Scene-adaptive non-inductive access tail end drainage device

By designing a scene-adapted insensitive access terminal drainage device, the clamp tube and transmission rod are used to realize the opening and closing movement of the clamping part, solving the problems of single type of access device and slow disassembly and assembly speed, and achieving low-voltage air conditioning The versatility of wires and low-voltage busbars is not powered off and fast access is improved, which improves the power recovery speed and power supply reliability.

CN119231203APending Publication Date: 2024-12-31GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Patent Information

Application Number
CN202411417621.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2024-12-31

AI Technical Summary

Technical Problem

The existing access devices have a single type and slow disassembly and assembly speed, which leads to troublesome installation during the temporary power supply guarantee of low-voltage power generation vehicles, affecting the power recovery speed, and the access methods in different scenarios are not consistent, affecting the power supply reliability.

Method used

A scene-adapted inductive access terminal drainage device is designed, including a clamp tube, a clamp head, a steering head, a transmission rod and a fastening block. The transmission rod is rotated by a wrench to drive the fastening block to move forward and backward, realizing the clamping part The opening and closing movement can be selected to install cable power contact clamps or busbar power contact clamps according to the situation, adapting to the versatility of low-voltage overhead lines and low-voltage busbars without power outage and quick access.

Benefits of technology

It effectively solves the problem of single access device type and slow disassembly and assembly speed, realizes versatility of low-voltage overhead lines and low-voltage busbars without power outage and fast access, and improves the power recovery speed and power supply reliability.

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Abstract

The invention discloses a scene-adaptive non-inductive access tail end drainage device which comprises a drainage module, the drainage module comprises a forceps body tube, a forceps head, a steering head, a transmission rod and a fastening block, a sliding groove is formed in the bottom of the head end of the forceps body tube, and the fastening block is embedded in the sliding groove and is in limiting sliding connection with the sliding groove; the transmission rod is arranged in the clamp body pipe, one end of the transmission rod is rotationally connected with the fastening block, and the other end of the transmission rod is provided with a transmission head used for being matched with a wrench. A nut is fixedly arranged in the plier body pipe, the transmission rod is in threaded connection with the nut, a first clamping part on the lower portion of the plier head and a second clamping part on the lower portion of the fastening block are detachably provided with contact wire clamp accessories, and the contact wire clamp accessories are cable electricity-taking contact wire clamps or busbar electricity-taking contact wire clamps. According to the invention, the universal non-power-cut quick access of the low-voltage overhead line and the low-voltage busbar can be met, and technical line reserve and scene adaptive support are provided for the subsequent construction of whole-system complete set non-inductive access equipment and the realization of the full coverage of an emergency guarantee supply scene.
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Description

Technical Field

[0001] The present application relates to the technical field of contactless access devices, and in particular to a scene-adaptive contactless access terminal drainage device. Background Art

[0002] At present, in the operation of the power system, temporary power outages and other uncontrollable factors often require temporary access to low-voltage generators to achieve emergency power supply. Due to the different prices, single types, and slow assembly and disassembly of existing access devices, emergency power supply is troublesome, and access methods need to be considered in different scenarios.

[0003] In the process of temporary power supply of low-voltage generator trucks, traditional access devices are mainly connected to the busbar with streamline clamps and busbar clamps. Due to the inconvenience of installing the access devices and the non-standard access devices, it usually takes several hours, which seriously affects the speed of power recovery. In addition, due to different scenarios and the diversity of electrical devices, the access methods may not be suitable. In addition, in some scenarios, if a power outage is adopted, it will inevitably greatly affect the reliability of power supply and the power demand of users. To this end, the present invention proposes a scene-adaptive, non-inductive access terminal drainage device. Summary of the invention

[0004] The embodiment of the present application provides a scenario-adaptive, non-inductive access terminal drainage device, which can meet the universal requirements of fast access to low-voltage overhead lines and low-voltage busbars without power outages, so as to solve the problems of single type and slow assembly and disassembly of existing access devices.

[0005] In view of this, the present application provides a scene-adaptive non-sensing access terminal drainage device, including: a drainage module;

[0006] The drainage module includes a clamp body tube, a clamp head, a steering head, a transmission rod and a fastening block;

[0007] The clamp head is fixedly arranged at the head end of the clamp body tube;

[0008] The steering head is arranged on the caliper body tube, and a guide spring is arranged between the steering head and the caliper body tube;

[0009] The bottom of the steering head is detachably connected with a drainage cable;

[0010] A sliding groove is provided at the bottom of the first end of the clamp body tube;

[0011] The upper part of the fastening block is embedded in the sliding groove and is limitedly slidably connected with the sliding groove;

[0012] The transmission rod is arranged in the clamp body tube;

[0013] One end of the transmission rod is rotatably connected to the upper part of the fastening block, and the other end is provided with a transmission head for cooperating with a wrench;

[0014] A nut is fixedly arranged inside the clamp body tube;

[0015] The outer surface of the transmission rod is correspondingly provided with an external thread for matching with the nut;

[0016] The transmission rod is threadedly connected to the nut;

[0017] A first clamping portion is provided on one side of the lower part of the clamp head close to the fastening block;

[0018] A second clamping portion is correspondingly provided on one side of the lower part of the fastening block close to the clamp head;

[0019] The first clamping part and the second clamping part can be detachably mounted with contact wire clamp accessories;

[0020] The contact wire clamp accessory is a cable power-taking contact wire clamp or a busbar power-taking contact wire clamp.

[0021] Optionally, it also includes: a supporting module for supporting the drainage cable.

[0022] Optionally, the support module includes a support frame and a fixed wire clamp fixedly arranged on the top of the support frame;

[0023] The fixed wire clamp is used to clamp and fix the drainage cable.

[0024] Optionally, the support frame is a tripod support.

[0025] Optionally, a positioning tube is provided in the clamp head;

[0026] A positioning rod for slidingly cooperating with the positioning tube is fixedly connected to one side of the fastening block close to the pliers head;

[0027] The fastening block is slidably connected to the clamp head through the positioning rod.

[0028] Optionally, a side of the clamp head close to the fastening block is fixedly connected to a limit rod;

[0029] The fastening block is correspondingly provided with a limiting sliding groove for cooperating with the limiting rod.

[0030] Optionally, a drainage cable connection end is provided at the bottom of the steering head;

[0031] A fastening screw for fixing the drainage cable is threadedly connected on the connection end of the drainage cable.

[0032] Optionally, the steering head is sleeved at a mounting position at the tail end of the clamp body tube;

[0033] The clamp body tube is provided with a limiting sleeve for limiting the steering head from sliding out toward the tail of the clamp body tube.

[0034] Optionally, a guide sleeve for guiding the wrench is coaxially fixed to the rear end of the clamp body tube.

[0035] Optionally, the drainage module further includes an insulating shell;

[0036] The insulating housing comprises a caliper head cover, a caliper body housing and a steering head housing;

[0037] The pliers head cover is used to wrap the pliers head;

[0038] The pliers body shell is used to wrap the pliers head cover, the fastening block and the pliers body tube;

[0039] The steering head housing is used for wrapping the steering head.

[0040] It can be seen from the above technical scheme that the embodiments of the present application have the following advantages: the scene-adaptive non-inductive access terminal drainage device can drive the fastening block to move forward and backward by rotating the transmission rod with a wrench, thereby realizing the opening and closing movement of the first clamping part and the second clamping part. At the same time, since the first clamping part and the second clamping part can selectively install the cable power supply contact wire clamp or the busbar power supply contact wire clamp according to actual conditions, the device can meet the universality of low-voltage overhead lines and low-voltage busbars for rapid access without power outages, effectively solving the problems of the single type of existing access devices and the slow disassembly and assembly speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a structural schematic diagram of a scene-adaptive, non-inductive access terminal drainage device in an embodiment of the present application;

[0042] Figure 2 An exploded view of the drainage module in the embodiment of the present application;

[0043] Figure 3 This is a schematic diagram of the structure of the drainage module in the embodiment of the present application after removing the insulating shell;

[0044] Figure 4 This is a schematic diagram of the internal structure of the drainage module in the embodiment of the present application after removing the insulating shell;

[0045] Figure 5 This is an exploded view of the drainage module head after removing the insulating shell in the embodiment of the present application;

[0046] Figure 6 This is an exploded view of the drainage module after the insulating shell is removed from the tail of the drainage module in the embodiment of the present application;

[0047] Figure 7 This is a schematic diagram of the structure of the cable power supply contact clamp in the embodiment of the present application;

[0048] Figure 8 This is a schematic diagram of the structure of the busbar electrical contact wire clamp in the embodiment of the present application;

[0049] Fig. 9 This is a schematic diagram of the structure of the support module in the embodiment of the present application;

[0050] Wherein, the accompanying drawings are marked as follows:

[0051] 1- drainage module, 101- clamp head, 102- clamp body tube, 103- steering head, 104- fastening block, 105- transmission rod, 106- nut, 107- positioning tube, 108- positioning rod, 109- limiting rod, 110- first retaining spring, 111- contact wire clamp accessories, 112- guide spring, 113- limiting sleeve, 114- second retaining spring, 115- guide sleeve, 116- fastening screw, 117- clamp head cover, 118- clamp body shell, 119- steering head shell, 2- drainage cable, 3- support module, 301- support frame, 302- fixed wire clamp. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0054] Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] During the research and development process, the inventor analyzed the existing non-inductive access and exit equipment and found that the existing technology mainly uses drainage clamps to access overhead conductors or busbars to access busbars. Although it can achieve non-inductive access and exit, the overhead drainage clamps need to be peeled before access, and cannot be connected to the busbar. The busbar clamps are of a single type and rely on imports, which are expensive and cannot meet the requirements of narrow busbar space and special-shaped access structures such as vertical busbars. To this end, the inventor combined the current situation and actual usage experience, took the non-stop access equipment as the starting point, and based on the finite element method, thermal-electric coupling analysis, focused on the device's force concentration points, electric field strength concentration points, and heat concentration points, and repeatedly improved and updated them until all problem points were eliminated.

[0056] This application provides an embodiment of a scene-adaptive non-sensing terminal drainage device. Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 .

[0057] The scene-adaptive non-sensing access terminal drainage device in this embodiment includes: a drainage module 1, the drainage module 1 includes a clamp body tube 102, a clamp head 101, a steering head 103, a transmission rod 105 and a fastening block 104, the clamp head 101 is fixedly arranged at the head end of the clamp body tube 102, the steering head 103 is arranged on the clamp body tube 102, and a guide spring 112 is arranged between the steering head 103 and the clamp body tube 102; the bottom of the steering head 103 is detachably connected to the drainage cable 2, the bottom of the head end of the clamp body tube 102 is provided with a sliding groove, the upper part of the fastening block 104 is embedded in the sliding groove, and is limitedly slidably connected with the sliding groove; the transmission rod 105 is arranged in the clamp body tube 102, the transmission spring 112 is arranged between the steering head 103 and the clamp body tube 102, and the drainage cable 2 is detachably connected to the bottom of the steering head 103, and the bottom of the head end of the clamp body tube 102 is provided with a sliding groove, and the upper part of the fastening block 104 is embedded in the sliding groove and is limitedly slidably connected with the sliding groove; the transmission rod 105 is arranged in the clamp body tube 102, and the transmission spring 112 is arranged between the steering head 103 and the clamp body tube 102. One end of the moving rod 105 is rotatably connected to the upper part of the fastening block 104, and the other end is provided with a transmission head for cooperating with a wrench; a nut 106 is fixedly provided in the clamp body tube 102, and the outer surface of the transmission rod 105 is correspondingly provided with an external thread for cooperating with the nut 106, and the transmission rod 105 is threadedly connected with the nut 106, and a first clamping part is provided on the side of the lower part of the clamp head 101 close to the fastening block 104, and a second clamping part is correspondingly provided on the side of the lower part of the fastening block 104 close to the clamp head 101, and the first clamping part and the second clamping part can be detachably installed with a contact wire clamp accessory 111, and the contact wire clamp accessory 111 is a cable power supply contact wire clamp or a busbar power supply contact wire clamp.

[0058] It should be noted that: this scenario-adaptive non-inductive access terminal drainage device can rotate the transmission rod 105 by a wrench, driving the fastening block 104 to move forward and backward, thereby realizing the opening and closing movement of the first clamping part and the second clamping part. At the same time, since the first clamping part and the second clamping part can selectively install cable power supply contact clamps or busbar power supply contact clamps according to actual conditions (during non-stop operation, sometimes it is necessary to draw power from the busbar of the power cabinet, and sometimes it is necessary to draw power from other energized cables), the device can meet the universal non-stop power supply and rapid access of low-voltage overhead lines and low-voltage busbars, effectively solving the problems of single type and slow disassembly and assembly speed of existing access devices.

[0059] The above is an embodiment of the present application of a scene-adaptive non-inductive access terminal drainage device. The following is an embodiment of the present application of a scene-adaptive non-inductive access terminal drainage device. For details, please refer to Figures 1 to 9 .

[0060] The scene-adaptive non-sensing access terminal drainage device in this embodiment includes: a drainage module 1, the drainage module 1 includes a clamp body tube 102, a clamp head 101, a steering head 103, a transmission rod 105 and a fastening block 104, the clamp head 101 is fixedly arranged at the head end of the clamp body tube 102, the steering head 103 is arranged on the clamp body tube 102, and a guide spring 112 is arranged between the steering head 103 and the clamp body tube 102, the bottom of the steering head 103 is detachably connected to the drainage cable 2, the bottom of the head end of the clamp body tube 102 is provided with a sliding groove, the upper part of the fastening block 104 is embedded in the sliding groove, and is limitedly slidably connected with the sliding groove; the transmission rod 105 is arranged in the clamp body tube 102, one end of the transmission rod 105 is rotatably connected to the upper part of the fastening block 104, and the other end is provided with a for fastening with A transmission head that cooperates with the wrench; a nut 106 is fixedly arranged inside the clamp body tube 102, and an external thread for cooperating with the nut 106 is correspondingly arranged on the outer surface of the transmission rod 105. Specifically, the nut 106 is arranged near the tail of the clamp body tube 102, and the external thread is processed at the tail of the transmission rod 105; the transmission rod 105 is threadedly connected with the nut 106, and a first clamping part is arranged on the side of the lower part of the clamp head 101 near the fastening block 104, and a second clamping part is correspondingly arranged on the side of the lower part of the fastening block 104 near the clamp head 101, wherein the first clamping part and the second clamping part are used for clamping cables or copper busbars; the first clamping part and the second clamping part can be detachably installed with a contact wire clamp accessory 111, and the contact wire clamp accessory 111 is a cable power supply contact wire clamp or a busbar power supply contact wire clamp.

[0061] It can be understood that this scenario-adaptive non-inductive access terminal drainage device is used for the connection between cables and cables, or between cables and copper busbars, and its function is to conduct current, which can realize the power transfer between low-voltage overhead lines, the power transfer between low-voltage overhead lines and distribution rooms, the power transfer between low-voltage distribution rooms, and the power supply from low-voltage generators to overhead lines and distribution rooms, and can achieve full coverage of scenarios for non-stop access equipment. When in use, the current passes through the cable or copper busbar, starting from the clamp head 101 and the fastening block 104, through the clamp body tube 102, and then through the steering head 103 to the drainage cable 2.

[0062] The cable power-taking contact wire clamp includes a first drainage spring, on which a circular arc-shaped contact surface is provided, and a plurality of contact racks are evenly provided on the circular arc-shaped contact surface along the direction of the arc surface; the busbar power-taking contact wire clamp includes a second drainage spring, which is in a U-shaped structure, and a plurality of contact points are formed at both ends of the U-shaped structure. By adopting a multi-point contact structure, the reliability and stability of power supply can be enhanced. Specifically, the first drainage spring and the second drainage spring can both be clamped on the first clamping portion and the second clamping portion, and the material of the first drainage spring and the second drainage spring is a high-conductivity material, which can be a copper-silver alloy.

[0063] Specifically, the guide spring 112 is in a band-like shape and surrounds the caliper body tube 102 , and the steering head 103 contacts the caliper body tube 102 through the guide spring 112 .

[0064] It also includes: a supporting module 3 for supporting the drainage cable 2.

[0065] It is understandable that since the drainage cable 2 is relatively heavy, if it is not supported, it is easy to cause deformation of the front-end busbar and the drainage module 1, which will further affect the service life of the drainage module 1. In severe cases, it may even affect the transmission of electric energy. For this reason, this scene-adaptive non-inductive access terminal drainage device is provided with a support module 3, which can greatly reduce the overall support burden.

[0066] The support module 3 includes a support frame 301 and a fixed wire clamp 302 fixedly arranged at the top of the support frame 301, and the fixed wire clamp 302 is used to clamp and fix the drainage cable 2. Specifically, the support frame 301 can be a triangular bracket.

[0067] A positioning tube 107 is provided in the pliers head 101, and a positioning rod 108 for slidingly cooperating with the positioning tube 107 is fixedly connected to a side of the fastening block 104 close to the pliers head 101. Specifically, the positioning rod 108 is threadedly connected to the fastening block 104; the fastening block 104 is slidably connected to the pliers head 101 through the positioning rod 108. Specifically, a first clamping spring 110 for clamping the positioning tube 107 to prevent the positioning tube 107 from sliding out is fixedly provided at the end of the pliers head 101.

[0068] A limiting rod 109 is fixedly connected to one side of the clamp head 101 close to the fastening block 104, and a limiting slide groove for cooperating with the limiting rod 109 is correspondingly provided on the fastening block 104. In this embodiment, there are two limiting rods 109, which are arranged in parallel and spaced apart, and limiting slide grooves are symmetrically provided on both sides of the fastening block 104, and the two limiting slide grooves are slidably matched with the two limiting rods 109 respectively.

[0069] It should be noted that: through the cooperation of the limiting rod 109 and the limiting slide groove, the shaking degree of the fastening block 104 during the movement can be reduced, thereby avoiding poor contact between the fastening block 104 and the copper busbar and affecting current conduction.

[0070] A drainage cable connection end is provided at the bottom of the steering head 103 , and a fastening screw 116 for fixing the drainage cable 2 is threadedly connected to the drainage cable connection end.

[0071] The steering head 103 is sleeved on the mounting position at the rear of the clamp body tube 102, and a limiting sleeve 113 is provided on the clamp body tube 102 for limiting the steering head 103 from sliding out toward the rear of the clamp body tube 102. Specifically, the limiting sleeve 113 is sleeved on the clamp body tube 102, and a second retaining spring 114 is fixedly provided on the clamp body tube 102 for limiting the limiting sleeve 113 from sliding out.

[0072] A guide sleeve 115 for guiding the wrench is coaxially fixed to the tail end of the clamp body tube 102. Specifically, the transmission head is a square head, and the wrench is a cylindrical wrench. In this embodiment, the limit sleeve 113 is located between the steering head 103 and the guide sleeve 115.

[0073] It should be noted that: since the transmission head at the end of the transmission rod 105 is located inside the clamp body tube 102, it is inconvenient for the operator to align it during use. Therefore, a guide sleeve 115 is coaxially fixed at the tail end of the clamp body tube 102, which can facilitate the operator to quickly align the wrench with the transmission head, making it more convenient to use.

[0074] The drainage module 1 also includes an insulating shell, which includes a clamp head cover 117, a clamp body shell 118 and a steering head shell 119. The clamp head cover 117 is used to wrap the clamp head 101, the clamp body shell 118 is used to wrap the clamp head cover 117, the fastening block 104 and the clamp body tube 102, and the steering head shell 119 is used to wrap the steering head 103.

[0075] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A scene-adaptive non-sensing terminal drainage device, characterized in that: include: Drainage module; The drainage module includes a clamp body tube, a clamp head, a steering head, a transmission rod and a fastening block; The clamp head is fixedly arranged at the head end of the clamp body tube; The steering head is arranged on the caliper body tube, and a guide spring is arranged between the steering head and the caliper body tube; The bottom of the steering head is detachably connected with a drainage cable; A sliding groove is provided at the bottom of the first end of the clamp body tube; The upper part of the fastening block is embedded in the sliding groove and is limitedly slidably connected with the sliding groove; The transmission rod is arranged in the clamp body tube; One end of the transmission rod is rotatably connected to the upper part of the fastening block, and the other end is provided with a transmission head for cooperating with a wrench; A nut is fixedly arranged inside the clamp body tube; The outer surface of the transmission rod is correspondingly provided with an external thread for matching with the nut; The transmission rod is threadedly connected to the nut; A first clamping portion is provided on one side of the lower part of the clamp head close to the fastening block; A second clamping portion is correspondingly provided on one side of the lower part of the fastening block close to the clamp head; The first clamping part and the second clamping part can be detachably mounted with contact wire clamp accessories; The contact wire clamp accessory is a cable power-taking contact wire clamp or a busbar power-taking contact wire clamp.

2. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: Also includes: A supporting module is used to support the drainage cable.

3. The scene-adaptive non-sensing access terminal drainage device according to claim 2, characterized in that: The support module includes a support frame and a fixed wire clamp fixedly arranged on the top of the support frame; The fixed wire clamp is used to clamp and fix the drainage cable.

4. The scene-adaptive non-sensing access terminal drainage device according to claim 3 is characterized in that: The supporting frame is a tripod support.

5. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: A positioning tube is provided in the clamp head; A positioning rod for slidingly cooperating with the positioning tube is fixedly connected to one side of the fastening block close to the pliers head; The fastening block is slidably connected to the clamp head through the positioning rod.

6. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: A side of the clamp head close to the fastening block is fixedly connected to a limit rod; The fastening block is correspondingly provided with a limiting sliding groove for cooperating with the limiting rod.

7. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: A drainage cable connection end is provided at the bottom of the steering head; A fastening screw for fixing the drainage cable is threadedly connected on the connection end of the drainage cable.

8. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: The steering head is sleeved on the mounting position of the tail of the clamp body tube; The clamp body tube is provided with a limiting sleeve for limiting the steering head from sliding out toward the tail of the clamp body tube.

9. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: A guide sleeve for guiding the wrench is coaxially fixed to the tail end of the clamp body tube.

10. The scene-adaptive non-sensing access terminal drainage device according to claim 1, characterized in that: The drainage module also includes an insulating shell; The insulating housing comprises a caliper head cover, a caliper body housing and a steering head housing; The pliers head cover is used to wrap the pliers head; The pliers body shell is used to wrap the pliers head cover, the fastening block and the pliers body tube; The steering head housing is used for wrapping the steering head.

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