present invention; Figure 5 A perspective view of the power grid sealing traction device (hidden housing) provided in an embodiment of the present invention; Figure 6 A side view of the power grid sealing traction device (hidden housing) provided in an embodiment of the present invention; Figure 7 for Figure 6 A sectional view of section BB; Figure 8 This is an assembly diagram of the traction device and locking device provided in an embodiment of the present invention; Figure 9 A partial view of the locking component of the locking device provided in an embodiment of the present invention; 10. Frame assembly; 11. Rack; 12. Cabinet; 13. Shell; 14. Antenna; 20. Traction assembly; 21. First roller; 22. First drive unit; 30. Top line assembly; 31. Top rod; 32. Second roller; 33. Second drive device; 40. Fall arrestor assembly; 41. Rotating rod; 42. Connecting rod; 43. Pull rod; 44. Handle; 50. Locking assembly; 51. First locking element; 52. Second locking element; 53. Locking push rod; 54. Limit switch; 60. Wire; 100. Traction device; 200. Locking device. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0020] In one embodiment, such as Figure 1-5 As shown, a power grid shunting traction device is proposed. The power grid shunting traction device includes: The frame assembly 10 is provided with an opening for inserting the wire 60; The traction assembly 20 includes a plurality of first rollers 21 and a first drive device 22; the first rollers 21 and the first drive device 22 are disposed inside the frame assembly 10 and located at the top of the opening; the first rollers 21 are used to support the wire 60 and roll relative to the wire 60; the first drive device 22 is used to drive the first rollers 21 to rotate. The top wire assembly 30 includes a top rod 31, a second roller 32, and a second drive device 33. The second drive device 33 is disposed inside the frame assembly 10, and its output end is connected to the top rod 31. The second roller 32 is disposed at the end of the top rod 31. The second drive device 33 is used to drive the second roller 32 to press against the wire 60.

[0021] In this embodiment, as Figure 5As shown, the first roller 21 in the traction assembly 20 is located at the top of the opening of the frame assembly 10, supporting the conductor 60 and generating relative rolling under the drive of the first drive device 22, providing the basic power for the device to move along the conductor 60. The top wire assembly 30 drives the top rod 31 through the second drive device 33, causing the second roller 32 to press against the conductor 60 from another direction, forming a clamping or pressing action on the conductor 60 with the first roller 21. This dual-action structure of upper traction and lower pressing effectively increases the normal pressure between the first roller 21 and the conductor 60, thereby maintaining stable friction even under complex working conditions such as ice or rust on the surface of the conductor 60, and improving the smoothness of the traction action.

[0022] Specifically, such as Figure 3 and 5 As shown, the frame assembly 10 is the supporting structure of the entire device. It has an opening inside for mounting the device onto the guide wire 60. This opening is typically located at the bottom of the frame assembly 10, facilitating the insertion of the guide wire 60 into the device from below. The traction assembly 20 is the core power unit that enables the device to move along the guide wire 60. It includes two first rollers 21 and two first drive devices 22. These first rollers 21 and first drive devices 22 are all located inside the frame assembly 10, at the top of the opening. When the guide wire 60 enters the frame assembly 10 through the opening, the first rollers 21 support the guide wire 60. The first rollers 21 contact the guide wire 60 and, driven by the first drive devices 22, roll relative to the guide wire 60, thereby moving the entire device along the guide wire 60. The first drive devices 22 are typically motors, which transmit power to each first roller 21 through a transmission mechanism, ensuring that multiple rollers rotate synchronously and providing a smooth traction force for the device. The top wire assembly 30 is a key structure for enhancing the stability of the device's movement. It includes four top rods 31, four second rollers 32, and four second drive devices 33. The second drive devices 33 are also fixedly installed inside the frame assembly 10. Their output ends are connected to one end of the top rods 31, and the other end of the top rods 31 is equipped with the second rollers 32. When the second drive devices 33 are working, they drive the top rods 31 to extend or retract, thereby moving the second rollers 32. After the device is connected to the line, the second drive devices 33 drive the top rods 31 to extend, causing the second rollers 32 to press against the wire 60 from below, forming a clamping and tightening effect on the wire 60 together with the first roller 21 located on top of the wire 60. This structural design allows the traction device to move on the conductor 60 not only to rely on the support and drive of the first roller 21, but also to apply pressure from another direction through the top wire assembly 30. This increases the positive pressure between the first roller 21 and the conductor 60, which both holds the conductor 60 in place to prevent the device from tipping over and increases the friction of movement. At the same time, it avoids damage to the insulation layer of the conductor 60. No additional top wire auxiliary equipment is needed, and the structure is more compact.

[0023] In another specific embodiment, such as Figure 3 As shown, the cooperation between the traction device and the guide wire 60 is further optimized. A V-shaped groove for accommodating the guide wire 60 is provided on the outer circumference of the first roller 21. The V-shaped groove has a V-shaped cross-section, which can accommodate guide wires 60 of different diameters and automatically center the guide wire 60, ensuring that the guide wire 60 always maintains good contact with the roller. The top line assembly 30 is inclinedly arranged inside the frame assembly 10, and its inclination angle matches the slope angle of the V-shaped groove of the first roller 21. At least two sets of top line assemblies 30 are provided. These two sets of top line assemblies 30 abut the guide wire 60 corresponding to the same first roller 21 from two different directions, and the axis of the top rod 31 of each set of top line assemblies 30 is perpendicular to the slope of the V-shaped groove. The top line assemblies 30 act simultaneously from two directions, which is equivalent to hugging the guide wire 60 from both sides, forming a stable triangular force structure, making the positioning of the guide wire 60 within the V-shaped groove more precise and secure, and ensuring the stability of the movement.

[0024] Based on the above embodiments, the second roller 32 is an insulated pulley with a surface made of silicone rubber. The top rod 31 is placed inside the frame assembly 10 and can extend forward along a preset track. Its front end is equipped with an insulated pulley with a surface made of silicone rubber with a high coefficient of friction. This not only stably holds the wire but also increases friction to prevent the device from sliding, improving positioning stability while avoiding damage to the wire insulation layer.

[0025] In another specific embodiment, such as Figure 3 and 5 As shown, the structure of the frame assembly 10 is designed in detail. The frame assembly 10 includes: The frame 11 includes a lower step and an upper step. The lower step consists of two parts and forms a triangular structure with the upper step. The traction assembly 20 is disposed on the upper step. Box 12 is disposed on both sides of the lower step, and the opening is located between two opposite boxes 12; The outer casing 13 covers the frame 11, the housing 12, the traction assembly 20, and the top wire assembly 30.

[0026] In this specific embodiment, such as Figure 3 and 5As shown, the frame assembly 10 includes a frame 11, a housing 12, and a shell 13. The frame 11 is the main load-bearing structure, designed with a special configuration featuring a lower step and an upper step. The lower step is not a single unit but comprises two parts, which, together with the upper step, form a triangular structure. The main components of the traction assembly 20 are concentrated on the upper step, facilitating the contact of the first roller 21 with the conductor 60 from above. The housing 12 is located on both sides of the lower step, with its opening positioned precisely between the two opposing housings 12. This triangular frame 11 structure is compact, making full use of space and resulting in a more rational weight distribution, ensuring the balance of the device on the conductor 60. The outer shell 13 covers the entire frame 11, housing 12, traction assembly 20 and top line assembly 30, forming a semi-enclosed protective shell. The outer shell 13 is made of 304 stainless steel and has an IP65 protection rating. The inner side is equipped with a waterproof sealing ring, which can effectively resist outdoor rain and dust, and meet the weather resistance requirements for long-term outdoor use.

[0027] Based on the aforementioned frame component 10 structure, the specific installation and driving method of the traction component 20 are further defined. For example... Figure 5 As shown, the first roller 21 and the first drive device 22 are mounted on the same plane, located on the upper step. The first drive device 22 is a motor, which drives the first roller 21 to rotate via a belt drive. This coplanar design results in a short and direct transmission path, improving the integration of the device and making the structure more compact. Specifically, the first drive device 22 is a motor, which drives the first roller 21 to rotate via a belt drive. By adjusting the transmission ratio of the belt drive, the output speed of the motor can be easily matched with the required travel speed of the first roller 21 to achieve the best traction effect.

[0028] Based on the frame assembly 10 structure described in the above embodiment, a control module for controlling the traction assembly 20 and the top wire assembly 30 is installed inside the housing 12. This control module may include electronic components such as a microcontroller, motor driver, and power management module, responsible for receiving commands, processing data, and driving the first drive device 22 and the second drive device 33. To facilitate the installation and maintenance of the internal control module, an openable door is provided on the outside of the housing 12. The door is connected to the outer shell 13 via hinges and has a latch on its surface. Once opened, the internal battery and control circuit board can be directly installed and maintained, making operation convenient. More importantly, an antenna 14 is also installed on the door. This antenna 14 receives external wireless signals and transmits the received signals to the control module inside the housing 12. Through this wireless communication method, operators can control the traction device from a safe area away from high-voltage electric fields, realizing remote control of the traction device and improving the convenience and safety of operations.

[0029] In another specific embodiment, such as Figure 3 , 6 As shown in Figure 7, a fall arrestor 40 is also provided. The power grid traction device further includes the fall arrestor 40, which comprises: Rotating rod 41, one end of which is rotatably connected to the frame assembly 10, is located at the opening; Link 42 is connected at one end to the rotating rod 41 and at the other end to the pull rod 43; Tie rod 43 extends longitudinally through the frame assembly 10 and is slidably connected to the frame assembly 10; The handle 44 is connected to the pull rod 43; the anti-fall component 40 has two states: in the first state, the handle 44 is lifted, the pull rod 43, the connecting rod 42 and the rotating rod 41 are pulled, and the opening is opened; in the second state, under the action of gravity, the handle 44 is not subject to external force, the rotating rod 41 hangs down naturally, and the opening is closed.

[0030] In this specific embodiment, such as Figure 3 and 7As shown, the fall arrestor 40 is a purely mechanical safety interlocking mechanism, including a rotating rod 41, a connecting rod 42, a pull rod 43, and a handle 44. One end of the rotating rod 41 is rotatably connected to the frame assembly 10 and is located at the edge of the opening, allowing it to open or close like a gate. The pull rod 43 extends longitudinally through the lower step of the frame assembly 10, and both the rotating rod 41 and the connecting rod 42 are located on this lower step. A limiting block is provided on the pull rod 43 to limit the rotation angle of the rotating rod 41, ensuring that the rotation angle range of the rotating rod 41 does not exceed 90°. The rotation range of the rotating rod 41 is limited, with a downward rotation limit of 90°, parallel to the horizontal direction. This design prevents falls during downward rotation. One end of the connecting rod 42 is connected to the rotating rod 41, and the other end is connected to the pull rod 43. The pull rod 43 extends longitudinally through the frame assembly 10 and is slidably connected to it, allowing it to move up and down. Handle 44 is connected to the top or end of lever 43 for the operator to grip. The fall arrestor 40 has two stable states: In the first state, when the operator lifts handle 44, handle 44 moves lever 43 upwards, lever 43 then pulls connecting rod 42, which in turn pulls rotating rod 41 upwards around its pivot point, causing rotating rod 41 to leave the opening position. At this time, the opening is opened, allowing the wire 60 to enter or exit. In the second state, when the operator releases handle 44, the linkage mechanism consisting of handle 44, lever 43, connecting rod 42, and rotating rod 41 naturally droops under gravity. At this time, rotating rod 41, relying on its own weight and the weight of connecting rod 42, rotates downwards around its pivot point, returning to the opening and closing it. In other words, as long as the operator does not actively lift handle 44, rotating rod 41 remains in the closed opening state, forming a physical barrier and effectively preventing the wire 60 from accidentally slipping out.

[0031] Based on the aforementioned fall arrestor assembly 40, four pull rods 43 are provided, arranged in pairs. Each pair of pull rods 43 ends with only a connecting rod 42 and a rotating rod 41. That is, there are two rotating rods 41 respectively located on either side or front and back of the opening, controlled by two independent sets of pull rods 43 and connecting rods 42. This double-rotating rod 41 design allows the opening to be locked simultaneously from both sides. Even if the mechanism on one side fails, the other side can still provide fall arrest, forming redundant protection. Furthermore, each pair only has one connecting rod 42 and one rotating rod 41 to avoid mechanical interference when the rotating rods 41 in the same pair rotate downwards.

[0032] In another specific embodiment, such as Figure 8 and 9 The diagram shows the docking structure of the power grid sealing traction device 100 and the power grid sealing locking device 200. The power grid sealing traction device 100 also includes a first locking member 51, which is disposed at one end of the frame assembly 10, and a locking ring is provided on the first locking member 51. The first locking member 51 of the power grid sealing traction device 100 is used to engage the locking component 50 of the locking device 200, the locking component 50 comprising: The second locking member 52 is provided with a groove for engaging with the first locking member 51 of the power grid sealing traction device 100; A locking push rod 53 is provided in the second locking member 52 and is used to pass through the locking ring; Limit switch 54 is disposed inside the groove of the second locking member 52, and is used to determine whether the first locking member 51 is engaged with the second locking member 52 by touch; if so, the locking push rod 53 is activated.

[0033] In this specific embodiment, the traction device 100 only has a first locking member 51, but the locking device 200 has both a first locking member 51 and a second locking member 52, as well as a locking push rod 53 and a limit switch 54. The first locking member 51 is used to engage with the second locking member 52, so that one traction device 100 can drive a series of mutually locked locking devices 200. Specifically, the first locking member 51 is provided with a locking ring, which is a structure with a specific shape, such as a circular ring or a U-shaped ring, for cooperating with the locking push rod 53 on the locking device 200. The locking device 200, as an independent device used in conjunction with the traction device 100, has a dedicated locking component 50 at its front end. The locking component 50 specifically includes the first locking member 51, the second locking member 52, the locking push rod 53, and the limit switch 54. The first locking member 51 is located at the rear end of the locking device 200, and the second locking member 52 is located at the front end of the locking device 200. The direction of the connection between the two is the direction of extension of the conductor 60. The second locking member 52 has a groove that matches the shape of the first locking member 51, used to accommodate and initially position the first locking member 51 of the traction device 100. A locking push rod 53 is movably mounted on the second locking member 52, its position corresponding to the locking ring on the first locking member 51. A limit switch 54 is installed inside the groove of the second locking member 52 and is a sensitive triggering element. When the traction device 100 approaches the locking device 200, the first locking member 51 gradually enters the groove of the second locking member 52. When the first locking member 51 is fully in place and contacts the bottom or side wall of the groove, it will trigger the limit switch 54 hidden in the groove, achieving rapid docking of the first locking member 51 and the second locking member 52. This connection method shortens the time spent working at heights and reduces the labor intensity and fall risk for operators.

[0034] Working principle: When the device is put into operation, the operator lifts handle 44, which drives the rotating rod 41 to rotate via pull rod 43 and connecting rod 42, opening the opening at the bottom of the frame assembly 10 and allowing the wire 60 to be inserted into the device. Then, the operator releases handle 44, and the rotating rod 41 naturally droops under gravity, closing the opening and preventing accidental wire detachment. The top wire assembly 30 is then activated. The second drive device 33 in the top wire assembly 30 drives the top rod 31 to extend, causing the second roller 32 to tilt and press against the wire 60 from below. After the top wire assembly 30 has tightened, the traction assembly 20 begins its movement. The first drive device 22 is activated, driving the first roller 21 to rotate via belt drive. When the device needs to dock with the locking device 200, the first locking member 51 enters the groove of the second locking member 52 of the locking device 200 and touches the limit switch 54, triggering the locking push rod 53 to automatically pass through the locking ring, achieving a quick and reliable connection.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power grid sealing traction device, characterized in that, The power grid traction device includes: The frame assembly has openings for inserting wires; The traction assembly includes a plurality of first rollers and a first drive device; the first rollers and the first drive device are disposed within the frame assembly, located at the top of the opening, the first rollers are used to support the wire and roll relative to the wire, and the first drive device is used to drive the first rollers to rotate. The top wire assembly includes a top rod, a second roller, and a second drive device; the second drive device is disposed within the frame assembly, its output end is connected to the top rod, the end of the top rod is provided with the second roller, and the second drive device is used to drive the second roller to press against the wire.

2. The power grid sealing traction device according to claim 1, characterized in that, The first roller is provided with a V-shaped groove for accommodating the wire. The top wire assembly is inclinedly disposed inside the frame assembly. At least two sets of the top wire assembly are provided, which abut against the wire of the same first roller from two directions respectively, and the top rod is perpendicular to the inclined surface of the V-shaped groove.

3. The power grid sealing traction device according to claim 2, characterized in that, The second roller is an insulated pulley with a surface made of silicone rubber.

4. The power grid sealing traction device according to claim 1, characterized in that, The frame assembly includes: The frame includes a lower step and an upper step. The lower step consists of two parts and forms a triangular structure with the upper step. The traction assembly is disposed on the upper step. The enclosure is located on both sides of the lower step, and the opening is located between the two opposing enclosures; The outer casing covers the frame, the housing, the traction assembly, and the top wire assembly.

5. The power grid sealing traction device according to claim 4, characterized in that, The first roller and the first drive device are mounted on the same plane and located on the upper step. The first drive device is a motor that drives the first roller to rotate via a belt conveyor.

6. The power grid sealing traction device according to claim 4, characterized in that, The housing contains a control module for controlling the traction assembly and the top wire assembly. The housing has a door on the outside, and an antenna is mounted on the door to transmit received signals to the control module.

7. The power grid sealing traction device according to claim 1, characterized in that, The power grid sealing traction device also includes a fall protection component, which comprises: A rotating rod, one end of which is rotatably connected to the frame assembly, is located at the opening; The connecting rod is connected to the rotating rod at one end and to the pull rod at the other end. A tie rod extends longitudinally through the frame assembly and is slidably connected to the frame assembly; A handle is connected to the pull rod; wherein the fall protection component exists in two states: in the first state, the handle is lifted, the pull rod, the connecting rod, and the rotating rod are pulled, and the opening is open; in the second state, under the action of gravity, the handle is not subject to external force, the rotating rod hangs down naturally, and the opening is closed.

8. The power grid sealing traction device according to claim 7, characterized in that, The tie rods are arranged in four pairs, with each pair of tie rods having only a connecting rod and a rotating rod at the end.

9. The power grid sealing traction device according to claim 7, characterized in that, The tie rod extends longitudinally through the lower step of the frame assembly, and both the rotating rod and the connecting rod are located on the lower step. A limiting block is provided on the tie rod to limit the rotation angle of the rotating rod, so that the rotation angle range of the rotating rod is no greater than 90°.

10. The power grid sealing traction device according to claim 1, characterized in that, The power grid sealing traction device also includes a first locking member, which is disposed at one end of the frame assembly. The first locking member is provided with a locking ring, which is used to engage with the locking component of the locking device.

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