Driverless mine car automatic fire extinguishing system drive-by-wire trigger device and fire extinguishing method

Abstract

The invention discloses a drive-by-wire trigger device for an automatic fire extinguishing system of an unmanned mine car. The drive-by-wire trigger device comprises an automatic fire extinguishing system controller, a manual trigger switch, a fire extinguishing agent tank, a temperature sensing wire, a spray head, a drive-by-wire chassis controller, a temperature sensor, a smoke sensor and a thermal camera. The invention further discloses a fire extinguishing method of the drive-by-wire triggering device of the automatic fire extinguishing system of the unmanned mine car. According to the invention, monitoring of fire hazard signals of all subsystems of the unmanned mine car except the engine is realized, and the system has the characteristics of wide coverage and strong systematicness.

Description

Technical Field

[0001] The invention belongs to the field of mining dump trucks, and in particular relates to a wire-controlled trigger device for an automatic fire extinguishing system of an unmanned mining truck and a fire extinguishing method. Background Art

[0002] Off-road mining dump trucks (referred to as mining trucks) are one of the mining equipment used to transport ores and mineral materials in large open-pit mines. Mining trucks are mainly composed of a frame, a power system, a transmission system, a control system, a cab assembly, a braking device, etc. Off-road mining dump trucks have become the main means of transportation in open-pit mines due to their good maneuverability, high speed, and strong climbing ability. Unmanned mining trucks are a new product of off-road mining dump trucks, which can achieve completely unmanned continuous operation to improve mine production safety and production efficiency, and can reduce operating costs, and have broad application prospects.

[0003] At present, there are two triggering devices for the automatic fire extinguishing system of mining vehicles. One is triggered by the temperature sensing line near the engine, that is, when the temperature of the high-temperature area near the engine exceeds the set value of the temperature sensing line, the temperature sensing line automatically triggers the automatic fire extinguishing system through the automatic fire extinguishing system controller to extinguish the fire; the other is to use a manual fire extinguishing switch or a manual fire extinguishing button to trigger manually, that is, when the driver observes and finds that the vehicle drive system, engine, hydraulic system and other subsystems have fire hazards, the automatic fire extinguishing system is manually triggered by manually operating the manual fire extinguishing switch near the ladder at the bottom of the vehicle or the manual fire extinguishing button integrated in the automatic fire extinguishing controller in the cab to extinguish the fire. However, for unmanned mining vehicles, the driver is not in the cab during the operation of the vehicle. If there is a fire hazard in the vehicle drive system, transmission system, hydraulic system and other subsystems outside the engine, the automatic fire extinguishing system cannot be automatically triggered to extinguish the fire, which poses certain safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a wire-controlled trigger device and a fire extinguishing method for an automatic fire extinguishing system of an unmanned mine car, which realizes the monitoring of fire hazard signals of various subsystems of the unmanned mine car except the engine, and has the characteristics of wide coverage and strong systematization.

[0005] To achieve the above purpose, the technical solution used in the present invention is:

[0006] The wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle includes:

[0007] The automatic fire extinguishing system controller is used to receive the engine temperature value and the fire hazard electrical signal. The signal input interface is connected to the temperature sensing line and the signal output interface of the wire-controlled chassis controller through cables, and the signal output interface is connected to the control end of the solenoid valve through cables; when the engine temperature value exceeds the engine temperature setting value, or when the fire hazard electrical signal is received, a fire extinguishing signal is sent to the control end of the solenoid valve;

[0008] A manual trigger switch is used to turn on or off the solenoid valve, and the signal output end is connected to the control end of the solenoid valve through a cable;

[0009] The fire extinguishing agent tank is used to store the fire extinguishing agent and is provided with a fire extinguishing agent outlet. The fire extinguishing agent outlet is provided with a solenoid valve, and the solenoid valve is connected to the nozzle through a pipeline;

[0010] A sprinkler head for spraying fire extinguishing agent;

[0011] The temperature sensing line is used to measure the engine temperature and upload the measured engine temperature value to the automatic fire extinguishing system controller;

[0012] A wire-controlled chassis controller is used to receive the ambient temperature value, the smoke concentration value, and the thermal infrared value, and when the ambient temperature value exceeds the ambient temperature setting value, the smoke concentration value exceeds the smoke concentration setting value, or the thermal infrared value exceeds the thermal infrared setting value, a fire hazard electrical signal is sent to the automatic fire extinguishing system controller;

[0013] The temperature sensor is used to measure the ambient temperature and upload the measured ambient temperature value to the wire-controlled chassis controller, and its signal output port is connected to the signal input interface of the wire-controlled chassis controller through a cable;

[0014] The smoke sensor is used to measure the smoke concentration and upload the measured smoke concentration value to the wire-controlled chassis controller, and its signal output port is connected to the signal input interface of the wire-controlled chassis controller through a cable;

[0015] The thermal camera is used to measure thermal infrared signals and upload the measured thermal infrared values ​​to the wire-controlled chassis controller. The signal output port of the thermal camera is connected to the signal input port of the wire-controlled chassis controller through a cable.

[0016] Furthermore, the temperature sensing line is arranged above the engine, the wire-controlled chassis controller is installed in the low-voltage electrical cabinet, the temperature sensor, smoke sensor, and thermal camera are installed near the subsystems, which include: mine car drive system, transmission system, hydraulic system, fuel system, and electronic control system; the nozzle is installed near the engine and subsystems, and the manual trigger switch is arranged at the escalator of the mine car close to the ground.

[0017] The fire extinguishing method of the wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle includes:

[0018] When the engine temperature value near the engine exceeds the engine temperature setting value, the temperature sensing line sends a fire hazard signal to the automatic fire extinguishing system controller, and the automatic fire extinguishing system controller sends a fire extinguishing signal to the control end of the solenoid valve;

[0019] When a fire hazard occurs in a subsystem, the temperature sensor, smoke sensor, and thermal camera respectively send an ambient temperature value, a smoke density value, and a thermal infrared value to the wire-controlled chassis controller; the wire-controlled chassis controller receives the ambient temperature value, the smoke density value, and the thermal infrared value. When the ambient temperature value exceeds the ambient temperature setting value, the smoke density value exceeds the smoke density setting value, or the thermal infrared value exceeds the thermal infrared setting value, it is determined that a fire hazard exists in the subsystem, and the wire-controlled chassis controller sends a fire hazard electrical signal to the automatic fire extinguishing system controller, and the automatic fire extinguishing system controller sends a fire extinguishing signal to the control end of the solenoid valve;

[0020] The control end of the solenoid valve is connected to the pipeline after receiving the fire extinguishing signal, the solenoid valve is connected to the pipeline, the nozzle sprays the fire extinguishing agent, and the engine fire extinguishing operation is implemented.

[0021] Preferably, when a fire hazard is found in the vehicle, a manual trigger switch is operated, and the control end of the solenoid valve receives a fire extinguishing signal and connects the pipeline, and the nozzle sprays the fire extinguishing agent, and the nozzle implements a manual fire extinguishing operation.

[0022] The technical effects of the present invention include:

[0023] 1. The present invention realizes the monitoring of fire hazard signals of each subsystem of the unmanned mining vehicle except the engine, and has the characteristics of wide coverage and strong systematicity.

[0024] 2. The present invention collects fire warning information through a wire-controlled chassis controller, and outputs electrical signals to the automatic fire extinguishing system controller, fire extinguishing agent tank, nozzle and other components to implement wire-controlled fire extinguishing operations, further improving the driving safety of unmanned mining vehicles.

[0025] The wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mine car of the present invention collects fire warning information such as temperature, smoke density, thermal imaging signals, etc. of the main systems of the unmanned mine car through the wire-controlled chassis controller. When a fire hazard occurs in the mine car, the wire-controlled chassis controller outputs an electrical signal to the automatic fire extinguishing system controller, and triggers the automatic fire extinguishing system through the automatic fire extinguishing system controller to extinguish the fire.

[0026] 3. The present invention is applicable to different types of unmanned mine vehicles. By utilizing the present invention, the unmanned mine vehicle can realize the wire-controlled triggering of the automatic fire extinguishing system, has the characteristics of multi-sensor type signal triggering and a safe and reliable system, and can meet the requirements of the unmanned mine vehicle for the automatic fire extinguishing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a structural principle diagram of the wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle in the present invention.

[0028] Among them: 1. Automatic fire extinguishing system controller; 2. Manual trigger switch; 3. Fire extinguishing agent tank; 4. Temperature sensing line; 5. Sprinkler; 6. Wire-controlled chassis controller; 7. Temperature sensor; 8. Smoke sensor; 9. Thermal camera. DETAILED DESCRIPTION

[0029] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0030] like Figure 1 The figure shows the structural principle diagram of the wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle in the present invention.

[0031] The wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle includes: an automatic fire extinguishing system controller 1, a manual trigger switch 2, a fire extinguishing agent tank 3, a temperature sensing line 4, a nozzle 5, a wire-controlled chassis controller 6, a temperature sensor 7, a smoke sensor 8, and a thermal camera 9.

[0032] The automatic fire extinguishing system controller 1 is used to receive the engine temperature value and the fire hazard electrical signal. The signal input interface is connected to the temperature sensing line 4 and the signal output interface of the wire-controlled chassis controller 6 through cables, and the signal output interface is connected to the control end of the solenoid valve through cables; when the engine temperature value exceeds the engine temperature setting value, or when the fire hazard electrical signal is received, a fire extinguishing signal is sent to the control end of the solenoid valve;

[0033] A manual trigger switch 2 is used to turn on or off the solenoid valve. The signal output end is connected to the control end of the solenoid valve through a cable. The manual trigger switch 2 is arranged at the escalator of the mine car close to the ground;

[0034] The fire extinguishing agent tank 3 is used to store the fire extinguishing agent and is provided with a fire extinguishing agent outlet. The fire extinguishing agent outlet is provided with a solenoid valve, and the solenoid valve is connected to the nozzle 5 through a pipeline;

[0035] A nozzle 5, for spraying a fire extinguishing agent;

[0036] The temperature sensing line 4 is used to measure the engine temperature and upload the measured engine temperature value to the automatic fire extinguishing system controller 1;

[0037] The wire-controlled chassis controller 6 is used to receive the ambient temperature value, the smoke concentration value, and the thermal infrared value, and when the ambient temperature value exceeds the ambient temperature setting value, the smoke concentration value exceeds the smoke concentration setting value, or the thermal infrared value exceeds the thermal infrared setting value, it sends a fire hazard electrical signal to the automatic fire extinguishing system controller 1;

[0038] The temperature sensor 7 is used to measure the ambient temperature and upload the measured ambient temperature value to the wire-controlled chassis controller 6, and its signal output port is connected to the signal input interface of the wire-controlled chassis controller 6 through a cable;

[0039] The smoke sensor 8 is used to measure the smoke concentration and upload the measured smoke concentration value to the wire-controlled chassis controller 6, and its signal output port is connected to the signal input interface of the wire-controlled chassis controller 6 through a cable;

[0040] The thermal camera 9 is used to measure thermal infrared signals and upload the measured thermal infrared values ​​to the wire-controlled chassis controller 6 , and its signal output port is connected to the signal input interface of the wire-controlled chassis controller 6 through a cable.

[0041] The temperature sensing line 4 is arranged above the engine to monitor the temperature near the engine. The wire-controlled chassis controller 6 is installed in the low-voltage electrical cabinet. The temperature sensor 7, smoke sensor 8, and thermal camera 9 are installed near the subsystems with high temperature or fire hazards such as the mine car drive system, transmission system, hydraulic system, fuel system, and electronic control system to monitor the fire hazards of each subsystem; the nozzle 5 is installed near the engine and subsystems.

[0042] The fire extinguishing method of the wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle, the specific steps are as follows:

[0043] (1) When the driver or maintenance personnel finds that there is a fire hazard in the vehicle, they operate the manual trigger switch 2, and the control end of the solenoid valve receives the fire extinguishing signal and connects the pipeline, and the nozzle 5 sprays the fire extinguishing agent, and directly controls the nozzle 5 to implement the manual fire extinguishing operation.

[0044] (2) When the engine temperature value near the engine exceeds the engine temperature setting value, the temperature sensing line 4 sends a fire hazard signal to the automatic fire extinguishing system controller 1, and the automatic fire extinguishing system controller 1 sends a fire extinguishing signal to the control end of the solenoid valve. After receiving the fire extinguishing signal, the control end of the solenoid valve connects the pipeline, and the nozzle sprays the fire extinguishing agent to implement the engine fire extinguishing operation.

[0045] (3) When a fire hazard occurs in the subsystem, the temperature sensor 7, the smoke sensor 8, and the thermal camera 9 send electrical signals (ambient temperature value, smoke concentration value, thermal infrared value) to the wire-controlled chassis controller 6; the wire-controlled chassis controller 6 receives the electrical signals, and when the ambient temperature value exceeds the ambient temperature setting value, the smoke concentration value exceeds the smoke concentration setting value, or the thermal infrared value exceeds the thermal infrared setting value, it is determined that there is a fire hazard in the subsystem, and the wire-controlled chassis controller 6 sends a fire hazard electrical signal to the automatic fire extinguishing system controller 1, and the automatic fire extinguishing system controller 1 sends a fire extinguishing signal to the control end of the solenoid valve. After receiving the fire extinguishing signal, the control end of the solenoid valve connects the pipeline, and the nozzle sprays the fire extinguishing agent to implement the automatic fire extinguishing operation, thereby realizing the wire-controlled fire extinguishing operation.

[0046] The terms used in the present invention are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A wire-controlled trigger device for an automatic fire extinguishing system of an unmanned mining vehicle, characterized in that: include: The automatic fire extinguishing system controller is used to receive the engine temperature value and the fire hazard electrical signal. The signal input interface is connected to the temperature sensing line and the signal output interface of the wire-controlled chassis controller through cables, and the signal output interface is connected to the control end of the solenoid valve through cables; when the engine temperature value exceeds the engine temperature setting value, or when the fire hazard electrical signal is received, a fire extinguishing signal is sent to the control end of the solenoid valve; A manual trigger switch is used to turn on or off the solenoid valve, and the signal output end is connected to the control end of the solenoid valve through a cable; The fire extinguishing agent tank is used to store the fire extinguishing agent and is provided with a fire extinguishing agent outlet. The fire extinguishing agent outlet is provided with a solenoid valve, and the solenoid valve is connected to the nozzle through a pipeline; A sprinkler head for spraying fire extinguishing agent; The temperature sensing line is used to measure the engine temperature and upload the measured engine temperature value to the automatic fire extinguishing system controller; A wire-controlled chassis controller is used to receive the ambient temperature value, the smoke concentration value, and the thermal infrared value, and when the ambient temperature value exceeds the ambient temperature setting value, the smoke concentration value exceeds the smoke concentration setting value, or the thermal infrared value exceeds the thermal infrared setting value, a fire hazard electrical signal is sent to the automatic fire extinguishing system controller; The temperature sensor is used to measure the ambient temperature and upload the measured ambient temperature value to the wire-controlled chassis controller, and its signal output port is connected to the signal input interface of the wire-controlled chassis controller through a cable; The smoke sensor is used to measure the smoke concentration and upload the measured smoke concentration value to the wire-controlled chassis controller, and its signal output port is connected to the signal input interface of the wire-controlled chassis controller through a cable; The thermal camera is used to measure thermal infrared signals and upload the measured thermal infrared values ​​to the wire-controlled chassis controller. Its signal output port is connected to the signal input interface of the wire-controlled chassis controller through a cable.

2. The wire-controlled trigger device for the automatic fire extinguishing system of an unmanned mining vehicle according to claim 1, characterized in that: The temperature sensing line is arranged above the engine, the wire-controlled chassis controller is installed in the low-voltage electrical cabinet, and the temperature sensor, smoke sensor, and thermal camera are installed near the subsystems. The subsystems include: mine car drive system, transmission system, hydraulic system, fuel system, and electronic control system; the nozzle is installed near the engine and subsystems, and the manual trigger switch is arranged at the escalator of the mine car close to the ground.

3. The fire extinguishing method of the wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle according to claim 1, characterized in that: include: When the engine temperature value near the engine exceeds the engine temperature setting value, the temperature sensing line sends a fire hazard signal to the automatic fire extinguishing system controller, and the automatic fire extinguishing system controller sends a fire extinguishing signal to the control end of the solenoid valve; When a fire hazard occurs in a subsystem, the temperature sensor, smoke sensor, and thermal camera respectively send an ambient temperature value, a smoke density value, and a thermal infrared value to the wire-controlled chassis controller; the wire-controlled chassis controller receives the ambient temperature value, the smoke density value, and the thermal infrared value. When the ambient temperature value exceeds the ambient temperature setting value, the smoke density value exceeds the smoke density setting value, or the thermal infrared value exceeds the thermal infrared setting value, it is determined that a fire hazard exists in the subsystem, and the wire-controlled chassis controller sends a fire hazard electrical signal to the automatic fire extinguishing system controller, and the automatic fire extinguishing system controller sends a fire extinguishing signal to the control end of the solenoid valve; The control end of the solenoid valve is connected to the pipeline after receiving the fire extinguishing signal, the solenoid valve is connected to the pipeline, the nozzle sprays the fire extinguishing agent, and the engine fire extinguishing operation is implemented.

4. The fire extinguishing method of the wire-controlled trigger device of the automatic fire extinguishing system of the unmanned mining vehicle as claimed in claim 3, characterized in that: When a fire hazard is found in the vehicle, the manual trigger switch is operated, and the control end of the solenoid valve receives the fire extinguishing signal and connects the pipeline, and the sprinkler sprays the fire extinguishing agent, and the sprinkler implements the manual fire extinguishing operation.

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