Spring compression protection connecting piece

Abstract

The utility model relates to the technical field of protection circuits, in particular to a spring compression protection connecting piece, which comprises a base, a first screw and a second screw, the base is U-shaped, the left part of the base is provided with a vertically through first through hole, the first screw is screwed in the first through hole, and the upper end of the first screw penetrates out of the upper end of the first through hole. The device is simple in structure and convenient to use, during use, two external wires are wound on the lower portion of the first screw and the lower portion of the second screw respectively and clamped through the clamping assembly, the right portion of the connecting piece is poked forwards to enable the second screw to be sleeved with the connecting groove, at the moment, the first screw, the connecting piece and the second screw form a conductive loop, and the right portion of the connecting piece is poked backwards to enable the second screw to be sleeved with the connecting groove. The second threaded rod is not sleeved with the connecting groove any more, a loop is disconnected, connection and disconnection operation of the spring pressing protection connecting piece can be conveniently achieved by shifting the connecting piece front and back, and the problem that connection and disconnection operation of an existing protection pressing plate is tedious can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of protection circuits and is a spring-compressed protection connecting piece. Background Art

[0002] In the protection circuit of medium and high voltage power distribution equipment, protection connecting pieces, also known as protection pressure plates, are often used to realize the activation and deactivation of protection functions. In the existing protection pressure plate operation process, it is usually necessary to complete the task of conducting and disconnecting the circuit by rotating the loosening nut. This operation method is not only cumbersome, but also during the operation, the staff face a high risk of electric shock. Especially in high voltage environments, safety accidents may occur if the operation is not careful. In addition, due to the limitation of human factors, it is easy for the staff to forget to tighten the nut after use, causing the nut to gradually loosen over time, and then causing the protection pressure plate to slip. It is not only easy to affect the normal operation of the protection circuit, but also may cause circuit failure, posing a threat to the safety of equipment and personnel. Summary of the invention

[0003] The utility model provides a spring-compressed protection connecting piece, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem of complicated on and off operations of the existing protection pressure plate.

[0004] The technical scheme of the utility model is realized by the following measures: a spring compression protection connecting piece comprises a base, a first screw and a second screw, the base is in a U-shape, a first through hole extending vertically is opened on the left part of the base, a first screw is screwed in the first through hole, an upper end of the first screw passes through the upper end of the first through hole, and a lower end of the first screw passes through the lower end of the first through hole, a second through hole extending vertically is opened on the right part of the base, a second screw symmetrically arranged with the first screw is screwed in the second through hole, a first clamping assembly for clamping an external wire is screwed in the lower part of the first screw, a second clamping assembly is screwed in the lower part of the second screw, and the second clamping assembly is connected to the first clamping assembly The structure is consistent, a connecting piece is provided between the upper part of the first screw and the upper part of the second screw, the left end of the connecting piece is mounted on the upper part of the first screw, and a connecting groove which runs through from top to bottom is opened on the rear side of the right part of the connecting piece, the upper part of the first screw corresponding to the position between the connecting piece and the base is equipped with a first supporting mechanism capable of supporting the connecting piece, the upper part of the second screw is equipped with a second supporting mechanism, the second supporting mechanism has the same structure as the first supporting mechanism and is symmetrically distributed, the upper part of the first screw corresponding to the position above the connecting piece is equipped with a first adjusting mechanism capable of pressing the connecting piece downward, the upper part of the second screw is equipped with a second adjusting mechanism, the second adjusting mechanism has the same structure as the first adjusting mechanism and is symmetrically distributed.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] The above-mentioned first supporting mechanism may include an insulating tube, a spring and a first pressing plate. The first pressing plate is in a truncated cone shape. The upper part of the first screw corresponding to the position between the base and the connecting plate is provided with the insulating tube and the first pressing plate from bottom to top. A spring is connected between the first pressing plate and the insulating tube.

[0007] The above-mentioned first adjustment mechanism may include an insulating nut, an adjusting nut and a second pressing plate. The second pressing plate has a structure consistent with the first pressing plate and is symmetrically distributed. The upper part of the first screw is screwed with an insulating nut and an adjusting nut in sequence from top to bottom. The second pressing plate is mounted on the outside of the first screw between the connecting plate and the adjusting nut.

[0008] The above-mentioned first clamping assembly may include a first nut, a second nut and a washer. The first nut and the second nut are screwed together in sequence on the lower part of the first screw from top to bottom. A spring washer is mounted on the outside of the first screw corresponding to the position between the first nut and the second nut. At least two flat washers are mounted on the outside of the first screw corresponding to the position between the spring washer and the first nut.

[0009] The above may also include an insulating ring and an insulating handle. The middle part of the connecting piece is sleeved with the insulating ring, and the upper end of the insulating ring is fixedly mounted with the insulating handle.

[0010] The utility model has a reasonable and compact structure and is easy to use. The first supporting mechanism and the first adjusting mechanism cooperate to limit the left part of the connecting piece, and the second supporting mechanism and the second adjusting mechanism cooperate to limit the right part of the connecting piece. The left end of the connecting piece is sleeved on the upper part of the first screw rod, so that the connecting piece can be moved forward and backward. When in use, two external wires are respectively wound around the lower part of the first screw and the lower part of the second screw and clamped through the clamping assembly, and the right part of the connecting piece is pushed forward so that the second screw is sleeved in the connecting groove. At this time, the first screw, the connecting piece and the second screw form a conductive loop, and the right part of the connecting piece is pushed backward so that the second screw is no longer sleeved in the connecting groove, and the loop is disconnected. By moving the connecting piece forward and backward, the conductive and disconnecting operations of the spring-compressed protective connecting piece can be conveniently realized, which can effectively solve the problem of complicated conductive and disconnecting operations existing in the existing protection pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a schematic diagram of the main structure of the first embodiment.

[0012] Attached Figure 2 It is a schematic diagram of the top view of the structure after the connecting piece in Example 1 is moved forward.

[0013] Attached Figure 3 It is a schematic diagram of the top view of the structure after the connecting piece in Example 1 is moved backward.

[0014] The codes in the accompanying drawings are: 1 is the base, 2 is the first screw, 3 is the second screw, 4 is the connecting plate, 5 is the connecting groove, 6 is the insulating tube, 7 is the spring, 8 is the first pressing plate, 9 is the insulating nut, 10 is the adjusting nut, 11 is the second pressing plate, 12 is the first nut, 13 is the second nut, 14 is the flat washer, 15 is the spring washer, 16 is the insulating collar, and 17 is the insulating handle. DETAILED DESCRIPTION

[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0016] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0017] The present invention is further described below in conjunction with the embodiments and drawings:

[0018] Embodiment 1, as attached Figure 1 , 2 As shown in Figure 3, the spring compression protection connecting piece includes a base 1, a first screw rod 2 and a second screw rod 3. The base 1 is in a U-shape. A first through hole extending vertically is opened on the left side of the base 1. The first screw rod 2 is screwed in the first through hole. The upper end of the first screw 2 passes through the upper end of the first through hole, and the lower end of the first screw 2 passes through the lower end of the first through hole. A second through hole extending vertically is opened on the right side of the base 1. A second screw rod 3 symmetrically arranged with the first screw 2 is screwed in the second through hole. A first clamping assembly for clamping an external wire is screwed in the lower part of the first screw 2. A second clamping assembly is screwed in the lower part of the second screw 3. The second clamping assembly has the same structure as the first clamping assembly. The upper part of the first screw 2 A connecting piece 4 is provided between the upper part of the first screw rod and the second screw rod, the left end of the connecting piece 4 is mounted on the upper part of the first screw rod 2, and a connecting groove 5 which runs through the upper and lower parts is provided on the rear side of the right part of the connecting piece 4. The upper part of the first screw rod 2 corresponding to the position between the connecting piece 4 and the base 1 is mounted with a first supporting mechanism capable of supporting the connecting piece 4, and the upper part of the second screw rod 3 is mounted with a second supporting mechanism, and the second supporting mechanism has the same structure as the first supporting mechanism and is symmetrically distributed. The upper part of the first screw rod 2 corresponding to the position above the connecting piece 4 is mounted with a first adjusting mechanism capable of pressing the connecting piece 4 downward, and the upper part of the second screw rod 3 is mounted with a second adjusting mechanism, and the second adjusting mechanism has the same structure as the first adjusting mechanism and is symmetrically distributed.

[0019] The base 1 is made of insulating material. In this embodiment, the first supporting mechanism and the first adjusting mechanism cooperate to limit the left part of the connecting piece 4, and the second supporting mechanism and the second adjusting mechanism cooperate to limit the right part of the connecting piece 4. The left end of the connecting piece 4 is sleeved on the upper part of the first screw 2, so that the connecting piece 4 can be moved forward and backward. When in use, two external wires are respectively wound around the lower part of the first screw 2 and the lower part of the second screw 3 and clamped by the first clamping assembly and the second clamping assembly respectively. The right part of the connecting piece 4 is pushed forward so that the second screw 3 is sleeved in the connecting groove 5. At this time, the first screw 2, the connecting piece 4 and the second screw 3 form a conductive loop. The right part of the connecting piece 4 is pushed backward so that the second screw 3 is no longer sleeved in the connecting groove 5, and the loop is disconnected. By moving the connecting piece 4 back and forth, the conductive and disconnecting operations of the spring-compressed protective connecting piece can be conveniently realized, which can effectively solve the problem of cumbersome conductive and disconnecting operations existing in the existing protective pressure plate.

[0020] The above-mentioned spring compression protection link can be further optimized and / or improved according to actual needs:

[0021] Embodiment 2, as attached Figure 1 As shown, this embodiment is a further optimization of the above embodiment. The first supporting mechanism includes an insulating tube 6, a spring 7 and a first pressing plate 8. The first pressing plate 8 is in a truncated cone shape. The insulating tube 6 and the first pressing plate 8 are spaced from bottom to top on the upper part of the first screw 2 corresponding to the position between the base 1 and the connecting plate 4. A spring 7 is connected between the first pressing plate 8 and the insulating tube 6.

[0022] In this embodiment, an insulating tube 6 is provided to increase the distance between the first clamping assembly, the second clamping assembly and the connecting piece 4, thereby preventing the staff from accidentally touching the connecting piece 4 when winding the external wire in the first clamping assembly or the second clamping assembly. A spring 7 is connected between the first pressing piece 8 and the insulating tube 6, thereby providing a buffer when the connecting piece 4 is pressed, thereby preventing the connecting piece 4 from being pressed too loosely or too tightly. Specifically, when it is necessary to clamp the left part of the connecting piece 4, the left part of the connecting piece 4 is pressed downward by the first adjusting mechanism, and the left part of the connecting piece 4 moves downward and presses the first pressing piece 8. The first pressing piece 8 moves downward and presses the spring 7 to compress the spring 7. After being compressed, the spring 7 continuously applies elastic force upward, so that the left part of the connecting piece 4 is clamped between the adjusting structure and the first pressing piece 8. The elastic characteristics of the spring 7 enable the first pressing piece 8 to have space to continue to move downward while clamping the left part of the connecting piece 4, thereby effectively preventing the connecting piece 4 from being clamped too tightly and becoming difficult to move.

[0023] Embodiment 3, as attached Figure 1 , 2As shown in Figures 3 and 4, this embodiment is a further optimization of the above embodiment. The first adjustment mechanism includes an insulating nut 9, an adjusting nut 10 and a second pressing plate 11. The second pressing plate 11 is consistent with the first pressing plate 8 in structure and symmetrically distributed. The insulating nut 9 and the adjusting nut 10 are screwed to the upper part of the first screw 2 from top to bottom in sequence. The second pressing plate 11 is sleeved on the outer side of the first screw 2 between the connecting plate 4 and the adjusting nut 10. The insulating nut 9 is screwed to the upper part of the first screw 2 to prevent the staff from accidentally touching the upper part of the first screw 2 and causing electric shock when the spring compression protection connecting plate is turned on. When in use, the adjusting nut 10 is rotated to move the adjusting nut 10 downward and press the second pressing plate 11, so that the second pressing plate 11 cooperates with the first pressing plate 8 and the spring 7 to clamp the connecting plate 4.

[0024] Embodiment 4, as attached Figure 1 As shown, this embodiment is a further optimization of the above embodiment, the first clamping assembly includes a first nut 12, a second nut 13 and a gasket, the first screw rod 2 is screwed with the first nut 12 and the second nut 13 in sequence from top to bottom, the outer side of the first screw rod 2 corresponding to the position between the first nut 12 and the second nut 13 is provided with a spring gasket 15, and the outer side of the first screw rod 2 corresponding to the position between the spring gasket 15 and the first nut 12 is provided with at least two flat gaskets 14. When in use, the external wire is wound between adjacent flat gaskets 14 and clamped by the first nut 12 and the second nut 13, which can effectively prevent the wire from falling. In this embodiment, the spring gasket 15 is provided, and the spring gasket 15 can provide elastic compensation, so that the adjacent flat gaskets 14 can clamp the external wire more evenly and stably.

[0025] Embodiment 5, as attached Figure 1 , 2 As shown in FIG. 3 , this embodiment is a further optimization of the above embodiment, and further includes an insulating collar 16 and an insulating handle 17. The middle of the connecting piece 4 is provided with an insulating collar 16, and the upper end of the insulating collar 16 is fixedly provided with an insulating handle 17. In this embodiment, the insulating collar 16 and the insulating handle 17 are provided to facilitate the staff to move the connecting piece.

[0026] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A spring-loaded protective link, characterized in that The invention comprises a base, a first screw and a second screw. The base is in a U-shape. A first through hole extending vertically is provided on the left part of the base. A first screw is screwed in the first through hole. The upper end of the first screw passes through the upper end of the first through hole, and the lower end of the first screw passes through the lower end of the first through hole. A second through hole extending vertically is provided on the right part of the base. A second screw symmetrically arranged with the first screw is screwed in the second through hole. A first clamping assembly for clamping an external wire is screwed in the lower part of the first screw. A second clamping assembly is screwed in the lower part of the second screw. The second clamping assembly has the same structure as the first clamping assembly. The upper part of the first screw and the upper part of the second screw A connecting piece is provided in between, the left end of the connecting piece is mounted on the upper part of the first screw, and a connecting groove which runs through the upper and lower parts is opened on the rear side of the right part of the connecting piece. The upper part of the first screw corresponding to the position between the connecting piece and the base is equipped with a first supporting mechanism capable of supporting the connecting piece, and the upper part of the second screw is equipped with a second supporting mechanism. The second supporting mechanism has the same structure as the first supporting mechanism and is symmetrically distributed. The upper part of the first screw corresponding to the position above the connecting piece is equipped with a first adjusting mechanism capable of pressing the connecting piece downward, and the upper part of the second screw is equipped with a second adjusting mechanism. The second adjusting mechanism has the same structure as the first adjusting mechanism and is symmetrically distributed.

2. The spring compression protection connecting piece according to claim 1 is characterized in that The first supporting mechanism includes an insulating tube, a spring and a first pressing plate. The first pressing plate is in a truncated cone shape. The upper part of the first screw rod corresponding to the position between the base and the connecting plate is provided with the insulating tube and the first pressing plate from bottom to top. A spring is connected between the first pressing plate and the insulating tube.

3. The spring compression protection connecting piece according to claim 2 is characterized in that The first adjustment mechanism includes an insulating nut, an adjusting nut and a second pressing plate. The second pressing plate has a structure consistent with the first pressing plate and is symmetrically distributed. The insulating nut and the adjusting nut are screwed onto the upper part of the first screw from top to bottom in sequence. The second pressing plate is mounted on the outer side of the first screw between the connecting plate and the adjusting nut.

4. The spring compression protection connecting piece according to claim 1, 2 or 3, characterized in that The first clamping assembly includes a first nut, a second nut and a gasket. The first nut and the second nut are screwed together in sequence on the lower part of the first screw from top to bottom. A spring gasket is mounted on the outer side of the first screw corresponding to the position between the first nut and the second nut. At least two flat gaskets are mounted on the outer side of the first screw corresponding to the position between the spring gasket and the first nut.

5. The spring compression protection connecting piece according to claim 1, 2 or 3, characterized in that It also includes an insulating sleeve and an insulating handle. The middle part of the connecting piece is sleeved with the insulating sleeve, and the upper end of the insulating sleeve is fixedly installed with the insulating handle.

6. The spring compression protection connecting piece according to claim 4, characterized in that It also includes an insulating sleeve and an insulating handle. The middle part of the connecting piece is sleeved with the insulating sleeve, and the upper end of the insulating sleeve is fixedly installed with the insulating handle.

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