CN102720795A - Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle - Google Patents
Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle Download PDFInfo
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- CN102720795A CN102720795A CN2012101926361A CN201210192636A CN102720795A CN 102720795 A CN102720795 A CN 102720795A CN 2012101926361 A CN2012101926361 A CN 2012101926361A CN 201210192636 A CN201210192636 A CN 201210192636A CN 102720795 A CN102720795 A CN 102720795A
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Abstract
The invention discloses a hydro-pneumatic spring for amphibious vehicles and a hydraulic regulating device for the hydro-pneumatic spring for amphibious vehicles, and particularly relates to a hydro-pneumatic spring allowing for wheel release on land, wheel retracting in water, vehicle height control, and automatic change of pressure and supporting force for the vehicles. The hydro-pneumatic spring uses an inert gas as an elastic medium and oil as a force transfer medium and comprises a gas spring and a hydraulic cylinder servicing as a shock absorber. A hydro-pneumatic separate spring consists of a gas chamber, an oil chamber and a floating piston. Oil is sucked in from a piston rod and enters the oil chamber B through a damping valve to push a piston so that the gas is compressed or expanded, and elastic action is achieved. The shock absorber consists of a cylinder barrel, a piston and the damping valve. Under the action of the damping valve, energy can be attenuated effectively, the shock absorber is rebalanced, and shock absorption is achieved. In addition, oil intake of an oil inlet can be regulated to quickly and accurately change position of the piston, so that extension length of the piston rod is changed to change wheel state, and retracting and release of wheels and range adjustment of vehicle height are achieved.
Description
Technical field
The invention belongs to the hydraulic machinery technical field; Relate to a kind of hydro-pneumatic spring and hydraulic regulating device thereof that is used for amphibious vehicle, specifically relate to a kind of wheel of can realizing and put down, pack up, control in the water vehicle body height in the land, change the hydro-pneumatic spring and the hydraulic regulating device thereof of pressure and support force automatically.Be mainly used in the adjusting and the decay body vibrations that change wheel position, vehicle body height, with the Security that improves land locomotion and smoothness, the action resistance that reduces to go in the water.
Background technique
In the prior art, suspension is the assembly of all power transmission connection sets between vehicle frame (or monocoque body) and the vehicle bridge (or wheel).General suspension system is made up of elastic element, damping member and guide mechanism etc.Hydro-pneumatic spring is as a kind of elastic element in the suspension system; Be through charging into hydraulic oil in the cylinder as sealing medium and power transmission medium; Through charging into pressurized gas in the cylinder as stressed and working medium; Hydraulic oil is connected with pressurized gas, directly bears extraneous exciting through installation piston and piston rod in the sealing cylinder.As spring assembly, form vibration damper with pressurized gas, make hydro-pneumatic spring have stiffness variable and adaptive damping characteristic, thereby obtain the vehicle driving smoothness with orifice valve, cylinder body and piston.
But existing hydro-pneumatic spring comes with some shortcomings:
1. only realize that through outside oil circuit the adjusting of vehicle body height do not consider the hydro-pneumatic spring self structure, and because the restriction of mounting point, adjustable extent is limited.As application number for the CN201110242327.6 denomination of invention for " a kind of adjusting apparatus for height of vehicle and method " based on hydro-pneumatic spring through hydro-pneumatic spring, blocking-valve, charge and discharge fuel tap, high pressure oil pump, fuel tank etc. and form circulating oil paths, realize the free adjustment of height in limited range.
2. become rigidity preferably, become damping characteristic but can not realize the adjusting of vehicle body height or governing speed is slow excessively, regulation range is too small though have, and be mostly the modified model hydro-pneumatic spring of parallel bars, complex structure, seal request height.Is that " the automobile-used hydro-pneumatic spring of a kind of rigidity and Adjustable Damping " is through increasing the adjustable extent that additional volume chamber, hydraulic control valve and Pneumatic valve etc. improve rigidity and damping like application number for the CN201110314016.6 denomination of invention; Amount through the Pneumatic valve control gaseous is regulated vehicle body height, realizes that complicated, control requires high.
3. even possess both effects simultaneously, inner member is too many, complex structure, and cost is too high, and energy consumption is big, and reliability is general.Is " hydro-pneumatic spring " realized highly adjusting and ability through interior outer shell, Decompression valves, pressure release driving spring, unidirectional turnover fuel tap, control valve, tie rod, spring etc. absorption, transmission like application number for the CN200410045416.1 denomination of invention.
Summary of the invention
The objective of the invention is characteristic, a kind of hydro-pneumatic spring and hydraulic regulating device thereof that is used for amphibious vehicle is provided to the quick conversion of wheel condition in the problems referred to above and the amphibious vehicle running process.This device not only has the effect of elastic element and vibration damper preferably; But also can carry out the ACTIVE CONTROL adjusting to vehicle body height and running state of wheels apace; And realize that wheel packs up in order to solve vehicle and in water, to go; Reach the annex resistance that state produced that reduces to go in the amphibious vehicle water because of wheel, realize the rapidity of going in the water; Can satisfy Security, the smoothness of vehicle land locomotion again.
In order to achieve the above object, the present invention realizes that the technological scheme that purpose is taked is:
A kind of hydro-pneumatic spring that is used for amphibious vehicle; Comprise that an end is fixedly connected with an end of cylinder head 23, the other end is provided with the cylinder barrel 19 of cylinder cap 15, piston 10 and piston rod 18; One end of said piston rod 18 is set with and the close-fitting piston 10 of the inwall of said cylinder barrel 19; The other end stretches out cylinder cap 15 and is externally connected with earrings 13, and the other end of its said cylinder head 23 also is connected with the cylinder body 4 that is provided with floating piston 3 in, and said cylinder head 23 has the coaxial shoulder hole of large, medium and small diameter from left to right successively; Wherein large diameter hole with communicate with said cylinder barrel 19; Small diameter bore is equipped with an orifice valve 24 and communicates with cylinder body 4, has the filler opening a6 that communicates with middle diametric hole on the periphery of vertical centering control diametric hole axis, and the periphery of corresponding filler opening a6 is provided with an earrings; Said cylinder barrel 19 has gas compartment A and fluid chamber B from right to left near also being provided with a filler opening b12 on the periphery of cylinder cap 15 1 ends between said floating piston 3 and the said cylinder body 4; Have rodless cavity C and rod chamber D between said piston 10 and the cylinder barrel 19 from right to left; Wherein gas compartment A is pressurized gas, and the end face of gas compartment A is provided with an inflation plug screw 1, and fluid chamber B, rodless cavity C and rod chamber D are arranged all is hydraulic oil.
Also be provided with a guide sleeve 16 near cylinder cap 15 in the cylinder barrel 19 of the above, be provided with seal ring 17 respectively between guide sleeve 16 and cylinder barrel 19 and the piston rod 18.
Be provided with seal ring respectively between above-mentioned floating piston 3 and the cylinder body 4 and between piston 10 and the cylinder barrel 19 and between piston rod 18 and piston 10 and the cylinder cap 15.
In order to achieve the above object, the present invention realizes that another technological scheme that purpose is taked is:
A kind of hydraulic regulating device that is used for the hydro-pneumatic spring of amphibious vehicle; Comprise oil hydraulic pump 1-1, Y type selector valve 1-2, bidirectional hydraulic lock 1-3; Accumulator 1-5; Series flow control valve 1-6 and relief valve 1-7 go up end interfaces and link to each other with filler opening a6 with the said filler opening b12 that is provided with that is used for the hydro-pneumatic spring of amphibious vehicle respectively for two among the said bidirectional hydraulic lock 1-3, and said accumulator 1-5 is parallel on the filler opening a6 with the upper right interface that said series flow control valve 1-6 is in series afterwards with said bidirectional hydraulic lock 1-3; Said Y type selector valve 1-2 is installed on two following end interfaces of said bidirectional hydraulic lock 1-3, and said Y type selector valve 1-2 bottom righthand side interface directly connects fuel tank; Said oil hydraulic pump 1-1 and said relief valve 1-7 are parallel to end interface under the left side of said Y type selector valve 1-2.
A kind of hydro-pneumatic spring and hydraulic regulating device thereof that is used for amphibious vehicle of the present invention has following advantage and beneficial effect:
Easy, the safety of mechanism of the present invention.With fluid be working medium make reaction velocity sooner, sensitiveer.Especially through floating piston gas is separated with fluid, to adapt to the characteristics that piston rod is subject to exciting, it is stable more, reliable to compare diaphragm of rubber formula or oil gas direct contact type.And part fluid can get into accumulator through series flow control valve, plays the dual fail-safe effect, thereby, can further reduce spring rate, improve damping characteristic.And the hydro-pneumatic spring cylinder barrel is provided with two filler openings, can change the hydraulic pressure oil mass of rod chamber D and rodless cavity C in the cylinder barrel, the effect that the realization vehicle stretches out at the land piston rod, piston rod is packed up in the water.
Description of drawings
Fig. 1 is a system architecture schematic representation of the present invention;
1. inflation plug screw, 2. gas compartment A, 3. floating piston, 4. cylinder body, 5. fluid chamber B, 6. filler opening a among the figure; 7. check ring, the 8. collar, 9. snap ring, 10. piston, 11. ○Xing Mifengquans, 12. filler opening b; 13. earrings, 14. dust rings, 15. cylinder caps, 16. guide sleeves, 17. seal rings, 18. piston rods; 19. cylinder barrel, 20.Y seal ring, 21. back-up rings, 22. support rings, 23. cylinder heads, 24. orifice valves; 1-1. oil hydraulic pump, 1-2.Y type selector valve, 1-3. bidirectional hydraulic lock, 1-4. hydro-pneumatic spring, 1-5. accumulator, 1-6. series flow control valve, 1-7. relief valve.
Embodiment
Below in conjunction with accompanying drawing a kind of hydro-pneumatic spring and hydraulic regulating device thereof that is used for amphibious vehicle of the present invention is described in detail:
As shown in Figure 1; A kind of hydro-pneumatic spring that is used for amphibious vehicle; Comprise that an end is fixedly connected with an end of cylinder head 23, the other end is provided with the cylinder barrel 19 of cylinder cap 15, piston 10 and piston rod 18; One end of said piston rod 18 is set with and the close-fitting piston 10 of the inwall of said cylinder barrel 19, and piston 10 is fixed on the piston rod 18 through check ring 7, the collar 8 and snap ring 9.○Xing Mifengquan 11 is loaded on the piston rod 18, guarantees the sealing of piston rod 18 and piston 10.Piston 10 contacts with cylinder barrel 19 through support ring 22, and guarantees the sealing of piston 10 and cylinder barrel 19 through Y seal ring 20; The other end of piston rod 18 is docile and obedient that preface is passed guide sleeve 16, cylinder cap 15 is connected with earrings 13, wherein is provided with seal ring 17 respectively between guide sleeve 16 and cylinder barrel 19 and the piston rod 18.The other end of said cylinder head 23 also is connected with the cylinder body 4 that is provided with floating piston 3 in; Said cylinder head 23 has the coaxial shoulder hole of large, medium and small diameter from left to right successively; Wherein large diameter hole with communicate with said cylinder barrel 19; Small diameter bore is equipped with an orifice valve 24, and (in the orifice valve 24 throttle valve plate is arranged, throttle valve plate comes control flow rate according to pressure and speed, forms damping force.) communicate with cylinder body 4, having the filler opening a6 that communicates with middle diametric hole on the periphery of vertical centering control diametric hole axis, the periphery of corresponding filler opening a6 is provided with an earrings; Said cylinder barrel 19 has gas compartment A and fluid chamber B from right to left near also being provided with a filler opening b12 on the periphery of cylinder cap 15 1 ends between said floating piston 3 and the said cylinder body 4; Have rodless cavity C and rod chamber D between said piston 10 and the cylinder barrel 19 from right to left, and two chamber pressures equate.Said gas compartment A is pressurized gas, and the end face of gas compartment A is provided with an inflation plug screw 1, and gas compartment A charges into high-pressure inert gas according to the vehicle static load through inflation plug screw 1 and forms a gas compartment, and the pressure of gas compartment A and fluid chamber B equates.Fluid chamber B, rodless cavity C and rod chamber D are arranged all is hydraulic oil.
As shown in Figure 1, a kind of hydraulic regulating device that is used for the hydro-pneumatic spring of amphibious vehicle of the present invention comprises fuel tank, oil hydraulic pump 1-1, Y type selector valve 1-2, bidirectional hydraulic lock 1-3, hydro-pneumatic spring 1-4, accumulator 1-5, series flow control valve 1-6 and relief valve 1-7.Two hydraulic fluid port a among the said hydro-pneumatic spring 1-4, b respectively with bidirectional hydraulic lock 1-3 in two go up end interfaces and link to each other, accumulator 1-5 and series flow control valve 1-6 are in series, and are parallel on the filler opening a with the upper right interface of bidirectional hydraulic lock 1-3.Y type selector valve 1-2 is installed on two following end interfaces of bidirectional hydraulic lock 1-3, and Y type selector valve bottom righthand side interface directly connects fuel tank.Oil hydraulic pump 1-1 and relief valve 1-7 are parallel to end interface under the left side of Y type selector valve.
A kind of working principle that is used for the hydro-pneumatic spring and the hydraulic regulating device thereof of amphibious vehicle of the present invention:
When amphibious vehicle during in land locomotion, piston rod need stretch out, and Y type selector valve 1-2 is positioned at right position, and valve be that a left side leads to; Oil hydraulic pump is pressed into filler opening a with hydraulic oil through bidirectional hydraulic lock 1-3, because the effect of pressure and the incompressibility of fluid, rodless cavity C begins oil-feed; Hydraulic oil will promote piston rod 18 to left movement, discharge the part hydraulic oil among the rod chamber D, equate up to 2 chamber pressures; Thereby form certain equipoise, (when selector valve 1-2 was in meta, relief valve 1-7 was in open mode to make Y type selector valve recover meta; Hydraulic oil is directly got back to fuel tank), make bidirectional hydraulic lock 1-3 locked, close oil circuit.When amphibious vehicle went in water, piston rod needed to shrink, and Y type selector valve 1-2 is positioned at position, a left side; Valve is right logical, and oil hydraulic pump is pressed into filler opening b with hydraulic oil through bidirectional hydraulic lock 1-3, and rod chamber D begins oil-feed; Hydraulic oil will promote piston rod 18 and move right, and discharge the part hydraulic oil among the rodless cavity C, after piston 10 arrives certain position; Make Y type selector valve recover meta again, close oil circuit.
Vehicle is when land locomotion, and piston rod 18 is in the state of stretching out, when the spring pressurized, when piston moves to right; Rodless cavity C volume diminishes, and cavity pressure increases, wherein most fluid or get into fluid chamber B through orifice valve 24; Along with increasing of fluid, pressure is greater than the pressure in the reservoir chamber 2, because the compressibility of gas in the reservoir chamber 5; Hydraulic oil will promote floating piston 3 and move right, thereby compressed inert fully absorbs the impact capacity from ground with the spring rate that produces high pressure; In addition some fluid gets into series flow control valve 1-6 through filler opening 6, and by after the speed governing, the fluid safety of speed stabilizing flow setting type gets into accumulator 1-5, store the part ability, and second overlaps protective action.Along with external force is recovered static balancing, the pressure of reservoir chamber's 2 mesohigh inert gases is constant, and pressure is constant among the rodless cavity C; And pressure diminishes among the rod chamber D, and piston 10 is moved to the left, and it is big that rodless cavity C volume becomes; Cavity pressure reduces, because the effect of pressure, gas compartment A is with releasability; Promote floating piston 3 and be moved to the left, make the fluid among the B of fluid chamber get into rodless cavity C through orifice valve 24, while accumulator 1-5 is the release portion energy also; Fluid gets into rodless cavity C through series flow control valve 1-6, thereby makes piston 10 return to relative equipoise.
Claims (5)
1. hydro-pneumatic spring that is used for amphibious vehicle; Comprise that an end is fixedly connected with an end of cylinder head (23); The other end is provided with the cylinder barrel (19) of cylinder cap (15); Piston (10) and piston rod (18), an end of said piston rod (18) are set with the close-fitting piston of inwall (10) with said cylinder barrel (19), and the other end stretches out cylinder cap (15) and is externally connected with earrings (13); It is characterized in that: the other end of said cylinder head (23) also is connected with the cylinder body (4) that is provided with floating piston (3) in; Said cylinder head (23) has the coaxial shoulder hole of large, medium and small diameter from left to right successively, and wherein large diameter hole communicates with said cylinder barrel (19), and small diameter bore is equipped with an orifice valve (24) and communicates with cylinder body (4); Have the filler opening a (6) that communicates with middle diametric hole on the periphery of vertical centering control diametric hole axis, the periphery of corresponding filler opening a (6) is provided with an earrings; Said cylinder barrel (19) has gas compartment A and fluid chamber B from right to left near also being provided with a filler opening b (12) on the periphery of cylinder cap (15) one ends between said floating piston (3) and the said cylinder body (4); Have rodless cavity C and rod chamber D from right to left between said piston (10) and the cylinder barrel (19).
2. the hydro-pneumatic spring that is used for amphibious vehicle according to claim 1 is characterized in that: described gas compartment A is pressurized gas, and the end face of gas compartment A is provided with an inflation plug screw (1), and described fluid chamber B, rodless cavity C and rod chamber D are hydraulic oil.
3. the hydro-pneumatic spring that is used for amphibious vehicle according to claim 1; It is characterized in that: also be provided with a guide sleeve (16) near cylinder cap (15) in the described cylinder barrel (19), be provided with seal ring (17) respectively between guide sleeve (16) and cylinder barrel (19) and the piston rod (18).
4. the hydro-pneumatic spring that is used for amphibious vehicle according to claim 1 is characterized in that: be provided with seal ring respectively between described floating piston (3) and the cylinder body (4) and between piston (10) and the cylinder barrel (19) and between piston rod (18) and piston (10) and the cylinder cap (15).
5. hydraulic regulating device that is used for the hydro-pneumatic spring of amphibious vehicle according to claim 1; Comprise oil hydraulic pump (1-1); Y type selector valve (1-2); Bidirectional hydraulic lock (1-3), accumulator (1-5), series flow control valve (1-6) and relief valve (1-7); It is characterized in that: two last end interfaces are connected with filler opening b (12) and the filler opening a (6) that the said hydro-pneumatic spring that is used for amphibious vehicle is provided with respectively in the said bidirectional hydraulic lock (1-3), and said accumulator (1-5) is in series afterwards with said series flow control valve (1-6) and the upper right interface of said bidirectional hydraulic lock (1-3) is parallel on the filler opening a (6); Said Y type selector valve (1-2) is installed on two following end interfaces of said bidirectional hydraulic lock (1-3), and said Y type selector valve (1-2) bottom righthand side interface directly connects fuel tank; Said oil hydraulic pump (1-1) and said relief valve (1-7) are parallel to end interface under the left side of said Y type selector valve (1-2).
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| CN2012101926361A CN102720795A (en) | 2012-06-12 | 2012-06-12 | Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle |
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| CN2012101926361A CN102720795A (en) | 2012-06-12 | 2012-06-12 | Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle |
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| CN104369639A (en) * | 2014-09-23 | 2015-02-25 | 北京理工大学 | Wheel-type amphibious vehicle retractable type oil gas suspension system and control method |
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| CN111824048B (en) * | 2019-04-15 | 2022-08-05 | 比亚迪股份有限公司 | Vehicle tire burst control method and device and vehicle |
| CN111824048A (en) * | 2019-04-15 | 2020-10-27 | 比亚迪股份有限公司 | Vehicle tire burst control method and device and vehicle |
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| CN112590479A (en) * | 2020-12-24 | 2021-04-02 | 东风越野车有限公司 | Amphibious vehicle overturning suspension structure and amphibious vehicle |
| CN114198364A (en) * | 2021-12-22 | 2022-03-18 | 北京理工大学重庆创新中心 | Composite load simulation test device and simulation test method thereof |
| CN114876998A (en) * | 2022-03-28 | 2022-08-09 | 吉林大学 | Intelligent damping cylinder for gas-liquid mixing mechanical joint |
| CN114876999A (en) * | 2022-04-06 | 2022-08-09 | 北京航天发射技术研究所 | Multi-cavity high-reliability hydro-pneumatic spring |
| CN114876999B (en) * | 2022-04-06 | 2024-04-05 | 北京航天发射技术研究所 | Multi-cavity high-reliability hydro-pneumatic spring |
| CN115008965A (en) * | 2022-04-25 | 2022-09-06 | 东风越野车有限公司 | Hydro-pneumatic spring assembly for retractable wheel of suspension |
| CN115234596A (en) * | 2022-07-28 | 2022-10-25 | 武汉创全域汽车科技有限公司 | Multi-rod single-piston hydro-pneumatic spring capable of transmitting torque |
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Application publication date: 20121010 |