CN109109842B - Parking brake control system for reducing accidents caused by vehicle parking on slope - Google Patents

Parking brake control system for reducing accidents caused by vehicle parking on slope Download PDF

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Publication number
CN109109842B
CN109109842B CN201811029205.7A CN201811029205A CN109109842B CN 109109842 B CN109109842 B CN 109109842B CN 201811029205 A CN201811029205 A CN 201811029205A CN 109109842 B CN109109842 B CN 109109842B
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port
valve
parking brake
vehicle
air
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CN201811029205.7A
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CN109109842A (en
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不公告发明人
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Nanjing Langhe Intelligent Control Research Institute Co.,Ltd.
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Nanjing Langhe Intelligent Control Research Institute Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/24—Single initiating means operating on more than one circuit, e.g. dual circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/28—Valves specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/04—Driver's valves
    • B60T15/041—Driver's valves controlling auxiliary pressure brakes, e.g. parking or emergency brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B60W10/182—Conjoint control of vehicle sub-units of different type or different function including control of braking systems including control of parking brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18027—Drive off, accelerating from standstill

Abstract

The parking brake control system comprises a parking brake oil cylinder and a parking brake, wherein the parking brake comprises a moving plate and a fixed plate, a piston rod of the parking brake oil cylinder is fixedly connected with the moving plate of the parking brake, and the parking brake control system further comprises a power element, a pneumatic control hydraulic valve, a gas bag, a gear selecting reversing valve, a gear selecting cylinder, a shuttle valve, a double-pressure valve, a gas throttle, a throttle cylinder, a pressure sensor, a controller, an electromagnetic valve and a rotating speed sensor. The invention makes the parking brake automatically released when the vehicle starts running. Therefore, the brake disc of the vehicle cannot be worn at an accelerated speed, and the brake pad cannot be hardened after heating. The invention makes the vehicle automatically have parking brake when parking. So that no accident occurs when the vehicle is stopped on a slope. The invention has the advantages that when the vehicle is temporarily parked and is also hung on the forward gear, the parking brake is automatically arranged, so that accidents can not happen when the vehicle is parked on a slope.

Description

Parking brake control system for reducing accidents caused by vehicle parking on slope
Technical Field
The invention relates to a vehicle, in particular to a parking brake control system for reducing accidents caused by the vehicle parking on a slope.
Background
When the vehicle starts to operate, the parking brake is generally required to be released, and when the vehicle stops, the parking brake is required to be carried out. However, it often happens in practice that the vehicle starts to run without releasing the parking brake, which causes accelerated wear of the brake disc of the vehicle and hardening of the brake pad after heating. It may also happen that the parking brake is not applied when the vehicle is parked, which is prone to accidents when the vehicle is parked on a slope. In addition, when the vehicle needs to be temporarily stopped, the gear selecting reversing valve of the vehicle is still hooked on a forward gear, and the vehicle is also required to be stopped and braked, otherwise, accidents are easy to happen when the vehicle is on a slope.
Disclosure of Invention
The invention aims to provide a parking brake control system of a vehicle, which can not accelerate the abrasion of a brake disc of the vehicle, can not harden a brake pad and can not cause accidents.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a parking brake control system of vehicle, includes parking brake hydro-cylinder and parking brake, and parking brake includes rotor and stator, parking brake hydro-cylinder's piston rod and parking brake's rotor fixed connection, its innovation point lies in:
the system also comprises a power element, a pneumatic control hydraulic valve, an air bag, a gear selection reversing valve, a gear selection cylinder, a shuttle valve, a double-pressure valve, an air throttle, an accelerator cylinder, a pressure sensor, a controller, an electromagnetic valve and a rotation speed sensor, wherein the air throttle is provided with an accelerator pedal, an air inlet P port of the gear selection reversing valve is communicated with the air bag, an execution port A port of the gear selection reversing valve is respectively communicated with a rodless cavity of the gear selection cylinder and an A port of the shuttle valve through two air channels, an execution port B port of the gear selection reversing valve is respectively communicated with a rod cavity of the gear selection cylinder and a C port of the shuttle valve through two air channels, a port B of the shuttle valve is communicated with a first air inlet P1 port of the double-pressure valve, an execution port A port of the double-pressure valve is communicated with a pneumatic control port K port of the hydraulic valve, a port P port of the pneumatic control hydraulic valve is communicated with the power element, an execution port A port of, the air inlet P mouth and the gas pocket intercommunication of solenoid valve, the execution mouth A mouth and the intercommunication of two air inlet P2 mouths of pressing the valve second of solenoid valve, the solenoid valve is connected with the controller electricity, the air inlet P mouth and the gas pocket intercommunication of gas throttle, the execution mouth A mouth of gas throttle communicate with the gas accuse mouth K mouth that has pole chamber and pressure sensor of throttle cylinder respectively through two gas passageways, the piston rod of throttle cylinder and the throttle pull rod fixed connection of engine, pressure sensor and speed sensor all are connected with the controller electricity, and speed sensor connects in the tire department of vehicle, and the controller sets for to be got to the electricity by controller control solenoid valve when speed sensor's rotational speed is greater than 0 or pressure sensor's pressure is greater than 0.
The power element is an energy accumulator.
The invention has the positive effects that: (1) when the vehicle starts to run, a driver can hang the gear selecting reversing valve on an advancing gear and simultaneously step on an accelerator pedal of an air accelerator to enable the vehicle to start to advance, so that two air inlets of the double-pressure valve have pressure simultaneously, pressure gas can enter an air control port of an air control hydraulic valve, an oil inlet of the air control hydraulic valve is communicated with an execution port, pressure oil in a power element enters a parking brake oil cylinder, a moving plate and a static plate of a parking brake are separated, and parking brake is automatically released. Therefore, the brake disc of the vehicle cannot be worn at an accelerated speed, and the brake pad cannot be hardened after heating. (2) When the vehicle is parked, the vehicle is hung on the idle gear, no pressure gas enters the first air inlet of the double-pressure valve, no pressure gas can enter the control port K of the pneumatic control hydraulic valve through the double-pressure valve, the liquid inlet of the pneumatic control hydraulic valve is not communicated with the execution port, pressure oil in the power element cannot enter the parking brake oil cylinder, the rotor and the stator of the parking brake are combined, and the vehicle automatically has parking brake. So that no accident occurs when the vehicle is stopped on a slope. (3) When the vehicle needs to be temporarily stopped, the vehicle is still hung on an advancing baffle, the first air inlet of the double-pressure valve has pressure, but a driver does not step on an accelerator pedal of an air accelerator, the pressure of the pressure sensor is zero, the rotating speed of wheels is also zero at the moment, the second air inlet of the double-pressure valve does not have pressure, the air inlet of the air control hydraulic valve is not communicated with an execution port, pressure oil in a power element cannot enter a parking brake oil cylinder, a rotor plate of a parking brake is combined with a stator plate, and the vehicle automatically has parking brake. So that no accident occurs when the vehicle is stopped on a slope.
Drawings
Fig. 1 is a diagram of the principles of the present invention.
Detailed Description
The invention is further described with reference to the following examples given in conjunction with the accompanying drawings:
as shown in fig. 1, a parking brake control system of a vehicle comprises a parking brake cylinder 1 and a parking brake 2, the parking brake 2 comprises a rotor 2-1 and a stator 2-2, a piston rod of the parking brake cylinder 1 is fixedly connected with the rotor 2-1 of the parking brake 2, and the parking brake control system has the innovation points that:
the automatic transmission system further comprises a power element 3, a pneumatic control hydraulic valve 4, a pneumatic bag 5, a gear selection reversing valve 6, a gear selection cylinder 7, a shuttle valve 8, a double-pressure valve 9, a pneumatic throttle 10, a throttle cylinder 11, a pressure sensor 12, a controller 13, an electromagnetic valve 14 and a rotating speed sensor 15, wherein the pneumatic throttle 10 is provided with a throttle pedal 10-1, the type of the pneumatic throttle 10 can be P26716-0001 or P26716-000 of Lishile, and when a driver steps on the throttle pedal 10-1 of the pneumatic throttle 10, the vehicle can move forward. An air inlet port P of the gear selecting reversing valve 6 is communicated with the air bag 5, an execution port A of the gear selecting reversing valve 6 is respectively communicated with a rodless cavity of the gear selecting cylinder 7 and an A port of the shuttle valve 8 through two air channels, an execution port B of the gear selecting reversing valve 6 is respectively communicated with a rod cavity of the gear selecting cylinder 7 and a C port of the shuttle valve 8 through two air channels, a port B of the shuttle valve 8 is communicated with a first air inlet port P1 of the double-pressure valve 9, an execution port A of the double-pressure valve 9 is communicated with an air control port K of the air control hydraulic valve 4, a liquid inlet port P of the air control hydraulic valve 4 is communicated with the power element 3, an execution port A of the air control hydraulic valve 4 is communicated with the rod cavity of the parking brake cylinder 1, the gear selecting reversing valve 6 is used for controlling the motion of the gear selecting cylinder 7, a piston rod of the gear selecting cylinder 7 is fixedly connected with a pull rod of a gear operating valve of a vehicle, the gear selecting reversing valve 6 is operated to enable, the gear of the vehicle can be in a forward gear, a backward gear or a neutral gear. An air inlet P port of the electromagnetic valve 14 is communicated with the air bag 5, an execution port A port of the electromagnetic valve 14 is communicated with a second air inlet P2 port of the double-pressure valve 9, the electromagnetic valve 14 is electrically connected with the controller 13, an air inlet P port of the air throttle 10 is communicated with the air bag 5, an execution port A port of the air throttle 10 is communicated with a rod cavity of the throttle cylinder 11 and a pneumatic control port K port of the pressure sensor 12 through two air channels, and a piston rod of the throttle cylinder 11 is fixedly connected with a throttle pull rod of the engine. The pressure sensor 12 and the rotation speed sensor 15 are both electrically connected to the controller 13, and the rotation speed sensor 15 is connected to a tire of the vehicle. The controller 13 sets the electromagnetic valve 14 to be controlled to be electrified by the controller 13 when the rotating speed of the rotating speed sensor 15 is greater than 0 or the pressure of the pressure sensor 12 is greater than 0. The rotating speed sensor 15 is used for measuring the rotating speed of the wheel, when the vehicle needs to run, and a driver steps on an accelerator pedal 10-1 of the gas accelerator 10, pressure gas in the gas bag 5 can reach a gas control port K of the pressure sensor 12 through the gas accelerator 10, and the gas control port K of the pressure sensor 12 has pressure. The controller 13 is a PLC controller, and the model of the controller 13 is Mitsubishi F multiplied by 3U or Siemens S7-200.
The power element 3 is an energy accumulator.
When the vehicle needs to start running, a driver operates the gear selection reversing valve 6 to enable the gear selection reversing valve 6 to be hung on a forward gear, an air inlet P port of the gear selection reversing valve 6 is communicated with an execution port A port, pressure gas in the air bag 5 enters a rodless cavity of the gear selection cylinder 7 after passing through the gear selection reversing valve 6, the pressure gas simultaneously enters a first air inlet P1 port of the double-pressure valve 9 through the port A of the shuttle valve 8, the driver can press down an accelerator pedal 10-1 of the air throttle 10 to enable the vehicle to start to advance, so that the pressure gas in the air bag 5 passes through the air throttle 10 to an air control port K port of the pressure sensor 12, the air control port K of the pressure sensor 12 also has pressure, the pressure of the pressure sensor 12 is greater than 0, the controller 13 controls the electromagnetic valve 14 to be electrified, the air inlet P port of the electromagnetic valve 14 is communicated with the execution port A port, the pressure gas in the air bag 5 enters a second air inlet P2 of the double-pressure valve 9 through the electromagnetic, because the first air inlet P1 port and the second air inlet P2 port of the double pressure valve 9 are both provided with pressure gas, the pressure gas can enter the control port K port of the pneumatic control hydraulic valve 4 through the execution port A port of the double pressure valve 9, so that the liquid inlet P port of the pneumatic control hydraulic valve 4 is communicated with the execution port A port, pressure oil in the power element 3 enters the rod cavity of the parking brake cylinder 1 through the pneumatic control hydraulic valve 4, the parking brake cylinder 1 overcomes the resistance of a spring, and the piston rod drives the movable plate 2-1 of the parking brake 2 to be separated from the fixed plate 2-2, so that the parking brake is automatically released. Therefore, the brake disc of the vehicle cannot be worn at an accelerated speed, and the brake pad cannot be hardened after heating.
When the vehicle needs to be parked, a driver operates the gear selecting reversing valve 6 to enable the gear selecting reversing valve 6 to be hung on a neutral gear, at the moment, an air inlet P port of the gear selecting reversing valve 6 is not communicated with an execution port A and an execution port B, no pressure gas enters a first air inlet P1 port of the double-pressure valve 9 through the shuttle valve 8, therefore, no pressure gas can enter a control port K port of the pneumatic control hydraulic valve 4 through the double-pressure valve 9, a liquid inlet P port of the pneumatic control hydraulic valve 4 is not communicated with the execution port A, pressure oil in the power element 3 cannot enter a rod cavity of the parking brake cylinder 1 through the pneumatic control hydraulic valve 4, the parking brake cylinder 1 drives a movable plate 2-1 of the parking brake 2 to be combined with a fixed plate 2-2 through a piston rod under the action of spring force, and therefore, the vehicle automatically has parking brake, and accidents can not occur when the vehicle is parked on a slope.
When the vehicle needs to be temporarily stopped, the vehicle is still hung on a forward gear, an air inlet P port of a gear selecting reversing valve 6 is communicated with an execution port A port, pressure gas in a gas bag 5 enters a rodless cavity of a gear selecting cylinder 7 after passing through the gear selecting reversing valve 6, the pressure gas simultaneously enters a first air inlet P1 port of a double pressure valve 9 through an A port of a shuttle valve 8, and because a driver does not step on an accelerator pedal 10-1 of a gas accelerator 10 at the moment, the pressure gas in the gas bag 5 cannot pass through the gas accelerator 10 to an air control port K port of a pressure sensor 12, the air control port K port of the pressure sensor 12 does not have pressure, namely the pressure is zero, the rotating speed of a rotating speed sensor 15 is also zero at the moment, a controller 13 cannot control the electromagnetic valve 14 to be electrified, the air inlet P port P of the electromagnetic valve 14 is not communicated with the execution port A port, the pressure gas in the gas bag 5 cannot enter a second air inlet P2 of the double pressure valve 9 through the electromagnetic valve, therefore, pressure gas can not enter a control port K of the pneumatic control hydraulic valve 4 through the double-pressure valve 9, a liquid inlet P of the pneumatic control hydraulic valve 4 is not communicated with an execution port A, pressure oil in the power element 3 can not enter a rod cavity of the parking brake oil cylinder 1 through the pneumatic control hydraulic valve 4, and the parking brake oil cylinder 1 drives the movable plate 2-1 and the static plate 2-2 of the parking brake 2 to be combined through the piston rod under the action of spring force, so that the vehicle automatically has parking brake, and accidents can not happen when the vehicle is parked on a slope.

Claims (2)

1. A parking brake control system of a vehicle comprises a parking brake oil cylinder (1) and a parking brake (2), wherein the parking brake (2) comprises a moving plate (2-1) and a static plate (2-2), and a piston rod of the parking brake oil cylinder (1) is fixedly connected with the moving plate (2-1) of the parking brake (2);
the parking brake control system of vehicle still includes power original paper (3), gas accuse hydrovalve (4), gas pocket (5), select to keep off switching-over valve (6), select to keep off cylinder (7), shuttle valve (8), two pressure valve (9), gas throttle (10), throttle cylinder (11), pressure sensor (12), controller (13), solenoid valve (14) and speed sensor (15), its characterized in that:
the air throttle (10) is provided with an accelerator pedal (10-1), an air inlet P port of the gear selecting reversing valve (6) is communicated with an air bag (5), an execution port A port of the gear selecting reversing valve (6) is respectively communicated with a rodless cavity of the gear selecting cylinder (7) and an A port of a shuttle valve (8) through two air channels, an execution port B port of the gear selecting reversing valve (6) is respectively communicated with a rod cavity of the gear selecting cylinder (7) and a C port of the shuttle valve (8) through two air channels, a port B of the shuttle valve (8) is communicated with a first air inlet P1 port of the double-pressure valve (9), an execution port A port of the double-pressure valve (9) is communicated with an air control port K port of an air control hydraulic valve (4), a liquid inlet P port of the air control hydraulic valve (4) is communicated with a power element (3), an execution port A port of the air control hydraulic valve (4) is communicated with a rod cavity of the parking brake cylinder (1), and an air inlet P port of the electromagnetic valve (14) is communicated with the air bag (5), an execution port A of the electromagnetic valve (14) is communicated with a second air inlet P2 of the double-pressure valve (9), the electromagnetic valve (14) is electrically connected with a controller (13), an air inlet P of the air throttle (10) is communicated with the air bag (5), the execution port A of the air throttle (10) is respectively communicated with a rod cavity of the throttle cylinder (11) and an air control port K of the pressure sensor (12) through two air channels, a piston rod of the throttle cylinder (11) is fixedly connected with a throttle pull rod of the engine, the pressure sensor (12) and the rotation speed sensor (15) are both electrically connected with the controller (13), the rotation speed sensor (15) is connected to a tire of the vehicle, and the controller (13) sets that the electromagnetic valve (14) is controlled to be electrified by the controller (13) when the rotation speed of the rotation speed sensor (15) is greater than 0 or the pressure of the pressure sensor (12) is greater than 0;
a piston rod of the gear selecting cylinder (7) is fixedly connected with a pull rod of a gear operating valve of the vehicle, and the gear selecting cylinder (7) is operated by operating the gear selecting reversing valve (6) to enable the gear of the vehicle to be in a forward gear, a backward gear or a neutral gear.
2. The parking brake control system of a vehicle according to claim 1, characterized in that: the power element (3) is an energy accumulator.
CN201811029205.7A 2016-07-29 2016-07-29 Parking brake control system for reducing accidents caused by vehicle parking on slope Active CN109109842B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811029205.7A CN109109842B (en) 2016-07-29 2016-07-29 Parking brake control system for reducing accidents caused by vehicle parking on slope

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811029205.7A CN109109842B (en) 2016-07-29 2016-07-29 Parking brake control system for reducing accidents caused by vehicle parking on slope
CN201610611049.XA CN106004840B (en) 2016-07-29 2016-07-29 The stopping brake control system of vehicle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201610611049.XA Division CN106004840B (en) 2016-07-29 2016-07-29 The stopping brake control system of vehicle

Publications (2)

Publication Number Publication Date
CN109109842A CN109109842A (en) 2019-01-01
CN109109842B true CN109109842B (en) 2020-10-30

Family

ID=57114999

Family Applications (5)

Application Number Title Priority Date Filing Date
CN201811040022.5A Active CN109263618B (en) 2016-07-29 2016-07-29 Parking brake control system of vehicle for slowing down abrasion of brake disc
CN201811029178.3A Active CN109109839B (en) 2016-07-29 2016-07-29 Parking brake control system of vehicle for reducing abrasion of brake disc
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CN106004840B (en) 2018-11-13
CN106004840A (en) 2016-10-12
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CN109109839B (en) 2020-10-30
CN109263618A (en) 2019-01-25

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