Stabilized busbar joint

Abstract

The utility model relates to bus joint technical field discloses a bus joint of stable insertion, including insulating plate, the insulating plate outer wall is pasted with the electrically conductive board, the insulating plate inside is provided with the through -hole, the insulating plate inside through -hole is provided with the insulating tube cover, the insulating tube cover inside is provided with the double -end bolt, the double -end bolt one end is connected with the torque nut and lock nut of screw thread, the double -end bolt other end is connected with the torque nut of screw thread, the both sides of insulating plate are provided with insulating half board and clamping plate respectively, the clamping plate inside is provided with the clamping groove, the clamping groove inside is provided with the gasket of curved arc shape. In the utility model, the arc gasket can provide certain internal thrust when clamping, makes the insulating plate and bus connection more stable, the clamping plate inside is equipped with the clamping groove, can be with the buckle on the external connecting plate quick snap, effectively prevent the joint loosening in the use process, has improved the mechanical stability and electrical continuity of overall structure.

Description

Technical Field

[0001] This utility model relates to the field of busbar connector technology, and in particular to a stable plug-in busbar connector. Background Technology

[0002] Busbar joints, as crucial connecting components in power transmission and distribution systems, are widely used in substations, distribution cabinets, and various electrical equipment. They undertake the critical tasks of conducting large currents and connecting different electrical units. The reliability and stability of their connections directly affect the operational safety and efficiency of the entire power system. A stable plug-in busbar joint was proposed in this context to improve the mechanical stability and electrical continuity of the busbar connection structure.

[0003] In existing technologies, busbar joints mostly adopt bolt-pressed structures, which isolate the conductive busbars through insulating plates and use metal bolts to pass through the insulating plates and fasten them to the conductive busbars. A common structure is to set metal clamps on both sides of the insulating plate, and use nuts to tighten them onto double-ended bolts to achieve clamping and electrical connection of the conductive busbars. Some structures also use the addition of flat washers, spring washers, etc. to prevent the nuts from loosening. The technical principle mainly relies on the bolt preload to achieve mechanical fixation and electrical contact.

[0004] However, in actual operation, such busbar joints are subject to the effects of material expansion and contraction caused by the thermal effect of current, mechanical vibration, and changes in ambient temperature. This can lead to a decrease in preload at the bolt connection, resulting in increased contact resistance. Consequently, this can cause the joint to overheat, accelerate oxidation, or even fail. In particular, under high current or vibration conditions, the nuts may loosen, which not only reduces the mechanical stability of the connection but also poses a potential threat to the continuous and reliable operation of electrical equipment. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a stable plug-in bus joint, which aims to improve the problem of bolted connections that may loosen under special circumstances.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stable plug-in busbar connector, comprising an insulating plate, a conductive plate attached to the outer wall of the insulating plate, a through hole inside the insulating plate, an insulating sleeve disposed within the through hole, a double-ended bolt fitted inside the insulating sleeve, a torque nut and a locking nut threaded to one end of the double-ended bolt, and a torque nut threaded to the other end of the double-ended bolt, the insulating plate being provided in multiple manner, with insulating half-plates respectively disposed on both sides of the insulating plate, the insulating half-plates fitting onto the outer wall of the insulating sleeve, a clamping plate disposed on the outer wall of the insulating half-plates, the clamping plate fitting onto the outer wall of the double-ended bolt, a clamping groove inside the clamping plate, a gasket disposed inside the clamping groove, the gasket fitting onto the outer wall of the double-ended bolt, and the gasket being curved.

[0007] Furthermore, the clamp plate has a slot inside, which engages with a buckle on the outer wall connecting plate.

[0008] Furthermore, a clamping piece is provided between the torque nut and the locking nut.

[0009] Furthermore, the double-ended bolt where the torque nut is located is a point prone to breakage.

[0010] Furthermore, the insulating plate has multiple heat dissipation holes that extend through its interior.

[0011] Furthermore, the insulating plate is made of insulating ceramic plate material.

[0012] Furthermore, the conductive plate is made of highly conductive copper or silver sheet.

[0013] Furthermore, the insulating half-plate is made of the same material as the insulating plate, and the insulating half-plate is only half the size of the insulating plate and has no heat dissipation holes.

[0014] This utility model has the following beneficial effects: In this invention, the busbar connector is secured by a double-headed bolt in conjunction with a torque nut and a locking nut. The arc-shaped washer provides a certain internal thrust during clamping, making the connection between the internal insulation plate and the busbar more stable. The clamp plate has a slot inside, which can be quickly engaged with the buckle on the external connecting plate. The operation is simple, the connection is stable and reliable, and it effectively prevents the connector from loosening due to vibration or temperature changes during use, thereby improving the mechanical stability and electrical continuity of the overall structure.

[0015] In this invention, the double-ended bolt is designed with a breakable structure at the torque nut. The deformed bolt after breakage makes the connection of the nut more stable. The insulating plate has multiple heat dissipation holes, which improves heat dissipation efficiency. The insulating plate made of insulating ceramic material is combined with a copper or silver conductive plate with excellent conductivity, which not only ensures electrical safety but also reduces contact resistance. The overall structure is compact and has superior performance. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a stable plug-in busbar connector proposed in this utility model; Figure 2 This is a schematic diagram of the insulation plate structure of a stable plug-in busbar connector proposed in this utility model. Figure 3 This is a schematic diagram of the insulating sleeve structure of a stable plug-in busbar connector proposed in this utility model. Figure 4 This is a schematic diagram of the clamping plate structure of a stable plug-in busbar connector proposed in this utility model. Figure 5This is a schematic diagram of the conductive plate structure of a stable plug-in busbar connector proposed in this utility model.

[0017] Legend: 1. Insulating plate; 2. Double-ended bolt; 3. Torque nut; 4. Clamping plate; 5. Locking nut; 6. Insulating sleeve; 7. Washer; 8. Torque nut; 9. Clamping plate; 10. Slot; 11. Clamping groove; 12. Conductive plate; 13. Heat dissipation hole; 14. Insulating half plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-5This utility model provides an embodiment of a stable plug-in busbar connector, comprising a conductive insulating plate 1 capable of isolating different potentials, a conductive plate 12 serving as a key current carrier attached to the outer wall of the insulating plate 1, an axial channel through hole inside the insulating plate 1 providing an insulating sleeve 6 and a double-ended bolt 2 for installation, an insulating sleeve 6 is provided inside the through hole of the insulating plate 1 to isolate the double-ended bolt 2 from the insulating plate 1, a double-ended bolt 2 penetrating the insulating sleeve 6 is fitted inside the insulating sleeve 6, and a double-ended bolt 2 applies clamping force to the components on both sides through threaded connecting nuts at both ends, a torque nut 3 capable of breaking the double-ended bolt 2 and a locking nut for adjusting the tightness are threaded to one end of the double-ended bolt 2. 5. The other end of the double-ended bolt 2 is threadedly connected to a torque nut 8 that works in conjunction with the locking nut 5 on the other end. The insulating plate 1 is provided with multiple sections that can be flexibly combined according to the number and specifications of the busbars. Insulating half-plates 14 are provided on both sides of the insulating plate 1 to fill the gaps at the edges of the insulating plate 1. The insulating half-plates 14 are fitted onto the outer wall of the insulating sleeve 6. A clamping plate 9 is provided on the outer wall of the insulating half-plates 14, which is in close contact with the outer wall of the insulating half-plates 14 and transmits force to the insulating half-plates 14 and the insulating plate 1 through a clamping action. The clamping plate 9 is fitted onto the outer wall of the double-ended bolt 2 and can move along the bolt axial direction as the nut is tightened, so as to achieve uniform clamping of the internal insulating half-plates 14 and the insulating plate 1. The clamping plate 9 has an opening inside to provide space for the gasket 7. The clamping groove 11 accommodates space, and a gasket 7 is provided inside the clamping groove 11. The gasket 7 can compensate for the assembly gap of the components through its own deformation. The gasket 7 is sleeved on the outer wall of the double-ended bolt 2 to avoid local wear caused by eccentric force. The gasket 7 is curved and has good elastic deformation ability. It can generate a uniform internal thrust during clamping to counteract the loosening tendency caused by vibration or temperature changes. The clamping plate 9 has a slot 10 inside that engages with the external buckle to achieve a locking function. The slot 10 engages with the buckle on the outer wall connecting plate. A clamping piece 4 is provided between the torque nut 3 and the locking nut 5 to reduce the friction between the two nuts. The double-ended bolt 2 where the torque nut 3 is located is easily broken. The insulation plate 1 can automatically break when the torque reaches the preset value, leaving only the locking nut 5 for locking and adjustment. The insulation plate 1 has multiple heat dissipation holes 13 that run through it to accelerate air circulation and prevent insulation aging or increased contact resistance due to overheating. The insulation plate 1 is made of insulating ceramic plate material, which has excellent insulation performance, high temperature resistance and mechanical strength, and can adapt to the high temperature environment when working with high current. The conductive plate 12 is made of highly conductive copper or silver sheet material, which can effectively reduce contact resistance, reduce power loss and heat generation. The insulating half plate 14 is made of the same material as the insulation plate 1. The insulating half plate 14 is only half the size of the insulation plate 1 and has no heat dissipation holes 13, which can fit the clamping space on both sides and reduce material waste.

[0020] Specifically, the insulating plate 1 and insulating half plate 14 made of insulating ceramic material ensure electrical safety, the highly conductive conductive plate 12 reduces contact resistance, the double-ended bolt 2, together with the torque nut 3, locking nut 5 and clamp 4 form multiple anti-loosening measures, the easy-break design ensures standardized fastening force, the curved gasket 7 provides continuous internal thrust through elastic deformation to counteract the loosening trend, the slot 10 of the clamp 9 engages with the external buckle to form an additional mechanical lock, effectively resisting vibration, at the same time, the heat dissipation holes 13 of the insulating plate 1 improve heat dissipation efficiency, the overall structure is compact and highly adaptable, solving the loosening problem caused by vibration and thermal effects of traditional joints, and is suitable for high current and high vibration power system scenarios.

[0021] Working principle: When using this type of stable plug-in busbar connector, during assembly, first attach the conductive plate 12 to the outer wall of the insulating plate 1, place the insulating sleeve 6 in the through hole of the insulating plate 1, place the insulating half plate 14 and the clamping plate 9 with the clamping groove 11 and the slot 10 on both sides of the insulating plate 1, so that the gasket 7 is accommodated in the clamping groove 11, then insert the double-ended bolt 2 into the insulating sleeve 6, screw in the torque nut 3, clamping plate 4 and locking nut 5 at one end, and screw in the torque nut 8 at the other end.

[0022] When clamping the busbar, by tightening the torque nut 3 and the locking nut 5, the arc structure of the washer 7 generates a uniform internal thrust, causing the clamping plate 9 to press the insulating half plate 14 and the insulating plate 1, thereby firmly clamping the busbar. The slot 10 on the clamping plate 9 can quickly engage with the buckle on the external connecting plate to achieve auxiliary positioning and anti-loosening. The easy-break design of the double-headed bolt 2 at the torque nut 3 can break when the predetermined torque is reached, ensuring consistent tightening force and reliable connection. The current flows through the highly conductive conductive plate 12 for transmission, and the generated heat is dissipated in time through multiple heat dissipation holes 13 on the insulating plate 1. The insulating plate 1 and the insulating half plate 14 made of insulating ceramic material effectively ensure electrical insulation safety, ultimately forming a stable, low-resistance, high-current-carrying busbar connection point.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stable plug-in busbar connector, comprising an insulating plate (1), characterized in that: The insulating plate (1) has a conductive plate (12) attached to its outer wall. The insulating plate (1) has a through hole inside. An insulating sleeve (6) is installed in the through hole inside the insulating plate (1). A double-ended bolt (2) is installed inside the insulating sleeve (6). One end of the double-ended bolt (2) is threaded with a torque nut (3) and a locking nut (5). The other end of the double-ended bolt (2) is threaded with a torque nut (8). There are multiple insulating plates (1). Insulating half plates (14) are installed on both sides of the insulating plate (1). The insulating half plates (14) are installed on the outer wall of the insulating sleeve (6). A clamping plate (9) is installed on the outer wall of the insulating half plate (14). The clamping plate (9) is installed on the outer wall of the double-ended bolt (2). A clamping groove (11) is opened inside the clamping groove (11). A gasket (7) is installed inside the clamping groove (11). The gasket (7) is installed on the outer wall of the double-ended bolt (2). The gasket (7) is curved.

2. The stable plug-in busbar connector according to claim 1, characterized in that: The clamp (9) has a slot (10) inside, which is engaged with the buckle on the outer wall connecting plate.

3. The stable plug-in busbar connector according to claim 1, characterized in that: A clamp (4) is provided between the torque nut (3) and the locking nut (5).

4. A stable plug-in busbar connector according to claim 1, characterized in that: The location of the torque nut (3) at the double-ended bolt (2) is a point where it is easily broken.

5. A stable plug-in busbar connector according to claim 1, characterized in that: The insulating plate (1) has multiple heat dissipation holes (13) that are opened through it.

6. A stable plug-in busbar connector according to claim 1, characterized in that: The insulating board (1) is made of insulating ceramic board material.

7. A stable plug-in busbar connector according to claim 1, characterized in that: The conductive plate (12) is made of highly conductive copper or silver sheet.

8. A stable plug-in busbar connector according to claim 1, characterized in that: The insulating half plate (14) is made of the same material as the insulating plate (1). The insulating half plate (14) is only half the size of the insulating plate (1) and has no heat dissipation holes (13).

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