CN209112261U - A kind of line traffic control hydraulic steering comprising completely cutting off circuit - Google Patents
A kind of line traffic control hydraulic steering comprising completely cutting off circuit Download PDFInfo
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- CN209112261U CN209112261U CN201821463153.XU CN201821463153U CN209112261U CN 209112261 U CN209112261 U CN 209112261U CN 201821463153 U CN201821463153 U CN 201821463153U CN 209112261 U CN209112261 U CN 209112261U
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- master cylinder
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- 239000000446 fuel Substances 0.000 claims abstract description 106
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000004088 simulation Methods 0.000 claims description 27
- 239000002828 fuel tank Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 147
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model discloses a kind of line traffic control hydraulic steerings comprising isolation circuit, including turning to input unit, control unit, pressure generating unit, wheel steering unit, oil feed line, oil liquid is connected to pressure generating unit two fuel feeding branches of formation and is respectively supplied to left and right wheels by the oil feed line, switch valve is mounted in the coupling part of pressure generating unit and every fuel feeding branch, oil pressure is prevented to be supplied to fuel feeding branch from pressure generating unit when control unit controls when the switch valve is closed, when revealing, described control unit is opened two fuel feeding branches and be connected with each other and shield oil liquid leakage section by control seperating vale guarantees enough steering oil pressure.The utility model is provided with two fuel feeding branches, is respectively supplied to left and right wheels, and when there is no oil liquid leakage, two fuel feeding branches are mutually indepedent；When revealing, two fuel feeding branches are opened by seperating vale and are connected with each other and shield oil liquid leakage section, guarantee enough steering oil pressure.
Description
Technical field
It is specifically a kind of comprising completely cutting off back the utility model relates to a kind of transfer of automobile steering system technical field
The line traffic control hydraulic steering on road.
Background technique
The steering system of automobile is an important component in running car system, the function of steering system be according to
The driving direction of the wish control automobile of driver.The steering system of initial automobile is usually mechanical steering system, is owned
Drive mechanism be all mechanical, and using the physical strength of driver as turn to power source.Due to mechanical steering system structural
It is excessively complicated, and driver's hand-power required when steering is larger, it is higher to the load of driver, so being gradually eliminated.With
Automotive engineering is continuously improved, and power steering system gradually enters into the visual field of people since its handling maneuver is more laborsaving.At present
Widely used in power steering system is electro-hydraulic servo steering system and electric boosting steering system.Above-mentioned the two is just
Required energy only has fraction to be provided by driver when often turning to work, most of to be provided by hydraulic coupling or motor torque,
But above two steering system is due to being booster type steering system, be not able to satisfy it is vehicle intellectualized at present with it is unpiloted
Active steering and automatic parking requirement.
For this purpose, people have started exploration and research to wire-controlled steering system, current automobile steer-by-wire system is usual
It is executed three major parts of assembly and master controller by steering wheel assembly, steering and is formed.Direction is wherein used in steering wheel assembly
Disk rotary angle transmitter and torque sensor, carry out real-time monitoring steering wheel situation, but its torque sensor price for using generally compared with
It is expensive, increase the cost of a whole set of steering system.Due to being no longer mechanically connected between steering wheel and deflecting roller in wire-controlled steering system,
So needing to apply steering wheel road feel simulation torque, driver is fed back to this.Existing wire-controlled steering system is generally logical
It crosses using a road feel motor and generates the simulation torque of surface resistance when simulation turns to, but due to increasing one in its system
Road feel motor increases the cost of system, and motor often works in load condition, can reduce its service life, and wants essence
Really simulation road feel satisfy the need electrification machine performance requirement it is also higher, to sum up realized by road feel motor steering resistence simulate its economy
Property is poor.And current wire-controlled steering system generallys use the bi-motor mode of road feel motor and steering motor combination, mostly
Number bi-motor modes wire-controlled steering system its in power-off failure, exist turn to failure the phenomenon that, this will jeopardize automobile
Driving safety.
Utility model content
Technical problem to be solved in the utility model be overcome in existing steering-by-wire technology due to increase road feel
The problems such as steering system stability is poor when motor bring increased costs, electric-control system power-off failure, and it is being changed to line traffic control
Improve the problem for oil liquid leakage rear steering system stability difference occur after fluid-link steering.
The utility model is that technical solution used by solving its technical problem is:
A kind of line traffic control hydraulic steering comprising completely cutting off circuit, including input unit is turned to, according to the operation of driver
It provides and turns to input；Control unit generates oil pressure according to the steering input control pressure generating unit for turning to input unit；Wheel
Steering unit generates the steering moment of corresponding wheel；And oil feed line, oil pressure will be turned to and be transmitted to corresponding wheel steering list
Member；Oil liquid is connected to pressure generating unit by oil feed line, is formed two fuel feeding branches and is respectively supplied to left and right wheels, in pressure
The coupling part for generating unit and every fuel feeding branch is mounted on switch valve, closes when described control unit controls the switch valve
Prevent to turn to oil pressure when closing from the pressure generating unit supplied to fuel feeding branch, when oil liquid leakage occurs, the control is single
Member is connected with each other by control two fuel feeding branches of several seperating vales unlatchings and shields oil liquid and revealed section and guarantee enough turn
To oil pressure.
Further, the steering input unit includes: steering wheel, rotary angle transmitter, the first roller screw, pressure sensing
Device, road feel simulation master cylinder, the first seperating vale, first switch valve, the first relief valve, threeway ratio adjusting valve, the second seperating vale, the
Two relief valves, second switch valve, fuel tank, the 7th seperating vale, the 8th seperating vale, the steering wheel and steering axis connection, steering shaft
Upper to have rotary angle transmitter, the steering shaft is simulated master cylinder with road feel by the first roller screw and is connect, and coupling part is equipped with pressure
Force snesor, the road feel simulation master cylinder includes I chamber and II chamber, and the first port of the first switch valve is connected with I chamber, another
Port is connected with threeway ratio adjusting valve, the first port and the II chamber phase of road feel simulation master cylinder of the second switch valve
Even, another port is connected with threeway ratio adjusting valve, and first relief valve one end is connect with the I chamber of road feel simulation master cylinder, separately
One end is connect with the first fuel tank, and the II chamber of second relief valve one end and the road feel simulation master cylinder is connect, the other end and the
The connection of one fuel tank, the oiler end of the threeway ratio adjusting valve are connect with fuel tank, the I chamber and II chamber of the road feel simulation master cylinder
It is connected respectively by the first seperating vale, the second seperating vale with the oil supply line of wheel steering unit, then passes through described 7th point
Steering master cylinder connection from valve, the 8th seperating vale and left and right wheels.
Further, the control unit includes electronic control unit, and the electronic control unit is defeated with steering respectively
Enter unit, wheel steering unit by electric wire connection, the electronic control unit is according to steering input control wheel steering unit
Corresponding steering moment and road feel simulation torque are generated, and detects the oil liquid leak case of corresponding oil feed line, if there is oil
The seperating vale being mounted in the coupling part of the pressure generating unit and corresponding oil supply line is closed in liquid leakage, control.
Further, the wheel steering unit includes motor, the second roller screw, pressing creation master cylinder, fuel reserve tank,
Three switch valves, the 4th switch valve, the motor are connect by the second roller screw with pressing creation master cylinder, are constituted pressure and are generated list
Member；The fuel reserve tank is connect with pressure generating unit and is connect simultaneously with oil return pipeline by oil supply line；Pressure generating unit
It is connect by oil supply line with third switch valve, the 4th switch valve, third switch valve, the 4th switch valve are connected separately with the first oil
Pressure sensor, the second oil pressure sensor；The third switch valve separates two articles of branches and is separately connected the 5th switch valve, the 6th switch
Valve, the 5th switch valve, the 6th switch valve connect the first high-speed switch valve, the second high-speed switch valve, institute by oil supply line
State the first high-speed switch valve, the second high-speed switch valve is connected respectively to the I chamber and II chamber of the second steering master cylinder, opened from the third
Closing the fuel feeding route that valve turns to master cylinder to second is the first fuel feeding branch；4th switch valve separates two articles of branches and is separately connected the 7th
Switch valve and the 8th switch valve, the 7th switch valve and the 8th switch valve by oil supply line connect third high-speed switch valve,
4th high-speed switch valve, the third high-speed switch valve, the 4th high-speed switch valve be connected respectively to the first steering master cylinder I chamber and
II chamber turns to master cylinder oil supply line to described first from the 4th switch valve and is known as the second fuel feeding branch；Described first turns to master cylinder
It is connect respectively with third relief valve and the 4th relief valve by oil return pipeline, the third relief valve, the 4th relief valve connect first
It is connected to and the first accumulator and then is connect with the fuel reserve tank, the oil return pipeline for turning to master cylinder to fuel reserve tank from described first is known as the
One oil return branch；The second steering master cylinder is connect respectively by oil return pipeline with the 5th relief valve, the 6th relief valve, and described the
Five relief valves, the 6th relief valve are firstly connected to the second accumulator and then connect with fuel reserve tank, turn to master cylinder to oil storage from second
This branch of case is the second oil return branch；The first fuel feeding branch and the second fuel feeding branch pass through third seperating vale, the 4th point
It is connected from valve, the first oil return branch is connect with the second oil return branch by the 5th seperating vale and the 6th seperating vale；One fuel feeding
Branch connect referred to as circuit, above-mentioned line traffic control hydraulic device with an oil return branch and contains two fuel feeding branches and two oil return branch
Two circuits are contained on road.
Further, four rooms are separated by a first baffle and two second baffles in the fuel reserve tank, wherein two
A room is connect by oil supply line with pressure generating unit as fuel feeding region, other two room is as oil return region and oil return pipe
Line connection.
Further, it is described first turn to master cylinder, second turn to master cylinder piston rod respectively with the turning machine of left and right wheels
Structure connection, controls the corner of left and right wheels, obtains better steering characteristic.
Further, the third seperating vale, the 4th seperating vale, the 5th seperating vale, the 6th seperating vale are let out in no oil liquid
It is controlled off state when leakage, guarantees the independence of each oil supply line and oil return pipeline.
Further, first seperating vale, the second seperating vale, the 7th seperating vale, the 8th seperating vale lose in electronic control unit
The road feel simulation master cylinder for turning to input unit and first is opened and connected when effect turns to master cylinder, the second steering master cylinder.Hydraulic system
It can realize and turn to by driver's hand-power, guarantee the riding stability under power blackout situation；
Further, the third seperating vale, the 4th seperating vale, will be another when oil liquid leakage occurs in one article of fuel feeding branch
Fuel feeding branch connect with the steering master cylinder for oil liquid leakage branch road occur and provides enough oil liquid pressures；5th separation
Valve, the 6th seperating vale by the corresponding oil return branch of another fuel feeding branch and occur when oil liquid leakage occurs in one article of fuel feeding branch
Oil liquid reveals the corresponding oil return branch connection of branch, guarantees that the corresponding compartment oil mass of fuel reserve tank will not be reduced.
Further, first high-speed switch valve, the second high-speed switch valve, third high-speed switch valve, the 4th high speed are opened
It closes valve to be in off state under energization operating condition, is open state in the case where powering off operating condition.
Compared with prior art, the utility model can cancel the road feel motor of traditional line control system, can guarantee electronics control
When unit processed powers off the different steering angle of steering stability, adjustable left and right wheels obtain better steering characteristic and
Can completely isolated composition line traffic control hydraulic steering multiple fuel feeding branches and circuit branch, therefore leaked on some roads
Oil can fully ensure the oil pressure for being in case of emergency able to carry out steering, cost by preventing the oil liquid of each branch from mixing
It is low, securely and reliably.
Detailed description of the invention
Fig. 1 is the structure composition schematic diagram of the line traffic control hydraulic device.
Fig. 2 is the operating status schematic diagram of the line traffic control hydraulic device in normal work.
Fig. 3 is operating status schematic diagram of the line traffic control hydraulic device when oil liquid leakage occurs in a fuel feeding branch；
Fig. 4 is operating status schematic diagram of the line traffic control hydraulic device in the case where power blackout situation occurs in electronic control unit；
Attached drawing mark is bright: 1- steering wheel, 2- rotary angle transmitter, the first roller screw of 3-, 4- pressure sensor, 5- road feel mould
Quasi- master cylinder, the first seperating vale of 6-, 7- first switch valve, the first relief valve of 8-, 9- threeway proportioning valve, the second seperating vale of 10-, 11-
Second switch valve, the second relief valve of 12-, 13- fuel tank, 14- electronic control unit, 15- fuel reserve tank, 16- motor, 17- second are rolled
Axial filament thick stick, 18- pressing creation master cylinder, the first accumulator of 19-, the second accumulator of 20-, the first oil pressure sensor of 21-, 22- second
Oil pressure sensor, 23- third switch valve, the 4th switch valve of 24-, the 5th switch valve of 25-, the 6th switch valve of 26-, 27- the 7th are opened
Pass valve, the 8th switch valve of 28-, 29- third seperating vale, the 4th seperating vale of 30-, the 5th seperating vale of 31-, the 6th seperating vale of 32-,
33- third relief valve, the 4th relief valve of 34-, the first high-speed switch valve of 35-, the second high-speed switch valve of 36-, 37- third high speed are opened
Pass valve, the 4th high-speed switch valve of 38-, the steering master cylinder of 39- first, 40- wheel, the 5th relief valve of 41-, the 6th relief valve of 42-,
43- second turns to master cylinder, the 7th seperating vale of 44-, the 8th seperating vale of 45-, 46- first baffle, 47- second baffle.
Specific embodiment
The utility model in order to better understand, with reference to the accompanying drawing further specifically to the embodiments of the present invention
It is bright.
As shown in Figure 1, a kind of line traffic control hydraulic steering comprising completely cutting off circuit, including input unit is turned to, according to driving
The operation for the person of sailing, which provides, turns to input；Control unit is produced according to the steering input control pressure generating unit for turning to input unit
Oil generation pressure；Wheel steering unit generates the steering moment of corresponding wheel；And oil feed line, oil pressure will be turned to and be transmitted to accordingly
Wheel steering unit；Oil liquid is connected to pressure generating unit by oil feed line, is formed two fuel feeding branches and is respectively supplied to a left side
Right wheel is mounted on switch valve in the coupling part of pressure generating unit and every fuel feeding branch, when described control unit control
It makes and prevents to turn to oil pressure when the switch valve is closed from the pressure generating unit supplied to fuel feeding branch, when generation oil liquid leakage
When, described control unit by control several seperating vales open two fuel feeding branches is connected with each other and shields oil liquid leakage section and
Guarantee enough steering oil pressure.
The steering input unit includes: steering wheel 1, rotary angle transmitter 2, the first roller screw 3, pressure sensor 4, road
Sense simulation master cylinder 5, the first seperating vale 6, first switch valve 7, the first relief valve 8, threeway ratio adjusting valve 9, the second seperating vale 10,
Second relief valve 11, second switch valve 12, fuel tank 13, the 7th seperating vale 44, the 8th seperating vale 45, the steering wheel 1 and steering
Axis connection, has rotary angle transmitter 2 in steering shaft, and the steering shaft is simulated master cylinder 5 with road feel by the first roller screw 3 and connected
It connecing, coupling part is equipped with pressure sensor 4, and road feel simulation master cylinder 5 includes I chamber and II chamber, and the of the first switch valve 7
Single port is connected with I chamber, and another port is connected with threeway ratio adjusting valve 9, the first port of the second switch valve 12 and institute
State road feel simulation master cylinder 5 II chamber be connected, another port is connected with threeway ratio adjusting valve 9,8 one end of the first relief valve with it is described
Road feel simulates the I chamber connection of master cylinder 5, and the other end is connect with the first fuel tank 13, described second relief valve, 11 one end and the road feel
The II chamber connection of master cylinder 5 is simulated, the other end is connect with the first fuel tank 13, feeds back to driver for establishing simulation road feel；It is described
The oiler end of threeway ratio adjusting valve 9 is connect with fuel tank 13, and the I chamber and II chamber of road feel simulation master cylinder 5 pass through the respectively
One seperating vale 6, the second seperating vale 10 are connected with the oil supply line of wheel steering unit, then by the 7th seperating vale 44,
8th seperating vale 45 is connect with the steering master cylinder of left and right wheels.In the present embodiment, first roller screw 3 is by steering wheel 1
Rotary motion becomes translational motion, and electronic control unit 14 calculates driver turn side according to the pressure signal of pressure sensor 4
Cost has been saved instead of the torque sensor in traditional wire-controlled steering system steering shaft to the torque of disk.
The control unit includes electronic control unit, the electronic control unit 14 respectively with turn to input unit,
Wheel steering unit is connected by electric wire, and the electronic control unit 14 generates phase according to input control wheel steering unit is turned to
Steering moment and road feel the simulation torque answered, and the oil liquid leak case of corresponding oil feed line is detected, if there is oil liquid leakage,
The seperating vale being mounted in the coupling part of the pressure generating unit and corresponding oil supply line is closed in control.
The wheel steering unit includes motor 16, the second roller screw 17, pressing creation master cylinder 18, fuel reserve tank 15,
Three switch valves 23, the 4th switch valve 24, the motor 16 are connect by the second roller screw 17 with pressing creation master cylinder 18, are constituted
Pressure generating unit；The fuel reserve tank 15 is connect with pressure generating unit and is connect simultaneously with oil return pipeline by oil supply line；
Pressure generating unit is connect by oil supply line with third switch valve 23, the 4th switch valve 24, and third switch valve the 23, the 4th switchs
Valve 24 is connected separately with the first oil pressure sensor 21, the second oil pressure sensor 22；The third switch valve 23 separates two branches
It is separately connected the 5th switch valve 25, the 6th switch valve 26, the 5th switch valve 25, the 6th switch valve 26 are connected by oil supply line
Connect the first high-speed switch valve 35, the second high-speed switch valve 36, first high-speed switch valve 35, the second high-speed switch valve 36 difference
It is connected to the I chamber and II chamber of the second steering master cylinder 43, the fuel feeding route of master cylinder 43 is turned to from the third switch valve 23 to the second
For the first fuel feeding branch；4th switch valve 24 separates two articles of branches and is separately connected the 7th switch valve 27 and the 8th switch valve 28, institute
It states the 7th switch valve 27 and third high-speed switch valve 37, the 4th high-speed switch valve is connected by oil supply line with the 8th switch valve 28
38, the third high-speed switch valve 37, the 4th high-speed switch valve 38 are connected respectively to the I chamber and II chamber of the first steering master cylinder 39,
39 oil supply line of master cylinder, which is turned to, to described first from the 4th switch valve 24 is known as the second fuel feeding branch；Described first turns to master cylinder 39
It is connect respectively with third relief valve 33 and the 4th relief valve 34 by oil return pipeline, the third relief valve 33, the 4th relief valve
Then 34 are firstly connected to the first accumulator 19 connect with the fuel reserve tank 15, turn to master cylinder 39 to fuel reserve tank 15 from described first
Oil return pipeline be known as the first oil return branch；It is described second turn to master cylinder 43 by oil return pipeline respectively with the 5th relief valve 41,
The connection of 6th relief valve 42, the 5th relief valve 41, the 6th relief valve 42 be firstly connected to the second accumulator 20 then with storage
Fuel tank 15 connect, from second turns to master cylinder 43 to this branch of fuel reserve tank 15 be the second oil return branch；The first fuel feeding branch
It is connect with the second fuel feeding branch by third seperating vale 29, the 4th seperating vale 30, the first oil return branch and the second oil return branch are logical
Cross the 5th seperating vale 31 and the connection of the 6th seperating vale 32；One fuel feeding branch connect referred to as circuit with an oil return branch, on
It states line traffic control hydraulic device and contains two fuel feeding branches and two oil return branches, that is, contain two circuits.
4 rooms, two of them room are separated by a first baffle 46 and two second baffles 47 in the fuel reserve tank 15
It is connect by oil supply line with pressure generating unit as fuel feeding region, other two room connects as oil return region and oil return pipeline
It connects.Fuel reserve tank 15 is divided into four regions, respectively corresponds two fuel feeding branches and two oil return branches；The first fuel feeding branch
Oil liquid in road pressurizes from fuel reserve tank 15 by motor 16, the second roller screw 17, pressing creation master cylinder 18, flows through third switch
Then valve 23 and the first oil pressure sensor 21 are divided into two articles of branches and pass through the 5th switch valve 25, the 6th switch valve 26 company respectively
It is connected to the first high-speed switch valve 35, the second high-speed switch valve 36, master cylinder 43 is turned to second respectively and steering oil pressure is provided；Second supplies
Oil liquid in oily branch pressurizes from fuel reserve tank 15 by motor 16, the second roller screw 17, pressing creation master cylinder 18, flows through the 4th
Then switch valve 24 and the second oil pressure sensor 22 are divided into two articles of branches and pass through the 7th switch valve 27, the 8th switch valve respectively
28 are connected to third high-speed switch valve 37, the 4th high-speed switch valve 38, turn to master cylinder 39 to first respectively and provide steering oil pressure；The
One oil return branch is that the first oil liquid for turning to master cylinder 39 passes through third relief valve 33, the 4th relief valve 34, flows back into fuel reserve tank 15；
Second oil return branch is that the second oil liquid for turning to master cylinder 43 passes through the 5th relief valve 41, the 6th relief valve 42, flows back into fuel reserve tank
15。
Described first piston rod for turning to the steering master cylinder 43 of master cylinder 39, second connects with the steering mechanism of left and right wheels respectively
It connects, controls the corner of left and right wheels, obtain better steering characteristic.
The third seperating vale 29, the 4th seperating vale 30, the 5th seperating vale 31, the 6th seperating vale 32 are normally close valve, described
Third seperating vale 29, the 4th seperating vale 30, the 5th seperating vale 31, the 6th seperating vale 32 are controlled as closing in no oil liquid leakage
Closed state guarantees the independence of each oil supply line and oil return pipeline, and when there is oil liquid leakage, the electronic control unit 14 is controlled
Third seperating vale 29 processed, the 4th seperating vale 30, the 5th seperating vale 31, the 6th seperating vale 32 are opened, and the first, second fuel feeding branch is connected
Road.
First seperating vale 6, the second seperating vale 10, the 7th seperating vale 44,45 normally open valve of the 8th seperating vale, described first
Seperating vale 6, the second seperating vale 10, the 7th seperating vale 44, the 8th seperating vale 45 are opened in 14 power-off failure of electronic control unit
And it connects the road feel simulation master cylinder 5 for turning to input unit and first and turns to the steering master cylinder 43 of master cylinder 39, second.Hydraulic system can
It realizes and turns to by driver's hand-power, guarantee the riding stability under power blackout situation；First high-speed switch valve 35, second
High-speed switch valve 36, third high-speed switch valve 37, the 4th high-speed switch valve 38 are in off state under energization operating condition, in power-off work
It is open state under condition.
The third seperating vale 29, the 4th seperating vale 30 are when oil liquid leakage occurs in one article of fuel feeding branch, by another fuel feeding
Branch connect with the steering master cylinder for oil liquid leakage branch road occur and provides enough oil liquid pressures；5th seperating vale 31,
By the corresponding oil return branch of another fuel feeding branch and there is oil when oil liquid leakage occurs in one article of fuel feeding branch in 6th seperating vale 32
Liquid reveals the corresponding oil return branch connection of branch, guarantees that the corresponding compartment oil mass of fuel reserve tank will not be reduced.
As shown in Fig. 2, a kind of line traffic control hydraulic steering comprising completely cutting off circuit of the present embodiment is in normal conditions
The course of work are as follows:
When driver turn steering wheel 1, rotary angle transmitter 2 records steering wheel angle, and the first roller screw 3 pushes road feel
It simulates that the piston in master cylinder 5 is mobile to generate oil pressure, pressure is recorded by pressure sensor 4, one of them is logical for the threeway proportioning valve 9
Oil liquid is drawn from fuel tank 13 in road, passes through the respectively according to the oil pressure that 14 control instruction of electronic control unit establishes two other access
One switch valve 7, second switch valve 12 are supplied in the I chamber and II chamber of road feel simulation master cylinder 5, and extra oil pressure in I chamber is from second
Relief valve 11 returns to fuel tank 13, and the extra oil pressure of II chamber returns to fuel tank 13 from the first relief valve 8, is established by I, II chamber oil pressure anti-
Feeder sense is to driver.
The first seperating vale 6, the second seperating vale 10 are closed at this time, and road feel simulates master cylinder 5 and first and turns to 39, second turns of master cylinder
It is disconnected to master cylinder 43.
The electronic control unit 14 controls motor 16 according to the pressure signal of pressure sensor 4 and rotates, and drives second turn
Axial filament thick stick 17 is mobile, so that the piston motion in pressing creation master cylinder 18 is pushed, respectively to the first fuel feeding branch, the second fuel feeding branch
Oil pressure is established on road.Third switch valve 23, the 4th switch valve 24 are in closed state at this time, independent two Room in the fuel reserve tank 15
Oil liquid flows through the first oil pressure sensor 21, the second oil pressure sensor 22 by third switch valve 23, the 4th switch valve 24；It is described
The oil liquid that first oil pressure sensor 21 comes out is divided into two articles of branches and passes through the 5th switch valve 25, the 6th switch valve 26 respectively,
The 5th switch valve 25, the 6th switch valve 26 are closed state at this time, flow to 35, second high speed of the first high-speed switch valve
It is connect respectively with I, II chamber of the second steering master cylinder 43 of left wheel after switch valve 36, passes through first high-speed switch valve
35, the high speed opening and closing of the second high-speed switch valve 36 enables the second steering master cylinder 43 to generate quickly generation foot in running car
Enough steering moments turn to master cylinder 43 this fuel feeding branch to described second from the third switch valve 23 and are known as the first fuel feeding branch
Road；The oil liquid that second oil pressure sensor 22 comes out, which is divided into two articles of branches and passes through the 7th switch valve the 27, the 8th respectively, to be opened
Valve 28 is closed, the 7th switch valve 27, the 8th switch valve 28 are closed state at this time, and oil liquid flows to the third high-speed switch valve
37, it is connect respectively with I, II chamber of the first steering master cylinder 39 of left wheel after the 4th high-speed switch valve 38, it is high by the described 5th
The high speed opening and closing of fast switch valve 37, the 6th high-speed switch valve 38 makes the first steering master cylinder 39 quickly generate enough steering moments,
This article of fuel feeding branch of master cylinder 39, which is turned to, from the 4th switch valve 24 to the first is known as the second fuel feeding branch；The third relief valve
33,34 one end of the 4th relief valve connect with I, II chamber of the first steering master cylinder 39 respectively, the other end by the first accumulator 19 and
Fuel reserve tank 15 connect, help second steering master cylinder 43 shed oil pressure, below will from first turn to master cylinder 39 to fuel reserve tank 15 this
Oil return pipeline is known as the first oil return branch；5th relief valve 41,42 one end of the 6th relief valve turn to master cylinder with second respectively
43 II, I chamber connection, the other end are connect by the second accumulator 20 with fuel reserve tank 15, are helped the first steering master cylinder 39 to unload and are deoiled
Pressure, turning to master cylinder from second below, this oil return pipeline is known as the second oil return branch to fuel reserve tank.
Third seperating vale 29, the 4th seperating vale 30, the 5th seperating vale 31, the 6th seperating vale 32 are in an off state at this time,
Two fuel feeding branches and oil return branch are in state of isolation.The 7th seperating vale 44, the 8th seperating vale 45 are in off state at this time.
Fig. 3 is the fuel feeding route of the line traffic control hydraulic steering when oil liquid leakage occurs in a certain fuel feeding branch.
After oil liquid leakage occurs in a certain fuel feeding branch, the line traffic control hydraulic steering workflow is as follows:
When the electronic control unit 14 detects that 21 fuel injection pressure signal of the first oil pressure sensor is too small, third switch is closed
Valve 23, opening pressure generate the connection of master cylinder 18 and the first fuel feeding branch；Then, the electronic control unit 14 is closed first time
The 5th relief valve 41 and the 6th relief valve 42 of oily branch road reduce fuel reserve tank corresponding with this fuel feeding branch and oil return branch
The further leakage of compartment oil liquid in 15 is accomplished to shield oil leak section.
After shielding draining section, in order to guarantee that the second steering master cylinder 43 can have enough steering oil pressure, the electronic control
Unit 14 opens third seperating vale 29, the 4th seperating vale 30, the 5th seperating vale 31, the 6th seperating vale 32, and connection first, second supplies
Oily branch, the second fuel feeding branch give the first steering master cylinder 39 and second to turn to the offer steering oil pressure of master cylinder 43 simultaneously；Together
When the first oil return branch and the second oil return branch also connected together because seperating vale is opened, the second oil return branch gives the simultaneously
One steering master cylinder 39 and the second steering master cylinder 43 shed oil pressure.
At this point, the 7th seperating vale 44, the 8th seperating vale 45 are in off state.
Fig. 4 is fuel feeding route of the line traffic control hydraulic steering in electronic control unit power-off failure.
When 14 power-off failure of electronic control unit, the first seperating vale 6, the power-off of the second seperating vale 10 are opened and are connected
Road feel simulates master cylinder 5 and the first, second fuel feeding branch, and first seperating vale 6, the second seperating vale 10 are all normally open valve；Then
7th seperating vale 44, the power-off of the 8th seperating vale 45 are opened, and the 7th seperating vale 44, the 8th seperating vale 45 are normally open valve, oil liquid stream
Through the first high-speed switch valve 35, the second high-speed switch valve 36, third high-speed switch valve 37, the 4th high-speed switch valve 38, this four
High-speed switch valve is in off state under energization operating condition, is open state in the case where powering off operating condition, then oil liquid flows into left and right wheels
Steering master cylinder establish turn to oil pressure；The steering master cylinder that road feel simulates master cylinder 5 and left and right wheels is directly connected by oil supply line
It connects.
Steering oil pressure can be established to guarantee to turn to master cylinder in the power-off state, the 5th switch valve 25, the 6th switch valve 26, the
Seven switch valves 27, the 8th switch valve 28 are normally close valve, are closed under off-position；Third seperating vale 29, the 4th seperating vale the 30, the 5th
Seperating vale 31, the 6th seperating vale 32 are normally close valve, are closed under off-position；Third relief valve 33, the 4th relief valve the 34, the 5th are let out
Pressure valve 41, the 6th relief valve 42 are normally close valve, are closed under off-position；First switch valve 7, second switch valve 12 are normally close valve,
First relief valve 8, the second relief valve 12 are normally close valve, and when power-off closes, the connection of isolation road feel simulation master cylinder 5 and fuel tank 13.
The above embodiments of the present invention is merely examples for clearly illustrating the present invention, and is not
Limitations of the embodiments of the present invention.For those of ordinary skill in the art, on above explained basis
On can also make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.
Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in this reality
Within novel scope of protection of the claims.
Claims (10)
1. a kind of line traffic control hydraulic steering comprising completely cutting off circuit, including input unit is turned to, it is mentioned according to the operation of driver
It is inputted for turning to；Control unit generates oil pressure according to the steering input control pressure generating unit for turning to input unit；Wheel turns
To unit, the steering moment of corresponding wheel is generated；And oil feed line, oil pressure will be turned to and be transmitted to corresponding wheel steering list
Member；Oil liquid is connected to pressure generating unit by oil feed line, is formed two fuel feeding branches and is respectively supplied to left and right wheels, in pressure
The coupling part for generating unit and every fuel feeding branch is mounted on switch valve, closes when described control unit controls the switch valve
Prevent to turn to oil pressure when closing from the pressure generating unit supplied to fuel feeding branch, when oil liquid leakage occurs, the control is single
Member is connected with each other by control two fuel feeding branches of several seperating vales unlatchings and shields oil liquid and revealed section and guarantee enough turn
To oil pressure.
2. the line traffic control hydraulic steering according to claim 1 comprising isolation circuit, it is characterised in that: the steering is defeated
Entering unit includes: steering wheel (1), rotary angle transmitter (2), the first roller screw (3), pressure sensor (4), road feel simulation master cylinder
(5), the first seperating vale (6), first switch valve (7), the first relief valve (8), threeway ratio adjusting valve (9), the second seperating vale
(10), the second relief valve (11), second switch valve (12), fuel tank (13), the 7th seperating vale (44), the 8th seperating vale (45), institute
It states steering wheel (1) and turns to axis connection, there are rotary angle transmitter (2) in steering shaft, the steering shaft passes through the first roller screw
(3) it is connect with road feel simulation master cylinder (5), coupling part is equipped with pressure sensor (4), and road feel simulation master cylinder (5) includes I chamber
It is connected with the first port of II chamber, the first switch valve (7) with I chamber, another port is connected with threeway ratio adjusting valve (9),
The first port of the second switch valve (12) is connected with the II chamber of road feel simulation master cylinder (5), another port and threeway ratio
Example regulating valve (9) is connected, and the first relief valve (8) one end is connect with the I chamber of road feel simulation master cylinder (5), the other end and first
Fuel tank (13) connection, the II chamber that described second relief valve (11) one end and the road feel simulate master cylinder (5) are connect, the other end and the
One fuel tank (13) connection, the oiler end of the threeway ratio adjusting valve (9) are connect with fuel tank (13), and the road feel simulates master cylinder
(5) I chamber and II chamber passes through the oil supply line phase of the first seperating vale (6), the second seperating vale (10) and wheel steering unit respectively
Connection, then connect by the 7th seperating vale (44), the 8th seperating vale (45) with the steering master cylinder of left and right wheels.
3. the line traffic control hydraulic steering according to claim 1 comprising isolation circuit, it is characterised in that: the control
Unit includes electronic control unit (14), the electronic control unit (14) respectively with turn to input unit, wheel steering unit
It is connected by electric wire, the electronic control unit (14) generates corresponding steering force according to input control wheel steering unit is turned to
Square and road feel simulate torque, and detect the oil liquid leak case of corresponding oil feed line, if there is oil liquid leakage, peace is closed in control
Seperating vale in the coupling part of the pressure generating unit and corresponding oil supply line.
4. the line traffic control hydraulic steering according to claim 1 comprising isolation circuit, it is characterised in that: the wheel turns
It include motor (16), the second roller screw (17), pressing creation master cylinder (18), fuel reserve tank (15), third switch valve to unit
(23), the 4th switch valve (24), the motor (16) are connect by the second roller screw (17) with pressing creation master cylinder (18), structure
At pressure generating unit；The fuel reserve tank (15) is connect with pressure generating unit by oil supply line and is connected simultaneously with oil return pipeline
It connects；Pressure generating unit is connect by oil supply line with third switch valve (23), the 4th switch valve (24), third switch valve
(23), the 4th switch valve (24) is connected separately with the first oil pressure sensor (21), the second oil pressure sensor (22)；The third is opened
It closes valve (23) and separates two articles of branches and be separately connected the 5th switch valve (25), the 6th switch valve (26), the 5th switch valve (25),
6th switch valve (26) by oil supply line connect the first high-speed switch valve (35), the second high-speed switch valve (36), described first
High-speed switch valve (35), the second high-speed switch valve (36) are connected respectively to the I chamber and II chamber of the second steering master cylinder (43), from described
The fuel feeding route that third switch valve (23) turns to master cylinder (43) to second is the first fuel feeding branch；4th switch valve (24) separates two
Article branch is separately connected the 7th switch valve (27) and the 8th switch valve (28), the 7th switch valve (27) and the 8th switch valve
(28) third high-speed switch valve (37), the 4th high-speed switch valve (38), the third high-speed switch valve are connected by oil supply line
(37), the 4th high-speed switch valve (38) is connected respectively to the I chamber and II chamber of the first steering master cylinder (39), from the 4th switch valve (24)
It is known as the second fuel feeding branch to described first steering master cylinder (39) oil supply line；Described first, which turns to master cylinder (39), passes through oil return pipe
Line is connect with third relief valve (33) and the 4th relief valve (34) respectively, the third relief valve (33), the 4th relief valve (34)
It is firstly connected to the first accumulator (19) then to connect with the fuel reserve tank (15), turns to master cylinder (39) to oil storage from described first
The oil return pipeline of case (15) is known as the first oil return branch；Described second turns to master cylinder (43) is let out with the 5th respectively by oil return pipeline
Pressure valve (41), the connection of the 6th relief valve (42), the 5th relief valve (41), the 6th relief valve (42) are firstly connected to the second storage
Can device (20) then connect with fuel reserve tank (15), from second turn to master cylinder (43) to fuel reserve tank (15) this branch be the second oil return
Branch；The first fuel feeding branch is connect with the second fuel feeding branch by third seperating vale (29), the 4th seperating vale (30), and first
Oil return branch is connect with the second oil return branch by the 5th seperating vale (31) and the 6th seperating vale (32).
5. the line traffic control hydraulic steering according to claim 4 comprising isolation circuit, it is characterised in that: the fuel reserve tank
(15) four rooms are separated by a first baffle (46) and two second baffles (47) in, two of them room is as fuel feeding region
It is connect by oil supply line with pressure generating unit, other two room is connect as oil return region with oil return pipeline.
6. the line traffic control hydraulic steering according to claim 4 comprising isolation circuit, it is characterised in that: described first turn
It is connect respectively with the steering mechanism of left and right wheels to master cylinder (39), the second piston rod for turning to master cylinder (43), controls left and right wheels
Corner.
7. the line traffic control hydraulic steering according to claim 4 comprising isolation circuit, it is characterised in that: the third point
It is controlled as from valve (29), the 4th seperating vale (30), the 5th seperating vale (31), the 6th seperating vale (32) in no oil liquid leakage
Closed state.
8. the line traffic control hydraulic steering comprising isolation circuit according to claim 2, it is characterised in that: described
First seperating vale (6), the second seperating vale (10), the 7th seperating vale (44), the 8th seperating vale (45) are opened when electronic control unit fails
It opens and connects road feel simulation master cylinder (5) for turning to input unit and first and turn to master cylinder (39), the second steering master cylinder (43).
9. the line traffic control hydraulic steering comprising isolation circuit according to claim 4, it is characterised in that: described
Third seperating vale (29), the 4th seperating vale (30) by another fuel feeding branch and go out when oil liquid leakage occurs in one article of fuel feeding branch
The steering master cylinder of existing oil liquid leakage branch road connects and provides enough oil liquid pressures；5th seperating vale (31), the 6th point
From valve (32) when oil liquid leakage occurs in a fuel feeding branch, the corresponding oil return branch of another fuel feeding branch is let out with there is oil liquid
Reveal the corresponding oil return branch connection of branch.
10. the line traffic control hydraulic steering comprising isolation circuit according to claim 4, it is characterised in that: institute
State the first high-speed switch valve (35), the second high-speed switch valve (36), third high-speed switch valve (37), the 4th high-speed switch valve (38)
It is in off state under energization operating condition, is open state in the case where powering off operating condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821463153.XU CN209112261U (en) | 2018-09-07 | 2018-09-07 | A kind of line traffic control hydraulic steering comprising completely cutting off circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821463153.XU CN209112261U (en) | 2018-09-07 | 2018-09-07 | A kind of line traffic control hydraulic steering comprising completely cutting off circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209112261U true CN209112261U (en) | 2019-07-16 |
Family
ID=67198102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821463153.XU Expired - Fee Related CN209112261U (en) | 2018-09-07 | 2018-09-07 | A kind of line traffic control hydraulic steering comprising completely cutting off circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209112261U (en) |
-
2018
- 2018-09-07 CN CN201821463153.XU patent/CN209112261U/en not_active Expired - Fee Related
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Granted publication date: 20190716 |