Mining explosion-proof control box

Abstract

The utility model discloses a mining explosion-proof control box which comprises a control box body, the top of the control box body is fixedly provided with a wiring cavity cover plate, the front part of the control box body is hinged with a door plate through a hinge, two B1 explosion-proof cable access devices are arranged above one side of the control box body, and two B1 explosion-proof cable access devices are arranged above the other side of the control box body. The two sides and the rear portion of the control box body are respectively provided with a plurality of AB type anti-explosion cable access devices, and the two sides and the rear portion of the control box body are respectively provided with a plurality of AB type anti-explosion cable access devices. According to the mining explosion-proof control box, the B1 explosion-proof cable access device, the AB type explosion-proof cable access device and the explosion-proof optical cable through-wall terminal are all explosion-proof, so that the sealing effect at the line connection part of the control box body is better, and external explosive gas can be effectively prevented from entering the control box body through the line connection part; and normal use of elements in the control box body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of flameproof control boxes, in particular to a flameproof control box for mines. Background Art

[0002] The mining control box is used to cooperate with the mining operating table to realize manual operation and control of various mining electric control systems. It is usually mainly used for manual control of heavy-load, large-load, multi-motor-driven electromechanical equipment systems in mines with the danger of methane explosive gas and coal dust explosion. It is especially suitable for manual control of belt conveyor transmission and its protection system, hoist or winch transmission and its protection system, main pump room multiple pump centralized control system, etc.

[0003] However, during the use of the existing explosion-proof control box for mining, due to the poor sealing effect at the wiring of the control box, external explosive gas and coal dust enter the box through the gap between the wires and the box body, and all its components are located in the same explosion-proof cavity. Once an internal explosion occurs, all its components may be damaged, resulting in poor explosion-proof performance. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a flameproof control box for mining, which solves the problem that the sealing effect at the wiring of the control box is poor, resulting in external explosive gas and coal dust entering the interior of the box through the gap between the wires and the box body, and all the components therein are located in the same flameproof cavity. Once an internal explosion occurs, all the components therein may be damaged.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a mine explosion-proof control box, including a control box body, a wiring cavity cover plate is fixedly installed on the top of the control box body, a door panel is hinged on the front of the control box body through hinges, two B1 explosion-proof cable access devices are arranged above one side of the control box body, a number of AB type explosion-proof cable access devices are arranged on both sides and the rear of the control box body, a flameproof optical cable wall terminal is arranged on the top of the control box body, a number of first wiring terminals are arranged on the top of the control box body and on both sides of the flameproof optical cable wall terminal, a number of second wiring terminals are arranged on the top of the control box body and in front of the flameproof optical cable wall terminal, and a strong electric insulation cover is arranged at the front of the inner cavity of the control box body.

[0006] Preferably, a partition plate is fixedly connected between the two sides of the inner cavity of the control box body, a circuit board mounting plate is fixedly installed on the top of the partition plate, a main circuit board is fixedly installed on the top of the circuit board mounting plate, and a transformer is fixedly installed on the top of the partition plate and on one side of the circuit board mounting plate.

[0007] Preferably, a switch handle is fixedly mounted at the rear of one side of the control box body through an opening, and a flameproof copper sleeve is fixedly mounted on the outer surface of the switch handle.

[0008] Preferably, a combination switch is fixedly mounted on one side of the switch handle.

[0009] Preferably, a plurality of button rods are fixedly connected to the rear portion of the door panel through an opening, a mounting base is fixedly connected to the bottom of the inner cavity of the control box body, one end of the button rod is fixedly connected to the front portion of the mounting base, and a spring is sleeved on the outer surface of the button rod and located between the mounting base and the door panel.

[0010] Preferably, an observation window glass is fixedly mounted on the front portion of the door panel, and a display circuit board is arranged above the rear portion of the door panel.

[0011] Beneficial Effects

[0012] The utility model provides a mine flameproof control box. Compared with the existing technology, it has the following beneficial effects:

[0013] (1) The utility model adopts explosion-proof B1 explosion-proof cable access device, AB explosion-proof cable access device and flameproof optical cable wall terminal, which makes the sealing effect of the line connection of the control box body better, can effectively prevent external explosive gas from entering the control box body through the line connection, and ensure the normal use of the components in the control box body.

[0014] (2) The utility model separates the upper and lower parts of the control box body by a partition plate, which can effectively prevent the internal explosion from spreading to other locations and can effectively reduce the loss caused by the explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0016] Figure 2 It is a right side view of the structure of the utility model;

[0017] Figure 3 It is a top view of the B1 explosion-proof cable access device, AB type explosion-proof cable access device, flameproof optical cable wall terminal, first wiring terminal, second wiring terminal and strong electric insulation cover structure of the utility model;

[0018] Figure 4 It is a top view of the circuit board mounting plate and the main circuit board structure of the utility model;

[0019] Figure 5 It is a top view of the transformer, switch handle, flameproof copper sleeve and combination switch structure of the utility model;

[0020] Figure 6 For this utility model Figure 6 A partial enlarged view of the middle A;

[0021] Figure 7 It is a top view of the observation window glass and display circuit board structure of the utility model;

[0022] Figure 8 It is a front view of the structure of the explosion-proof optical cable wall terminal, the first wiring terminal and the second wiring terminal of the utility model.

[0023] In the figure: 1. Control box body; 2. Wiring cavity cover; 3. B1 explosion-proof cable access device; 4. AB type explosion-proof cable access device; 5. Flameproof optical cable wall terminal; 6. First wiring terminal; 7. Second wiring terminal; 8. Strong current insulation cover; 9. Circuit board mounting plate; 10. Main circuit board; 11. Transformer; 12. Partition plate; 13. Switch handle; 14. Flameproof copper sleeve; 15. Mounting base; 16. Push button rod; 17. Door panel; 18. Spring; 19. Observation window glass; 20. Display circuit board; 21. Combination switch. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-8 The utility model provides a technical solution: a mine flameproof control box, comprising a control box body 1, a wiring cavity cover plate 2 is fixedly installed on the top of the control box body 1, a door plate 17 is hinged on the front of the control box body 1 through a hinge, two B1 explosion-proof cable access devices 3 are arranged above one side of the control box body 1, and a plurality of AB type explosion-proof cable access devices 4 are arranged on both sides and the rear of the control box body 1, a flameproof optical cable wall terminal 5 is arranged on the top of the control box body 1, a plurality of first wiring terminals 6 are arranged on the top of the control box body 1 and on both sides of the flameproof optical cable wall terminal 5, a plurality of second wiring terminals 7 are arranged on the top of the control box body 1 and in front of the flameproof optical cable wall terminal 5, and a strong electric insulation cover 8 is arranged on the front of the inner cavity of the control box body 1.

[0026] Furthermore, a partition plate 12 is fixedly connected between the two sides of the inner cavity of the control box body 1, a circuit board mounting plate 9 is fixedly installed on the top of the partition plate 12, a main circuit board 10 is fixedly installed on the top of the circuit board mounting plate 9, a transformer 11 is fixedly installed on the top of the partition plate 12 and on one side of the circuit board mounting plate 9, a switch handle 13 is fixedly installed at the rear of one side of the control box body 1 through an opening, a flameproof copper sleeve 14 is fixedly installed on the outer surface of the switch handle 13, and a combination switch 21 is fixedly installed on one side of the switch handle 13.

[0027] Furthermore, a plurality of button rods 16 are fixedly connected to the rear of the door panel 17 through an opening, a mounting base 15 is fixedly connected to the bottom of the inner cavity of the control box body 1, one end of the button rod 16 is fixedly connected to the front of the mounting base 15, and a spring 18 is sleeved on the outer surface of the button rod 16 and located between the mounting base 15 and the door panel 17.

[0028] Furthermore, an observation window glass 19 is fixedly mounted on the front of the door panel 17 , and a display circuit board 20 is disposed above the rear of the door panel 17 .

[0029] When in use, the line-driven access port can be explosion-proofed through the B1 explosion-proof cable access device 3, the AB explosion-proof cable access device 4 and the explosion-proof optical cable wall terminal 5 on the control box body 1, and the transformer 11 can be controlled by controlling the switch handle 13. A flameproof copper sleeve 14 is provided at the connection of the switch handle 13 to make the switch handle 13 explosion-proof, and the display circuit board 20 inside the control box body 1 can be observed through the observation window glass 19.

Claims

1. A flameproof control box for mining, comprising a control box body (1), characterized in that: A wiring cavity cover plate (2) is fixedly mounted on the top of the control box body (1); a door plate (17) is hingedly connected to the front of the control box body (1) via hinges; two B1 explosion-proof cable access devices (3) are arranged above one side of the control box body (1); a plurality of AB type explosion-proof cable access devices (4) are arranged on both sides and the rear of the control box body (1); a flameproof optical cable wall terminal (5) is arranged on the top of the control box body (1); a plurality of first wiring terminals (6) are arranged on the top of the control box body (1) and on both sides of the flameproof optical cable wall terminal (5); a plurality of second wiring terminals (7) are arranged on the top of the control box body (1) and in front of the flameproof optical cable wall terminal (5); and a strong electrical insulation cover (8) is arranged at the front of the inner cavity of the control box body (1).

2. A mine flameproof control box according to claim 1, characterized in that: A partition plate (12) is fixedly connected between the two sides of the inner cavity of the control box body (1), a circuit board mounting plate (9) is fixedly mounted on the top of the partition plate (12), a main circuit board (10) is fixedly mounted on the top of the circuit board mounting plate (9), and a transformer (11) is fixedly mounted on the top of the partition plate (12) and on one side of the circuit board mounting plate (9).

3. A mine flameproof control box according to claim 1, characterized in that: A switch handle (13) is fixedly mounted on the rear of one side of the control box body (1) through an opening, and a flameproof copper sleeve (14) is fixedly mounted on the outer surface of the switch handle (13).

4. A mine flameproof control box according to claim 3, characterized in that: A combination switch (21) is fixedly mounted on one side of the switch handle (13).

5. The explosion-proof control box for mining according to claim 1 is characterized in that: The rear part of the door panel (17) is fixedly connected to a plurality of button rods (16) through an opening, the bottom of the inner cavity of the control box body (1) is fixedly connected to a mounting base (15), one end of the button rod (16) is fixedly connected to the front part of the mounting base (15), and a spring (18) is sleeved on the outer surface of the button rod (16) and located between the mounting base (15) and the door panel (17).

6. A mine flameproof control box according to claim 1, characterized in that: An observation window glass (19) is fixedly mounted on the front of the door panel (17), and a display circuit board (20) is arranged above the rear of the door panel (17).

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