Explosion-proof cable junction box
By introducing structures such as limit rings and elastic components into the explosion-proof cable junction box, the self-locking problem of the cable joint is solved, achieving stable cable connection and sealing performance, reducing the risk of electrical faults, and adapting to different environments.
Patent Information
- Application Number
- CN202423164090.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-21
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-21
AI Technical Summary
The lack of self-locking function in existing explosion-proof cable junction boxes increases operational complexity and the risk of electrical faults. In particular, the cables are prone to loosening in workplaces with frequent vibrations or harsh environments, leading to poor contact, short circuits, and the entry of harmful gases.
An explosion-proof cable junction box was designed. Through structures such as a limit ring, elastic component, sealing ring, limit plate, ball, limit block, spring and sliding ring, the cable achieves self-locking connection, enhances sealing performance and structural stability, and adapts to different installation environments.
It achieves stable cable connection, improves sealing performance and structural stability, reduces the risk of electrical faults, simplifies maintenance, and adapts to different installation environments.
Smart Images
Figure CN223613001U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable terminal box technical field especially relates to a kind of explosion-proof cable terminal box. BACKGROUND
[0002] In the field of petrochemical industry, coal mine, pharmaceutical manufacturing, aerospace and ocean engineering, to ensure the safe operation of electrical equipment in extreme environment, explosion-proof cable terminal box is used to connect and protect electrical circuit device, especially designed for flammable and explosive environment, to reduce the risk of electrical spark or flame explosion.
[0003] In prior art, the significant technical deficiency in the design of part of explosion-proof cable terminal box is that cable joint lacks self-locking function, which means that after completing cable connection, manual operation is necessary to ensure the stability of joint, which not only increases the complexity of operation, but also may cause incorrect fixation of joint due to human negligence, thereby increasing the risk of electrical failure, especially in frequently vibrating or harsh environment workplace, non-self-locking joint is more likely to loosen, thereby causing poor contact, short circuit or spark generation, harmful gas entry, which seriously threatens the safety of site, therefore, an explosion-proof cable terminal box is proposed to solve the above problems. SUMMARY
[0004] The utility model provides an explosion-proof cable terminal box, to improve the problem that cable joint cannot be self-locked in explosion-proof cable terminal box.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] An explosion-proof cable terminal box, comprising a terminal box, a plurality of connecting pipes are fixedly connected to the outside of the terminal box, a limiting ring is fixedly connected to the inside of the connecting pipe, an elastic force assembly is fixedly connected to the outside of the limiting ring, a sealing ring is slidably connected to the inside of the connecting pipe, a cable is fixedly connected to the outside of the sealing ring, a limiting plate is fixedly connected to the inside of the connecting pipe, a plurality of balls are fixedly connected to the inside of the connecting pipe, a limiting block is fixedly connected to the outside of the connecting pipe, a spring No.
[0007] Specifically, the explosion-proof cable terminal box fixes the sealing ring in the connecting pipe through the limiting ring and the elastic force assembly, ensures the stable connection of the cable, the limiting plate and the ball design reduces friction, improves sealing performance, the external limiting block, spring No.
[0008] As a further description of the above technical scheme:
[0009] The elastic component includes a spring one, the other end of the spring one is fixedly connected with a connecting block, and the outside of the spring one is fixedly connected outside the limiting ring;
[0010] Specifically, the elastic component provides stable and adjustable elastic support through the design of the spring one and the connecting block. The spring one is fixed outside the limiting ring, which ensures the effective sliding of the sealing ring in the connecting pipe and maintains the tightness of the cable connection.
[0011] As a further description of the above technical solution:
[0012] The sealing cover is fixedly connected outside the junction box, and a plurality of bolts are fixedly connected outside the sealing cover.
[0013] Specifically, the junction box realizes efficient waterproof and dustproof function through the sealing cover and the plurality of bolts fixedly connected outside. The sealing cover closely fits the junction box, ensuring the safe operation of the internal components and prolonging the service life of the equipment.
[0014] As a further description of the above technical solution:
[0015] The junction box is fixedly connected with a connecting plate at the top, and a plurality of terminal posts are fixedly connected outside the connecting plate.
[0016] Specifically, the junction box realizes efficient electrical connection through the design of the connecting plate at the top and the plurality of terminal posts. The terminal posts are arranged reasonably, facilitating the access of multiple cables, improving the wiring efficiency, and ensuring the reliability and safety of electrical connection.
[0017] As a further description of the above technical solution:
[0018] The junction box is fixedly connected with a plurality of connecting rings one inside, and a plurality of connecting rods are fixedly connected outside the connecting rings one.
[0019] Specifically, the junction box realizes flexible expansion and fixing function through the plurality of connecting rings one and the connecting rods fixedly connected outside. The design of the connecting rings one and the connecting rods enhances the connection stability of the junction box and other equipment.
[0020] As a further description of the above technical solution:
[0021] The connecting rod is fixedly connected with a connecting ring two at the bottom, and a plurality of spring clamping blocks are slidingly connected outside the connecting ring two.
[0022] Specifically, the junction box realizes quick clamping and releasing of the cable through the design of the connecting ring two at the bottom of the connecting rod and the slidingly connected spring clamping blocks. The spring clamping blocks provide stable clamping force, ensuring the firmness of the cable connection. The sliding connection mode facilitates the adjustment of the clamping position and adapts to different specifications of the cable.
[0023] As a further description of the above technical solutions:
[0024] The outer part of the spring clamp block is fixedly connected to the outer part of the connecting ring two.
[0025] Specifically, the combination of the spring clamp block and the spring three in the junction box realizes stable clamping and elastic support of the cable, the spring clamp block provides reliable clamping force to ensure the firmness of the cable connection, and the elasticity of the spring three is increased to adapt to the slight movement of the cable and reduce stress concentration.
[0026] As a further description of the above technical solutions:
[0027] The outer part of the spring clamp block is fixedly connected to the outer part of the connecting ring two.
[0028] Specifically, the combination of the spring clamp block and the spring three in the junction box realizes stable clamping and elastic support of the cable, the spring clamp block provides reliable clamping force to ensure the firmness of the cable connection, and the elasticity of the spring three is increased to adapt to the slight movement of the cable and reduce stress concentration.
[0029] The utility model has the advantages of the following beneficial effects:
[0030] 1. In the utility model, when the cable enters the connecting pipe, the sliding ring drives the spring two to move, the cable drives the ball to move, and then the adapter block drives the spring one to move, so that the cable enters the junction box, and the spring one drives the adapter block to move, thereby realizing self-locking after the cable and the connecting pipe are quickly spliced, preventing harmful gas from entering by enhancing the sealing property, thereby protecting the internal elements, improving the reliability and simplifying the maintenance work.
[0031] 2. In the utility model, when the cable is placed, the spring clamp block drives the spring three to move, and then the spring clamp block drives the spring three to slide, so that the spring clamp block tightly clamps the cable, ensures the stability of the electrical connection, prevents loosening and poor contact caused by vibration or external force, and improves the safety and adaptability. DRAWINGS
[0032] Figure 1 A three-dimensional structure schematic diagram of the explosion-proof cable junction box is provided for the utility model;
[0033] Figure 2 A connecting pipe structure schematic diagram of the explosion-proof cable junction box is provided for the utility model;
[0034] Figure 3 A ball structure schematic diagram of the explosion-proof cable junction box is provided for the utility model;
[0035] Figure 4 A connecting ring two structure schematic view of the explosion-proof cable junction box is provided in the utility model.
[0036] Figure 5 A spring three structure schematic view of the explosion-proof cable junction box is provided in the utility model.
[0037] Legend:
[0038] 1, junction box;2, connecting pipe;3, limiting ring;4, spring one;5, link block;6, sealing ring;7, cable;8, limiting plate;9, ball;10, limiting block;11, spring two;12, sliding ring;13, sealing cover;14, bolt;15, connecting plate;16, junction column;17, connecting ring one;18, connecting rod;19, connecting ring two;20, spring clamp block;21, spring three. Specific implementation
[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0040] Reference Figures 1 to 3 An embodiment provided by the utility model: an explosion-proof cable junction box, comprising a junction box 1, the junction box 1 is made of stainless steel, aluminum alloy, carbon steel and full plastic material, prevents explosive gas and dust from entering. The junction box 1 is fixedly connected with a plurality of connecting pipes 2 outside, the connecting pipes 2 are evenly distributed around the junction box 1, are used to lead in and lead out the cable 7, the inside is finely processed, ensures that the cable 7 can pass smoothly. The inside of the connecting pipe 2 is fixedly connected with a limiting ring 3, the limiting ring 3 is located at the middle of the connecting pipe 2, plays the role of limiting the moving range of the cable 7, prevents the cable 7 from excessively sliding in the pipe. The outside of the limiting ring 3 is fixedly connected with an elastic spring assembly, the inside of the connecting pipe 2 is slidingly connected with a sealing ring 6, the sealing ring 6 is made of high-temperature-resistant and aging-resistant rubber material, can tightly fit the outer wall of the cable 7, effectively prevents external gas and liquid from entering the inside of the junction box 1.
[0041] The outer part of the sealing ring 6 is fixedly connected with the cable 7, which is connected with the electrical elements inside the junction box 1 through the sealing ring 6 to realize the transmission of signals or power. The inner part of the connecting pipe 2 is fixedly connected with the limiting plate 8, which is located at the end of the connecting pipe 2 to further limit the movement range of the cable 7 and ensure the stability of the cable 7 in the connecting pipe 2. The inner part of the connecting pipe 2 is fixedly connected with a plurality of ball bearings 9, which are evenly distributed on both sides of the limiting plate 8. When the cable 7 moves in the connecting pipe 2, the ball bearings 9 can reduce the friction between the cable 7 and the pipe wall, thereby prolonging the service life of the cable 7. The outer part of the connecting pipe 2 is fixedly connected with the limiting block 10, the outer part of the limiting block 10 is fixedly connected with the spring 2 11, the outer part of the spring 2 11 is fixedly connected with the sliding ring 12, and the elastic force assembly includes the spring 1 4, the other end of the spring 1 4 is fixedly connected with the connecting block 5, and the outer part of the spring 1 4 is fixedly connected to the outer part of the limiting ring 3.
[0042] Referring to Figure 2 , Figure 4 , Figure 5 The outer part of the junction box 1 is fixedly connected with the sealing cover 13, the outer part of the sealing cover 13 is fixedly connected with a plurality of bolts 14, the top of the junction box 1 is fixedly connected with the connecting plate 15, the connecting plate 15 is a rectangular flat plate structure, which is made of the same material as the junction box 1, and is used to install and fix various electrical elements and the connecting post 16. The outer part of the connecting plate 15 is fixedly connected with a plurality of connecting posts 16, the connecting posts 16 are cylindrical metal pieces, the surface of which is treated with a plating layer to prevent oxidation and corrosion, and are used to realize the connection between the cable 7 and the electrical elements inside the junction box 1. The inner part of the junction box 1 is fixedly connected with a plurality of connecting rings 1 7, the connecting rings 1 7 are circular metal pieces, the inner diameter of which is slightly larger than the outer diameter of the connecting rods 18, so that the cable 7 can smoothly pass through and be fixed thereon.
[0043] The outer part of the connecting ring 1 7 is fixedly connected with a plurality of connecting rods 18, the bottom of the connecting rod 18 is fixedly connected with the connecting ring 2 19, the outer part of the connecting ring 2 19 is slidingly connected with a plurality of spring clamping blocks 20, the spring clamping blocks 20 are U-shaped metal pieces, the open end of which is sleeved outside the connecting ring 2 19, and is kept in close contact with the connecting ring 2 19 through the spring 3 21. The outer part of the spring clamping block 20 is provided with the spring 3 21, which is a compression spring, one end of which is fixed on the spring clamping block 20, and the other end of which is fixed on the connecting ring 2 19, and is used to provide elastic force to keep the position of the spring clamping block 20 stable. The outer part of the spring 3 21 is fixedly connected to the outer part of the connecting ring 2 19, and this connection mode enables the spring 3 21 to freely stretch and shrink when subjected to external force, while keeping close connection with the connecting ring 2 19. The outer part of the spring clamping block 20 is slidingly connected to the outer part of the connecting ring 2 19, and the other end of the spring clamping block 20 is slidingly connected to the outer part of the connecting ring 1 7.
[0044] Working principle: first cable 7 through the connecting pipe 2 is introduced and connected to the electrical elements in the junction box 1 inside, connecting pipe 2 inside is equipped with limiting ring 3 and sealing ring 6, limiting ring 3 is located in the middle of connecting pipe 2, for limiting the moving range of cable 7, prevent its in pipe excessive sliding, sealing ring 6 is closely attached to the outer wall of cable 7, when cable 7 is connected to connecting pipe 2, self locking process starts to start, first, the adapter block 5 and limiting ring 3 contact and firmly connected together through the fixed mechanism, at the same time, spring one 4 is compressed, elastic force acts between the adapter block 5 and limiting ring 3, increase their tightness, in this process, limiting plate 8 further limits the moving range of cable 7, ensure its stability in connecting pipe 2, the ball 9 is distributed on both sides of limiting plate 8, reduce the friction between cable 7 and pipe wall;
[0045] Cable 7 enters the device inside through the inlet of connecting pipe 2, then passes through the inside of connecting ring one 17, because the inner diameter of connecting ring one 17 is slightly larger than the outer diameter of connecting rod 18, therefore, cable 7 can smoothly pass through and be fixed on connecting rod 18, contact the bottom of connecting rod 18, outside connecting ring two 19, a plurality of spring clamping blocks 20 are slidably connected, when cable 7 contacts spring clamping block 20, due to the force of spring three 21, spring clamping block 20 will tightly clamp cable 7, so that it cannot move, at the same time, spring three 21 is a compression spring, one end is fixed on spring clamping block 20, the other end is fixed on connecting ring two 19, this connection mode makes spring three 21 can freely stretch and shrink when subjected to external force, while maintaining the close connection with connecting ring two 19, therefore, even if cable 7 is subjected to external force, spring clamping block 20 can maintain stable position, in addition, because the design of spring clamping block 20 can adapt to different specifications and sizes of cable 7, therefore, it has high universality and flexibility.
[0046] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.
Claims
1. An explosion-proof cable terminal box comprising a terminal box (1), characterized in that: The outside of the junction box (1) is fixedly connected with a plurality of connecting pipes (2), the inside of the connecting pipe (2) is fixedly connected with a limiting ring (3), the outside of the limiting ring (3) is fixedly connected with an elastic force assembly for providing elasticity, the inside of the connecting pipe (2) is slidably connected with a sealing ring (6), the outside of the sealing ring (6) is fixedly connected with a cable (7), the inside of the connecting pipe (2) is fixedly connected with a limiting plate (8), the inside of the connecting pipe (2) is fixedly connected with a plurality of ball bearings (9), the outside of the connecting pipe (2) is fixedly connected with a limiting block (10), the outside of the limiting block (10) is fixedly connected with a spring (11), and the outside of the spring (11) is fixedly connected with a sliding ring (12).
2. An explosion-proof cable terminal box according to claim 1, characterized in that: The elastic force assembly comprises a spring (4), one end of the spring (4) is fixedly connected with an adapter block (5), and the outside of the spring (4) is fixedly connected outside the limiting ring (3).
3. An explosion-proof cable terminal box according to claim 1, characterized in that: The outside of the junction box (1) is fixedly connected with a sealing cover (13), and the outside of the sealing cover (13) is fixedly connected with a plurality of bolts (14).
4. An explosion-proof cable terminal box according to claim 1, characterized in that: The top of the junction box (1) is fixedly connected with a connecting plate (15), and the outside of the connecting plate (15) is fixedly connected with a plurality of junction columns (16).
5. An explosion-proof cable terminal box according to claim 1, characterized in that: The inside of the junction box (1) is fixedly connected with a plurality of connecting rings (17), and the outside of the connecting ring (17) is fixedly connected with a plurality of connecting rods (18).
6. An explosion-proof cable terminal box according to claim 5, characterized in that: The bottom of the connecting rod (18) is fixedly connected with a connecting ring (19), and the outside of the connecting ring (19) is slidably connected with a plurality of spring clamping blocks (20).
7. An explosion-proof cable terminal box according to claim 6, characterized in that: The outside of the spring clamping block (20) is provided with a spring (21), and the outside of the spring (21) is fixedly connected outside the connecting ring (19).
8. An explosion-proof cable terminal box according to claim 6, characterized in that: The outside of the spring clamping block (20) is slidably connected outside the connecting ring (19), and the other end of the spring clamping block (20) is slidably connected outside the connecting ring (17).