CN208885697U - 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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- CN208885697U CN208885697U CN201820757651.9U CN201820757651U CN208885697U CN 208885697 U CN208885697 U CN 208885697U CN 201820757651 U CN201820757651 U CN 201820757651U CN 208885697 U CN208885697 U CN 208885697U
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Abstract
The utility model 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, including hydraulic power system, the electronic control unit being electrically connected with hydraulic power system, the vehicle hydraulic lift system on fuselage, the vehicle hydraulic lift system passes through oil pipe and electric wire respectively and connect with the electronic control unit, sensor device is additionally provided on the fuselage, the sensor device is electrically connected with the electronic control unit.The utility model detects each wheel by sensor device and is displaced situation, body roll situation with respect to vehicle body, and it will test parameter and electronic control unit passed to electric signal, electronic control unit requires to issue correspondingly sized electric current to vehicle hydraulic lift system according to practical control, and realizes the determination of the direction determination and lifting amount of vehicle body lifting；The utility model is realized outside farm machinery vehicle body elevating mechanism automatic adjusting position, is improved vehicle ride comfort, is improved shock mitigation system comfort.
Description
Technical field
The utility model relates to agricultural machinery suspension, more particularly, to a kind of agricultural machinery vehicle body self-balancing
Hydraulic control system.
Background technique
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 causing driver fatigue, especially vehicle body will appear inclination, is easy to happen and topples,
The service life of vehicle is short.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of liquid of agricultural machinery vehicle body self-balancing
Pressure control system.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of agricultural machinery vehicle body self-balancing
Hydraulic control system, including the hydraulic power system, electronic control unit being electrically connected with hydraulic power system, whole on fuselage
Vehicle hydraulic lift system, the vehicle hydraulic lift system pass through oil pipe and electric wire respectively and connect with the electronic control unit, institute
It states and is additionally provided with sensor device on fuselage, the sensor device is electrically connected with the electronic control unit.
In the technical scheme, each wheel is detected by sensor device and is displaced situation, body roll situation with respect to vehicle body,
And will test parameter and electronic control unit is passed to electric signal, electronic control unit is required according to practical control to vehicle hydraulic suspension system
System issues 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 utility model is realized outside farm machinery vehicle body elevating mechanism automatic adjusting position, is improved vehicle ride comfort, is improved
Shock mitigation system comfort.
Preferably, the hydraulic power system includes passing through the sequentially connected fuel tank of oil pipe, filter, oil pump, first
Check valve, the oil pump are also connected 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 also passes through oil pipe and is connected 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 the sequentially connected second one-way valve of oil pipe, the first hydraulic control one-way valve, first throttle valve and singly
Bar hydraulic cylinder；Second hydraulic circuit includes passing through oil pipe sequentially connected 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 to be connected with the first throttle valve；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 pass through respectively conducting wire with it is described
Electronic control unit is connected.
Preferably, the proportion directional throttle valve two 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 and second one-way valve of proportion directional throttle valve is connected；The oil outlet of the counterbalance valve passes through oil
Pipe is connected with the oil pipe between the second one-way 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 utility model has the beneficial effects that
The utility model proposes by electric-liquid system control, with adjust bodywork height and buffer vibrating function it is only
Vertical suspension.By using detection devices such as vehicle body displacement sensor, body roll angular displacement sensors, each wheel phase is detected
Situation, body roll situation are displaced to vehicle body, and will test parameter and electronic control unit is passed to electric signal, electronic control unit according to
Practical control requires to issue correspondingly sized electric current to proportion directional throttle valve, realizes that the direction of vehicle body lifting is determining and lifting amount
It determines (i.e. hydraulic cylinder moving direction and displacement)；It is controlled by the first electromagnetic switch and the second electromagnetic switch switching hydraulic
The damping effect and pleasant climate of vehicle body are realized in the upper oil cavitie and lower oil cavitie of cylinder and the connection of accumulator.The utility model
In addition to realizing farm machinery vehicle body elevating mechanism automatic adjusting position, accumulator and damping hole has also been devised, is by accumulator
Suspension provides non-linear rigidity, improves vehicle ride comfort；The damping force that generates when flowing through damping hole by oil liquid realizes vehicle
Vibration-damping function improves shock mitigation system comfort.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of hydraulic lift system in the utility model.
Specific embodiment
The utility model is further described With reference to embodiment.Wherein, being given for example only property of attached drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent；In order to which this reality is better described
With novel embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To ability
For field technique personnel, 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 utility model embodiment；It is practical at this
In novel description, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore retouch in attached drawing
The term for stating positional relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood 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 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 passes through oil pipe respectively and electric wire is connect with electronic control unit, is additionally provided with sensor device on fuselage, sensor device with
Electronic control unit 14 is electrically connected.
Wherein, hydraulic power system includes passing through the sequentially connected fuel tank 1 of oil pipe, filter 2, oil pump 3, the first check valve
6, oil pump 3 is also connected 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, the oil inlet and fuel tank 1 of safety valve 5 and filtering
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 passes through the sequentially connected second one-way valve 30 of oil pipe, the first hydraulic control one-way valve 12, first throttle valve 41
And asymmetric servo cylinder 24；Second hydraulic circuit includes suitable by oil pipe with the second channel 112 of proportion directional throttle valve 11
Second hydraulic control one-way valve 13 of secondary 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 the second throttling
Valve 40 is connected, and 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
Damping hole is respectively arranged with thin oil pipe junction；The third channel 113 of proportion directional throttle valve 11 passes through oil pipe and oil pump 3
Flowline 15 be 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；Between the oil inlet of second electromagnetic switch 17 and the second hydraulic control one-way valve 13 and second throttle 40
Oil pipe is connected；First electromagnetic switch 16 is connected by conducting wire with the electronic control unit 14 respectively with the second electromagnetic switch 17.
In addition, 11 two 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 16 and the second electromagnetic switch 17
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 second one-way 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 16 is connected.
Wherein, sensor device includes the vehicle body displacement sensor and body roll angle displacement transducer being set on vehicle body
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 commutates throttle valve (11) and hydraulic cylinder (24) composition, is mounted on agricultural vehicle body
On displacement sensor and angle sensor detection vehicle body apparent surface generate displacement or swing situation, sensor will test vehicle
Body situation is passed 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
Corresponding electric current is issued to throttle valve.Ratio commutates throttle valve (11) with commutation and speed-regulating function, and ratio commutates throttle valve (11)
When in right position (ya2 conducting), hydraulic cylinder is in propradation；When ratio commutation throttle valve (11) is in left position (ya1 conducting),
Hydraulic cylinder is in decline state.It realizes the lifting direction of adjust automatically vehicle body vehicle body, keeps car body balance, vehicle body rising-falling tone is had suffered
Journey, electromagnetic switch (et1, et2) are in close state.
Locking function: being 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 Yu Zhongwei, the first hydraulic control one-way valve 12 and the second hydraulic control one-way valve 13 are in 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: being made of counterbalance valve 34 and second one-way valve 30, and 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 there is runaway condition in decline in hydraulic cylinder, guarantees hydraulic cylinder smooth decreasing.
Displacement sensor and acceleration transducer are used to detect 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 to detect 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 working 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 the damper with bidirectional damping, pooling feature.
Extension stroke: the oil pressure of piston downlink, 24 lower oil cavitie 242 of asymmetric servo cylinder increases, the oil liquid of lower oil cavitie 242
Pass through pressure rise after first throttle valve 41, the first electromagnetic switch 16 entrance accumulator 23；24 upper oil cavitie 241 of asymmetric servo cylinder
Oil pressure decline generate vacuum, under the action of pressure difference, accumulator 23 by the second electromagnetic switch 17, second throttle 40 enter
24 upper oil cavitie 241 of asymmetric servo cylinder.Since oil liquid flows through damping hole and the generation damping of elongated oil pipe of second throttle 40, disappear
A large amount of vibrational energies are consumed, damping effect is played；The oil liquid of 24 lower oil cavitie 242 of asymmetric servo cylinder enters accumulator 23, makes accumulator
23 pressure rises, play the role of elastic buffer.
Compression travel: the oil pressure of piston stroking upward, 24 upper oil cavitie 241 of asymmetric servo cylinder increases, the oil liquid of upper oil cavitie 241
Pass through pressure rise after second throttle 40, the second electromagnetic switch 17 entrance accumulator 23；24 lower oil cavitie 242 of asymmetric servo cylinder
Oil pressure decline generate vacuum, under the action of pressure difference, accumulator 23 by the first electromagnetic switch 16, first throttle valve 41 enter
The lower oil cavitie 242 of asymmetric servo cylinder 24.Also due to oil liquid flows through the damping hole of first throttle valve 41 and elongated oil pipe generates
Damping, consumes a large amount of vibrational energies, plays damping effect；The oil liquid of the upper oil cavitie 241 of asymmetric servo cylinder 24 enters accumulator 23,
Make 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 to level 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, piston downlink: the conducting of the first solenoid valve 17, proportion directional throttle valve 11 are 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: right 30 → the first hydraulic control one-way valve 12 → the of position → second one-way valve of 3 → proportion directional throttle valve of oil pump 11
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
Right position → the fuel tank 1 of directional throttle valve 11.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the scope of protection of the claims of the present invention.
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, with it is hydraulic
Electronic control unit, the vehicle hydraulic lift system on fuselage of dynamical system electrical connection, the vehicle hydraulic lift system point
Not Tong Guo oil pipe and electric wire connect with the electronic control unit, sensor device, the sensor are additionally provided on the fuselage
Device is electrically connected with the electronic control unit (14).
2. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 1, it is characterised in that: described
Hydraulic power system include by the sequentially connected fuel tank of oil pipe (1), filter (2), oil pump (3), the first check valve (6),
The oil pump (3) is also connected with motor (4), and the motor (4) is electrically connected with the electronic control unit (14), the hydraulic power system
System further includes safety valve (5)；Between the oil outlet and the oil pump (3) and first check valve (6) of the safety valve (5)
Oil pipe connection, the oil inlet of the safety valve (5) connect with the oil pipe between the fuel tank (1) and the filter (2).
3. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 2, it is characterised in that: described
Hydraulic power system further includes proportional pressure control valve (7), and the proportional pressure control valve (7) is electrically connected with electronic control unit (14), the ratio
Example overflow valve (7) is also connected by oil pipe with the flowline (15) of the oil pump (3).
4. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 2, it is characterised in that: 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: described
First hydraulic circuit include 3-position 4-way directly control type proportion directional throttle valve (11), with it is the first of proportion directional throttle valve (11) logical
Road (111) by the sequentially connected second one-way valve of oil pipe (30), the first hydraulic control one-way valve (12), first throttle valve (41) and
Asymmetric servo cylinder (24)；Second hydraulic circuit includes passing through with the second channel (112) of proportion directional throttle valve (11)
Sequentially connected second hydraulic control one-way valve (13) of oil pipe, second throttle (40)；The asymmetric servo cylinder (24) includes oiling
The telescopic rod (243) of chamber (241) and lower oil cavitie (242), the asymmetric servo cylinder (24) is connect with wheel stand；On described
Oil pocket (241) is connected by elongated oil pipe with the second throttle (40), and the lower oil cavitie (242) passes through elongated oil pipe and institute
First throttle valve (41) are stated to be connected；The upper oil cavitie (241) and lower oil cavitie (242) are set respectively with the elongated oil pipe junction
It is equipped with damping hole；The third channel (113) of the proportion directional throttle valve (11) passes through the flowline of oil pipe and the oil pump (3)
(15) it is connected.
6. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 5, it is characterised in that: described
The first electromagnetic switch (16) and the of oil pipe connection is provided between first hydraulic circuit and second hydraulic circuit
Two electromagnetic switch (17)；The oil inlet of first electromagnetic switch (16) and first hydraulic control one-way valve (12) and described the
Oil pipe connection between one throttle valve (41)；The oil inlet and second hydraulic control one-way valve of second electromagnetic switch (17)
(13) oil pipe and between the second throttle (40) is connected；First electromagnetic switch (16) is opened with second electromagnetism
(17) are closed to be connected by conducting wire with the electronic control unit (14) respectively.
7. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 6, it is characterised in that: described
Proportion directional throttle valve (11) two sides are respectively arranged with the first solenoid valve (18) and second solenoid valve (19), first electromagnetism
Valve (18) is connected with the electronic control unit (14) with the second solenoid valve (19) by conducting wire respectively.
8. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 7, it is characterised in that: described
It is provided between first electromagnetic switch (16) and second electromagnetic switch (17) accumulator (23), the accumulator (23) and institute
Oil pipe between the first electromagnetic switch (16) and the second electromagnetic switch (17) is stated to be connected.
9. according to a kind of described in any item hydraulic control systems of agricultural machinery vehicle body self-balancing of claim 5 to 8, feature
Be: first hydraulic circuit further includes counterbalance valve (34), and the oil inlet of the counterbalance valve (34) passes through oil pipe and the ratio
Oil pipe between the first passage and second one-way valve (30) of example directional throttle valve (11) is connected；The counterbalance valve (34) goes out
Hydraulic fluid port is connected by the oil pipe between oil pipe and the second one-way valve (30) and first electromagnetic switch (16).
10. a kind of hydraulic control system of agricultural machinery vehicle body self-balancing according to claim 9, it is characterised in that: institute
Stating sensor device includes the vehicle body displacement sensor and body roll angular displacement sensor being set on vehicle body, the vehicle body
Displacement sensor and body roll angular displacement sensor are electrically connected with the electronic control unit (14) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820757651.9U CN208885697U (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 |
|---|---|---|---|
| CN201820757651.9U CN208885697U (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 |
|---|---|
| CN208885697U true CN208885697U (en) | 2019-05-21 |
Family
ID=66504790
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820757651.9U Expired - Fee Related CN208885697U (en) | 2018-05-21 | 2018-05-21 | A kind of hydraulic control system of agricultural machinery vehicle body self-balancing |
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| Country | Link |
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| CN (1) | CN208885697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468678A (en) * | 2018-05-21 | 2018-08-31 | 岭南师范学院 | A kind of hydraulic control system of agricultural machinery vehicle body self-balancing |
| WO2023043616A1 (en) * | 2021-09-20 | 2023-03-23 | Caterpillar Inc. | Suspension system with individual ride height and dampening control |
-
2018
- 2018-05-21 CN CN201820757651.9U patent/CN208885697U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468678A (en) * | 2018-05-21 | 2018-08-31 | 岭南师范学院 | A kind of hydraulic control system of agricultural machinery vehicle body self-balancing |
| WO2023043616A1 (en) * | 2021-09-20 | 2023-03-23 | Caterpillar Inc. | Suspension system with individual ride height and dampening control |
| US11787255B2 (en) | 2021-09-20 | 2023-10-17 | Caterpillar Inc. | Suspension system with individual ride height and dampening control |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20210521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |