Anti-explosion electric cabinet structure of mining monorail crane

Abstract

The utility model discloses an explosion-proof electric control box structure of a mining monorail crane. The explosion-proof electric control box structure comprises a box body, a cavity is formed in the box body and comprises a box body main cavity and a wiring cavity which are communicated with each other and are positioned on the same horizontal plane; the side, away from the main cavity of the box body, of the wiring cavity is provided with a cable lead-in device, the box body is provided with a hole site matched with the cable lead-in device, and the cable lead-in device is installed on the hole site. A radiator is arranged on the side, away from the wiring cavity, of the box body main cavity and installed on the side wall of the box body. A front panel is installed on the front side, corresponding to the box body main cavity, of the box body, and a display screen, an emergency stop button, an operation panel and a change-over switch are arranged on the front panel. According to the explosion-proof electric cabinet structure of the mining monorail crane, the conventional mode that the wiring cavity and the main cavity of the cabinet body are arranged up and down is changed, and a left-right parallel mode is adopted, so that the balance of the cabinet body is better realized, the maintenance is on the same horizontal line, and the explosion-proof electric cabinet structure is suitable for the application occasion of a storage battery monorail crane in a mine containing gas (methane) and coal dust explosion; the application prospect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to an explosion-proof electric control box structure for a mining monorail crane, and in particular to an explosion-proof electric control box structure for a mining monorail crane for controlling the safe and efficient operation of a monorail transport locomotive in an underground lane of a coal mine. Background Art

[0002] The mining monorail crane was originally driven by diesel, and the driving control room of the mining monorail crane used a hand-pushed control lever to realize the forward and backward movement of the mining monorail crane locomotive. In addition to the defects of high fuel consumption, high noise, heavy pollution, and low efficiency, the current diesel-driven mining monorail crane also has the following defects: 1) The mining monorail crane operates in the underground tunnels of coal mines. Due to the constraints of ventilation conditions and space, the carbon monoxide, hydrocarbons, sulfur dioxide and particulates generated during the operation of the diesel engine are too harmful; 2) The explosion-proof diesel engine and its ancillary devices - starting device, cooling system, intake system and exhaust purification system, hydraulic system and electrical monitoring system, etc., are complicated and have high maintenance costs. In addition, the cooling and conduction performance of the box is poor, which is easily affected by external interference, and the system may be damaged and endanger personnel safety. With the development of the times, the electrification of drive equipment is constantly advancing, and the electric drive of mining monorail cranes is an inevitable trend. In order to support the electric drive of mining monorail cranes, the structure of the electric drive unit needs to be redesigned. At the same time, due to its specific working environment - in an environment with explosive gases such as acetylene and hydrogen, higher requirements are placed on the safety of the electric drive unit. How to ensure that the electric control box works safely, stably, effectively and continuously in an explosive gas environment is an urgent problem that needs to be solved.

[0003] Therefore, it is of great practical significance to develop an electric control box structure for mining monorail cranes with good flameproof performance and good structural stability. Utility Model Content

[0004] Due to the above-mentioned defects in the prior art, the utility model provides an explosion-proof electric control box structure for a mining monorail crane with good flameproof performance and good structural stability.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A mining monorail crane explosion-proof electric control box structure, comprising a box body;

[0007] The box body is provided with a cavity, and the cavity includes a box body main cavity and a wiring cavity which are interconnected and located on the same horizontal plane;

[0008] A cable entry device is provided on the wiring cavity away from the main cavity of the box body, a hole matching the cable entry device is provided on the box body and the cable entry device is installed on the hole;

[0009] A radiator is provided on the side of the main cavity of the box away from the wiring cavity, and the radiator is installed on the side wall of the box;

[0010] A front panel is arranged on the front side of the box body corresponding to the main cavity of the box body, and a display screen, an emergency stop button, an operation panel and a conversion switch are arranged on the front panel.

[0011] The utility model discloses an explosion-proof electric control box structure for a mining monorail crane, which can arrange an IGBT module, a filter capacitor, a PLC component, a relay, an intrinsically safe power supply and a switching power supply in the main cavity of the box body, and provides heat dissipation for the equipment in the main cavity of the box body by installing a radiator away from the wiring cavity side. The utility model changes the conventional upper and lower arrangement mode of the wiring cavity and the main cavity of the box body, and adopts a left-right parallel mode, which better realizes the balance of the box body and the inspection and maintenance are on a horizontal line. The utility model is suitable for mines containing gas (methane) and coal dust explosions, and is suitable for battery monorail cranes, trackless rubber-wheeled vehicles and other occasions, and has good application prospects.

[0012] As the preferred technical solution:

[0013] As described above, the explosion-proof electric control box structure for a mining monorail crane, the main chamber and the wiring chamber of the box body are both cubic structures;

[0014] The main cavity of the box body is flush with the bottom surface of the wiring cavity, and the top surface of the main cavity of the box body is higher than the top surface of the wiring cavity.

[0015] As described above, in a mining monorail crane explosion-proof electric control box structure, the front panel is also provided with a main cavity front handle and the front panel is fixed to the box body by a hinge. The front panel can be easily opened through the main cavity front handle, which is convenient for operators to inspect and maintain.

[0016] As described above, in a mining monorail crane explosion-proof electric control box structure, a wiring cavity front panel is installed on the front side of the box body corresponding to the wiring cavity, and a wiring cavity front handle is provided on the wiring cavity front panel. The presence of the wiring cavity front handle greatly facilitates the operator's maintenance and operation.

[0017] As described above, in the explosion-proof electric control box structure for a mining monorail crane, the cable introduction device includes a B2 interface, an A1 interface, an A3 interface, an A2 interface and a B4 interface. Of course, those skilled in the art can select the interface type and the specific number of interfaces according to actual needs.

[0018] As described above, in the explosion-proof electric control box structure for a mining monorail crane, the following wiring terminals are arranged in the wiring cavity: JF8 interface, JF16 interface, JD9 interface, JZ8-W interface, and JZ30 interface. Of course, those skilled in the art can select the interface type and the specific number of interfaces according to actual needs.

[0019] In the explosion-proof electric control box structure of a mining monorail crane as described above, a plurality of hooks are installed on the top of the box and the plurality of hooks are evenly distributed on the top of the box, and the box can be hung at a suitable position through the hooks.

[0020] As described above, an explosion-proof electric control box structure for a mining monorail crane, wherein an IGBT module, a filter capacitor, a PLC component, a relay, an intrinsically safe power supply and a switching power supply are arranged in the main cavity of the box;

[0021] The display screen, emergency stop button, operation panel and conversion switch are electrically connected to the PLC components respectively.

[0022] The above technical solution is only a feasible technical solution of the present utility model, and the protection scope of the present utility model is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0023] The above utility model has the following advantages or beneficial effects:

[0024] (1) The explosion-proof electric control box structure of the mining monorail crane of the utility model can arrange the IGBT module, filter capacitor, PLC component, relay, intrinsically safe power supply, and switching power supply in the main cavity of the box, and provide heat dissipation for the equipment in the main cavity of the box by installing a radiator away from the wiring cavity side;

[0025] (2) The utility model of the explosion-proof electric control box structure for mining monorail crane changes the conventional mode of upper and lower arrangement of the wiring chamber and the main chamber of the box body, and adopts a left-right parallel mode, which better realizes the balance of the box body and the inspection and maintenance are carried out on a horizontal line. It is suitable for mines containing gas (methane) and coal dust explosions, and is suitable for battery monorail cranes, rubber-wheeled trackless vehicles and other occasions. It is not restricted or affected by the ground conditions of the tunnel, has a large climbing angle, and can travel on undulating slopes with large slopes and many bends, realizing continuous and rapid transportation of heavy loads, and realizing continuous transportation of equipment, personnel and materials from the wellhead to the working face without relocation, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0027] Figure 1 It is a top view of the explosion-proof electric control box structure of the mining monorail crane of the utility model;

[0028] Figure 2 This is a front view of the explosion-proof electric control box structure of a mining monorail crane of the utility model;

[0029] Figure 3 This is a right view of the explosion-proof electric control box structure of the mining monorail crane of the utility model;

[0030] Figure 4 is a schematic diagram of the wiring surface in the wiring cavity;

[0031] Figure 5 It is a schematic diagram of the front panel of the main cavity of the box;

[0032] Among them, 1 is the main cavity of the box, 2 is the wiring cavity, 3 is the cable entry device, 4 is the radiator, 5 is the B2 interface, 6 is the A1 interface, 7 is the A3 interface, 8 is the A2 interface, 9 is the B4 interface, 10 is the JF8 interface, 11 is the JF16 interface, 12 is the JD9 interface, 13 is the JZ8-W interface, 14 is the JZ30 interface, 15 is the display screen, 16 is the emergency stop button, 17 is the operation panel, 18 is the conversion switch, 19 is the front handle of the main cavity, 20 is the front handle of the wiring cavity, and 21 is the hook on the box. DETAILED DESCRIPTION

[0033] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0034] Example 1

[0035] A mining monorail crane explosion-proof electric control box structure, such as Figures 1 to 3 As shown, including a box body;

[0036] A cavity is opened in the box, and the cavity includes a box main cavity 1 and a wiring cavity 2 which are interconnected and located at the same level. The box main cavity 1 and the wiring cavity 2 are both cubic structures. The bottom surfaces of the box main cavity 1 and the wiring cavity 2 are flush, and the top surface of the box main cavity 1 is higher than the top surface of the wiring cavity 2.

[0037] The main chamber 1 of the box is equipped with IGBT modules, filter capacitors, PLC components, relays, intrinsically safe power supplies and switching power supplies;

[0038] A cable entry device 3 is provided on the side of the wiring cavity 2 away from the main cavity 1 of the box body. A hole matching the cable entry device 3 is provided on the box body and the cable entry device 3 is installed on the hole. The cable entry device 3 includes a B2 interface 5, an A1 interface 6, an A3 interface 7, an A2 interface 8 and a B4 interface 9. Figure 4 As shown, the wiring cavity 2 is provided with the following wiring terminals: JF8 interface 10, JF16 interface 11, JD9 interface 12, JZ8-W interface 13, JZ30 interface 14;

[0039] A radiator 4 is provided on the side of the main chamber 1 of the box body away from the wiring chamber 2, and the radiator 4 is installed on the side wall of the box body;

[0040] A front panel is installed on the front side of the box body corresponding to the main cavity 1 of the box body, and the front panel is fixed to the box body by a hinge. Figure 5 As shown, a display screen 15, an emergency stop button 16, an operation panel 17, a conversion switch 18 and a main chamber front handle 19 are provided on the front panel, and the display screen 15, the emergency stop button 16, the operation panel 17 and the conversion switch 18 are electrically connected to the PLC components respectively;

[0041] A wiring cavity front panel is installed on the front side of the box body corresponding to the wiring cavity 2, and a wiring cavity front handle 20 is provided on the wiring cavity front panel;

[0042] A plurality of upper hooks 21 are installed on the top of the box body, and the plurality of upper hooks 21 are evenly distributed on the top of the box body.

[0043] Specifically, the dimensions of the main cavity of the box are length: 720mm, width: 810mm, height: 750mm; the dimensions of the wiring cavity are length: 320mm, width: 810mm, height: 600mm; there are 39 JF8s, 2 JF16s, 2 JD9s, 3 JZ30s, and 2 JZ8-Ws; there are 10 A3s, 15 A1s, 8 A2s, 13 B2s, and 1 B4; the display screen is a PH12 mining intrinsically safe display screen, and the operation panel is a CXH-12 mining intrinsically safe operation keyboard, which controls the relays through internal program calculations and the output points of the PLC to achieve control of equipment such as pump inverters, travel inverters, pump motors, travel motors and solenoid valves. Of course, the PLC control logic is all prior art.

[0044] The basic parameters of the PLC are as follows: Rated voltage: 32 source digital inputs of DC24V; 16 outputs, output type: relay, voltage range 5~30V DC or 5~250V AC, rated current ≤2.0A; there are also two analog expansion modules with: input channels: 8 channels, current range: 0~20mA, output channels: 4 channels, current range: 0~20mA. Communication function: RS4851, transmission mode: full slave, half-duplex, communication rate: 19200bps transmission signal voltage: 0V~5V; maximum transmission distance: ≤10m. Number of Ethernet interfaces: 4, transmission mode: TCP / IP, communication rate: 10M / 100M, transmission signal voltage: 0V~5V, maximum transmission distance: ≤10m.

[0045] It has the following safe and reliable protection features:

[0046] (1) Overload protection

[0047] When the output load of the control box is greater than 1.2 times the rated load, the control box should be able to shut down within 1 minute for protection.

[0048] (2) Short circuit protection

[0049] The control box has a short-circuit protection function, which can protect and shut down when any two phases of the output are short-circuited.

[0050] (3) Overvoltage and undervoltage protection

[0051] When the input voltage of the control box is greater than or equal to 110% of the rated voltage or less than or equal to 70% of the rated voltage, the protection of the control box will be activated and a fault display will be displayed.

[0052] (4) Phase loss protection

[0053] The control box has a phase loss protection function. When any phase of the output is lost, it can protect the machine and shut down with a fault display.

[0054] (5) Pressure loss protection

[0055] After the control box is powered off and under voltage protection is implemented, it should not start automatically after power is restored.

[0056] (6) Leakage lock protection

[0057] The leakage interlock performance of the control box should meet the following requirements: the rated working voltage of the main circuit is 252V, the single-phase leakage interlock setting value is 7KΩ, and the allowable error of the action value is +20%.

[0058] It has been verified that the explosion-proof electric control box structure of the mining monorail crane of the utility model can arrange the IGBT module, filter capacitor, PLC component, relay, intrinsically safe power supply and switching power supply in the main cavity of the box, and provide heat dissipation for the equipment in the main cavity of the box by installing a radiator away from the wiring cavity side; the conventional mode of the upper and lower arrangement of the wiring cavity and the main cavity of the box is changed, and a left-right parallel mode is adopted to better achieve the balance of the box, and the inspection and maintenance are on a horizontal line. It is suitable for mines containing gas (methane) and coal dust explosions, and is suitable for battery monorail cranes, trackless rubber-wheeled vehicles and other occasions. It is not restricted and affected by the ground conditions of the tunnel, has a large climbing angle, and can travel in conditions with large undulating slopes and many bends, realizing continuous and rapid transportation of heavy loads, and realizing continuous transportation of equipment, personnel and materials from the wellhead to the working face without relocation, and has good application prospects.

[0059] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0060] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A mining monorail crane explosion-proof electric control box structure, Features: Including box; The box body is provided with a cavity, and the cavity includes a box body main cavity and a wiring cavity which are interconnected and located on the same horizontal plane; A cable entry device is provided on the wiring cavity away from the main cavity of the box body, a hole matching the cable entry device is provided on the box body and the cable entry device is installed on the hole; A radiator is provided on the side of the main cavity of the box away from the wiring cavity, and the radiator is installed on the side wall of the box; A front panel is arranged on the front side of the box body corresponding to the main cavity of the box body, and a display screen, an emergency stop button, an operation panel and a conversion switch are arranged on the front panel.

2. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that The main cavity and the wiring cavity of the box body are both cubic structures; The main cavity of the box body is flush with the bottom surface of the wiring cavity, and the top surface of the main cavity of the box body is higher than the top surface of the wiring cavity.

3. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that The front panel is also provided with a main cavity front handle and the front panel is fixed to the box body by a hinge.

4. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that A wiring cavity front panel is arranged on the front side of the box body corresponding to the wiring cavity, and a wiring cavity front handle is arranged on the wiring cavity front panel.

5. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that The cable introduction device includes a B2 interface, an A1 interface, an A3 interface, an A2 interface and a B4 interface.

6. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that The wiring cavity is provided with the following wiring terminals: JF8 interface, JF16 interface, JD9 interface, JZ8-W interface, and JZ30 interface.

7. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that A plurality of box upper hooks are arranged on the top of the box and the plurality of box upper hooks are evenly distributed on the top of the box.

8. The explosion-proof electric control box structure of a mining monorail crane according to claim 1, It is characterized in that The main cavity of the box is equipped with an IGBT module, a filter capacitor, a PLC component, a relay, an intrinsically safe power supply and a switching power supply; The display screen, emergency stop button, operation panel and conversion switch are electrically connected to the PLC components respectively.

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