CN203543573U - Anti-rollover hydraulic damping system and engineering vehicle - Google Patents
Anti-rollover hydraulic damping system and engineering vehicle Download PDFInfo
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- CN203543573U CN203543573U CN201320594092.1U CN201320594092U CN203543573U CN 203543573 U CN203543573 U CN 203543573U CN 201320594092 U CN201320594092 U CN 201320594092U CN 203543573 U CN203543573 U CN 203543573U
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- way throttle
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Abstract
The utility model provides an anti-rollover hydraulic damping system and an engineering vehicle. The anti-rollover hydraulic damping system comprises a first damping cylinder, a first one-way throttle valve, a third one-way throttle valve, a first energy accumulator, a second damping cylinder, a second one-way throttle valve, a fourth one-way throttle valve, a second energy accumulator, a first stop valve, a second stop valve, a first control valve, a second control valve and a third control valve. By the application of the anti-hydraulic damping system which is simple in structure, the damping function can be realized, vehicle posture can be adjusted in real time, rollover tendency force of a vehicle in working conditions of cornering or running on a sloping road can be prevented, the vehicle can be prevented from rolling over, vehicle safety performance can be improved, and vehicle driving comfortableness can be improved.
Description
Technical field
The utility model relates to engineering truck field, in particular to a kind of anti-rollover hydraulic shock-absorption system and engineering truck.
Background technology
At present, the damping of front handling mobile crane or Forklift mainly realizes in following two kinds of modes: 1) use airtyred front handling mobile crane or Forklift, rely on the elasticity of tire itself to reach shock-absorbing function; 2) use the band tyre that is equipped with hydraulic shock-absorption system, make front handling mobile crane or Forklift reach good damping effect.Although this two schemes can be realized shock-absorbing function, but do not possess dynamic anti-rollover function, more can not realize real-time adjustment body gesture, the rollover tendency power that vehicle has when turning or walk on the road surface of inclination can not get overcoming, the safety existing problems of car load, the traveling comfort of driving does not improve.
Patent CN201110241276.5 discloses a kind of X-type cross damping oil circuit hydraulic efficiency pressure system and has comprised the dynamic compaction machinery of this system, disclosed is before and after a kind of being suitable for or the hydraulic shock-absorption system of left and right distribution damping oil cylinder, do not possess real-time adjustment body gesture, prevent the function of vehicle rollover yet.
Therefore, a kind of anti-rollover hydraulic shock-absorption system is provided and there is its engineering truck, when possessing shock-absorbing function, can also adjust in real time body gesture, overcome the rollover tendency power that vehicle has when turning or walk in the first-class operating mode in the road surface of inclination, prevent vehicle rollover, improving vehicle security energy, improve car load driver comfort, is the technical problems to be solved in the utility model.
Utility model content
Technical problem to be solved in the utility model is, a kind of anti-rollover hydraulic shock-absorption system is provided, when possessing shock-absorbing function, can also adjust in real time body gesture, overcome the rollover tendency power that vehicle has when turning or walk in the first-class operating mode in the road surface of inclination, prevent vehicle rollover, improve vehicle security energy, improve car load driver comfort.The utility model also provides a kind of engineering truck.
In view of this, the utility model provides a kind of anti-rollover hydraulic shock-absorption system, comprising: the first shock mitigation system and the second shock mitigation system, and the first shock mitigation system comprises: the first damping oil cylinder 1, piston rod external part is hinged in vehicle bridge, and the other end is hinged on vehicle frame; The first control cock 11, is positioned at pressure oil-source oil-feed port; The first shutoff valve 10, between the first control cock 11 and the first damping oil cylinder 1 rod chamber oil circuit; The 3rd control cock 5, is connected with the first damping oil cylinder 1 rod chamber; The first one-way throttle valve 2, is connected with the first damping oil cylinder 1 rodless cavity; The first energy storage 4, between the first one-way throttle valve 2 and the first actuator port A1 of the 3rd control cock 5; The 3rd one-way throttle valve 3, between the first one-way throttle valve 2 and the 3rd control cock 5 first guide's hydraulic fluid port S1; The second shock mitigation system comprises: the second damping oil cylinder 9, and piston rod external part is hinged in vehicle bridge, and the other end is hinged on vehicle frame; The second control cock 13, is positioned at pressure oil-source oil-feed port; The second shutoff valve 12, between the second control cock 13 and the second damping oil cylinder 9 rod chamber oil circuits; The 3rd control cock 5, is connected with the second damping oil cylinder 9 rod chambers; The second one-way throttle valve 8, is connected with the second damping oil cylinder 9 rodless cavities; The second energy storage 6, between the second one-way throttle valve 8 and the second actuator port A2 of the 3rd control cock 5; The 4th one-way throttle valve 7, between the second one-way throttle valve 8 and the 3rd control cock 5 second guide's hydraulic fluid port S2.
In this technical scheme, when hydraulic efficiency pressure system is started working, first open the first shutoff valve 10 and the second shutoff valve 12, the first control cock 11 and the second control cock 13 obtain electric, pressure oil-source P is to system fuel feeding, when fluid is full of after system, the first shutoff valve 10 and the second shutoff valve 12 are closed, anti-rollover hydraulic shock-absorption system becomes closed fhdraulic system, hydraulic oil transmits between the first shock mitigation system and the second shock mitigation system, in the process of anti-rollover hydraulic shock-absorption system works, do not need the hydraulic oil source that provides extra.
Work as Ackermann steer angle, if vehicle be take the first damping oil cylinder 1 as inner side turning, the trend that oriented the second damping oil cylinder 9 one sides of vehicle are tumbled under the effect of centnifugal force, the second damping oil cylinder 9 is retracted at the effect lower piston rod pressurized of centnifugal force, the hydraulic oil that pressurized flows out from the second damping oil cylinder 9 rodless cavities is stored into the second energy storage 6 after one-way throttle valve 8, when the difference of pressure at the 3rd control cock 5 first guide's hydraulic fluid port S1 and second guide's hydraulic fluid port S2 place reaches setting pressure difference, the main valve plug that promotes the 3rd control cock 5 moves, the first shock mitigation system and the second shock mitigation system conducting, hydraulic oil in the second damping oil cylinder 9 rodless cavities is through the second one-way throttle valve 8, the 3rd control cock 5 flows into the rod chamber of the first damping oil cylinder 1, simultaneously, the second energy storage 6 also discharges the energy of storage, together to the rod chamber fuel feeding of the first damping oil cylinder 1, make the piston rod fast retractile of the first damping oil cylinder 1, adjust body gesture, reach the effect that prevents that vehicle from tumbling to the second damping oil cylinder 9 one sides.When vehicle be take the second damping oil cylinder 9 while turning as inner side, principle of work with take the first damping oil cylinder 1 and as inner side, turn unanimously, repeat no more herein.
When the instantaneous earth bulge of vehicle process, for example the wheel of the first damping oil cylinder 1 one sides is instantaneous through earth bulge, the piston rod pressurized of the first damping oil cylinder 1 is retracted, the high pressure oil of the first damping oil cylinder 1 rodless cavity enters the first energy storage 4 through first one-way throttle valve 2 parts and stores, another part flows into the first pilot port S1 of the 3rd control cock 5 after the 3rd one-way throttle valve 3, the hysteresis quality of bringing due to the existence of the 3rd one-way throttle valve 3, make the instantaneous pressurized of the first damping oil cylinder 1 can't be reacted to rapidly the main valve plug of the 3rd control cock 5 and promote valve core movement connection first, the second shock mitigation system, therefore can realize the independent damping of two shock mitigation systems, adapt to severe ground operating mode, be reduced in the possibility of turning on one's side in poor road conditions.If there is no the 3rd one-way throttle valve 3, pressurized during the first damping oil cylinder 1 process earth bulge can be reacted to rapidly the 3rd control cock 5 main valve plugs and be communicated with first, second shock mitigation system, the first damping oil cylinder 1 rodless cavity is communicated with the second damping oil cylinder 9 rod chambers, cause the piston rod of the second damping oil cylinder 9 to be retracted, vehicle integral body, towards the second damping oil cylinder 9 lopsidedness, is brought rollover risk.Instantaneous when the earth bulge when the second damping oil cylinder 9 one sides, because the existence of the 4th one-way throttle valve 7 also makes system possess identical anti-rollover function, principle of work is consistent while passing through projection with the first damping oil cylinder 1, repeats no more herein.
This anti-rollover hydraulic shock-absorption system, simple in structure, when realizing shock-absorbing function, can also adjust in real time body gesture, overcome the rollover tendency power that vehicle has when turning or walk in the first-class operating mode in the road surface of inclination, prevent vehicle rollover, improve vehicle security energy, improve car load driver comfort.
Preferably, the first one-way throttle valve 2, the second one-way throttle valve 8, the 3rd one-way throttle valve 3 and the 4th one-way throttle valve 7 restriction sizes are all adjustable.
Preferably, the first control cock 11, the second control cock 13 and the 3rd control cock 5 are solenoid electric valve.
Preferably, the 3rd control cock 5 is pilot proportional reversing valve.
Preferably, the first control cock 11 and the second control cock 13 are solenoid directional control valve.
Preferably, the rodless cavity of the rodless cavity of the first damping oil cylinder 1 and the second damping oil cylinder 9 includes retracing spring.
Preferably, the first damping oil cylinder 1 and the second damping oil cylinder 9 are installed between vehicle frame and steeraxle.
Preferably, the first damping oil cylinder 1 and the second damping oil cylinder 9 are installed between vehicle frame and drive axle.
Preferably, the first damping oil cylinder 1 and the second damping oil cylinder 9 are symmetricly set on car body both sides.
The utility model also provides a kind of engineering truck, comprises the anti-rollover hydraulic shock-absorption system described in above-mentioned arbitrary technical scheme.Obviously, this project vehicle has whole beneficial effects of above-mentioned anti-rollover hydraulic shock-absorption system, does not repeat them here.
In sum, the anti-rollover hydraulic shock-absorption system that the utility model provides, simple in structure, when realizing shock-absorbing function, can also adjust in real time body gesture, overcome the rollover tendency power that vehicle has when turning or walk in the first-class operating mode in the road surface of inclination, prevent vehicle rollover, improve vehicle security energy, improve car load driver comfort.
Accompanying drawing explanation
Fig. 1 is the hydraulic principle schematic diagram of anti-rollover hydraulic shock-absorption system described in the utility model one embodiment.
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection domain of the present utility model is not subject to the restriction of following public specific embodiment.
Fig. 1 shows the hydraulic principle of anti-rollover hydraulic shock-absorption system one embodiment that the utility model provides.As shown in fig. 1, P is pressure oil-source, when the first control cock 11 and the second control cock 13 electric after, the first shutoff valve 10 and the second shutoff valve 12 are opened, pressure oil-source P is to hydraulic pressure shock mitigation system fuel feeding, when system is full of after hydraulic oil, close the first shutoff valve 10 and the second shutoff valve 12, system becomes closed fhdraulic system.The first damping oil cylinder 1, the first one-way throttle valve 2, the first energy storage 4, the 3rd one-way throttle valve 3 and the 3rd control cock 5 form the first shock mitigation system; The second damping oil cylinder 9, the second one-way throttle valve 8, the second energy storage 6, the 4th one-way throttle valve 7 and the 3rd control cock 5 form the second shock mitigation system.
Work as Ackermann steer angle, suppose that vehicle take the first damping oil cylinder 1 and turn as inner side, the trend that oriented the second damping oil cylinder 9 one sides of vehicle are tumbled under the effect of centnifugal force, the second damping oil cylinder 9 is retracted at the effect lower piston rod pressurized of centnifugal force, rodless cavity pressure raises, high pressure oil major part after one-way throttle valve 8 that pressurized flows out from the second damping oil cylinder 9 rodless cavities is stored into the second energy storage 6, some is the second pilot port S2 to the 3rd control cock 5 through the 4th check valve 7, when the 3rd control cock 5 first pilot port S1 and the second pilot port S2 difference of pressure reach while setting pressure difference, the main valve plug that promotes the 3rd control cock 5 moves, the first shock mitigation system and the second shock mitigation system conducting, two damping oil cylinders form cross connection, high pressure oil in the second damping oil cylinder 9 rodless cavities flows into the rod chamber of the first damping oil cylinder 1, now, the second energy storage 6 also discharges the energy of storage, together to the rod chamber fuel feeding of the first damping oil cylinder 1, the piston rod of the first damping oil cylinder 1 is retracted, the rollover possibility that balance the second damping oil cylinder is retracted and brought, reach the effect that prevents that vehicle from tumbling to the second damping oil cylinder 9 one sides.Left and right turning operating mode function is consistent, therefore be not repeated in this description.
Owing to having respectively the 3rd one-way throttle valve 3 of the first shock mitigation system and the 4th one-way throttle valve 7 of the second shock mitigation system in the 3rd control cock 5 pilot port, the instantaneous pressurized of damping oil cylinder moves because the existence of flow regulating valve on the 3rd control cock 5 guide's oil circuits can not promote spool immediately, but can realize monolateral damping under the combination of the first one-way throttle valve 2 and the first energy storage 4 or under the combination of the second one-way throttle valve 8 and the second energy storage 6, adapt to severe ground operating mode.
For example, when the wheel of the first damping oil cylinder 1 side is instantaneous during through an earth bulge, the piston rod pressurized of the first damping oil cylinder 1 is retracted, the high pressure oil of the first damping oil cylinder 1 rodless cavity enters the first energy storage 4 through first one-way throttle valve 2 parts and stores, another part flows into the first pilot port S1 of the 3rd control cock 5 after the 3rd one-way throttle valve 3, the existence of the 3rd one-way throttle valve 3, make the instantaneous pressurized of the first damping oil cylinder 1 can't be reacted to rapidly the main valve plug of the 3rd control cock 5 and promote valve core movement connection first, the second shock mitigation system, therefore can not force the piston rod of the second damping oil cylinder 9 to be retracted, having reduced vehicle can be instantaneous through an earth bulge because of the tire of the first damping oil cylinder 1 side, and make vehicle to the risk of the second damping oil cylinder 9 side rollovers, the damping oil cylinder that has overcome in prior art hydraulic shock-absorption system opposite side wheel side when monolateral wheel is through projection foreign matter is retracted, the problem of aggravation vehicle rollover risk.
In like manner, during the instantaneous process of the wheel of the second damping oil cylinder 9 one sides earth bulge, can reduce vehicle to the risk of the first damping oil cylinder 1 one sides rollovers, repeat no more herein.
The hydraulic efficiency pressure system providing in this embodiment is closed fhdraulic system, but in the specific embodiment, be not limited to the scheme of closed fhdraulic system, can also adopt open type hydraulic system, the specific embodiment is: remain off valve 10 and shutoff valve 12 are often opened, by adopting prefill valve module between system oil sources and control cock 11, control cock 13 to system fuel feeding, the real-time required fluid of replenishment system, prevent that the system pressure causing because of factors such as leakage, temperature traverses from changing, thereby improve the stability of system.
The modularity of the anti-rollover hydraulic shock-absorption system providing due to the utility model is strong, can be with other device as combinations such as suspension, and raising product overall performance.When suspension is combined, the damper mechanism in the alternative prior art suspension of damping oil cylinder in native system, makes product comprehensively have the damping of suspension and anti-rolling performance.
In sum, the anti-rollover hydraulic shock-absorption system that the utility model provides, simple in structure, when realizing shock-absorbing function, can also adjust in real time body gesture, overcome the rollover tendency power that vehicle has when turning or walk in the first-class operating mode in the road surface of inclination, prevent vehicle rollover, improve vehicle security energy, improve car load driver comfort, and because system modularity is strong, can, with other device as combinations such as suspension, improve product overall performance.The utility model also provides a kind of engineering truck.
In the utility model, term " first ", " second ", " the 3rd ", " the 4th " be the object for describing only, and can not be interpreted as indication or hint relative importance.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an anti-rollover hydraulic shock-absorption system, is characterized in that, comprising: the first shock mitigation system and the second shock mitigation system,
Described the first shock mitigation system comprises:
The first damping oil cylinder (1), piston rod external part is hinged in vehicle bridge, and the other end is hinged on vehicle frame;
The first control cock (11), is positioned at pressure oil-source oil-feed port;
The first shutoff valve (10), is positioned between the first control cock (11) and the first damping oil cylinder (1) rod chamber oil circuit;
The 3rd control cock (5), is connected with the first damping oil cylinder (1) rod chamber;
The first one-way throttle valve (2), is connected with the first damping oil cylinder (1) rodless cavity;
The first energy storage (4), is positioned between the first one-way throttle valve (2) and the first actuator port A1 of the 3rd control cock (5);
The 3rd one-way throttle valve (3), is positioned between the first one-way throttle valve (2) and the 3rd control cock (5) first guide's hydraulic fluid port S1;
Described the second shock mitigation system comprises:
The second damping oil cylinder (9), piston rod external part is hinged in vehicle bridge, and the other end is hinged on vehicle frame;
The second control cock (13), is positioned at pressure oil-source oil-feed port;
The second shutoff valve (12), is positioned between the second control cock (13) and the second damping oil cylinder (9) rod chamber oil circuit;
The 3rd control cock (5), is also connected with the second damping oil cylinder (9) rod chamber;
The second one-way throttle valve (8), is connected with the second damping oil cylinder (9) rodless cavity;
The second energy storage (6), is positioned between the second one-way throttle valve (8) and the second actuator port A2 of the 3rd control cock (5);
The 4th one-way throttle valve (7), is positioned between the second one-way throttle valve (8) and the 3rd control cock (5) second guide's hydraulic fluid port S2.
2. anti-rollover hydraulic shock-absorption system according to claim 1, it is characterized in that, the first one-way throttle valve (2), the second one-way throttle valve (8), the 3rd one-way throttle valve (3) and the 4th one-way throttle valve (7) restriction size are all adjustable.
3. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the first control cock (11), the second control cock (13) and the 3rd control cock (5) are solenoid electric valve.
4. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the 3rd control cock (5) is pilot proportional reversing valve.
5. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the first control cock (11) and the second control cock (13) are solenoid directional control valve.
6. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the rodless cavity of the first damping oil cylinder (1) and the second damping oil cylinder (9) include retracing spring.
7. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the first damping oil cylinder (1) and the second damping oil cylinder (9) are installed between vehicle frame and steeraxle.
8. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the first damping oil cylinder (1) and the second damping oil cylinder (9) are installed between vehicle frame and drive axle.
9. anti-rollover hydraulic shock-absorption system according to claim 1, is characterized in that, the first damping oil cylinder (1) and the second damping oil cylinder (9) are symmetricly set on car body both sides.
10. an engineering truck, is characterized in that, comprises anti-rollover hydraulic shock-absorption system as in one of claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594092.1U CN203543573U (en) | 2013-09-25 | 2013-09-25 | Anti-rollover hydraulic damping system and engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594092.1U CN203543573U (en) | 2013-09-25 | 2013-09-25 | Anti-rollover hydraulic damping system and engineering vehicle |
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| Publication Number | Publication Date |
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| CN203543573U true CN203543573U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320594092.1U Expired - Lifetime CN203543573U (en) | 2013-09-25 | 2013-09-25 | Anti-rollover hydraulic damping system and engineering vehicle |
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| Country | Link |
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| CN (1) | CN203543573U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608574A (en) * | 2014-12-03 | 2015-05-13 | 中国北方车辆研究所 | Vehicle side-turn-prevention suspension device |
| CN106627025A (en) * | 2015-10-30 | 2017-05-10 | 北汽福田汽车股份有限公司 | Pickup suspension system |
| CN106904057A (en) * | 2017-04-12 | 2017-06-30 | 管中林 | A kind of Insecticide sprayer with stabilization interconnection suspension |
| CN113427958A (en) * | 2021-06-22 | 2021-09-24 | 南京宝地梅山产城发展有限公司 | Multi-functional transport vechicle damping device in mine |
-
2013
- 2013-09-25 CN CN201320594092.1U patent/CN203543573U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608574A (en) * | 2014-12-03 | 2015-05-13 | 中国北方车辆研究所 | Vehicle side-turn-prevention suspension device |
| CN106627025A (en) * | 2015-10-30 | 2017-05-10 | 北汽福田汽车股份有限公司 | Pickup suspension system |
| CN106904057A (en) * | 2017-04-12 | 2017-06-30 | 管中林 | A kind of Insecticide sprayer with stabilization interconnection suspension |
| CN113427958A (en) * | 2021-06-22 | 2021-09-24 | 南京宝地梅山产城发展有限公司 | Multi-functional transport vechicle damping device in mine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN SANYI PORT EQUIPMENT CO., LTD. Free format text: FORMER OWNER: KM GROUP CO., LTD. Effective date: 20150611 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150611 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: HUNAN SANYI PORT FACILITIES CO.,LTD. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee before: SANY GROUP Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |