A connecting device between a plug-in box and a bus duct

Abstract

The utility model provides a kind of connecting device between plug-in box and bus duct, it is related to power transmission and distribution equipment technical field, including first connecting assembly, the first connecting assembly includes fixed plate and telescopic part, the fixed end of telescopic part is connected to the top and / or bottom of plug-in box, the movable end of telescopic part is connected one end of the fixed plate, the other end of the fixed plate is equipped with with bus duct sliding connection and the hook portion that bus duct is clamped towards plug-in box;Second connecting assembly, the second connecting assembly includes mounting plate installed in the back of plug-in box and first mounting hole arranged on bus duct, second mounting hole corresponding with the first mounting hole is equipped on the mounting plate. Realize the quick accurate positioning of plug-in box and anti-slip rigid fixation, completely eliminate safety hazard.

Description

Technical Field

[0001] This utility model relates to the field of power transmission and distribution equipment technology, specifically to a connection device between a plug-in box and a busbar trunking. Background Technology

[0002] With the development of the market power industry, users have increasingly higher requirements for the safety and reliability of power transmission and distribution equipment. Currently, the connection between plug-in boxes and busbar trunking mostly adopts a pressure plate fixing structure. This structure has obvious defects in practical applications: First, its positioning during installation is not accurate enough, making it difficult to quickly achieve precise alignment between the box and the busbar trunking; second, and more importantly, during long-term use, the plug-in box tends to slide downwards or loosen under its own weight and external vibrations and forces. This not only leads to poor contact at the connection point and potential electrical safety hazards, but may also cause plastic deformation of load-bearing structures such as locking feet, ultimately leading to safety accidents. Therefore, the existing connection method cannot simultaneously guarantee the convenience and accuracy of the connection with the stability and safety of long-term use, and urgently needs improvement.

[0003] Therefore, this utility model proposes a connection device between a plug-in box and a busbar trunking. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a connection device between a plug-in box and a busbar trunking, which enables rapid and accurate positioning of the plug-in box and rigid fixation against slippage, thus completely eliminating safety hazards.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A connection device between a plug-in box and a busbar trunking includes a first connection assembly. The first connection assembly includes a fixed plate and a telescopic member. The fixed end of the telescopic member is connected to the top and / or bottom of the plug-in box, and the movable end of the telescopic member is connected to one end of the fixed plate. The other end of the fixed plate is provided with a hook that is slidably connected to the busbar trunking and clamps the busbar trunking toward the plug-in box.

[0007] The second connection assembly includes a mounting plate installed on the back of the plug-in box and a first mounting hole provided on the busbar trunking. The mounting plate is provided with a second mounting hole corresponding to the first mounting hole.

[0008] Preferably, the telescopic rod is a threaded rod, one end of which is fixed to the fixing block and passes through the fixing block fixed to the plug box and is bolted to the fixing plate.

[0009] Preferably, the fixing plate is provided with a limiting hole, and a limiting bolt is installed in the limiting hole. The limiting bolt passes through the fixing plate and the fixing block in sequence and is connected to the plug-in box.

[0010] Preferably, the limiting hole is waist-shaped.

[0011] Preferably, a spring is fitted onto the threaded rod, and the spring is located between the fixed plate and the fixed block.

[0012] Preferably, the fixing plate is an L-shaped plate, comprising a first plate and a second plate that are perpendicular to each other. The first plate is connected to the movable end of the telescopic member, and the end of the second plate is provided with the hook.

[0013] Preferably, the hook is an L-shaped, J-shaped, or arc-shaped structure, and the opening of the hook faces the back of the plug-in box.

[0014] Preferably, the second mounting hole and the first mounting hole are connected through a connector; the connector is a pin, bolt, or connecting rod.

[0015] Preferably, the first connecting component is provided in two sets, corresponding to the top and bottom of the plug-in box respectively.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This solution achieves a fast, accurate, and reliable connection between the plug-in box and the busbar trunking through a step-by-step operation. During installation, the hook at the front end of the telescopic drive plate first hooks onto the side edge of the busbar trunking, using sliding contact to complete initial alignment. Under the action of telescopic force, the busbar trunking is stably pulled towards the back of the plug-in box, forming an effective pre-clamp to prevent slippage during installation. Subsequently, the mounting plate on the back of the plug-in box is finally fixed to the corresponding mounting holes on the busbar trunking. This device uses an L-shaped fixing plate and a hook with a specific contour to form a stable force-bearing structure, combined with an inner roller design to reduce friction and make operation more effortless. Dual sets of connecting components distributed at the top and bottom of the box achieve balanced force distribution, avoiding box deformation caused by single-point force. The entire device, through the synergistic effect of "sliding pre-clamping" and "rigid locking at the holes," fundamentally solves the safety hazards of inaccurate positioning and easy slippage inherent in traditional connection methods, significantly improving installation efficiency and connection reliability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the connection device between a plug-in box and a busbar trunking according to the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the plug-in box;

[0021] Figure 3 This is a top view of the plug-in box;

[0022] Figure reference numerals: 1-First connecting assembly; 101-Fixing plate; 102-Telescopic component; 103-Hook; 104-Fixing block; 105-Threaded rod; 106-Limiting hole; 107-Limiting bolt; 108-Spring; 2-Second connecting assembly; 201-Mounting plate; 202-First mounting hole; 203-Second mounting hole; 3-Plug-in box; 4-Bus trunking. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] This embodiment proposes a connection device between a plug-in box and a busbar trunking, which aims to solve the safety hazards of inaccurate positioning, easy slippage, and deformation of locking feet in the existing pressure plate fixing method.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the core of this connecting device consists of a first connecting component 1 and a second connecting component 2, which work together to achieve rapid pre-clamping and final precise positioning, respectively.

[0028] The first connecting component 1 performs the functions of initial connection and clamping. It includes a fixed plate 101 and a telescopic component 102. The fixed end of the telescopic component 102 is mounted on the top and / or bottom of the plug-in box 3 via a fixing block 104, and its movable end is connected to one end of the fixed plate 101. In a preferred embodiment, the telescopic component 102 is specifically a threaded rod 105, one end of which is connected to the fixed plate 101 via a bearing or universal joint, and the other end passes through the fixing block 104. By rotating the locking nut sleeved on the threaded rod 105, the fixed plate 101 can be driven to move closer to or further away from the fixing block 104, thereby realizing telescopic movement. The other end of the fixed plate 101 is provided with a hook 103, which is designed to be L-shaped, J-shaped, or arc-shaped, with its opening facing the back of the plug-in box 3, for hooking onto the side edge of the busbar trough 4.

[0029] Working Principle and Optimization: When the locking nut is tightened, the fixing plate 101 is pulled towards the fixing block 104. At this time, the hook 103 slides along the side wall of the busbar 4 and finally locks, generating a strong clamping force that pulls the busbar 4 towards the back of the plug-in box 3. To ensure structural stability during this process, a waist-shaped limiting hole 106 is provided on the fixing plate 101, and a limiting bolt passes through this hole to connect it to the plug-in box 3. The waist-shaped hole allows the fixing plate 101 to have a suitable amount of sliding stroke during adjustment, while preventing excessive rotation or displacement. To further optimize the operating feel and absorb vibration, a spring 108 is also fitted on the threaded rod 105. This spring 108 is compressed between the fixing plate 101 and the fixing block 104, providing continuous preload and acting as a buffer. The fixing plate 101 adopts an L-shaped design, forming an effective lever, making the clamping force stronger. In addition, a roller can be installed on the inside of the hook 103 to change sliding friction to rolling friction, making the clamping operation more effortless and smooth.

[0030] The second connecting component 2 serves as the final positioning and rigid fixation component. It includes a mounting plate 201 fixedly installed on the back of the plug-in box 3. A first mounting hole 202 is pre-set at the corresponding position of the busbar trough 4, and a corresponding second mounting hole 203 is opened on the mounting plate 201.

[0031] Working principle and coordination: After the first connecting component 1 initially pulls the plug-in box 3 closer and clamps it onto the busbar trough 4, the second mounting hole 203 on the mounting plate 201 will be roughly aligned with the first mounting hole 202 on the busbar trough 4. At this time, plug-in components such as pins, bolts, or connecting rods can be used to pass through these two holes to complete the final, immovable rigid connection. To facilitate fine-tuning, the second mounting hole 203 can be designed as a strip hole, which greatly reduces the difficulty of hole alignment and ensures positioning accuracy.

[0032] Overall technical benefits: This device perfectly solves the shortcomings of traditional solutions through a two-step operation method of "pre-clamping the first connecting component and rigidly locking the second connecting component." The first connecting component 1 effectively prevents the plug-in box 3 from slipping during installation, creating conditions for the precise alignment of the second connecting component 2; while the second connecting component 2 bears the main load during long-term use, eliminating the risk of slippage due to gravity or external forces, fundamentally improving safety. To further enhance stability, this embodiment preferably sets one set of first connecting components 1 at the top and bottom of the plug-in box 3, forming symmetrical force distribution, making the connection more stable and reliable.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection device between a plug-in box and a busbar trunking, characterized in that: include The first connecting component (1) includes a fixed plate (101) and a telescopic member (102). The fixed end of the telescopic member (102) is connected to the top and / or bottom of the plug box (3). The movable end of the telescopic member (102) is connected to one end of the fixed plate (101). The other end of the fixed plate (101) is provided with a hook (103) that is slidably connected to the busbar groove (4) and clamps the busbar groove (4) toward the plug box (3). The second connection component (2) includes a mounting plate (201) mounted on the back of the plug box (3) and a first mounting hole (202) provided on the busbar trough (4). The mounting plate (201) is provided with a second mounting hole (203) corresponding to the first mounting hole (202).

2. The connection device between a plug-in box and a busbar trunking according to claim 1, characterized in that: The telescopic component is a threaded rod (105), one end of which is fixed to a fixing block (104) and passes through the fixing block (104) fixed to the plug box (3) and is bolted to the fixing plate (101).

3. The connection device between a plug-in box and a busbar trunking according to claim 2, characterized in that: The fixing plate (101) is provided with a limiting hole (106), and a limiting bolt (107) is installed in the limiting hole (106). The limiting bolt (107) passes through the fixing plate (101) and the fixing block (104) in sequence and is connected to the plug box (3).

4. The connection device between a plug-in box and a busbar trunking according to claim 3, characterized in that: The limiting hole (106) is waist-shaped.

5. A connection device between a plug-in box and a busbar trunking according to claim 2 or 3, characterized in that: A spring (108) is fitted on the threaded rod (105), and the spring (108) is located between the fixing plate (101) and the fixing block (104).

6. The connection device between a plug-in box and a busbar trunking according to claim 1, characterized in that: The fixing plate (101) is an L-shaped plate, including a first plate and a second plate that are perpendicular to each other. The first plate is connected to the movable end of the telescopic member (102), and the end of the second plate is provided with the hook (103).

7. A connection device between a plug-in box and a busbar trunking according to claim 1 or 6, characterized in that: The hook (103) is an L-shaped structure, a J-shaped structure or an arc-shaped structure, and the opening of the hook (103) is set facing the back of the plug box (3).

8. The connection device between a plug-in box and a busbar trunking according to claim 1, characterized in that: The second mounting hole (203) is connected to the first mounting hole (202) through a connector; the connector is a pin, bolt or connecting rod.

9. The connection device between a plug-in box and a busbar trunking according to claim 1, characterized in that: The first connecting component (1) is provided in two sets, corresponding to the top and bottom of the plug box (3) respectively.

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