Door opening brake protection device for mining anti-explosion trackless rubber-tyred vehicle

Abstract

The utility model discloses a door opening brake protection device for a mining anti-explosion trackless rubber-tyred vehicle. The device comprises a manual parking valve, a hydraulic brake, an energy accumulator, an oil tank, an electromagnetic directional valve, a first relay, an electric cabinet, an angle sensor and a PLC (programmable logic controller), the angle sensor and the PLC are arranged at a door hinge, the manual parking valve is provided with a handle, an oil inlet of the manual parking valve is connected with the energy accumulator, and an oil return port of the manual parking valve is in liquid connection with the oil tank. An electric control end of the electromagnetic reversing valve is connected with the electric cabinet through a first relay, an oil return port of the electromagnetic reversing valve is connected with the oil tank, and an oil inlet of the electromagnetic reversing valve is connected with a working port of the manual stop valve; the input end of the PLC is connected with the angle sensor, and the output end of the PLC is connected with the first relay. A door opening linkage braking mechanism can be formed, the effect that the vehicle door is opened, namely the vehicle is braked in real time is achieved, and safety accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the field of mine explosion-proof trackless rubber-tired vehicles, specifically to a door opening brake protection device for mine explosion-proof trackless rubber-tired vehicles. Background Technology

[0002] Explosion-proof trackless rubber-tired vehicles are suitable for transporting loose materials such as coal and sand, and can also be used to transport mechanical equipment. They can perform functions such as carrying, unloading, and traction, and are the main equipment for underground trackless mining. Explosion-proof rubber-tired vehicles mainly operate in flammable and explosive environments such as gas and coal dust, requiring them to be explosion-proof, and their explosion-proof performance must meet the requirements of the "Technical Inspection Specification for Explosion-proof Diesel Engines for Coal Mines".

[0003] Existing trackless rubber-tired vehicles lack a door-linked braking mechanism, requiring the handbrake to be engaged and the engine turned off before parking. However, these vehicles generate significant noise during operation. If communication between passengers and the driver is delayed or misunderstanding, and passengers open the door to exit before the driver stops, an accident could occur. Another scenario is that in the event of a collision, if the driver is unable to engage the handbrake and jumps out, the unbraked vehicle will accelerate, causing further damage to the vehicle and any objects impacted. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a door opening braking protection device for mine explosion-proof trackless rubber-tired vehicles. This device can form a door opening linkage braking mechanism, achieving the effect of real-time vehicle braking when the door is opened, thus avoiding the occurrence of safety accidents.

[0005] To achieve the above objectives, the present invention proposes the following technical solution:

[0006] A door-opening braking protection device for an explosion-proof trackless rubber-tired mining vehicle includes a manual stop valve, a hydraulic brake, an accumulator, an oil tank, an electromagnetic reversing valve, a first relay, an electrical control box, an angle sensor located at the door hinge, and a PLC controller.

[0007] The manual parking valve is used by the driver to manually operate the parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake is the actuator for parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake is equipped with a hydraulic cylinder, friction pads and spring. The installation and use of the manual parking valve and the hydraulic brake are existing technologies.

[0008] The manual stop valve is equipped with a handle, an oil inlet P, an oil return port T, and working ports A and B. The oil inlet P of the manual stop valve is connected to the accumulator for liquid flow, and the oil return port T of the manual stop valve is connected to the oil tank for liquid flow.

[0009] The electromagnetic directional valve has an oil inlet P, an oil return port T, a working port A, a working port B, and an electrical control terminal K. The electrical control terminal K of the electromagnetic directional valve is connected to the electrical control box through a first relay. The oil return port T of the electromagnetic directional valve is connected to the oil tank. The oil inlet P of the electromagnetic directional valve is connected to the working port B of the manual stop valve. The angle sensor is used to detect the rotation angle of the hinge at the door. The input terminal of the PLC controller is connected to the angle sensor, and the output terminal of the PLC controller is connected to the first relay.

[0010] The accumulator is the hydraulic power source of this device, which can supply oil for a short period of time and maintain system pressure; the oil tank is used to receive return oil. The structure, working principle and installation and use of the accumulator and oil tank on the mine explosion-proof trackless rubber-tired vehicle are existing technologies.

[0011] The installation and use of angle sensors on door hinges is existing technology. For example, a rotary potentiometer is fixed coaxially with the hinge shaft. The resistance value is changed by rotating the shaft, thereby outputting a signal of angle change. Another example is a Hall sensor, which is installed on the stationary side of the door hinge and a magnet is installed on the rotating side of the door hinge. When the door rotates, the direction of the magnetic field changes, thereby outputting a signal of angle change.

[0012] Preferably, the handbrake parking valve is equipped with a handbrake sensor, which is connected to the input terminal of the PLC controller.

[0013] Preferably, the electromagnetic directional valve is a mining explosion-proof electromagnetic directional valve.

[0014] Preferably, it also includes a second relay and an audible and visual alarm, wherein the audible and visual alarm is connected to the electrical control box via the second relay, and the second relay is connected to the output terminal of the PLC controller.

[0015] When any door hinge rotates, the angle sensor sends a signal to the PLC controller. The PLC controller then sends an energizing command to the first and second relays, energizing the electromagnetic reversing valve and unloading the hydraulic oil in the hydraulic brake to achieve parking brake operation. At the same time, the audible and visual alarm sounds to remind the driver and passengers that the door is open.

[0016] Preferably, multiple angle sensors are provided and are located at the hinges of each door, and the angle sensors are connected in parallel to the input terminal of the PLC controller.

[0017] In the initial state, the solenoid directional valve is not energized, and the working port B and the oil inlet P of the solenoid directional valve are connected. The braking of the explosion-proof trackless rubber-wheeled vehicle is controlled by operating the manual stop valve handle.

[0018] Assuming the manual stop valve is not activated, when any door hinge rotates while the explosion-proof trackless rubber-tired vehicle is running or stopped, the angle sensor sends a signal to the PLC controller. The PLC controller then sends a power-on command to the first relay, causing the electrical control box to supply power to the electrical control terminal K of the solenoid directional valve. This energizes the solenoid directional valve, causing the valve core to move and connect the working port B of the solenoid directional valve to the return port T. The hydraulic oil in the hydraulic brake is then unloaded and output through the solenoid directional valve, putting the hydraulic brake into a braking state.

[0019] When the angle sensor detects that the door hinge has returned to a stable zero-rotation state, i.e. the door is closed, it sends a signal to the PLC controller. The PLC controller then sends a power-off command to the first relay, causing the electrical control box to stop supplying power to the electrical control terminal K of the solenoid directional valve. This de-energizes the solenoid directional valve, causing the valve core to move and connect the working port B of the solenoid directional valve to the oil inlet P. Hydraulic oil is then input to the hydraulic brake, releasing the parking brake.

[0020] If the manual parking valve is activated, meaning the hydraulic brake is in braking mode, the door hinges will rotate. The angle sensor will still send a signal to the PLC controller, which will then send a power-on command to the first relay. This will cause the electrical control box to supply power to the solenoid directional valve's control terminal K, energizing the solenoid directional valve. The valve core will then move, connecting the working port B of the solenoid directional valve to the return port T. The hydraulic oil in the hydraulic brake will then be further unloaded and output through the solenoid directional valve to ensure that the hydraulic brake is in braking mode.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model incorporates an electromagnetic reversing valve, a first relay, an electrical control box, an angle sensor located at the door hinge, and a PLC controller. The electrical control terminal of the electromagnetic reversing valve is connected to the electrical control box via the first relay. The angle sensor detects the rotation angle of the door hinge. The input terminal of the PLC controller is connected to the angle sensor, and the output terminal of the PLC controller is connected to the first relay, forming a door-opening linkage braking mechanism. That is, the opening status of the door is determined based on the rotation of the door hinge, and the parking brake is applied based on the opening status of the door.

[0023] By adopting the above solution, this utility model can form a door-opening linkage braking mechanism, achieving the effect of real-time vehicle braking when the door is opened, thus avoiding the occurrence of safety accidents. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the connections of the components when the electromagnetic reversing valve is energized in the first embodiment.

[0026] Figure 2 This is a schematic diagram of the connections of the components of the electromagnetic reversing valve in the first embodiment when it is in a de-energized state.

[0027] Figure 3 This is a schematic diagram of the connections between the components in the second embodiment.

[0028] Figure 4 This is a schematic diagram of the connections between the components in the third embodiment.

[0029] In the diagram, 1-accumulator, 2-hydraulic brake, 3-electromagnetic directional valve, 4-manual stop valve, 5-first relay, 6-PLC controller, 7-angle sensor, 8-electric control box, 9-second relay, 10-audible and visual alarm, 11-oil tank, 41-handbrake sensor. Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] First embodiment:

[0035] like Figure 1 As shown, a door opening brake protection device for a mine explosion-proof trackless rubber-tired vehicle includes a manual stop valve 4, a hydraulic brake 2, an accumulator 1, an oil tank 11, an electromagnetic reversing valve 3, a first relay 5, an electrical control box 8, an angle sensor 7 located at the door hinge, and a PLC controller 6.

[0036] The manual parking valve 4 is used by the driver to manually operate the parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake 2 is the actuator for parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake 2 is equipped with a hydraulic cylinder, friction pads and spring. The installation and use of the manual parking valve 4 and the hydraulic brake 2 are existing technologies.

[0037] The manual stop valve 4 is equipped with a handle, an oil inlet P, an oil return port T, and working ports A and B. The oil inlet P of the manual stop valve 4 is connected to the accumulator 1 through a liquid flow, and the oil return port T of the manual stop valve 4 is connected to the oil tank 11 through a liquid flow.

[0038] The electromagnetic reversing valve 3 has an oil inlet P, an oil return port T, a working port A, a working port B, and an electrical control terminal K. The electrical control terminal K of the electromagnetic reversing valve 3 is connected to the electrical control box 8 through the first relay 5. The oil return port T of the electromagnetic reversing valve 3 is connected to the oil tank 11. The oil inlet P of the electromagnetic reversing valve 3 is connected to the working port B of the manual stop valve 4. The angle sensor 7 is used to detect the rotation angle of the hinge at the door. The input terminal of the PLC controller 6 is connected to the angle sensor 7, and the output terminal of the PLC controller 6 is connected to the first relay 5.

[0039] Accumulator 1 is the hydraulic power source of this device, which can supply oil for a short period of time and maintain system pressure; oil tank 11 is used to receive return oil. The structure, working principle and installation and use of accumulator 1 and oil tank 11 on mine explosion-proof trackless rubber-tired vehicle are existing technologies.

[0040] In the initial state, the electromagnetic reversing valve 3 is not energized, and the working port B and the oil inlet P of the electromagnetic reversing valve 3 are connected. The braking of the explosion-proof trackless rubber-wheeled vehicle is achieved by operating the handle of the manual stop valve 4.

[0041] Assuming the manual parking valve 4 is in the off state, when any door hinge rotates while the explosion-proof trackless rubber-tired vehicle is running or stopped, the angle sensor 7 will send a signal to the PLC controller 6. The PLC controller 6 will then send a power-on command to the first relay 5, causing the electrical control box 8 to supply power to the electrical control terminal K of the solenoid directional valve 3. This energizes the solenoid directional valve 3, causing the valve core to move and connecting the working port B of the solenoid directional valve 3 with the return port T. The hydraulic oil in the hydraulic brake 2 is then unloaded and output through the solenoid directional valve 3, putting the hydraulic brake 3 into a braking state. Figure 1 As shown.

[0042] When the angle sensor 7 detects that the door hinge has returned to a stable zero-rotation state, i.e., the door is closed, it sends a signal to the PLC controller 6. The PLC controller 6 then sends a power-off command to the first relay 5, causing the electrical control box 8 to stop supplying power to the electrical control terminal K of the solenoid directional valve 3. This de-energizes the solenoid directional valve 3, causing the valve core to move and connect the working port B of the solenoid directional valve 3 to the oil inlet P. Hydraulic oil then flows into the hydraulic brake 2, releasing the parking brake. Figure 2 As shown.

[0043] If the manual parking valve 4 is activated, meaning the hydraulic brake 2 is in a braking state, the door hinge will rotate. The angle sensor 7 will still send a signal to the PLC controller 6. The PLC controller 6 will send a power-on command to the first relay 5, causing the electrical control box 8 to supply power to the electrical control terminal K of the solenoid directional valve 3. This will energize the solenoid directional valve 3, causing the valve core to move and connect the working port B of the solenoid directional valve 3 with the return port T. The hydraulic oil in the hydraulic brake 2 will then be further unloaded and output through the solenoid directional valve 3 to ensure that the hydraulic brake 2 is in a braking state.

[0044] Second embodiment:

[0045] like Figure 3 As shown, a door opening brake protection device for a mine explosion-proof trackless rubber-tired vehicle includes a manual stop valve 4, a hydraulic brake 2, an accumulator 1, an oil tank 11, an electromagnetic reversing valve 3, a first relay 5, an electrical control box 8, an angle sensor 7 located at the door hinge, and a PLC controller 6.

[0046] The manual parking valve 4 is used by the driver to manually operate the parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake 2 is the actuator for parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake 2 is equipped with a hydraulic cylinder, friction pads and spring. The installation and use of the manual parking valve 4 and the hydraulic brake 2 are existing technologies.

[0047] The manual stop valve 4 is equipped with a handle, an oil inlet P, an oil return port T, and working ports A and B. The oil inlet P of the manual stop valve 4 is connected to the accumulator 1 through a liquid flow, and the oil return port T of the manual stop valve 4 is connected to the oil tank 11 through a liquid flow.

[0048] The electromagnetic reversing valve 3 has an oil inlet P, an oil return port T, a working port A, a working port B, and an electrical control terminal K. The electrical control terminal K of the electromagnetic reversing valve 3 is connected to the electrical control box 8 through the first relay 5. The oil return port T of the electromagnetic reversing valve 3 is connected to the oil tank 11. The oil inlet P of the electromagnetic reversing valve 3 is connected to the working port B of the manual stop valve 4. The angle sensor 7 is used to detect the rotation angle of the hinge at the door. The input terminal of the PLC controller 6 is connected to the angle sensor 7, and the output terminal of the PLC controller 6 is connected to the first relay 5.

[0049] Accumulator 1 is the hydraulic power source of this device, which can supply oil for a short period of time and maintain system pressure; oil tank 11 is used to receive return oil. The structure, working principle and installation and use of accumulator 1 and oil tank 11 on mine explosion-proof trackless rubber-tired vehicle are existing technologies.

[0050] It also includes a second relay 9 and an audible and visual alarm 10, wherein the audible and visual alarm 10 is connected to the electrical control box 8 via the second relay 9, and the second relay 9 is connected to the output terminal of the PLC controller 6.

[0051] When any door hinge rotates, the angle sensor 7 sends a signal to the PLC controller 6. The PLC controller 6 simultaneously sends an energizing command to the first relay 5 and the second relay 9, which energizes the electromagnetic reversing valve 3, unloads the hydraulic oil in the hydraulic brake 2, and realizes the parking brake. At the same time, the audible and visual alarm 10 sounds and lights to remind the driver and passengers that the door is open.

[0052] Third embodiment:

[0053] like Figure 1 As shown, a door opening brake protection device for a mine explosion-proof trackless rubber-tired vehicle includes a manual stop valve 4, a hydraulic brake 2, an accumulator 1, an oil tank 11, an electromagnetic reversing valve 3, a first relay 5, an electrical control box 8, an angle sensor 7 located at the door hinge, and a PLC controller 6.

[0054] The manual parking valve 4 is used by the driver to manually operate the parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake 2 is the actuator for parking brake and release brake of the explosion-proof trackless rubber-tired vehicle. The hydraulic brake 2 is equipped with a hydraulic cylinder, friction pads and spring. The installation and use of the manual parking valve 4 and the hydraulic brake 2 are existing technologies.

[0055] The manual stop valve 4 is equipped with a handle, an oil inlet P, an oil return port T, and working ports A and B. The oil inlet P of the manual stop valve 4 is connected to the accumulator 1 through a liquid flow, and the oil return port T of the manual stop valve 4 is connected to the oil tank 11 through a liquid flow.

[0056] The electromagnetic reversing valve 3 has an oil inlet P, an oil return port T, a working port A, a working port B, and an electrical control terminal K. The electrical control terminal K of the electromagnetic reversing valve 3 is connected to the electrical control box 8 through the first relay 5. The oil return port T of the electromagnetic reversing valve 3 is connected to the oil tank 11. The oil inlet P of the electromagnetic reversing valve 3 is connected to the working port B of the manual stop valve 4. The angle sensor 7 is used to detect the rotation angle of the hinge at the door. The input terminal of the PLC controller 6 is connected to the angle sensor 7, and the output terminal of the PLC controller 6 is connected to the first relay 5.

[0057] Accumulator 1 is the hydraulic power source of this device, which can supply oil for a short period of time and maintain system pressure; oil tank 11 is used to receive return oil. The structure, working principle and installation and use of accumulator 1 and oil tank 11 on mine explosion-proof trackless rubber-tired vehicle are existing technologies.

[0058] The handbrake parking valve 4 is equipped with a handbrake sensor 41, which is connected to the input terminal of the PLC controller 6.

[0059] In the initial state, the electromagnetic reversing valve 3 is not energized, and the working port B and the oil inlet P of the electromagnetic reversing valve 3 are connected. The braking of the explosion-proof trackless rubber-wheeled vehicle is achieved by operating the handle of the manual stop valve 4.

[0060] If the manual parking valve 4 is not activated, the PLC controller does not receive a signal from the handbrake sensor. When any door hinge rotates, the angle sensor 7 sends a signal to the PLC controller 6. The PLC controller 6 then sends a power-on command to the first relay 5, causing the electrical control box 8 to supply power to the electrical control terminal K of the solenoid directional valve 3. This energizes the solenoid directional valve 3, causing the valve core to move and connect the working port B of the solenoid directional valve 3 with the return port T. The hydraulic oil in the hydraulic brake 2 is then unloaded and output through the solenoid directional valve 3, putting the hydraulic brake 3 into a braking state. Figure 1 As shown.

[0061] When the angle sensor 7 detects that the door hinge has returned to a stable zero-rotation state, i.e., the door is closed, it sends a signal to the PLC controller 6. The PLC controller 6 then sends a power-off command to the first relay 5, causing the electrical control box 8 to stop supplying power to the electrical control terminal K of the solenoid directional valve 3. This de-energizes the solenoid directional valve 3, causing the valve core to move and connect the working port B of the solenoid directional valve 3 to the oil inlet P. Hydraulic oil then flows into the hydraulic brake 2, releasing the parking brake. Figure 2 As shown.

[0062] If the manual stop valve 4 is activated, meaning the hydraulic brake 2 is in a braking state, and the handbrake sensor sends a signal to the PLC controller 6 indicating that the handbrake is engaged, then the PLC controller 6 will not take any action regardless of whether the hinge rotates.

[0063] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A door-opening braking protection device for a mine explosion-proof trackless rubber-tired vehicle, comprising a manual stop valve, a hydraulic brake, an accumulator, and an oil tank, wherein the manual stop valve is provided with a handle, the oil inlet of the manual stop valve is connected to the accumulator for fluid circulation, and the oil return port of the manual stop valve is connected to the oil tank for fluid circulation, characterized in that: It also includes an electromagnetic reversing valve, a first relay, an electrical control box, an angle sensor located at the door hinge, and a PLC controller. The electrical control terminal of the electromagnetic reversing valve is connected to the electrical control box through the first relay. The return port of the electromagnetic reversing valve is connected to the oil tank, and the inlet port of the electromagnetic reversing valve is connected to the working port of the manual stop valve. The input terminal of the PLC controller is connected to the angle sensor, and the output terminal of the PLC controller is connected to the first relay.

2. The door-opening braking protection device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that: The electromagnetic reversing valve is a mining explosion-proof electromagnetic reversing valve.

3. The door-opening braking protection device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that: It also includes a second relay and an audible and visual alarm, wherein the audible and visual alarm is connected to the electrical control box via the second relay, and the second relay is connected to the output terminal of the PLC controller.

4. The door-opening braking protection device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that: Multiple angle sensors are provided and are located at the hinges of each door. The angle sensors are connected in parallel to the input terminal of the PLC controller.

5. The door-opening brake protection device for a mine explosion-proof trackless rubber-tired vehicle according to claim 1, characterized in that: The manual stop valve is equipped with a handbrake sensor, which is connected to the input terminal of the PLC controller.

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