CN103879257B - Suspension valve, hydro pneumatic suspension control system and engineering truck - Google Patents
Suspension valve, hydro pneumatic suspension control system and engineering truck Download PDFInfo
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- CN103879257B CN103879257B CN201410151307.1A CN201410151307A CN103879257B CN 103879257 B CN103879257 B CN 103879257B CN 201410151307 A CN201410151307 A CN 201410151307A CN 103879257 B CN103879257 B CN 103879257B
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- 239000000725 suspension Substances 0.000 title claims abstract description 229
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 210000004247 hand Anatomy 0.000 claims 1
- 238000004146 energy storage Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 79
- 230000000694 effects Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The present invention relates to a kind of suspension valve, hydro pneumatic suspension control system and engineering truck, hydro pneumatic suspension control system is used for hydro pneumatic suspension is controlled, hydro pneumatic suspension includes two suspension oil cylinders being arranged symmetrically in vehicle bridge both sides and two accumulators, hydro pneumatic suspension control system includes two suspension valves being arranged symmetrically in vehicle bridge both sides, the liquid chambers of accumulator are connected with the rod chamber fluid of the rodless cavity of the suspension oil cylinder of this side and the suspension oil cylinder of offside respectively by the suspension valve of this side, it is in the fluid passage between the liquid chambers of the accumulator of this side of rigid state lower suspension valve closure and the rod chamber of the suspension oil cylinder of offside in hydro pneumatic suspension.When the hydro pneumatic suspension of the present invention is in rigid state, by the fluid passage between the liquid chambers of suspension valve closure accumulator and the rod chamber of suspension oil cylinder, eliminate in existing hydro pneumatic suspension and cause vehicle bridge progressively downward trend because energy storage pressure is not enough or a certain vehicle bridge is overweight, stop vehicle bridge from declining, improve the safety of whole machine.
Description
Technical field
The present invention relates to engineering machinery field, more particularly, to a kind of suspension valve, hydro pneumatic suspension control system and engineering truck.
Background technology
Suspension is the vehicle frame of automobile（Including monocoque body）With vehicle bridge（Also referred to as axletree）Between all power transmission connections dress
The general name put, road surface is passed to vehicle frame or car to passing to vehicle frame, buffering after effectively the processing of vehicle tyre by uneven road surface
The impulsive force of body, and the vibration thus causing that decays, to ensure the traveling that automobile can smooth out.
Hydro pneumatic suspension refers to fluid transmission pressure, uses noble gases（It is usually nitrogen）One kind as elastic fluid is hanged
Frame, flexible member adopts accumulator, the damping element then throttle orifice within suspension oil cylinder, check valve etc..Using hydro pneumatic suspension
The full Terrain Cranes can solve mobile crane in translation and pass through that property is relatively low, the problems such as be not suitable with complicated territorial environment, make
Vehicle can adapt to more complicated severe ground；Hydro pneumatic suspension has variation rigidity characteristic, can improve vehicle ride performance
And safety.
As shown in figure 1, the structural representation for hydro pneumatic suspension in existing hydro pneumatic suspension control system.In FIG, oil gas
Suspension is mainly made up of two suspension oil cylinder a2 and four guide push rod a1, and suspension oil cylinder a2 is symmetrical and becomes with vertical guide
One angle is in tilted layout between wheel and vehicle frame, and its upper and lower ends is connected to vehicle frame and axletree using articulated manner（Turn
It is axletree stub to bridge）On, axial force can only be born, act primarily as and bear vertical load and roll stable effect.Four guiding push away
Power bar a1 divides upper and lower two-layer to be staggeredly arranged, and general two distance rod a1 in upper strata have a horizontal sextant angle with longitudinal direction of car center,
Two distance rod a1 of lower floor and longitudinal direction of car center parallel, four distance rod a1 two ends are also attached using articulated manner, main
Act the effect bearing vehicle traction and brake force and wheel alignment.
Also it is connected with left and right two accumulator a3 and suspension valve a4 respectively in one end of the two suspension oil cylinder a2 in left and right, specifically
Type of attachment hydraulic principle schematic diagram shown in Figure 2.In fig. 2, hydro pneumatic suspension can be by the operation of suspension valve a4 Lai real
The existing rigid state of hydro pneumatic suspension and the switching of elastic stage, and the elevating function of hydro pneumatic suspension.
When gas source control system does not provide pressure signal, pneumatic operated valve Y1 and Y2 in suspension valve a4 is in left work
Position, corresponding oil circuit is cut-off state, and the big chamber of suspension oil cylinder a2 is disconnected with the connection of accumulator a3, and now suspension is in rigid shape
State；When gas source control system provides pressure signal, pneumatic operated valve Y1 and Y2 is in right working position, side suspension oil cylinder a2's
Large and small oil pocket is communicated with each other with little, the big oil pocket of opposite side suspension oil cylinder a2 respectively, and is connected with corresponding accumulator a3, hangs
Nitrogen in frame oil cylinder a2 retractable compression accumulator a3, the effect played buffering and absorb vibrational energy, now whole
Individual suspension fork mechanism is in elastic stage.When hydraulic pump a5 is in running order, gas source control system provides pressure signal, pneumatic operated valve
Y1 and Y2 is in right working position.When electromagnetic valve Y3, the Y4 in suspension valve a4 obtains electric, then suspension oil cylinder a2 is due to size cavity pressure
Differ from and stretch out, now vehicle frame raises；When electromagnetic valve Y5, the Y6 in suspension valve a4 obtains electric, then suspension oil cylinder a2 is in vehicle frame gravity
Effect is lower to retract, and now vehicle frame reduces.
There are several shortcomings in existing hydro pneumatic suspension device：
1st, get on the bus operation when vehicle bridge easily fall down：During due to crane job, Vertical Cylinders are needed to support ground, now
Chassis is lifted, and vehicle bridge is liftoff, and the liftoff of suspension oil cylinder to be realized by accumulator pressurize, if energy storage pressure deficiency or certain car
Bridge is heavier, and this hanging oil cylinder can fall down, and vehicle bridge also can and then have a declining tendency, and affects the safety of whole machine.
2nd, accumulator maintenance or replacing are inconvenient：Because accumulator is directly connected to suspension oil cylinder loculus, accumulator is easily remaining
Pressure, maintenance or replacing accumulator need to release pressure just permissible, the easy maloperation of layman, cause danger.
3rd, big to hanging valve impact during car load fall：When particularly band is got on the bus, whole machine is heavier, and suspension step-down operation is changed to electromagnetism
Big to valve impact, affect the suspension valve life-span.
4th, than relatively hazardous during trailer：Engine in situ or electrically break down, vehicle cannot rely on the power of itself to travel
When, need special trailer to draw, now, suspension oil cylinder middle position works, and chassis center of gravity has certain height, and trailer has certain
Risk.
Content of the invention
The purpose of the present invention is to propose to a kind of suspension valve, hydro pneumatic suspension control system and engineering truck, it can be avoided that because storing
Can device insufficient pressure or vehicle bridge weight larger and cause the problem fallen under hanging oil cylinder, stop vehicle bridge from declining, lift the peace of whole machine
Quan Xing.
For achieving the above object, the invention provides a kind of hydro pneumatic suspension control system, for controlling to hydro pneumatic suspension
System, described hydro pneumatic suspension includes two suspension oil cylinders being arranged symmetrically in vehicle bridge both sides and two accumulators, described hydro pneumatic suspension
Control system includes two suspension valves being arranged symmetrically in vehicle bridge both sides, and wherein, the liquid chambers of described accumulator pass through this side
Suspension valve is connected with the rod chamber fluid of the rodless cavity of the suspension oil cylinder of this side and the suspension oil cylinder of offside respectively, in described oil gas
Suspension is in the rod chamber of the suspension oil cylinder of the liquid chambers of accumulator of described this side of suspension valve closure and offside under rigid state
Between fluid passage.
Further, described suspension valve includes the first electromagnetic valve and the second electromagnetic valve, and described first electromagnetic valve is to described outstanding
Fluid passage between the liquid chambers of accumulator of this side of frame valve and the rod chamber of suspension oil cylinder of offside realizes open and close controlling, institute
State the stream between the liquid chambers of the accumulator to described this side of suspension valve for second electromagnetic valve and the rodless cavity of suspension oil cylinder of this side
Open and close controlling realized by body path.
Further, described suspension valve also includes the first overflow valve, realizes the liquid of the accumulator to described this side of suspension valve
The overflow protection of body cavity.
Further, described suspension valve also includes the first ball valve, is capable of the accumulator of this side of suspension valve described in manual release
Liquid chambers pressure.
Further, described hydro pneumatic suspension control system also includes the lifting control being arranged in oil-feed oil circuit and oil return circuit
Valve processed, realizes the extension and contraction control to two suspension oil cylinders corresponding to each vehicle bridge.
Further, described lift controil valve includes the 3rd electromagnetic valve, the 4th electromagnetic valve, the 5th electromagnetic valve and the 6th electromagnetism
Valve, described 3rd electromagnetic valve and the 5th electromagnetic valve having to oil-feed oil circuit and two suspension oil cylinders corresponding to each vehicle bridge respectively
Open and close controlling is realized in fluid passage between rod cavity, described 4th electromagnetic valve and the 6th electromagnetic valve respectively to oil return circuit and each
Open and close controlling is realized in the fluid passage between the rodless cavity of two suspension oil cylinders corresponding to vehicle bridge.
Further, described lift controil valve also includes the second overflow valve and the 3rd overflow valve, described second overflow valve and
3rd overflow valve be separately positioned on the rodless cavity of two suspension oil cylinders corresponding to each vehicle bridge each with described 4th electromagnetic valve
With the 6th on the fluid passage between electromagnetic valve.
Further, described lift controil valve also includes the second ball valve and the 3rd ball valve, being capable of each vehicle bridge of manual release
The pressure of the corresponding rodless cavity of two suspension oil cylinders.
For achieving the above object, present invention also offers a kind of engineering truck, including vehicle frame, at least two vehicle bridge and every
Hydro pneumatic suspension corresponding to individual vehicle bridge, wherein, also includes aforesaid hydro pneumatic suspension control system.
For achieving the above object, present invention also offers suspension valve, including the first electromagnetic valve and the second electromagnetic valve, institute
State the stream between the liquid chambers of the accumulator to described this side of suspension valve for first electromagnetic valve and the rod chamber of suspension oil cylinder of offside
Open and close controlling realized by body path, the liquid chambers of the accumulator to described this side of suspension valve for described second electromagnetic valve and the suspension of this side
Fluid passage between the rodless cavity of oil cylinder realizes open and close controlling.
Further, described suspension valve also includes the first overflow valve, realizes the liquid of the accumulator to described this side of suspension valve
The overflow protection of body cavity.
Further, described suspension valve also includes the first ball valve, is capable of the accumulator of this side of suspension valve described in manual release
Liquid chambers pressure.
Based on technique scheme, the accumulator in the hydro pneumatic suspension of the present invention needs by suspension valve and suspension oil cylinder
Oil pocket is connected, and under hydro pneumatic suspension is in rigid state, the liquid chambers of suspension valve closure accumulator are had with suspension oil cylinder
Fluid passage between rod cavity, makes not to be joined directly together between accumulator and suspension oil cylinder, and is isolated by suspension valve, thus eliminating
Cause vehicle bridge progressively downward trend because energy storage pressure is not enough or a certain vehicle bridge is overweight in existing hydro pneumatic suspension, stop car
Bridge declines, and improves the safety of whole machine.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of hydro pneumatic suspension in existing hydro pneumatic suspension control system.
Fig. 2 is the hydraulic principle schematic diagram of existing hydro pneumatic suspension control system.
Fig. 3 is the hydraulic principle schematic diagram of an embodiment of hydro pneumatic suspension control system of the present invention.
Fig. 4 is the hydraulic principle schematic diagram of another embodiment of hydro pneumatic suspension control system of the present invention.
Specific embodiment
Below by drawings and Examples, technical scheme is described in further detail.
As shown in figure 3, the hydraulic principle schematic diagram of the embodiment for hydro pneumatic suspension control system of the present invention.In this enforcement
In example, hydro pneumatic suspension control system is used for hydro pneumatic suspension is controlled, and hydro pneumatic suspension includes being arranged symmetrically in vehicle bridge both sides
3,4 and two accumulators 4,5 of two suspension oil cylinders, concrete form refers to the hydro pneumatic suspension shown in Fig. 1.Hydro pneumatic suspension controls system
System includes the two suspension valves 6,7 being arranged symmetrically in vehicle bridge both sides.The liquid chambers of accumulator 4 are by the suspension valve 6 of this side respectively
It is connected with the rod chamber fluid of the rodless cavity of the suspension oil cylinder 2 of this side and the suspension oil cylinder 3 of offside, the liquid chambers of accumulator 5 are led to
Cross the suspension valve 7 of this side rod chamber fluid phase respectively with the rodless cavity of the suspension oil cylinder 3 of this side and the suspension oil cylinder 2 of offside
Even.When hydro pneumatic suspension is in rigid state, suspension valve 6,7 closes off the liquid chambers of accumulator 4,5 of this side and offside
Fluid passage between the rod chamber of suspension oil cylinder 3,2.
In the hydro pneumatic suspension control system of the present embodiment, can be provided dynamic for two suspension oil cylinders 2,3 by hydraulic pump 1
Power, using accumulator 4,5 for providing damping effect in vehicle travel process, 6,7, suspension valve is used for joining with other ingredients
Close and to realize the various mode of operations of hydro pneumatic suspension.Open the liquid chambers of accumulator 4,5 of this side and offside in suspension valve 6,7
During fluid passage between the rod chamber of suspension oil cylinder 3,2, the rodless cavity of suspension oil cylinder 2 is mutual with the rod chamber of suspension oil cylinder 3
Link up, and communicate with the liquid chambers of the accumulator 4 of this side, and the rod chamber of suspension oil cylinder 2 is mutual with the rodless cavity of suspension oil cylinder 3
Link up, and communicate with the liquid chambers of the accumulator 5 of offside.So, suspension oil cylinder 2,3 retractables compression accumulator 4,5
Interior nitrogen, the effect played buffering and absorb vibrational energy, whole suspension fork mechanism had both been in elastic stage.And work as suspension valve 6,
During fluid passage between the 7 closing liquid chambers of accumulator 4,5 of this side and the rod chamber of suspension oil cylinder 3,2 of offside, suspension
The rod chamber of oil cylinder 2,3 and rodless cavity are in shutting state, and now hydro pneumatic suspension is in rigid state, and rigid state is non-row
Sail state.
From the suspension valve of existing hydro pneumatic suspension control system realize that function is different, the suspension valve in the present embodiment can
Play the effect of the rod chamber of closing suspension oil cylinder under rigid state, rather than the rod chamber to suspension oil cylinder is come by accumulator and protect
Pressure, to realize, therefore avoids to fall under the hanging oil cylinder leading to because energy storage pressure is not enough or certain vehicle bridge is heavier, car
Bridge also can and then have the problem of decline, therefore improves the safety of whole machine.
Suspension valve can be made up of multiple electromagnetic valves, such as the suspension valve arrangement shown in Fig. 3, and suspension valve 6 includes first
The liquid chambers of electromagnetic valve Y1 and the second electromagnetic valve Y2, the first electromagnetic valve Y1 accumulator 4 to this side of suspension valve 6 and the suspension of offside
Fluid passage between the rod chamber of oil cylinder 3 realizes open and close controlling, and the second electromagnetic valve Y2 is to the accumulator 4 of this side of suspension valve 6
Fluid passage between the rodless cavity of suspension oil cylinder 2 of liquid chambers and this side realizes open and close controlling.And suspension valve 7 includes the first electricity
The liquid chambers of magnet valve Y5 and the second electromagnetic valve Y6, the first electromagnetic valve Y5 accumulator 5 to this side of suspension valve 7 are oily with the suspension of offside
Fluid passage between the rod chamber of cylinder 2 realizes open and close controlling, the liquid of the accumulator 5 to this side of suspension valve 7 for the second electromagnetic valve Y6
Fluid passage between the rodless cavity of suspension oil cylinder 3 of body cavity and this side realizes open and close controlling.
For suspension valve arrangement, suspension valve 6,7 can further include first overflow valve Y3, Y7, realizes to outstanding
Frame valve 6, the overflow protection of the liquid chambers of accumulator 4,5 of 7 this side, it is to avoid the liquid cavity pressure of accumulator 4,5 is excessive.Except this it
Outward, can also increase by first ball valve Y4, Y8 in suspension valve 6,7 further, operator can be made using first ball valve Y4, Y8
Manual release suspension valve 6, the pressure of the liquid chambers of accumulator 4,5 of 7 this side.First ball valve closed mode during normal use, and
When operator need accumulator to be safeguarded or changes, operator can directly turn on ball valve, makes accumulator liquid chambers
Hydraulic oil all flows back to fuel tank so that liquid pressure energy quick release is fallen in accumulator, can trust and take off accumulator.
The hydro pneumatic suspension control system of the present invention is except carrying out the rigid state of hydro pneumatic suspension and cutting of elastic stage
Change, the elevating function of hydro pneumatic suspension can also be realized further.As shown in figure 4, it is another for hydro pneumatic suspension control system of the present invention
The hydraulic principle schematic diagram of one embodiment.Compared with a upper embodiment, the present embodiment is in the oil-feed oil of hydro pneumatic suspension control system
It is provided with lift controil valve 9 in road and oil return circuit further, realize stretching to two suspension oil cylinders corresponding to each vehicle bridge
Contracting controls.
In engineering truck can by a lift controil valve, to multiple vehicle bridge, corresponding hydro pneumatic suspension carries out elevating control,
Lift controil valve 9 can specifically include the 3rd electromagnetic valve Y9, the 4th electromagnetic valve Y12, the 5th electromagnetic valve Y13 and the 6th electromagnetic valve
Y16, the 3rd electromagnetic valve Y9 and the 5th electromagnetic valve Y13 are respectively to oil-feed oil circuit and two suspension oil cylinders corresponding to each vehicle bridge
Open and close controlling is realized in fluid passage between rod chamber, the 4th electromagnetic valve Y12 and the 6th electromagnetic valve 16 respectively to oil return circuit with
Open and close controlling is realized in the fluid passage between the rodless cavity of two suspension oil cylinders corresponding to each vehicle bridge.
Taking the elevating control function of the suspension oil cylinder 2 in Fig. 4 as a example, when hydraulic pump 1 is in running order, electrical control system
System provides electric signal, makes the first electromagnetic valve Y1 in suspension valve 6, the second electromagnetic valve Y2, the first overflow valve Y3 and the first ball valve
Y4 is in non-spring working position.When the 3rd electromagnetic valve Y9, the 5th electromagnetic valve Y13 obtain electric, then suspension oil cylinder 2 is due to big loculus
Pressure differential and stretch out, now vehicle frame raise；And when the 4th electromagnetic valve Y12, the 6th electromagnetic valve Y16 obtain electric, then suspension oil cylinder 2 exists
Retract in the presence of vehicle frame gravity, now vehicle frame reduces.
Because the usual main screw lift of engineering truck is very heavy, axle load is more than 12 tons in extreme circumstances, therefore it is also contemplated that protecting
Shield electromagnetic switch valve group, from excessive impact, therefore can increase in lift controil valve 9 further and be provided with certain pressure
Second overflow valve Y10 and the 3rd overflow valve Y14, the second overflow valve Y10 and the 3rd overflow valve Y14 is separately positioned on each vehicle bridge institute
Rodless cavity each fluid passage and the 4th electromagnetic valve Y12 and the 6th electromagnetic valve Y16 between of corresponding two suspension oil cylinders 2,3
On.When electromagnetic valve Y1, Y2, Y3, Y4, Y12, Y16 obtain electric, fluid flows to the second overflow valve Y10 and inside suspension oil cylinder 2,3
Three overflow valve Y14, the oil pressure relief that it sets is equivalent to increases a kind of towing force to vehicle, exceedes overflow set pressure vehicle frame ability
Decline, realize alleviating compression shock effect.
Lift controil valve 9 can further include the second ball valve Y11 and the 3rd ball valve Y15, can manual release each
The pressure of the rodless cavity of two suspension oil cylinders 2,3 corresponding to vehicle bridge.When engineering vehicle chassis, electrically or engine in situ occurs
Fault, when engineering truck is dragged to maintenace point, it is possible to use the second ball valve Y11 and the 3rd ball valve Y15 is by suspension oil cylinder 2,3
Pressure oil liquid in rodless cavity is released oil sump tank 8, thus realizing the manual reduction of vehicle frame, being conducive to decentralization, increasing trailer
When safety.
Above-mentioned each hydro pneumatic suspension control system embodiment of the present invention is applied to all kinds of engineering trucks, and engineering truck includes car
Frame, at least two vehicle bridge and the hydro pneumatic suspension corresponding to each vehicle bridge, also include foregoing hydro pneumatic suspension control system.
By the suspension valve of the present invention under hydro pneumatic suspension is in rigid state, the liquid chambers of closing accumulator have bar with suspension oil cylinder
Fluid passage between chamber, eliminates in existing hydro pneumatic suspension and causes car because energy storage pressure is not enough or a certain vehicle bridge is overweight
Bridge progressively downward trend, stops vehicle bridge from declining, improves the safety of whole machine.
Finally it should be noted that:Above example is only not intended to limit in order to technical scheme to be described；To the greatest extent
Pipe has been described in detail to the present invention with reference to preferred embodiment, and those of ordinary skill in the art should be understood：Still
The specific embodiment of the present invention can be modified or equivalent is carried out to some technical characteristics；Without deviating from this
The spirit of bright technical scheme, it all should be covered in the middle of the technical scheme scope that the present invention is claimed.
Claims (11)
1. a kind of hydro pneumatic suspension control system, for being controlled to hydro pneumatic suspension, described hydro pneumatic suspension is included in vehicle bridge both sides
Two suspension oil cylinders being arranged symmetrically and two accumulators, described hydro pneumatic suspension control system includes being arranged symmetrically in vehicle bridge both sides
Two suspension valves it is characterised in that the liquid chambers of described accumulator are by the suspension valve of this side suspension oil with this side respectively
The rodless cavity of cylinder is connected with the rod chamber fluid of the suspension oil cylinder of offside, is in described outstanding under rigid state in described hydro pneumatic suspension
Fluid passage between the liquid chambers of accumulator of this side of frame valve closure and the rod chamber of suspension oil cylinder of offside, described suspension valve
Including the first electromagnetic valve and the second electromagnetic valve, the liquid chambers of the accumulator to described this side of suspension valve for described first electromagnetic valve with right
Fluid passage between the rod chamber of suspension oil cylinder of side realizes independent open and close controlling, and described second electromagnetic valve is to described suspension
Fluid passage between the rodless cavity of suspension oil cylinder of the liquid chambers of the accumulator of this side of valve and this side realizes independent opening and closing control
System.
2. hydro pneumatic suspension control system according to claim 1 is it is characterised in that described suspension valve also includes the first overflow
Valve, realizes the overflow protection of the liquid chambers of the accumulator to described this side of suspension valve.
3. hydro pneumatic suspension control system according to claim 2 is it is characterised in that described suspension valve also includes the first ball
Valve, is capable of the pressure of the liquid chambers of accumulator of this side of suspension valve described in manual release.
4. according to the arbitrary described hydro pneumatic suspension control system of claims 1 to 3 it is characterised in that described hydro pneumatic suspension controls
System also includes the lift controil valve being arranged in oil-feed oil circuit and oil return circuit, realizes two corresponding to each vehicle bridge are hanged
The extension and contraction control of frame oil cylinder.
5. hydro pneumatic suspension control system according to claim 4 is it is characterised in that described lift controil valve includes the 3rd electricity
Magnet valve, the 4th electromagnetic valve, the 5th electromagnetic valve and the 6th electromagnetic valve, described 3rd electromagnetic valve and the 5th electromagnetic valve are respectively to oil-feed oil
Open and close controlling is realized in the fluid passage between the rod chamber of two suspension oil cylinders corresponding to road and each vehicle bridge, described 4th electricity
Magnet valve and the 6th electromagnetic valve are respectively to the stream between the rodless cavity of two suspension oil cylinders corresponding to oil return circuit and each vehicle bridge
Body passage realizes open and close controlling.
6. hydro pneumatic suspension control system according to claim 5 is it is characterised in that described lift controil valve also includes second
Overflow valve and the 3rd overflow valve, described second overflow valve and the 3rd overflow valve are separately positioned on corresponding to each vehicle bridge two and hang
The rodless cavity of frame oil cylinder is each on the fluid passage and described 4th electromagnetic valve and the 6th electromagnetic valve between.
7. hydro pneumatic suspension control system according to claim 6 is it is characterised in that described lift controil valve also includes second
Ball valve and the 3rd ball valve, are capable of the pressure of the rodless cavity of two suspension oil cylinders corresponding to each vehicle bridge of manual release.
8. a kind of engineering truck, including vehicle frame, at least two vehicle bridge and the hydro pneumatic suspension corresponding to each vehicle bridge, its feature exists
In also including the arbitrary described hydro pneumatic suspension control system of claim 1～7.
9., it is characterised in that including the first electromagnetic valve and the second electromagnetic valve, described first electromagnetic valve is to described outstanding for a kind of suspension valve
Fluid passage between the liquid chambers of accumulator of this side of frame valve and the rod chamber of suspension oil cylinder of offside realizes independent opening and closing
Control, the rodless cavity of the liquid chambers of the accumulator to described this side of suspension valve for described second electromagnetic valve and the suspension oil cylinder of this side it
Between fluid passage realize independent open and close controlling.
10., it is characterised in that described suspension valve also includes the first overflow valve, it is right to realize for suspension valve according to claim 9
The overflow protection of the liquid chambers of accumulator of described this side of suspension valve.
11. suspension valves according to claim 10, being capable of handss it is characterised in that described suspension valve also includes the first ball valve
The pressure of the dynamic liquid chambers of accumulator discharging described this side of suspension valve.
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| CN201410151307.1A CN103879257B (en) | 2014-04-15 | 2014-04-15 | Suspension valve, hydro pneumatic suspension control system and engineering truck |
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| CN201410151307.1A CN103879257B (en) | 2014-04-15 | 2014-04-15 | Suspension valve, hydro pneumatic suspension control system and engineering truck |
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| CN103879257B true CN103879257B (en) | 2017-03-01 |
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| CN104129250A (en) * | 2014-08-05 | 2014-11-05 | 中联重科股份有限公司 | Vehicle, vehicle leveling system, vehicle leveling method and hydro-pneumatic suspension leveling device |
| CN104691266B (en) * | 2015-02-11 | 2017-01-25 | 太原科技大学 | A Hydro-pneumatic Suspension Control System for Multi-Axle Vehicle Chassis |
| CN106089834B (en) * | 2016-08-08 | 2018-01-02 | 湖北航天技术研究院特种车辆技术中心 | A kind of integrated control valve group |
| CN107696818B (en) * | 2017-11-08 | 2023-11-21 | 吉林大学 | A hydropneumatic suspension system that can achieve quasi-zero stiffness in the equilibrium position |
| CN111169246A (en) * | 2019-12-31 | 2020-05-19 | 徐工集团工程机械有限公司 | Chassis and vehicle |
| CN114193992A (en) * | 2021-09-13 | 2022-03-18 | 天嘉智能装备制造江苏股份有限公司 | An adjustable oil-gas suspension system device with locking function for snow removal vehicle |
| CN117429211A (en) * | 2023-11-02 | 2024-01-23 | 徐州重型机械有限公司 | Hydro-pneumatic suspension system and vehicle |
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| CN204196647U (en) * | 2014-04-15 | 2015-03-11 | 徐州重型机械有限公司 | Suspension valve, hydro pneumatic suspension control system and engineering truck |
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| CN201272219Y (en) * | 2008-06-30 | 2009-07-15 | 徐州重型机械有限公司 | Oil gas suspension control circuit, multi-axle vehicle oil gas suspension system and crane |
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| CN103879257A (en) | 2014-06-25 |
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