An explosion-proof junction box with cable fixing structure

Abstract

This utility model discloses an explosion-proof junction box with a cable fixing structure, applied in the field of explosion-proof junction box technology. It includes a box body, a housing bolted to one side of the bottom of the box body, a hand crank movably connected to the surface of the housing, a threaded rod welded to the back of the hand crank, a threaded sleeve threaded to the surface of the threaded rod, sliding plates bolted to both sides of the threaded sleeve, a push post bolted to one side of the sliding plate, a push post extending to the outside of the housing and welded to another push post, a limit block welded to the surface of the push post, a limit plate bolted to the other side of the bottom of the box body, and a connection port at the center of the bottom of the box body. This utility model, through the housing, threaded rod, threaded sleeve, sliding plate, push post, push plate, limit block, and limit plate, facilitates the limiting and fixing of connected cables, preventing the cables from loosening and falling off during use.

Description

Technical Field

[0001] This utility model belongs to the technical field of explosion-proof junction boxes, and specifically relates to an explosion-proof junction box with a cable fixing structure. Background Technology

[0002] An explosion-proof junction box is a special electrical device that meets explosion-proof safety standards. It is made of high-strength, corrosion-resistant materials (such as stainless steel, cast aluminum, glass fiber unsaturated polyester, etc.) and has explosion-proof and sealing performance. It is mainly used to connect, distribute and control wires and cables in flammable and explosive environments. Its core function is to prevent the risk of external explosion caused by sparks or high temperatures generated by internal electrical components. Existing explosion-proof junction boxes typically use explosion-proof materials for the outer shell, which can withstand internal explosion pressure without breaking, preventing the explosion from spreading outward. They also have excellent sealing performance to prevent external flammable and explosive gases and dust from entering the box. Furthermore, components such as terminals and switches are explosion-proof to avoid sparks during connection or operation. Built-in protective devices (such as circuit breakers and surge arresters) can quickly cut off fault current or limit overvoltage to prevent the accident from escalating. However, in actual use, the following problems exist: the inability to limit and fix the wiring cables leads to them easily becoming loose, tangled, and knotted during use. Additionally, accidental contact during maintenance can easily cause the cables to detach. Therefore, we propose an explosion-proof junction box with a cable fixing structure to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide an explosion-proof junction box with a cable fixing structure, which has the advantage of making it easy to limit and fix the cable, thus improving the stability of the cable connection.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an explosion-proof junction box with a cable fixing structure includes a box body, a housing is bolted to one side of the bottom of the box body, a hand crank is movably connected to the surface of the housing, a threaded rod is welded to the back of the hand crank, a threaded sleeve is threadedly connected to the surface of the threaded rod, sliding plates are bolted to both sides of the threaded sleeve, a push post is bolted to one side of the sliding plate, a push post is welded to one side of the push post extending to the outside of the housing, a limit block is welded to the surface of the push post, a limit plate is bolted to the other side of the bottom of the box body, and a connection port is opened at the center of the bottom of the box body.

[0005] The above technical solution, through the housing, threaded rod, threaded sleeve, sliding plate, push column, push plate, limit block and limit plate, facilitates the limiting and fixing of the connected cable, preventing the connected cable from loosening and falling off during use, thereby improving the stability of the cable connection.

[0006] The present invention is further configured such that a screw hole is provided on the surface of the limiting plate, a locking bolt is threaded into the inner cavity of the screw hole, a first bearing is movably connected to one side of the locking bolt, and a limiting pad is welded to one side of the first bearing.

[0007] The above technical solution, through screw holes, locking bolts, a first bearing, and a limiting washer, facilitates secondary fixation of the connected cables, making it easier for staff to inspect and maintain them, and improving the efficiency of cable fixing.

[0008] The present invention is further configured such that limiting grooves are provided on both sides of the inner cavity of the housing, and one side of the sliding plate is slidably connected to the inner cavity of the limiting groove.

[0009] By adopting the above technical solution, the sliding plate can slide in its inner cavity through the limiting groove, which improves the stability of the sliding plate.

[0010] The present invention is further configured such that a second bearing is welded to the side of the inner cavity of the housing, and one side of the threaded rod is rotatably connected to the inner cavity of the second bearing.

[0011] The above technical solution improves the stability of the threaded rod rotation by using a second bearing.

[0012] The present invention is further configured such that a door is movably connected to the surface of the box body, and a handle is welded to the surface of the door.

[0013] The above technical solution facilitates the maintenance and inspection of electrical components inside the enclosure through the door and handle, improving the maintenance efficiency of staff and the utilization efficiency of electrical components.

[0014] The present invention is further configured such that a through hole is provided on the side of the inner cavity of the housing, and the surface of the push column is attached to the inner wall of the through hole.

[0015] The above technical solution improves the stability of the sliding of the push column by using through holes.

[0016] In summary, this utility model has the following beneficial effects: 1. The housing, threaded rod, threaded sleeve, sliding plate, push column, push plate, limit block and limit plate facilitate the limiting and fixing of the connected cable, preventing the connected cable from loosening and falling off during use, thereby improving the stability of the cable connection; 2. The screw holes, locking bolts, first bearing, and limiting pads facilitate secondary fixing of the connected cables, making it easy for staff to inspect and maintain them, thus improving the efficiency of cable fixing. The limiting groove allows the sliding plate to slide within its inner cavity, improving the stability of the sliding plate. The second bearing improves the stability of the threaded rod rotation. The door and handle facilitate the maintenance and inspection of the electrical components inside the enclosure, improving the maintenance efficiency of staff and also improving the utilization efficiency of the electrical components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of the box of this utility model; Figure 3 This is a cross-sectional view of the overall shell structure of this utility model; Figure 4 This is a schematic diagram of the overall structure of the limiting plate of this utility model.

[0018] Reference numerals in the attached drawings: 1. Box body; 2. Shell; 3. Hand crank; 4. Limiting plate; 5. Connection port; 6. Limiting pad; 7. First bearing; 8. Locking bolt; 9. Limiting block; 10. Push plate; 11. Pushing column; 12. Limiting groove; 13. Threaded sleeve; 14. Threaded rod; 15. Sliding plate; 16. Threaded hole. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1: refer to Figure 1-4 An explosion-proof junction box with a cable fixing structure includes a box body 1. A housing 2 is bolted to one side of the bottom of the box body 1. A hand crank 3 is movably connected to the surface of the housing 2. A threaded rod 14 is welded to the back of the hand crank 3. A threaded sleeve 13 is threadedly connected to the surface of the threaded rod 14. Sliding plates 15 are bolted to both sides of the threaded sleeve 13. A push post 11 is bolted to one side of the sliding plate 15. A push plate 10 is welded to one side of the push post 11, extending through to the outside of the housing 2. A limit block 9 is welded to the surface of the push plate 10. A limit plate 4 is bolted to the other side of the bottom of the box body 1. A connection port 5 is opened at the center of the bottom of the box body 1.

[0021] Furthermore, limiting grooves 12 are provided on both sides of the inner cavity of the housing 2. One side of the sliding plate 15 is slidably connected to the inner cavity of the limiting groove 12. Through the limiting groove 12, the sliding plate 15 can slide in its inner cavity, which improves the sliding stability of the sliding plate 15.

[0022] Furthermore, a second bearing is welded to the side of the inner cavity of the housing 2, and one side of the threaded rod 14 is rotatably connected to the inner cavity of the second bearing. The second bearing improves the stability of the rotation of the threaded rod 14.

[0023] Furthermore, a door is movably connected to the surface of the enclosure 1, and a handle is welded to the surface of the door. The door and handle facilitate the maintenance and inspection of the electrical components inside the enclosure 1, improving the maintenance efficiency of the staff and also improving the utilization efficiency of the electrical components.

[0024] Furthermore, a through hole is provided on the side of the inner cavity of the housing 2, and the surface of the push column 11 is attached to the inner wall of the through hole. The through hole improves the stability of the sliding of the push column 11.

[0025] Example 2: refer to Figure 2 An explosion-proof junction box with a cable fixing structure includes a limiting plate 4 with a screw hole 16 on its surface. A locking bolt 8 is threaded into the inner cavity of the screw hole 16. A first bearing 7 is movably connected to one side of the locking bolt 8. A limiting washer 6 is welded to one side of the first bearing 7. The screw hole 16, locking bolt 8, first bearing 7 and limiting washer 6 facilitate secondary fixing of the connected cables, making it easier for staff to inspect and maintain the cables, and improving the efficiency of cable fixing.

[0026] Brief description of usage: First, the user connects the cable to connector 5. Then, the user holds the hand crank 3, which rotates the threaded rod 14. Since the threads on the surface of the threaded rod 14 and the threads in the inner cavity of the threaded sleeve 13 are threadedly connected, the rotation of the threaded rod 14 causes the threaded sleeve 13 to move. The threaded sleeve 13 then moves the sliding plate 15, which in turn pushes the push column 11, which in turn pushes the push plate 10, which in turn pushes the limiting block 9. The movement of the limiting block 9 pushes the cable to fit against the surface of the limiting plate 4, facilitating the limiting and fixing of the connected cable and preventing the cable from slipping. During use, the cable may loosen and fall off, thus improving the stability of the cable connection. Then, the user can rotate the locking bolt 8 by turning it. The locking bolt 8 rotates in the inner cavity of the screw hole 16 and the first bearing 7. Since the threads on the surface of the locking bolt 8 and the threads in the inner cavity of the screw hole 16 are threadedly connected, the locking bolt 8 can move itself when it rotates. The movement of the locking bolt 8 pushes the first bearing 7 to move, and the first bearing 7 pushes the limiting pad 6 to move. The movement of the limiting pad 6 limits and fixes the connecting cable on the surface of the connection port 5, which facilitates secondary fixation of the connected cable, makes it easier for staff to inspect and maintain it, and improves the efficiency of cable fixation.

[0027] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An explosion-proof terminal box having a cable fixing structure, comprising a box body (1), characterized in that: A shell (2) is bolted to one side of the bottom of the box (1). A hand crank (3) is movably connected to the surface of the shell (2). A threaded rod (14) is welded to the back of the hand crank (3). A threaded sleeve (13) is threaded to the surface of the threaded rod (14). A sliding plate (15) is bolted to both sides of the threaded sleeve (13). A push column (11) is bolted to one side of the sliding plate (15). A push plate (10) is welded to one side of the push column (11) extending to the outside of the shell (2). A limit block (9) is welded to the surface of the push plate (10). A limit plate (4) is bolted to the other side of the bottom of the box (1). A connection port (5) is opened at the center of the bottom of the box (1).

2. The explosion-proof junction box with cable fixing structure according to claim 1, characterized in that: The surface of the limiting plate (4) is provided with a screw hole (16), and the inner cavity of the screw hole (16) is threaded with a locking bolt (8). A first bearing (7) is movably connected to one side of the locking bolt (8), and a limiting pad (6) is welded to one side of the first bearing (7).

3. The explosion-proof junction box with cable fixing structure according to claim 1, characterized in that: The inner cavity of the housing (2) has a limiting groove (12) on both sides, and one side of the sliding plate (15) is slidably connected to the inner cavity of the limiting groove (12).

4. The explosion-proof junction box with cable fixing structure according to claim 1, characterized in that: A second bearing is welded to the side of the inner cavity of the housing (2), and one side of the threaded rod (14) is rotatably connected to the inner cavity of the second bearing.

5. The explosion-proof junction box with cable fixing structure according to claim 1, characterized in that: The surface of the box (1) is movably connected to a box door, and a handle is welded to the surface of the box door.

6. The explosion-proof junction box with cable fixing structure according to claim 1, characterized in that: The inner cavity of the housing (2) has a through hole on the side, and the surface of the push column (11) is attached to the inner wall of the through hole.

Images