Pipe bus expansion clamp

Abstract

The utility model relates to the technical field of wire clamp, specifically disclose a pipe bus telescopic wire clamp, including gland and base, the base includes the butt block, the gland can clamp the end part of pipe bus after with butt block connection, the base still includes with butt block fixed connection's first plug board, and the first plug board is connected with the one end of current wire, and the wire clamp still includes current lead -out portion, and the current lead -out portion includes fixed connection's flow guide plate and second plug board, and the other end of current wire is connected with second plug board, and the first plug board is connected with second plug board through telescopic component between, and telescopic component includes the slot and the plug, and the plug can insert the slot, and the plug can slide along the length direction of slot. Telescopic component telescopic can change the distance of gland, base and current lead -out portion, and compensate to circuit telescopic.

Description

Technical Field

[0001] This utility model relates to the field of wire clamp technology, specifically a retractable wire clamp for a busbar. Background Technology

[0002] Busbar telescopic clamps are important circuit connection accessories in power systems. Their main function is to connect and fix busbars, providing stable mechanical support and ensuring the safe and reliable operation of the circuit system. MGS or MGSG type busbar telescopic clamps are commonly used telescopic clamps. During power transmission, current generates heat when passing through conductors, causing the conductive metal material to expand or contract. Busbar telescopic clamps have a certain degree of flexibility, which can compensate for the expansion and contraction of the circuit caused by thermal expansion and contraction within a certain range, avoiding mechanical stress damage caused by temperature changes. Existing busbar telescopic clamps mainly consist of a clamp body, current conductors, and a current guide plate. The clamp body clamps and fixes the busbar. The two ends of the current conductors are connected to the clamp body and the current guide plate, respectively. Current is conducted through the clamp body, current conductors, and current guide plate. To enable the clamp to expand and contract, the clamp body and the current guide plate are connected by an I-beam. The two ends of the I-beam are hinged to the clamp body and the current guide plate, respectively. When the circuit expands and contracts due to heat, the hinges at both ends of the I-beam can rotate, causing the relative positions of the clamp body and the current guide plate to shift, thereby compensating for thermal expansion and contraction. The current conductors will twist to a certain extent. The clamp body and the current guide plate cannot compensate for the expansion and contraction caused by thermal expansion and contraction of the circuit by directly moving closer or further away. Utility Model Content

[0003] This utility model addresses the problem of existing busbar telescopic clamps compensating for thermal expansion and contraction by misaligning the clamp body and the guide plate. It provides a busbar telescopic clamp in which the conductive components on both sides of the current conductor can move closer or further away to compensate for the thermal expansion and contraction of the circuit.

[0004] To solve the above-mentioned technical problems, this utility model includes a pressure cap and a base. The base includes a receiving block. The pressure cap and the receiving block are connected by a bolt and nut combination, and the connection between the pressure cap and the receiving block can clamp the end of the busbar. The base also includes a first plug plate fixedly connected to the receiving block. The first plug plate is connected to one end of at least one current conductor. The clamp also includes a current lead-out part. The current lead-out part includes a current guide plate and a second plug plate fixedly connected. The other end of the current conductor is connected to the second plug plate. Its structural feature is that the first plug plate and the second plug plate are connected by a telescopic component. The telescopic component includes a slot and a plug. The plug can be inserted into the slot and can slide along the length direction of the slot.

[0005] With the above structure, when the wire clamp is used to connect the busbar, the busbar is placed between the pressure cap and the receiving block. The pressure cap and the receiving block are connected by a combination of bolts and nuts, and the end of the busbar is clamped. The current of the busbar is conducted through the receiving block, the first plug plate, the current conductor, the second plug plate, and the current guide plate. The first plug plate is the base, and the second plug plate and the current guide plate are the current lead-out parts. The first plug plate and the second plug plate are connected by a telescopic assembly. The plug in the telescopic assembly is inserted into the slot. The plug can slide along the length of the slot. When the conductor expands or contracts due to conductivity or other reasons, the plug can slide along the length of the slot, causing the first plug plate to move closer to or away from the second plug plate. That is, the pressure cap and the base move closer to or away from the current lead-out part, thereby compensating for the expansion and contraction of the circuit and ensuring the safe and stable operation of the circuit. In this utility model, the current conductor has a cover and base on one side to clamp the busbar, and a current lead-out part on the other side. The conductive components on both sides of the current conductor can move closer or further apart through the telescopic assembly to compensate for the expansion and contraction of the circuit caused by thermal expansion and contraction.

[0006] One end of the slot is provided with a sliding groove into which a plug can be inserted. The sliding groove is formed by two parallel side connecting plates and is connected to the outside. One end of the plug is hinged to the side connecting plate and can slide along the length of the side connecting plate. The other end of the plug is hinged to the first or second socket plate.

[0007] When the plug is hinged to the first socket plate, the end of the slot away from the slide is hinged to the second socket plate; when the plug is hinged to the second socket plate, the end of the slot away from the slide is hinged to the first socket plate.

[0008] Both side connecting plates are provided with corresponding elongated holes. The length direction of the elongated holes is the same as that of the side connecting plates. One end of the insert block is provided with a through hole. The slot and the insert block are hinged by a connecting pin that passes through the elongated hole and the through hole. The connecting pin can slide along the elongated hole.

[0009] The current conductor has two or more wires.

[0010] This utility model relates to a telescopic busbar clamp. The end of the busbar is clamped by a cap and a base. The two ends of the current conductor are connected to the base and the current lead-out part, respectively. The base and the current lead-out part are connected by a telescopic assembly, which includes a slot and a plug. The base and the current lead-out part are respectively hinged to the slot or the plug. The plug is inserted into the groove of the slot and can slide along the length of the groove. The plug is hinged to the side connecting plates on both sides of the groove. With the above design, when the telescopic busbar clamp compensates for the expansion and contraction of the circuit, the plug can either slide along the slot for compensation or the hinged part between the plug and the slot can bulge outward for compensation. Both compensation methods can occur simultaneously, causing the cap and base to move closer to or further away from the current lead-out part, rather than compensating by misalignment between the cap and base and the current lead-out part. The compensation method of this utility model of the telescopic busbar clamp causes less twisting of the current conductor. Attached Figure Description

[0011] Figure 1 This is a plan view of the busbar telescopic clamp of this utility model;

[0012] Figure 2 for Figure 1 View from direction A;

[0013] Figure 3 for Figure 1 BB cross-sectional diagram;

[0014] Figure 4 for Figure 3 Enlarged view of point C;

[0015] Figure 5 for Figure 3 DD cross-sectional schematic diagram;

[0016] Figure 6 This is a schematic diagram showing the disassembled parts of the busbar telescopic clamp.

[0017] Figure 7 (a) is a plan view of the cap. Figure 7 (b) is Figure 7 (a) View from direction E, Figure 7 (c) is Figure 7 (a) Schematic diagram of the FF cross section;

[0018] Figure 8 (a) is a side view of the base. Figure 8 (b) is Figure 8 (a) G-direction view, Figure 8 (c) is Figure 8 (a) Schematic diagram of the HH cross section;

[0019] Figure 9 (a) is a plan view of the slot. Figure 9 (b) is Figure 9 (a) View from direction I;

[0020] Figure 10 (a) is a planar schematic diagram of the insert block. Figure 10 (b) is Figure 10 (a) J-direction view;

[0021] Figure 11 (a) is a plan view of the current lead-out section. Figure 11 (b) is Figure 11 (a) K-direction view;

[0022] Figure 12 (a) is a schematic diagram showing the insertion block moving a certain distance closer to the busbar (and) Figure 1 compared to), Figure 12 (b) is a schematic diagram showing the insert protruding a certain distance towards the busbar, with the hinge point between the insert and the slot protruding outwards (as opposed to...). Figure 1 compared to);

[0023] In the diagram: 1. Pressure cap; 11. First groove; 111. First through hole; 2. Base; 21. Receiving block; 211. Second groove; 212. Second through hole; 22. Baffle; 23. First connector plate; 231. First wire insertion hole; 24. Connector; 241. Third through hole; 3. Current conductor; 4. Telescopic assembly; 41. Slot; 411. Side connecting plate; 412. Connecting wall; 413. Elongated hole; 414. First limiting groove; 415. Sliding groove; 416. Fourth through hole; 42. Insert block; 421. Fifth through hole; 422. Sixth through hole; 5. Current lead-out section; 51. Guide plate; 52. Second connector plate; 521. Second wire insertion hole; 53. Connecting piece; 531. Second limiting groove; 532. Seventh through hole; 6. First bolt and nut assembly; 7. Horizontal hole pin; 71. Horizontal through hole; 72. Second bolt and nut assembly; 100. Busbar. Detailed Implementation

[0024] Reference Figure 1-12 A retractable busbar clamp includes a clamp body, a current conductor 3, and a current lead-out portion 5. The clamp body clamps the end of the busbar 100. The two ends of the current conductor 3 are connected to the clamp body and the current lead-out portion 5, respectively. The clamp body and the current lead-out portion 5 are connected by a retractable telescopic component 4, allowing the clamp body and the current lead-out portion 5 to move closer or further apart, compensating for expansion and contraction of the circuit due to thermal expansion and contraction. The application of this clamp is similar to that of the MGS or MGSG type retractable busbar clamps.

[0025] Reference Figure 1-35-8, the main body of the clamp includes a pressure cap 1 and a base 2. The base 2 includes a receiving block 21. The pressure cap 1 and the receiving block 21 are connected by multiple sets of first bolt and nut assemblies 6. After the pressure cap 1 and the receiving block 21 are connected, they form a space to accommodate the tube busbar 100. The end of the tube busbar 100 is clamped by tightening the first bolt and nut assemblies 6. Specifically, the outer sides of the pressure cap 1 are provided with first grooves 11 for installing the first bolt and nut assemblies 6. The side wall of the pressure cap 1 in the first groove 11 is provided with first through holes 111 for bolts to pass through. The outer sides of the receiving block 21 are provided with second grooves 211 corresponding to the first grooves 11. The side wall of the receiving block 21 in the second groove 211 is provided with second through holes 212 communicating with the first through holes 111. After the bolts of the first bolt and nut assemblies 6 pass through the first through holes 111 and the second through holes 212, they are then locked with nuts, which can clamp the tube busbar 100. A baffle 22 is fixedly connected to the end of the receiving block 21 that extends outward away from the busbar 100. The baffle 22 is fixedly connected to the first plug plate 23. The first plug plate 23 is connected to the side of the baffle 22 that is away from the busbar 100. The surface of the first plug plate 23 is provided with a first wire socket 231 for inserting current wire 3. The current wire 3 is tightly inserted into the first wire socket 231. At least one current wire 3 is provided, usually two or more. There are four current wires 3 in the figure. The first plug plate 23 is fixedly connected with a connector 24 for connecting the base 2 to the slot 41 below. The connector 24 protrudes to the side away from the busbar 100. A third through hole 241 is provided on the connector 24.

[0026] Reference Figure 1-3 6, 11, The current lead-out part 5 includes a guide plate 51 and a second plug plate 52 fixedly connected. The guide plate 51 is connected to the side of the second plug plate 52 away from the busbar 100. One end of the current conductor 3 is inserted into the second plug plate 52 and the other end is inserted into the first plug plate 23. The surface of the second plug plate 52 is provided with a second conductor socket 521 for inserting the current conductor 3. The current conductor 3 is tightly inserted into the second conductor socket 521. The second plug plate 52 is fixedly connected with two connecting pieces 53 for connecting the current lead-out part 5 to the plug 42. The connecting pieces 53 are connected to the side of the second plug plate 52 near the busbar 100. A second limiting groove 531 is formed between the two connecting pieces 53 so that the plug 42 can be inserted. Both connecting pieces 53 are provided with a seventh through hole 532 for the connecting pin to pass through.

[0027] Reference Figure 1-46, 9, 10. The telescopic component 4 includes a slot 41 and a plug 42. The plug 42 can be inserted into the slot 41 and can slide along the length direction of the slot 41. The length direction mentioned in this utility model refers to the direction in which the current lead-out part 5 is connected to the wire clamp body. One end of the slot 41 is provided with a sliding groove 415 into which the plug 42 can be inserted. Specifically, the slot 41 includes two parallel side connecting plates 411. The two side connecting plates 411 are connected by a connecting wall 412. The two sides of the connecting wall 412 form a sliding groove 415 and a first limiting groove 414 formed by the two side connecting plates 411. The sliding groove 415 and the first limiting groove 414 are both connected to the outside. After one end of the plug 42 is inserted into the first limiting groove 414, it is hinged to the side connecting plate 411. The plug 42 can slide along the side connecting plate. The length of the plug 411 slides, and the other end of the plug 42 is hinged to the first plug plate 23 or the second plug plate 52. When the end of the plug 42 is hinged to the first plug plate 23, the end of the slot 41 away from the slide groove 415 (i.e., the end of the first limiting groove 414) is hinged to the second plug plate 52. When the end of the plug 42 is hinged to the second plug plate 52, the end of the slot 41 away from the slide groove 415 is hinged to the first plug plate 23. This utility model is described with the end of the plug 42 hinged to the second plug plate 52 as an example. The end of the plug 42 that is hinged to the slot 41 has a fifth through hole 421, and the end of the plug 42 that is hinged to the second plug plate 52 has a sixth through hole 422. The two side connecting plates 411 have corresponding elongated holes 413. The elongated holes 413 are opened on the side connecting plates 411 on both sides of the slide groove 415. The two side connecting plates 411 on both sides of the first limiting groove 414 have corresponding fourth through holes 416. The direction of the elongated holes 413 is the same as the length direction of the side connecting plates 411. The slot 41 and the plug 42 are hinged by a connecting pin that passes through the elongated holes 413 and the fifth through hole 421. The connecting pin can slide along the elongated holes 413. The plug block 42 is hinged to the second plug plate 52 by a connecting pin that passes through the seventh through hole 532 and the sixth through hole 422; the slot 41 is hinged to the first plug plate 23 by a connecting pin that passes through the third through hole 241 and the fourth through hole 416. The connecting pin can be a transverse hole pin 7. The transverse hole pin 7 has a transverse through hole 71 on its column. After the column of the transverse hole pin 7 passes through the through hole, the head remains on one side of the through hole, and the transverse through hole 71 extends from the other side. The transverse hole pin 7 can be prevented from falling off by the second bolt and nut assembly 72. Specifically, the bolt of the second bolt and nut assembly 72 is passed through the transverse through hole 71, and then the nut is screwed onto the bolt.

[0028] Working principle: Insert the end of the busbar 100 into the space between the pressure cap 1 and the receiving block 21, then tighten the first bolt and nut assembly 6 to clamp the end of the nut 100. The guide plate 51 is connected to the equipment terminal or fixing hardware (not shown in the figure, not within the scope of this utility model). The conductive channel is: busbar 100 - receiving block 21 - first plug plate 23 - current conductor 3 - second plug plate 52 - guide plate 51. The busbar telescopic clamp can compensate for the expansion and contraction of the circuit due to thermal expansion and contraction during the conduction process. For example, when the circuit expands due to heat, the telescopic component 4 will contract, and the clamp body and the current lead-out part 5 will move closer to each other. When the telescopic component 4 extends and retracts, the horizontal hole pin 7 of the slot 41 and the plug 42 hinged will slide along the elongated hole 413 towards the clamp body, and the distance between the clamp body and the current lead-out part 5 will decrease. Figure 12 (a) relative to Figure 1 In the contracted state, the clamp body and the current lead-out part 5 are directly close, rather than being misaligned to compensate for the elongation caused by circuit expansion. This results in less twisting of the current conductor 3. Because the slot 41 is hinged to the plug 42, the plug 42 is hinged to the second connector plate 52, and the slot 41 is hinged to the first connector plate 23, when the clamp body is close to the current lead-out part 5, the hinge point between the slot 41 and the plug 42 can also bulge outwards to compensate for circuit expansion. Figure 12 In state (b), the horizontal hole pin 7 slides a distance along the long hole 413 toward the wire clamp, and at the same time, the hinge of the slot 41 and the plug 42 also protrudes outward; of course, the wire clamp body and the current lead-out part 5 in the tube busbar telescopic wire clamp of this utility model can also be misaligned and offset like the existing telescopic wire clamp to compensate for the expansion and contraction of the circuit.

[0029] The present invention relates to a telescopic busbar clamp, wherein the clamp body and the current lead-out part are connected by a telescopic component that can extend and retract. The plug and slot in the telescopic component can slide relative to each other, so that the clamp body and the current lead-out part move closer or further apart, thereby changing the distance between the clamp body and the current lead-out part and compensating for the thermal expansion and contraction of the circuit.

Claims

1. A retractable busbar clamp, comprising a pressure cap (1) and a base (2), wherein the base (2) comprises a receiving block (21), the pressure cap (1) and the receiving block (21) are connected by a bolt and nut combination, and the pressure cap (1) and the receiving block (21) can clamp the end of the busbar (100) after being connected, the base (2) further comprises a first plug plate (23) fixedly connected to the receiving block (21), the first plug plate (23) being connected to one end of at least one current conductor (3), the clamp further comprises a current lead-out portion (5), the current lead-out portion (5) comprising a current guide plate (51) and a second plug plate (52) fixedly connected, the other end of the current conductor (3) being connected to the second plug plate (52), characterized in that: The first power strip (23) and the second power strip (52) are connected by a retractable telescopic component (4), which includes a slot (41) and a plug (42). The plug (42) can be inserted into the slot (41) and can slide along the length of the slot (41). One end of the slot (41) has a groove (415) into which a plug (42) can be inserted. The groove (415) is formed by two parallel side connecting plates (411) surrounding it and is connected to the outside. One end of the plug (42) is hinged to the side connecting plate (411) and can slide along the length of the side connecting plate (411). The other end of the plug (42) is hinged to the first socket plate (23) or the second socket plate (52). When the plug (42) is hinged to the first socket plate (23), the end of the slot (41) away from the groove (415) is connected to the second socket plate (52). Hinged, when the plug (42) is hinged to the second plug plate (52), the end of the slot (41) away from the slide (415) is hinged to the first plug plate (23); both side connecting plates (411) are provided with corresponding elongated holes (413), the length direction of the elongated holes (413) is the same as the length direction of the side connecting plates (411), the end of the plug (42) inserted into the slide (415) is provided with a through hole, the slot (41) and the plug (42) are hinged by a connecting pin that passes through the elongated hole (413) and the through hole, and the connecting pin can slide along the elongated hole (413).

2. The busbar telescopic clamp according to claim 1, characterized in that: The current conductor (3) has two or more conductors.

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