CN201856597U - Suspension valve, hydro-pneumatic suspension system and engineering vehicle - Google Patents
Suspension valve, hydro-pneumatic suspension system and engineering vehicle Download PDFInfo
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- CN201856597U CN201856597U CN2010205088181U CN201020508818U CN201856597U CN 201856597 U CN201856597 U CN 201856597U CN 2010205088181 U CN2010205088181 U CN 2010205088181U CN 201020508818 U CN201020508818 U CN 201020508818U CN 201856597 U CN201856597 U CN 201856597U
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Abstract
The utility model relates to a suspension valve, which comprises an oil inlet switch lock valve (22), an oil return switch lock valve (21) and a differential pressure sensing logic control component group, wherein the differential pressure sensing logic control component group comprises a logic shuttle valve (23), a differential pressure sensing lock valve (24) and a pilot control valve (25), and the oil return switch lock valve realizes the functions of starting and locking oil return; the oil inlet switch lock valve realizes the functions of starting and locking oil inlet; the logic shuttle valve realizes the logic comparison of the pressure of a suspension oil cylinder with a rod cavity and the pressure of the suspension oil cylinder without a rod cavity; and the differential pressure sensing lock valve realizes differential pressure sensing of the pressure of a suspension oil cylinder with a rod cavity and the pressure of the suspension oil cylinder without a rod cavity and communication lock. In addition, the utility model provides a hydro-pneumatic suspension system adopting the suspension valve, and an engineering vehicle of the hydro-pneumatic suspension system. The differential pressure sensing logic control component group is adopted to more reliably realize the long-time maintenance of rigid and flexible work conditions of the suspension system and the reliable quick switching of the flexible and rigid work conditions, the components of the suspension valve of an axle suspension system are reduced, and the control is simple and convenient.
Description
Technical field
The utility model relates to a kind of suspension valve.In addition, the utility model also relates to a kind of hydro-pneumatic suspension system and engineering truck that comprises described suspension valve.
Background technology
Hydro-pneumatic suspension system is widely used for various mobile type engineering machines, for example wheeled loading-unloading vehicle, mine dumping car, wheel shovel and runabout crane etc.
Existing hydro-pneumatic suspension system mainly adds suspension valve combination isotype by suspension oil cylinder and energy storage combination, suspension oil cylinder and energy storage realizes that each producer adopts suspension oil cylinder and energy storage to add substantially and hangs valve combination isotype.Referring to Fig. 1, wherein the bilateral symmetry of each vehicle bridge A is provided with suspension oil cylinder 7,10, the upper end of suspension oil cylinder 7,10 is hinged on vehicle frame F or the vehicle body, and the lower end is hinged on the corresponding vehicle bridge A, is connected with supporting suspension valve 8,9 and energy storage 4,5 between every pair of suspension oil cylinder 7,10.
Existing suspension technology such as patent CN 101618669A, it adopts two position two-way valve control homonymy suspension oil cylinder rodless cavity and energy storage connected relation, to realize the rigid and flexible conversion of suspension system, wherein so-called rigid state is meant that the suspension oil cylinder only bears complete vehicle weight by a certain bar chamber, having cut off oil cylinder has being communicated with of rodless cavity and damper element energy storage, and flexible state is then opposite; Rigid state generally be vehicle hang carry travel on (for example runabout crane handling weight) and vehicle is flame-out fully and the operating mode of cutting off the power supply under use, rest working conditions is generally used flexible state.The rod chamber of each suspension oil cylinder is communicated with the energy storage of its opposite side, to obtain bigger roll rate, by two position two-way valve control presssure oil circuit and oil return circuit respectively and the connected relation between the suspension oil cylinder rodless cavity, to realize the lifting control of vehicle body, the hydro pneumatic suspension loop and the rear axle hydro pneumatic suspension control loop of all middle part axletrees are a lifting control group, to realize the leveling operation of vehicle body, its essence is by hanging valve to be connected this common-mode realization suspension function with energy storage with the suspension oil cylinder.
But, this existing hydro pneumatic suspension technology adopts two position two-way valve to carry out the conversion of hard and soft property and is subjected to the suspension oil cylinder and bears vehicle-mounted influence, there is the effectively situation of locking in suspension system when rigid state, described two position two-way valve directly bears vehicle-mounted pressure when flexible state, because hydraulic pressure and atmospheric pressure that two position two-way valve bears are bigger, when atmospheric pressure changes, there is the possibility that flexibility is automatically converted to rigidity.In addition, this suspension valve preferentially makes suspension raise, and causes it to hang valve logical relation complexity, realize that the used Hydraulic Elements of enhanced feature must increase, and this has increased the logic control difficulty equally.
Therefore, need a kind of later-model suspension valve, to overcome the above-mentioned shortcoming of prior art.
The utility model content
Technical problem to be solved in the utility model provides a kind of suspension valve, and this suspension valve can guarantee that hard and soft property operating mode is stable, and can realize hanging the radical function of valve, and its control ability is strong simultaneously, and the control logic relation is simple, reliable operation.
The utility model also will provide a kind of hydro-pneumatic suspension system, and this hydro-pneumatic suspension system can guarantee that hard and soft property operating mode is stable, and control ability is strong, and the control logic relation is simple, reliable operation.
In addition, the utility model also will provide a kind of engineering truck, and the hydro-pneumatic suspension system of this project vehicle can guarantee that hard and soft property operating mode is stable, and control ability is strong, and the control logic relation is simple, reliable operation.
For solving the problems of the technologies described above, the utility model provides a kind of suspension valve, and wherein, this suspension valve comprises: oil-feed switch lock valve, this oil-feed switch lock valve are connected between the oil inlet and second interface of described suspension valve; Oil return switch lock valve, this oil return switch lock valve are connected between the return opening and first interface of described suspension valve; Differential pressure sensing logic control element group, this differential pressure sensing logic control element group comprises the logic shuttle valve, differential pressure sensing lock valve and pilot-actuated valve, the oil inlet of wherein said logic shuttle valve connects the energy storage interface of described first interface and described suspension valve respectively, described energy storage interface is connected in described second interface via a side cavity of described differential pressure sensing lock valve, and a side cavity of this differential pressure sensing lock valve also is connected in described first interface, when described differential pressure sensing lock valve locking, described energy storage interface and the described first interface oil circuit disconnect, the opposite side chamber of this differential pressure sensing lock valve is connected in the oil outlet and the described return opening of described logic shuttle valve via described pilot-actuated valve, described pilot-actuated valve optionally makes the opposite side chamber of described differential pressure sensing lock valve be communicated with the oil outlet or the return opening of described logic shuttle valve, and the pilot control opening of this pilot-actuated valve is connected in the control interface of described suspension valve.
The utility model also provides a kind of hydro-pneumatic suspension system, wherein, this hydro-pneumatic suspension system comprises at least one pair of above-mentioned suspension valve, this at least one pair of suspension valve is connected with supporting left side suspension oil cylinder group and right side suspension oil cylinder group separately, the rod chamber of each left side suspension oil cylinder in the suspension oil cylinder group of wherein said left side is interconnected, and the rodless cavity of each left side suspension oil cylinder also is interconnected, the rod chamber of each right side suspension oil cylinder in the suspension oil cylinder group of described right side is interconnected, and the rodless cavity of each right side suspension oil cylinder also is interconnected, rodless cavity of suspension oil cylinder is communicated with on the left of in first interface that left side in the wherein said a pair of suspension valve hangs valve and the described left side suspension oil cylinder group each, the rod chamber of each right side suspension oil cylinder in second interface and the described right side suspension oil cylinder group is communicated with, first interface that right side in the described a pair of suspension valve hangs valve is communicated with the rodless cavity of each right side suspension oil cylinder in the suspension oil cylinder group of described right side, the rod chamber of each left side suspension oil cylinder in second interface and the described left side suspension oil cylinder group is communicated with, described left side hang energy storage interface that valve and right side hang valve be connected on the left of energy storage and right side energy storage.
In addition, the utility model also provides a kind of engineering truck, and this project vehicle comprises above-mentioned hydro-pneumatic suspension system.
By technique scheme of the present utility model, the utility model has been realized the preferential enhanced feature of vehicle bridge suspension system by the design of actv. oil circuit; Realized more reliably that by utilization differential pressure sensing logic control element group the permanent maintenance of the hard and soft property of suspension system operating mode and hard and soft property operating mode failure-free change fast; Effectively reduce simultaneously the various elements of vehicle bridge suspension system suspension valve, avoided prior art to cause problems such as control complexity, logical relation complexity, improved the simplicity of suspension system control.Relevant other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification sheets, is used from explanation the utility model with the specific embodiment one of the present utility model, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the hydro-pneumatic suspension system of prior art;
Fig. 2 is the principle schematic of the suspension valve of the utility model specific embodiment;
Fig. 3 hangs the principle schematic that valve is applied in a kind of conventional installation form in the hydro-pneumatic suspension system;
Fig. 4 is a kind of scheme drawing of new Joining Structure of the suspension valve of the utility model specific embodiment; And
Fig. 5 is the scheme drawing of packet layout structure of the hydro-pneumatic suspension system of the utility model specific embodiment.
Description of reference numerals:
1 pressure oil-source, 2 PLC or microcomputer control unit
3 fuel tanks, 4 preceding right side energy storages
Left side energy storage 6 position transdusers before 5
Suspension valve in left side before the left side suspension oil cylinder 8 before 7
9 preceding right sides hang valve 10 preceding right side suspension oil cylinders
11 position transdusers, 12 position transdusers
The left side hangs valve before the suspension oil cylinder 14 of left side, 13 back
Right side, energy storage 16 back, left side, 15 back hangs valve
Right side, energy storage 18 back, right side, 17 back suspension oil cylinder
19 position transdusers, 20 electropneumatic valves
21 oil return switch lock valves, 22 oil-feed switch lock valves
23 logic shuttle valves, 24 differential pressure sensing lock valves
25 pilot-actuated valves
The A1 first interface A2 second interface
A3 the 3rd interface X control interface
SP energy storage interface P oil inlet
The T return opening
W wheel G vehicle's center of gravity
Vehicle bridge group before the F vehicle frame F G
Vehicle bridge group A vehicle bridge behind the BG
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
Need to prove; hereinafter for setting forth the clear convenient noun of locality that uses; left side, preceding right side, left side, back, right side, back etc. are all identical to the orientation of engineering truck with the hydro-pneumatic suspension system actual installation for example, and it does not constitute the restriction to the utility model protection domain.
Referring to Fig. 1, Fig. 1 has shown the general installation form of suspension valve in hydro-pneumatic suspension system, and wherein, the bilateral symmetry of each vehicle bridge A is provided with suspension oil cylinder 7,10, the upper end of suspension oil cylinder 7,10 is hinged on vehicle frame F or the vehicle body, and the lower end is hinged on the corresponding vehicle bridge A, every pair of suspension oil cylinder 7, be connected with supporting suspension valve 8,9 and energy storage 4,5 between 10.
Fig. 2 has shown the suspension valve of the utility model specific embodiment, this suspension valve comprises: oil-feed switch lock valve 22, this oil-feed switch lock valve 22 is connected between the oil inlet P and the second interface A2 of described suspension valve, and the second interface A2 is used to connect the rod chamber of suspension oil cylinder; Oil return switch lock valve 21, this oil return switch lock valve 21 are connected between the oil return inlet T and the first interface A1 of described suspension valve, and the first interface A1 is used to connect the rodless cavity of suspension oil cylinder; Differential pressure sensing logic control element group, this differential pressure sensing logic control element group comprises logic shuttle valve 23, differential pressure sensing lock valve 24 and pilot-actuated valve 25, wherein the oil outlet of logic shuttle valve 23 connects the energy storage interface SP of the first interface A1 and described suspension valve respectively, described energy storage interface SP is connected in the second interface A2 via a side cavity of differential pressure sensing lock valve 24, and a side cavity of this differential pressure sensing lock valve 24 also is connected in the first interface A1, when described differential pressure sensing lock valve 24 lockings, described energy storage interface SP and the described first interface A1 oil circuit disconnect, the opposite side chamber of this differential pressure sensing lock valve 24 is connected in the oil outlet and the oil return inlet T of logic shuttle valve 23 via pilot-actuated valve 25, pilot-actuated valve 25 optionally makes the opposite side chamber of differential pressure sensing lock valve 24 be communicated with the oil outlet or the described oil return inlet T of described logic shuttle valve 23, and the pilot control opening of this pilot-actuated valve 25 is connected in the control interface X of described suspension valve.
Wherein, oil return switch lock valve 21 adopts automatically controlled electromagnetic valve to realize oil return unlatching and latch functions; Oil-feed switch lock valve 22 adopts automatically controlled electromagnetic valve to realize oil-feed unlatching and latch functions; Logic shuttle valve 23 realizes that the suspension oil cylinder has the pressure logic contrast of rodless cavity; Differential pressure sensing lock valve 24 realizes that the suspension oil cylinder has the pressure differential pressure sensing of rodless cavity and is communicated with locking; Pilot-actuated valve 25 realizes that the suspension oil cylinder has the connection and the locking of rodless cavity.Logic shuttle valve 23, differential pressure sensing lock valve 24 and pilot-actuated valve 25 form differential pressure sensing logic control element group.
Preferably, pilot-actuated valve 25 is the Pneumatic-control type pilot-actuated valve, and the control interface X of described suspension valve is connected in pressure gas source.
Referring to Fig. 3, Fig. 3 has shown a kind of conventional installation form of suspension valve of the present utility model, and the suspension system of Fig. 3 comprises oil sources 1, PLC or microcomputer control unit 2, fuel tank 3, energy storage 4,5,15,17, hanging oil cylinder 7,10,13,18, hang valve 8,9,14,16, position transduser 6,11,12,19 elements such as grade.Shown in Figure 3 this kind of hydro-pneumatic suspension system adopts known intersection installation form, every pair of suspension oil cylinder (left side suspension oil cylinder 7 and preceding right side suspension oil cylinder 10 for example; And back left side suspension oil cylinder 13 and right side, back suspension oil cylinder 18) be equipped with a pair of suspension valve, wherein the cross connection relation is known, and the corresponding control logic relation also is well known to those skilled in the art, this is repeated no more, it mainly realizes stretching out and withdrawal or leveling locking position of vehicle suspension oil cylinder by being controlled by PLC or 2 pairs of suspension valves of microcomputer control unit and oil circuit trend according to various operating modes, and then satisfies the various suspension demands of vehicle.
Fig. 4 has shown the installation form (the interface annexation of above-mentioned known intersection installation form also can with reference to this installation form) of a kind of more later-model hydro-pneumatic suspension system that adopts suspension valve of the present utility model.
Referring to Fig. 4, this hydro-pneumatic suspension system comprises at least one pair of above-mentioned suspension valve, this at least one pair of suspension valve is connected with supporting left side suspension oil cylinder group and right side suspension oil cylinder group, the rod chamber of each left side suspension oil cylinder 7 in the suspension oil cylinder group of wherein said left side is interconnected, and the rodless cavity of each left side suspension oil cylinder 7 also is interconnected, the rod chamber of each right side suspension oil cylinder 10 in the suspension oil cylinder group of described right side is interconnected, and the rodless cavity of each right side suspension oil cylinder 10 also is interconnected, rodless cavity of suspension oil cylinder 7 is communicated with on the left of in the first interface A1 that left side in the wherein said a pair of suspension valve hangs valve 8 and the described left side suspension oil cylinder group each, the rod chamber of each right side suspension oil cylinder 10 in the second interface A2 and the described right side suspension oil cylinder group is communicated with, the first interface A1 that right side in the described a pair of suspension valve hangs valve is communicated with the rodless cavity of each right side suspension oil cylinder 10 in the suspension oil cylinder group of described right side, the rod chamber of each left side suspension oil cylinder 7 in the second interface A2 and the described left side suspension oil cylinder group is communicated with, described left side hang energy storage interface SP that valve and right side hang valve be connected on the left of energy storage 5 and right side energy storage 4.
Referring to Fig. 4, the first interface A1 that hangs valve connects the rodless cavity of suspension oil cylinder, and the second interface A2 connects the rod chamber of suspension oil cylinder, and energy storage interface SP connects energy storage, and P is an oil inlet, and T is a return opening, and control interface X connects the gas control source of the gas.
Preferably, control interface X is connected in pressure gas source by electropneumatic valve 20.
The rod chamber that is communicated with the suspension oil cylinder when P mouth pressure oil by oil-feed switch lock valve 22 with the second interface A2, this moment, the oil return of T mouth was communicated with the rodless cavity of suspension oil cylinder by the oil return switch lock valve 21 and the first interface A1, thereby realized the preferential retraction function of suspension oil cylinder, promptly realized the preferential enhanced feature of vehicle bridge suspension system.
When oil-feed switch lock valve 22 and oil return switch lock valve 21 are realized locking, control interface X cut-in pressure source of the gas, make pilot-actuated valve 25 that the control mouth of differential pressure sensing lock valve 24 is received fuel tank 3, the bar cavity pressure that has or not of suspension oil cylinder promotes rod chamber, rodless cavity and energy storage that differential pressure sensing lock valve 24 is communicated with the suspension oil cylinder simultaneously, still can stablize, directly realize the flexibility function of suspension system when air pressure changes.
When oil-feed switch lock valve 22 and oil return switch lock valve 21 are realized locking, make control interface X connect the atmosphere source of the gas, make pilot-actuated valve 25 the control mouth of differential pressure sensing lock valve 24 be received the rod chamber and the rodless cavity of suspension oil cylinder, thereby the rod chamber of suspension oil cylinder and rodless cavity pressure act on simultaneously and can not promote differential pressure sensing lock valve 24, thereby the rodless cavity of suspension oil cylinder and rod chamber and two oil circuits of energy storage are closed simultaneously, therefore stable, realize the rigid function of suspension system reliably.
In the installation form of above-mentioned hydro-pneumatic suspension system,, can realize the grouping of vehicle fore suspension and rear suspension oil cylinder to this according to the center-of-gravity position of vehicle because it comprises left side suspension oil cylinder group and right side suspension oil cylinder group.
Referring to Fig. 5, shown the packet layout structure of five vehicle bridge vehicles according to the hydro-pneumatic suspension system of vehicle's center of gravity position, wherein vehicle's center of gravity position G (being the centroid position of vehicle) is between propons grouping FG and back axle grouping BG, propons grouping FG comprises two vehicle bridge, back axle grouping BG comprises three vehicle bridge, that is to say that the vehicle bridge quantity of back axle grouping BG is Duoed a vehicle bridge than the vehicle bridge quantity of propons grouping FG.More specifically, the major technique of the packet layout structure of hydro-pneumatic suspension system of the present utility model is contemplated that: the upper end of the suspension oil cylinder of described hydro-pneumatic suspension system is hinged on vehicle frame or the vehicle body, the lower end is hinged on (bilateral symmetry that is each vehicle bridge is furnished with hanging oil cylinder) on the corresponding vehicle bridge, wherein, described vehicle bridge comprises propons grouping FG and back axle grouping BG, the center-of-gravity position G of described vehicle is between described propons grouping FG and back axle grouping BG, and the vehicle bridge quantity of described back axle grouping BG equals the vehicle bridge quantity of described propons grouping FG, perhaps only Duos a vehicle bridge than the vehicle bridge quantity of described propons grouping FG.Like this, after hydro-pneumatic suspension system adopts above-mentioned packet layout structure, can adopt a pair of suspension valve shown in Figure 4 to install left side suspension oil cylinder group before corresponding and preceding right side suspension oil cylinder group, similarly, left side, back suspension oil cylinder group and right side, back suspension oil cylinder group also can adopt a pair of suspension valve shown in Figure 4 to install.That is to say that the realization of its function is described as reference Fig. 4, it has realized the control of the hard and soft property of suspension handoff functionality simultaneously, and the object of control becomes grouping suspension oil cylinder by single suspension oil cylinder.
By last description as seen, the utility model has been realized the preferential enhanced feature of vehicle bridge suspension system by the design of actv. oil circuit; By utilization differential pressure sensing logic control element group more failure-free realized that the permanent maintenance of the hard and soft property of suspension system operating mode and hard and soft property operating mode failure-free change fast; Effectively reduce the various elements of vehicle bridge suspension system suspension valve, avoided prior art to cause problems such as control complexity, logical relation complexity, improved the simplicity of suspension system control.In addition, under preferred implementation, by increasing electropneumatic valve 20, realized the air pressure control of the control interface X of suspension valve, realized the control of the hard and soft property of suspension handoff functionality simultaneously, the object of its control becomes grouping suspension oil cylinder by single suspension oil cylinder, thereby control interface is simpler, controls convenient.
Simultaneously, intersect control linkage about suspension system of the present utility model adopts, front and back are carried out front and back according to the vehicle's center of gravity position and are divided into groups, and vehicle frame and the vehicle body to engineering truck supports better, realize the axle load equilibrium function of suspension system, and helped the realization of fast leveling function.
Need to prove that each the concrete technical characterictic described in the above-mentioned specific embodiment can carry out combination in any by any suitable manner, it falls within the scope disclosed in the utility model equally.In addition, also can carry out combination in any between the various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.For example, can adopt other control element such as micro controller system, electronic component to constitute PLC or microcomputer control unit 2; The mode of pilot-actuated valve can realize by modes such as automatically controlled, gas control and hydraulic controls; Before and after the suspension oil cylinder is being carried out under the situation of grouping, be interconnected and make rodless cavity be interconnected by rod chamber the suspension oil cylinder in the grouping of front and back, can only adopt a pair of suspension valve to realize the function of suspension system.Protection domain of the present utility model is defined by the claims.
Claims (11)
1. a suspension valve is characterized in that, this suspension valve comprises:
Oil-feed switch lock valve (22), this oil-feed switch lock valve (22) are connected between the oil inlet (P) and second interface (A2) of described suspension valve;
Oil return switch lock valve (21), this oil return switch lock valve (21) are connected between the return opening (T) and first interface (A1) of described suspension valve;
Differential pressure sensing logic control element group, this differential pressure sensing logic control element group comprises logic shuttle valve (23), differential pressure sensing lock valve (24) and pilot-actuated valve (25), the oil inlet of wherein said logic shuttle valve (23) connects the energy storage interface (SP) of described first interface (A1) and described suspension valve respectively, described energy storage interface (SP) is connected in described second interface (A2) via a side cavity of described differential pressure sensing lock valve (24), and a side cavity of this differential pressure sensing lock valve (24) also is connected in described first interface (A1), when described differential pressure sensing lock valve (24) locking, described energy storage interface (SP) disconnects with described first interface (A1) oil circuit, the opposite side chamber of this differential pressure sensing lock valve (24) is connected in the oil outlet and the described return opening (T) of described logic shuttle valve (23) via described pilot-actuated valve (25), described pilot-actuated valve (25) optionally makes the opposite side chamber of described differential pressure sensing lock valve (24) be communicated with the oil outlet or the described return opening (T) of described logic shuttle valve (23), and the pilot control opening of this pilot-actuated valve (25) is connected in the control interface (X) of described suspension valve.
2. suspension valve according to claim 1 is characterized in that, described oil-feed switch lock valve (22) and oil return switch lock valve (21) are automatically controlled electromagnetic valve.
3. suspension valve according to claim 1 is characterized in that, described pilot-actuated valve (25) is the Pneumatic-control type pilot-actuated valve.
4. hydro-pneumatic suspension system, it is characterized in that, this hydro-pneumatic suspension system comprises at least one pair of suspension valve according to claim 1, this at least one pair of suspension valve is connected with supporting left side suspension oil cylinder group and right side suspension oil cylinder group separately, the rod chamber of each left side suspension oil cylinder (7) in the suspension oil cylinder group of wherein said left side is interconnected, and the rodless cavity of each left side suspension oil cylinder (7) also is interconnected, the rod chamber of each right side suspension oil cylinder (10) in the suspension oil cylinder group of described right side is interconnected, and the rodless cavity of each right side suspension oil cylinder (10) also is interconnected, rodless cavity of suspension oil cylinder (7) is communicated with on the left of in first interface (A1) that left side in the wherein said a pair of suspension valve hangs valve (8) and the described left side suspension oil cylinder group each, the rod chamber of each right side suspension oil cylinder (10) in second interface (A2) and the described right side suspension oil cylinder group is communicated with, the rodless cavity of each right side suspension oil cylinder (10) in first interface (A1) that right side in the described a pair of suspension valve hangs valve (9) and the described right side suspension oil cylinder group is communicated with, the rod chamber of each left side suspension oil cylinder (7) in second interface (A2) and the described left side suspension oil cylinder group is communicated with, energy storage (5) and right side energy storage (4) on the left of the energy storage interface (SP) that described left side hangs valve (8) and right side suspension valve (9) is connected to.
5. hydro-pneumatic suspension system according to claim 4, it is characterized in that, described left side suspension oil cylinder group and right side suspension oil cylinder group are carried out the front and back grouping according to the center-of-gravity position of vehicle, wherein the upper end of each hanging oil cylinder is hinged on vehicle frame (F) or the vehicle body, the lower end is hinged on the corresponding vehicle bridge, described vehicle bridge comprises propons grouping (FG) and back axle grouping (BG), and the center-of-gravity position of described vehicle (G) is positioned between described propons grouping (FG) and the back axle grouping (BG).
6. hydro-pneumatic suspension system according to claim 5 is characterized in that, the vehicle bridge quantity of described back axle grouping (BG) equals the vehicle bridge quantity of described propons grouping (FG), perhaps only Duos a vehicle bridge than the vehicle bridge quantity of described propons grouping (FG).
7. hydro-pneumatic suspension system according to claim 4 is characterized in that, described pilot-actuated valve (25) is the Pneumatic-control type pilot-actuated valve, and the control interface of described suspension valve (X) is connected in pressure gas source.
8. hydro-pneumatic suspension system according to claim 7 is characterized in that, the control interface of described suspension valve (X) is connected in pressure gas source by electropneumatic valve (20).
9. hydro-pneumatic suspension system, it is characterized in that, this hydro-pneumatic suspension system comprises double-type suspension valve according to claim 1, every pair of described suspension valve is connected with supporting left side suspension oil cylinder (7 separately, 13) and right side suspension oil cylinder (10,18), left side in the wherein said a pair of suspension valve hangs valve (8,14) first interface (A1) and corresponding described left side suspension oil cylinder (7,13) rodless cavity is communicated with, and second interface (A2) is communicated with the rod chamber of corresponding described right side suspension oil cylinder (10,18), right side in the described a pair of suspension valve hangs valve (9,16) first interface (A1) is communicated with the rodless cavity of corresponding described right side suspension oil cylinder (10,18), second interface (A2) and corresponding described left side suspension oil cylinder (7,13) rod chamber is communicated with, the energy storage interface (SP) that described left side hangs valve (8,14) and right side suspension valve (9,16) is connected to left side energy storage (5,15) and right side energy storage (4,17).
10. hydro-pneumatic suspension system according to claim 9 is characterized in that, described pilot-actuated valve (25) is the Pneumatic-control type pilot-actuated valve, and the control interface of described suspension valve (X) is connected in pressure gas source.
11. an engineering truck is characterized in that, this project vehicle comprises according to each described hydro-pneumatic suspension system in the claim 4 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205088181U CN201856597U (en) | 2010-08-26 | 2010-08-26 | Suspension valve, hydro-pneumatic suspension system and engineering vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205088181U CN201856597U (en) | 2010-08-26 | 2010-08-26 | Suspension valve, hydro-pneumatic suspension system and engineering vehicle |
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| CN201856597U true CN201856597U (en) | 2011-06-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039792A (en) * | 2010-08-26 | 2011-05-04 | 长沙中联重工科技发展股份有限公司 | Suspension valve, oil gas suspension system and engineering vehicle |
| WO2013104199A1 (en) * | 2012-01-09 | 2013-07-18 | 中联重科股份有限公司 | Combination of suspension systems, multiple-axle vehicle and multiple-axle chassis |
| CN103640448A (en) * | 2013-12-03 | 2014-03-19 | 中联重科股份有限公司 | Oil and gas suspension control system, oil cylinder leveling method and engineering vehicle |
| CN107696819A (en) * | 2017-11-11 | 2018-02-16 | 吉林大学 | The quasi- zero stiffness suspension system of SA |
| CN107738550A (en) * | 2017-11-14 | 2018-02-27 | 常州万安汽车部件科技有限公司 | The control method of vehicle suspension system, motor vehicle and vehicle suspension system |
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2010
- 2010-08-26 CN CN2010205088181U patent/CN201856597U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039792A (en) * | 2010-08-26 | 2011-05-04 | 长沙中联重工科技发展股份有限公司 | Suspension valve, oil gas suspension system and engineering vehicle |
| WO2012024945A1 (en) * | 2010-08-26 | 2012-03-01 | 长沙中联重工科技发展股份有限公司 | Suspension valve, oil-gas suspension system and engineering vehicle |
| CN102039792B (en) * | 2010-08-26 | 2013-03-20 | 中联重科股份有限公司 | Suspension valve, oil gas suspension system and engineering vehicle |
| WO2013104199A1 (en) * | 2012-01-09 | 2013-07-18 | 中联重科股份有限公司 | Combination of suspension systems, multiple-axle vehicle and multiple-axle chassis |
| CN103640448A (en) * | 2013-12-03 | 2014-03-19 | 中联重科股份有限公司 | Oil and gas suspension control system, oil cylinder leveling method and engineering vehicle |
| CN103640448B (en) * | 2013-12-03 | 2016-02-03 | 中联重科股份有限公司 | Oleo-pneumatic suspension control system, oil cylinder leveling method and engineering truck |
| CN107696819A (en) * | 2017-11-11 | 2018-02-16 | 吉林大学 | The quasi- zero stiffness suspension system of SA |
| CN107738550A (en) * | 2017-11-14 | 2018-02-27 | 常州万安汽车部件科技有限公司 | The control method of vehicle suspension system, motor vehicle and vehicle suspension system |
| CN107738550B (en) * | 2017-11-14 | 2024-01-30 | 常州万安汽车部件科技有限公司 | Vehicle suspension system, motor vehicle, and control method for vehicle suspension system |
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Address after: 410013 No. 361 South silver basin, Hunan, Changsha Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 No. 361 South silver basin, Hunan, Changsha Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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