Short-circuit grounding security device for cable connecting and disconnecting head

Abstract

The utility model provides a short-circuit grounding security device for a cable disassembly and assembly head, which comprises a first clamping plate, the first clamping plate is triangular, first screw holes are formed in the corners of the first clamping plate, fastening assemblies are arranged in the first screw holes, a second clamping plate is arranged below the first clamping plate, and the first clamping plate and the second clamping plate are connected through the fastening assemblies. A second screw hole is formed in the middle of the first clamping plate, and an operating rod is arranged in the second screw hole. The short-circuit connection device can be suitable for short-circuit connection of cable wiring terminals of various models and sizes, an original wiring nose bolt can penetrate through the special-shaped hole, the bolt penetrates through the original wiring nose to conduct bolt fastening connection, and the cable wiring nose can be inserted between the clamping plate and the bolt to conduct bolt fastening connection. The clamping force formed by the fastening assembly is used for pressing each wiring nose, the operation is simple and convenient, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the electrical field and relates to a cable disassembly joint short-circuit grounding safety device. Background Art

[0002] With the development and progress of society, the importance of safe production and strict management in the field of electrical engineering have become increasingly important. The "Electric Power Safety Work Regulations" clearly require that "when repairing high-voltage motors, the three-phase short-circuited and grounded cable heads should be disassembled." However, in actual work, due to the lack of special tools, the short-circuited and grounded cable joints after disassembly are not standardized. Usually, multi-strand soft copper wires are wound around the grounding method. This method has safety hazards such as loose winding and the cross-sectional area of ​​the grounded section of the multi-strand wire does not meet the requirements. Utility Model Content

[0003] The utility model aims to provide a cable joint short-circuit grounding security device to address the problems existing in the prior art, thereby solving the problems of irregular short-circuit grounding of existing cable joints after disassembly, which often adopts a multi-strand soft copper wire winding method for grounding, resulting in safety hazards such as loose winding and the cross-sectional area of ​​the multi-strand wire grounding section not meeting the requirements.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A cable connector short-circuit grounding security device includes a first clamping plate, which is triangular in shape and has first screw holes at its corners, a fastening assembly is provided in the first screw holes, a second clamping plate is provided below the first clamping plate, and the two are connected by the fastening assembly, a second screw hole is provided in the middle of the first clamping plate, an operating rod is provided in the second screw hole, and a screw is provided at the end of the operating rod; the fastening assembly includes a screw rod, which passes through the first clamping plate and the second clamping plate in turn, and bolts are provided at the ends of the screw rods, and a compression spring is provided between the screw rod and the first clamping plate.

[0006] Furthermore, a first special-shaped hole, a second special-shaped hole and a third special-shaped hole are respectively provided on the circumferential side of the second screw hole.

[0007] Furthermore, a third screw hole is provided between the first special-shaped hole and the third special-shaped hole.

[0008] Furthermore, the operating rod is made of insulating material.

[0009] Furthermore, the second clamping plate has the same shape and size as the first clamping plate, and the only difference is that no hole is provided in the middle of the second clamping plate.

[0010] Furthermore, the first special-shaped hole includes a first semi-arc, a second semi-arc is provided on the opposite side of the first semi-arc, and the radius of the second semi-arc is smaller than the radius of the first semi-arc, and the ends of the first semi-arc and the second semi-arc are connected by a straight line.

[0011] Furthermore, the second special-shaped hole and the third special-shaped hole have the same shape and size as the first special-shaped hole.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can be applicable to the short-circuit connection of cable terminal blocks of various models and sizes. The original wiring nose bolt can be used to pass through the special-shaped hole, and the bolt can be passed through the original wiring nose for bolt fastening connection. The cable wiring nose can also be inserted between the clamping plate and the clamping force formed by the fastening component to tighten each wiring nose. The operation is simple and convenient, and the practicality is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the first special-shaped hole in the utility model.

[0017] In the figure, 1-first clamping plate, 2-first screw hole, 3-fastening assembly, 3a-screw, 3b-bolt, 4-second clamping plate, 5-second screw hole, 6-operating rod, 7-first special-shaped hole, 7a-first semi-arc, 7b-second semi-arc, 7c-straight line, 8-second special-shaped hole, 9-third special-shaped hole, 10-third screw hole, 11-ground wire. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is described below in conjunction with the accompanying drawings and implementation methods.

[0019] like Figure 1 and 2 As shown, a cable connector short-circuit grounding security device includes a first clamping plate 1, which is triangular in shape and has first screw holes 2 at its corners. A fastening assembly 3 is provided in the first screw hole 2, and a second clamping plate 4 is provided below the first clamping plate 1, and the two are connected by the fastening assembly 3; the second clamping plate 4 has the same shape and size as the first clamping plate 1, and the only difference is that no hole is provided in the middle of the second clamping plate 4.

[0020] A second screw hole 5 is provided in the middle of the first clamping plate 1, and an operating rod 6 is provided in the second screw hole 5, and a screw is provided at the end of the operating rod 6; specifically, the operating rod 6 is made of insulating material, such as insulating bakelite, and the screw at the end of the operating rod 6 is made of copper or iron material embedded in the insulating rod.

[0021] The fastening assembly 3 comprises a screw rod 3 a , which passes through the first clamping plate 1 and the second clamping plate 4 in sequence, and a bolt 3 b is arranged at each end thereof, and a compression spring 3 c is arranged between the screw rod 3 a and the first clamping plate 1 .

[0022] The second screw hole 5 is respectively provided with a first special-shaped hole 7, a second special-shaped hole 8 and a third special-shaped hole 9 on its circumferential side. In addition, a third screw hole 10 is provided between the first special-shaped hole 7 and the third special-shaped hole 9. Specifically, the third screw hole 10 is a convex bolt hole, which can increase the length of the bolt hole and increase the friction area with the operating rod 6. At the same time, it can also avoid the phenomenon that the operating rod 6 is prone to thread slippage after long-term use if the bolt hole is too short.

[0023] like Figure 3 As shown, the first special-shaped hole 7 includes a first semi-arc 7a, a second semi-arc 7b is provided on the opposite side of the first semi-arc 7a, the radius of the second semi-arc 7b is smaller than the radius of the first semi-arc 7a, and the ends of the first semi-arc 7a and the second semi-arc 7b are connected by a straight line 7c; specifically, the second special-shaped hole 8 and the third special-shaped hole 9 have the same shape and size as the first special-shaped hole 7.

[0024] The use process of the utility model is as follows:

[0025] When used for short-circuit connection of cable terminals of different sizes, the three can be inserted into the first special-shaped hole 7, the second special-shaped hole 8 and the third special-shaped hole 9 respectively. Then, the third screw hole 10 is connected to the multi-strand grounding wire 11 with a transparent sheath on the outer layer, so as to short-circuit the three-phase cable head and complete the reliable grounding of the cable end.

[0026] When used for short-circuit connection of cable terminals of the same size, first, by rotating the operating rod 6, the top of the operating rod is extended from the first clamping plate 1 and then pushes the second clamping plate 4 to create a gap between the two, so that the three-phase cable nose can be inserted between the first clamping plate 1 and the second clamping plate 4, then, the operating rod 6 is reversed to make it retreat until its top is flush with the bottom surface of the first clamping plate 1, and the three-phase cable nose is pressed between the two clamping plates through the fastening component 3, and finally, the third screw hole 10 is connected to the multi-strand grounding wire 11 with a transparent sheath on the outer layer, so that the three-phase cable head is short-circuited and the cable end is reliably grounded.

Claims

1. A cable connector short-circuit grounding safety device, characterized in that: The invention comprises a first clamping plate (1), wherein the first clamping plate (1) is triangular and has first screw holes (2) at its corners, wherein a fastening assembly (3) is arranged in the first screw holes (2), wherein a second clamping plate (4) is arranged below the first clamping plate (1), and the two are connected via the fastening assembly (3), wherein a second screw hole (5) is arranged in the middle of the first clamping plate (1), wherein an operating rod (6) is arranged in the second screw hole (5), and wherein a screw is arranged at the end thereof; wherein the fastening assembly (3) comprises a screw rod (3a), wherein the screw rod (3a) passes through the first clamping plate (1) and the second clamping plate (4) in sequence, and wherein bolts (3b) are arranged at the ends thereof, and a compression spring (3c) is arranged between the screw rod (3a) and the first clamping plate (1).

2. A cable disconnect connector short-circuit grounding safety device according to claim 1, characterized in that: A first special-shaped hole (7), a second special-shaped hole (8) and a third special-shaped hole (9) are respectively provided on the circumferential side of the second screw hole (5).

3. A cable disconnect connector short-circuit grounding safety device according to claim 2, characterized in that: A third screw hole (10) is provided between the first special-shaped hole (7) and the third special-shaped hole (9).

4. A cable connector short-circuit grounding safety device according to claim 1, characterized in that: The operating rod (6) is made of insulating material.

5. A cable disconnect connector short-circuit grounding safety device according to claim 1, characterized in that: The second clamping plate (4) has the same shape and size as the first clamping plate (1), the only difference being that no hole is provided in the middle of the second clamping plate (4).

6. A cable disconnect connector short-circuit grounding safety device according to claim 2, characterized in that: The first special-shaped hole (7) comprises a first semi-arc (7a), a second semi-arc (7b) is provided on the opposite side of the first semi-arc (7a), the radius of the second semi-arc (7b) is smaller than the radius of the first semi-arc (7a), and the ends of the first semi-arc (7a) and the second semi-arc (7b) are connected by a straight line (7c).

7. A cable disconnect connector short-circuit grounding safety device according to claim 6, characterized in that: The second special-shaped hole (8) and the third special-shaped hole (9) have the same shape and size as the first special-shaped hole (7).

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