Lock bolt assembly and busbar connecting assembly

Abstract

The utility model relates to the technical field of bolt connecting structures, and discloses a lock bolt assembly and a busbar connecting assembly. The lock bolt assembly comprises a bolt body which comprises a nut and a threaded rod connected with the nut, and a plurality of first clamping teeth are arranged on the side, close to the threaded rod, of the nut in the circumferential direction of the threaded rod; the gasket is provided with a via hole suitable for the threaded rod to penetrate through, a plurality of second clamping teeth are arranged on one side of the gasket in the circumferential direction of the via hole, and the second clamping teeth are suitable for being matched with the first clamping teeth; and the lead angle of the second latch is larger than that of the thread on the threaded rod. The first clamping teeth are matched with the second clamping teeth, so that stable clamping fit is formed between the bolt body and the gasket; due to the fact that the tooth profile angle of the second clamping tooth is larger than the lead angle of the thread on the threaded rod, the rotation trend after impact or vibration acts on the threaded rod is influenced by interference of the second clamping tooth, the first clamping tooth cannot rotate, the threaded rod cannot rotate, and the bolt is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt connection structures, in particular to an anti-loosening bolt assembly and a busbar connection assembly. Background Art

[0002] Threaded fasteners have the advantages of compact structure, easy assembly and disassembly, strong connection force, and reusability. They are widely used in equipment and facilities and are one of the important factors to ensure the safe, reliable and stable operation of equipment and facilities. Threaded fasteners have become one of the standardized parts and are widely used in heavy or special mechanical equipment in the fields of aircraft, high-speed trains, engineering vehicles, ships, etc. Working at static ambient temperature, the self-locking effect of traditional threaded connections can meet the requirements of fastening connections; when the structure is impacted or vibrated, the thread bevel will slide, the preload force of the threaded connection will gradually decrease, and the bolts will rotate and loosen or even fall off. Utility Model Content

[0003] In view of this, the utility model provides an anti-loosening bolt assembly to solve the problem that the current bolts are prone to rotate and loosen and fall off when subjected to impact or vibration. At the same time, the utility model provides a busbar connection assembly.

[0004] In a first aspect, the utility model provides an anti-loosening bolt assembly, comprising:

[0005] The bolt body comprises a nut and a threaded rod connected to the nut, wherein a side of the nut close to the threaded rod is provided with a plurality of first locking teeth along the circumference of the threaded rod;

[0006] A gasket, provided with a through hole suitable for the threaded rod to pass through, a plurality of second latching teeth are provided on one side of the gasket along the circumference of the through hole, and the second latching teeth are suitable for matching with the first latching teeth;

[0007] Wherein, the second tooth is provided with an inclined surface, the angle between the inclined surface and the cross section of the gasket is the tooth profile angle of the second tooth, the thread on the outer periphery of the threaded rod has a thread lead angle, and the tooth profile angle is greater than the thread lead angle.

[0008] In an optional embodiment, an inclined protrusion is provided on a side of the gasket facing away from the second latching tooth, and a plurality of the inclined protrusions are arranged along the circumference of the through hole.

[0009] In an optional embodiment, the inclined protrusion is configured as a fish scale pattern.

[0010] In an optional embodiment, a plurality of card interfaces are provided on the outer edge of the gasket, and when the gasket is assembled with the bolt body, the card interfaces are located on the outer side of the nut;

[0011] The anti-loosening bolt assembly is suitable for being disassembled by a disassembly tool, and the disassembly tool is provided with a snap-fitting portion suitable for cooperating with the card interface.

[0012] In an optional embodiment, a plurality of the card interfaces are provided and are evenly spaced along the circumference of the gasket.

[0013] In an optional implementation, the card interface is configured in a square shape, and the snap-fitting portion is correspondingly configured as a square protrusion.

[0014] In an optional implementation, the card interface is arranged in an arc shape, and the snap-fitting portion is correspondingly arranged as an arc-shaped protrusion.

[0015] In a second aspect, the utility model further provides a busbar connection assembly, the busbar connection assembly is used to connect two adjacent busbars, the busbar has an extension portion, and the extension portion is provided with a through hole;

[0016] The busbar connection assembly comprises:

[0017] A connecting plate, on which a threaded hole is provided, and the connecting plate is suitable for being arranged between two adjacent bus bars;

[0018] The anti-loosening bolt assembly described in any of the above embodiments, wherein the bolt body of the anti-loosening bolt assembly passes through the through hole and is connected to the connecting plate by the threaded hole to connect the bus bar to the connecting plate, and multiple groups of the anti-loosening bolt assemblies are suitable for connecting the connecting plate to two adjacent bus bars.

[0019] In an optional embodiment, one of the connecting plate and the extending portion is provided with a convex rib, and the other of the connecting plate and the extending portion is provided with a groove, and when the bus is connected to the connecting plate, the convex rib and the groove correspond to each other.

[0020] In an optional embodiment, the extension parts are provided with two opposite to each other, and the connecting plates are provided with two corresponding ones and are respectively provided on the inner sides of the extension parts.

[0021] Beneficial effects:

[0022] The utility model provides an anti-loosening bolt assembly. After the anti-loosening bolt assembly is integrally screwed into a structural member for fastening connection, the first clamping tooth and the second clamping tooth cooperate with each other to form a stable clamping fit between the bolt body and the gasket. When the anti-loosening bolt assembly is subjected to impact or vibration, since the tooth profile angle of the second clamping tooth is greater than the thread lead angle of the thread on the threaded rod, the rotation tendency of the threaded rod after the impact or vibration is affected by the interference of the second clamping tooth, and the first clamping tooth cannot rotate, and further the threaded rod cannot rotate, thereby preventing the bolt from loosening, solving the problem that the current bolt is prone to rotate and loosen and fall off when subjected to impact or vibration, and realizing "mechanical" anti-loosening.

[0023] After the anti-loosening bolt assembly is screwed into the structural member as a whole for tightening, the inclined protrusions on the gasket contact and resist the structural member, and "friction" anti-loosening is achieved between the several inclined protrusions and the structural member, which cooperates with the aforementioned "mechanical" anti-loosening to further prevent the bolts from loosening.

[0024] A card interface is provided on the outer edge of the gasket so that the anti-loosening bolt assembly can be disassembled as a whole through the gasket using a disassembly tool to perform maintenance and inspection on the equipment, thereby improving the efficiency of disassembling the anti-loosening bolt assembly.

[0025] The card interface is arranged in an arc shape, and a specific disassembly tool with an arc-shaped protrusion is required. The arc-shaped protrusion is inserted into the card interface arranged in an arc shape before the gasket can be rotated, thereby playing an anti-theft role.

[0026] The utility model also provides a bus connection assembly, which connects two adjacent bus bars by setting a connecting plate between two adjacent bus bars and opening corresponding holes, and then using an anti-loosening bolt assembly to fasten the bus bar and the connecting plate, thereby ensuring that a stable connection is formed between the two bus bars using the bus connection assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A structural schematic diagram of an anti-loosening bolt assembly provided by the utility model;

[0029] Figure 2 A schematic diagram of the structure of the bolt body provided by the utility model;

[0030] Figure 3 A bottom view of the bolt body provided by the utility model;

[0031] Figure 4 A schematic diagram of the structure of the gasket provided by the utility model;

[0032] Figure 5 A top view of the gasket provided by the utility model;

[0033] Figure 6 A bottom view of the gasket provided by the utility model;

[0034] Figure 7 This is a structural schematic diagram of the first gasket provided with a card interface provided by the utility model;

[0035] Figure 8 A schematic structural diagram of a second gasket provided with a card interface provided by the utility model;

[0036] Fig. 9 A schematic diagram of the structure of a busbar connecting assembly provided by the utility model for connecting a busbar.

[0037] Description of reference numerals:

[0038] 1. Bolt body; 101. Nut; 102. Threaded rod; 103. First locking tooth;

[0039] 2. gasket; 201. second latching tooth; 2011. inclined surface; 202. inclined convex portion; 203. card interface; 204. via hole;

[0040] 100, busbar; 1001, extension portion; 1002, groove;

[0041] 200, connecting plate; 2001, convex rib;

[0042] 300. Anti-loosening bolt assembly. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Combine the following Figure 1-Figure 9 , describing an embodiment of the utility model.

[0048] According to an embodiment of the utility model, on the one hand, a locking bolt assembly is provided, such as Figure 1-Figure 5 As shown, it includes: a bolt body 1 and a gasket 2.

[0049] The bolt body 1 includes a nut 101 and a threaded rod 102 connected to the nut 101, and a side of the nut 101 close to the threaded rod 102 is provided with a plurality of first latching teeth 103 along the circumference of the threaded rod 102; the gasket 2 is provided with a through hole 204 suitable for the threaded rod 102 to pass through, and a side of the gasket 2 is provided with a plurality of second latching teeth 201 along the circumference of the through hole 204, and the second latching teeth 201 are suitable for matching with the first latching teeth 103; wherein, the second latching teeth 201 are provided with an inclined surface 2011, and the angle between the inclined surface 2011 and the cross section of the gasket 2 is the tooth profile angle of the second latching teeth 201, and the thread on the outer periphery of the threaded rod 102 has a thread lead angle, and the tooth profile angle is greater than the thread lead angle.

[0050] In the above embodiment, after the anti-loosening bolt assembly is screwed into the structural member as a whole for fastening, the first latch tooth 103 and the second latch tooth 201 cooperate with each other to form a stable clamping fit between the bolt body 1 and the gasket 2; when the anti-loosening bolt assembly is subjected to impact or vibration, since the tooth profile angle of the second latch tooth 201 is greater than the thread lead angle of the thread on the threaded rod 102, the rotation trend of the threaded rod 102 after the impact or vibration is affected by the interference of the second latch tooth 201, and the first latch tooth 103 cannot be rotated, and the threaded rod 102 cannot be rotated, thereby preventing the bolt from loosening, solving the problem that the current bolt is prone to rotation and loosening and falling off when subjected to impact or vibration, and achieving "mechanical" anti-loosening.

[0051] Specifically, Figure 1 As shown, when the second tooth 201 is arranged on the gasket 2, it has a connected inclined surface 2011 and a vertical surface. The gasket 2 has a cross section perpendicular to the above vertical surface. The angle between the inclined surface 2011 and the above cross section is α. The tooth angle of the second tooth 201 is α; the peripheral thread of the threaded rod 102 has a specific thread line direction, and the angle between the tangent of the above spiral line and the plane perpendicular to the axis of the threaded rod 102 is the thread lead angle β of the thread on the threaded rod 102.

[0052] Furthermore, if Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the nut 101 in the bolt body 1 is an external hexagonal shape. Of course, in other embodiments, the nut 101 can also be set to other shapes, such as an external quadrangular shape, an external octagonal shape, etc.; the thread rise direction of the outer periphery of the threaded rod 102 is consistent with the direction of a plurality of second teeth 201 on the gasket 2; the first teeth 103 and the second teeth 201 are configured to be contoured to ensure a tight fit between the bolt body 1 and the gasket 2; the number of the first teeth 103 is six, and the number of the second teeth 201 is correspondingly set to six. Of course, in other embodiments, the number of the first teeth 103 and the second teeth 201 can also be set to three, four, five, seven, eight, etc., respectively, and the standard is two to sixteen.

[0053] Furthermore, the bolt body 1 and the gasket 2 are made of stainless steel.

[0054] Furthermore, the bolt body 1 has a specification range of M5 to M24, and the material is ferrous metal, non-ferrous metal, stainless steel, plastic, etc.; the grade is 8.8 to 12.9, which complies with the national standards GB5782-2000 "Hexagonal Head Bolts" and GB5783-2000 "Hexagonal Head Bolts Full Thread".

[0055] In some embodiments, Figure 4 , Figure 6As shown, an inclined protrusion 202 is provided on the side of the gasket 2 facing away from the second latching tooth 201 , and a plurality of inclined protrusions 202 are arranged along the circumference of the through hole 204 .

[0056] In the above embodiment, after the anti-loosening bolt assembly is screwed into the structural member as a whole for fastening, the inclined protrusions 202 on the gasket 2 contact and abut against the structural member, and "friction" anti-loosening is achieved between the several inclined protrusions 202 and the structural member, which cooperates with the aforementioned "mechanical" anti-loosening to further prevent the bolts from loosening.

[0057] Specifically, by the clamping fit between the first clamping tooth 103 and the second clamping tooth 201, and by limiting the tooth profile angle of the second clamping tooth 201 and the thread lead angle β of the thread on the threaded rod 102, "mechanical" anti-loosening is achieved by using the anti-loosening bolt assembly; by the abutment fit between the inclined protrusion 202 on the gasket 2 and the structural member, "friction" anti-loosening is achieved by using the anti-loosening bolt assembly; the anti-loosening bolt assembly adopts a new tooth profile anti-loosening mode that combines "mechanical" anti-loosening with "friction" anti-loosening, and shows excellent anti-loosening stability, which is more than 5 times higher than the GB6184-2000 standard.

[0058] Furthermore, the number of the inclined protrusions 202 is twelve. Of course, in other embodiments, the number of the inclined protrusions 202 can also be set to ten, eleven, thirteen, fourteen, etc., and the standard is four to twenty.

[0059] Furthermore, the inclined protrusion 202 can be configured to be in a triangle, square, arc shape, etc.

[0060] In some embodiments, Figure 4 , Figure 6 As shown, as a preferred embodiment, the inclined protrusion 202 is configured as a fish scale pattern.

[0061] In some embodiments, Figure 7 , Figure 8 As shown, the outer edge of the gasket 2 is provided with a plurality of card interfaces 203. When the gasket 2 is assembled with the bolt body 1, the card interfaces 203 are located on the outside of the nut 101. The anti-loosening bolt assembly 300 is suitable for being disassembled by a disassembly tool, and the disassembly tool is provided with a card fitting portion suitable for cooperating with the card interface 203.

[0062] In the above embodiment, a card interface 203 is provided on the outer edge of the gasket 2, so that the anti-loosening bolt assembly can be disassembled as a whole through the gasket 2 using a disassembly tool to maintain and inspect the equipment, thereby improving the efficiency of disassembling the anti-loosening bolt assembly.

[0063] Specifically, the disassembly tool is cylindrical as a whole, and has a snap-fitting portion that cooperates with the snap-fitting interface 203, and a accommodating cavity located on the inner side of the snap-fitting portion; when the disassembly tool is used to disassemble the anti-loosening bolt assembly as a whole, the disassembly tool is aligned along the axial direction of the bolt body 1, and then the snap-fitting portion of the disassembly tool is correspondingly embedded in the snap-fitting interface 203 of the gasket 2. At this time, the accommodating cavity on the inner side of the snap-fitting portion is used to avoid the nut 101, and then the disassembly tool is screwed to disassemble the anti-loosening bolt assembly as a whole.

[0064] In the above embodiment, a plurality of card interfaces 203 are evenly spaced around the gasket 2 to facilitate the overall disassembly of the anti-loosening bolt assembly while ensuring that the gasket 2 is subjected to stable force during disassembly.

[0065] Specifically, when there are three card interfaces 203, the gasket 2 is designed to divide the card interfaces 203 into three equal parts at 120°; when there are six card interfaces 203, the gasket 2 is designed to divide the card interfaces 203 into six equal parts at 60°.

[0066] In some embodiments, Figure 7 As shown, the card interface 203 is configured in a square shape, and the card-jointing mating portion is correspondingly configured as a square protrusion.

[0067] In the above embodiment, the card interface 203 is in a square shape and can be disassembled using a standard universal disassembly tool with a square protrusion, which is convenient, fast and reusable.

[0068] Specifically, there are three card interfaces 203 in a square shape, which are used in conjunction with a universal disassembly tool having three square protrusions.

[0069] In some embodiments, Figure 8 As shown, the card interface 203 is arranged in an arc shape, and the card-jointing mating portion is correspondingly arranged as an arc-shaped protrusion.

[0070] In the above embodiment, the card interface 203 is arranged in an arc shape, and a specific disassembly tool with an arc-shaped protrusion is required to insert the arc-shaped protrusion into the card interface 203 arranged in an arc shape in order to rotate the gasket 2, thereby playing an anti-theft role.

[0071] Specifically, there are six arc-shaped card interfaces 203 , which are used in conjunction with a specific disassembly tool having six arc-shaped protrusions.

[0072] In some embodiments, Figure 7 , Figure 8 As shown, a plurality of card interfaces 203 are provided and are evenly spaced along the circumference of the gasket 2 .

[0073] According to an embodiment of the present utility model, on the other hand, a busbar connection assembly is also provided, such as Fig. 9As shown, the busbar 100 connection assembly is used to connect two adjacent busbars 100 , and the busbar 100 has an extension portion 1001 , and a through hole is provided on the extension portion 1001 .

[0074] The busbar 100 connection assembly includes: a connection plate 200 and an anti-loosening bolt assembly 300 of any of the above-mentioned embodiments.

[0075] A threaded hole is provided on the connecting plate 200, and the connecting plate 200 is suitable for being arranged between two adjacent bus bars 100; the bolt body 1 of the anti-loosening bolt assembly 300 passes through the through hole and is connected to the connecting plate 200 by the threaded hole to connect the bus bar 100 with the connecting plate 200, and multiple sets of anti-loosening bolt assemblies 300 are suitable for connecting the connecting plate 200 to two adjacent bus bars 100.

[0076] In the above embodiment, a connecting plate 200 is provided between two adjacent busbars 100 and corresponding holes are opened, and then the busbar 100 and the connecting plate 200 are fastened and connected using an anti-loosening bolt assembly 300, thereby connecting two adjacent busbars 100, ensuring that a stable connection is formed between the two busbars 100 using the bus connection assembly.

[0077] Specifically, the busbar 100 is an important component of the rigid suspension contact network, which serves as an inlay for fixing the contact line and also as a part of the conductive cross section. At present, in the connection scheme of two adjacent busbars 100, due to the gravity of the busbar 100 and the contact line and the vibration external force generated by the train operation, the intermediate joint bolts currently used in the busbar 100 are easy to loosen. Once the bolts are loose, the two busbars 100 will fall to varying degrees at the joint, causing the interface of the busbar 100 to be pulled apart, and the contact line is easily twisted excessively due to irregular force, which poses a safety risk. The busbar connection assembly provided in this embodiment can ensure a stable connection between the two busbars 100, thereby solving the above problems.

[0078] Furthermore, a plurality of through holes are respectively provided at both ends of each busbar 100, and a plurality of threaded holes are respectively provided at both ends of each connecting plate 200; in the present embodiment, eight through holes are provided at one end of each busbar 100, and eight threaded holes are provided at one end of each connecting plate 200, and the busbar 100 and the connecting plate 200 are connected at the connecting position at each end of the connecting plate 200 by eight anti-loosening bolt assemblies 300, that is, sixteen anti-loosening bolt assemblies 300 are connected to one connecting plate 200.

[0079] Furthermore, the connecting plate 200 is made of aluminum alloy.

[0080] In some embodiments, Fig. 9As shown, one of the connecting plate 200 and the extension portion 1001 is provided with a rib 2001, and the other of the connecting plate 200 and the extension portion 1001 is provided with a groove 1002. When the bus 100 is connected to the connecting plate 200, the rib 2001 and the groove 1002 are matched with each other.

[0081] In the above embodiment, by providing the convex rib 2001 and the concave groove 1002 for corresponding cooperation, it is convenient to position the connection plate 200 when connecting two adjacent busbars 100, thereby improving the installation efficiency.

[0082] Specifically, in this embodiment, a convex rib 2001 is provided on the connecting plate 200 , and a groove 1002 is provided on the extending portion 1001 .

[0083] In some embodiments, Fig. 9 As shown, the extending portion 1001 has two oppositely disposed portions, and the connecting plates 200 are correspondingly disposed in two portions and are respectively disposed on the inner sides of the extending portion 1001 .

[0084] In the above embodiment, the conventional busbar 100 is designed in a “Π” shape as a whole, and has two extending portions 1001 arranged opposite to each other. Therefore, two connecting plates 200 are correspondingly arranged to respectively connect the two extending portions 1001 to improve the connection stability.

[0085] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present application.

Claims

1. An anti-loosening bolt assembly, characterized in that: include: A bolt body (1) comprises a nut (101) and a threaded rod (102) connected to the nut (101), wherein a side of the nut (101) close to the threaded rod (102) is provided with a plurality of first latching teeth (103) along the circumference of the threaded rod (102); A gasket (2) is provided with a through hole (204) suitable for the threaded rod (102) to pass through, and a plurality of second latch teeth (201) are provided on one side of the gasket (2) along the circumference of the through hole (204), and the second latch teeth (201) are suitable for matching with the first latch teeth (103); The second latching tooth (201) is provided with an inclined surface (2011), the angle between the inclined surface (2011) and the cross section of the gasket (2) is the tooth profile angle of the second latching tooth (201), the thread on the outer periphery of the threaded rod (102) has a thread lead angle, and the tooth profile angle is greater than the thread lead angle.

2. The anti-loosening bolt assembly according to claim 1, characterized in that: An inclined convex portion (202) is provided on the side of the gasket (2) facing away from the second latching tooth (201), and a plurality of the inclined convex portions (202) are arranged along the circumference of the through hole (204).

3. The anti-loosening bolt assembly according to claim 2, characterized in that: The inclined convex portion (202) is configured as a fish scale pattern.

4. The anti-loosening bolt assembly according to any one of claims 1 to 3, characterized in that: The outer edge of the gasket (2) is provided with a plurality of card interfaces (203); when the gasket (2) is assembled with the bolt body (1), the card interfaces (203) are located on the outer side of the nut (101); The anti-loosening bolt assembly (300) is suitable for being disassembled by a disassembly tool, and the disassembly tool is provided with a snap-fitting portion suitable for cooperating with the snap interface (203).

5. The anti-loosening bolt assembly according to claim 4, characterized in that: The card interfaces (203) are provided in plurality and are evenly spaced along the circumference of the gasket (2).

6. The anti-loosening bolt assembly according to claim 4, characterized in that: The card interface (203) is arranged in a square shape, and the card-jointing matching portion is correspondingly arranged as a square protrusion.

7. The anti-loosening bolt assembly according to claim 4, characterized in that: The card interface (203) is arranged in an arc shape, and the card-jointing matching portion is correspondingly arranged as an arc-shaped protrusion.

8. A busbar connection assembly, characterized in that: The busbar (100) connection assembly is used to connect two adjacent busbars (100), the busbar (100) having an extension portion (1001), and the extension portion (1001) is provided with a through hole; The busbar (100) connection assembly comprises: A connecting plate (200) having a threaded hole thereon, the connecting plate (200) being suitable for being arranged between two adjacent busbars (100); The anti-loosening bolt assembly (300) according to any one of claims 1 to 7, wherein the bolt body (1) of the anti-loosening bolt assembly (300) passes through the through hole and is connected to the connecting plate (200) by the threaded hole to connect the bus (100) to the connecting plate (200), and multiple groups of the anti-loosening bolt assemblies (300) are suitable for connecting the connecting plate (200) to two adjacent busbars (100).

9. The busbar connection assembly according to claim 8, characterized in that: One of the connecting plate (200) and the extending portion (1001) is provided with a convex rib (2001), and the other of the connecting plate (200) and the extending portion (1001) is provided with a groove (1002); when the busbar (100) is connected to the connecting plate (200), the convex rib (2001) and the groove (1002) are matched with each other.

10. The busbar connection assembly according to claim 8 or 9, characterized in that: The extension parts (1001) are provided with two parts that are arranged opposite to each other, and the connection plates (200) are provided with two parts that are correspondingly arranged and are respectively arranged on the inner sides of the extension parts (1001).

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