Dustproof and explosion-proof switch box for mine

Abstract

This utility model relates to the field of switch box technology, specifically a dustproof and explosion-proof switch box for mining. It includes a box body with inlet slots on both sides. A hinged seat is fixedly connected to the front surface of the box body, and a door is hinged to the inner surface of the hinged seat. This utility model facilitates the use of a second U-shaped clamp to hold external wires, preventing the wires from coming loose due to tension when pulled. Pulling the snap-fit ​​plate upwards along the guide post positions it behind the connecting strip, allowing the door to be fixed while the wire is being held, increasing the practicality of the clamping mechanism. It also helps create a sealed environment inside the box. Sulfur hexafluoride gas has excellent insulation properties; filling the box with sulfur hexafluoride gas through a valve effectively improves the insulation performance inside the box, preventing short circuits and arcing during operation, and enhancing the explosion-proof effect and reliability of the switch box.

Description

Technical Field

[0001] This utility model relates to the field of switch box technology, specifically a dustproof and explosion-proof switch box for mining. Background Technology

[0002] A mining switch box is a device specifically designed for use in explosive environments such as coal mines. It is primarily used to control and protect motors, transformers, lighting equipment, and transmission devices in a power system by adding components. Refer to announcement number CN221596274U for a mining vacuum feeder switch with explosion-proof properties, which relates to the field of mining switch technology. This utility model includes a support assembly comprising a vacuum feeder switch body and cable lead-out pipes installed at both ends of the vacuum feeder switch body; and a moving assembly disposed on the support assembly. The moving assembly includes a fixing plate fixed to the upper end of the vacuum feeder switch body, a long slot formed in the fixing plate, and a connecting block inserted into the long slot.

[0003] The above-mentioned device solves the problem that unsealed cable outlet pipes can easily cause flammable gases, liquids or dust to enter the equipment and generate dangerous sparks or energy in the electrical equipment. However, the use of multiple motors for driving increases the cost of the device and affects its practicality. Utility Model Content

[0004] The purpose of this utility model is to provide a dustproof and explosion-proof switch box for mining, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dustproof and explosion-proof switch box for mining includes a box body, with cable inlet grooves on both sides of the box body, a hinge seat fixedly connected to the front surface of the box body, and a door hinged to the inner surface of the hinge seat.

[0007] An electric push rod is fixedly connected inside the housing. A connecting strip is fixedly connected to the output end of the electric push rod. A wire clamping mechanism is provided on the upper surface of the housing. The wire clamping mechanism includes a rotating shaft, a gear, a rack, a guide seat, a movable seat, a first U-shaped clamp, and a second U-shaped clamp. The rotating shaft is rotatably connected to the upper surface of the housing. The gear is fixedly connected to the upper end of the rotating shaft. There are two racks that are meshed with the outer surface of the gear. The guide seat is fixedly connected to the upper surface of the housing. The movable seat is fixedly connected to one end of the rack. A fastening knob is threaded onto the side surface of the movable seat. The first U-shaped clamp is embedded and movably connected to the outer surface of the movable seat. The second U-shaped clamp is fixedly connected to the inner wall of the housing and the corresponding position of the first U-shaped clamp.

[0008] Furthermore, the upper surface of the housing is detachably connected to a top cover, and the upper surface of the top cover is threaded with bolts, and the top cover is threadedly connected to the housing via bolts.

[0009] Furthermore, the upper surface of the housing is threaded with several conductive mechanisms, each including a threaded seat, a copper pillar, and a connecting bolt. The threaded seat is threaded to the upper surface of the housing, and a gasket is nested at the contact position between the threaded seat and the housing. The copper pillar is embedded and fixedly connected inside the threaded seat, and through holes are opened at both ends of the copper pillar. The connecting bolt is threaded to the upper and lower end faces of the copper pillar.

[0010] Furthermore, push plates are fixedly connected to both ends of the connecting strip, and the push plates are fixedly connected to one of the racks.

[0011] Furthermore, the upper surface of the door is embedded with a guide post, the upper surface of the guide post is fixedly connected with a snap-fit ​​plate, and the inner side of the connecting strip contacts the snap-fit ​​plate.

[0012] Furthermore, two valves are embedded in the side surface of the housing, and the valves are used to assist in filling with sulfur hexafluoride gas.

[0013] Furthermore, one end of the fastening knob abuts against the first U-shaped clamp, and the rack and guide seat are slidably connected.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The motor push rod drives the connecting bar to move backward, causing the connecting bar to press one of the racks to move. Since the two racks and gears mesh, the other rack moves synchronously, which allows the moving seat to drive the first U-shaped clamp to move. This helps to cooperate with the second U-shaped clamp to clamp the external wires and prevents the wiring position from falling off when the external wires are pulled. Pull the snap plate upward along the guide post so that the snap plate is behind the connecting bar. This allows the box door to be fixed through the connecting bar while clamping the wires, increasing the practicality of the wire clamping mechanism.

[0016] 2. The threaded connection between the threaded seat and the enclosure ensures a secure installation of the conductive mechanism. Simultaneously, the gasket enhances the seal, preventing external dust and moisture from entering the enclosure from the top, thus improving its dustproof and waterproof performance and creating a sealed environment inside. Sulfur hexafluoride gas has excellent insulating properties; filling the enclosure with sulfur hexafluoride gas through the valve effectively improves the internal insulation, preventing short circuits and arcing during operation, and enhancing the explosion-proof effect and reliability of the switch box. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the door structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the wire clamping mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the conductive mechanism of this utility model.

[0021] In the diagram: 1. Housing; 101. Cable inlet trough; 102. Top cover; 2. Hinge seat; 201. Door; 202. Snap-fit ​​plate; 203. Guide post; 3. Valve; 4. Connecting strip; 401. Push plate; 5. Cable clamping mechanism; 501. Guide seat; 502. Rack; 503. Moving seat; 504. Fastening knob; 505. First U-shaped clamp; 506. Second U-shaped clamp; 507. Rotating shaft; 508. Gear; 6. Conductive mechanism; 601. Threaded seat; 602. Gasket; 603. Copper column; 604. Wiring bolt; 605. Through hole; 7. Electric push rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] Please see Figure 1-4 In this embodiment of the utility model, a dustproof and explosion-proof switch box for mining includes a box body 1. The two sides of the box body 1 are provided with inlet grooves 101. The front surface of the box body 1 is fixedly connected with a hinge seat 2. The inner surface of the hinge seat 2 is hinged with a box door 201.

[0024] An electric push rod 7 is fixedly connected inside the housing 1. A connecting strip 4 is fixedly connected to the output end of the electric push rod 7. A wire clamping mechanism 5 is provided on the upper surface of the housing 1. The wire clamping mechanism 5 includes a rotating shaft 507, a gear 508, a rack 502, a guide seat 501, a movable seat 503, a first U-shaped clamp 505, and a second U-shaped clamp 506. The rotating shaft 507 is rotatably connected to the upper surface of the housing 1. The gear 508 is fixedly connected to the upper end of the rotating shaft 507. There are two racks 502, which are meshed with the outer surface of the gears 508. The guide seat 501 is fixedly connected to the upper surface of the housing 1. The movable seat 503 is fixedly connected to one end of the rack 502. A fastening knob 504 is threadedly connected to the side surface of the movable seat 503. The first U-shaped clamp 505 is embedded and movably connected to the outer surface of the movable seat 503. The second U-shaped clamp 506 is fixedly connected to the inner wall of the housing 1 and the corresponding position of the first U-shaped clamp 505.

[0025] Specifically, during use, the external wire enters the upper part of the housing 1 through the inlet slot 101, then the housing door 201 is closed, and then the switch on the upper surface of the automatic top cover 102 is pressed to start the electric push rod 7. The motor push rod 7 drives the connecting bar 4 to move backward, causing the connecting bar 4 to squeeze one of the racks 502 to move. Since the two racks 502 mesh with the gear 508, the other rack 502 moves synchronously, which allows the moving seat 503 to drive the first U-shaped clamp 505 to move. This is beneficial for cooperating with the second U-shaped clamp 506 to clamp the external wire, avoiding the problem of the wiring position falling off when the external wire is pulled. There are two sets of clamping mechanisms 5, which are symmetrically distributed about the central axis of the housing 1.

[0026] Example 1

[0027] like Figure 1-4 As shown, a top cover 102 is detachably connected to the upper surface of the housing 1. Bolts are threaded onto the upper surface of the top cover 102, and the top cover 102 is threadedly connected to the housing 1 via bolts.

[0028] In this embodiment, the top cover 102 seals the upper part of the box 1 to prevent objects from falling directly into the upper space of the box 1. At the same time, the threaded connection facilitates the disassembly and installation of the top cover 102, making it convenient for maintenance and repair of the upper part of the box 1.

[0029] like Figure 2-4 As shown, push plates 401 are fixedly connected to both ends of the connecting strip 4. The push plates 401 are fixedly connected to one of the racks 502. A guide post 203 is movably connected to the upper surface of the door 201. A snap-fit ​​plate 202 is fixedly connected to the upper surface of the guide post 203. The inner side of the connecting strip 4 contacts the snap-fit ​​plate 202. One end of the fastening knob 504 abuts against the first U-shaped clamp 505. The rack 502 and the guide seat 501 are slidably connected.

[0030] In this embodiment, rotating the fastening knob 504 causes one end of the fastening knob 504 to separate from the first U-shaped clamp 505 under the push of the thread. At this time, the length of the first U-shaped clamp 505 extending out of the moving seat 503 can be adjusted to compensate for the movement of the rack 502, making it easier for the first U-shaped clamp 505 and the second U-shaped clamp 506 to clamp the wire. By adjusting the extension length of the first U-shaped clamp 505, it can adapt to wires of different diameters, enhancing the versatility and flexibility of the clamping mechanism. When the box door 201 is closed, the snap-fit ​​plate 202 is pulled upward along the guide post 203, so that the snap-fit ​​plate 202 is located behind the connecting strip 4. This allows the box door 201 to be fixed by the connecting strip 4 while clamping the wire, increasing the practicality of the clamping mechanism 5.

[0031] Example 2

[0032] Based on Example 1, in order to make up for the problem of poor sealing of box 1 in Example 1.

[0033] like Figure 1-4 As shown, the upper surface of the housing 1 is threaded with several conductive mechanisms 6. The conductive mechanism 6 includes a threaded seat 601, a copper pillar 603, and a connecting bolt 604. The threaded seat 601 is threaded to the upper surface of the housing 1. A gasket 602 is nested at the contact position between the threaded seat 601 and the housing 1. The copper pillar 603 is embedded and fixedly connected inside the threaded seat 601. Through holes 605 are opened at both ends of the copper pillar 603. The connecting bolt 604 is threaded to the upper and lower end faces of the copper pillar 603.

[0034] In this embodiment, the conductive mechanism 6 is securely installed through the threaded connection between the threaded seat 601 and the housing 1. At the same time, the gasket 602 can enhance the sealing performance, preventing external dust and moisture from entering the interior of the housing 1 from the top, thus improving the dustproof and waterproof performance of the housing. The structure of the copper pillar 603 and the wiring bolt 604 facilitates the connection and fixation of the wires, ensuring the reliability of the electrical connection. By inserting the core of the wire into the through hole 605 and then tightening the wiring bolt 604, the wire and the copper pillar 603 can be tightly connected, which helps to form a sealed environment inside the housing 1 and improves the dustproof effect inside the housing 1.

[0035] like Figure 4 As shown, two valves 3 are embedded and connected to the side surface of the housing 1. The valves 3 are used to assist in filling sulfur hexafluoride gas.

[0036] In this embodiment, sulfur hexafluoride gas has excellent insulation properties. By filling the box with sulfur hexafluoride gas through valve 3, the insulation performance inside the box can be effectively improved, preventing short circuits and arcing of electrical equipment during operation, and enhancing the explosion-proof effect and reliability of the switch box.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dustproof and explosion-proof switch box for mining, comprising a box body (1), wherein cable inlet grooves (101) are provided on both sides of the box body (1), and a hinge seat (2) is fixedly connected to the front surface of the box body (1), and a box door (201) is hinged to the inner surface of the hinge seat (2). characterized in that An electric push rod (7) is fixedly connected inside the housing (1), and a connecting strip (4) is fixedly connected to the output end of the electric push rod (7). A wire clamping mechanism (5) is provided on the upper surface of the housing (1), and the wire clamping mechanism (5) includes: The rotating shaft (507) is rotatably connected to the upper surface of the housing (1); Gear (508) is fixedly connected to the upper end of shaft (507); Two racks (502) are meshed with the outer surface of the gear (508); The guide seat (501) is fixedly connected to the upper surface of the housing (1); A movable seat (503) is fixedly connected to one end of a rack (502), and a fastening knob (504) is threadedly connected to the side surface of the movable seat (503); The first U-shaped clamp (505) is embedded in and movably connected to the outer surface of the movable base (503); The second U-shaped clamp (506) is fixedly connected to the inner wall of the box (1) and the corresponding position of the first U-shaped clamp (505).

2. The mining dustproof and explosion-proof switch box according to claim 1, characterized in that, The upper surface of the housing (1) is detachably connected to a top cover (102), and the upper surface of the top cover (102) is threaded with bolts. The top cover (102) is threadedly connected to the housing (1) by bolts.

3. The mining dustproof and explosion-proof switch box according to claim 1 or 2, characterized in that, The upper surface of the housing (1) is threaded with several conductive mechanisms (6), the conductive mechanisms (6) including: A threaded seat (601) is threadedly connected to the upper surface of the housing (1), and a gasket (602) is nested at the contact position between the threaded seat (601) and the housing (1); A copper pillar (603) is embedded and fixedly connected to the inside of a threaded seat (601), and through holes (605) are provided at both ends of the copper pillar (603); The wiring bolt (604) is threaded to the upper and lower ends of the copper column (603).

4. The mine dustproof and explosion-proof switch box according to claim 1, characterized in that, The two ends of the connecting strip (4) are fixedly connected to push plates (401), and the push plates (401) are fixedly connected to one of the racks (502).

5. The mine dustproof and explosion-proof switch box according to claim 1, characterized in that, The upper surface of the door (201) is embedded with a guide post (203), and the upper surface of the guide post (203) is fixedly connected with a snap-fit ​​plate (202). The inner side of the connecting strip (4) is in contact with the snap-fit ​​plate (202).

6. The mining dustproof and explosion-proof switch box according to claim 1, characterized in that, Two valves (3) are embedded in the side surface of the housing (1), and the valves (3) are used to assist in filling sulfur hexafluoride gas.

7. The mine dustproof and explosion-proof switch box according to claim 1, characterized in that, One end of the fastening knob (504) abuts against the first U-shaped clamp (505), and the rack (502) and guide seat (501) are slidably connected.

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