CN108468678A - A kind of hydraulic control system of agricultural machinery vehicle body self-balancing - Google Patents
A kind of hydraulic control system of agricultural machinery vehicle body self-balancing Download PDFInfo
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- CN108468678A CN108468678A CN201810490030.3A CN201810490030A CN108468678A CN 108468678 A CN108468678 A CN 108468678A CN 201810490030 A CN201810490030 A CN 201810490030A CN 108468678 A CN108468678 A CN 108468678A
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- oil pipe
- oil
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 238000013016 damping Methods 0.000 claims description 16
- 239000002828 fuel tank Substances 0.000 claims description 8
- 238000005183 dynamical system Methods 0.000 claims 1
- 239000000725 suspension Substances 0.000 abstract description 8
- 230000003028 elevating effect Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000000116 mitigating effect Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 100
- 239000012530 fluid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/24—Fluid damper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The present invention relates to agricultural machinery suspension, more particularly, to a kind of hydraulic control system of agricultural machinery vehicle body self-balancing.A kind of hydraulic control system of agricultural machinery vehicle body self-balancing, the electronic control unit being electrically connected including hydraulic power system, with hydraulic power system, the vehicle hydraulic lift system on fuselage, the vehicle hydraulic lift system is connect by oil pipe and electric wire with the electronic control unit respectively, sensor device is additionally provided on the fuselage, the sensor device is electrically connected with the electronic control unit.The present invention detects each wheel with respect to vehicle body displacement situation, body roll situation by sensor device, and it will detect that parameter passes to electronic control unit with electric signal, electronic control unit requires to send out correspondingly sized electric current to vehicle hydraulic lift system according to reality control, realizes the determination of the direction determination and lifting amount of vehicle body lifting；The present invention realizes outside farm machinery vehicle body elevating mechanism automatic adjusting position, improves vehicle ride comfort, improves shock mitigation system comfort.
Description
Technical field
The present invention relates to agricultural machinery suspension, more particularly, to a kind of hydraulic pressure of agricultural machinery vehicle body self-balancing
Control system.
Background technology
How uneven farm machinery work road conditions are, tortuous, there is the gradient.The suspension that traditional farm machinery uses is mostly
Dependent hangs (leaf spring+passive type damper), and vehicle fluctuates very greatly at work, and vibration is very serious, both affects in this way
The stability of direction of traffic control, also easily causes driver fatigue, especially vehicle body and will appear inclination, be easy to happen and topple,
The short life of vehicle.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of hydraulic pressure controls of agricultural machinery vehicle body self-balancing
System processed.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of liquid of agricultural machinery vehicle body self-balancing
Pressure control system, including hydraulic power system, the electronic control unit being electrically connected with hydraulic power system, the vehicle liquid on fuselage
Suspension, the vehicle hydraulic lift system is pressed to be connect respectively with the electronic control unit by oil pipe and electric wire, the machine
It is additionally provided with sensor device with it, the sensor device is electrically connected with the electronic control unit.
In the technical scheme, the opposite vehicle body displacement situation of each wheel, body roll situation are detected by sensor device,
And will detect that parameter passes to electronic control unit with electric signal, electronic control unit is required according to practical control to vehicle hydraulic suspension system
System sends out correspondingly sized electric current, realizes determination (i.e. hydraulic cylinder moving direction and the position of the direction determination and lifting amount of vehicle body lifting
Shifting amount).The invention is realized outside farm machinery vehicle body elevating mechanism automatic adjusting position, is improved vehicle ride comfort, is improved damping
System comfort.
Preferably, the hydraulic power system includes by oil pipe fuel tank connected in sequence, filter, oil pump, first
Check valve, the oil pump are also associated with motor, and the motor is electrically connected with the electronic control unit, and the hydraulic power system is also wrapped
Include safety valve；Oil pipe connection between the oil outlet of the safety valve and the oil pump and first check valve, the peace
Oil pipe connection between the oil inlet of full valve and the fuel tank and the filter.
Preferably, the hydraulic power system further includes proportional pressure control valve, and the proportional pressure control valve is electrically connected with electronic control unit
It connects, the proportional pressure control valve is also connected by oil pipe with the flowline of the oil pump.
Preferably, the vehicle hydraulic lift system includes after being separately positioned on the near front wheel, off-front wheel, left rear wheel and the right side
Hydraulic lift system on wheel, the hydraulic lift system include the first hydraulic circuit and the second hydraulic circuit.
Preferably, first hydraulic circuit includes 3-position 4-way directly control type proportion directional throttle valve and proportion directional section
The first passage of stream valve goes out by oil pipe the second check valve connected in sequence, the first hydraulic control one-way valve, first throttle valve and singly
Bar hydraulic cylinder；Second hydraulic circuit includes passing through oil pipe connected in sequence second with the second channel of proportion directional throttle valve
Hydraulic control one-way valve, second throttle；The asymmetric servo cylinder includes upper oil cavitie and lower oil cavitie, the asymmetric servo cylinder
Telescopic rod is connect with wheel stand；The upper oil cavitie is connected by elongated oil pipe with the second throttle, and the lower oil cavitie is logical
Elongated oil pipe is crossed with the first throttle valve to be connected；The upper oil cavitie and lower oil cavitie are respectively set with the thin oil pipe junction
There is damping hole；The third channel of the proportion directional throttle valve is connected by oil pipe with the flowline of the oil pump.
Preferably, the first of oil pipe connection is provided between first hydraulic circuit and second hydraulic circuit
Electromagnetic switch and the second electromagnetic switch；The oil inlet of first electromagnetic switch and first hydraulic control one-way valve and described
Oil pipe connection between first throttle valve；The oil inlet of second electromagnetic switch and second hydraulic control one-way valve and described
Oil pipe between second throttle is connected；First electromagnetic switch and second electromagnetic switch respectively by conducting wire with it is described
Electronic control unit is connected.
Preferably, the proportion directional throttle valve both sides are respectively arranged with the first solenoid valve and second solenoid valve, preferably
Ground, first solenoid valve are connected with the electronic control unit with the second solenoid valve by conducting wire respectively.
Preferably, accumulator, the accumulator are provided between first electromagnetic switch and second electromagnetic switch
Oil pipe is connected between first electromagnetic switch and the second electromagnetic switch.
Preferably, first hydraulic circuit further includes counterbalance valve, the oil inlet of the counterbalance valve by oil pipe with it is described
Oil pipe between the first passage of proportion directional throttle valve and the second check valve is connected；The oil outlet of the counterbalance valve passes through oil
Pipe is connected with the oil pipe between second check valve and first electromagnetic switch.
Preferably, the sensor device includes the vehicle body displacement sensor being set on vehicle body and body roll angle position
Displacement sensor, the vehicle body displacement sensor and body roll angular displacement sensor are electrically connected with the electronic control unit respectively.
Compared with prior art, the beneficial effects of the invention are as follows：
Proposed by the present invention independently hanged by the control of electric-liquid system, with adjusting bodywork height and buffer vibrating function
Extension system.By using detection devices such as vehicle body displacement sensor, body roll angular displacement sensors, each wheel is detected with respect to vehicle
Body displacement situation, body roll situation, and will detect that parameter passes to electronic control unit with electric signal, electronic control unit is according to reality
Control requires to send out correspondingly sized electric current to proportion directional throttle valve, realizes the determination of the direction determination and lifting amount of vehicle body lifting
(i.e. hydraulic cylinder moving direction and displacement)；Hydraulic cylinder is controlled by the first electromagnetic switch and the second electromagnetic switch switching
The damping effect and pleasant climate of vehicle body are realized in the connection of upper oil cavitie and lower oil cavitie and accumulator.The present invention is except realization agriculture
With outside mechanical vehicle body elevating mechanism automatic adjusting position, accumulator and damping hole has also been devised, is provided for suspension by accumulator
Non-linear rigidity improves vehicle ride comfort；The damping force generated when flowing through damping hole by fluid realizes Vehicle damper function,
Improve shock mitigation system comfort.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of hydraulic lift system in the present invention.
Specific implementation mode
The present invention is further illustrated With reference to embodiment.Wherein, attached drawing only for illustration,
What is indicated is only schematic diagram rather than pictorial diagram, should not be understood as the limitation to this patent；Reality in order to better illustrate the present invention
Example is applied, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art
For, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；In retouching for the present invention
In stating, it is to be understood that if it is based on attached drawing to have the orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right"
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore position relationship described in attached drawing
Term only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
Embodiment
Fig. 1 to Fig. 2 is a kind of first embodiment of the hydraulic control system of agricultural machinery vehicle body self-balancing, including hydraulic pressure is dynamic
Force system, the electronic control unit being electrically connected with hydraulic power system, the vehicle hydraulic lift system on fuselage, vehicle hydraulic suspension
Extension system is connect by oil pipe and electric wire with electronic control unit respectively, is additionally provided with sensor device on fuselage, sensor device with
Electronic control unit 14 is electrically connected.
Wherein, hydraulic power system includes by oil pipe fuel tank 1 connected in sequence, filter 2, oil pump 3, the first check valve
6, oil pump 3 is also associated with motor 4, and motor 4 is electrically connected with electronic control unit 14, and hydraulic power system further includes safety valve 5；Safety valve
Oil pipe connection between 5 oil outlet and oil pump 3 and the first check valve 6, oil inlet and fuel tank 1 and the filtering of safety valve 5
Oil pipe connection between device 2.
In addition, hydraulic power system further includes proportional pressure control valve 7, proportional pressure control valve 7 is electrically connected with electronic control unit 14, ratio
Overflow valve 7 is also connected by oil pipe with the flowline 15 of oil pump 3.
Wherein, vehicle hydraulic lift system includes being separately positioned on the near front wheel, off-front wheel, left rear wheel and off hind wheel
Hydraulic lift system, hydraulic lift system include the first hydraulic circuit and the second hydraulic circuit.
In addition, the first hydraulic circuit includes 3-position 4-way directly control type proportion directional throttle valve 11 and proportion directional throttle valve
11 first passage 111 by oil pipe the second check valve 30 connected in sequence, the first hydraulic control one-way valve 12, first throttle valve 41 with
And asymmetric servo cylinder 24；Second hydraulic circuit include with the second channel of proportion directional throttle valve 11 112 by oil pipe sequentially
Second hydraulic control one-way valve 13 of connection, second throttle 40；Asymmetric servo cylinder 24 includes upper oil cavitie 241 and lower oil cavitie 242,
The telescopic rod 243 of asymmetric servo cylinder 24 is connect with wheel stand；Upper oil cavitie 241 passes through elongated oil pipe and 40 phase of second throttle
Even, lower oil cavitie 242 is connected by elongated oil pipe with the first throttle valve 41；Upper oil cavitie 241 and lower oil cavitie 242 and thin oil pipe
Junction is respectively arranged with damping hole；The flowline 15 that the third channel 113 of proportion directional throttle valve 11 passes through oil pipe and oil pump 3
It is connected.
Wherein, the first electromagnetic switch 16 of oil pipe connection is provided between the first hydraulic circuit and the second hydraulic circuit
And second electromagnetic switch 17；The oil inlet of first electromagnetic switch 16 and the first hydraulic control one-way valve 12 and first throttle valve 41 it
Between oil pipe connection；Oil between the oil inlet of second electromagnetic switch 17 and the second hydraulic control one-way valve 13 and second throttle 40
Pipe is connected；First electromagnetic switch 12 is connected by conducting wire with the electronic control unit 14 respectively with the second electromagnetic switch 13.
In addition, 11 both sides of proportion directional throttle valve are respectively arranged with the first solenoid valve 18 and second solenoid valve 19, first
Solenoid valve 18 is connected with electronic control unit 14 with second solenoid valve 19 by conducting wire respectively.
Wherein, accumulator 23, accumulator 23 and first are provided between the first electromagnetic switch 12 and the second electromagnetic switch 13
Oil pipe is connected between electromagnetic switch 16 and the second electromagnetic switch 17.
In addition, the first hydraulic circuit further includes counterbalance valve 34, the oil inlet of counterbalance valve 34 passes through oil pipe and proportion directional section
The oil pipe flowed between the first passage and the second check valve 30 of valve 11 is connected；The oil outlet of counterbalance valve 34 passes through oil pipe and second
Oil pipe between check valve 30 and the first electromagnetic switch 12 is connected.
Wherein, sensor device includes the vehicle body displacement sensor being set on vehicle body and body roll angle displacement transducer
Device, vehicle body displacement sensor and body roll angular displacement sensor are electrically connected with electronic control unit 14 respectively.Principle is embodied：
Commutate speed-regulating function：Direct acting type ratio commutation throttle valve (11) and hydraulic cylinder (24) composition, are mounted on agricultural vehicle body
On displacement sensor and angle sensor detection vehicle body apparent surface generate displacement or swing situation, sensor will detect vehicle
Body situation passes to electronic control unit (PLC) with electric signal, and electronic control unit (PLC) is required according to practical control to direct acting type ratio side
Phase induced current is sent out to throttle valve.Ratio commutates throttle valve (11) with commutation and speed-regulating function, ratio commutation throttle valve (11)
When in right position (ya2 conductings), hydraulic cylinder is in propradation；When ratio commutation throttle valve (11) is in left position (ya1 conductings),
Hydraulic cylinder is in decline state.It realizes the lifting direction of adjust automatically vehicle body vehicle body, car body balance, vehicle body rising-falling tone is kept to have suffered
Journey, electromagnetic switch (et1, et2) are closed.
Locking function：It is made of the first hydraulic control one-way valve 12 and the second hydraulic control one-way valve 13, at commutation throttle valve 11
When middle position, the first hydraulic control one-way valve 12 and the second hydraulic control one-way valve 13 are in cut-off state, at this moment by hydraulic cylinder 24, first
Throttle valve 41, second throttle 40, the first electromagnetic switch 16, the second electromagnetic switch 17, accumulator 23 form one have damping,
The damper of buffering, at this moment the first electromagnetic switch 16, the second electromagnetic switch 17 are in the open state.
Equilibrium function：It is made of counterbalance valve 34 and the second check valve 30, when hydraulic cylinder is in decline state, second is unidirectional
Valve 30 ends, and oil return can only be just connected by counterbalance valve 34 since counterbalance valve 34 only reaches predetermined value in arrival end pressure oil, prevents
Only hydraulic cylinder occurs runaway condition when declining, and ensures hydraulic cylinder smooth decreasing.
Displacement sensor and acceleration transducer are used for detecting body vibrations intensity and frequency, when vehicle body is in vibration,
Directly control type proportion directional throttle valve 11 is in middle position to 3-position 4-way, and the first electromagnetic switch 16 and the second electromagnetic switch 17 are connected, liquid
Pressure system plays cushioning effect；Angle sensor is used for detecting vehicle body pendulum torsion situation, when vehicle body is in pendulum torsion situation, the first electromagnetism
Switch 16 and the second electromagnetic switch 17 are closed, and directly control type proportion directional throttle valve 11 is in left position or right position to 3-position 4-way, are realized
Car body balance.
The operation principle of hydraulic control system
(1) resilient suspension
Farm machinery encounters uneven ground in farmland operation process, causes distance between vehicle body and tire rapid
Variation differentiates that asymmetric servo cylinder 24 needs damping by displacement sensor and angle sensor measurement parameter variable quantity, first
Solenoid valve 18 and second solenoid valve 19 are closed, and proportion directional throttle valve 11 is in middle position；First electromagnetic switch 16 and the second electricity
Magnetic switch 17 is opened, asymmetric servo cylinder 24, first throttle valve 41 and second throttle 40, the first electromagnetic switch 16, second
Electromagnetic switch 17, accumulator 23 form a damper with bidirectional damping, pooling feature.
Extension stroke：The oil pressure of descent of piston, 24 lower oil cavitie 242 of asymmetric servo cylinder increases, and the fluid of lower oil cavitie 242 is logical
Cross first throttle valve 41, the first electromagnetic switch 16 enters pressure rise after accumulator 23；24 upper oil cavitie 241 of asymmetric servo cylinder
Oil pressure, which declines, generates vacuum, and under the action of pressure difference, accumulator 23 is entered single by the second electromagnetic switch 17, second throttle 40
24 upper oil cavitie 241 of outlet-rod hydraulic cylinder.Since fluid flows through damping hole and the generation damping of elongated oil pipe of second throttle 40, consumption
A large amount of vibrational energies, play damping effect；The fluid of 24 lower oil cavitie 242 of asymmetric servo cylinder enters accumulator 23, makes accumulator 23
Elastic buffer is played the role of in pressure rise.
Compression travel：The oil pressure of piston stroking upward, 24 upper oil cavitie 241 of asymmetric servo cylinder increases, and the fluid of upper oil cavitie 241 is logical
Cross second throttle 40, the second electromagnetic switch 17 enters pressure rise after accumulator 23；24 lower oil cavitie 242 of asymmetric servo cylinder
Oil pressure, which declines, generates vacuum, and under the action of pressure difference, accumulator 23 is entered single by the first electromagnetic switch 16, first throttle valve 41
The lower oil cavitie 242 of outlet-rod hydraulic cylinder 24.Also due to fluid flows through the damping hole of first throttle valve 41 and elongated oil pipe generates resistance
Buddhist nun consumes a large amount of vibrational energies, plays damping effect；The fluid of the upper oil cavitie 241 of asymmetric servo cylinder 24 enters accumulator 23, makes
23 pressure rise of accumulator, plays the role of elastic buffer.
(2) vehicle body self-balancing
For farm machinery in farmland operation process, encountering inclination has gradient ground, and distance between vehicle body and tire is caused to become
Change, differentiate that vehicle body needs leveling by displacement sensor and angle sensor measurement parameter variable quantity, the first electromagnetic switch 16 with
And second electromagnetic switch 17 close, proportion directional throttle valve 11 is in left position or right position.Asymmetric servo cylinder 24, first throttle valve
41, second throttle 40, the first hydraulic control one-way valve 12, the first hydraulic control one-way valve 13, proportion directional throttle valve 11 form a vehicle
Body elevating mechanism.
(1) vehicle body increases, descent of piston：First solenoid valve 17 is connected, and proportion directional throttle valve 11 is in left position.
Oil inlet：3 → proportion directional throttle valve of oil pump, 11 left position → second, 13 → first throttle valve of hydraulic control one-way valve 41 → mono-
The upper oil cavitie 241 of outlet-rod hydraulic cylinder 24.
Oil return：242 → first throttle valve of lower oil cavitie, 41 → the first 12 → back pressure of hydraulic control one-way valve of asymmetric servo cylinder 24
34 → proportion directional throttle valve of valve, 11 left positions → fuel tank 1.
(2) vehicle body reduces, piston stroking upward：Second solenoid valve 18 is connected, and proportion directional throttle valve 11 is in right position.
Oil inlet：3 → proportion directional throttle valve of oil pump, 11 right position → 30 → the first hydraulic control one-way valve 12 → the of the second check valve
The lower oil cavitie 242 of one 41 → asymmetric servo cylinder of throttle valve 24.
Oil return：241 → second throttle of upper oil cavitie, 40 → the second 13 → ratio of hydraulic control one-way valve of asymmetric servo cylinder 24
11 right position → fuel tank 1 of directional throttle valve.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain.
Claims (10)
1. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing, it is characterised in that：Including hydraulic power system and hydraulic pressure
Electronic control unit, the vehicle hydraulic lift system on fuselage of dynamical system electrical connection, the vehicle hydraulic lift system point
It is not connect with the electronic control unit by oil pipe and electric wire, sensor device, the sensor is additionally provided on the fuselage
Device and the electronic control unit（14）Electrical connection.
2. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 1, it is characterised in that：It is described
Hydraulic power system include pass through oil pipe fuel tank connected in sequence（1）, filter（2）, oil pump（3）, the first check valve（6）,
The oil pump（3）It is also associated with motor（4）, the motor（4）With the electronic control unit（14）Electrical connection, the hydraulic power system
System further includes safety valve（5）；The safety valve（5）Oil outlet and the oil pump（3）And first check valve（6）Between
Oil pipe connection, the safety valve（5）Oil inlet and the fuel tank（1）And the filter（2）Between oil pipe connection.
3. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 2, it is characterised in that：It is described
Hydraulic power system further includes proportional pressure control valve（7）, the proportional pressure control valve（7）With electronic control unit（14）Electrical connection, the ratio
Example overflow valve（7）Also pass through oil pipe and the oil pump（3）Flowline（15）It is connected.
4. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 1, it is characterised in that：It is described
Vehicle hydraulic lift system includes the hydraulic lift system being separately positioned on the near front wheel, off-front wheel, left rear wheel and off hind wheel,
The hydraulic lift system includes the first hydraulic circuit and the second hydraulic circuit.
5. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 4, it is characterised in that：It is described
First hydraulic circuit includes 3-position 4-way directly control type proportion directional throttle valve（11）With proportion directional throttle valve（11）It is first logical
Road is logical（111）Cross oil pipe the second check valve connected in sequence（30）, the first hydraulic control one-way valve（12）, first throttle valve（41）And
Asymmetric servo cylinder（24）；Second hydraulic circuit includes and proportion directional throttle valve（11）Second channel it is logical（112）It crosses
Oil pipe the second hydraulic control one-way valve connected in sequence（13）, second throttle（40）；The asymmetric servo cylinder（24）Including oiling
Chamber（241）And lower oil cavitie（242）, the asymmetric servo cylinder（24）Telescopic rod（243）It is connect with wheel stand；On described
Oil pocket（241）Pass through elongated oil pipe and the second throttle（40）It is connected, the lower oil cavitie（242）Pass through elongated oil pipe and institute
State first throttle valve（41）It is connected；The upper oil cavitie（241）And lower oil cavitie（242）It is respectively set with the thin oil pipe junction
There is damping hole；The proportion directional throttle valve（11）Third channel（113）Pass through oil pipe and the oil pump（3）Flowline
（15）It is connected.
6. a kind of agricultural machinery vehicle body self-balancing hydraulic control system according to claim 5, it is characterised in that：Described
The first electromagnetic switch of oil pipe connection is provided between one hydraulic circuit and second hydraulic circuit（16）And second
Electromagnetic switch（17）；First electromagnetic switch（16）Oil inlet and first hydraulic control one-way valve（12）And described first
Throttle valve（41）Between oil pipe connection；Second electromagnetic switch（17）Oil inlet and second hydraulic control one-way valve（13）
And the second throttle（40）Between oil pipe be connected；First electromagnetic switch（12）With second electromagnetic switch
（13）Pass through conducting wire and the electronic control unit respectively（14）It is connected.
7. a kind of agricultural machinery vehicle body self-balancing hydraulic control system according to claim 6, it is characterised in that：The ratio
Example directional throttle valve（11）Both sides are respectively arranged with the first solenoid valve（18）And second solenoid valve（19）, first solenoid valve
（18）With the second solenoid valve（19）By conducting wire respectively with the electronic control unit（14）It is connected.
8. a kind of agricultural machinery vehicle body self-balancing hydraulic control system according to claim 7, it is characterised in that：Described
One electromagnetic switch（12）With second electromagnetic switch（13）Between be provided with accumulator（23）, the accumulator（23）With it is described
First electromagnetic switch（16）And second electromagnetic switch（17）Between oil pipe be connected.
9. according to a kind of agricultural machinery vehicle body self-balancing hydraulic control system of claim 5 to 8 any one of them, feature exists
In：First hydraulic circuit further includes counterbalance valve（34）, the counterbalance valve（34）Oil inlet pass through oil pipe and the ratio
Directional throttle valve（11）First passage and the second check valve（30）Between oil pipe be connected；The counterbalance valve（34）It is fuel-displaced
Mouth passes through oil pipe and second check valve（30）With first electromagnetic switch（12）Between oil pipe be connected.
10. a kind of agricultural machinery vehicle body self-balancing hydraulic control system according to claim 9, it is characterised in that：It is described
Sensor device includes the vehicle body displacement sensor being set on vehicle body and body roll angular displacement sensor, the vehicle body position
Displacement sensor and body roll angular displacement sensor respectively with the electronic control unit（14）Electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810490030.3A CN108468678A (en) | 2018-05-21 | 2018-05-21 | A kind of hydraulic control system of agricultural machinery vehicle body self-balancing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810490030.3A CN108468678A (en) | 2018-05-21 | 2018-05-21 | A kind of hydraulic control system of agricultural machinery vehicle body self-balancing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108468678A true CN108468678A (en) | 2018-08-31 |
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ID=63260344
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| CN201810490030.3A Pending CN108468678A (en) | 2018-05-21 | 2018-05-21 | A kind of hydraulic control system of agricultural machinery vehicle body self-balancing |
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| CN109041671A (en) * | 2018-09-27 | 2018-12-21 | 温州大学瓯江学院 | A kind of afforestation trolley |
| CN109156122A (en) * | 2018-09-27 | 2019-01-08 | 温州大学瓯江学院 | Afforestation machine with automatic landfill and fertilizing functions |
| CN109895580A (en) * | 2019-03-04 | 2019-06-18 | 岭南师范学院 | A kind of adaptive levelling device in agricultural vehicle vehicle body hillside fields |
| CN110805580A (en) * | 2019-11-05 | 2020-02-18 | 中铁重工有限公司 | Wheel set balanced stress method for multi-point support of wheel-rail walking |
| CN111716958A (en) * | 2020-05-08 | 2020-09-29 | 山东省农业机械科学研究院 | Suspension type steering drive axle, vehicle and control method thereof |
| CN111852965A (en) * | 2020-06-17 | 2020-10-30 | 中国北方车辆研究所 | Pressure-displacement comprehensive control system and method based on rocker arm suspension |
| CN113606199A (en) * | 2021-08-04 | 2021-11-05 | 盾构及掘进技术国家重点实验室 | Rigidity and damp variable hydraulic control system for shield passive hinged oil cylinder |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041671A (en) * | 2018-09-27 | 2018-12-21 | 温州大学瓯江学院 | A kind of afforestation trolley |
| CN109156122A (en) * | 2018-09-27 | 2019-01-08 | 温州大学瓯江学院 | Afforestation machine with automatic landfill and fertilizing functions |
| CN109156122B (en) * | 2018-09-27 | 2020-07-03 | 温州大学瓯江学院 | Afforestation machine with automatic landfill and fertilization function |
| CN109895580A (en) * | 2019-03-04 | 2019-06-18 | 岭南师范学院 | A kind of adaptive levelling device in agricultural vehicle vehicle body hillside fields |
| CN110805580A (en) * | 2019-11-05 | 2020-02-18 | 中铁重工有限公司 | Wheel set balanced stress method for multi-point support of wheel-rail walking |
| CN111716958A (en) * | 2020-05-08 | 2020-09-29 | 山东省农业机械科学研究院 | Suspension type steering drive axle, vehicle and control method thereof |
| CN111852965A (en) * | 2020-06-17 | 2020-10-30 | 中国北方车辆研究所 | Pressure-displacement comprehensive control system and method based on rocker arm suspension |
| CN113606199A (en) * | 2021-08-04 | 2021-11-05 | 盾构及掘进技术国家重点实验室 | Rigidity and damp variable hydraulic control system for shield passive hinged oil cylinder |
| CN113606199B (en) * | 2021-08-04 | 2023-11-21 | 盾构及掘进技术国家重点实验室 | Rigidity and damping variable shield passive articulated cylinder hydraulic control system |
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