CN103042893B - Hydro-pneumatic suspension system and engineering truck - Google Patents
Hydro-pneumatic suspension system and engineering truck Download PDFInfo
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- CN103042893B CN103042893B CN201210581006.3A CN201210581006A CN103042893B CN 103042893 B CN103042893 B CN 103042893B CN 201210581006 A CN201210581006 A CN 201210581006A CN 103042893 B CN103042893 B CN 103042893B
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- hanging oil
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Abstract
The invention provides a kind of hydro-pneumatic suspension system and engineering truck, this hydro-pneumatic suspension system comprises hanging oil cylinder and energy storage, it is characterized in that, the rodless cavity of described hanging oil cylinder is communicated with described energy storage by control cock with rod chamber, is provided with adjustable damping arrangement at the rod chamber of described hanging oil cylinder to the oil circuit of described energy storage.Hydro-pneumatic suspension system of the present invention is provided with adjustable damping arrangement, therefore can according to different road conditions, and real-time damping adjusting power, optimizes the damping effect under different road conditions, better adapts to different road conditions demand.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of hydro-pneumatic suspension system and engineering truck.
Background technology
Oleo-pneumatic suspension is with fluid transmission of pressure, using unreactable gas (being generally nitrogen) as elastic medium, a kind of suspension gear using cutoff port, check valve etc. as shock absorber component, because it has good cushioning performance, ride comfort and vehicle run stability, a lot of Wheel Engineering is widely applied, as full Terrain Cranes, quarry tipper, missile transporter vehicle etc.At present, the oleo-pneumatic suspension major part of engineering truck all belongs to passive suspension category, in vehicle travel process, its rigidity and damping force characteristics all cannot carry out active adjustment, can not meet completely complicated road and driving cycle demand (as expressway travel time, for improving car body stability, be then necessary suitably to increase to hang dumping force; During as land locomotion, grabbing ground ability and traveling comfort for improving tire, being necessary suitably to reduce to hang dumping force).And cylinder barrel and the piston rod relative position of hanging oil cylinder cannot realize real-time monitoring, thus accurately cannot control vehicle body attitude in real time, under severe road conditions, (as culvert, gully) carrying capacity is poor.
Summary of the invention
In view of this, the present invention is intended to propose a kind of hydro-pneumatic suspension system and engineering truck, cannot carry out with the rigidity and damping force characteristics that solve suspension the problem that can not meet complicated road and driving cycle demand completely that active adjustment causes.
For achieving the above object, technical scheme of the present invention is achieved in that
On the one hand, the invention provides a kind of hydro-pneumatic suspension system, comprise hanging oil cylinder and energy storage, it is characterized in that, the rodless cavity of described hanging oil cylinder is communicated with described energy storage by control cock with rod chamber, and the oil circuit between the rod chamber and described energy storage of described hanging oil cylinder is provided with adjustable damping arrangement.
Further, also comprise controller and be arranged on position transduser in described hanging oil cylinder, described position transduser is used for detecting in real time the cylinder barrel of described hanging oil cylinder and the relative position of piston rod and described detection signal is sent to described controller.
Further, the lift controil valve for the rodless cavity oil-feed or oil extraction controlling described hanging oil cylinder is also comprised.
Further, described damping arrangement is the apportioning valve or the Multi-stage damping transfer valve that are controlled by described controller.
Further, described Multi-stage damping transfer valve comprise at least two damping holes parallel with one another and with at least one directional control valve of connecting in described damping hole.
Further, described hanging oil cylinder comprises left hanging oil cylinder and right hanging oil cylinder, described energy storage comprises left energy storage and right energy storage, described damping arrangement comprises left damping arrangement and right damping arrangement, described left energy storage is communicated with the rodless cavity of described left hanging oil cylinder and the rod chamber of right hanging oil cylinder simultaneously, described right energy storage is communicated with the rodless cavity of described right hanging oil cylinder and the rod chamber of left hanging oil cylinder simultaneously, described left damping arrangement is arranged on the oil circuit between described left energy storage and described right hanging oil cylinder rod chamber, described right damping arrangement is arranged on the oil circuit between described right energy storage and described left hanging oil cylinder rod chamber.
Further, described control cock comprise respectively with described left damping arrangement, the left check valve of right damping arrangement parallel connection, right check valve, the circulating direction of described left check valve is by the rod chamber of the described left hanging oil cylinder of the unidirectional inflow of described right energy storage, the circulating direction of described right check valve is by the rod chamber of the described right hanging oil cylinder of the unidirectional inflow of described left energy storage, namely the oil inlet of this left check valve is communicated with right energy storage, oil outlet is communicated with the rodless cavity of this left hanging oil cylinder, the oil inlet of right check valve is communicated with left energy storage 21, oil outlet is communicated with the rodless cavity of right hanging oil cylinder.
Further, described control cock also comprises on the oil circuit that is arranged between described left energy storage and described left hanging oil cylinder rodless cavity, and the directional control valve on oil circuit between described right energy storage and described right hanging oil cylinder rodless cavity.
Further, the sensing element that described position transduser comprises the feeler lever in the cylinder barrel being connected to described hanging oil cylinder and is arranged on the piston rod of described hanging oil cylinder, described feeler lever and described sensing element are socketed and can be movable relatively and detect the position of described cylinder barrel relative to described piston rod with real-time continuous.
Further, described lift controil valve is the solenoid directional control valve being controlled by described controller.
Further, described directional control valve is the two-position two-way solenoid valve being controlled by described controller.
On the other hand, present invention also offers a kind of engineering truck being provided with hydro-pneumatic suspension system as above.
Relative to prior art, the present invention has following advantage:
(1) hydro-pneumatic suspension system of the present invention is provided with adjustable damping arrangement, therefore can according to different road conditions, and real-time damping adjusting power, optimizes the damping effect under different road conditions, better adapts to different road conditions demand.
(2) hydro-pneumatic suspension system of the present invention is provided with built-in position transduser in hanging oil cylinder, the relative position of cylinder barrel and piston rod can be monitored in real time by controller, and by lift controil valve to the rodless cavity oil extraction of hanging oil cylinder or oil-feed, to regulate the extension elongation of hanging oil cylinder continuously, and then realize overall height continuously adjustabe, accurately can control vehicle body attitude, substantially increase the carrying capacity of vehicle under severe road conditions.
(3) hydro-pneumatic suspension system of the present invention is the mutual connected system in left and right, namely left energy storage is communicated with the rod chamber of right hanging oil cylinder, right energy storage is communicated with the rod chamber of left hanging oil cylinder, this structure makes left hanging oil cylinder when road conditions badly cause stroke larger, left hanging oil cylinder rodless cavity also strengthens left energy storage pressure, and then make left energy storage to the rod chamber pressure increase of right hanging oil cylinder, the stroke of right hanging oil cylinder is made also to become large, and then vehicle's center of gravity is reduced, wigwag motion degree alleviates, make vehicle operating more steady, right hanging oil cylinder principle of work is also like this.
(4) the left hanging oil cylinder of hydro-pneumatic suspension system of the present invention is in compression stroke, and rodless cavity is directly communicated with left energy storage by directional control valve, and therefore give full play to the effect that energy storage absorbs vibration, right hanging oil cylinder principle of work is also like this.
(5) the left hanging oil cylinder of hydro-pneumatic suspension system of the present invention is in recovery stroke, left energy storage by directional control valve directly to rodless cavity repairing, repairing is abundant rapidly, can not produce the problem that ground scarce capacity grabbed by the existing tire that may cause because repairing is insufficient; The rod chamber of left hanging oil cylinder is by the energy storage oil extraction to the right of left damping arrangement simultaneously, and now, left damping arrangement plays the effect of release vibrational energy, and right hanging oil cylinder principle of work is also like this.
(6) hydro-pneumatic suspension system of the present invention left energy storage to left hanging oil cylinder oil circuit on and right energy storage to right hanging oil cylinder oil circuit on be provided with directional control valve, this directional control valve can be used for the connection cutting off energy storage and oil cylinder rodless cavity, and then realizes the rigid locking of hanging oil cylinder.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the hydro-pneumatic suspension system described in the embodiment of the present invention one;
Fig. 2 is the structural representation of the hanging oil cylinder of hydro-pneumatic suspension system described in the embodiment of the present invention one;
Fig. 3 is the schematic diagram of the hydro-pneumatic suspension system described in the embodiment of the present invention two.
Description of reference numerals:
The left hanging oil cylinder of 11-, the right hanging oil cylinder of 12-, 13-cylinder barrel, 14-piston rod, the left energy storage of 21-, the right energy storage of 22-, 3-controller, 4-lift controil valve, 5-position transduser, 51-feeler lever, 52-sensing element, 6-apportioning valve, the left check valve of 71-, the right check valve of 72-, 8-directional control valve, 9-damping hole.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiment one
Fig. 1 and Fig. 2 is the relevant drawings of the present embodiment, as shown in FIG., the hydro-pneumatic suspension system described in the present embodiment comprises controller 3, lift controil valve 4, hanging oil cylinder, energy storage, two position transdusers 5, both direction control cock 8, left damping arrangement, right damping arrangement, left check valve 71 and right check valves 72.Wherein, hanging oil cylinder comprises left hanging oil cylinder 11 and right hanging oil cylinder 12 two, and energy storage comprises left energy storage 21 and right energy storage 22 two, and this directional control valve 8 is for being controlled by the normal close two-position two-way solenoid of controller 3.This left damping arrangement and right damping arrangement are two electric proportional valves 6 being controlled by controller 3.This lift controil valve 4 for being controlled by the solenoid directional control valve of controller 3, this lift controil valve 4 for controlling left hanging oil cylinder 11 rodless cavity and right hanging oil cylinder 12 rodless cavity oil-feed and oil extraction, to realize the expanding-contracting action of hanging oil cylinder.This position transduser 5 comprises the feeler lever 51 be connected in the cylinder barrel 13 of hanging oil cylinder and the sensing element 52 be arranged on the piston rod 14 of hanging oil cylinder, feeler lever 51 and sensing element 52 are socketed, this position transduser 5 detects the position of cylinder barrel 13 relative to piston rod 14 by relative motion real-time continuous, then detection signal is sent to controller 3.The structure of this position transduser 5 and installation site are as shown in Figure 2.
This left energy storage 21 is communicated with the rodless cavity of left hanging oil cylinder 11 and the rod chamber of right hanging oil cylinder 12 simultaneously, and right energy storage 22 is communicated with the rodless cavity of right hanging oil cylinder 12 and the rod chamber of left hanging oil cylinder 11 simultaneously.Two electric proportional valves 6 be connected on left energy storage 21 to the oil circuit of right hanging oil cylinder 12 rod chamber and right energy storage 22 on the oil circuit of left hanging oil cylinder 11 rod chamber.This left check valve 71, right check valve 72 are in parallel with these two electric proportional valves 6 respectively, and this left check valve 71 is by the rod chamber of the right hanging oil cylinder 12 of the unidirectional inflow of left energy storage 21, this right check valve 72 is by the rod chamber of the left hanging oil cylinder 11 of the unidirectional inflow of right energy storage 22, namely the oil inlet of this left check valve 71 is communicated with right energy storage 22, oil outlet is communicated with the rod chamber of left hanging oil cylinder 11, the oil inlet of this right check valve 72 is communicated with left energy storage 21, and oil outlet is communicated with the rod chamber of right hanging oil cylinder 12.Both direction control cock 8 is connected to left energy storage 21 to the oil circuit of left hanging oil cylinder 11 rodless cavity and right energy storage 22 on the oil circuit of right hanging oil cylinder 12 rodless cavity.
The mode of operation of above-mentioned hydro-pneumatic suspension system is as follows:
(1) road running: both direction control cock 8 is obtained electric, left energy storage 21 is communicated with the rodless cavity of left hanging oil cylinder 11, right energy storage 22 is communicated with the rodless cavity of right hanging oil cylinder 12, controller 3 carries out throttling control with realization to the oil return of left hanging oil cylinder 11 and right hanging oil cylinder 12 rod chamber by adjustment two electric proportional valves 6, and then it is adjustable to realize dumping force.
(2) locking: make both direction control cock 8 dead electricity, then the rodless cavity of left hanging oil cylinder 11 and right hanging oil cylinder 12 is all in closed state.
(3) elevating control: export control signal to lift controil valve 4, both direction control cock 8, two electric proportional valves 6 by controller 3, both direction control cock 8 and two electric proportional valves 6 are all opened, two position transdusers 5 detect the extension elongation of hanging oil cylinder and output detection signal to controller 3, realize the real-time continuous monitoring of hanging oil cylinder length, now, the rodless cavity oil extraction or oil-filled of left hanging oil cylinder 11 and right hanging oil cylinder 12 is given by controller 3, just accurately can control the extension elongation of hanging oil cylinder, and then vehicle body attitude is accurately controlled.
Embodiment two
Fig. 3 is the relevant drawings of the present embodiment, as shown in FIG., except damping arrangement, and all the other structures of the present embodiment and the completely the same of embodiment one.Left damping arrangement in the present embodiment and right damping arrangement are Multi-stage damping transfer valve, and this Multi-stage damping transfer valve comprises two damping holes 9 parallel with one another and a directional control valve 8, and this directional control valve 8 is connected with one of them damping hole 9.This directional control valve 8, also for being controlled by the two-position two-way solenoid valve of controller 3, by controlling the break-make of this directional control valve 8, makes damping realize having level adjustable.
As other alternate embodiment of the present embodiment, this damping arrangement can be two or more damping hole 9 parallel with one another, and this directional control valve 8 also can have multiple, and each directional control valve 8 is corresponding respectively connects with a damping hole 9.
Except above-mentioned hydro-pneumatic suspension system, the present invention also provides a kind of engineering truck being provided with above-mentioned hydro-pneumatic suspension system, and the structural reference prior art of other each several part of this project vehicle, repeats no more herein.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a hydro-pneumatic suspension system, comprise hanging oil cylinder and energy storage, it is characterized in that, the rodless cavity of described hanging oil cylinder is communicated with described energy storage by control cock with rod chamber, and the oil circuit between the rod chamber and described energy storage of described hanging oil cylinder is provided with adjustable damping arrangement;
Described hydro-pneumatic suspension system also comprises controller (3) and is arranged on the position transduser (5) in described hanging oil cylinder, described position transduser (5) for the cylinder barrel (13) Yu piston rod (14) that detect described hanging oil cylinder in real time relative position and described detection signal is sent to described controller (3);
Described position transduser (5) comprise be connected to described hanging oil cylinder cylinder barrel (13) in feeler lever (51) and the sensing element (52) that is arranged on the piston rod (14) of described hanging oil cylinder, described feeler lever (51) and described sensing element (52) are socketed and can be movable relatively and detect the position of described cylinder barrel relative to described piston rod with real-time continuous.
2. hydro-pneumatic suspension system according to claim 1, is characterized in that, also comprises the lift controil valve (4) of rodless cavity oil-feed for controlling described hanging oil cylinder or oil extraction.
3. hydro-pneumatic suspension system according to claim 1 and 2, is characterized in that, described damping arrangement is for being controlled by apportioning valve or the Multi-stage damping transfer valve of described controller (3).
4. hydro-pneumatic suspension system according to claim 3, it is characterized in that, described Multi-stage damping transfer valve comprise at least two damping holes (9) parallel with one another and with at least one directional control valve of connecting (8) in described damping hole (9).
5. hydro-pneumatic suspension system according to claim 1 and 2, it is characterized in that, described hanging oil cylinder comprises left hanging oil cylinder (11) and right hanging oil cylinder (12), described energy storage comprises left energy storage (21) and right energy storage (22), described damping arrangement comprises left damping arrangement and right damping arrangement, described left energy storage (21) is communicated with the rodless cavity of described left hanging oil cylinder (11) and the rod chamber of right hanging oil cylinder (12) simultaneously, described right energy storage (22) is communicated with the rodless cavity of described right hanging oil cylinder (12) and the rod chamber of left hanging oil cylinder (11) simultaneously, described left damping arrangement is arranged on described left energy storage (21) on the oil circuit of described right hanging oil cylinder (12) rod chamber, described right damping arrangement is arranged on described right energy storage (22) on the oil circuit of described left hanging oil cylinder (11) rod chamber.
6. hydro-pneumatic suspension system according to claim 5, it is characterized in that, described control cock comprises left check valve (71), right check valve (72) in parallel with described left damping arrangement, right damping arrangement respectively, the circulating direction of described left check valve (71) is by the rod chamber of the described left hanging oil cylinder (11) of the unidirectional inflow of described right energy storage (22), and the circulating direction of described right check valve (72) is by the rod chamber of the described right hanging oil cylinder (12) of the unidirectional inflow of described left energy storage (21).
7. hydro-pneumatic suspension system according to claim 6, it is characterized in that, described control cock also comprise be arranged on described left energy storage (21) to described left hanging oil cylinder (11) rodless cavity oil circuit on, and described right energy storage (22) to described right hanging oil cylinder (12) rodless cavity oil circuit on directional control valve (8).
8. an engineering truck, is characterized in that, described engineering truck is provided with the hydro-pneumatic suspension system as described in claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581006.3A CN103042893B (en) | 2012-12-27 | 2012-12-27 | Hydro-pneumatic suspension system and engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581006.3A CN103042893B (en) | 2012-12-27 | 2012-12-27 | Hydro-pneumatic suspension system and engineering truck |
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| Publication Number | Publication Date |
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| CN103042893A CN103042893A (en) | 2013-04-17 |
| CN103042893B true CN103042893B (en) | 2016-01-20 |
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| CN201210581006.3A Expired - Fee Related CN103042893B (en) | 2012-12-27 | 2012-12-27 | Hydro-pneumatic suspension system and engineering truck |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103241094B (en) * | 2013-05-21 | 2016-05-25 | 威海广泰空港设备股份有限公司 | The automatic horizontal control system of non-rod aircraft tractor |
| CN104832495B (en) * | 2015-03-31 | 2016-11-30 | 徐州重型机械有限公司 | Hanging oil cylinder and crane |
| CN105857005B (en) * | 2016-03-24 | 2018-01-23 | 中国北方车辆研究所 | Single-acting cylinder load-sensitive proportional throttle valve group |
| CN106427455B (en) * | 2016-10-25 | 2019-01-29 | 张家口舒狮汽车科技有限公司 | Vehicle suspension and vehicle |
| CN108437734B (en) * | 2018-03-23 | 2020-02-18 | 三一汽车起重机械有限公司 | Hydro-pneumatic suspension system and engineering machinery with same |
| WO2020199754A1 (en) * | 2019-03-29 | 2020-10-08 | 陈刚 | Electrically controlled hydraulic/pneumatic support shock absorber |
| CN110450592B (en) * | 2019-08-07 | 2024-04-05 | 三一重型装备有限公司 | Hydro-pneumatic suspension device and engineering vehicle |
| CN111022550B (en) * | 2019-12-17 | 2021-09-21 | 徐州徐工液压件有限公司 | Independent hydro-pneumatic suspension with detection device |
| CN111152619A (en) * | 2020-01-13 | 2020-05-15 | 徐工集团工程机械股份有限公司 | Control system and method capable of automatically adjusting oil-gas suspension |
| CN112895831B (en) * | 2021-01-29 | 2022-11-18 | 中国北方车辆研究所 | Multi-axle vehicle posture adjusting system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5098119A (en) * | 1991-03-22 | 1992-03-24 | Trw Inc. | Semi-active suspension system with energy saving |
| FR2706815B1 (en) * | 1993-06-23 | 1995-09-08 | Samm | |
| AUPN384395A0 (en) * | 1995-06-27 | 1995-07-20 | Kinetic Limited | Control method for vehicle suspension system |
| US6575484B2 (en) * | 2001-07-20 | 2003-06-10 | Husco International, Inc. | Dual mode regenerative suspension for an off-road vehicle |
| JP2009023595A (en) * | 2007-07-23 | 2009-02-05 | Hitachi Constr Mach Co Ltd | Suspension device of carrier vehicle |
| CN202507887U (en) * | 2012-02-29 | 2012-10-31 | 三一汽车起重机械有限公司 | Variable damping oil gas suspension system and crane |
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2012
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