Overhead ground wire auxiliary incoming and outgoing line maintenance platform

Abstract

The invention relates to an overhead ground wire auxiliary incoming and outgoing line maintenance platform which comprises an outgoing line horizontal ladder and an insulating rope ladder head, the outgoing line horizontal ladder is placed on a tower cross arm, an overhead ground wire is arranged at the upper end of the tower cross arm, the insulating rope ladder head is in lap joint with the overhead ground wire, and a clamping seat is arranged at the left end of the outgoing line horizontal ladder. The clamping seat is clamped with a tower cross arm, the right end of the outgoing line horizontal ladder is provided with an insertion mechanism, the outer side of the insulating rope ladder head is provided with a frame, the upper end of the frame is provided with a hook, the hook is internally provided with a pulley, the pulley is placed on the upper side of an overhead ground wire, and the bottom of the frame is provided with a hanging ring. The inserting mechanism is clamped with the lifting ring; according to the invention, the problem that maintainers are difficult to go in and out of the overhead ground wire is effectively solved, the safety of overhead ground wire maintenance operation is improved, operators can go in and out of the overhead ground wire more stably and safely, and defects on the overhead ground wire are smoothly eliminated.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power construction equipment, and in particular relates to an overhead ground wire auxiliary inlet and outlet maintenance platform. Background Art

[0002] When repairing the ground wire anti-vibration hammer and removing foreign objects from the overhead ground wire, it is crucial to ensure the safety and efficiency of the operation. Entering and exiting the overhead ground wire requires very high practical skills, which not only easily brings safety hazards, but also may cause operation interruptions and affect work efficiency. When working with power, ensure that the operator is in an equipotential state with the overhead ground wire during the operation to avoid the risk of electric shock caused by the potential difference. Through the reasonable design and connection of auxiliary tools, the operator can achieve a safe transition from the ground potential to the equipotential position on the overhead ground wire. At present, there is relatively little research on this specific issue in the maintenance work of entering and exiting the overhead ground wire at home and abroad. Existing maintenance tools and methods have certain limitations in dealing with safety hazards in entering and exiting the overhead ground wire. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to solve the problems raised in the above technical background.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an overhead ground wire auxiliary inlet and outlet maintenance platform, which includes an outlet ladder and an insulating soft ladder head, the outlet ladder is placed on the pole tower cross arm, the upper end of the pole tower cross arm is provided with an overhead ground wire, the insulating soft ladder head is overlapped with the overhead ground wire, the left end of the outlet ladder is provided with a clamp seat, the clamp seat is clamped with the pole tower cross arm, the right end of the outlet ladder is provided with a plug-in mechanism, a frame is provided on the outside of the insulating soft ladder head, a hook is provided on the upper end of the frame, a pulley is provided inside the hook, the pulley is placed on the upper side of the overhead ground wire, a lifting ring is provided at the bottom of the frame, and the plug-in mechanism and the lifting ring are clamped with each other.

[0005] The outlet ladder comprises a fixed section and a movable section, wherein the movable section is arranged above the fixed section through a movable bracket, and guardrails are arranged on the sides of the fixed section and the movable section.

[0006] Cover plates are arranged on the upper sides of the fixed section and the movable section, and the cover plates are made of epoxy plates.

[0007] A locking plate is arranged inside the hook, and the locking plate is connected to the hook through a locking tongue. A locker is arranged in the middle of the frame, and a brake wire is arranged between the locker and the locking plate.

[0008] The clamp seat includes a positioning plate and a clamping plate. A positioning screw is arranged inside the positioning plate through a bearing. A positioning handle is arranged at the outer end of the positioning screw. The clamping plate is screwed to the positioning screw through a sleeve. A hinge shaft is arranged at one end of the outlet ladder close to the clamp seat. The clamp seat is hinged to the hinge shaft through a hinge ring seat.

[0009] The positioning plate and the clamping plate are both in an "L" shape.

[0010] The plug-in mechanism includes an expansion seat and a fixed head, a shell is arranged on the outside of the expansion seat, the left end of the shell is fixedly connected to the fixed head, the fixed head is fixedly connected to the outlet ladder, an expansion screw is arranged inside the fixed head, the expansion screw passes through the shell, a movable sleeve is threadedly arranged on the outside of the expansion screw, hinge seats are arranged on the surfaces of the expansion seat and the movable sleeve, an expansion rod is arranged between the two hinge seats, and a central axis is arranged in the middle of the expansion rod.

[0011] The shell surface is provided with a groove, and the expansion rod can extend out of the shell through the groove.

[0012] An expansion handle is arranged at one end of the expansion screw away from the fixed head, and the surface of the expansion handle is provided with anti-skid patterns.

[0013] The present invention provides an overhead ground wire auxiliary inlet and outlet maintenance platform, which has the following beneficial effects: through the combination of the outlet ladder and the insulating soft ladder head, maintenance personnel can safely and stably approach the overhead ground wire for operation. The design of the insulating soft ladder head ensures electrical insulation when contacting the overhead ground wire, preventing the risk of electric shock. At the same time, the guardrail and cover plate on the outlet ladder provide additional safety protection for maintenance personnel.

[0014] The design of the platform takes into account the convenience in actual operation. The clamping seat is hinged to the hinge shaft through the hinge ring seat, which can be adjusted according to the specific shape and position of the tower cross arm to achieve a stable clamping connection, and it is also helpful for the placement and recovery of the outlet ladder. The design of the plug-in mechanism allows the insulated soft ladder head and the outlet ladder to be quickly and easily connected and disassembled, improving the maintenance efficiency.

[0015] The access ladder includes a fixed section and a movable section. The movable section is set above the fixed section through a movable bracket. This design can adjust the length of the platform according to actual needs, increasing the applicability of the platform. At the same time, the connection structure between the movable bracket and the fixed section and the movable section ensures the overall stability of the platform to prevent shaking or collapse during operation.

[0016] The design of key components such as the frame, hook, and locking plate fully considers strength and durability. The hook is equipped with a locking plate and a locker inside, which is connected by a brake wire to ensure that the hook will not fall off accidentally when it is stressed.

[0017] The design of the present invention is concise and clear, and the connection and disassembly between the various components are relatively simple, which is convenient for maintenance personnel to perform maintenance and upkeep in daily use. The present invention aims to develop a matching overhead ground wire auxiliary in-and-out line maintenance platform when using the drone + flying man operation method to carry out overhead ground wire maintenance operations, effectively solve the problem of maintenance personnel having difficulty in entering and exiting the overhead ground wire, improve the safety of overhead ground wire maintenance operations, enable operators to enter and exit the overhead ground wire more stably and safely, smoothly eliminate defects on the overhead ground wire, ensure the normal operation of the transmission line, and thus improve the reliability of the entire transmission line system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is an overall structural diagram of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0019] Figure 2 The present invention provides a top view of an outlet ladder of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0020] Figure 3 The invention discloses a side view of an insulating soft ladder head of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0021] Figure 4 The present invention is a structural diagram of a clamping seat of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0022] Figure 5 The present invention is a cross-sectional view of a clamping seat of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0023] Figure 6 The present invention is a front view of a plug-in mechanism of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0024] Figure 7 The present invention is a structural diagram of the normal state of the plug-in mechanism of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0025] Figure 8 The present invention is a structural diagram of the use status of the plug-in mechanism of an overhead ground wire auxiliary inlet and outlet maintenance platform.

[0026] In the figure: 1, tower cross arm 2, overhead ground wire 3, outlet ladder 4, insulating soft ladder head 5, clamp seat 6, plug-in mechanism 7, fixed section 8, movable section 9, movable bracket 10, cover plate 11, frame 12, hook 13, pulley 14, lifting ring 15, locking plate 16, locking tongue 17, lock 18, gate line 19, positioning plate 20, clamping plate 21, positioning screw 22, sleeve 23, positioning handle 24, hinge shaft 25, hinge ring seat 26, guardrail 27, expansion seat 28, shell 29, fixed head 30, groove 31, expansion screw 32, movable sleeve 33, hinge seat 34, expansion handle 35, expansion rod 36, center axis. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Example

[0028] See also Figures 1 to 3 A kind of overhead ground wire auxiliary in-and-out line maintenance platform, it includes an outgoing line ladder 3 and an insulating soft ladder head 4, the outgoing line ladder 3 is placed on the pole tower cross arm 1, the upper end of the pole tower cross arm 1 is provided with an overhead ground wire 2, the insulating soft ladder head 4 is overlapped with the overhead ground wire 2, the left end of the outgoing line ladder 3 is provided with a clamp seat 5, the clamp seat 5 is clamped with the pole tower cross arm 1, the right end of the outgoing line ladder 3 is provided with a plug-in mechanism 6, the outer side of the insulating soft ladder head 4 is provided with a frame 11, the upper end of the frame 11 is provided with a hook 12, the inside of the hook 12 is provided with a pulley 13, the pulley 13 is placed on the upper side of the overhead ground wire 2, the bottom of the frame 11 is provided with a hanging ring 14, the plug-in mechanism 6 and the hanging ring 14 are clamped with each other.

[0029] The outlet ladder 3 includes a fixed section 7 and a movable section 8. The movable section 8 is arranged above the fixed section 7 through a movable bracket 9. Guardrails 26 are arranged on the sides of the fixed section 7 and the movable section 8.

[0030] A cover plate 10 is disposed on the upper side of the fixed section 7 and the movable section 8 , and the cover plate 10 is made of epoxy board.

[0031] A locking piece 15 is disposed inside the hook 12 , and the locking piece 15 is connected to the hook 12 via a locking tongue 16 . A locker 17 is disposed in the middle of the frame 11 , and a brake wire 18 is disposed between the locker 17 and the locking piece 15 .

[0032] When the device is in use, the frame 11 of the insulating ladder head 4 is overlapped on the overhead ground wire 2, and the hook 12 is hung on the upper side of the overhead ground wire 2 to ensure that the pulley 13 can support the weight of the entire frame 11 and that the pulley 13 can slide smoothly on the overhead ground wire 2. The hook 12 is locked by the locking plate 15 and the locking tongue 16 to prevent it from accidentally falling off. The lock 17 is connected to the locking plate 15 by the brake wire 18 to ensure that it can be quickly unlocked when needed. The lifting ring 14 is connected to the right end of the outlet ladder 3 by the plug-in mechanism 6 to ensure that the connection is firm and reliable. The fixed section 7 of the outlet ladder 3 is placed on the tower cross arm 1 through the clamp seat 5 to ensure that it is stable and not easy to slide. The height and angle of the movable section 8 are adjusted as needed to form a suitable slope with the fixed section 7 to facilitate the walking of maintenance personnel. The maintenance personnel can walk along the outlet ladder 3 to the insulating ladder head 4, and then climb along the insulating ladder head 4 to the overhead ground wire 2 for maintenance work. This device has shown significant advantages in improving the safety, convenience, adaptability, stability and reliability of maintenance operations. Example

[0033] See also Figures 1 to 5 A kind of overhead ground wire auxiliary in-and-out line maintenance platform, it includes an outgoing line ladder 3 and an insulating soft ladder head 4, the outgoing line ladder 3 is placed on the pole tower cross arm 1, the upper end of the pole tower cross arm 1 is provided with an overhead ground wire 2, the insulating soft ladder head 4 is overlapped with the overhead ground wire 2, the left end of the outgoing line ladder 3 is provided with a clamp seat 5, the clamp seat 5 is clamped with the pole tower cross arm 1, the right end of the outgoing line ladder 3 is provided with a plug-in mechanism 6, the outer side of the insulating soft ladder head 4 is provided with a frame 11, the upper end of the frame 11 is provided with a hook 12, the inside of the hook 12 is provided with a pulley 13, the pulley 13 is placed on the upper side of the overhead ground wire 2, the bottom of the frame 11 is provided with a hanging ring 14, the plug-in mechanism 6 and the hanging ring 14 are clamped with each other.

[0034] Furthermore, the outlet ladder 3 includes a fixed section 7 and a movable section 8, the movable section 8 is arranged above the fixed section 7 through a movable bracket 9, and guardrails 26 are arranged on the sides of the fixed section 7 and the movable section 8. When not in use, the guardrail 26 can be laid down toward the axis of the outlet ladder 3 and be horizontal with the outlet ladder 3, so as to facilitate the use and placement of the outlet ladder 3.

[0035] Furthermore, a cover plate 10 is provided on the upper side of the fixed section 7 and the movable section 8, and the cover plate 10 is made of epoxy board. The outlet ladder 3 and the cover plate 10 made of epoxy board have good insulation performance and corrosion resistance, which prolongs the service life of the device.

[0036] Furthermore, a locking piece 15 is provided inside the hook 12, and the locking piece 15 is connected to the hook 12 through a locking tongue 16. A locker 17 is provided in the middle of the frame 11, and a brake wire 18 is provided between the locker 17 and the locking piece 15. The locking piece 15 can limit the overhead ground wire 2 to prevent it from being separated during use, and the locker 17 can drive the locking piece 15 to move through the brake wire 18, so as to facilitate the installation and removal of the insulating soft ladder head 4.

[0037] Furthermore, the clamp seat 5 includes a positioning plate 19 and a clamping plate 20, a positioning screw 21 is arranged inside the positioning plate 19 through a bearing, a positioning handle 23 is arranged at the outer end of the positioning screw 21, the clamping plate 20 is screwed to the positioning screw 21 through a sleeve 22, and a hinge shaft 24 is arranged at one end of the outlet ladder 3 close to the clamp seat 5, and the clamp seat 5 is hinged to the hinge shaft 24 through a hinge ring seat 25.

[0038] Furthermore, the positioning plate 19 and the clamping plate 20 are both in an L-shape. The positioning plate 19 and the clamping plate 20 in this shape can be tightly connected to the tower cross arm 1.

[0039] When the device is in use, the frame 11 of the insulating ladder head 4 is overlapped on the overhead ground wire 2, and the hook 12 is hung on the upper side of the overhead ground wire 2 to ensure that the pulley 13 can support the weight of the entire frame 11 and that the pulley 13 can slide smoothly on the overhead ground wire 2. The hook 12 is locked in place by the locking plate 15 and the locking tongue 16 to prevent it from accidentally falling off. The lock 17 is connected to the locking plate 15 by the brake wire 18 to ensure that it can be quickly unlocked when needed. The lifting ring 14 is connected to the right end of the outlet ladder 3 by the plug-in mechanism 6 to ensure that the connection is firm and reliable. The fixed section 7 of the outlet ladder 3 is placed on the tower cross arm 1 through the clamp seat 5 to ensure that it is stable and not easy to slide. The height and angle of the movable section 8 are adjusted as needed to form a suitable slope with the fixed section 7 to facilitate the walking of maintenance personnel. The maintenance personnel can walk along the outlet ladder 3 to the insulating ladder head 4, and then climb along the insulating ladder head 4 to the overhead ground wire 2 for maintenance work. Furthermore, when the clamp seat 5 is in use, the shape and size of the pole tower crossarm 1 are observed to determine the installation position and direction of the clamp seat 5. The positioning plate 19 is placed on the pole tower crossarm 1 to ensure that one side of its "L" shape fits tightly with the pole tower crossarm 1. The position of the positioning plate 19 is adjusted to correspond to the hinge shaft 24 of the outlet ladder 3. The positioning handle 23 is rotated to drive the clamping plate 20 to move on the positioning screw 21 through the positioning screw 21 to ensure that one side of the "L" shape of the clamping plate 20 fits tightly with the other side of the pole tower crossarm 1 to form an effective clamping force. The hinge ring seat 25 is matched with the hinge shaft 24 to realize the hinge connection between the clamp seat 5 and the outlet ladder 3. The present device has shown significant advantages in improving the safety, convenience, adaptability, stability and reliability of maintenance operations. Example

[0040] See also Figures 1 to 8 A kind of overhead ground wire auxiliary in-and-out line maintenance platform, it includes an outgoing line ladder 3 and an insulating soft ladder head 4, the outgoing line ladder 3 is placed on the pole tower cross arm 1, the upper end of the pole tower cross arm 1 is provided with an overhead ground wire 2, the insulating soft ladder head 4 is overlapped with the overhead ground wire 2, the left end of the outgoing line ladder 3 is provided with a clamp seat 5, the clamp seat 5 is clamped with the pole tower cross arm 1, the right end of the outgoing line ladder 3 is provided with a plug-in mechanism 6, the outer side of the insulating soft ladder head 4 is provided with a frame 11, the upper end of the frame 11 is provided with a hook 12, the inside of the hook 12 is provided with a pulley 13, the pulley 13 is placed on the upper side of the overhead ground wire 2, the bottom of the frame 11 is provided with a hanging ring 14, the plug-in mechanism 6 and the hanging ring 14 are clamped with each other.

[0041] Furthermore, the outlet ladder 3 includes a fixed section 7 and a movable section 8, the movable section 8 is arranged above the fixed section 7 through a movable bracket 9, and guardrails 26 are arranged on the sides of the fixed section 7 and the movable section 8. When not in use, the guardrail 26 can be laid down toward the axis of the outlet ladder 3 and be horizontal with the outlet ladder 3, so as to facilitate the use and placement of the outlet ladder 3.

[0042] Furthermore, a cover plate 10 is provided on the upper side of the fixed section 7 and the movable section 8, and the cover plate 10 is made of epoxy board. The outlet ladder 3 and the cover plate 10 made of epoxy board have good insulation performance and corrosion resistance, which prolongs the service life of the device.

[0043] Furthermore, a locking piece 15 is provided inside the hook 12, and the locking piece 15 is connected to the hook 12 through a locking tongue 16. A locker 17 is provided in the middle of the frame 11, and a brake wire 18 is provided between the locker 17 and the locking piece 15. The locking piece 15 can limit the overhead ground wire 2 to prevent it from being separated during use, and the locker 17 can drive the locking piece 15 to move through the brake wire 18, so as to facilitate the installation and removal of the insulating soft ladder head 4.

[0044] Furthermore, the clamp seat 5 includes a positioning plate 19 and a clamping plate 20, a positioning screw 21 is arranged inside the positioning plate 19 through a bearing, a positioning handle 23 is arranged at the outer end of the positioning screw 21, the clamping plate 20 is screwed to the positioning screw 21 through a sleeve 22, and a hinge shaft 24 is arranged at one end of the outlet ladder 3 close to the clamp seat 5, and the clamp seat 5 is hinged to the hinge shaft 24 through a hinge ring seat 25.

[0045] Furthermore, the positioning plate 19 and the clamping plate 20 are both in an L-shape. The positioning plate 19 and the clamping plate 20 in this shape can be tightly connected to the tower cross arm 1.

[0046] Furthermore, the plug-in mechanism 6 includes an expansion seat 27 and a fixed head 29, a shell 28 is arranged on the outside of the expansion seat 27, the left end of the shell 28 is fixedly connected to the fixed head 29, the fixed head 29 is fixedly connected to the outlet ladder 3, an expansion screw 31 is arranged inside the fixed head 29, the expansion screw 31 passes through the shell 28, a movable sleeve 32 is threadedly arranged on the outside of the expansion screw 31, hinge seats 33 are arranged on the surfaces of the expansion seat 27 and the movable sleeve 32, an expansion rod 34 is arranged between the two hinge seats 33, and a central axis 36 is arranged in the middle of the expansion rod 34.

[0047] Furthermore, a groove 30 is provided on the surface of the shell 28 , and the expansion rod 34 can extend out of the shell 28 through the groove 30 .

[0048] Furthermore, an expansion handle 34 is provided at one end of the expansion screw 31 away from the fixed head 29, and an anti-slip pattern is provided on the surface of the expansion handle 34. The expansion handle 34 can drive the expansion screw 31 to rotate.

[0049] When the device is in use, the frame 11 of the insulating ladder head 4 is overlapped on the overhead ground wire 2, and the hook 12 is hung on the upper side of the overhead ground wire 2 to ensure that the pulley 13 can support the weight of the entire frame 11 and that the pulley 13 can slide smoothly on the overhead ground wire 2. The hook 12 is locked in place by the locking plate 15 and the locking tongue 16 to prevent it from accidentally falling off. The lock 17 is connected to the locking plate 15 by the brake wire 18 to ensure that it can be quickly unlocked when needed. The lifting ring 14 is connected to the right end of the outlet ladder 3 by the plug-in mechanism 6 to ensure that the connection is firm and reliable. The fixed section 7 of the outlet ladder 3 is placed on the tower cross arm 1 through the clamp seat 5 to ensure that it is stable and not easy to slide. The height and angle of the movable section 8 are adjusted as needed to form a suitable slope with the fixed section 7 to facilitate the walking of maintenance personnel. The maintenance personnel can walk along the outlet ladder 3 to the insulating ladder head 4, and then climb along the insulating ladder head 4 to the overhead ground wire 2 for maintenance work. Furthermore, when the plug-in mechanism 6 is in use, the connection position of the outlet ladder 3 and the insulating soft ladder head 4 is observed to determine the installation direction of the plug-in mechanism 6. The expansion seat 27 is passed through the ring 14 at the bottom of the insulating soft ladder head 4, so that the ring 14 is located in the middle of the shell 28. By rotating the expansion screw 31, the movable sleeve 32 moves on the expansion screw 31, thereby driving the expansion rod 35 to contract between the hinge seat 33. Under the action of the central axis 36, the expansion rod 35 is extended through the groove 30 on the surface of the shell 28 to ensure that the expansion rod 35 is firmly stuck in the ring 14 of the insulating soft ladder head 4. Under the action of the expansion rods 35 on both sides, the ring 14 can be firmly positioned between the expansion rods 35 to prevent detachment during use. The present device has shown significant advantages in improving the safety, convenience, adaptability, stability and reliability of maintenance operations.

Claims

1. An overhead ground wire auxiliary inlet and outlet maintenance platform, comprising an outlet ladder and an insulating soft ladder head, wherein the outlet ladder is placed on a tower cross arm, an overhead ground wire is arranged on the upper end of the tower cross arm, and the insulating soft ladder head is overlapped with the overhead ground wire, characterized in that: A clamping seat is provided at the left end of the outlet ladder, and the clamping seat is clamped with the cross arm of the pole tower. A plug-in mechanism is provided at the right end of the outlet ladder. A frame is provided on the outside of the insulating soft ladder head, a hook is provided on the upper end of the frame, a pulley is provided inside the hook, and the pulley is placed on the upper side of the overhead ground wire. A lifting ring is provided at the bottom of the frame, and the plug-in mechanism and the lifting ring are clamped with each other.

2. An overhead ground wire auxiliary inlet and outlet maintenance platform as claimed in claim 1, characterized in that: The outlet ladder comprises a fixed section and a movable section, wherein the movable section is arranged above the fixed section through a movable bracket, and guardrails are arranged on the sides of the fixed section and the movable section.

3. An overhead ground wire auxiliary inlet and outlet maintenance platform as claimed in claim 2, characterized in that: Cover plates are arranged on the upper sides of the fixed section and the movable section, and the cover plates are made of epoxy plates.

4. The overhead ground wire auxiliary inlet and outlet maintenance platform according to claim 1, characterized in that: A locking plate is arranged inside the hook, and the locking plate is connected to the hook through a locking tongue. A locker is arranged in the middle of the frame, and a brake wire is arranged between the locker and the locking plate.

5. The overhead ground wire auxiliary inlet and outlet maintenance platform according to claim 1, characterized in that: The clamp seat includes a positioning plate and a clamping plate. A positioning screw is arranged inside the positioning plate through a bearing. A positioning handle is arranged at the outer end of the positioning screw. The clamping plate is screwed to the positioning screw through a sleeve. A hinge shaft is arranged at one end of the outlet ladder close to the clamp seat. The clamp seat is hinged to the hinge shaft through a hinge ring seat.

6. An overhead ground wire auxiliary inlet and outlet maintenance platform as claimed in claim 5, characterized in that: The positioning plate and the clamping plate are both in an "L" shape.

7. An overhead ground wire auxiliary inlet and outlet maintenance platform as claimed in claim 1, characterized in that: The plug-in mechanism includes an expansion seat and a fixed head, a shell is arranged on the outside of the expansion seat, the left end of the shell is fixedly connected to the fixed head, the fixed head is fixedly connected to the outlet ladder, an expansion screw is arranged inside the fixed head, the expansion screw passes through the shell, a movable sleeve is threadedly arranged on the outside of the expansion screw, hinge seats are arranged on the surfaces of the expansion seat and the movable sleeve, an expansion rod is arranged between the two hinge seats, and a central axis is arranged in the middle of the expansion rod.

8. An overhead ground wire auxiliary inlet and outlet maintenance platform as claimed in claim 7, characterized in that: The shell surface is provided with a groove, and the expansion rod can extend out of the shell through the groove.

9. An overhead ground wire auxiliary inlet and outlet maintenance platform as claimed in claim 8, characterized in that: An expansion handle is arranged at one end of the expansion screw away from the fixed head, and the surface of the expansion handle is provided with anti-skid patterns.

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