Connecting wire clips

Abstract

This utility model relates to a jumper clamp, comprising a C-shaped clamp body, an internal clamping block, and a vertical stud connected to the lower end of the clamping block. The stud penetrates the clamp body and is threaded into it. A lower clamping cavity is provided on the upper surface of the clamping block, with lower clamping plates at both ends of the lower clamping cavity and a positioning opening at the upper end of the lower clamping plates. A positioning block is provided on the clamp body above the clamping block, with an upper clamping cavity on its lower surface. An upper clamping plate is provided at both ends of the upper clamping cavity, and a semi-circular upper positioning opening at the lower end of the upper clamping plate. The lower and upper clamping cavities can form a conductive clamping cavity, the inner wall of which is provided with a conductive paste layer. This utility model, by providing a conductive paste layer within the conductive clamping cavity, fills the gap between the high-voltage transmission line and the inner wall of the conductive clamping cavity, reducing the contact resistance between the high-voltage transmission line and the inner wall of the conductive clamping cavity, improving conductivity stability, and preventing hazards such as localized overheating and arc corrosion.

Description

Technical Field

[0001] This utility model belongs to the field of jumper technology, and in particular, it is a jumper wire clamp. Background Technology

[0002] During the construction of various power facilities, temporary power supply to equipment is often required via jump-starting. Currently, jump-starting clamps are commonly used to connect to high-voltage transmission lines. These clamps typically consist of a C-shaped clamping body with a clamping block inside. The clamping block slides vertically against the clamping body, and a screw is attached to the clamping block, which engages with the threaded part of the clamping body. During jump-starting, the upper part of the clamping body hooks onto the high-voltage transmission line, and then the screw is rotated to push the clamping body upwards, clamping it tightly against the high-voltage transmission line. For details, refer to patents such as CN201620609288.7 (A novel jump-starting clamp), CN202011102263.5 (A jump-starting clamp), and CN202120536264.4 (A jump-starting clamp).

[0003] Since high-voltage transmission lines are mostly made of steel-cored aluminum stranded wire, which consists of multiple aluminum wires wound around the outer layer of a steel core, there are tiny gaps between the aluminum wire strands, and the whole structure presents a spiral pattern. The surface is not smooth. After the existing grounding clamps are installed, they are difficult to fully fit with the surface of the high-voltage transmission line, resulting in high contact resistance. This can easily lead to the grounding clamps overheating and causing electric arc corrosion and other hazards. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a jumper clamp that can reduce the contact resistance between the jumper clamp and the high-voltage transmission line.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a jumper clamp, including a C-shaped clamp body, a terminal block provided on the clamp body, a clamp block provided inside the clamp body, the clamp block and the clamp body slidingly engaging in the vertical direction, and a vertical stud connected to the lower end of the clamp block, the stud penetrating the clamp body and engaging with the clamp body threadedly.

[0006] The upper surface of the clamping block is provided with a lower clamping cavity, and the two ends of the lower clamping cavity are provided with lower clamping plates. The upper end of the lower clamping plate is provided with a semi-circular lower positioning port.

[0007] A positioning block is provided on the clamping body above the clamping block. An upper clamping cavity is provided on the lower surface of the positioning block. Upper clamping plates are provided at both ends of the upper clamping cavity. A semi-circular upper positioning opening is provided at the lower end of the upper clamping plate.

[0008] The lower clamping cavity and the upper clamping cavity can form a conductive clamping cavity, and the inner wall of the conductive clamping cavity is provided with a conductive paste layer; the lower positioning port and the upper positioning port can form a circular empty hole.

[0009] Furthermore, the upper end of the stud is rotatably engaged with the clamping block.

[0010] Furthermore, the inner wall of the clamp is provided with a dovetail-shaped groove, and the side wall of the clamp block is provided with a dovetail-shaped slider, the slider slidingly engaging with the groove.

[0011] Furthermore, a rotating handle is provided at the lower end of the stud.

[0012] Furthermore, the cross-sections of the lower clamping cavity and the upper clamping cavity are both semi-circular, and the radii of the lower clamping cavity and the upper clamping cavity are greater than the radii of the lower positioning port and the upper positioning port.

[0013] The beneficial effects of this utility model are as follows: By setting a conductive paste layer inside the conductive clamping cavity, the conductive paste layer can fill the gap between the high-voltage transmission line and the inner wall of the conductive clamping cavity, reduce the contact resistance between the high-voltage transmission line and the inner wall of the conductive clamping cavity, improve the stability of conductivity, and prevent hazards such as local overheating and arc corrosion. Attached Figure Description

[0014] Figure 1 This is a front sectional view of the present invention;

[0015] Figure 2 yes Figure 1 Schematic diagram of the cross section of AA;

[0016] Figure 3 yes Figure 1 Cross-sectional view of BB;

[0017] Figure 4 This is a diagram showing the result after the fire is started;

[0018] Reference numerals in the attached drawings: 1—clamp body; 2—terminal; 3—clamp block; 31—slider; 4—stud; 41—rotating handle; 5—lower clamping cavity; 6—lower clamping plate; 7—lower positioning port; 8—positioning block; 9—upper clamping cavity; 10—upper clamping plate; 11—upper positioning port; 12—conductive paste layer. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] The jumper clip of this utility model, such as Figures 1 to 3As shown, the device includes a C-shaped clamp 1 with a terminal 2 for connecting to a jumper wire. The terminal 2 can be a threaded post, which can be welded to the clamp 1. Inside the clamp 1 is a clamping block 3, which slides vertically with the clamp 1. The lower end of the clamping block 3 is connected to a vertical stud 4, which penetrates the clamp 1 and is threaded into it. Rotating the stud 4 causes it to move up and down, thus moving the clamping block 3 up and down. Specifically, the upper end of the stud 4 rotates with the clamping block 3. The upper end of the stud 4 can be connected to the clamping block 3 via a bearing. Rotating the stud 4 does not cause the clamping block 3 to rotate; instead, it causes the clamping block 3 to move linearly up and down.

[0021] The upper surface of the clamping block 3 is provided with a lower clamping cavity 5, and the two ends of the lower clamping cavity 5 are provided with lower clamping plates 6. The upper end of the lower clamping plate 6 is provided with a semi-circular lower positioning port 7. The cross-sectional area of ​​the lower clamping cavity 5 is slightly larger than the cross-sectional area of ​​the lower positioning port 7.

[0022] A positioning block 8 is provided on the clamping body 1 above the clamping block 3. The positioning block 8 can be integrally formed with the clamping body 1. An upper clamping cavity 9 is provided on the lower surface of the positioning block 8. An upper clamping plate 10 is provided at both ends of the upper clamping cavity 9. A semi-circular upper positioning opening 11 is provided at the lower end of the upper clamping plate 10. The cross-sectional area of ​​the upper clamping cavity 9 is slightly larger than the cross-sectional area of ​​the upper positioning opening 11.

[0023] The lower clamping cavity 5 and the upper clamping cavity 9 can form a conductive clamping cavity, and a conductive paste layer 12 is provided on the inner wall of the conductive clamping cavity; the lower positioning port 7 and the upper positioning port 11 can form a circular empty hole.

[0024] When the stud 4 pushes the clamping block 3 upward to contact the positioning block 8, the lower clamping cavity 5 and the upper clamping cavity 9 form a conductive clamping cavity. At the same time, the lower positioning port 7 and the upper positioning port 11 can form a circular empty hole, the diameter of which is the same as the diameter of the high-voltage transmission line.

[0025] In use, conductive paste is first applied to the inner walls of the lower clamping cavity 5 and the upper clamping cavity 9, forming a conductive paste layer 12 on the inner walls of the lower clamping cavity 5 and the upper clamping cavity 9. The amount of conductive paste applied should be sufficient to ensure that it completely fills the space between the inner wall of the conductive clamping cavity and the high-voltage transmission line. After applying the conductive paste, the positioning block 8 on the upper part of the clamp 1 can be attached to the high-voltage transmission line, so that the high-voltage transmission line is located in the upper clamping cavity 9 and the upper positioning port 11. Then, the stud 4 is rotated to push the clamping block 3 upward until the clamping block 3 presses against the positioning block 8. Figure 4 As shown.

[0026] By providing lower clamping plates 6 at both ends of the lower clamping cavity 5 and upper clamping plates 10 at both ends of the upper clamping cavity 9, the lower clamping plates 6 and upper clamping plates 10 serve to prevent conductive paste from overflowing from the two ends of the lower clamping cavity 5 and the upper clamping cavity 9, ensuring that the conductive paste can fully fill the space between the high-voltage transmission line and the inner wall of the conductive clamping cavity.

[0027] In this invention, all components are made of materials with excellent electrical conductivity.

[0028] To ensure stable up-and-down movement of the clamping block 3, a dovetail-shaped groove is provided on the inner wall of the clamping body 1, and a dovetail-shaped slider 31 is provided on the side wall of the clamping block 3. The slider 31 slides in conjunction with the groove. The dovetail groove serves to guide and position, ensuring the stability of the movement of the clamping block 3.

[0029] The lower end of the stud 4 is equipped with a rotating handle 41. By rotating the rotating handle 41, the stud 4 can be rotated, making operation easier. The stud 4 with the rotating handle 41 can be directly made of screw.

[0030] The cross-sections of the lower clamping cavity 5 and the upper clamping cavity 9 can be rectangular. In a preferred embodiment, the cross-sections of the lower clamping cavity 5 and the upper clamping cavity 9 are both semi-circular, and the radii of the lower clamping cavity 5 and the upper clamping cavity 9 are greater than the radii of the lower positioning port 7 and the upper positioning port 11.

[0031] This invention provides a conductive paste layer 12 on the inner wall of the conductive clamping cavity. The conductive paste layer 12 has excellent conductivity, which can effectively reduce the contact resistance between the inner wall of the conductive clamping cavity and the high-voltage transmission line. The lower clamping plate 6 and the upper clamping plate 10 are provided at both ends of the conductive clamping cavity to promote the uniform and sufficient filling of the conductive paste into the gap between the inner wall of the conductive clamping cavity and the high-voltage transmission line, thus ensuring the stability and effectiveness of conductivity.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A jumper clamp, comprising a C-shaped clamp body (1), wherein a terminal post (2) is provided on the clamp body (1), and a clamping block (3) is provided inside the clamp body (1), wherein the clamping block (3) slides with the clamp body (1) in the vertical direction, and a vertical stud (4) is connected to the lower end of the clamping block (3), wherein the stud (4) penetrates the clamp body (1) and is threadedly engaged with the clamp body (1); characterized in that: The upper surface of the clamping block (3) is provided with a lower clamping cavity (5), and the two ends of the lower clamping cavity (5) are provided with a lower clamping plate (6). The upper end of the lower clamping plate (6) is provided with a semi-circular lower positioning port (7). A positioning block (8) is provided on the clamping body (1) above the clamping block (3). An upper clamping cavity (9) is provided on the lower surface of the positioning block (8). An upper clamping plate (10) is provided at both ends of the upper clamping cavity (9). A semi-circular upper positioning port (11) is provided at the lower end of the upper clamping plate (10). The lower clamping cavity (5) and the upper clamping cavity (9) can form a conductive clamping cavity, and a conductive paste layer (12) is provided on the inner wall of the conductive clamping cavity; the lower positioning port (7) and the upper positioning port (11) can form a circular empty hole.

2. The jumper clamp as described in claim 1, characterized in that: The upper end of the stud (4) is rotatably engaged with the clamp (3).

3. The jumper clamp as described in claim 1, characterized in that: The inner wall of the clamp (1) is provided with a dovetail-shaped groove, and the side wall of the clamp (3) is provided with a dovetail-shaped slider (31), which slides in conjunction with the groove.

4. The jumper clamp as described in claim 1, characterized in that: The lower end of the stud (4) is provided with a rotating handle (41).

5. The jumper clamp as described in claim 1, characterized in that: The cross-sections of the lower clamping cavity (5) and the upper clamping cavity (9) are both semi-circular, and the radii of the lower clamping cavity (5) and the upper clamping cavity (9) are greater than the radii of the lower positioning port (7) and the upper positioning port (11).

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