CN104843056B - The forward method of hydraulic power steering system, vehicle and hydraulic power steering system - Google Patents
The forward method of hydraulic power steering system, vehicle and hydraulic power steering system Download PDFInfo
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- CN104843056B CN104843056B CN201410323315.XA CN201410323315A CN104843056B CN 104843056 B CN104843056 B CN 104843056B CN 201410323315 A CN201410323315 A CN 201410323315A CN 104843056 B CN104843056 B CN 104843056B
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Abstract
The invention discloses the forward method of a kind of hydraulic power steering system, vehicle and hydraulic power steering system, the hydraulic power steering system includes mechanical steering gear and the power assisting device with the hydraulic steering booster driven by power-assisted oil pump, the power-assisted oil pump can be rotated by power source drive, wherein, the arrangement of clutch that can be engaged or separate (100) is provided between the power-assisted oil pump and the power source.It by above-mentioned technical proposal, between power-assisted oil pump and power source when vehicle is in steering state, can be engaged, and when vehicle is in non-steering state, be separated by arrangement of clutch by arrangement of clutch, thus reduced vehicle oil consumption, save the energy.
Description
Technical field
The present invention relates to vehicular field, in particular it relates to a kind of hydraulic power steering system including the hydraulic power steering
The forward method of the vehicle of system and the hydraulic power steering system.
Background technology
At present, vehicle typically uses hydraulic power steering system when turning to, and hydraulic power steering system is to have driving concurrently
Member's muscle power and steering system of the engine power as steering power source, including mechanical steering gear and hydraulic servo, vehicle
When turning to, driver provides the part energy that steering needs by manipulating mechanical steering gear, and hydraulic servo is provided
Another part energy needed for turning to, with Aided Machine, steering mechanism is turned to, and makes driver's rapid operation in steering.Its
In, hydraulic servo is rotated by driven by engine power-assisted oil pump, and the hydraulic pressure system of working solution force feed is provided by power-assisted oil pump
System.
In existing hydraulic servo, power-assisted oil pump is all direct by forms such as gear, spline or ten word drive keys
Or indirectly with engine Hard link, as long as that is, engine turn, power-assisted oil pump just with turn, still, vehicle is in the process of moving
Be not to need power-assisted steering in real time, therefore, in existing vehicle hydraulic power steering, no matter vehicle idling, straight line
Traveling or turning, power-assisted oil pump certainly will cause the waste of the energy with the mode of engine rotation.
The content of the invention
It is an object of the invention to provide the steering side of a kind of hydraulic power steering system, vehicle and hydraulic power steering system
Method, can reduce vehicle oil consumption, save the energy.
To achieve these goals, one aspect of the present invention provides a kind of hydraulic power steering system, the hydraulic power steering
System includes mechanical steering gear and the power assisting device with the hydraulic steering booster driven by power-assisted oil pump, the power-assisted oil pump energy
It is enough to be rotated by power source drive, the clutch dress that can be engaged or separate is provided between the power-assisted oil pump and the power source
Put.
Preferably, the hydraulic power steering system also includes：
Steering state sensor, the steering state sensor is used for the steering state for detecting vehicle；
Control unit, the control unit is electrically connected with the steering state sensor and the arrangement of clutch respectively, described
Control unit receives the electric signal of the steering state for the expression vehicle for coming from the steering state sensor, according to the electric signal
Judge whether vehicle is in steering state, if vehicle is in steering state, described control unit is sent out to the arrangement of clutch
Send as an envoy to the Engagement Control signal of arrangement of clutch engagement, if vehicle is not in steering state, described control unit is to described
Arrangement of clutch sends the separation control signal for separating the arrangement of clutch.
Preferably, force snesor of the steering state sensor for setting on the steering wheel；Or to detect the direction
The angular transducer of the rotary shaft anglec of rotation of disk.
Preferably, described control unit includes judge module, and the judge module is used to judge the steering state sensing
Whether the value for the electric signal that device is obtained is more than given threshold, if more than the given threshold, vehicle is in steering state, if small
In or equal to the given threshold, then vehicle is not in steering state.
Preferably, the arrangement of clutch includes being used for and a company in the pump shaft of power-assisted oil pump and the drive shaft of power source
The first connector for connecing, for another second connector being connected in the drive shaft of the pump shaft and power source of power-assisted oil pump
And the fastener set between first connector and second connector；
The fastener is connected with first connector and the fastener can be connected relative to described first
Part is moved axially；
The arrangement of clutch also includes the drive mechanism for being arranged at frame, and the fastener can be in the drive mechanism
Effect is lower to be moved axially, so that the fastener is engaged or separated with second connector.
Preferably, the drive mechanism include with the shift forks of the engagement members and for drive the shift fork movement with
The driver for making the fastener engage or separate with second connector.
Preferably, the fastener has outer circumference surface, and annular groove, the shift fork are circumferentially provided with the outer circumference surface
End be plugged in the annular groove.
Preferably, the shift fork is provided with the shift fork block being fastened in the annular groove.
Preferably, the drive mechanism also includes：
Housing, the housing is fixed on the frame, and the housing has the toroidal cavity around the fastener；With
Mobile dish, the mobile dish are connected with the driver and are axially displaceably arranged in the toroidal cavity, institute
State the shift fork for being provided with and extending towards the fastener in mobile dish.
Preferably, the driver includes being arranged in the toroidal cavity and respectively positioned at the mobile dish both sides
Compression spring and telescopic air spring, the compression spring are used to apply axial thrust, the air to the mobile dish
Spring can overcome the axial thrust and control the decrement of the compression spring.
Preferably, the compression spring and the shift fork are multiple, and multiple compression springs and multiple shift forks are along institute
State toroidal cavity circle spacing arrangement.
Preferably, the driver also includes：For the clutch state sensor for the location status for detecting the fastener,
So that the location status of the fastener obtained according to the clutch state sensor controls the movement of the shift fork.
Preferably, it is provided with multiple first engaging tooths, the fastener that be provided with can be with second connector
Second engaging tooth of multiple first engaging tooth engagements.
Preferably, the first arcwall face is provided with each first engaging tooth, is set on each second engaging tooth
There is the second arcwall face, in first engaging tooth and the second engaging tooth engagement process, second engaging tooth
Tooth top is moved along first arcwall face, and the tooth top of first engaging tooth is moved along second arcwall face.
Another aspect of the present invention provides a kind of vehicle, includes hydraulic power steering system as described above, the hydraulic pressure
Power source in power steering system is engine, and steering of the hydraulic system that the power-assisted oil pump drives to vehicle, which is provided, to be helped
Power.
Another aspect of the invention provides a kind of forward method of hydraulic power steering system, the hydraulic power steering system bag
Mechanical steering gear and the power assisting device with the hydraulic steering booster driven by power-assisted oil pump are included, the power-assisted oil pump can be by moving
Power source driving rotation, the forward method includes making the power-assisted oil pump engage with the power source according to the running status of vehicle
Or separation.
Preferably, before the power-assisted oil pump is engaged or is separated with the power source according to the running status of vehicle,
The steering state of vehicle is detected, controls the power-assisted oil pump to be engaged with the power source according to the steering state of the vehicle detected
Or separation.
Preferably, turning for vehicle is detected by detecting the power suffered by steering wheel and/or detecting the anglec of rotation of steering wheel
To state.
By above-mentioned technical proposal, between power-assisted oil pump and power source when vehicle is in steering state, clutch can be passed through
Device is engaged, and when vehicle is in non-steering state, is separated by arrangement of clutch, thus reduce vehicle oil consumption,
Save the energy.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 be one embodiment of the present invention in arrangement of clutch structural representation；
Fig. 2 be in Fig. 1 A-A to cutting structural representation；
Fig. 3 is the structural representation of the second connector of arrangement of clutch in one embodiment of the present invention；
Fig. 4 is the structural representation of the fastener of arrangement of clutch in one embodiment of the present invention；
Fig. 5 is the course changing control flow chart in one embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in detail following connection with figures.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides a kind of hydraulic power steering system, and the hydraulic power steering system includes mechanical steering gear and tool
There is the power assisting device of the hydraulic steering booster driven by power-assisted oil pump, the power-assisted oil pump can be rotated by power source drive, wherein,
The arrangement of clutch 100 that can be engaged or separate is provided between power-assisted oil pump and power source.Specifically such as power-assisted oil pump in Fig. 1
The arrangement of clutch 100 set between the drive shaft 300 of pump shaft 200 and power source, it is of course possible to make power-assisted oil pump be connect with power source
The arrangement of clutch 100 for closing or separating is not limited to the structure shown in Fig. 1, and the arrangement of clutch 100 shown in Fig. 1 is one kind of the invention
Preferred embodiment.
The present invention between power-assisted oil pump and power source by setting arrangement of clutch 100, and vehicle is when turning to, power-assisted oil
Pump can be engaged by arrangement of clutch 100 with power source, by power source drive power-assisted operation of oil pump, and work as normal vehicle operation
When need not turn to, power-assisted oil pump can be separated by arrangement of clutch 100 with power source again, and power-assisted oil pump is stopped, this
Sample, compared with prior art in no matter vehicle idling, straight-line travelling or turn, power-assisted oil pump with the mode of engine rotation,
Vehicle oil consumption can be reduced, the energy is saved.
To make automatically be engaged with being separated according to the steering situation of vehicle between power-assisted oil pump and power source, this
The hydraulic power steering system that invention is provided also includes：Steering state sensor and control unit, wherein, steering state sensing
Device is used for the steering state for detecting vehicle, and control unit is electrically connected with the steering state sensor and arrangement of clutch 100, controlled respectively
Unit processed receives the electric signal of the steering state for the expression vehicle for coming from the steering state sensor, is sentenced according to the electric signal
Whether disconnected vehicle is in steering state, and the clutch of arrangement of clutch 100 is then controlled according to the steering state of vehicle.
Wherein, control unit includes judge module, and the electric signal that steering state sensor is obtained is judged by judge module
Value whether be more than given threshold, if more than the given threshold, vehicle is in steering state, and control unit is to arrangement of clutch
100 send the Engagement Control signal for engaging the arrangement of clutch 100, if less than or equal to the given threshold, vehicle is not located
In steering state, control unit sends the separation control signal for separating the arrangement of clutch 100, clutch dress to arrangement of clutch 100
100 are put to realize automatic engagement according to control signal or separate.
In a specific embodiment, the steering state sensor of the steering state for detecting vehicle can be to be arranged on direction
Force snesor on disk；Or the angular transducer of the rotary shaft anglec of rotation for detection steering wheel.
Preferably, the steering state sensor is sets force snesor on the steering wheel, by sensor arrangement in direction
On plate wheel edge, using vehicle, in straight-line travelling and steering, driver is to the difference of steering wheel amount of force, to judge vehicle
Transport condition.
Specifically, the force snesor on steering wheel receives the active force of driver's effect on the steering wheel, then should
The signal value of active force sends control unit to, and the judge module of control unit judges the size of the force signals value, when this
When force signals value is more than given threshold, illustrate that vehicle is in steering state, control unit control arrangement of clutch 100 is engaged,
When the force signals value is less than given threshold, illustrate that vehicle is in non-steering state, control unit control arrangement of clutch 100
Separation.
Herein it should be noted that vehicle is in steering state is being in the state that will be turned to and vehicle just including vehicle
State in steering；Control unit judges the size of force signals value, is not merely to judge a certain moment active force
Size, in addition to judge the average value size of the active force in the preset time period before and after this moment, by from many aspects
Judge amount of force, can accurately judge the transport condition of vehicle.
By setting force snesor on the steering wheel to perceive and transmit signal, with detecting that the rotary shaft of steering wheel rotates
The angular transducer of angle is compared, can be with the very first time even in the front transfer signal of Vehicular turn.Angular transducer is to pass through
The rotation of steering spindle is perceived to gather signal, and this signal being delivered to steering wheel from driver to cause turning for steering spindle
It is dynamic, the time is needed in this process, and the signal that angular transducer is collected will produce delay.And fill force snesor
On steering wheel rim, when Vehicular turn, driver subconscious can increase carrys out steering wheel rotation to the active force of steering wheel,
Force snesor can collect signal in the very first time during this；Meanwhile, driver can also be as needed in advance to direction
Disk exerts a force, and so power-assisted oil pump can be made to be combined with power source before Turning travel, it is to avoid the problem of signal delay.
Certainly the steering state of detection vehicle can also be rotated by the force snesor and steering wheel set on steering wheel
The mode that the angular transducer set on axle is combined is detected that is, force snesor and angular transducer are transmitted to control unit
Signal, the steering state of vehicle is judged by control unit according to two kinds of signal synthesis.
The arrangement of clutch 100 in the specific embodiment of the invention is described in detail below in conjunction with Fig. 1：
As shown in figure 1, arrangement of clutch 100 includes for the first connector of connection 1 with the pump shaft 200 of power-assisted oil pump, used
Set between the second connector 2 and the first connector 1 and the second connector 2 that the drive shaft 300 with power source is connected
Fastener 3 (can be also connected, the pump of the second connector 2 and power-assisted oil pump using the first connector 1 with the drive shaft 300 of power source
Axle 200 is connected)；Wherein, the connector 1 of fastener 3 and first is connected and fastener 3 can be relative to the axle of the first connector 1
To movement；The arrangement of clutch 100 also includes being arranged at the drive mechanism 4 of frame, and (described frame refers to relative two transmissions herein
Axle fix structure, in the present embodiment, frame be engine housing), fastener 3 can drive mechanism 4 effect
Lower axial movement, so that fastener 3 is engaged or separated with the second connector 2.
When the pump shaft 200 of power-assisted oil pump is engaged with the drive shaft 300 of power source, the driving fastener 3 of drive mechanism 4
Moved to the direction of the second connector 2, fastener 3 is engaged with the second connector 2；When two power transmission shafts need to be separated, drive mechanism 4
Drive fastener 3 to be moved to the direction away from the second connector 2, fastener 3 separates with the second connector 2, by set be somebody's turn to do from
Attach together and put 100, can rapidly realize and be separated with engaging between power-assisted oil pump and power source, it is simple to operate.
In a specific embodiment, connected between the first connector 1 and fastener 3 by feather key, feather key can for spline or
Person is dive key, and fastener 3 can move back and forth along the feather key in axis direction, to engage or divide with the second connector 2
From, and in the moving process of fastener 3, in the presence of feather key, fastener 3 rotates under the drive of the first connector 1 all the time.
Preferably, connected between the first connector 1 and fastener 3 by spline, in such as 1 and Fig. 4, fastener 3 and first
One end that connector 1 is connected is provided with external splines 32, and fastener 3 passes through the end of 32 and first connector of external splines 1 that sets thereon
The internal spline that portion is set is connected, and is connected by spline, the stress between the first connector 1 and fastener 3 is more uniform.
How the structure and fastener 3 that the drive mechanism 4 that driving fastener 3 is moved is specifically described below are in driving machine
Moved under the driving of structure 4.
It will be understood by those skilled in the art that the drive mechanism 4 that fastener 3 can be driven to move has various structures, it is as follows
The structure of described drive mechanism 4 is a kind of preferred embodiment.
As shown in figure 1, drive mechanism 4 includes the shift fork 41 being connected with fastener 3 and the drive moved to shift fork 41
Dynamic device, shift fork 41 is moved under the driving of driver, promotes fastener 3 to move while shift fork 41 is moved.
As shown in Fig. 1 (with reference to Fig. 2 and Fig. 4), fastener 3 has circumferentially to be provided with outer circumference surface, the outer circumference surface
Annular groove 31, the end of shift fork 41 is plugged in the annular groove 31 to promote fastener 3 to move, and annular groove is plugged in shift fork 41
End be provided with the shift fork block 46 being fastened in annular groove 31, shift fork 41 promotes fastener 3 to move by shift fork block 46.
To make the stress equalization of fastener 3, shift fork 41 may be configured as multiple (three being provided with the present embodiment, such as Fig. 2), enclose
Around the arranged for interval of annular groove 31.But the present invention is not limited thereto, shift fork 41 may be arranged as more.
In present embodiment, drive mechanism 4 also includes the housing 43 being fixed in frame, and housing 43, which has, surrounds fastener
3 toroidal cavity, drive mechanism 4 also includes being connected with driver and being arranged on the mobile dish 42 in the toroidal cavity, mobile dish
42 be specially the annular disk with toroidal cavity shape adaptation, can move axially, is provided with mobile dish 42 in toroidal cavity
The shift fork 41 extended towards fastener 3, mobile dish 42 are moved under the driving of driver, so as to drive shift fork 41 to move.
It is arranged to drive the driver that mobile dish 42 are moved to specifically include in the toroidal cavity of housing 43 and difference
Compression spring 44 and telescopic air spring 45 positioned at the both sides of mobile dish 42, compression spring 44 are used to apply mobile dish 42
Axial thrust, air spring 45 can overcome the axial thrust and control the decrement of compression spring 44.Specifically, to air bullet
Spring 45 is inflated, and air spring 45 gradually extends, and compression spring 44 is gradually compressed in the presence of air spring 45, mobile dish 42
It is moved to the left；When air spring 45 is exhausted, air spring 45 shortens, and compression spring 44 gradually extends, mobile dish 42
Moved right under the axial thrust effect of compression spring 44.It is appreciated that the driver for promoting mobile dish 42 to move is not limited
In compression spring 44 and air spring 45 set by the both sides of mobile dish 42, it can also control to move by such as hydraulic pressure or pneumatic mode
Moving plate 42 is moved back and forth.
It is the annular disk being adapted to toroidal cavity because of mobile dish 42, to make annular disk be moved in the case of uniform force,
Compression spring 44 can be set it is multiple, along the toroidal cavity circle spacing arrange.
In present embodiment, driver also includes：For the clutch state sensing for the location status for detecting the fastener 3
Device, so that the location status of the fastener 3 obtained according to the clutch state sensor controls the movement of the shift fork 41.
Preferably, for detect the fastener 3 location status clutch state sensor be housing 43 annular
The linear transducer set in cavity, the linear transducer is used for the length for obtaining the air spring 45, by obtaining air
The length information of spring 45 judges the location status of fastener 3, is connected with air spring 45 and is additionally provided with magnetic valve, and length is passed
Sensor and magnetic valve are electrically connected with above-mentioned control unit, and linear transducer sends out the length information of the air spring 45 of acquisition
Control unit is delivered to, control unit judges the location status of fastener 3 according to the length information, then sent to magnetic valve to sky
The signal that gas spring 45 is inflated or is vented, by the inflation or exhaust of solenoid valve control air spring 45.
In practical application, the detailed process of power source progress clutch of the power-assisted oil pump with driving the power-assisted operation of oil pump is as follows
(with reference to Fig. 1 and Fig. 5)：
When normal vehicle operation need not be turned to, gassy in air spring 45, compression spring 44 is in air spring 45
In the presence of compressed, the connector 2 of fastener 3 and second be in released state, power-assisted oil air pump inoperative.
When Vehicular turn, control unit 101 judges the force signals acquired in the force snesor 102 on steering wheel
Value is more than predetermined threshold value, then control unit 101 sends the signal being vented to air spring 45, magnetic valve 103 to magnetic valve 103
Control air spring 45 is vented, and air spring 45 is gradually shortened, and compression spring 44 extends, work of the mobile dish 42 in compression spring 44
Moved right under, shift fork 41 promotes fastener 3 gradually to be engaged with the second connector 2, meanwhile, linear transducer 104 is obtained in real time
Take the length information of air spring 45 and send the length information to control unit 101, control unit 101 is according to the length information
Judge whether fastener 3 is sufficiently engaged with the second connector 2, shorten to a certain extent in air spring 45, fastener 3 and second
When connector 2 is sufficiently engaged with, power-assisted oil pump is with driving the power source of the power-assisted operation of oil pump to be connected, power-assisted operation of oil pump, now,
Control unit 101 sends the signal for stopping exhaust to magnetic valve 103, and the control air spring 45 of magnetic valve 103 stops exhaust.
When vehicle stops turning to, control unit 101 judges the active force acquired in the force snesor 102 on steering wheel
Signal value is less than or equal to predetermined threshold value, then control unit 101 sends the letter inflated to air spring 45 to magnetic valve 103
Number, the control air spring 45 of magnetic valve 103 is inflated, and compression spring 44 is compressed in the presence of air spring 45, mobile dish 42
Shift fork 41 is driven to be moved to the left, shift fork 41 promotes fastener 3 gradually to be separated with the second connector 2, meanwhile, linear transducer 104
The length information of air spring 45 is obtained in real time and the length information is sent to control unit 101, and control unit 101 is according to the length
Degree information judges whether fastener 3 separates with the second connector 2, and certain length, fastener 3 and second are reached in air spring 45
When connector 2 is separated, power-assisted oil pump is with driving the power source of the power-assisted operation of oil pump to separate, and power-assisted oil pump is stopped, now,
Control unit 101 sends the signal for stopping inflation to magnetic valve 103, and the control air spring 45 of magnetic valve 103 stops inflation.
Herein it should be noted that：When the air supply system of vehicle breaks down, air spring 45 can not be inflated, and at this moment be compressed
Spring 44 extends, and fork 41 can promote fastener 3 move right in the presence of compression spring 44, make the first connector 1 and the
Two connectors 2 are bonded together, so, even if the air supply system of vehicle breaks down or other reasons, the nothing of air spring 45
When method is inflated, the steering that power-assisted oil pump remains able to be connected as vehicle with power source provides power-assisted.
In present embodiment, engaging tooth is respectively arranged with the end face that the connector 2 of fastener 3 and second is bonded with each other, such as
In Fig. 3 and Fig. 4, it is provided with multiple first engaging tooths 21, fastener 3 to be provided with the second connector 2 and multiple is engaged with first
The second engaging tooth 33 that tooth 21 is engaged, fastener 3 and second connector 2 is engaged through the first engaging tooth 21 and the second engaging tooth
33 engagement is realized.
Wherein, it is provided with each first engaging tooth 21 on first arcwall face 211, each second engaging tooth 33 and is provided with
Two arcwall faces 331, in the first engaging tooth 21 and the engagement process of the second engaging tooth 33, the tooth top of the second engaging tooth 33 is along the first arc
Shape face 211 is moved, and the tooth top of the first engaging tooth 21 is moved along the second arcwall face 331, is achieved in the first engaging tooth 21 and second
The engagement of engaging tooth 33, is engaged by arcwall face, and engagement process is steady, smooth, and the noise of generation is small, and in engaging tooth
Upper setting arcwall face, can reduce the stress concentration phenomenon of engagement root portion, so as to avoid engagement root portion from cracking.
The present invention also provides a kind of vehicle, and the vehicle includes hydraulic power steering system as described above, wherein, the liquid
Power source in pressure power steering is engine, and steering of the hydraulic system that power-assisted oil pump drives to vehicle provides power-assisted.
The present invention provides a kind of forward method of hydraulic power steering system again, and the hydraulic power steering system includes machinery
Steering mechanism and the power assisting device with the hydraulic steering booster driven by power-assisted oil pump, the power-assisted oil pump can be driven by power source
Dynamic rotation, the forward method includes making the power-assisted oil pump engage or divide with the power source according to the running status of vehicle
From.
Before the power-assisted oil pump is engaged or is separated with the power source according to the running status of vehicle, vehicle is detected
Steering state, control the power-assisted oil pump to engage or separate with the power source according to the steering state of the vehicle detected.
Wherein, the steering state of vehicle is detected, can be examined by detecting the power suffered by steering wheel and/or detecting the anglec of rotation of steering wheel
The steering state of measuring car.
The forward method for the hydraulic power steering system that the present invention is provided, it preferred embodiment can be using as described above
Hydraulic power steering system turned to, it turns particularly to the description that process is shown in above-mentioned hydraulic power steering system, herein
Repeat no more.
The preferred embodiment of the present invention is described in detail in above connection with figures, still, and the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (14)
1. hydraulic power steering system, the hydraulic power steering system includes mechanical steering gear and with being driven by power-assisted oil pump
Hydraulic steering booster power assisting device, the power-assisted oil pump can rotate by power source drive, it is characterised in that the power-assisted oil
The arrangement of clutch (100) that can be engaged or separate is provided between pump and the power source；
The arrangement of clutch (100) includes being used for and one in the pump shaft (200) of power-assisted oil pump and the drive shaft (300) of power source
The first connector (1) of individual connection, for another in the pump shaft (200) and the drive shaft (300) of power source with power-assisted oil pump
The fastener set between the second connector (2) and first connector (1) and second connector (2) of individual connection
(3)；
The fastener (3) is connected with first connector (1) and the fastener (3) can be relative to described first
Connector (1) is moved axially；
The arrangement of clutch (100) also includes the drive mechanism (4) for being arranged at frame, and the fastener (3) can drive described
Moved axially in the presence of motivation structure (4), so that the fastener (3) is engaged or separated with second connector (2)；
The drive mechanism (4) includes the shift fork (41) coordinated with the fastener (3) and for driving the shift fork (41) to move
Move so that the driver that the fastener (3) engages or separated with second connector (2)；
The drive mechanism (4) also includes：
Housing (43), the housing (43) is fixed on the frame, and the housing (43) has the annular around the fastener (3)
Cavity；With
Mobile dish (42), the mobile dish (42) are connected with the driver and are axially displaceably arranged on the toroidal cavity
In, the shift fork (41) extended towards the fastener (3) is provided with the mobile dish (42)；
The driver includes being arranged in the toroidal cavity and is located at the compression bullet of the mobile dish (42) both sides respectively
Spring (44) and telescopic air spring (45), the compression spring (44), which is used to apply the mobile dish (42), axially to push away
Power, the air spring (45) can overcome the axial thrust and control the decrement of the compression spring (44).
2. hydraulic power steering system according to claim 1, it is characterised in that the hydraulic power steering system is also wrapped
Include：
Steering state sensor, the steering state sensor is used for the steering state for detecting vehicle；
Control unit, the control unit is electrically connected with the steering state sensor and the arrangement of clutch respectively, the control
Unit receives the electric signal of the steering state for the expression vehicle for coming from the steering state sensor, is judged according to the electric signal
Whether vehicle is in steering state, if vehicle is in steering state, described control unit is sent to the arrangement of clutch to be made
The Engagement Control signal of arrangement of clutch engagement, if vehicle is not in steering state, described control unit is to the clutch
Device sends the separation control signal for separating the arrangement of clutch.
3. hydraulic power steering system according to claim 2, it is characterised in that the steering state sensor is setting
Force snesor on the steering wheel；Or be the angular transducer for the rotary shaft anglec of rotation for detecting the steering wheel.
4. hydraulic power steering system according to claim 3, it is characterised in that described control unit includes judging mould
Block, the judge module is used to judge whether the value for the electric signal that the steering state sensor is obtained to be more than given threshold, if
More than the given threshold, then vehicle is in steering state, if being less than or equal to the given threshold, vehicle is not in turning to
State.
5. hydraulic power steering system according to claim 1, it is characterised in that the fastener (3) has excircle
Annular groove (31) is circumferentially provided with face, the outer circumference surface, the end of the shift fork (41) is plugged in the annular groove (31)
In.
6. hydraulic power steering system according to claim 5, it is characterised in that the shift fork (41), which is provided with, to be fastened on
Shift fork block (46) in the annular groove (31).
7. hydraulic power steering system according to claim 1, it is characterised in that the compression spring (44) and described group
It is multiple to pitch (41), and multiple compression springs (44) and multiple shift forks (41) are arranged along the toroidal cavity circle spacing.
8. hydraulic power steering system according to claim 1, it is characterised in that the driver also includes：For examining
The clutch state sensor of the location status of the fastener (3) is surveyed, so as to the institute obtained according to the clutch state sensor
The location status for stating fastener (3) controls the movement of the shift fork (41).
9. hydraulic power steering system according to claim 1, it is characterised in that set on second connector (2)
Have and be provided with what can be engaged with multiple first engaging tooths (21) on multiple first engaging tooths (21), the fastener (3)
Second engaging tooth (33).
10. hydraulic power steering system according to claim 9, it is characterised in that each first engaging tooth (21)
On be provided with the first arcwall face (211), be provided with the second arcwall face (331) on each second engaging tooth (33), to
In first engaging tooth (21) and the second engaging tooth (33) engagement process, the tooth top of second engaging tooth (33) is along institute
The first arcwall face (211) movement is stated, the tooth top of first engaging tooth (21) is mobile along second arcwall face (331).
11. a kind of vehicle, it is characterised in that include the hydraulic power steering system described in claim any one of 1-10, institute
It is engine to state the power source in hydraulic power steering system, and steering of the hydraulic system that the power-assisted oil pump drives to vehicle is carried
For power-assisted.
12. a kind of forward method of hydraulic power steering system, it is characterised in that the hydraulic power steering system is according to right
It is required that the hydraulic power steering system described in any one of 1-10, the forward method is included according to making the running status of vehicle
Power-assisted oil pump is engaged or separated with the power source.
13. the forward method of hydraulic power steering system according to claim 12, it is characterised in that according to vehicle
Running status makes before the power-assisted oil pump engages or separate with the power source, to detect the steering state of vehicle, according to being examined
The steering state of the vehicle of survey controls the power-assisted oil pump to engage or separate with the power source.
14. the forward method of hydraulic power steering system according to claim 13, it is characterised in that by detecting direction
Power suffered by disk and/or detect the anglec of rotation of steering wheel to detect the steering state of vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410323315.XA CN104843056B (en) | 2014-07-08 | 2014-07-08 | The forward method of hydraulic power steering system, vehicle and hydraulic power steering system |
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| CN201410323315.XA CN104843056B (en) | 2014-07-08 | 2014-07-08 | The forward method of hydraulic power steering system, vehicle and hydraulic power steering system |
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| CN104843056A CN104843056A (en) | 2015-08-19 |
| CN104843056B true CN104843056B (en) | 2017-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112874624B (en) * | 2019-11-29 | 2022-07-15 | 比亚迪股份有限公司 | Vehicle steering system and vehicle |
| CN111891214A (en) * | 2020-07-14 | 2020-11-06 | 东风华神汽车有限公司 | Control system and method for rotary pump of cargo vehicle |
| CN114688179B (en) * | 2020-12-30 | 2023-09-05 | 比亚迪股份有限公司 | Clutch device, vehicle steering system and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6079539A (en) * | 1999-02-16 | 2000-06-27 | Dana Corporation | In-line axle disconnect assembly |
| US20030127275A1 (en) * | 2002-01-10 | 2003-07-10 | Rogers Clayton R. | High efficiency automotive hydraulic power steering system |
| CN100547256C (en) * | 2006-03-09 | 2009-10-07 | 刘仁炽 | Clutch mechanism with pooling feature |
| CN201264512Y (en) * | 2008-08-29 | 2009-07-01 | 沈阳华晨金杯汽车有限公司 | Power steering connection structure of hybrid power vehicle |
| CN102009687A (en) * | 2010-11-25 | 2011-04-13 | 奇瑞汽车股份有限公司 | Self-adaptive power-assisted steering system |
| CN102717829A (en) * | 2012-06-18 | 2012-10-10 | 奇瑞汽车股份有限公司 | Energy-saving automotive hydraulic power steering system |
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| CN104843056A (en) | 2015-08-19 |
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