Safety interlocking system for underground coal mine aerial passenger device and monorail crane

Abstract

The utility model relates to a safety interlocking system for an underground coal mine aerial passenger device and a monorail crane, and belongs to coal mine safety operation control equipment. The technical scheme includes that the device comprises a PLC (programmable logic controller) control box, a pneumatic control box, a control wire, an overhead man-riding device, a monorail crane and a sensor, touch cylinders are mounted at the head and the tail of the overhead man-riding device in a narrow roadway respectively, the sensor is arranged on the monorail crane, a deflector rod is arranged on one side of the sensor and connected with the sensor, and the sensor is connected with the pneumatic control box. The trigger side of the deflector rod coincides with the farthest end position of an extension rod of a machine head and machine tail position trigger air cylinder of the aerial passenger device; a control air pressure pipe of the touch air cylinder is connected to the pneumatic control box, the pneumatic control box is connected with the high-pressure air source, the direct-current power source and the PLC control box, and the sensor is connected with an emergency stop control system of the monorail crane. According to the design system, mature electrical components are adopted and installed on an existing aerial passenger device and an existing monorail crane, and the operation safety of the monorail crane and the aerial passenger device is improved.

Description

Technical Field

[0001] This utility model patent relates to a safety interlocking system between an overhead passenger device and a monorail crane in an underground coal mine, and belongs to a coal mine safety operation control device. Background Art

[0002] With the continuous improvement of the mechanization and automation of mining equipment, the technical level of the auxiliary transportation equipment required to match it is constantly improving. At present, the types of auxiliary transportation equipment in coal mines are constantly increasing, and the transportation efficiency and quality have been greatly improved. Overhead passenger devices are currently important equipment for achieving efficient transportation of people in coal mines. They are divided into various types such as one-way, two-way, floor-standing, and overhead, which better meet the transportation requirements of people in different operating conditions in coal mine tunnels. Monorail cranes are a new type of auxiliary transportation equipment developed in recent years. Especially with the application of lithium battery monorail cranes, they have become the preferred equipment for auxiliary transportation in coal mines. Monorail cranes have the functions of transporting both people and goods. At the same time, they have the advantages of large carrying capacity, high adaptability, and small space occupied in the tunnel. They have been widely promoted and applied.

[0003] Both overhead passenger vehicles and monorail cranes operate in underground coal mine tunnels. Some tunnels are so confined that only one type of equipment can pass through at a time. Accurate control is crucial to improving auxiliary transportation safety.

[0004] Existing Problem: Monorail cranes are a type of auxiliary transport equipment in coal mines that has seen rapid adoption in recent years. They operate in the same tunnels as traditional auxiliary transport equipment, such as overhead passenger vehicles. Consequently, multiple types of equipment may need to pass through the same tunnel at the same time. Existing equipment often relies on manual control or communication equipment, which inevitably presents safety risks due to human error. Utility Model Content

[0005] In response to the above problems, the utility model designs a safety interlocking system for an overhead passenger device and a monorail crane locomotive in an underground coal mine to achieve accurate interlocking between the two, avoid two types of equipment passing through the same narrow tunnel at the same time, and eliminate safety hazards.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A safety interlocking system for an overhead passenger device and a monorail crane in an underground coal mine, characterized in that it includes a PLC control box, a pneumatic control box, control wires, an overhead passenger device, a monorail crane, and sensors. A trigger cylinder is installed at the nose and tail of the overhead passenger device in a narrow lane. The monorail crane is provided with a sensor, and a lever is provided on one side of the sensor. The lever is interconnected with the sensor, and the trigger side of the lever coincides with the farthest end of the extended rod of the trigger cylinder at the nose and tail of the overhead passenger device.

[0008] The control air pressure pipe of the trigger cylinder is connected to the pneumatic control box, which is connected to the high-pressure air source, DC power supply and PLC control box.

[0009] The sensor is connected to the emergency stop control system of the monorail crane locomotive.

[0010] According to the safety interlocking system between the coal mine underground overhead passenger device and the monorail crane, fixed frames are provided at the tail and the nose of the overhead passenger device, and the trigger cylinder is installed on the fixed frames.

[0011] According to the safety interlocking system of the overhead passenger device and monorail crane in underground coal mines, the DC power supply has a built-in transformer and a KDW127 / 24K mining flameproof intrinsically safe DC voltage stabilizer to convert AC127V into DC24V.

[0012] According to the safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines, the PLC control box has a built-in Siemens SR20 model PLC and a sensor model of GEJ30.

[0013] According to the safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines, the trigger cylinder is a single-acting cylinder, and the cylinder model is QG63-40MP4-S.

[0014] According to the safety interlocking system between the coal mine underground overhead passenger device and the monorail crane, two trigger cylinders at the head and tail positions of the overhead passenger device are respectively provided with corresponding pneumatic control boxes and DC power supplies.

[0015] According to the safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines, the high-pressure gas source is high-pressure gas in underground coal mines.

[0016] According to the safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines, when the overhead passenger device is in operation, the extension rod of the trigger cylinder is extended, and when the monorail crane is in operation, the shifting rod touches the end of the extension rod of the trigger cylinder, and the sensor is triggered after being touched by the shifting rod.

[0017] This patented design system uses mature electrical components and is installed on existing overhead adult devices and monorail crane locomotives. It has stable and reliable performance, low cost and low maintenance, laying a good foundation for improving the operational safety of auxiliary transportation equipment in underground coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a connection diagram of the present invention,

[0019] Figure 2 This is a top view of the lever of the present invention.

[0020] Reference numerals:

[0021] PLC control box; 2-mining power supply; 3-high-voltage gas source; 4-DC power supply; 5-pneumatic control box; 6-fixed frame; 7-cylinder; 8-control wire; 9-power cord; 10-inlet and outlet air pipes; 11-overhead passenger device; 12-monorail crane; 13-sensor; 14-shift lever. DETAILED DESCRIPTION

[0022] The specific content of the present invention will be further described below:

[0023] The utility model relates to a safety interlocking system for an overhead passenger device and a monorail crane in an underground coal mine. The system is installed on the overhead passenger device and the monorail crane which are operated in a narrow lane.

[0024] Specific as Figure 1 As shown, it includes a PLC control box 1, a pneumatic control box 5, control wires, an overhead passenger device 11, a monorail crane 12 and a sensor 13.

[0025] The PLC control box 1 controls the entire system and is equipped with a Siemens SR20 PLC. The pneumatic control box 5 is an explosion-proof solenoid valve housing that receives control information from the PLC to control the on / off of high-pressure gas.

[0026] This device installs a trigger cylinder 7 at the head and tail positions of the overhead passenger device 11 in the narrow lane, and a sensor 13 is provided on the monorail crane 12. The sensor 13 is connected to the emergency stop control system of the monorail crane 12, and the sensor 13 model is GEJ30.

[0027] A lever 14 is installed on one side of the sensor 13 on the monorail crane 12. This lever is interconnected with the sensor 13, and when it is activated, the sensor 13 senses its motion. The triggering side of the lever 14 coincides with the distal end of the extended rod of the trigger cylinder 7 at the nose and tail of the overhead passenger device 11. The control air pressure pipes for the trigger cylinder 7 are connected to a pneumatic control box 5, which is connected to a high-pressure air source 3, a DC power supply 4, and a PLC control box 1. Mounting brackets 6 are located at the nose and tail of the overhead passenger device 11, and the trigger cylinder 7 is mounted on these brackets. The trigger cylinder 7 is a single-acting cylinder, model QG63-40MP4-S.

[0028] The DC power supply 4 incorporates a built-in transformer and a KDW127 / 24K mining-grade flameproof intrinsically safe DC voltage regulator to convert 127V AC to 24V DC. The two trigger cylinders 7 at the front and rear of the overhead passenger device 11 are each equipped with a corresponding pneumatic control box 5 and DC power supply 4. The DC power supply 4 is powered by an underground power source, specifically a 127V AC power source within the mine tunnel. The high-pressure gas source 3 is derived from underground coal mine high-pressure gas.

[0029] When the overhead passenger device 11 is in operation, the extension rod of the trigger cylinder 7 is extended, and when the monorail crane 12 is in operation, the shifting rod 14 touches the end of the extension rod of the trigger cylinder 7, and the sensor 13 is triggered after being touched by the shifting rod 14.

[0030] The PLC control box 1 and the pneumatic control box 5 are connected via a control guide for transmitting control signals. Explosion-proof power cables are used to connect the DC power supply to the pneumatic control box 5 and to the mining power supply. 10mm diameter air pipes are used for the inlet and outlet air pipes.

[0031] Working process of this device:

[0032] (1) Install one set of trigger cylinders at the head and tail of the overhead passenger device to trigger the control when a single-track locomotive passes by;

[0033] (2) When the overhead passenger device is in operation, the extension rod of the trigger cylinder extends, and when the monorail crane passes by, the sensor on the monorail crane is triggered by the lever, and the monorail crane stops;

[0034] (3) When the overhead passenger device stops, the air in the cylinder is cut off and the cylinder rod retracts, allowing the monorail crane to pass normally.

Claims

1. A safety interlocking system between an overhead passenger device and a monorail crane in a coal mine, characterized in that: The invention comprises a PLC control box (1), a pneumatic control box (5), control wires, an overhead passenger device (11), a monorail crane (12) and a sensor (13), wherein a trigger cylinder (7) is installed at the head and tail positions of the overhead passenger device (11) in a narrow lane, the monorail crane (12) is provided with a sensor (13), a shift lever (14) is provided on one side of the sensor (13), the shift lever (14) is interconnected with the sensor (13), and the trigger side of the shift lever (14) coincides with the farthest end position of the extended rod of the trigger cylinder (7) at the head and tail positions of the overhead passenger device (11); The control air pressure pipe of the trigger cylinder (7) is connected to the pneumatic control box (5), and the pneumatic control box (5) is connected to the high-pressure air source (3), the DC power supply (4) and the PLC control box (1). The sensor (13) is connected to the emergency stop control system of the monorail crane (12).

2. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: The tail and the nose of the overhead passenger device (11) are provided with fixing frames (6), and the trigger cylinder (7) is installed on the fixing frames (6).

3. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: The DC power supply (4) has a built-in transformer and a KDW127 / 24K mining flameproof intrinsically safe DC voltage regulator to convert AC127V to DC24V.

4. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: The PLC control box (1) has a built-in Siemens SR20 model PLC, and the sensor (13) is a GEJ30 model.

5. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: The trigger cylinder (7) is a single-acting cylinder, and the cylinder model is QG63-40MP4-S.

6. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: The two actuating cylinders (7) at the nose and tail of the overhead passenger device (11) are respectively provided with corresponding pneumatic control boxes (5) and DC power supplies (4).

7. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: The high-pressure gas source (3) is high-pressure gas in a coal mine.

8. The safety interlocking system between the overhead passenger device and the monorail crane in underground coal mines according to claim 1 is characterized in that: When the overhead passenger device (11) is in operation, the extension rod of the trigger cylinder (7) is extended, and when the monorail crane (12) is in operation, the shifting rod (14) touches the end of the extension rod of the trigger cylinder (7), and the sensor (13) is triggered after being touched by the shifting rod (14).

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