Mine car running monitoring and control system

Abstract

The utility model discloses a mine car running monitoring and control system, and relates to the technical field of coal mine safety production. The system comprises a monitoring system and a control system, wherein the monitoring system comprises a tension sensor mounted at the joint of a mine car and a steel wire rope, and a speed sensor and an inclination sensor mounted at the bottom of the mine car; the control system comprises a processor installed at the bottom of the mine car, a PLC, a brake assembly, an auxiliary wheel assembly and a limiting stopper assembly. And the processor is connected with the sensors and the PLC, analyzes and processes the collected tension, speed and inclination angle information, sends a braking instruction to the PLC, and controls the brake assembly, the auxiliary wheel assembly and the limiter assembly to work through the PLC. The mine car running state monitoring device is high in monitoring precision, good in safety, convenient to implement and low in cost, can be applied to inclined roadway transportation of an underground coal mine, monitors the running state of a mine car in real time, prevents mine car running accidents, and greatly improves safety of mine car transportation.

Description

Technical Field

[0001] The utility model relates to the technical field of safe production in coal mines, in particular to a mine car running car monitoring and control system. Background Art

[0002] With the development of the coal mining industry, the safety issues of underground mine cars in the inclined lanes of coal mines have become increasingly prominent. During the underground inclined lane transportation process, due to factors such as rope breakage, insufficient winch tension, and improper operation by personnel, the mine car is prone to runaway, that is, the mine car loses control and slides at high speed, posing a serious threat to the life safety of miners and the normal operation of coal mine equipment. The underground environment is complex and changeable. If the operation status of the mine car can be accurately monitored and the runaway of the mine car can be prevented and controlled, the safety of coal mining and transportation will be greatly improved.

[0003] However, in the prior art, although the designs of anti-runaway devices are varied, they all have various problems. For example, the Chinese invention patent with publication number CN115743217A discloses an anti-runaway device for inclined tunnels. The patent judges the state of the mine car by the swing of the gravity pendulum, and then takes corresponding measures. Although the cost is low and the structure is simple, its monitoring accuracy needs to be improved. Another example is the anti-runaway device disclosed in the invention patent with publication number CN105539493A, which includes a speed acquisition component, a hydraulic drive system and a track capture component. The infrared reflective film installed on the mine car is easily blocked by underground coal dust, which affects the monitoring accuracy. In addition, the structure is complex and the device cost is high, and it is difficult to be widely used. Therefore, the development of a safe and reliable monitoring and anti-runaway system for coal mine underground inclined tunnel transportation mine cars has become a problem that needs to be solved urgently. Utility Model Content

[0004] In view of the above problems, the utility model proposes a mine car running monitoring and control system, which has high monitoring accuracy, reasonable design, good safety, and adopts multiple protections, which greatly improves the safety and stability of mine car operation.

[0005] A mine car running car monitoring and control system proposed according to the purpose of the utility model includes a monitoring system and a control system, wherein the monitoring system includes a tension sensor installed at the connection between the mine car and the wire rope, and a speed sensor and a tilt sensor installed at the bottom of the mine car;

[0006] The control system includes a processor, a PLC controller, a brake assembly, an auxiliary wheel assembly and a limiter assembly installed at the bottom of the mine car; the processor is connected to each sensor and the PLC controller, analyzes and processes the collected tension, speed, and tilt angle information, and sends a braking instruction to the PLC controller, and controls the brake assembly, the auxiliary wheel assembly and the limiter assembly to work through the PLC controller;

[0007] The auxiliary wheel assembly includes an auxiliary wheel and an auxiliary wheel adjuster, and the auxiliary wheel adjuster includes a first connecting rod, a first rack and a first gear. One end of the first connecting rod is connected to the auxiliary wheel, and the other end is connected to the first rack. The first gear is installed on the bucket and is two gears arranged on the side of the first rack, and meshes with the first rack for transmission.

[0008] The limiter assembly includes a limiter and a limiter adjuster, and the limiter adjuster includes a second gear, a second rack, a second connecting rod and a drive motor; the second gear is fixedly connected to one end of the second connecting rod, the second rack is two arranged on both sides of the second gear, meshing with the second gear for transmission, the limiter is two fixedly installed on each second rack away from one end of the second gear, and the output end of the drive motor is fixedly connected to the second connecting rod.

[0009] Preferably, the auxiliary wheel adjuster further comprises a buffer spring, which is installed in the first rack, has one end fixedly connected to the first connecting rod, and has the other end fixedly connected to the first rack.

[0010] Preferably, the limiter is a friction block, and the second connecting rod is an electric telescopic rod.

[0011] Preferably, a fixing frame is fixedly mounted on the underframe of the mining vehicle, and the processor, the PLC controller and the driving motor in the limiter assembly are all mounted on the fixing frame.

[0012] Preferably, the monitoring system further comprises a pressure sensor installed on the fixed pulley, and the control system further comprises a host and an alarm connected to the host.

[0013] Compared with the prior art, the advantages of a mine car running car monitoring and control system disclosed in the utility model are:

[0014] (1) The utility model has high monitoring accuracy, good safety, is easy to implement and has low cost. It can be applied in the inclined tunnel transportation in coal mines to monitor the running status of mine cars in real time, prevent runaway accidents, and greatly improve the safety of mine car transportation.

[0015] (2) The monitoring system of the utility model includes real-time monitoring of the mine car pulling force, fixed pulley pressure, mine car speed, tilt speed and angle, etc. The multiple monitoring has higher accuracy and is not affected by environmental factors such as poor visibility underground.

[0016] (3) The control system of the utility model first uses the auxiliary wheel assembly and the limiter assembly to ensure the smooth operation of the mine car and prevent rollover. Secondly, according to the pressure monitored by the pressure sensor in different ranges, the alarm controls the flashing of different color lights to alert the staff. When the monitored pressure exceeds the safety value, the host automatically controls the winch to stop running. Then, according to the monitored speed or tilt state, the processor controls the brake assembly and the limiter assembly to brake in time when the mine car runs away. Multiple protections greatly avoid the occurrence of runaway accidents, and safety is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is an overall schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the bottom structure of the mine car of the present utility model.

[0020] Figure 3 It is a side view of a mining car of the present utility model.

[0021] Figure 4 It is the front view of the mine car of the present utility model.

[0022] Figure 5 This is a structural diagram of the limiter assembly.

[0023] In the figure: 1-main engine; 2-warning device; 3-winch; 4-fixed pulley; 5-pressure sensor; 6-transmitter; 7-tension sensor; 8-auxiliary wheel assembly; 81-auxiliary wheel; 82-first gear; 83-first rack; 84-first connecting rod; 85-buffer spring; 9-mine car; 10-brake assembly; 11-car frame; 12-tilt sensor; 13-speed sensor; 14-PLC controller; 15-processor; 16-fixed frame; 17-wheel; 18-limiter assembly; 181-second gear; 182-second rack; 183-limiter; 184-second connecting rod; 19-track. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is briefly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Figure 1-Figure 5 The preferred embodiments of the utility model are shown and analyzed in detail.

[0026] like Figure 1-5 A mining car sports car monitoring and control system shown includes a monitoring system and a control system.

[0027] The monitoring system includes a tension sensor 7 installed at the connection between the mine car 9 and the wire rope, a speed sensor 13 and an inclination sensor 12 installed at the bottom of the mine car 9 , and a pressure sensor 5 installed on the fixed pulley 4 .

[0028] The control system includes a host 1 and an alarm 2 connected to the host 1, a processor 15 installed at the bottom of the mine car 9, a PLC controller 14, a brake assembly 10, an auxiliary wheel assembly 8 and a limiter assembly 18. The processor 15 is connected to each sensor and the PLC controller 14, analyzes and processes the collected tension, speed, and tilt angle information, and sends a braking command to the PLC controller 14, and controls the brake assembly 10, the auxiliary wheel assembly 8 and the limiter assembly 18 to work through the PLC controller 14.

[0029] The tension sensor 7 is a JHPY-1 customized tension sensor 7, which can monitor the wire rope tension data in real time and transmit the data to the processor 15 for processing.

[0030] The speed sensor 13 is a SC12-20K speed sensor 13, and the tilt sensor 12 is a SCMA-A800 tilt sensor 12. The speed sensor 13 and the tilt sensor 12 are connected to the processor 15 through wires. The speed sensor 13 monitors the real-time speed of the mine car 9 by monitoring the rotation speed of the wheel 17, and transmits the data to the processor 15. The tilt sensor 12 monitors the tilt speed and angle of the mine car 9 in real time, and transmits the data to the processor 15. When the monitoring values ​​of the speed sensor 13 and the tilt sensor 12 exceed the set safety values, the processor 15 sends a braking command to the PLC controller 14, and the PLC controller 14 controls the brake assembly 10 and the limiter assembly 18 to work and brake the mine car 9.

[0031] The pressure sensor 5 is a ZN5H type pressure sensor 5, which is connected to the transmitter 6 and is used to monitor the pressure on the fixed pulley 4 and transmit real-time data to the host 1 through the transmitter 6. The host 1 analyzes the received information.

[0032] The host 1 is a computer with machine autonomous learning capabilities and complex data fusion processing capabilities. It will learn the collected data such as wire rope tension, mine car 9 running speed, tilt speed, inclination angle, etc. during each operation of the mine car 9, as well as the corresponding treatment measures and treatment effects. On the one hand, it calculates the dangerous sections where accidents occur in the mine car 9 running route based on the data, so as to take certain measures to prevent the mine car 9 from running away. On the other hand, it analyzes, optimizes and improves the treatment measures and control effects of each mine car 9 running away control system, so that the treatment measures are continuously optimized and more reasonable. The host 1 is connected to the alarm 2 and the processor 15, and can receive the pressure information emitted by the transmitter 6 connected to the pressure sensor 5. The host 1 analyzes the received information.

[0033] The processor 15 is of STM32F407 model, which can analyze and process the collected tension, speed, tilt speed and angle information, send a braking command to the PLC controller 14, and feed back the information to the host 1.

[0034] After receiving the braking command, the PLC controller 14 can brake by controlling the brake assembly 10 and the limiter assembly 18. When the mine car 9 tilts, the PLC controller 14 can also control the auxiliary wheel assembly 8 on the tilting side to increase its height, thereby applying a force in the opposite direction to the mine car 9 to prevent it from tipping over.

[0035] The brake assembly 10 adopts a common structure in the prior art, and its structure and principle are not described in detail here.

[0036] The auxiliary wheel assembly 8 includes an auxiliary wheel 81 and an auxiliary wheel regulator. The auxiliary wheels 81 are two arranged on both sides of the truck bucket, and the auxiliary wheel regulators are two arranged corresponding to the auxiliary wheels 81. Each auxiliary wheel regulator includes a first connecting rod 84, a first rack 83, a first gear 82 and a buffer spring 85. One end of the first connecting rod 84 is rotatably connected to the auxiliary wheel 81, and the other end is connected to the first rack 83. The first rack 83 is slidably arranged on the truck bucket up and down, and the first gear 82 is rotatably installed on the truck bucket. There are two arranged on the side of the first rack 83. The first gear 82 rotates under the drive of the motor and meshes with the first rack 83 for transmission. The buffer spring 85 is installed in the first rack 83, one end of which is fixedly connected to the inner wall of the first rack 83, and the other end is fixedly connected to the first connecting rod 84. The auxiliary wheel (81) can be adjusted in height by the auxiliary wheel adjuster to assist the mine car 9 in balancing. When the mine car 9 tilts to the left, the auxiliary wheel 81 on the left side of the mine car 9 is controlled to rise, giving the mine car 9 a force in the opposite direction to quickly stabilize the mine car 9. The same applies to tilting to the right. The buffer spring 85 can ensure a smooth process and protect the auxiliary wheel adjuster to reduce damage.

[0037] The limiter assembly 18 is fixed on the fixed frame 16, and can be extended and retracted left and right through the action of gears, and can be moved up and down through the limiter adjuster; during the operation of the mine car 9, the limiter 183 is at a small distance from the rail 19 both horizontally and vertically. When the mine car 9 needs to be braked, the limiter 183 moves outward horizontally and upward vertically, and quickly contacts the rail 19, increasing friction to achieve a deceleration braking effect.

[0038] The stopper assembly 18 includes a stopper 183 and a stopper adjuster. The stopper 183 is a friction block, and the stopper adjuster includes a second gear 181, a second rack 182, a second connecting rod 184, and a driving motor. The second gear 181 is fixedly connected to one end of the second connecting rod 184, and the second rack 182 is two arranged on both sides of the second gear 181, meshing with the second gear 181 for transmission. The stopper 183 is two fixedly installed on each second rack 182 away from one end of the second gear 181, and the output end of the driving motor is fixedly connected to the second connecting rod 184. The driving motor drives the second connecting rod 184 to rotate, thereby driving the second gear 181 to transmit, and the second gear 181 meshes with the second rack 182, driving the extension and retraction of the friction block, and limiting the mine car 9 when necessary. The second connecting rod 184 is an electric telescopic rod, which can realize the up and down movement of the friction block by driving the up and down movement of the gear, further improving the contact between the friction block and the rail 19, and friction braking. The driving motor is fixed on the fixing frame 16 , and the entire limiter assembly 18 is fixed on the fixing frame 16 through the driving motor.

[0039] A fixing frame 16 is welded on the vehicle chassis 11 , and the processor 15 , the PLC controller 14 , the drive motor in the limiter assembly 18 , and the brake assembly 10 are all mounted on the fixing frame 16 , so as to facilitate the integration and installation of various monitoring devices and control devices.

[0040] Working principle: The pressure sensor 5 monitors the pressure on the fixed pulley 4, and transmits the monitoring data to the host 1 through the transmitter 6. The host 1 analyzes the monitoring data. When the monitored pressure is less than the safety value, the host 1 controls the alarm 2 to light up the green light; when the pressure is between the safety value and the warning value, the host 1 controls the alarm 2 to light up the yellow light; when the pressure is greater than the warning value, the host 1 controls the alarm 2 to light up the red light and sound an alarm, and the host 1 automatically controls the winch 3 to stop running through the processor 15 and the PLC controller 14. The safety value and the warning value are reasonably determined according to the actual situation on site.

[0041] The tension sensor 7 monitors the tension at the connection between the mining car 9 and the wire rope, and transmits the data to the processor 15. The processor 15 analyzes the tension data and sends a braking command to the PLC controller 14 when the tension exceeds the safety value. The speed sensor 13 and the tilt sensor 12 monitor the real-time speed, tilt speed and angle of the mine car 9, and transmit the data to the processor 15. When the monitored speed or tilt speed and angle exceed the set safety value, the processor 15 sends a braking command to the PLC controller 14. After the PLC controller 14 receives the braking command, it controls the limiter regulator to rise so that it clamps with the rail 19 to increase friction, and controls the gear to make the limiter 183 extend horizontally and clamp with the rail 19 to increase friction. At the same time, the PLC controller 14 controls the brake to brake the mine car 9. During the operation of the mine car 9, the auxiliary wheel 81 can assist the mine car 9 to run smoothly. When the tilt sensor 12 detects that the mine car 9 is tilted, the processor 15 processes the data and sends it to the PLC controller 14. The PLC controller 14 adjusts the height of the auxiliary wheels 81 on both sides of the mine car 9 by controlling the auxiliary wheel regulator according to the tilt situation to stabilize the mine car 9.

[0042] The above description of the disclosed embodiments enables professionals in the field to implement and use the utility model. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit and scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A mine car monitoring and control system, including a monitoring system and a control system, characterized in that: The monitoring system comprises a tension sensor (7) installed at the connection between the mine car (9) and the wire rope, and a speed sensor (13) and a tilt sensor (12) installed at the bottom of the mine car (9); The control system comprises a processor (15) installed at the bottom of the mining car (9), a PLC controller (14), a brake assembly (10), an auxiliary wheel assembly (8) and a stopper assembly (18); the processor (15) is connected to each sensor and the PLC controller (14), analyzes and processes the collected information of tension, speed and tilt angle, and sends a braking instruction to the PLC controller (14), and controls the operation of the brake assembly (10), the auxiliary wheel assembly (8) and the stopper assembly (18) through the PLC controller (14); The auxiliary wheel assembly (8) comprises an auxiliary wheel (81) and an auxiliary wheel adjuster, wherein the auxiliary wheel adjuster comprises a first connecting rod (84), a first rack (83) and a first gear (82), wherein one end of the first connecting rod (84) is connected to the auxiliary wheel (81), and the other end is connected to the first rack (83), and the first gear (82) is installed on the bucket and is two gears arranged on the side of the first rack (83) and meshing with the first rack (83) for transmission; The limiter assembly (18) includes a limiter (183) and a limiter adjuster, and the limiter adjuster includes a second gear (181), a second rack (182), a second connecting rod (184) and a driving motor; the second gear (181) is fixedly connected to one end of the second connecting rod (184), the second rack (182) is two arranged on both sides of the second gear (181), meshing with the second gear (181) for transmission, the limiter (183) is two fixedly installed on one end of each second rack (182) away from the second gear (181), and the output end of the driving motor is fixedly connected to the second connecting rod (184).

2. A mine car running car monitoring and control system according to claim 1, characterized in that: The auxiliary wheel adjuster also includes a buffer spring (85), which is installed in the first rack (83), one end of which is fixedly connected to the first connecting rod (84) and the other end of which is fixedly connected to the first rack (83).

3. A mine car running car monitoring and control system according to claim 1, characterized in that: The stopper (183) is a friction block, and the second connecting rod (184) is an electric telescopic rod.

4. A mine car running car monitoring and control system according to claim 1, characterized in that: A fixing frame (16) is fixedly mounted on the underframe (11) of the mining car (9), and the processor (15), the PLC controller (14) and the driving motor in the limiter assembly (18) are all mounted on the fixing frame (16).

5. A mine car running car monitoring and control system according to claim 1, characterized in that: The monitoring system further comprises a pressure sensor (5) mounted on the fixed pulley (4), and the control system further comprises a host (1) and an alarm (2) connected to the host (1).

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