Bus duct connection structure and power transmission line
By using insulating partitions and limiting platforms in the busbar trunking connection structure, staggered conductor overlaps are achieved, solving the problems of cumbersome installation and poor contact in existing technologies, and improving the safety and installation efficiency of transmission lines.
Patent Information
- Application Number
- CN202423318026.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing busbar trunking connection structures, the installation process is cumbersome and the connecting pieces are prone to misalignment, leading to poor contact and affecting the safety performance of transmission lines.
Multiple connection spaces are formed by using insulating partitions. First and second connecting conductors are inserted in each space. The connection is achieved by staggering the overlap of the conductors, eliminating the need for connecting plates. The conductor position is ensured to be stable by using a limiting platform and fasteners.
It simplifies the installation process, improves the safety and stability of power transmission lines, reduces the use of connecting pieces, and has a more compact structure and smaller size.
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Figure CN223680717U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power transmission equipment, in particular to a bus duct connection structure and a power transmission line. BACKGROUND
[0002] In the related art, the bus duct is widely used in electrical equipment and power systems of civil buildings, factories and the like as a transmission facility of a large-current power supply line. In the connection of the power transmission line, the bus duct connection structure is an important component. In the existing bus duct connection structure, two bus connection ports lapped on the bus duct connector need to be lapped together through a connecting piece. The part combination in the installation process is complicated, and after the assembly is completed, the connecting piece is prone to misalignment with the insulating plate, resulting in poor contact and other problems, thereby causing poor safety performance of the power transmission line. CONTENT OF THE UTILITY MODEL
[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a bus duct connection structure which can save the connecting piece and improve the installation efficiency and safety performance.
[0004] The present application also provides a power transmission line with the bus duct connection structure.
[0005] The bus duct connection structure according to the first aspect of the present application comprises:
[0006] A bus duct connector, the bus duct connector comprising a plurality of insulating partitions, and a connecting space being provided between adjacent insulating partitions;
[0007] A first bus connection port, the first bus connection port comprising a first connecting conductor, and the first connecting conductor being inserted in the connecting space;
[0008] A second bus connection port, the second bus connection port comprising a second connecting conductor, and the second connecting conductor being inserted in the connecting space;
[0009] The first connecting conductor and the second connecting conductor are lapped together in a staggered manner.
[0010] The bus duct connection structure according to the embodiments of the present application has at least the following beneficial effects:
[0011] A plurality of mutually insulated connecting spaces are formed by a plurality of insulating partitions, one first connecting conductor and one second connecting conductor are respectively inserted in each connecting space, the connection of the power transmission line is realized by the lapping of the first connecting conductor and the second connecting conductor, the smooth transmission of the current is ensured by the arrangement of the plurality of connecting spaces, the connecting spaces are mutually insulated, the safety of power transmission is higher, the first connecting conductor and the second connecting conductor are lapped together in a staggered manner, so that the first connecting conductor and the second connecting conductor do not need to be connected by a connecting sheet, the poor contact of the power transmission line caused by the scattering or misplacement of the connecting sheet is avoided, and the safety and stability of the power transmission line are improved; the installation and connection of the power transmission line are completed by the direct lapping of the first connecting conductor and the second connecting conductor, the connecting sheet does not need to be installed, the installation process is greatly simplified, the installation of the power transmission line becomes simple and fast, and the on-site erection is facilitated; the first connecting conductor and the second connecting conductor are directly lapped without the need of installing the connecting sheet, the components that need to be installed during the connection of the bus duct are reduced, the bus duct connection structure is more compact, the volume of the bus duct connection structure is reduced, and the structure is more reasonable.
[0012] According to some embodiments of the present application, a first limiting table is arranged on the insulating partition, a connecting groove is arranged on each of the first connecting conductor and the second connecting conductor, and the connecting groove is connected with the first limiting table.
[0013] According to some embodiments of the present application, a first connecting socket and a second connecting socket are arranged on the first bus connecting port, a third connecting socket and a fourth connecting socket are arranged on the second bus connecting port, the width of the first connecting socket is equal to the thickness of the insulating partition, and the width of the second connecting socket is equal to the thickness of the insulating partition plus the thickness of the second connecting conductor; the thickness of the third connecting socket is equal to the thickness of the insulating partition plus twice the thickness of the first connecting conductor, and the thickness of the fourth connecting socket is equal to the thickness of the insulating partition plus the thickness of the first connecting conductor.
[0014] According to some embodiments of the present application, the insulating partition comprises a connecting portion and an edge portion, the connecting portion is connected with the first connecting conductor and / or the second connecting conductor, and the thickness of the edge portion is less than the thickness of the connecting portion.
[0015] According to some embodiments of the present application, the bus duct connector comprises a limiting side plate, two limiting side plates are arranged, and the insulating partition, the first connecting conductor and the second connecting conductor are arranged between the two limiting side plates.
[0016] According to some embodiments of the present application, the bus duct further comprises an insulating tube, the insulating tube is arranged on the limiting side plate and the insulating partition, and a fastener is arranged in the insulating tube.
[0017] According to some embodiments of the present application, the insulating tube is a polygonal prism.
[0018] According to some embodiments of the present application, a limiting portion is arranged on the first busbar connecting port and the second busbar connecting port, and a second limiting platform is arranged outside the limiting portion.
[0019] According to some embodiments of the present application, a mounting protrusion is arranged outside the limiting side plate, a mounting groove is formed between the mounting protrusion and the limiting side plate, and an elastic sheet is arranged on the mounting groove.
[0020] According to some embodiments of the present application, a power transmission line comprises the busbar slot connecting structure.
[0021] According to some embodiments of the present application, the power transmission line has at least the following beneficial effects:
[0022] The power transmission line of the embodiments of the present application adopts the busbar slot connecting structure of the above embodiments, the busbar slot connecting structure forms a plurality of mutually insulated connecting spaces through a plurality of insulating partitions, a first connecting conductor and a second connecting conductor are respectively inserted in each connecting space, the connection of the power transmission line is realized through the lapping of the first connecting conductor and the second connecting conductor, the transmission efficiency is higher through the arrangement of a plurality of connecting spaces, the safety of power transmission is higher because the connecting spaces are mutually insulated, the first connecting conductor and the second connecting conductor are lapped together in a staggered manner, so that the first connecting conductor and the second connecting conductor do not need to be connected through a connecting sheet, avoiding the poor contact of the power transmission line caused by the scattering or misplacement of the connecting sheet, and improving the safety of the power transmission line; the installation and connection of the power transmission line are completed through the direct lapping of the first connecting conductor and the second connecting conductor, without the need to install a connecting sheet, greatly simplifying the installation process, making the installation of the power transmission line simple and fast; through the direct lapping of the first connecting conductor and the second connecting conductor, the connecting sheet does not need to be installed, reducing the components that need to be installed during the connection of the busbar slot, making the busbar slot connecting structure more compact, reducing the volume of the busbar slot connecting structure, and making the structure more reasonable.
[0023] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS
[0024] The accompanying drawings are included to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used together with the embodiments disclosed in the present application to explain the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application.
[0025] Figure 1 FIG. 1 is a structural schematic diagram of a power transmission line according to an embodiment of the present application;
[0026] Figure 2 Fig. 1 is a structural schematic diagram of a bus duct connection structure according to an embodiment of the present application;
[0027] Figure 3 Fig. 2 is a structural schematic diagram of a power transmission wire in the bus duct connection structure according to an embodiment of the present application;
[0028] Figure 4 Fig. 3 is a three-dimensional structural schematic diagram of the bus duct connection structure according to an embodiment of the present application;
[0029] Figure 5 Fig. 4 is a structural schematic diagram of a bus duct in the bus duct connection structure according to an embodiment of the present application;
[0030] Figure 6 Fig. 5 is a three-dimensional structural schematic diagram of the bus duct in the bus duct connection structure according to an embodiment of the present application.
[0031] Reference signs:
[0032] Bus duct connection structure 100; bus duct connector 110; insulating partition plate 111; connection space 112; connection part 113; edge part 114; transition part 115; limiting side plate 116; insulating tube 117; mounting protrusion 118; mounting groove 119; power transmission wire 120; first bus connection port 130; first connection conductor 131; first connection end 132; first connection socket 133; second connection socket 134; connection groove 135; second bus connection port 140; second connection conductor 141; second connection end 142; third connection socket 143; fourth connection socket 144; limiting part 145; second limiting platform 146; elastic sheet 150; fastener 160; torque bolt 161; anti-loosening elastic pad 162; square nut 163; first limiting platform 170. DETAILED DESCRIPTION
[0033] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation to the present application.
[0034] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation to the present application.
[0035] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0036] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.
[0037] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0038] Referring to Figure 1 , 2 , 3, 5, the bus duct connecting structure 100 of the embodiment of the present application can be applied to the connection of the power transmission line. Different power transmission lines 120 can be connected together through the bus duct connecting structure 100 to form a complete power transmission line. The bus duct connecting structure 100 includes a bus duct connector 110, a first bus connecting port 130 and a second bus connecting port 140. The first bus connecting port 130 and the second bus connecting port 140 are respectively arranged at both ends of a power transmission line 120. The first bus connecting port 130 of a power transmission line 120 can be connected together with the second bus connecting port 140 of other power transmission lines 120 through the bus duct connector 110. The connecting structure is the bus duct connecting structure 100 of the embodiment of the present application;
[0039] The bus duct connector 110 includes a plurality of insulating partitions 111, and a connecting space 112 is arranged between adjacent insulating partitions 111. The first bus connecting port 130 includes a first connecting conductor 131, and the first connecting conductor 131 is inserted into the connecting space 112. The second bus connecting port 140 includes a second connecting conductor 141, and the second connecting conductor 141 is inserted into the connecting space 112.
[0040] The first connecting conductor 131 and the second connecting conductor 141 are overlapped together.
[0041] The plurality of connection spaces 112 are formed by the plurality of insulating partitions 111, one first connecting conductor 131 and one second connecting conductor 141 are respectively inserted in each connection space 112, the connection of the power transmission line is realized by the lap joint of the first connecting conductor 131 and the second connecting conductor 141, the power transmission efficiency is higher by arranging the plurality of connection spaces 112, the safety of power transmission is higher because the connection spaces 112 are mutually insulated, the first connecting conductor 131 and the second connecting conductor 141 are lap jointed together staggered with each other, so that the first connecting conductor 131 and the second connecting conductor 141 do not need to be connected by the connecting sheet, avoiding the poor contact of the power transmission line caused by the scattering or misplacement of the connecting sheet, improving the safety of the power transmission line; the installation and connection of the power transmission line are completed by the direct lap joint of the first connecting conductor 131 and the second connecting conductor 141, without the need to install the connecting sheet, greatly simplifying the installation process, making the installation of the power transmission line simple and fast; the direct lap joint of the first connecting conductor 131 and the second connecting conductor 141 does not need to install the connecting sheet, reducing the components needed to be installed when connecting the bus duct, making the bus duct connection structure 100 more compact, reducing the volume of the bus duct connection structure 100, and the structure is more reasonable.
[0042] In the embodiment of the application, the first bus connecting port 130 is connected to the power transmission line 120 through the first connecting end 132, the second bus connecting port 140 is connected to the power transmission line 120 through the second connecting end 142, the first connecting end 132 is located at the middle of one end of the power transmission line 120, and the second connecting end 142 is located at the middle of the other end of the power transmission line 120, that is, when the power transmission line 120 is placed horizontally, the first connecting end 132 and the second connecting end 142 are located at the same height.
[0043] The power transmission line 120 extends a plurality of first connecting conductors 131 from the first connecting end 132, a first connecting socket 133 is formed between the two first connecting conductors 131 in the middle, and a second connecting socket 134 is formed between the other first connecting conductors 131 located outside the two first connecting conductors 131 in the middle and the adjacent first connecting conductors 131, and the width of each second connecting socket 134 is equal. The power transmission line 120 extends a plurality of second connecting conductors 141 from the second connecting end 142, a third connecting socket 143 is formed between the two second connecting conductors 141 in the middle of the second bus connecting port 140, and a fourth connecting socket 144 is formed between the other second connecting conductors 141 located outside the two second connecting conductors 141 in the middle and the adjacent second connecting conductors 141, and the width of each fourth connecting socket 144 is equal.
[0044] Specifically, the width of the first connecting socket 133 is equal to the thickness of the insulating partition plate 111, the width of the second connecting socket 134 is equal to the thickness of the insulating partition plate 111 plus the thickness of the second connecting conductor 141; the thickness of the third connecting socket 143 is equal to the thickness of the insulating partition plate 111 plus twice the thickness of the first connecting conductor 131, and the thickness of the fourth connecting socket 144 is equal to the thickness of the insulating partition plate 111 plus the thickness of the first connecting conductor 131.
[0045] After the bus duct connecting structure 100 is connected, one insulating partition plate 111 is inserted into the first connecting socket 133, two first connecting conductors 131 located in the middle of the first bus connecting port 130 are inserted into the third connecting socket 143, two second connecting conductors 141 located in the middle of the second bus connecting port 140 have one insulating partition plate 111 respectively clamped on the outer side of each, and the first connecting conductor 131 clamped on the insulating partition plate 111 clamped on the outer side of the two second connecting conductors 141 located in the middle of the second bus connecting port 140 is inserted into the fourth connecting socket 144, and one insulating partition plate 111 and one second connecting conductor 141 are inserted into the second connecting socket 134.
[0046] Through the above structure, two different power transmission lines 120 can be connected together through the bus duct connecting structure 100 of the embodiment of the application, one first connecting conductor 131 and one second connecting conductor 141 are clamped in each connecting space 112, and the two power transmission lines 120 can be kept in alignment.
[0047] In the embodiment of the application, with reference to Figure 4 , 5 , 6, the insulating partition plate 111 is provided with a first limiting table 170, the first connecting conductor 131 and the second connecting conductor 141 are both provided with a connecting groove 135, and the connecting groove 135 is connected with the first limiting table 170.
[0048] When the first busbar connecting port 130 is inserted into the bus duct connector 110, the first connecting conductor 131 is inserted into the connecting space 112 between the two insulating partitions 111, at this time the first limiting table 170 is just clamped in the connecting groove 135 on the first connecting conductor 131, so that the first connecting conductor 131 cannot continue to be inserted, thereby limiting the first connecting conductor 131 at a preset position; similarly, when the second connecting conductor 141 is inserted into the connecting space 112, the first limiting table 170 is clamped in the connecting groove 135 of the second connecting conductor 141, thereby limiting the second connecting conductor 141 at a preset position. At the same time, after the installation of the bus duct connecting structure 100 is completed, the first limiting table 170 and the connecting groove 135 can also ensure that the first connecting conductor 131 and the second connecting conductor 141 will not be displaced. Through the connecting groove 135 and the first limiting table 170, the accuracy of the installation of the bus duct connecting structure 100 can be ensured, and the safety of the power transmission line can be ensured.
[0049] In the embodiment of the present application, the insulating partition 111 includes a connecting portion 113 and an edge portion 114, the connecting portion 113 is connected with the first connecting conductor 131 and / or the second connecting conductor 141, the thickness of the edge portion 114 is less than the thickness of the connecting portion 113, and a transition portion 115 is arranged between the edge portion 114 and the connecting portion 113, and the transition portion 115 is a bevel.
[0050] By arranging the edge portion 114 with a smaller thickness on the insulating partition 111, the outer space width of the connecting space 112 between the insulating partitions 111 is larger, which facilitates the insertion of the first busbar connecting port 130 and the second busbar connecting port 140, and the bus duct connecting structure 100 has sufficient creepage distance, thereby ensuring the safety of power use.
[0051] In the embodiment of the present application, the bus duct connector 110 includes a limiting side plate 116, and two limiting side plates 116 are arranged, and the insulating partition 111, the first connecting conductor 131 and the second connecting conductor 141 are arranged between the two limiting side plates 116.
[0052] By arranging the limiting side plate 116, the insulating partition 111, the first connecting conductor 131 and the second connecting conductor 141 are limited between the two limiting side plates 116, so as to prevent the insulating partition 111 and the first connecting conductor 131 and the second connecting conductor 141 from being loose or misaligned.
[0053] In the embodiment of the present application, with reference to Figure 6 , the bus duct connector 110 further includes an insulating pipe 117, the insulating pipe 117 is arranged on the limiting side plate 116 and the insulating partition 111, and a fastener 160 is arranged in the insulating pipe 117. Specifically, the fastener 160 includes a torque bolt 161, a lock washer 162 and a square nut 163.
[0054] The bus duct connecting structure 100 is fastened by the fastener 160, the assembly of the bus duct connecting structure 100 is completed, the insulating tube 117 is sleeved on the fastener 160, the fastener 160 is prevented from conducting electricity, and the safety of the power transmission line is ensured.
[0055] In the embodiment of the application, the insulating tube 117 is a polygonal prism. Specifically, the insulating tube 117 is a quadrangular prism.
[0056] The insulating tube 117 adopts a polygonal prism, which can play a limiting role, prevent the insulating partition plate 111 from slipping and rotating to cause misalignment, and ensure the safety of the power transmission line.
[0057] In the embodiment of the application, the first bus connecting port 130 and the second bus connecting port 140 are both provided with a limiting portion 145, and the second limiting table 146 is arranged outside the limiting portion 145.
[0058] After the first bus connecting port 130 and the second bus connecting port 140 are inserted into the bus duct connector 110, the limiting side plate 116 is located outside the limiting portion, the second limiting table 146 outside the limiting portion 145 can limit the position of the limiting side plate 116, the first bus connecting port 130 and the second bus connecting port 140 are prevented from being inserted too deeply, and at the same time, the second limiting table 146 arranged outside the limiting portion 145 can also be used to conveniently and intuitively judge the accuracy of the insertion position of the first bus connecting port 130 and the second bus connecting port 140.
[0059] In the embodiment of the application, the limiting side plate 116 is provided with a mounting protrusion 118 outside, the mounting protrusion 118 and the limiting side plate 116 form a mounting groove 119, and the mounting groove 119 is provided with a spring piece 150.
[0060] The spring piece can provide a buffering effect for the bus duct connecting structure 100, and prevent the insulating partition plate 111 from being damaged by excessive external pressure.
[0061] The power transmission line of the embodiment of the application comprises the bus duct connecting structure 100 of the above-mentioned embodiment.
[0062] The power transmission line adopts the bus duct connecting structure 100 of the above embodiment, the bus duct connecting structure 100 forms a plurality of mutually insulated connecting spaces 112 through a plurality of insulating partitions 111, a first connecting conductor 131 and a second connecting conductor 141 are respectively inserted in each connecting space 112, the connection of the power transmission line is realized through the lap joint of the first connecting conductor 131 and the second connecting conductor 141, through the arrangement of a plurality of connecting spaces 112, the power transmission efficiency is higher, the connecting spaces 112 are mutually insulated, the safety of power transmission is higher, the first connecting conductor 131 and the second connecting conductor 141 are overlapped and jointed together, so that the first connecting conductor 131 and the second connecting conductor 141 do not need to be connected through the connecting sheet, avoiding the scattered or misaligned connecting sheet to cause poor contact of the power transmission line, improving the safety of the power transmission line; through the direct lap joint of the first connecting conductor 131 and the second connecting conductor 141, the installation and connection of the power transmission line are completed, without the need to install the connecting sheet, greatly simplifying the installation process, making the installation of the power transmission line simple and fast; through the direct lap joint of the first connecting conductor 131 and the second connecting conductor 141, without the need to install the connecting sheet, reducing the components that need to be installed during the connection of the bus duct, making the bus duct connecting structure 100 more compact, reducing the volume of the bus duct connecting structure 100, and the structure is more reasonable.
[0063] In some alternative embodiments, the functions / operations mentioned in the block diagrams can not occur in the order mentioned in the operation diagram. For example, depending on the functions / operations involved, two blocks shown in succession can actually be executed substantially simultaneously or the blocks can sometimes be executed in reverse order. In addition, the embodiments presented and described in the flowcharts of the present application are provided by way of example, with the purpose of providing a more comprehensive understanding of the technology. The disclosed method is not limited to the operations and logical flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are independently executed.
[0064] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
Claims
1. A bus duct connection structure, characterized by, include: A busbar connector, the busbar connector comprising multiple insulating partitions, with a connection space provided between adjacent insulating partitions; A first busbar connection port, the first busbar connection port including a first connection conductor, the first connection conductor being inserted into the connection space; The second busbar connection port includes a second connection conductor, which is inserted into the connection space. The first connecting conductor and the second connecting conductor are staggered and overlapped.
2. The bus duct connection structure according to claim 1, characterized by The insulating partition is provided with a first limiting platform, and both the first connecting conductor and the second connecting conductor are provided with connecting grooves, which are connected to the first limiting platform.
3. The bus duct connection structure according to claim 1, characterized by The first busbar connection port is provided with a first connection socket and a second connection socket, and the second busbar connection port is provided with a third connection socket and a fourth connection socket. The width of the first connection socket is equal to the thickness of the insulating partition, the width of the second connection socket is equal to the thickness of the insulating partition plus the thickness of the second connecting conductor, the thickness of the third connection socket is equal to the thickness of the insulating partition plus twice the thickness of the first connecting conductor, and the thickness of the fourth connection socket is equal to the thickness of the insulating partition plus the thickness of the first connecting conductor.
4. The busway connection structure of claim 1, wherein The insulating partition includes a connecting portion and an edge portion. The connecting portion is connected to the first connecting conductor and / or the second connecting conductor, and the thickness of the edge portion is less than the thickness of the connecting portion.
5. The busway connection structure of claim 1, wherein The busbar trunking includes two limiting side plates, and the insulating partition, the first connecting conductor, and the second connecting conductor are disposed between the two limiting side plates.
6. The bus duct connection structure according to claim 5, characterized by The busbar connector also includes an insulating tube, which passes through the limiting side plate and the insulating partition, and fasteners pass through the insulating tube.
7. The busway connection structure of claim 6, wherein The insulating tube is a polygonal prism.
8. The busway connection structure of claim 1, wherein Both the first busbar connection port and the second busbar connection port are provided with limiting parts, and a second limiting platform is provided on the outside of the limiting parts.
9. The busway connection structure of claim 5, wherein, The outer side of the limiting side plate is provided with a mounting protrusion, and the mounting protrusion and the limiting side plate form a mounting groove, on which a spring piece is provided.
10. A power transmission line, characterized by Includes the busbar trunking connection structure as described in any one of claims 1 to 9.