A high-toughness copper busbar soft connection structure

Abstract

The present invention relates to the technical field of copper busbar soft connection, and specifically provides a high-toughness copper busbar soft connection structure, comprising a copper busbar body, wherein fixed joints and movable joints are connected at both ends of the copper busbar body, a conductive plate is arranged between the fixed joint and the movable joint, and a limiting component and a buffer component are arranged on the conductive plate. The buffer component can absorb and reduce the impact and vibration caused by movement, and reduce the stress of the movable joint and the fixed joint. At the same time, the limiting component comprises a piston rod locking rod, and a friction plate is arranged on the side wall of the locking rod. The longer the distance between the fixed joint and the conductive plate moves, the greater the friction between the friction plate and the fixed joint, thereby increasing the difficulty of the fixed joint and the conductive plate continuing to move relative to each other, thereby playing a limiting role, thereby preventing the movable joint and the fixed joint from being separated.

Description

Technical Field

[0001] The invention relates to the technical field of copper busbar soft connection, in particular to a high-toughness copper busbar soft connection structure. Background Art

[0002] Copper busbar flexible connector is a connector used in power systems and equipment. It is suitable for various high-voltage electrical appliances, vacuum electrical appliances, mining explosion-proof switches, and automobiles, locomotives and other related products as flexible connectors. It is made of bare copper wire or tinned copper braided wire (twisted wire) by cold pressing. The interface of the copper busbar flexible connector is formed by one-time welding using molecular diffusion welding technology. The product has good quality, strong conductivity, high current bearing, low resistance, and durability.

[0003] During the soft connection process, the graphene coating can be applied to the copper busbar surface by spraying, dipping or spin coating, which can evenly cover the copper busbar surface to form a dense and continuous graphene film. The graphene coating can serve as a protective layer to prevent the copper busbar from oxidation and corrosion.

[0004] However, during the use of the copper busbar soft connection structure, mechanical vibration, human pulling and other reasons will cause the copper busbar to generate a certain tension, which will cause the connection to separate under the action of external force, affecting the normal use of the connection. Summary of the invention

[0005] Based on this, it is necessary to provide a high-toughness copper busbar soft connection structure to address the problem that the current copper busbar soft connection structure is easily disconnected by external force.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A high-toughness copper busbar soft connection structure, comprising:

[0008] A copper busbar body, with fixed joints connected at both ends of the copper busbar body;

[0009] A movable joint, wherein the movable joint is connected to the fixed joint, and a conductive plate is provided between the movable joint and the fixed joint, and the conductive plate can electrically connect the fixed joint and the movable joint;

[0010] A buffer assembly, wherein the buffer assembly can buffer the fixed joint and the movable joint at multiple levels;

[0011] A limit assembly, the limit assembly includes a locking rod and a piston rod, the piston rod is connected to the side wall of the conductive plate, one end of the locking rod is connected to the piston rod, and the other end of the locking rod is inserted into the fixed joint, a friction plate is provided on the side wall of the locking rod, the cavity of the piston rod is connected to the cavity of the locking rod, the friction plate is in frictional contact with the fixed joint, and the friction force between the friction plate and the fixed joint is positively correlated with the distance that the conductive plate moves relative to the movable joint.

[0012] Furthermore, a wedge-shaped groove is provided at the sliding connection between the conductive plate and the movable joint, and the telescopic end of the piston rod is in sliding contact with the wedge-shaped groove. When the conductive plate moves away from the movable joint, the telescopic end of the piston rod is shortened, and the gas in the piston rod enters the locking rod. The air pressure in the locking rod increases to push the friction plate.

[0013] Furthermore, there are multiple locking rods, which are cross-arranged, and the multiple locking rods are rotatably connected to the outer peripheral wall of the piston rod and are all connected to the cavity of the piston rod.

[0014] Furthermore, a plurality of first communicating holes are provided on the side wall of the piston rod, a second communicating hole is provided on the rotation connection between the plurality of locking rods and the piston rod, and the first communicating holes are connected to the second communicating holes.

[0015] Furthermore, a guide rod is provided on the conductive plate, and the guide rod is slidably connected to the fixed joint.

[0016] Furthermore, an elastic member is provided at the connection between the friction plate and the locking rod, and the elastic member can pull the friction plate to return to its original position or make the friction plate have a tendency to return to its original position.

[0017] Furthermore, the buffer assembly includes a tension spring and a compression spring, the tension spring connects the conductive plate and the fixed joint, and the compression spring connects the conductive plate and the movable joint.

[0018] Furthermore, a first limit plate is provided on the conductive plate, and a second limit plate is provided on the movable joint. When the conductive plate is located in the movable joint, the compression spring is located between the first limit plate and the second limit plate.

[0019] Furthermore, the fixed joint is detachably connected to the copper busbar body.

[0020] Furthermore, the conductive plate, the movable joint and the fixed joint are all made of conductive materials.

[0021] The beneficial effects of the present invention are:

[0022] The present invention provides a limiting assembly and a buffer assembly. The buffer assembly can absorb and reduce the impact and vibration caused by movement, and reduce the stress of the movable joint and the fixed joint. At the same time, the limiting assembly includes a piston rod locking rod, and a friction plate is provided on the side wall of the locking rod. The longer the distance the fixed joint and the conductive plate move, the greater the friction between the friction plate and the fixed joint, thereby increasing the difficulty of the fixed joint and the conductive plate to continue to move relative to each other, thus playing a limiting role. In addition, the first limiting plate and the second limiting plate on the conductive plate and the movable joint limit the separation of the conductive plate and the fixed joint, thereby preventing the movable joint and the fixed joint from separating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a high-toughness copper busbar soft connection structure provided by an embodiment of the present invention;

[0024] Figure 2 A left view of a high-toughness copper busbar soft connection structure provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A cross-sectional view of a high-toughness copper busbar soft connection structure along AA provided in an embodiment;

[0026] Figure 4 for Figure 3 A partial enlarged view of part X of the high-toughness copper busbar soft connection structure provided in an embodiment;

[0027] Figure 5 An exploded view of a high-toughness copper busbar soft connection structure provided by an embodiment of the present invention;

[0028] Figure 6 An exploded view of a fixed joint of a high-toughness copper busbar soft connection structure and a conductive plate provided by an embodiment of the present invention;

[0029] Figure 7 An exploded view of a piston rod and a locking rod of a high-toughness copper bar soft connection structure provided by an embodiment of the present invention;

[0030] Figure 8 A schematic structural diagram of a conductive plate of a high-toughness copper busbar soft connection structure provided by an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of the connection between the conductive plate and the auxiliary frame of the high-toughness copper busbar soft connection structure provided by one embodiment of the present invention;

[0032] Fig.10 A schematic structural diagram of a movable joint of a high-toughness copper busbar soft connection structure provided in one embodiment of the present invention.

[0033] in:

[0034] 100, copper busbar body; 110, bolt;

[0035] 200, fixed joint; 210, connecting hole; 220, connecting groove; 230, guide groove;

[0036] 300, conductive plate; 310, first limiting groove; 320, first limiting plate; 330, piston rod; 331, telescopic end; 332, first connecting hole; 333, spring; 340, locking rod; 341, second connecting hole; 342, ventilation groove; 350, friction plate; 351, elastic member; 360, guide rod; 370, tension spring;

[0037] 400, movable joint; 410, slide groove; 411, wedge groove; 420, second limiting groove; 430, connecting ear; 440, compression spring; 450, second limiting plate;

[0038] 500, auxiliary frame; 510, limit rod. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] Refer to the following Figure 1-Figure 10 To describe a high-toughness copper busbar soft connection structure provided by the present invention.

[0043] A high-toughness copper busbar soft connection structure includes a copper busbar body 100, wherein two ends of the copper busbar body 100 are respectively connected to fixed joints 200, and the fixed joint 200 is further connected to a movable joint 400, and the movable joint 400 can be detachably installed on the fixed joint 200, and a conductive plate 300 is arranged between the movable joint 400 and the fixed joint 200, and the conductive plate 300 is used to electrically connect the fixed joint 200 and the movable joint 400, that is, the conductive plate 300 conducts electricity to the fixed joint 200 and the movable joint 400, and the fixed joint 200 and the movable joint 400 are electrically connected. A buffer component is arranged between the movable joints 200 and 400, and the buffer component is used for multi-stage buffering of the fixed joint 200 and the movable joint 400. Due to the high-toughness copper busbar soft connection structure, the movable joint 400 and the fixed joint 200 will have relative movement due to mechanical vibration, human pulling and other reasons during use, and the buffer component can absorb and reduce the impact and vibration caused by the movement, reduce the stress of the movable joint 400 and the fixed joint 200, and the multi-stage buffer further reduces the stress of the movable joint 400 and the fixed joint 200.

[0044] A limit assembly is provided on the conductive plate 300, and the limit assembly is used to prevent the conductive plate 300 from being separated from the fixed joint 200. The limit assembly includes a locking rod 340 and a piston rod 330. The piston rod 330 is connected to the conductive plate 300, and the conductive plate 300 is slidably connected to the fixed joint 200 and the movable joint 400 respectively. The telescopic end 331 of the piston rod 330 is in sliding contact with the movable joint 400. One end of the locking rod 340 is connected to the piston rod 330, and the other end of the locking rod 340 is slidably inserted into the fixed joint 200. The locking rod 340 is hollow inside, and the internal cavity is connected to the internal cavity of the piston rod 330. At the same time, a friction plate 350 is also provided on the side wall of the locking rod 340. The friction plate 350 is specifically embedded in the side wall of the locking rod 340. When the piston rod 330 is shortened, the internal gas can be squeezed into the locking rod 340. When the air pressure in 40 increases, it can press the friction plate 350, so that the friction plate 350 contacts and is in friction contact with the fixed joint 200. When the movable joint 400 and the conductive plate 300 gradually move away from each other, the piston rod 330 will gradually shorten. As the length of the piston rod 330 decreases, the air pressure in the locking rod 340 increases, thereby increasing the force of pressing the friction plate 350, and increasing the friction between the friction plate 350 and the fixed joint 200, thereby preventing the conductive plate 300 and the fixed joint 200 from moving away from each other. In other words, the farther the movable joint 400 and the conductive plate 300 move, the greater the friction between the friction plate 350 and the fixed joint 200, thereby increasing the difficulty of the fixed joint 200 and the conductive plate 300 to continue to move relative to each other, thus playing a limiting role, thereby preventing the conductive plate 300 and the fixed joint 200 from separating.

[0045] Specifically, the movable joint 400 in this embodiment is an open shell, the conductive plate 300 is slidably arranged on the movable joint 400, a slide groove 410 is provided on the inner wall of the movable joint 400, and the piston rod 330 connected to the conductive plate 300 is located in the slide groove 410. A wedge-shaped groove 411 is also provided on the bottom of the slide groove 410. The side of the wedge-shaped groove 411 close to the copper bar body 100 is closer to the center of the movable joint 400, while the side of the wedge-shaped groove 411 away from the copper bar body 100 is farther from the center of the movable joint 400. The telescopic end 331 of the piston rod 330 is The piston rod 330 is in sliding contact with the wedge-shaped groove 411. When the conductive plate 300 gradually moves away from the movable joint 400, the telescopic end 331 of the piston rod 330 slides on the wedge-shaped groove 411. The wedge-shaped groove 411 pushes the piston rod 330 to shorten, and the gas in the cavity of the piston rod 330 is squeezed into the locking rod 340. The friction plate 350 on the locking rod 340 is subjected to a large thrust force, thereby increasing the friction force on the fixed joint 200, so that the locking rod 340 locks the fixed joint 200 on the conductive plate 300 through the friction plate 350 to prevent the conductive plate 300 from detaching from the fixed joint 200.

[0046] Specifically, there are multiple locking rods 340 in this embodiment, and the multiple locking rods 340 are cross-arranged. The multiple locking rods 340 are rotatably connected to the piston rod 330 and are all connected to the cavity of the piston rod 330. A torsion spring (not shown in the figure) is arranged at the rotation connection. Before installation, the two upper and lower adjacent locking rods 340 are aligned with each other. When all the locking rods 340 are installed in the fixed joint 200, the two upper and lower adjacent locking rods 340 are rotated to a mutually dislocated state under the action of the torsion spring. Each locking rod 340 is slidably plugged with the fixed joint 200, so that the friction plate 350 on each locking rod 340 can be in friction contact with the fixed joint 200. By arranging multiple locking rods 340 and being able to cross each other, the limiting force of the locking rods 340 on the fixed joint 200 can be increased, so that the fixed joint 200 and the locking rods 340 can withstand a greater pulling force without separation.

[0047] It should be noted that in order to facilitate the sliding connection between the multiple locking rods 340 and the fixed joint 200, a plurality of connection grooves 220 are provided on one end of the fixed joint 200 close to the conductive plate 300, and the plurality of connection grooves 220 are staggered up and down to accommodate the plurality of locking rods 340.

[0048] In order to facilitate the connection between the locking rod 340 and the piston rod 330, a plurality of first communication holes 332 distributed along the axial direction of the piston rod 330 are provided on the side wall of the piston rod 330. Figure 7 As shown, a second connecting hole 341 is provided at the rotational connection between the locking rod 340 and the piston rod 330. The locking rod 340 in the present invention has a ventilation groove 342 inside, and the ventilation groove 342 is connected to the second connecting hole 341. The other end of the ventilation groove 342 is connected to the bottom of the friction plate 350. The first connecting hole 332 and the second connecting hole 341 are connected. When the piston rod 330 is shortened, the gas inside it presses the friction plate 350 through the first connecting hole 332, the second connecting hole 341 and the ventilation groove 342, so that the friction force between the friction plate 350 and the fixed joint 200 is increased.

[0049] It should be noted that both ends of the piston rod 330 in this embodiment are telescopic ends 331, and the outer periphery of the telescopic end 331 is provided with a spring 333, the spring 333 can pull the shortened telescopic end 331 to extend, and the slide groove 410 and the wedge-shaped slide groove 410 on the inner wall of the movable joint 400 are symmetrically arranged, so that the telescopic ends 331 at both ends of the piston rod 330 are respectively in sliding contact with the symmetrically arranged wedge-shaped grooves 411, and when the movable joint 400 is away from the conductive plate 300, the two ends of the piston rod 330 are shortened at the same time to transport gas to the bottom of the friction plate 350.

[0050] Specifically, one locking rod 340 has two friction plates 350 and the two friction plates 350 are symmetrically arranged. An elastic member 351 is connected between the two friction plates 350. When the movable joint 400 is not far away from the conductive plate 300, the telescopic end 331 of the piston rod 330 is not shortened. At this time, the elastic member 351 is in the original length state. The friction force of the two friction plates 350 in the connecting groove 220 is small. When the movable joint 400 is far away from the conductive plate 300, the telescopic end 331 of the piston rod 330 is shortened. At this time, the two friction plates 350 are pushed away from each other by the gas, and the two friction plates 350 pull the elastic member 351 to extend, and the friction force of the two friction plates 350 on the connecting groove 220 increases. When the movable joint 400 and the conductive plate 300 are reset under the action of the buffer assembly, the telescopic end 331 of the piston rod 330 is extended, and the two friction plates 350 are no longer pushed by the gas. The two friction plates 350 are reset under the action of the elastic member 351, thereby reducing the friction force of the two friction plates 350 on the connecting groove 220.

[0051] In a further embodiment, a guide rod 360 is provided on the conductive plate 300, and the guide rod 360 is perpendicular to the conductive plate 300. A guide groove 230 is opened on the side of the fixed joint 200 close to the conductive plate 300. When the conductive plate 300 is installed on the fixed joint 200, the guide rod 360 is slidably inserted in the guide groove 230, thereby ensuring the correct connection between the conductive plate 300 and the fixed joint 200. The guide groove 230 and the guide rod 360 in this embodiment are arranged in pairs.

[0052] Specifically, the buffer assembly in this embodiment includes a tension spring 370 and a compression spring 440. The two ends of the tension spring 370 are respectively fixedly connected to the conductive plate 300 and the fixed joint 200. When the conductive plate 300 and the fixed joint 200 are away from each other, the tension spring 370 can play a buffering role. The two ends of the compression spring 440 are respectively fixedly connected to the conductive plate 300 and the movable joint 400. When the conductive plate 300 and the movable joint 400 are away from each other, the compression spring 440 plays a buffering role.

[0053] More specifically, in order to enable the compression spring 440 to play a buffering role, a first limiting plate 320 is provided on both sides of the conductive plate 300, and a second limiting plate 450 is provided on the movable joint 400. During installation, the conductive plate 300 is first installed in the movable joint 400, and then the compression spring 440 is connected to the first limiting plate 320 of the conductive plate 300, and then the second limiting plate 450 is fixedly installed on the movable joint 400, so that the two ends of the compression spring 440 are respectively abutted against the first limiting plate 320 and the second limiting plate 450. When the movable joint 400 is subjected to external When the pulling force causes the conductive plate 300 to move away from the movable joint 400, the first limiting plate 320 and the second limiting plate 450 squeeze the compression spring 440, and the compression spring 440 acts as a buffer. At the same time, the first limiting plate 320 and the second limiting plate 450 can also prevent the conductive plate 300 and the movable joint 400 from separating. For example, when the external pulling force is large, the compression spring 440 is compressed to the limit and cannot continue to be compressed. At this time, the first limiting plate 320 and the second limiting plate 450 limit the separation of the conductive plate 300 and the movable joint 400.

[0054] It should be noted that the tension spring 370 and the compression spring 440 can play a multi-stage buffering role. For example, when the movable joint 400 is subjected to a smaller force, the distance between the movable joint 400 and the fixed joint 200 is shorter. At this time, the tension spring 370 and the compression spring 440 work together to play a buffering role; when the movable joint 400 is subjected to a larger force, the distance between the movable joint 400 and the fixed joint 200 is longer. The tension spring 370 and the compression spring 440 work simultaneously in the initial stage. As the moving distance increases, the conductive plate 300 is farther away from the movable joint 400, and the two ends of the piston rod 330 on the conductive plate 300 slide in the wedge-shaped groove 411, and the two telescopic ends 331 of the piston rod 330 are gradually shortened under the action of the wedge-shaped groove 411. , the gas inside the piston rod 330 pushes the friction plate 350 through the ventilation groove 342, so that the friction force of the friction plate 350 on the connecting groove 220 increases, which makes the conductive plate 300 and the fixed joint 200 gradually locked, so that the buffering effect of the tension spring 370 gradually weakens until the two are relatively still, and the tension spring 370 no longer continues to stretch. At this time, only the compression spring 440 plays a buffering role. After the compression spring 440 is compressed to the limit, the first limiting plate and the second limiting plate prevent the conductive plate 300 and the movable joint 400 from separating. When the tension disappears, the compression spring 440 first resets to make the telescopic ends 331 at both ends of the piston rod 330 stretch and reset, thereby reducing the friction between the friction plate 350 and the connecting groove 220, and the tension spring 370 pulls the conductive plate 300 to gradually reset.

[0055] In a further embodiment, the fixing joint 200 of the present invention is detachably connected to the copper busbar body 100, specifically connected together by bolts 110, a connecting hole 210 is provided on one end of the fixing joint 200 close to the copper busbar body 100, and a threaded hole is provided on the copper busbar body 100, the bolt 110 passes through the connecting hole 210 and is threadedly connected in the threaded hole, thereby connecting the fixing joint 200 to the copper busbar body 100.

[0056] Specifically, the conductive plate 300, the movable joint 400 and the fixed joint 200 in the present invention are all made of conductive materials, generally copper. A connecting ear 430 is also provided on the movable joint 400, and the connecting ear 430 is used to connect other wires.

[0057] In a further embodiment, the high-toughness copper busbar soft connection structure of the present invention requires an installation tool during installation, and the installation tool is an auxiliary frame 500, and the auxiliary frame 500 has four mutually parallel limiting rods 510, and the four limiting rods 510 are grouped in pairs. The first limiting grooves 310 are opened on both sides of the guide rod 360 provided on the conductive plate 300, and the second limiting grooves 420 are opened on the side wall of the movable joint 400. The conductive plate 300 is first installed in the movable joint 400, and then the auxiliary frame 500 is used so that the limiting rods 510 on the auxiliary frame 500 pass through the second limiting grooves 420. 0 and the first limiting groove 310, the limiting rod 510 limits the multiple cross-arranged locking rods 340 to a state of being aligned with each other, that is, to align the upper and lower adjacent locking rods 340, thereby facilitating the multiple locking rods 340 to enter the connecting groove 220. After the multiple locking rods 340 enter the connecting groove 220, the auxiliary frame 500 is removed, and the multiple locking rods 340 lose the restriction of the limiting rod 510, and are restored to the cross state under the action of the torsion spring. When the auxiliary frame 500 is used for auxiliary installation, it is convenient for the multiple locking rods 340 to be connected to the fixed joint 200.

[0058] The specific installation process of a high-toughness copper busbar soft connection structure provided by the present invention is described in combination with the above embodiments:

[0059] Install:

[0060] The fixed joint 200 is connected to the two ends of the copper busbar body 100 by bolts 110. After the conductive plate 300 is installed in the movable joint 400, the compression spring 440 is installed so that one end of the compression spring 440 abuts against the first limiting plate 320 on the conductive plate 300. The second limiting plate 450 is then fixed on the movable joint 400 and the conductive plate 300 is then installed in the movable joint 400. Subsequently, the auxiliary frame 500 is used to pass the limiting rod 510 on the auxiliary frame 500 through the second limiting groove 420 and the first limiting groove 310. The limiting rod 510 limits the multiple locking rods 340 on the conductive plate 300 to a neatly arranged state, and then the movable joint 400 is pushed close to the fixed joint 200. The guide rod 360 on the conductive plate 300 is gradually inserted into the guide groove 230 of the fixed joint 200, and the multiple locking rods 340 also gradually enter the connecting groove 220. When the guide rod 360 is fully inserted into the guide groove 230, the auxiliary frame 500 is removed. After the multiple locking rods 340 are separated from the limiting rod 510, they gradually return to a cross-distributed state under the action of the torsion spring, so that each locking rod 340 enters the corresponding connecting groove 220.

[0061] When subjected to a small pulling force:

[0062] When the movable joint 400 is subjected to a relatively small pulling force, the relative moving distance between the movable joint 400 and the fixed joint 200 is relatively short, and at this time, the tension spring 370 and the compression spring 440 play a buffering role.

[0063] When subjected to a large tensile force:

[0064] When the movable joint 400 is subjected to a large pulling force, the relative movement distance of the movable joint 400 and the fixed joint 200 is relatively far, so that the sliding distance of the conductive plate 300 relative to the movable joint 400 increases, so that the wedge-shaped groove 411 in the movable joint 400 pushes the piston rod 330 on the conductive plate 300 to shorten, and the gas in the piston rod 330 enters the ventilation groove 342 through the first connecting hole 332 and the second connecting hole 341. The gas pushes the friction plate 350 through the ventilation groove 342, and the friction force between the friction plate 350 and the connecting groove 220 increases, thereby reducing the distance between the conductive plate 300 and the fixed joint 200. When the friction force between the friction plate 350 and the connecting groove 220 increases to a certain value, the conductive plate 300 and the fixed joint 200 are locked, that is, the two are no longer relatively far away from each other. At this time, the tension spring 370 no longer plays a buffering role, thereby protecting the tension spring 370. The compression spring 440 can still play a buffering role, and at the same time, the first limiting plate 320 and the second limiting plate 450 on the conductive plate 300 and the movable joint 400 can prevent the conductive plate 300 and the movable joint 400 from separating.

[0065] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-toughness copper busbar soft connection structure, characterized in that: include: A copper busbar body, with fixed joints connected at both ends of the copper busbar body; A movable joint, wherein the movable joint is connected to the fixed joint, and a conductive plate is provided between the movable joint and the fixed joint, and the conductive plate can electrically connect the fixed joint and the movable joint; A buffer assembly, wherein the buffer assembly can buffer the fixed joint and the movable joint at multiple levels; A limit assembly, the limit assembly includes a locking rod and a piston rod, the piston rod is connected to the side wall of the conductive plate, one end of the locking rod is connected to the piston rod, and the other end of the locking rod is inserted into the fixed joint, a friction plate is provided on the side wall of the locking rod, the cavity of the piston rod is connected to the cavity of the locking rod, the friction plate is in frictional contact with the fixed joint, and the friction force between the friction plate and the fixed joint is positively correlated with the distance that the conductive plate moves relative to the movable joint.

2. The high-toughness copper busbar soft connection structure according to claim 1 is characterized in that: A wedge-shaped groove is provided at the sliding connection between the conductive plate and the movable joint, and the telescopic end of the piston rod is in sliding contact with the wedge-shaped groove. When the conductive plate moves away from the movable joint, the telescopic end of the piston rod is shortened, and the gas in the piston rod enters the locking rod. The air pressure in the locking rod increases to push the friction plate.

3. The high-toughness copper busbar soft connection structure according to claim 2 is characterized in that: There are multiple locking rods, which are cross-arranged, and the multiple locking rods are rotatably connected to the outer peripheral wall of the piston rod and are all communicated with the cavity of the piston rod.

4. The high-toughness copper busbar soft connection structure according to claim 3 is characterized in that: A plurality of first communicating holes are provided on the side wall of the piston rod, a second communicating hole is provided on the rotation connection between the plurality of locking rods and the piston rod, and the first communicating hole is communicated with the second communicating hole.

5. The high-toughness copper busbar soft connection structure according to claim 2 is characterized in that: A guide rod is arranged on the conductive plate, and the guide rod is slidably connected to the fixed joint.

6. The high-toughness copper busbar soft connection structure according to claim 1 is characterized in that: An elastic member is provided at the connection between the friction plate and the locking rod, and the elastic member can pull the friction plate to return to its original position or make the friction plate have a tendency to return to its original position.

7. The high-toughness copper busbar soft connection structure according to claim 1 is characterized in that: The buffer assembly comprises a tension spring and a compression spring, wherein the tension spring connects the conductive plate and the fixed joint, and the compression spring connects the conductive plate and the movable joint.

8. The high-toughness copper busbar soft connection structure according to claim 7, characterized in that: A first limiting plate is arranged on the conductive plate, and a second limiting plate is arranged on the movable joint. When the conductive plate is located in the movable joint, the compression spring is located between the first limiting plate and the second limiting plate.

9. The high-toughness copper busbar soft connection structure according to claim 1, characterized in that: The fixed joint is detachably connected to the copper busbar body.

10. The high-toughness copper busbar soft connection structure according to claim 1, characterized in that: The conductive plate, the movable joint and the fixed joint are all made of conductive materials.

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