Insulator string replacement fixture

Abstract

The utility model relates to power construction equipment technical field discloses a kind of insulator string replacement fixtures, comprising: first fixture and second fixture;Fixed pipe being equipped on the first fixture, movable pipe being equipped on the second fixture, the second fixture can be on the movable pipe sliding;Fixed mouth being opened on the first fixture and second fixture, the fixed mouth is rotatably connected with positioning plate;The problems that existing fixture cannot realize quick relaxation insulator string, positioning adjustment is complicated and operation risk is high are solved.It is realized to the axial tension control of insulator string by setting the screw structure between fixed pipe and movable pipe, and being supplemented with casing lever driving mechanism, so that insulator string is effectively relaxed under the condition of not interrupting wire tension, facilitating subsequent replacement operation, significantly improving the controllability and safety of on-site construction.

Description

Technical Field

[0001] This utility model relates to the field of power construction equipment technology, specifically to an insulator string replacement clamp. Background Technology

[0002] Insulator strings are widely used in high-voltage transmission lines to support conductors and provide electrical insulation. During long-term operation, insulators may fail due to aging, contamination, or mechanical damage, requiring timely replacement to ensure line safety. When replacing insulator strings, temporary tension and restraint must be applied to the conductors or insulator strings, followed by manual relaxation to release tension and facilitate disassembly. However, in actual construction, existing clamps generally suffer from simple structures and limited functionality, failing to effectively address the dual needs of tension release and clamp positioning.

[0003] Existing clamps often use fixed spacing structures during positioning, lacking adjustable mechanisms. This makes them difficult to adapt to different tower structures or to cope with errors in the hanging point position, affecting installation efficiency and stability. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides an insulator string replacement clamp, which aims to alleviate the above problems to at least a certain extent.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An insulator string replacement clamp includes: First and second card holders; A fixed tube is provided on the first clamp, and a movable tube is provided on the second clamp, wherein the second clamp can slide on the movable tube; A fixing port is provided on the first clamp and the second clamp, and a positioning plate is rotatably connected inside the fixing port; A locking component located between the fixing port and the positioning plate is used to lock the position of the positioning plate after the positioning plate is rotated to a predetermined angle and engages with the fixing port. A tightening component located between the fixed tube and the movable tube is used to adjust the distance between them; An adjusting component is provided between the second clamp and the movable tube for adjusting the position of the second clamp on the movable tube.

[0006] Preferably, the locking component includes a connecting shaft rotatably connected to the fixing port, a bolt a is fixed on the connecting shaft, a nut is threaded onto the bolt a, and a slot is provided at one end of the positioning plate.

[0007] Preferably, the tightening component includes a lead screw threaded onto the fixed pipe, and the other end of the lead screw is threaded onto the movable pipe.

[0008] Preferably, a sleeve is fixed on the lead screw, and a lever is slidably connected to the sleeve.

[0009] Preferably, the adjusting component includes a connection port opened on the second clamp, the movable tube is slidably sleeved in the connection port, the movable tube has multiple positioning ports, the second clamp has a connection cavity communicating with the connection port, and a positioning strip is slidably connected in the connection cavity to cooperate with one of the positioning ports.

[0010] Preferably, a spring is connected between the positioning strip and the connecting cavity.

[0011] Preferably, the bottom of the second clamp is provided with an adjustment plate, and there is a predetermined distance between the adjustment plate and the second clamp. The top of the adjustment plate is connected to a top rod extending into the connecting cavity, and the bottom of the positioning strip is provided with a wedge-shaped opening.

[0012] Preferably, the bottom of the second clamp is rotatably connected to a bolt b, and the adjusting plate is threaded onto the bolt b.

[0013] In summary, the present invention has the following main advantages: This application provides an insulator string replacement clamp that solves the problems of existing clamps, such as the inability to quickly loosen insulator strings, cumbersome positioning and adjustment, and high operational risks. By setting a screw structure between the fixed and movable tubes, and supplementing it with a sleeve lever drive mechanism, it achieves axial tension control of the insulator string, allowing it to be effectively loosened without interrupting conductor tension. This facilitates subsequent replacement operations and significantly improves the controllability and safety of on-site construction. Simultaneously, by setting multiple positioning ports on the movable tube, an elastic positioning strip within the connecting cavity, and a matching wedge-shaped unlocking structure, a multi-level precise adjustment and rapid locking system for the clamp's end position is constructed. This allows operators to quickly align the clamp based on the hanging point error, improving adjustment accuracy and adaptability. The overall structure is simple to operate, reliable in positioning, and has dual functions of loosening control and positioning adjustment, making it particularly suitable for insulator replacement tasks in high-altitude, compact spaces. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the second clamp structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the second clamp structure of this utility model.

[0015] Figure label: 100. First clamp; 101. Second clamp; 102. Fixed tube; 103. Movable tube; 104. Fixed port; 105. Positioning plate; 200. Connecting shaft; 201. Bolt a; 202. Nut; 203. Groove; 204. Lead screw; 205. Sleeve; 206. Lever; 300. Connection port; 301. Positioning port; 302. Connection cavity; 303. Positioning strip; 304. Spring; 306. Adjusting plate; 307. Top rod; 308. Wedge-shaped port; 309. Bolt b. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] refer to Figure 1 - Figure 3 In this embodiment, an insulator string replacement clamp includes: a first clamp 100 and a second clamp 101.

[0018] The first clamp 100 is provided with a fixed tube 102, and the second clamp 101 is provided with a movable tube 103. The second clamp 101 can slide along the axial direction of the fixed tube 102. With this structure, the relative distance between the first clamp 100 and the second clamp 101 can be flexibly adjusted according to the length of the insulator string or the requirements of the field conditions, thereby improving adaptability.

[0019] The first clamp 100 and the second clamp 101 are respectively provided with fixing ports 104, and a positioning plate 105 is rotatably connected in each fixing port 104. The positioning plate 105 can be adjusted in angle around the rotation axis on one side of the fixing port 104 so as to achieve auxiliary limiting of the insulator or hanging point during the replacement operation.

[0020] A locking component is provided between the fixing port 104 and the positioning plate 105. After the positioning plate 105 is rotated to a predetermined angle and fits into the fixing port 104, it is locked in that position to ensure that the positioning plate 105 does not loosen during operation, thereby improving the stability and safety of the overall structure.

[0021] To achieve stable adjustment of the distance between the first clamp 100 and the second clamp 101, a tightening component is provided between the fixed tube 102 and the movable tube 103.

[0022] In addition, to further improve adjustment accuracy and adaptability, an adjustment component is provided between the second clamp 101 and the movable tube 103. This adjustment component is used to fine-tune the axial position of the second clamp 101 on the movable tube 103 to meet different hanging point positions and improve the versatility and ease of operation of the overall clamp structure.

[0023] With the above settings, during the actual replacement process, the operator can manually adjust the axial sliding position of the movable tube 103 along the fixed tube 102 according to the current tower structure or the specific length of the insulator string to be replaced, thereby changing the distance between the first clamp 100 and the second clamp 101, and thus accurately aligning the insulator hanging point. Compared with traditional fixed structure clamps, this adjustment method significantly improves adaptability and on-site operation efficiency.

[0024] At both ends of the clamp, the first clamp 100 and the second clamp 101 are respectively provided with fixing ports 104, and a positioning plate 105 is rotatably connected within each fixing port 104. The positioning plate 105 can rotate around its set rotation axis. The operator can rotate the positioning plate 105 to a suitable limit angle according to the actual spatial angle requirements of the hanging point, thereby providing auxiliary support for the insulator string or conductor hook. When the positioning plate 105 is rotated to the target angle, the angle is locked by the locking component set between the fixing port 104 and the positioning plate 105, thereby avoiding problems such as shaking and dislocation during construction. This structure can effectively improve the fit stability between the clamp end and the hanging point, thereby enhancing the overall stress stability and improving the safety guarantee during the replacement process.

[0025] In this embodiment, the locking component includes a connecting shaft 200 rotatably connected within the fixing port 104. One end of the connecting shaft 200 is fixedly provided with a bolt a201, the external thread of which engages with a nut 202. One end of the positioning plate 105 is provided with a slot 203. By passing the bolt a201 through the slot 203 and tightening it with the nut 202, the positioning plate 105 is precisely locked after rotating to a predetermined angle, preventing the positioning plate 105 from shaking or dislodging during operation, thereby improving the stability and safety of the clamp during use.

[0026] In this embodiment, the tightening component includes a lead screw 204 threaded onto the fixed tube 102, and the other end of the lead screw 204 is threaded onto the movable tube 103. Specifically, one end of the lead screw 204 is screwed into a threaded hole provided on the fixed tube 102 through an external thread, and the other end passes through the movable tube 103 and is threadedly connected to its inner wall.

[0027] With the above setup, after the operator fixes the first clamp 100 and the second clamp 101 to the hanging points on both sides of the insulator string, they begin to rotate the lead screw 204. Since one end of the lead screw 204 is threaded into the fixed tube 102 and the other end is threaded into the movable tube 103, the rotation will drive the movable tube 103 and the fixed tube 102 to move towards each other, thereby causing the first clamp 100 and the second clamp 101 to move closer to each other. This action structurally creates an axial tensioning path, forming a "reverse traction force" on the insulator string that was originally in a state of tension, causing it to gradually relax.

[0028] In this embodiment, a sleeve 205 is fixed to the lead screw 204. The sleeve 205 is arranged along the axial direction of the lead screw 204 and is fixedly installed at the middle position of the lead screw 204 by welding or screws. A lever 206 is slidably connected above the sleeve 205. The lever 206 can rotate around its own central axis, and its bottom end is slidably engaged with the sleeve 205, which facilitates the operator to apply force by means of the lever 206 structure to realize the rotation operation of the lead screw 204.

[0029] In this embodiment, the adjusting component includes a connection port 300 opened on the second clamp 101, and the movable tube 103 is slidably sleeved in the connection port 300. Multiple positioning ports 301 are spaced axially on the outer wall of the movable tube 103; the second clamp 101 has a connecting cavity 302 communicating with the connection port 300, and a positioning strip 303 is slidably connected in the connecting cavity 302. The positioning strip 303 can be inserted into and cooperate with one of the positioning ports 301 to fix the position of the movable tube 103 relative to the second clamp 101.

[0030] With the above configuration, the movable tube 103 is fitted into the connection port 300 of the second clamp 101 and can slide axially within the connection port 300. Its outer wall has multiple positioning ports 301, each corresponding to an adjustable position. The connecting cavity 302 inside the second clamp 101 communicates with the connection port 300 and accommodates an axially sliding positioning strip 303. During adjustment, the operator can push the positioning strip 303 as needed, inserting it into the target positioning port 301, thereby locking and fixing the movable tube 103 at that position.

[0031] Compared to the traditional fixed connection method, the structure with multiple positioning ports 301 allows the operator to adjust the distance between the second clamp 101 and the movable tube 103 in multiple "selectable" ways according to actual needs, thereby effectively solving the problem of clamps not fitting due to tower type differences or hanging point errors.

[0032] In this embodiment, a spring 304 connects the positioning strip 303 and the connecting cavity 302. The spring 304 is located on the back side of the positioning strip 303, with one end abutting against the inner wall of the connecting cavity 302 and the other end abutting against the positioning strip 303, so that the positioning strip 303 always generates elastic force towards the positioning port 301 of the movable tube 103. When the positioning strip 303 is aligned with the positioning port 301 on the movable tube 103, the spring 304 pushes it to automatically spring in, achieving rapid positioning.

[0033] In this embodiment, the bottom of the second clamp 101 is provided with an adjusting plate 306, and the top of the adjusting plate 306 is connected to a push rod 307. The push rod 307 extends vertically and enters the connecting cavity 302, with its upper end aligned with the bottom of the positioning strip 303. The bottom of the positioning strip 303 is provided with a wedge-shaped opening 308, which is used to form a wedge-shaped engagement with the push rod 307 to control the axial movement of the positioning strip 303.

[0034] With the above configuration, during insulator string replacement operations, the positioning strip 303 needs to have reliable insertion capability, as well as be easy to release quickly and repeatedly adjust. In this embodiment, by setting up a linkage structure of adjustment plate 306—top rod 307—wedge-shaped opening 308, a mechanism is constructed to indirectly control the movement of the positioning strip 303 from the bottom of the clamp.

[0035] Specifically, the adjusting plate 306 is installed at the bottom of the second clamp 101 and maintains a certain distance from it, allowing it to move slightly in the vertical direction; the top rod 307 connected to its top extends into the connecting cavity 302, with the head of the top rod 307 aligned with the wedge-shaped opening 308 at the bottom of the positioning strip 303. The wedge-shaped opening 308 has an inclined structure. When the top rod 307 is pushed upward, the wedge-shaped surface forces the positioning strip 303 to move slightly out of the positioning opening 301 in the horizontal direction, thereby releasing the positioning lock; when the top rod 307 is released, under the pushing action of the spring 304, the positioning strip 303 can spring back to its original position and automatically lock into the target positioning opening 301.

[0036] Operators do not need to directly touch or remove the positioning strip 303. They can control the action of the top rod 307 by simply pushing the adjusting plate 306 to realize the insertion and removal of the positioning strip 303, thereby improving operational safety and efficiency.

[0037] In this embodiment, a bolt b309 is rotatably connected to the bottom of the second clamp 101, and an adjusting plate 306 is threaded onto the bolt b309. Specifically, the bolt b309 is mounted in a mounting hole at the bottom of the second clamp 101 in a pivot manner, with its axis perpendicular to the adjusting plate 306. The adjusting plate 306 has an internal threaded hole in its middle, into which the threaded section of the bolt b309 is screwed. When the bolt b309 is rotated, the adjusting plate 306 can be driven to rise or fall vertically, thereby controlling the insertion and removal state of the positioning strip 303 through the top rod 307 connected to its top.

[0038] Through the self-locking effect formed by the threaded structure, the adjustment plate 306 can remain stable in any position without the need for external holding force, preventing vibration and loosening; even in complex environments such as outdoor wind vibration and high-altitude operations, it can ensure that the control state is not accidentally triggered.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An insulator string replacement clamp, characterized in that, include: First card (100) and second card (101); A fixed tube (102) is provided on the first clamp (100), and a movable tube (103) is provided on the second clamp (101). The second clamp (101) can slide on the movable tube (103). A fixing port (104) is provided on the first clamp (100) and the second clamp (101), and a positioning plate (105) is rotatably connected in the fixing port (104). A locking component located between the fixing port (104) and the positioning plate (105) is used to lock the position of the positioning plate (105) after the positioning plate (105) is rotated to a predetermined angle and engages with the fixing port (104); A tightening component is provided between the fixed tube (102) and the movable tube (103) for adjusting the distance between them; An adjustment component is provided between the second clamp (101) and the movable tube (103) for adjusting the position of the second clamp (101) on the movable tube (103).

2. The insulator string replacement clamp according to claim 1, characterized in that, The locking component includes a connecting shaft (200) rotatably connected to the fixing port (104), a bolt a (201) fixed on the connecting shaft (200), a nut (202) threaded onto the bolt a (201), and a slot (203) opened at one end of the positioning plate (105).

3. The insulator string replacement clamp according to claim 1, characterized in that, The tightening component includes a lead screw (204) threaded onto the fixed tube (102), and the other end of the lead screw (204) is threaded onto the movable tube (103).

4. The insulator string replacement clamp according to claim 3, characterized in that, A sleeve (205) is fixed on the lead screw (204), and a lever (206) is slidably connected to the sleeve (205).

5. The insulator string replacement clamp according to claim 1, characterized in that, The adjusting component includes a connection port (300) opened on the second clamp (101), the movable tube (103) is slidably sleeved in the connection port (300), the movable tube (103) is provided with a plurality of positioning ports (301), the second clamp (101) is provided with a connecting cavity (302) communicating with the connection port (300), and a positioning strip (303) is slidably connected in the connecting cavity (302) to cooperate with one of the positioning ports (301).

6. The insulator string replacement clamp according to claim 5, characterized in that, A spring (304) is connected between the positioning bar (303) and the connecting cavity (302).

7. An insulator string replacement clamp according to claim 5, characterized in that, The bottom of the second clamp (101) is provided with an adjustment plate (306) with a predetermined distance between it and the second clamp (101). The top of the adjustment plate (306) is connected to a top rod (307) extending into the connecting cavity (302). The bottom of the positioning strip (303) is provided with a wedge-shaped opening (308).

8. An insulator string replacement clamp according to claim 7, characterized in that, The bottom of the second clamp (101) is rotatably connected to a bolt b (309), and the adjusting plate (306) is threaded onto the bolt b (309).

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