Throttle control device for vehicle
Technical Field
The present invention relates to a vehicle, and more particularly to a throttle control device for a vehicle.
Background
An accelerator pedal and a brake pedal of the vehicle are arranged in parallel, and a driver controls driving through the accelerator pedal and braking through the brake pedal according to the traffic road condition in the driving process. In order to quickly respond, the accelerator pedal and the brake pedal are arranged at a relatively short distance, but hidden dangers are buried for safe driving due to the design, because the accelerator pedal and the brake pedal are arranged at a relatively short distance, misoperation is easy to occur, particularly, when an emergency occurs, the accelerator pedal is mistakenly stepped on as the brake pedal, vehicle collision occurs slightly, and major traffic accidents occur seriously, and the design is very unsafe. As shown in figure 3, the throttle control device in the prior art comprises a hydraulic oil door controller 30, an oil cup 31 and a throttle cylinder 32, wherein the hydraulic oil door controller 30 comprises a mounting frame 30-1, a throttle pedal 30-2, a piston rod 30-3, a cylinder body 30-4, a piston 30-5, a sealing ring 30-6 and a spring 30-7, the throttle pedal 30-2 is hinged on the mounting frame 30-1, the left end of the piston rod 30-3 is hinged with the throttle pedal 30-2, the right end of the piston rod 30-3 is hinged with the left end of the piston 30-5, the right end of the piston 30-5 is connected with the sealing ring 30-6, two ends of the spring 30-7 respectively abut against the right walls of the piston 30-5 and the cylinder body 30-4, the cylinder wall of the cylinder body 30-4 is provided with a first, the right wall of the cylinder body 30-4 is provided with a second oil port 30-4-2, the first oil port 30-4-1 of the cylinder body 30-4 is communicated with a rodless cavity of the accelerator cylinder 32, the second oil port 30-4-2 of the cylinder body 30-4 is communicated with an oil cup 31, and the installation position of the oil cup 31 on the vehicle is higher than that of the cylinder body 30-4. A piston rod 32-1 of the accelerator oil cylinder 32 is fixedly connected with an accelerator pull rod of the engine.
When a driver steps on an accelerator pedal 30-2 of the hydraulic oil door controller 30, the piston rod 30-3 drives the piston 30-5 to move rightwards, so that the sealing ring 30-6 is abutted against the right wall of the cylinder body 30-4, and hydraulic oil in the oil cup 31 cannot flow into the cylinder body 30-4. When the accelerator pedal 30-2 of the hydraulic oil door controller 30 is continuously stepped on, the sealing ring 30-6 is deformed and tightly pressed against the right wall of the cylinder body 30-4, hydraulic oil in the cylinder body 30-4 enters a rodless cavity of the accelerator cylinder 32 through the first oil port 30-4-1, and a piston rod 32-1 of the accelerator cylinder 32 drives an accelerator pull rod to move leftwards stably, so that an oil filling door of a vehicle can be realized. The accelerator control device is very unsafe because the accelerator cannot be automatically cut off and the brake cannot be automatically carried out when the driver steps on the accelerator by mistake.
Disclosure of Invention
The invention aims to provide an accelerator control device of a vehicle, which can automatically cut off an accelerator and automatically brake when a driver steps on the accelerator by mistake.
In order to achieve the purpose, the invention adopts the following technical scheme: a vehicle accelerator control device comprises a hydraulic oil door controller, an oil cup and an accelerator oil cylinder; the hydraulic oil door controller comprises a mounting rack, an accelerator pedal, a piston rod, a cylinder body, a piston, a sealing ring and a spring; a first oil port and a second oil port are formed in the cylinder body; the throttle oil cylinder comprises a piston rod; the second oil port of the cylinder body is communicated with the oil cup; the mounting position of the oil cup on the vehicle is higher than that of the cylinder body; a piston rod of the accelerator oil cylinder is fixedly connected with an accelerator pull rod of the engine;
the device also comprises a flow sensor, a main controller, a shuttle valve, an electromagnetic valve and a switch; an oil inlet of the flow sensor is communicated with a first oil port of the cylinder body, an oil outlet of the flow sensor is communicated with an oil inlet P port of the electromagnetic valve, an execution port A port of the electromagnetic valve is communicated with a rodless cavity of the accelerator oil cylinder, and an execution port B port of the electromagnetic valve is communicated with a first oil inlet P1 port of the shuttle valve; the wiring terminal K of the electromagnetic valve, the flow sensor and the switch are electrically connected or wirelessly communicated with the main controller; when the flow value of the flow sensor is larger than the preset flow value in the main controller, the main controller controls a terminal K of the electromagnetic valve to be electrified; when the switch is switched on, the terminal K of the electromagnetic valve is controlled by the main controller to lose power.
The invention has the following positive effects: (1) because the oil inlet of the flow sensor is communicated with the first oil port of the cylinder body, the oil outlet of the flow sensor is communicated with the oil inlet P port of the electromagnetic valve, the execution port A port of the electromagnetic valve is communicated with the rodless cavity of the accelerator oil cylinder, and the execution port B port of the electromagnetic valve is communicated with the first oil inlet P1 port of the shuttle valve; the wiring terminal K of the electromagnetic valve, the flow sensor and the switch are electrically connected or wirelessly communicated with the main controller; when the flow value of the flow sensor is larger than the preset flow value in the main controller, the main controller controls a terminal K of the electromagnetic valve to be electrified; when the switch is switched on, the main controller controls the terminal K of the electromagnetic valve to lose power, and because the invention is used, the second oil inlet P2 port of the shuttle valve is communicated with the brake master cylinder, the execution port A port of the shuttle valve 3 is communicated with the rodless cavity of the brake slave cylinder, therefore, when the accelerator pedal is mistakenly stepped on as the brake pedal in an emergency situation, the flow of the hydraulic oil from the first oil port of the cylinder body is very large, the flow value measured by the flow sensor is far larger than the preset flow value in the main controller, the main controller controls the electromagnetic valve to be electrified, the hydraulic oil from the first oil port of the cylinder body enters the first oil inlet P1 of the shuttle valve through the electromagnetic valve and then reaches the brake cylinder through the execution port A of the shuttle valve, so that the vehicle can be braked, the brake can be automatically carried out, and simultaneously, the throttle oil cylinder drives the throttle pull rod to move rightwards under the action of the spring so as to cut off the throttle of the vehicle. Namely, when the driver steps on the accelerator by mistake, the accelerator can be automatically cut off, and the brake can be automatically carried out, so that the device is very safe.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic view of the present invention in connection with a vehicle braking system;
FIG. 3 is a schematic diagram of a prior art throttle control;
fig. 4 is a schematic diagram of a prior art braking device.
The reference numbers in the above figures are as follows: the hydraulic control system comprises a flow sensor 1, a main controller 2, a shuttle valve 3, an electromagnetic valve 4, a switch 5, a hydraulic oil valve controller 30, a mounting rack 30-1, an accelerator pedal 30-2, a piston rod 30-3, a cylinder body 30-4, a first oil port 30-4-1, a second oil port 30-4-2, a piston 30-5, a sealing ring 30-6, a spring 30-7, an oil cup 31, an accelerator oil cylinder 32, a piston rod 32-1, a master pump 40, a brake sub-pump 41 and a brake oil cup 42.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the examples given.
As shown in fig. 1, a throttle control device for a vehicle includes a hydraulic valve controller 30, an oil cup 31 and a throttle cylinder 32; the hydraulic oil door controller 30 adopts a MICO hydraulic oil door controller with the model number of 12-460 and 185. The hydraulic oil door controller 30 comprises a mounting rack 30-1, an accelerator pedal 30-2, a piston rod 30-3, a cylinder body 30-4, a piston 30-5, a sealing ring 30-6 and a spring 30-7; the cylinder body 30-4 is provided with a first oil port 30-4-1 and a second oil port 30-4-2; the accelerator oil cylinder 32 comprises a piston rod 32-1; the second oil port 30-4-2 of the cylinder body 30-4 is communicated with the oil cup 31; the mounting position of the oil cup 31 on the vehicle is higher than that of the cylinder 30-4; a piston rod 32-1 of the accelerator oil cylinder 32 is fixedly connected with an accelerator pull rod of the engine;
the device also comprises a flow sensor 1, a main controller 2, a shuttle valve 3, an electromagnetic valve 4 and a switch 5; an oil inlet of the flow sensor 1 is communicated with a first oil port 30-4-1 of the cylinder body 30-4, an oil outlet of the flow sensor 1 is communicated with an oil inlet P port of the electromagnetic valve 4, an execution port A port of the electromagnetic valve 4 is communicated with a rodless cavity of the accelerator oil cylinder 32, and an execution port B port of the electromagnetic valve 4 is communicated with a first oil inlet P1 port of the shuttle valve 3; the terminal K of the electromagnetic valve 4, the flow sensor 1 and the switch 5 are electrically connected or wirelessly communicated with the main controller 2; when the flow value of the flow sensor 1 is larger than the preset flow value in the main controller 2, the main controller 2 controls a terminal K of the electromagnetic valve 4 to be electrified; when the switch 5 is switched on, the terminal K of the electromagnetic valve 4 is controlled by the main controller 2 to lose power.
The main controller 2 is a PLC programmable logic controller, and the model of the main controller 2 is Mitsubishi F multiplied by 3U or Siemens S7-200. The flow sensor 1 is of the type HQLWGY or HQLWGB. The flow sensor 1 is used for measuring a flow signal of hydraulic oil from a first oil port 30-4-1 of the hydraulic oil door controller 30, transmitting the signal measured by the flow sensor 1 to the main controller 2, comparing the signal with a preset flow value in the main controller 2, when the preset flow value in the main controller 2 is that the accelerator pedal 30-2 is treaded down under a normal state, the maximum value of the flow of the hydraulic oil from the first oil port 30-4-1 of the cylinder body 30-4 is reached, when a driver treads the brake pedal and mistakenly steps on the accelerator pedal 30-2, the flow value measured by the flow sensor 1 is far larger than the preset flow value in the main controller 2, the main controller 2 controls the electromagnetic valve 4 to be electrified, and the electromagnetic valve 4 is electrified to perform a reversing action. Under normal conditions, the terminal K of the electromagnetic valve 4 is in a power-off state, when the terminal K of the electromagnetic valve 4 is in the power-off state, the port P of the oil inlet of the electromagnetic valve 4 is communicated with the port A of the execution port, and when the terminal K of the electromagnetic valve 4 is in the power-on state, the port P of the oil inlet of the electromagnetic valve 4 is communicated with the port B of the execution port. The switch 5 is mainly used for relieving the state that the vehicle is braked and the accelerator is cut off after the accelerator is stepped on by mistake.
The invention needs to be used together with the vehicle brake device when in use, the vehicle brake device in the prior art comprises a master cylinder 40, a brake cylinder 41 and a brake oil cup 42 as shown in fig. 4, the master cylinder 40 is respectively communicated with the brake cylinder 41 and the brake oil cup 42, and the brake cylinder 41 is connected with a brake. When the invention is used, as shown in fig. 2, a second oil inlet port P2 of the shuttle valve 3 is communicated with the master cylinder 40, and an execution port a of the shuttle valve 3 is communicated with a rodless cavity of the brake cylinder 41; the mounting frame 30-1 of the hydraulic oil door controller 30 is fixedly connected to the bottom plate of the cab of the vehicle through screws. Hydraulic oil or brake fluid is injected into both the brake oil cup 42 and the oil cup 31.
The working principle of the invention is as follows: when the accelerator pedal 30-2 is mistakenly stepped on as the brake pedal in an emergency, because the driver can exert too hard force at the moment, the flow of the hydraulic oil from the first oil port 30-4-1 of the cylinder body 30-4 is very large, the flow value measured by the flow sensor 1 is far larger than the preset flow value in the main controller 2, the main controller 2 controls the electromagnetic valve 4 to be electrified, the electromagnetic valve 4 is electrified to perform reversing action, the oil inlet P port of the electromagnetic valve 4 is communicated with the execution port B port, the execution port A port of the electromagnetic valve 4 is communicated with the oil tank, the hydraulic oil from the first oil port 30-4-1 of the cylinder body 30-4 enters the first oil inlet P1 of the shuttle valve 3 through the electromagnetic valve 4 and then reaches the brake sub-pump 41 through the execution port A of the shuttle valve 3, and the vehicle can be braked automatically, meanwhile, hydraulic oil in a rodless cavity of the accelerator oil cylinder 32 flows into an oil tank through the electromagnetic valve 4, and the piston rod 32-1 of the accelerator oil cylinder 32 drives an accelerator pull rod to move rightwards under the action of a spring so as to cut off the accelerator of the vehicle. Namely, when the driver steps on the accelerator by mistake, the accelerator can be automatically cut off, and the brake can be automatically carried out, so that the device is very safe.
When the accelerator is normally used for filling the accelerator, the electromagnetic valve 4 is in a power-off state, the oil inlet P of the electromagnetic valve 4 is communicated with the execution port A, hydraulic oil from the first oil port 30-4-1 of the cylinder body 30-4 enters the rodless cavity of the accelerator cylinder 32 through the electromagnetic valve 4, and the piston rod 32-1 of the accelerator cylinder 32 drives the accelerator pull rod to move leftwards stably, so that the accelerator can be used for filling the vehicle. During normal braking, hydraulic oil from the master brake pump 40 enters the second oil inlet P2 of the shuttle valve 3 and then reaches the wheel cylinder 41 through the port a of the shuttle valve 3 to brake the vehicle.