An outlet type wire clamp for power transmission lines

Abstract

This utility model relates to an export-type wire clamp for power transmission lines, specifically in the field of power transmission line clamps. It solves the technical problems of difficult operation and unreliable tightening effect during wire clamp use. The clamp includes a main handle and a main clamping frame. The main clamping frame has clamping blocks inside, and an auxiliary frame on one side of the main handle. A through-shaft is located within the main handle and auxiliary frame. One end of the through-shaft has a limiting block, and a threaded post is located within the through-shaft. A push shaft is fixedly installed at one end of the threaded post and placed inside the through-shaft. Two symmetrically distributed movable limiting blocks are slidably connected within the through-shaft, each capable of contacting the same push shaft on one side. By rotating the threaded post, this utility model can change the surface state of the through-shaft, enabling the through-connection of wire clamps placed on the main handle, auxiliary frame, and insulator strings. This reduces the traditional operation steps requiring additional clamps for fixation after through-connection, and the non-integrated structure can sometimes increase the difficulty of operation for personnel at heights.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line clamp technology, specifically an export-type clamp for power transmission lines. Background Technology

[0002] Export-grade wire clamps are used in power systems to connect conductors to equipment, conductors to conductors, and insulator strings to conductors. They are specifically designed and manufactured to meet international market standards and export requirements. They must comply with the electrical safety regulations of the target export country and have strict requirements regarding materials, structural strength, conductivity, and corrosion resistance. Suitable for overhead transmission lines, substations, and other similar applications, they ensure stable current transmission and offer ease of installation and environmental adaptability. They are particularly useful for power towers, where the fabrication of conductor clamps and insulator string connections is often essential.

[0003] Currently, in actual operation, wire clamps are used to connect the conductors and insulator strings. The specific operation steps are usually as follows: first, the wire clamp is connected to the insulator string. During the connection process, the connecting ring on the insulator string needs to be placed at the connection position of the wire clamp. Then, the limiting pin is used to thread the insulator string and the wire clamp together. After the insulator string and the wire clamp are connected, the insulator string is fixed by inserting a strip of metal into the end of the limiting pin. Since the actual operation needs to be carried out at the top of the power tower, the high-altitude operation and the complicated steps greatly increase the difficulty of operation.

[0004] Furthermore, when connecting the clamp to the conductor, the insulator string and the clamp need to be tightened first. Then, relying on its own conical structure, the conductor is placed inside the conical structure. At this time, there is still a lot of space between the conductor and the conical structure. Then, the external wedge block is taken out to fill the excess space, thereby squeezing and connecting the conductor to fix it. This operation still has the problem of high-altitude operation difficulty mentioned above, and it is also easy to have poor tightening effect due to the large weight of the insulator string and the clamp.

[0005] Based on this, the present invention provides an export-type wire clamp for power transmission lines to solve the above problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides an export-type wire clamp for power transmission lines. This utility model has an ingenious structure and focuses on practicality, effectively solving the technical problems of difficult operation and inability to guarantee the tightening effect when using wire clamps.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An export-type wire clamp for power transmission lines includes a main handle and a clamping main frame fixedly installed on the upper end of the main handle. Two symmetrically distributed clamping blocks are slidably connected inside the clamping main frame. An auxiliary frame is fixedly installed on one side of the main handle. The same through-shaft is passed through both the main handle and the auxiliary frame. A limiting circular block placed on one side of the main handle is fixedly installed at one end of the through-shaft. A threaded post is internally threaded to the other end of the through-shaft. A push shaft placed inside the through-shaft is fixedly installed at one end of the threaded post. Two symmetrically distributed movable limiting blocks are slidably connected inside the through-shaft. One side of each of the two movable limiting blocks can contact the same push shaft.

[0009] Preferably, the through shaft has four symmetrically distributed grooves, each groove has a limit rod fixedly installed in it, and each of the four limit rods has a limit sleeve fixedly installed on one side of the movable limit block. Each limit sleeve and groove has a limit spring fixedly installed between them.

[0010] Preferably, two symmetrically distributed slide rails are fixedly installed on the inner side of the clamping main frame, and a sliding block is slidably connected in each of the two slide rails. A clamping block is fixedly installed on one side of each of the two sliding blocks.

[0011] Preferably, a pusher is fixedly installed on one side of one of the clamping blocks, a support groove is opened in both of the sliding blocks, a support slider is slidably connected in both of the support grooves, and the same connecting shaft is fixedly installed at the port position of both support sliders.

[0012] Preferably, the clamping main frame has an inner groove, a support rod is fixedly installed inside the inner groove, a connecting frame is slidably connected to the surface of the support rod and fixedly installed on one side of the connecting shaft, and a support spring is fixedly installed between the inner groove and the connecting frame.

[0013] Preferably, a reinforcing rib is fixedly installed between the main handle and the clamping main frame.

[0014] This utility model has the following technical advantages.

[0015] 1. This utility model can drive the push shaft to move by rotating the threaded column. The movement of the push shaft can push out the moving limit block, thereby changing the surface state of the through shaft. By changing the surface state of the through shaft, the through shaft can be used to connect the main handle, auxiliary frame and insulator string, and fix them directly after the through connection. This reduces the operation steps that require additional clamps to assist in fixing after the through connection. At the same time, the traditional auxiliary fixing structure is separate from the through structure itself. The non-integrated structure can sometimes increase the difficulty of operation for operators at height.

[0016] 2. This utility model pushes the push frame upward, causing the clamping block and sliding block to rise accordingly. This causes the two clamping blocks to gradually move closer together, which enables the clamping and fixing of the wire and the connection between the structure and the wire. This reduces the need for additional wedge blocks to tighten the wire connection required by traditional structures, which is difficult to operate and cannot guarantee the tightening effect by adjusting the position. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the assembly structure of the main handle, clamping frame and limiting circular block in this utility model.

[0020] Figure 3 This is a schematic diagram of the assembly structure of the main shank, the through shaft, and the threaded column in this utility model.

[0021] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] Figure 5 This is a schematic diagram of the assembly structure of the main handle, clamping frame and clamping block in this utility model.

[0023] Figure 6 This is a schematic diagram of the assembly structure of the clamping main frame, reinforcing ribs and sliding block in this utility model.

[0024] Figure 7 This is a schematic diagram of the assembly structure of the main handle, clamping frame and connecting shaft in this utility model.

[0025] Figure 8 This is a schematic diagram of the assembly structure of the main handle, clamping main frame, auxiliary frame, through shaft and threaded column in this utility model.

[0026] Figure 9 This is a schematic diagram of the assembly structure of the clamping main frame, sliding block and connecting shaft in this utility model.

[0027] Figure label:

[0028] 1. Main handle; 2. Clamping main frame; 3. Auxiliary frame; 4. Through shaft; 5. Threaded column; 6. Push frame; 7. Reinforcing rib; 8. Sliding block; 9. Clamping block; 10. Limiting round block; 11. Push shaft; 12. Moving limit block; 13. Limiting rod; 14. Limiting sleeve; 15. Limiting spring; 16. Slide rail; 17. Support slide groove; 18. Supporting slider; 19. Connecting shaft; 20. Connecting frame; 21. Support rod; 22. Supporting spring. Detailed Implementation

[0029] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 9 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0030] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0031] This utility model relates to an export-type wire clamp for power transmission lines, comprising a main handle 1 and a clamping main frame 2 fixedly installed on the upper end of the main handle 1. A through hole is provided near the bottom of the main handle 1. The clamping main frame 2 is a hollow, cone-shaped metal block with one side through-hole. The hollow structure effectively reduces the overall weight while ensuring overall structural stability. Two symmetrically distributed clamping blocks 9 are slidably connected to the inner side of the clamping main frame 2. An auxiliary frame 3 is fixedly installed on one side of the main handle 1. The auxiliary frame 3 is an L-shaped metal frame with a through hole near its bottom, the size of which matches the through hole on the main handle 1. The same through-shaft 4 passes through both the main handle 1 and the auxiliary frame 3. A through-hole with a threaded groove is provided inside the through-shaft 4. A limiting round block 10 placed on one side of the main handle 1 is fixedly installed at one end of the through-shaft 4. A threaded post 5 is internally threaded to the other end of the through-shaft 4. The threaded post 5 has a surface with a groove... The threaded shaft 4 has a matching internal threaded groove. A disc is fixedly installed at one end of the threaded post 5. The disc is used for active driving by the operator. A push shaft 11 is fixedly installed at one end of the threaded post 5 and placed inside the through shaft 4. The push shaft 11 is a cylindrical metal with one round end. Two symmetrically distributed movable limit blocks 12 are slidably connected inside the through shaft 4. A circular notch is opened on one side of each of the two movable limit blocks 12. One side of each of the two movable limit blocks 12 can contact the same push shaft 11. Four symmetrically distributed grooves are opened inside the through shaft 4. A limit rod 13 is fixedly installed in each groove. A limit sleeve 14 is slidably connected to the surface of each of the four limit rods 13 and fixedly installed on one side of the movable limit block 12. A limit spring 15 is fixedly installed between each limit sleeve 14 and the groove. The limit spring 15 is a push spring, which uses elastic potential energy to retract and reset the movable limit block 12.

[0032] In this embodiment, when it is necessary to connect the structure to the insulator string on the power tower, the threaded column 5 can be rotated first, which, in conjunction with the threaded groove on the inner side of the through shaft 4, drives the threaded column 5 and the push shaft 11 to move outward. At this time, the push shaft 11 will move away from the two moving limit blocks 12. As the moving limit block 12 disengages from the push shaft 11, it is pushed back in conjunction with the limit spring 15, which drives the limit sleeve 14 and the moving limit block 12 to move into the through shaft 4 until the push shaft 11 is completely disengaged from the moving limit block 12. At this time, the moving limit block 12 is completely retracted into the through shaft 4.

[0033] After adjusting the position of the movable limiting block 12, the collar on the insulator string can be placed in the space between the main handle 1 and the auxiliary frame 3. Then, the limiting circular block 10, the through shaft 4, and the threaded post 5 are inserted into the main handle 1, the collar on the insulator string, and the inner side of the auxiliary frame 3. After the limiting circular block 10, the through shaft 4, and the threaded post 5 are inserted, the threaded post 5 can be rotated in the opposite direction, driving the threaded post 5 and the push shaft 11 to move forward. The push shaft 11 pushes the two movable limiting blocks 12 outward by relying on the circular structure at the port position. The auxiliary frame 3 is limited by the pushed-out movable limiting block 12, thereby realizing the connection of the insulator string.

[0034] As one embodiment, two symmetrically distributed slide rails 16 are fixedly installed on the inner side of the clamping main frame 2. Sliding blocks 8 are slidably connected within each slide rail 16. Clamping blocks 9 are fixedly installed on one side of each sliding block 8. The two slide rails 16 match the tapered inclined grooves on both sides of the clamping main frame 2. The two slide rails 16 are symmetrical and inclined, but the two clamping blocks 9 are symmetrical and perpendicular to the ground. When the two sliding blocks 8 are pushed upwards, the distance between them gradually decreases, and vice versa. Conversely, when the two sliding blocks 8 are pushed upwards, the distance between the two clamping blocks 9 gradually shortens, and vice versa. Anti-slip teeth are provided on the surface of the clamping blocks 9. A pusher 6 is fixedly installed on one side of one of the clamping blocks 9. A ring is provided inside the pusher 6, which is used to adjust the pushing of the clamping blocks 9 and the sliding blocks 8. Support grooves 17 are provided inside each of the two sliding blocks 8. The groove 17 is a cylindrical slide groove in the left-right direction. Support sliders 18 are slidably connected in both support slide grooves 17. The support sliders 18 are cylindrical metal that matches the size of the support slide grooves 17. The same connecting shaft 19 is fixedly installed at the port of both support sliders 18. The clamping main frame 2 has an inner groove. A support rod 21 is fixedly installed inside the inner groove. The support rod 21 is a metal column. A connecting frame 20 is slidably connected to the surface of the support rod 21 and fixedly installed on one side of the connecting shaft 19. The connecting frame 20 is a Z-shaped metal. A through hole matching the support rod 21 is opened at the upper end of the connecting frame 20. A support spring 22 is fixedly installed between the inner groove and the connecting frame 20. The support spring 22 uses elastic potential energy to push the connecting frame 20 upward and limit it, thereby realizing continuous upward support for the connecting shaft 19, the sliding block 8 and the clamping block 9, and improving the stability of the clamping block 9 during clamping.

[0035] In this embodiment, when it is necessary to connect the structure to the wire, the main handle 1 can be tightened first, and then the wire can be placed inside the two clamping blocks 9. After the positions of the wire and the clamping blocks 9 are aligned, the push frame 6 can be pushed upward, which will cause the clamping blocks 9 and the sliding blocks 8 to rise. The rise of the sliding blocks 8 will cause the two support sliders 18 and the same connecting shaft 19 to rise, which will cause the other sliding block 8 to rise. The simultaneous rise of the two sliding blocks 8 will cause the two clamping blocks 9 to gradually approach each other. The gradual approach of the two clamping blocks 9 can achieve the clamping and fixing of the wire, and realize the connection between the structure and the wire.

[0036] As an example, a reinforcing rib 7 is fixedly installed between the main handle 1 and the clamping main frame 2. The reinforcing rib 7 is used to improve the stability of the connection between the main handle 1 and the clamping main frame 2, thereby ensuring the overall strength of the structure.

[0037] Working principle:

[0038] S1. When installing and using the structure, it is necessary to tighten the connection between the structure and the insulator string and conductor;

[0039] S2. When the structure is connected to the insulator string, the threaded column 5 needs to be rotated first. In conjunction with the threaded groove on the inner side of the through shaft 4, the threaded column 5 and the push shaft 11 are moved outward. At this time, the push shaft 11 will move away from the two moving limit blocks 12. As the moving limit blocks 12 move away from the push shaft 11, in conjunction with the back push of the limit spring 15, the limit sleeve 14 and the moving limit blocks 12 are moved into the through shaft 4. This continues until the push shaft 11 is completely separated from the moving limit blocks 12. At this time, the moving limit blocks 12 are completely retracted into the through shaft 4, and the through shaft 4 is in a state where there are no protruding structures on the surface.

[0040] After adjusting the position of the movable limiting block 12 and the state of the threaded shaft 4, the insulator string can be manually pulled to place the collar on the insulator string inside the space between the main handle 1 and the auxiliary frame 3. The limiting block 10, the threaded shaft 4, and the threaded post 5 are then threaded through the main handle 1, the collar on the insulator string, and the auxiliary frame 3 to connect the insulator string to the main handle 1 and the auxiliary frame 3. After the limiting block 10, the threaded shaft 4, and the threaded post 5 are threaded through, the threaded post 5 can be rotated in the opposite direction to drive the threaded post 5 and the push shaft 11 to move in the opposite direction. The push shaft 11, relying on the circular structure at its port position, pushes the two movable limiting blocks 12 outward synchronously. The movable limiting block 12 pushed out of the threaded shaft 4 limits the auxiliary frame 3, thereby realizing the connection of the insulator string.

[0041] S3. When it is necessary to connect the structure to the conductor, first tighten the main handle 1 and the insulator string (the insulator string will fall due to gravity before installation and connection). Then place the conductor inside the two clamping blocks 9. After aligning the positions of the conductor and the clamping blocks 9, push the push frame 6 upward, causing the clamping blocks 9 and the sliding blocks 8 to rise. The rise of the sliding blocks 8 causes the two support sliders 18 and the same connecting shaft 19 to rise, causing the other sliding block 8 to rise. The simultaneous rise of the two sliding blocks 8 will cause the two clamping blocks 9 to gradually approach each other. The gradual approach of the two clamping blocks 9 can achieve the clamping and fixing of the conductor, realizing the connection between the structure and the conductor.

[0042] This utility model has the following technical advantages.

[0043] 1. This utility model can drive the push shaft 11 to move by rotating the threaded column 5. The movement of the push shaft 11 can push out the moving limit block 12, thereby changing the surface state of the through shaft 4. By changing the surface state of the through shaft 4, the through shaft 4 can be used to connect the main handle 1, the auxiliary frame 3 and the insulator string, and fix them directly after the through connection. This reduces the operation steps that traditionally require additional clamps to assist in fixing after the through connection. At the same time, the traditional auxiliary fixing structure is separate from the through structure itself. The non-integrated structure can sometimes increase the difficulty of operation for operators at height.

[0044] 2. By pushing the pusher 6 upward, the clamping block 9 and the sliding block 8 will rise together, causing the two clamping blocks 9 to gradually move closer together. The gradual approach of the two clamping blocks 9 can clamp and fix the wire, realizing the connection between the structure and the wire. This reduces the need for additional wedge blocks to tighten the wire connection required by the traditional structure, which is difficult to operate and cannot guarantee the tightening effect.

[0045] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be obvious to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An outlet type wire clamp for power transmission line, comprising a main handle (1) and a clamping main frame (2) fixedly installed on the upper end of the main handle (1), two symmetrical clamping blocks (9) are slidably connected to the inner side of the clamping main frame (2), characterized in that, An auxiliary frame (3) is fixedly installed on one side of the main handle (1). The same through shaft (4) is passed through both the main handle (1) and the auxiliary frame (3). A limiting round block (10) is fixedly installed on one end of the through shaft (4) and placed on one side of the main handle (1). A threaded column (5) is internally threaded to the other end of the through shaft (4). A push shaft (11) is fixedly installed inside the through shaft (4) on one end of the threaded column (5). Two symmetrically distributed moving limiting blocks (12) are slidably connected inside the through shaft (4). One side of each of the two moving limiting blocks (12) can contact the same push shaft (11).

2. An exit type line clamp for a power transmission line according to claim 1, characterized in that, The through shaft (4) has four symmetrically distributed grooves. Each groove has a fixed limit rod (13). The surfaces of the four limit rods (13) are slidably connected to a limit sleeve (14) fixedly installed on one side of the movable limit block (12). Each limit sleeve (14) and the groove are fixedly installed with a limit spring (15).

3. An exit type line clamp for a power transmission line according to claim 1, characterized in that, Two symmetrically distributed slide rails (16) are fixedly installed on the inner side of the clamping main frame (2). Sliding blocks (8) are slidably connected in both slide rails (16), and clamping blocks (9) are fixedly installed on one side of each of the two sliding blocks (8).

4. The export-type clamp for transmission lines according to claim 3, characterized in that, One of the clamping blocks (9) is fixedly installed with a pusher (6) on one side. Both of the sliding blocks (8) are provided with support grooves (17). Both of the support grooves (17) are slidably connected with support sliders (18). Both of the support sliders (18) are fixedly installed with the same connecting shaft (19) at their port positions.

5. The export-type clamp for transmission lines according to claim 4, characterized in that, The clamping main frame (2) has an inner groove, and a support rod (21) is fixedly installed on the inner side of the inner groove. A connecting frame (20) is slidably connected to the surface of the support rod (21) and fixedly installed on one side of the connecting shaft (19). A support spring (22) is fixedly installed between the inner groove and the connecting frame (20).

6. The export-type clamp for transmission lines according to claim 1, characterized in that, A reinforcing rib (7) is fixedly installed between the main handle (1) and the clamping main frame (2).

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