Anti-loose bus duct plug-in box

Abstract

The application provides a kind of anti-loose bus duct plug-in box, belongs to the technical field of power distribution system, including bus duct, plug-in box and locking mechanism. The bus duct realizes stable support of power transmission through the shell and plug-in seat, the plug-in box completes the branch of electric energy delivery through the bottom plate, copper plate and plug-in column, the locking mechanism realizes quick and firm clamping fixation through the buckle seat and locking assembly. The application solves the problem that the existing bus duct plug-in box adopts bolt fixed connection, the bolt is loose due to vibration environment, the connection is not firm and the installation and disassembly are complicated. Through the design of the locking mechanism of guide inclined plane, triangular clamp and arc spring, combined with the quick operation of release assembly, the anti-loose connection and convenient disassembly of plug-in box and bus duct are realized. When installing, the plug-in column is inserted into the plug-in seat, and the buckle is automatically clamped under the action of spring; when disassembling, the release assembly can be quickly released by holding the handle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power distribution systems, in particular to a bus duct plug-in box with anti-loosening function. BACKGROUND

[0002] With the development of modern technology, high-rise buildings are increasing, and the power load in life is also gradually increasing. Plug-in boxes are widely used. The plug-in box is equivalent to a cable branch box and is mainly used for cable tapping and transfer. The power supply in the main line bus duct can be distributed to various power equipment through the switching elements in the plug-in box. The device is widely used in industrial plants, commercial buildings, data centers and other scenes, and its design needs to ensure the stability and safety of the connection to ensure the efficient operation of the power system.

[0003] At present, the existing bus duct plug-in box is mostly fixedly connected with the bus duct shell by bolts. This connection method has significant defects in some application scenarios. Since the bus duct is often used in a vibrating environment (such as near mechanical equipment or transportation hubs), long-term vibration can cause the bolts to loosen, thereby making the connection between the plug-in box and the bus duct not firm enough, affecting the stability and safety of power transmission. In addition, the installation and disassembly process of bolt fixation is relatively cumbersome, requiring special tools and taking a long time, which is not convenient for quick maintenance or replacement, reducing the use efficiency. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above and / or existing problems in the prior art, the present application is proposed.

[0006] Therefore, the technical problem to be solved by the present application is to overcome the problems of bolt loosening, connection not firm enough and cumbersome installation and disassembly caused by vibration when the existing bus duct plug-in box is fixedly connected by bolts, so as to improve the connection stability and maintenance efficiency.

[0007] To solve the above technical problems, the present application provides the following technical scheme: a bus duct plug-in box with anti-loosening function, comprising a bus duct, a plug-in box and a locking mechanism, wherein:

[0008] The bus duct comprises an outer shell, and a plug-in seat is fixedly installed at the top end of the outer shell;

[0009] The plug-in box comprises a bottom plate, a copper plate is fixedly installed on the upper surface of the bottom plate, a plug-in column is connected to the bottom end of the copper plate, and the plug-in column is arranged at the bottom of the bottom plate and is in plug-in connection with the plug-in seat.

[0010] The locking mechanism comprises buckle seats fixedly installed at the left and right ends of the outer shell, and locking assemblies fixedly installed at the left and right sides of the bottom end of the bottom plate, the buckle seat comprises fixed blocks symmetrically arranged front and back, limit blocks arranged below the two fixed blocks, and a clamping groove formed between the two fixed blocks and the limit blocks, the locking assembly comprises a first mounting block fixedly installed at the bottom of the bottom plate, a second mounting block fixedly connected to the bottom end of the first mounting block, a rotating cavity opened at the bottom end of the second mounting block, a round rod fixedly installed at the center of the rotating cavity, two staggered buckles rotatably connected to the outer surface of the round rod, and the bottom ends of the two buckles are respectively clamped at the left and right sides of the bottom end of the clamping groove, the two buckles are elastically connected by an arc spring, a release assembly is arranged between the first mounting block and the second mounting block, and the bottom end of the release assembly is in transmission connection with the two buckles.

[0011] As a preferred scheme of the anti-loose bus duct plug-in box, the upper side of the bottom plate is provided with a box cover, the box cover is fixedly connected with the bottom plate through bolts, and the copper plate is arranged in the interior of the box cover.

[0012] As a preferred scheme of the anti-loose bus duct plug-in box, the opposite sides of the two fixed blocks are provided with guide inclined surfaces, and the bottom ends of the two fixed blocks and the lower sides of the guide inclined surfaces are provided with planes.

[0013] As a preferred scheme of the anti-loose bus duct plug-in box, the bottom ends of the two buckles are provided with triangular clamping heads, the top planes of the two triangular clamping heads are in abutment with the planes at the bottom ends of the fixed blocks, and the bottom surfaces of the two triangular clamping heads are in abutment with the upper surfaces of the limit blocks.

[0014] As a preferred scheme of the anti-loose bus duct plug-in box, the left and right sides of the interiors of the first mounting block and the second mounting block are symmetrically provided with moving grooves, a cavity is arranged between the first mounting block and the second mounting block, and a limit rod is fixedly installed at the center of the cavity.

[0015] As a preferred scheme of the anti-loose bus duct plug-in box, the release assembly comprises toggle rods sleeved on the left and right ends of the limit rod, the top ends of the two toggle rods extend into the two moving grooves of the first mounting block, toggle plates are in transmission connection with the top ends of the two toggle rods, a connecting plate is fixedly connected to the front end of the toggle plate, a handle is fixedly connected to the front end of the connecting plate and extends to the exterior of the first mounting block, the bottom ends of the two toggle rods respectively penetrate the two moving grooves of the second mounting block and extend to the lower sides and abut against the outer side walls of the two buckles.

[0016] As a preferred scheme of the anti-loose bus duct plug-in box, two upper sides of the inside of the two said lever are provided with through grooves, the said lever plate comprises triangular blocks slidingly connected in the two said through grooves, the inner top walls of the two said through grooves are provided as arc surfaces, the inclined surfaces of the two said triangular blocks are respectively in abutment with the arc surfaces of the two said through grooves, the two said triangular blocks are fixedly connected through a connecting block, and the said connecting plate is fixedly connected at the front end of the connecting block.

[0017] As a preferred scheme of the anti-loose bus duct plug-in box, a disc is fixedly installed at the center of the said limiting rod, reset springs are fixedly connected at the left and right ends of the said disc, and the left and right ends of the two said reset springs are respectively fixedly connected with the outer walls of the two said lever.

[0018] As a preferred scheme of the anti-loose bus duct plug-in box, sliding grooves are respectively provided at the connecting positions of the two said lever and the said limiting rod, and rolling balls are respectively arranged in the two said sliding grooves, and the inner walls of the two said lever are slidingly connected with the outer wall of the said limiting rod through the rolling balls.

[0019] As a preferred scheme of the anti-loose bus duct plug-in box, an opening is provided at the front end of the said first mounting block, an elastic cavity is arranged above the said opening, a limiting plate is slidingly connected at the bottom end of the said elastic cavity, a baffle is connected at the bottom end of the said limiting plate, and the bottom end of the said baffle extends into the said opening and is fixedly connected with the upper surface of the said connecting plate.

[0020] The beneficial effects of the present application are as follows:

[0021] (1) The innovative design of the clamping and locking mechanism replaces the traditional bolt fixing method, effectively solving the problem of bolt loosening caused by the vibration environment. The precise cooperation of the clamping seat and the clamping and locking assembly, combined with the structural design of the guide inclined surface and the triangular clamping head, ensures that the plug-in box and the bus duct can maintain firm connection in a vibrating environment, greatly improving the stability and safety of power transmission, and is particularly suitable for high-vibration scenes such as industrial plants, mechanical equipment, and transportation hubs.

[0022] (2) The clamping and locking mechanism of the present application cooperates with the release assembly to realize the functions of quick installation and disassembly. During installation, the plug-in column is aligned with the plug-in seat and inserted, and the clamping buckle is automatically clamped and fixed under the rebounding force of the arc spring, without the need for special tools, and the operation is simple and efficient; during disassembly, the clamping buckle can be loosened by operating the release assembly through the handle, the whole process takes a short time, significantly improves the efficiency of maintenance and replacement, reduces the complexity and time cost of manual operation, and is suitable for power distribution scenes that require frequent maintenance

[0023] (3), the present application through the setting limiting rod, reset spring and ball etc. Component, ensure the smoothness and accuracy of the operation of the locking mechanism. Limiting rod restricts the moving direction of the lever, ball reduces friction, reset spring provides recovery force, makes the opening and closing action of the buckle more stable and reliable. These designs not only enhance the durability of the device, but also reduce the risk of jamming or failure caused by improper operation, further protect the reliability of long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0025] Figure 1 It is a perspective view of the overall structure of the present application;

[0026] Figure 2 It is a perspective view of the bottom plate and bus duct connection state of the present application;

[0027] Figure 3 It is a perspective view of the overall structure of the present application;

[0028] Figure 4 It is a perspective view of the bottom plate and buckle assembly of the present application;

[0029] Figure 5 It is a side view of the present application;

[0030] Figure 6 It is a structure enlarged view of the locking mechanism of the present application;

[0031] Figure 7 It is a perspective view of the locking mechanism of the present application;

[0032] Figure 8 It is a perspective view of the locking mechanism of the present application;

[0033] Figure 9 It is a structure enlarged view of the present application Figure 7 A structure enlarged view of the present application;

[0034] In the figure:

[0035] 100, bus duct; 101, outer shell; 102, plug-in seat;

[0036] 200, plug-in box; 201, bottom plate; 202, copper plate; 203, plug-in column; 204, box cover;

[0037] 300, latch mechanism; 301, buckle seat; 301a, fixed block; 301a1, guide slope; 301b, limiting block; 301c, clamping groove; 302, latch assembly; 302a, first mounting block; 302a1, opening; 302a2, telescopic cavity; 302b, second mounting block; 302c, rotating cavity; 302d, round rod; 302e, buckle; 302e1, triangular chuck; 302f, arc spring; 303, release assembly; 303a, push rod; 303a1, through slot; 303b, push plate; 303b1, triangular block; 303b2, connecting block; 303c, connecting plate; 303d, handle; 304, moving groove; 305, cavity; 306, limiting rod; 306a, sliding groove; 307, disc; 308, reset spring; 309, ball; 310, limiting plate; 311, baffle. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein, that the present application can be practiced with other than the described implementations, and that the present application can be practiced with different or additional components. Therefore, the specific details set forth in the following description are by way of examples and not intended to limit the present application.

[0040] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0041] Embodiments

[0042] Reference Figures 1-9The application provides a anti-loose bus duct plug-in box, comprising a bus duct 100, a plug-in box 200 and a locking mechanism 300. The bus duct 100 is the core component of the power distribution system, designed with a solid metal shell to protect the internal conductive bus and provide a stable mounting base, ensuring efficient power transmission and system safety. The plug-in box 200 serves as a connection device for branch circuits, precisely interfacing with the bus duct 100 to distribute main line power to various electrical equipment, meeting the diverse power needs of industrial plants, commercial buildings, data centers and other scenarios. Its design focuses on quick installation and stable connection. The locking mechanism 300 is the key structure for secure connection between the plug-in box 200 and the bus duct 100, replacing traditional bolt fixation with innovative clamping design to effectively prevent loosening in a vibrating environment, ensuring long-term reliability and safety, while simplifying the installation and removal process and improving maintenance efficiency. The three work together to form an efficient, stable and anti-loose power connection system.

[0043] Specifically, the bus duct 100 includes an outer shell 101 made of a solid metal material, which has good mechanical strength and corrosion resistance, and is used to protect the internal conductive bus and provide a stable mounting base, ensuring the safety of power transmission. The top end is fixedly installed with a plug-in seat 102, which is the core interface for power transmission and is designed precisely to ensure precise interfacing with the conductive parts of the plug-in box 200, thereby achieving efficient and stable power transmission.

[0044] The plug-in box 200 includes a bottom plate 201, which is the main support structure of the plug-in box 200 and is made of high-strength material, capable of bearing the weight of internal electrical components and resisting external impact. The upper surface of the bottom plate 201 is fixedly installed with a copper plate 202, which is the conductive core of the plug-in box 200 and is made of high-conductivity copper material to ensure efficient current transmission and low resistance loss. The bottom end of the copper plate 202 is connected with a plug-in column 203, which is arranged at the bottom of the bottom plate 201 and is connected with the plug-in seat 102. The plug-in column 203 is also made of high-conductivity material and is designed as a precise plug-in structure, facilitating quick alignment and installation and ensuring tight connection with the plug-in seat 102.

[0045] A box cover 204 is arranged above the bottom plate 201 and is fixedly connected with the bottom plate 201 by bolts. The box cover 204 is designed to be sealed, providing protection for the plug-in box 200 and preventing dust, moisture or foreign matter from entering the interior, thereby prolonging the service life of the device. The copper plate 202 is arranged inside the box cover 204 and is protected by the box cover 204, effectively avoiding the influence of external environment on its conductive performance and ensuring long-term reliability and safety.

[0046] The clamping mechanism 300 comprises a buckle seat 301 fixedly installed at the left and right ends of the outer shell 101 and a clamping assembly 302 fixedly installed at the left and right sides of the bottom end of the bottom plate 201. The buckle seat 301 and the clamping assembly 302 jointly constitute an anti-loose connection mechanism, which, through precise clamping design, ensures that the plug-in box 200 and the bus duct 100 can also maintain firm connection in a vibrating environment, avoiding connection failure caused by loose bolts. The buckle seat 301 comprises front and rear symmetrically arranged fixing blocks 301a, which are made of high-strength materials to provide stable clamping support and ensure reliability in long-term use.

[0047] A limiting block 301b is arranged directly below the two fixing blocks 301a, which is used to limit the movement range of the buckle 302e and prevent the buckle 302e from deviating in a vibrating environment, thereby enhancing the stability of the connection. A clamping groove 301c is formed between the two fixing blocks 301a and the limiting block 301b, which serves as the fitting space of the buckle 302e, and its precise geometric design ensures that the buckle 302e can be firmly embedded to achieve stable clamping fixation. The opposite faces of the two fixing blocks 301a are provided with guide inclined surfaces 301a1, which guide the smooth sliding of the buckle 302e during installation, reduce installation resistance, and improve installation efficiency. The bottom end of the two fixing blocks 301a and directly below the guide inclined surfaces 301a1 are provided with a flat surface, which ensures that the triangular clamping head 302e1 of the buckle 302e can be firmly abutted to form a stable clamping relationship.

[0048] The clamping assembly 302 comprises a first mounting block 302a fixedly installed at the bottom of the bottom plate 201, which serves as the main structure of the clamping assembly 302 and bears the installation of subsequent components and provides a stable support foundation. The bottom end is fixedly connected with a second mounting block 302b, which is used to support the rotating structure of the buckle 302e and ensure the flexible movement of the buckle 302e. The bottom end of the second mounting block 302b is provided with a rotating cavity 302c, which provides sufficient space for the central rotating component to ensure that the buckle 302e can rotate smoothly to complete the clamping or releasing action. A round rod 302d is fixedly installed at the center of the rotating cavity 302c, which serves as the rotating shaft of the buckle 302e and is made of wear-resistant material to ensure the rotating stability in long-term use.

[0049] The outer surface of the round rod 302d is rotationally connected with two staggered buckles 302e. The staggered design of the buckles 302e can effectively disperse the stress and improve the stability of the clamping. The bottom ends of the two buckles 302e are clamped on the left and right sides of the bottom end of the clamping groove 301c, forming a firm connection. The two buckles 302e are elastically connected by an arc-shaped spring 302f. The arc-shaped spring 302f provides elastic restoring force to ensure that the buckle 302e can tightly fit the clamping groove 301c after clamping is completed, enhancing the anti-loosening effect. The bottom end of each buckle 302e is provided with a triangular chuck 302e1. The top end plane of the triangular chuck 302e1 abuts against the plane at the bottom end of the fixed block 301a, ensuring the stability of the clamping. The bottom surface of the triangular chuck 302e1 abuts against the upper surface of the limiting block 301b, further limiting the up-and-down movement of the buckle 302e and enhancing the reliability of the connection.

[0050] A release assembly 303 is arranged between the first mounting block 302a and the second mounting block 302b. The bottom end of the release assembly 303 is drivingly connected with the two buckles 302e for controlling the opening and closing action of the buckles 302e to achieve quick disassembly. The first mounting block 302a and the second mounting block 302b are symmetrically provided with a moving groove 304 on the left and right sides inside. The moving groove 304 provides space for the movement of the release assembly 303 to ensure smooth movement. A cavity 305 is provided between the first mounting block 302a and the second mounting block 302b. A limiting rod 306 is fixedly installed at the center of the cavity 305. The limiting rod 306 is used to limit the movement direction of the release assembly 303 to ensure that it only moves in the horizontal direction and avoids deviation.

[0051] The release assembly 303 includes a toggle lever 303a slidingly sleeved on the left and right ends of the limiting rod 306. The toggle lever 303a realizes precise horizontal movement through the sliding design to control the opening and closing action of the buckle 302e. The top ends of the two toggle levers 303a extend into the two moving grooves 304 of the first mounting block 302a, respectively. A toggle plate 303b is drivingly connected to the top ends of the two toggle levers 303a. The toggle plate 303b serves as a transmission core to transmit operating force to the toggle lever 303a. A connecting plate 303c is fixedly connected to the front end of the toggle plate 303b. The front end of the connecting plate 303c extends to the outside of the first mounting block 302a and is fixedly connected with a handle 303d. The handle 303d is convenient for manual operation by workers, providing a comfortable gripping experience and simplifying the disassembly process.

[0052] The upper side of each of the two toggle levers 303a is provided with a through slot 303a1, the toggle plate 303b comprises triangular blocks 303b1 slidingly connected in the two through slots 303a1, the inner top wall of each of the two through slots 303a1 is provided as a circular arc surface, the circular arc surface is in abutment with the inclined surface of the triangular block 303b1, and the relative movement of the toggle lever 303a is realized through the inclined surface guiding effect. The two triangular blocks 303b1 are fixedly connected through a connecting block 303b2, the connecting plate 303c is fixedly connected to the front end of the connecting block 303b2, and the overall stability of the transmission is ensured. The center of the limiting rod 306 is fixedly installed with a disc 307, the left and right ends of the disc 307 are fixedly connected with return springs 308, and the left and right ends of the return springs 308 are fixedly connected with the outer walls of the two toggle levers 303a, respectively, to provide a restoring force to ensure that the toggle lever 303a is reset after release. Through the setting of the limiting rod 306, it is ensured that the toggle lever 303a can only move horizontally, and the deviation affecting the operation accuracy is avoided.

[0053] The connection part of each of the two toggle levers 303a with the limiting rod 306 is provided with a sliding groove 306a, and the sliding groove 306a is provided with a ball 309. The ball 309 reduces the friction through rolling, ensures the smoothness of the horizontal movement of the toggle lever 303a, and avoids the jamming affecting the closing effect of the buckle 302e. The front end of the first mounting block 302a is provided with an opening 302a1, the upper side of the opening 302a1 is provided with an expansion cavity 302a2, the bottom end of the expansion cavity 302a2 is slidingly connected with a limiting plate 310, the bottom end of the limiting plate 310 is connected with a baffle 311, the bottom end of the baffle 311 extends into the opening 302a1 and is fixedly connected with the upper surface of the connecting plate 303c, and the limiting plate 310 and the baffle 311 jointly limit the movement range of the connecting plate 303c, ensuring the stability of the operation.

[0054] It should be noted that the sum of the elastic force of the arc spring 302f after compression and the elastic force of the return spring 308 after compression is less than the overall gravity of the plug-in box 200, so when the worker holds the handle 303d and lifts it upward, the handle 303d can first drive the connecting plate 303c and the actuating plate 303b to move upward. During the upward movement of the actuating plate 303b, the actuating rods 303a are driven to move to the inside of the moving groove 304 under the guidance of the inclined surfaces on the two end triangular blocks 303b1, the two actuating rods 303a form relative movement, the bottom end clamps the two buckles 302e, and the two buckles 302e are close to each other, and the triangular clamping heads 302e1 at the bottom end of the two buckles 302e move to the center of the clamping groove 301c, so as to be separated from the flat surface at the bottom end of the two fixed blocks 301a. During this process, the arc spring 302f is compressed and squeezed by the two buckles 302e, and the two return springs 308 are compressed and squeezed by the two actuating rods 303a. At this time, without the limiting clamping of the buckle 302e and the fixed block 301a, the worker can directly dismount the plug-in box 200 from the bus duct 100, and the entire dismounting process is extremely simple, and can be completed by only holding the handle 303d and lifting the plug-in box 200.

[0055] When it is necessary to install the plug-in box 200 on the bus duct 100, the worker only needs to insert the plug-in column 203 at the bottom end of the bottom plate 201 into the plug-in seat 102 on the upper surface of the bus duct outer shell 101 after aligning, so as to complete the butt joint installation. During the insertion of the plug-in column 203, the buckle 302e at the bottom end of the bottom plate 201 is also inserted into the clamping groove 301c. During the insertion, the bottom end of the two buckles 302e is first squeezed inward under the action of the guide inclined surface 301a1 of the fixed block 301a, the two buckles 302e are close to each other and squeeze the arc spring 302f. When the triangular clamping heads 302e1 at the bottom end of the two buckles 302e are completely inserted into the clamping groove 301c, the elastic force of the arc spring 302f makes the two triangular clamping heads 302e1 pop open to the two sides, the top end flat surface abuts against the flat surface at the bottom end of the fixed block 301a, a firm clamping and fixing relationship is formed, and thus the overall installation work is completed. This design effectively avoids the defect that the traditional bolt connection is loose due to vibration, and simultaneously simplifies the installation and dismounting process, improves the use efficiency and reliability.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A busbar duct plug-in box designed to prevent loosening, characterized in that: include, The busbar trunking (100) includes a housing (101), and a plug-in socket (102) is fixedly installed on the top of the housing (101). A plug-in box (200) includes a base plate (201), on the upper surface of which a copper plate (202) is fixedly mounted. A plug-in post (203) is connected to the bottom end of the copper plate (202). The plug-in post (203) is located at the bottom of the base plate (201) and is plugged into the plug-in socket (102). The locking mechanism (300) includes latch seats (301) fixedly installed at the left and right ends of the outer casing (101), and locking assemblies (302) fixedly installed on the left and right sides of the bottom end of the base plate (201). The latch seats (301) include fixing blocks (301a) symmetrically arranged front and back, and limiting blocks (301b) are provided directly below the two fixing blocks (301a). A slot (301c) is formed between the two fixing blocks (301a) and the limiting blocks (301b). The locking assembly (302) includes a first mounting block (302a) fixedly installed at the bottom of the base plate (201), and a second mounting block (302) is fixedly connected to the bottom end of the first mounting block (302a). (b) The bottom end of the second mounting block (302b) is provided with a rotating cavity (302c). A round rod (302d) is fixedly installed at the center of the rotating cavity (302c). The outer surface of the round rod (302d) is rotatably connected to two staggered buckles (302e). The bottom ends of the two buckles (302e) are respectively engaged with the left and right sides of the bottom end of the slot (301c). The two buckles (302e) are elastically connected by an arc spring (302f). A release component (303) is provided between the first mounting block (302a) and the second mounting block (302b). The bottom end of the release component (303) is connected to the two buckles (302e) in a transmission manner. The first mounting block (302a) and the second mounting block (302b) have symmetrical moving grooves (304) on their left and right sides. A cavity (305) is formed between the first mounting block (302a) and the second mounting block (302b). A limit rod (306) is fixedly installed at the center of the cavity (305). The release assembly (303) includes a lever (303a) slidably sleeved on the left and right ends of the limiting rod (306). The top ends of the two levers (303a) extend into the two moving slots (304) of the first mounting block (302a), and the top ends of the two levers (303a) are connected to a lever plate (303b). The front end of the lever plate (303b) is fixedly connected to a connecting plate (303c). The front end of the connecting plate (303c) extends to the outside of the first mounting block (302a) and is fixedly connected to a handle (303d). The bottom ends of the two levers (303a) pass through the two moving slots (304) of the second mounting block (302b) and extend below them to abut against the outer walls of the two buckles (302e).

2. The anti-loosening busbar duct plug-in box as described in claim 1, characterized in that: A box cover (204) is provided above the base plate (201). The box cover (204) is fixedly connected to the base plate (201) by bolts, and the copper plate (202) is located inside the box cover (204).

3. The anti-loosening busbar duct plug-in box as described in claim 2, characterized in that: The opposing surfaces of the two fixing blocks (301a) are configured as guide slopes (301a1), and the bottom ends of the two fixing blocks (301a) located directly below the guide slopes (301a1) are configured as planes.

4. The anti-loosening busbar duct plug-in box as described in claim 3, characterized in that: The bottom ends of the two buckles (302e) are provided with triangular clips (302e1), the top planes of the two triangular clips (302e1) abut against the bottom plane of the fixing block (301a), and the bottom surfaces of the two triangular clips (302e1) abut against the upper surface of the limiting block (301b).

5. The anti-loosening busbar duct plug-in box as described in claim 4, characterized in that: Both of the two actuating levers (303a) have through slots (303a1) on their upper sides. The actuating plate (303b) includes triangular blocks (303b1) that are slidably connected inside the two through slots (303a1). The inner top walls of the two through slots (303a1) are both set as arc surfaces, and the inclined surfaces of the two triangular blocks (303b1) abut against the arc surfaces of the two through slots (303a1). The two triangular blocks (303b1) are fixedly connected by a connecting block (303b2), and the connecting plate (303c) is fixedly connected to the front end of the connecting block (303b2).

6. The anti-loosening busbar duct plug-in box as described in claim 5, characterized in that: A disc (307) is fixedly installed at the center of the limiting rod (306). A return spring (308) is fixedly connected to both the left and right ends of the disc (307), and the left and right ends of the two return springs (308) are respectively fixedly connected to the outer walls of the two actuating rods (303a).

7. The anti-loosening busbar duct plug-in box as described in claim 6, characterized in that: Each of the two actuating rods (303a) is provided with a sliding groove (306a) at the connection point with the limiting rod (306), and each of the two sliding grooves (306a) is provided with a ball (309). The inner walls of the two actuating rods (303a) are slidably connected to the outer wall of the limiting rod (306) through the ball (309).

8. The anti-loosening busbar trunking plug-in box as described in claim 7, characterized in that: The first mounting block (302a) has an opening (302a1) at its front end. A telescopic cavity (302a2) is provided above the opening (302a1). A limiting plate (310) is slidably connected to the bottom end of the telescopic cavity (302a2). A baffle (311) is connected to the bottom end of the limiting plate (310), and the bottom end of the baffle (311) extends into the opening (302a1) and is fixedly connected to the upper surface of the connecting plate (303c).

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