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CN108626387B - Automatic vehicle gear-selecting driving system and working method thereof - Google Patents

Automatic vehicle gear-selecting driving system and working method thereof Download PDF

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Publication number
CN108626387B
CN108626387B CN201810427741.6A CN201810427741A CN108626387B CN 108626387 B CN108626387 B CN 108626387B CN 201810427741 A CN201810427741 A CN 201810427741A CN 108626387 B CN108626387 B CN 108626387B
Authority
CN
China
Prior art keywords
port
valve
electromagnetic valve
accelerator
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201810427741.6A
Other languages
Chinese (zh)
Other versions
CN108626387A (en
Inventor
黎宝冲
杨生鹏
邓世亮
其他发明人请求不公开姓名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Baixia High Tech Industrial Park Investment Development Co Ltd
Original Assignee
Nanjing Baixia High Tech Industrial Park Investment Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Baixia High Tech Industrial Park Investment Development Co Ltd filed Critical Nanjing Baixia High Tech Industrial Park Investment Development Co Ltd
Priority to CN201810427741.6A priority Critical patent/CN108626387B/en
Publication of CN108626387A publication Critical patent/CN108626387A/en
Application granted granted Critical
Publication of CN108626387B publication Critical patent/CN108626387B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B60W30/18—Propelling the vehicle
    • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4165—Control of cooling or lubricating
    • 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
    • B60T13/14—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 using accumulators or reservoirs fed by pumps
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/32—Electric motors actuators or related electrical control means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4043—Control of a bypass valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)

Abstract

a vehicle gear selection automatic driving system and a working method thereof comprise an oil tank, a filter, a hydraulic pump, a safety valve, a gear selection valve, a reverse gear clutch, a forward gear clutch, an accelerator pedal mechanism, an accelerator main cylinder, an oil cup, an accelerator hydraulic cylinder, a parking brake, a parking hydraulic cylinder, a first electromagnetic valve, a second electromagnetic valve, a control mechanism and a parking brake valve, wherein an oil outlet of the hydraulic pump is respectively communicated with an oil inlet P port of the gear selection valve and an oil inlet P2 port of the second electromagnetic valve, an execution port A port of the gear selection valve is respectively communicated with the forward gear clutch, the oil inlet P port of the first electromagnetic valve and an oil inlet P1 port of the second electromagnetic valve, and an execution port B port of the gear selection valve is communicated with the reverse gear clutch; the port A of the execution port of the second electromagnetic valve is communicated with the port P of the oil inlet of the parking brake valve, and the port A of the execution port of the first electromagnetic valve is communicated with the rod cavity of the accelerator hydraulic cylinder.

Description

Automatic vehicle gear-selecting driving system and working method thereof
Technical Field
The invention relates to a vehicle, in particular to a gear-selecting automatic driving system of the vehicle and a working method thereof.
Background
When the vehicle is in a normal driving state, a driver generally selects a forward gear when starting driving, then releases a parking brake and then steps on the accelerator, when the vehicle needs to be parked, the accelerator is released, a neutral gear is selected and the vehicle is braked, for a working vehicle which needs to change working places frequently and has a short distance between different working places, the driver is very inconvenient to operate because the driving distance is very short and the vehicle needs to be parked frequently, and the accelerator, the gear and the brake are frequently operated, so that the gear selecting automatic driving system of the vehicle, which can switch between the normal driving state and the working state, can automatically drive the vehicle when selecting the gear in the working state and is convenient to operate, is very necessary.
Disclosure of Invention
the invention aims to provide a vehicle gear selection automatic driving system which can switch between a normal driving state and an operating state, can automatically drive when selecting gears in the operating state and is convenient to operate.
In order to achieve the purpose, the technical scheme of the invention is as follows:
The utility model provides a vehicle selects automatic driving system that keeps off, includes oil tank, filter, hydraulic pump, relief valve, selects to keep off the valve, keeps off the clutch backward, keeps off the clutch forward, throttle pedal mechanism, throttle master cylinder, oil cup, throttle pneumatic cylinder, parking brake, parking pneumatic cylinder and parking brake valve, parking brake includes rotor and stator, and its innovation point lies in: the electromagnetic valve also comprises a first electromagnetic valve, a second electromagnetic valve and a control mechanism;
an oil inlet of the hydraulic pump is communicated with an oil tank through a filter, an oil outlet of the hydraulic pump is respectively communicated with an oil inlet P port of the gear selecting valve and an oil inlet P2 port of the second electromagnetic valve through two oil channels, an execution port A port of the gear selecting valve is respectively communicated with a forward gear clutch, an oil inlet P port of the first electromagnetic valve and an oil inlet P1 port of the second electromagnetic valve through three oil channels, and an execution port B port of the gear selecting valve is communicated with a backward gear clutch;
An execution port A of the second electromagnetic valve is communicated with an oil inlet P of the parking brake valve, an execution port A of the parking brake valve is communicated with a rod cavity of the parking hydraulic cylinder, and a piston rod of the parking hydraulic cylinder is fixedly connected with a moving plate of the parking brake;
The piston rod of the accelerator main cylinder is fixedly connected with an accelerator pedal of an accelerator pedal mechanism, the oil cup is communicated with a rodless cavity of the accelerator main cylinder, the mounting height of the oil cup on a vehicle is higher than that of the accelerator main cylinder on the vehicle, the rodless cavity of the accelerator main cylinder is communicated with a rod cavity of the accelerator hydraulic cylinder, and the piston rod of the accelerator hydraulic cylinder is fixedly connected with an accelerator pull rod of an engine;
And an execution port A of the first electromagnetic valve is communicated with a rod cavity of the accelerator hydraulic cylinder, and a wiring end of the first electromagnetic valve and a wiring end of the second electromagnetic valve are both electrically connected with the control mechanism.
The control mechanism comprises a switch and a power supply, and the switch is electrically connected with the power supply.
the control mechanism comprises a button switch and a main controller, the button switch is electrically connected with the main controller, and when the button switch is closed, the main controller controls the wiring end of the first electromagnetic valve and the wiring end of the second electromagnetic valve to be in an electrified state.
an oil return channel is arranged between an oil outlet of the hydraulic pump and the oil tank, and the safety valve is arranged in the oil return channel.
The invention has the advantages that: (1) when the switch of the control mechanism is in an open state or a button switch of the control mechanism is in an open state, the terminal of the first electromagnetic valve and the terminal of the second electromagnetic valve are in a power-off state, the vehicle is in a normal running state at the moment, and when the switch of the control mechanism is in a closed state or the button switch of the control mechanism is in a closed state, the terminal of the first electromagnetic valve and the terminal of the second electromagnetic valve are in a power-on state at the moment, the vehicle is in an operating state at the moment, so that the vehicle can be switched between the normal running state and the operating state; (2) when the vehicle needs to be in an operation state, the terminal of the first electromagnetic valve and the terminal of the second electromagnetic valve are both in an electrified state, the port P of the oil inlet of the first electromagnetic valve is communicated with the port A of the execution port, and the port P1 of the oil inlet of the second electromagnetic valve is communicated with the port A of the execution port, so that a driver only needs to operate the gear selecting valve when starting driving, the port P of the oil inlet of the gear selecting valve is communicated with the port A of the execution port, and the vehicle is hung on a forward gear; meanwhile, pressure oil in the hydraulic pump can also enter a rod cavity of the accelerator hydraulic cylinder, and a piston rod of the accelerator hydraulic cylinder drives an accelerator pull rod of the engine to move so as to fill the oil door; meanwhile, pressure oil in the hydraulic pump can enter a rod cavity of the parking hydraulic cylinder, so that a piston rod of the parking hydraulic cylinder drives a moving plate and a static plate of the parking brake to be separated, the parking brake is released, and the vehicle starts to run. Therefore, only the gear selecting valve is needed to be operated, the forward gear, the oil filling door and the parking brake can be selected, namely, the automatic traveling can be realized during gear selection in the operating state, and the operation is convenient. When the vehicle needs to be stopped, the gear selecting valve is operated only, the execution port A and the execution port B of the gear selecting valve are communicated with the oil tank 1, and the vehicle is hung on an idle gear; meanwhile, the throttle hydraulic cylinder drives a throttle pull rod of the engine to return under the action of a spring by a piston rod, namely, the throttle is not added; meanwhile, under the action of the spring, the pressure oil in the parking hydraulic cylinder 14 returns to the oil tank, so that a piston rod of the parking hydraulic cylinder drives a moving plate and a static plate of the parking brake to be combined, and the vehicle is braked.
The invention is further described below with reference to the accompanying drawings and the examples given.
Drawings
FIG. 1 is a schematic diagram of the control mechanism of the present invention being a switch and power supply;
FIG. 2 is a schematic diagram of the control mechanism of the present invention being a push button switch and a master controller;
FIG. 3 is a schematic diagram of the gear selection, throttle and parking brake of the vehicle of the original type.
Detailed Description
As shown in fig. 1 and 2, the automatic gear-selecting driving system for a vehicle comprises an oil tank 1, a filter 2, a hydraulic pump 3, a safety valve 4, a gear-selecting valve 5, a reverse gear clutch 6, a forward gear clutch 7, an accelerator pedal mechanism 8, an accelerator master cylinder 9, an oil cup 10, an accelerator hydraulic cylinder 11, a parking brake 13, a parking hydraulic cylinder 14 and a parking brake valve 15, wherein the parking brake 13 comprises a rotor 13-1 and a stator 13-2, and the innovation point is that: the electromagnetic valve further comprises a first electromagnetic valve 12, a second electromagnetic valve 16 and a control mechanism 20;
An oil inlet of the hydraulic pump 3 is communicated with the oil tank 1 through the filter 2, an oil outlet of the hydraulic pump 3 is respectively communicated with an oil inlet P port of the gear selecting valve 5 and an oil inlet P2 port of the second electromagnetic valve 16 through two oil channels, an execution port A port of the gear selecting valve 5 is respectively communicated with the forward gear clutch 7, the oil inlet P port of the first electromagnetic valve 12 and an oil inlet P1 port of the second electromagnetic valve 16 through three oil channels, and an execution port B port of the gear selecting valve 5 is communicated with the reverse gear clutch 6;
an execution port A of the second electromagnetic valve 16 is communicated with an oil inlet P of the parking brake valve 15, an execution port A of the parking brake valve 15 is communicated with a rod cavity of the parking hydraulic cylinder 14, and a piston rod 14-1 of the parking hydraulic cylinder 14 is fixedly connected with a moving plate 13-1 of the parking brake 13; the parking cylinder 14 controls the parking brake 13 to operate to brake or release the vehicle.
a piston rod 9-1 of the accelerator main cylinder 9 is fixedly connected with an accelerator pedal 8-1 of an accelerator pedal mechanism 8, the oil cup 10 is communicated with a rodless cavity of the accelerator main cylinder 9, the installation height of the oil cup 10 on a vehicle is higher than that of the accelerator main cylinder 9 on the vehicle, the rodless cavity of the accelerator main cylinder 9 is communicated with a rod cavity of the accelerator hydraulic cylinder 11, and a piston rod of the accelerator hydraulic cylinder 11 is fixedly connected with an accelerator pull rod of an engine;
An execution port A of the first electromagnetic valve 12 is communicated with a rod cavity of the throttle hydraulic cylinder 11, and a terminal of the first electromagnetic valve 12 and a terminal of the second electromagnetic valve 16 are both electrically connected with the control mechanism 20.
The control mechanism 20 includes a switch 21 and a power source 22, and the switch 21 is electrically connected to the power source 22. The control mechanism 20 has a simple structure and low cost, the switch 21 is in a closed state, and the terminals of the first electromagnetic valve 12 and the terminals of the second electromagnetic valve 16 are in an electrified state.
the control mechanism 20 comprises a button switch 23 and a main controller 24, the button switch 23 is electrically connected with the main controller 24, and when the button switch 23 is closed, the main controller 24 controls the terminal of the first electromagnetic valve 12 and the terminal of the second electromagnetic valve 16 to be in an electrified state.
An oil return channel is arranged between the oil outlet of the hydraulic pump 3 and the oil tank 1, and a safety valve 4 is arranged in the oil return channel.
when the vehicle is in a normal driving state, the switch 21 of the control mechanism 20 is in an open state, or the button switch 23 of the control mechanism 20 is in an open state, the terminal of the first electromagnetic valve 12 and the terminal of the second electromagnetic valve 16 are in a power-off state, the port P of the oil inlet of the first electromagnetic valve 12 is not communicated with the port a of the execution port, the port P1 of the oil inlet of the second electromagnetic valve 16 is not communicated with the port a of the execution port, the port P2 of the oil inlet of the second electromagnetic valve 16 is communicated with the port a of the execution port, when a driver starts driving, the selector valve 5 can be operated firstly, the port P of the oil inlet of the selector valve 5 is communicated with the port a of the execution port, pressure oil in the hydraulic pump 3 enters the forward clutch 7, and the vehicle is hung in; then the parking brake valve 15 is operated, so that an oil inlet P port of the parking brake valve 15 is communicated with an execution port A port, and because the oil inlet P2 port of the second electromagnetic valve 16 is communicated with the execution port A port at the moment, pressure oil in the hydraulic pump 3 passes through the second electromagnetic valve 16 and then passes through the parking brake valve 15 to reach a rod cavity of the parking hydraulic cylinder 14, so that a piston rod 14-1 of the parking hydraulic cylinder 14 drives a movable blade 13-1 of the parking brake 13 to be separated from a fixed blade 13-2, and the parking brake is released; then, the accelerator pedal 8-1 of the accelerator pedal mechanism 8 is stepped on, the accelerator pedal 8-1 of the accelerator pedal mechanism 8 drives the piston rod 9-1 of the accelerator main cylinder 9 to move rightwards, so that hydraulic oil in a rodless cavity of the accelerator main cylinder 9 enters a rod cavity of the accelerator hydraulic cylinder 11, the piston rod of the accelerator hydraulic cylinder 11 drives an accelerator pull rod of an engine to move to fill a valve, and the vehicle starts to run. When the vehicle needs to be stopped, an accelerator pedal 8-1 of an accelerator pedal mechanism 8 is loosened, a piston rod 9-1 of an accelerator main cylinder 9 moves leftwards under the action of a spring, at the moment, hydraulic oil in a rodless cavity of the accelerator main cylinder 9 does not enter a rod cavity of an accelerator hydraulic cylinder 11 any more, and the piston rod of the accelerator hydraulic cylinder 11 drives an accelerator pull rod of an engine to return under the action of the spring, namely, an accelerator is not added; then operating the gear selecting valve 5 to ensure that an oil inlet P port of the gear selecting valve 5 is not communicated with an execution port A and an execution port B, and the vehicle is hung in a neutral gear; then the parking brake valve 15 is operated to lead the port A of the execution port of the parking brake valve 15 to be communicated with the oil tank 1, the pressure oil in the rod cavity of the parking hydraulic cylinder 14 returns to the oil tank 1 through the parking brake valve 15, the parking hydraulic cylinder 14 leads the piston rod 14-1 to drive the movable plate 13-1 of the parking brake 13 to be combined with the static plate 13-2 under the action of a spring, the vehicle is in a parking brake state, therefore, as long as the switch 21 of the control mechanism 20 is in the on state, or the push button switch 23 of the control mechanism 20 is in the on state, that is, the port P of the oil inlet of the first electromagnetic valve 12 is not communicated with the port a of the execution port, the port P1 of the oil inlet of the second electromagnetic valve 16 is not communicated with the port a of the execution port, and the port P2 of the oil inlet of the second electromagnetic valve 16 is communicated with the port a of the execution port.
when a vehicle needs to be in an operation state, an oil inlet P port of the parking brake valve 15 is communicated with an execution port A port, a switch 21 of the control mechanism 20 is in a closed state, or a button switch 23 of the control mechanism 20 is in a closed state, a terminal of the first electromagnetic valve 12 and a terminal of the second electromagnetic valve 16 are both in an electrified state, the oil inlet P port of the first electromagnetic valve 12 is communicated with the execution port A port, and an oil inlet P1 port of the second electromagnetic valve 16 is communicated with the execution port A port; meanwhile, pressure oil in the hydraulic pump 3 can also enter a rod cavity of the accelerator hydraulic cylinder 11 through the gear selecting valve 5 and the first electromagnetic valve 12, and a piston rod of the accelerator hydraulic cylinder 11 drives an accelerator pull rod of an engine to move so as to fill an oil valve; meanwhile, pressure oil in the hydraulic pump 3 passes through the gear selecting valve 5 and then passes through the second electromagnetic valve 16 and then passes through the parking brake valve 15 to reach a rod cavity of the parking hydraulic cylinder 14, so that a piston rod 14-1 of the parking hydraulic cylinder 14 drives a movable plate 13-1 and a fixed plate 13-2 of the parking brake 13 to be separated, the parking brake is released, and the vehicle starts to run. Therefore, only the gear selecting valve 5 needs to be operated, the forward gear, the accelerator and the parking brake can be selected, and the automatic driving and the convenient operation can be realized when the gear is selected in the operation state. When the vehicle needs to be stopped, the gear selecting valve 5 is operated only, so that an execution port A and an execution port B of the gear selecting valve 5 are communicated with the oil tank 1, namely, an oil inlet P of the gear selecting valve 5 is not communicated with the execution port A and the execution port B, and the vehicle is hung on an idle gear; meanwhile, pressure oil in the hydraulic pump 3 can not enter a rod cavity of the accelerator hydraulic cylinder 11 through the first electromagnetic valve 12 after passing through the gear selecting valve 5, and the accelerator hydraulic cylinder 11 drives an accelerator pull rod of the engine to return under the action of a spring by a piston rod, namely, an accelerator is not added; meanwhile, under the action of a spring, pressure oil in the parking hydraulic cylinder 14 returns to the oil tank 1 through the parking brake valve 15 and then the second electromagnetic valve 16 to the gear selection valve 5, so that a piston rod 14-1 of the parking hydraulic cylinder 14 drives a movable plate 13-1 of the parking brake 13 to be combined with a fixed plate 13-2, and the vehicle is braked, so that a neutral gear can be hung, the accelerator is not added any more, and the brake can be carried out only by operating the gear selection valve 5, namely, the operation is convenient in an operation state.

Claims (1)

1. The working method of the vehicle gear-selecting automatic driving system comprises an oil tank (1), a filter (2), a hydraulic pump (3), a safety valve (4), a gear-selecting valve (5), a reverse gear clutch (6), a forward gear clutch (7), an accelerator pedal mechanism (8), an accelerator master cylinder (9), an oil cup (10), an accelerator hydraulic cylinder (11), a parking brake (13), a parking hydraulic cylinder (14) and a parking brake valve (15), wherein the parking brake (13) comprises a rotor (13-1) and a stator (13-2), and is characterized in that: the device also comprises a first electromagnetic valve (12), a second electromagnetic valve (16) and a control mechanism (20);
an oil inlet of the hydraulic pump (3) is communicated with the oil tank (1) through the filter (2), an oil outlet of the hydraulic pump (3) is respectively communicated with an oil inlet P port of the gear selecting valve (5) and an oil inlet P2 port of the second electromagnetic valve (16) through two oil channels, an execution port A port of the gear selecting valve (5) is respectively communicated with the forward gear clutch (7), an oil inlet P port of the first electromagnetic valve (12) and an oil inlet P1 port of the second electromagnetic valve (16) through three oil channels, and an execution port B port of the gear selecting valve (5) is communicated with the reverse gear clutch (6);
An execution port A of the second electromagnetic valve (16) is communicated with an oil inlet P of the parking brake valve (15), an execution port A of the parking brake valve (15) is communicated with a rod cavity of the parking hydraulic cylinder (14), and a piston rod (14-1) of the parking hydraulic cylinder (14) is fixedly connected with a rotor (13-1) of the parking brake (13);
A piston rod (9-1) of the accelerator main cylinder (9) is fixedly connected with an accelerator pedal (8-1) of the accelerator pedal mechanism (8), the oil cup (10) is communicated with a rodless cavity of the accelerator main cylinder (9), the mounting height of the oil cup (10) on the vehicle is higher than that of the accelerator main cylinder (9), the rodless cavity of the accelerator main cylinder (9) is communicated with a rod cavity of the accelerator hydraulic cylinder (11), and a piston rod of the accelerator hydraulic cylinder (11) is fixedly connected with an accelerator pull rod of the engine;
An execution port A of the first electromagnetic valve (12) is communicated with a rod cavity of the accelerator hydraulic cylinder (11), and a terminal of the first electromagnetic valve (12) and a terminal of the second electromagnetic valve (16) are both electrically connected with the control mechanism (20);
The control mechanism comprises a button switch and a main controller, the button switch is electrically connected with the main controller, and when the button switch is closed, the main controller controls the wiring terminal of the first electromagnetic valve and the wiring terminal of the second electromagnetic valve to be in an electrified state;
the working method comprises the following steps: when a vehicle needs to be in an operation state, the terminal of the first electromagnetic valve and the terminal of the second electromagnetic valve are in an electrified state, the port P of the oil inlet of the first electromagnetic valve is communicated with the port A of the execution port, the port P1 of the oil inlet of the second electromagnetic valve is communicated with the port A of the execution port, and a driver only needs to operate the gear selecting valve when starting driving, so that the port P of the oil inlet of the gear selecting valve is communicated with the port A of the execution port, and the vehicle is hung on a forward gear; meanwhile, pressure oil in the hydraulic pump can also enter a rod cavity of the accelerator hydraulic cylinder, and a piston rod of the accelerator hydraulic cylinder drives an accelerator pull rod of the engine to move so as to fill the oil door; meanwhile, pressure oil in the hydraulic pump can also enter a rod cavity of the parking hydraulic cylinder, so that a piston rod of the parking hydraulic cylinder drives a moving plate and a static plate of the parking brake to be separated, the parking brake is released, and the vehicle starts to run;
When the vehicle needs to be stopped, the gear selecting valve is operated only, the execution port A and the execution port B of the gear selecting valve are communicated with the oil tank, and the vehicle is hung on an idle gear; meanwhile, the throttle hydraulic cylinder drives a throttle pull rod of the engine to return under the action of a spring by a piston rod, namely, the throttle is not added; meanwhile, under the action of the spring, the pressure oil in the parking hydraulic cylinder returns to the oil tank, so that a piston rod of the parking hydraulic cylinder drives a moving plate and a static plate of the parking brake to be combined, and the vehicle is braked.
CN201810427741.6A 2017-05-09 2017-05-09 Automatic vehicle gear-selecting driving system and working method thereof Expired - Fee Related CN108626387B (en)

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CN201810427714.9A Expired - Fee Related CN108757604B (en) 2017-05-09 2017-05-09 The vehicle block selecting automatic traveling crane system and working method of main controller controls
CN201810428668.4A Withdrawn CN108706011A (en) 2017-05-09 2017-05-09 Vehicle block selecting automatic traveling crane system and working method
CN201810428228.9A Active CN108374891B (en) 2017-05-09 2017-05-09 The vehicle block selecting automatic traveling crane system of main controller controls
CN201810428670.1A Expired - Fee Related CN108591146B (en) 2017-05-09 2017-05-09 vehicle gear-selecting automatic driving system convenient to operate and working method
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CN201810428228.9A Active CN108374891B (en) 2017-05-09 2017-05-09 The vehicle block selecting automatic traveling crane system of main controller controls
CN201810428670.1A Expired - Fee Related CN108591146B (en) 2017-05-09 2017-05-09 vehicle gear-selecting automatic driving system convenient to operate and working method
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CN108757604A (en) 2018-11-06
CN108591146A (en) 2018-09-28
CN108706010A (en) 2018-10-26
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CN107143541B (en) 2018-06-19
CN108757604B (en) 2019-11-12
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CN108591146B (en) 2019-12-13
CN108374891A (en) 2018-08-07

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