CN102358132A - Device and method for adjusting vehicle height based on hydro-pneumatic spring - Google Patents
Device and method for adjusting vehicle height based on hydro-pneumatic spring Download PDFInfo
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- CN102358132A CN102358132A CN2011102423276A CN201110242327A CN102358132A CN 102358132 A CN102358132 A CN 102358132A CN 2011102423276 A CN2011102423276 A CN 2011102423276A CN 201110242327 A CN201110242327 A CN 201110242327A CN 102358132 A CN102358132 A CN 102358132A
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Abstract
The invention provides a device and a method for adjusting the vehicle height based on a hydro-pneumatic spring, belonging to the field of adjustment of the characteristics of a spring or a vibration damper and adjustment of the distance between a vehicle support surface and a spring suspension frame part. The device can be used for optionally adjusting the vehicle height in a set range, and contributes to remarkably improving the severe road surface passing performance, traveling stability, air drop and air transport adaptability and landmine protection performance of a vehicle. The adjusting device comprises the hydro-pneumatic spring, an upper transverse arm, a lower transverse arm, an upper limit, a lower limit, a locking valve, an oil filling/discharging valve, an oil tank and a high-pressure oil pump. The vehicle height is optionally adjusted by quantitatively filling high-pressure oil into the hydro-pneumatic spring. The adjusting device is used without changing the existing vehicle structure and influencing the vehicle performance, has low cost, is convenient for installing and adjusting the vehicle height, and has reliable safety performance.
Description
Technical field
The invention belongs to have adjustment spring or vibration-damper characterist, adjustment vehicle support surface and spring suspension partly between apart from the field, specifically relate to a kind of adjusting apparatus for height of vehicle and method based on hydro-pneumatic spring.
Background technology
Representative type wheeled car running gear is made up of inhibiting device about wheel, suspension system guiding mechanism, elastic element, damping element and the suspension.For the power actuated vehicle that the conventional suspension system is housed; Its bodywork height can't be regulated according to the load change situation, thus car load on a large scale and more frequent variation, can aggravate Tyte Wear; Increase tire drag; The variation of body gesture simultaneously can increase air resistance, influences vehicle operating stability, increases oil consumption; The variation of bodywork height can reduce the moving stroke of jumping on the wheel or jumping down, increases the breakdown probability of suspension, destroys traveling comfort, reduces the crossing ability of vehicle.Therefore, the overall height control system can improve many performances of vehicle, at automotive field application promise in clinical practice is arranged.
The method of overall height adjusting at present mainly contains three kinds: the control of parking level, the control of special driving cycle height and automatic horizontal control.The control of parking level is after stopping, and when lifting on the vehicle body when load minimizing on the car, control system can reduce bodywork height automatically, to reduce the load of suspension system; When the control of special driving cycle height is high vehicle speeds, initiatively reduce bodywork height, improving the road-holding property and the aerodynamic characteristic of driving a vehicle,, avoid and the colliding with of ground or suspension when vehicle ' during, the vehicle body that initiatively raises in the bigger road surface of uneven degree; Automatic horizontal control is that bodywork height is not influenced by load, keeps basicly stable, the attitude level; Improve travel safety; The modern vehicle car height controlling system has two kinds of hydraulic type and vapour-pressure types, and hydraulic type is used for the hydro-pneumatic spring suspension system, and vapour-pressure type is used for the air spring suspension system.
Hydro-pneumatic spring is a kind of special air bellow; Its elastic element is the unreactable gas that is enclosed in the work air chamber; Between gas and piston, introduce the transmission medium of fluid, play the effect of damping element simultaneously, the absorbed oscillation energy as power; Reduce body oscillating, improve the cross country power and the through performance of vehicle.Hydro-pneumatic spring has compact conformation, effectiveness in vibration suppression is obvious, natural frequency is low, be convenient to install and be convenient to carry out advantage such as overall height adjusting.
The vehicle of collocation hydro-pneumatic spring has the function that overall height is regulated mostly, promptly through external pressure apparatus, regulates the fluid volume in the hydro-pneumatic spring, and then carries out overall height and regulate.
Comprise about the adjusting apparatus for height of vehicle prior art:
Application number is CN97112348.9, the denomination of invention patent of invention for " adjusting apparatus for height of vehicle ", and the technical matters of its solution is can reasonably carry out necessary overall height to regulate, and improves the balance that automobile goes on the slow bend of express highway etc.Its technical scheme is: the overall height sensor is with respect to the bodywork height on chassis; Be taken into the detection output of overall height sensor in each cycle T; Have only when n surpasses the adjusting threshold value several times continuously in a plurality of cycles, just only in than the time t of cycle T much shorter, see control output off to the control cock mechanism that regulates curtain air pressure.The overall height sensor that contains in the scheme has increased the complexity and the cost of system.
Application number is that CN97112494.9, denomination of invention are the patent of invention of " adjusting apparatus for height of vehicle "; A kind of adjusting apparatus for height of vehicle is disclosed; It is to fall operation and overall height adjusting with the control cock of mechanical adjusting apparatus for height of vehicle; Control cock has and flows into terminal, lead-out terminal, emits terminal, signal terminal and mechanical displacement input mechanism, and when signal pressure was fed into the signal terminal of this control cock, the lower limit of expression lead-out terminal occlusion areas and higher limit were together to the direction change that reduces distance between axletree and the chassis; Vehicle body is fallen, carried out overall height in this position and regulate.
And for example application number is that CN98120646.8, denomination of invention are the patent of invention of " adjusting apparatus for height of vehicle of independent suspension type air suspension vehicle "; When vehicle stops, preventing that vehicle from too tilting near road surface and vehicle body more, the left and right sides air bellow that is located between the left and right wheels of chassis and independent suspension is supporting the chassis; The overall height control cock is located at the airline that connects air bellow and air bellow; Pressurized air in air bellow is given the emptying gas tank is provided with left and right sides overall height sensor, the overall height about its electrical between chassis and wheel; Controller is through calculating the aviation value of detected left and right sides overall height; Supply with or discharge pressurized air to air bellow, with control overall height control cock, the overall height a reference value about above-mentioned aviation value is become.This patent is to utilize vapour-pressure type air spring suspension system to regulate overall height.
Application number is that CN201010222799.0, denomination of invention are the application for a patent for invention of " height regulator for vehicle "; A kind of height regulator for vehicle is provided, by the spring lower seat parts that are supported on the threaded portion, the thin footpath of band on the wheel-side member, rotatable overall height setting nut constitutes on the above-mentioned body part with being supported on of being screwed of these spring lower seat parts; It has improved car load overall height setting range through placing all size adjustment cushion block.
Application number is that CN201010515934.0, denomination of invention are the application for a patent for invention of " the full-automatic mechanical-type overall height is regulated hydro pneumatic suspension "; Its technical scheme is: cylinder barrel under cylinder barrel and the hydro-pneumatic spring on hydro-pneumatic spring upper bracket, the hydro-pneumatic spring, three's formation cylinder body that is connected; Low pressure accumulator, high pressure accumulator and dash pot valve are external, are communicated with the corresponding interface on the hydro-pneumatic spring upper bracket; Piston rod, it slides up and down along inner wall of cylinder under the hydro-pneumatic spring; Adjust bar, it is a hollow stem, can slide up and down along the adjusting sleeve inwall, and the upper end is connected with adjust bar interface on the hydro-pneumatic spring upper bracket, and the lower end is provided with and imports valve and adjust bar oilhole, and lower sides is provided with draining hole and induction channels; Adjusting sleeve, it is a hollow stem, is fixed on the piston rod inwall, and coaxial with adjust bar and piston rod, two ends are provided with seal ring up and down, and its lower end is provided with delivery valve and adjusting sleeve oilhole.
The problem that above-mentioned overall height control system exists has: perhaps need on original vehicle, increase expensive sensing system and control system, increase the system complex degree, improve the vehicle cost; Perhaps the overall height control system in the practical application can only be adjusted to certain several setting height with overall height, can not realize that overall height is adjustable arbitrarily.
Therefore, on the basis of existing technology, invent a kind of low cost, high reliability, on to the less basis of original vehicle change, can realize overall height adjustable device arbitrarily, have realistic meaning.
Summary of the invention
The object of the invention is to provide a kind of overall height control system and a kind of simple and easy to do overall height control method; Said device utilizes the general-duty vehicle suspension system; Carrying out overall height based on the characteristic of hydro-pneumatic spring regulates; Do not changing existing vehicle structure, do not influencing under the prerequisite of vehicle performance; Solved the adjusting apparatus for height of vehicle overall height problem of regulating arbitrarily, said method can realize that overall height regulates arbitrarily in setting range, all is significantly increased for abominable road surface through performance, riding stability, air-drop air transportability and the land mine barrier propterty of vehicle.
For realizing the foregoing invention purpose, the technical scheme that the present invention takes is:
A kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring; Said control apparatus comprises that hydro-pneumatic spring, Top Crossbeam, lower cross arm, upper limit, lower limit, installation attach seat and wheel set, and said hydro-pneumatic spring comprises pin ear, connector, cylinder, oil cylinder, floating piston, main piston, main piston pin ear; Its improvements are that said control apparatus comprises spring locking-valve, system's locking-valve, charges and discharge fuel tap, fuel tank, oil sources and oil pipe line; Said system locking-valve is set between said hydro-pneumatic spring and the said fuel tank, said spring locking-valve is set between the cylinder of said hydro-pneumatic spring and the oil cylinder.
Another optimal technical scheme of the present invention is: said oil sources places in the said fuel tank, said hydro-pneumatic spring, oil pipe line, charges and discharge fuel tap and is connected successively with fuel tank.
Another optimal technical scheme of the present invention is: said oil sources is a high-pressure oil pump.
An optimal technical scheme more of the present invention is: said fuel tank comprises high-pressure side and low tension terminal.
An optimal technical scheme more of the present invention is: said lower limit bit position can be through adjustment piece or the adjustment of lower limit cap.
An optimal technical scheme more of the present invention is: said adjustment piece comprises adjusting screw(rod), adjustment piece the first half, regulates pad and adjustment piece the latter half.
An optimal technical scheme more of the present invention is: said lower limit cap comprises the limited cap body and regulates pad.
A kind of overall height control method based on control apparatus, its improvements are that said method comprises the steps:
Step 1: said spring locking-valve and system's locking-valve are opened, charged and discharged fuel tap and be communicated with the low tension terminal of fuel tank, this moment, overall height was reduced to lowest order;
Step 2: said spring locking-valve cuts out, and system's locking-valve is opened, and charges and discharge fuel tap and is communicated with high-pressure oil pump, and this moment, overall height rose to most significant bit;
Step 3: said spring locking-valve is opened, and system's locking-valve cuts out, and charges and discharge fuel tap and is communicated with the low tension terminal of fuel tank, and this moment, overall height was reduced to lowest order;
Step 4: said spring locking-valve cuts out, and system's locking-valve is opened, and charges and discharge fuel tap and is communicated with high-pressure oil pump, and this moment, overall height rose to most significant bit;
Step 5: said spring locking-valve is opened, and system's locking-valve cuts out, and charges and discharge fuel tap and is communicated with the low tension terminal of fuel tank, and this moment, overall height was adjusted to setting height;
Owing to adopted technique scheme, compared with prior art, beneficial effect of the present invention comprises:
1) overall height is adjustable arbitrarily
Overall height is regulated required lower limit height adjuster arbitrarily; It passes through the thickness of increase and decrease adjusting pad on the suspension system sense of motion; The journey that realizes slipping a line under the suspension system is adjustable arbitrarily within the specific limits; And then change the oil mass in the hydro-pneumatic spring oil cylinder, realize that overall height arbitrary height in setting range is adjustable;
2) low cost
Adjusting apparatus for height of vehicle of the present invention is that increase increases locking-valve, charges and discharge formations such as fuel tap, high pressure fuel source in based on the all-purpose vehicle draft hitch of hydro-pneumatic spring; Do not change existing vehicle structure, do not influence vehicle performance; Quantitatively fill into high pressure oil in the hydro-pneumatic spring through pressure apparatus; Carry out the overall height of arbitrary height and regulate, use than less cost and accomplish regulatory function;
3) simple in structure
Control apparatus increases locking-valve, charges and discharge fuel tap in the all-purpose vehicle suspension system based on hydro-pneumatic spring, high-pressure oil pump and fuel tank, and is simple to operate, long service life.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is a hydro-pneumatic spring draft hitch scheme drawing;
Fig. 2 is the adjustable hydro-pneumatic spring control setup of a car appearance scheme drawing;
Fig. 3 carries out the practical implementation step 1 that overall height is regulated;
Fig. 4 carries out the practical implementation step 2 that overall height is regulated;
Fig. 5 carries out the practical implementation step 3 that overall height is regulated;
Fig. 6 carries out the practical implementation step 4 that overall height is regulated;
Fig. 7 carries out the practical implementation step 5 that overall height is regulated;
Fig. 8 is the application example one that changes the lower limit position;
Fig. 9 is the application example two that changes the lower limit position;
Reference numeral:
The 1-hydro-pneumatic spring; The 2-Top Crossbeam; The 3-lower cross arm; The 4-upper limit; The 5-lower limit; 6-installs attaches seat; The 7-wheel set; 8-spring pin ear; The 9-connector; The 10-cylinder; The 11-oil cylinder; The 12-floating piston; The 13-main piston; 14-main piston pin ear; 15-spring locking-valve; 16-system locking-valve; 17-charges and discharge fuel tap; The 18-fuel tank; The 19-high-pressure oil pump; The 20-oil pipe line; The 21-adjusting screw(rod); 22-adjustment piece the first half; 23-first regulates pad; 24-adjustment piece the latter half; 25-limited cap body; 26-second regulates pad.
The specific embodiment
Below in conjunction with instance the present invention is carried out detailed explanation.
The present invention is a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring, can be applicable in all vehicles based on hydro-pneumatic spring, realizes overall height arbitrary height adjusting within the specific limits.
Overall height control method of the present invention be in all-purpose vehicle suspension system, increase locking-valve, charge and discharge fuel tap based on hydro-pneumatic spring, high-pressure oil pump and fuel tank constitute, can regulate through the overall height that adjusting apparatus for height of vehicle carry out arbitrary height.Hydro-pneumatic spring is made up of oil cylinder and cylinder; A spring locking-valve 15 is set between oil cylinder and cylinder; The effect of spring locking-valve 15 is when carrying out the overall height adjusting, can cylinder and oil cylinder be isolated; Realization is quantitatively oil-filled to oil cylinder, and oil-filled amount realizes through Top Crossbeam 2, lower cross arm 3 and inhibiting device are common.
Comprise high pressure fuel source and system's locking-valve 16 in the adjusting apparatus for height of vehicle, device gives the oil cylinder 11 of hydro-pneumatic spring 1 oil-filled through this high pressure fuel source, and in practical application, this oil sources can be a high-pressure oil pump 19; When being implemented in normal vehicle operation hydro-pneumatic spring and adjusting apparatus for height of vehicle are isolated, eliminate the influence of adjusting apparatus for height of vehicle normal vehicle operation through system's locking-valve 16.
The spring of adjusting apparatus for height of vehicle charges and discharge oil condition to be confirmed by charging and discharging fuel tap 17, selects to charge and discharge the connected state of fuel tap 17, carries out oil-filled or the oil in the spring emitted to spring.
Below in conjunction with certain two transverse arm hydro-pneumatic spring draft hitch practical implementation situation of the present invention is done detailed elaboration.
Shown in Figure 1 is two transverse arm hydro-pneumatic spring draft hitchs of representative type are installed by hydro-pneumatic spring 1, Top Crossbeam 2, lower cross arm 3, upper limit 4, lower limit 5, hydro-pneumatic spring and to be attached seat 6 and wheel set 7 constitutes.Hydro-pneumatic spring 1 and hydro-pneumatic spring are installed to attach between the seat 6 and are connected through the hinge.
Shown in Figure 2 is the structure and the control chart of adjusting apparatus for height of vehicle, by hydro-pneumatic spring pin ear 8, hydro-pneumatic spring connector 9, cylinder 10, oil cylinder 11, floating piston 12, main piston 13, hydro-pneumatic spring main piston pin ear 14, spring locking-valve 15, system's locking-valve 16, charge and discharge fuel tap 17, fuel tank 18, high-pressure oil pump 19 and oil pipe line 20 and form.
Carry out step that overall height regulates such as Fig. 3-shown in Figure 7:
1) step 1 is as shown in Figure 3, and spring locking-valve 15 is opened, and system's locking-valve 16 is opened, and is raised to the highlyest under the pressure effect of floating piston 12 gas in cylinder 10, and do not have hydraulic oil in the cylinder 10 this moment.Under the effect of car weight, Top Crossbeam 2 contact upper limits 4, main piston 13 is with the hydraulic oil pressure in the oil cylinder 11 to fuel tank 18, and overall height is reduced to minimum.At this moment, spring locking-valve 15 is in path, and system's locking-valve 16 is in path, charges and discharge low tension terminal and oil pipe line 20 that fuel tap 17 is communicated with fuel tank 18.
2) step 2 is as shown in Figure 4, and spring locking-valve 15 cuts out, and floating piston 12 is kept the extreme higher position in cylinder 10, then system's locking-valve 16 is opened, and do not have hydraulic oil in the cylinder 10 this moment.Charge and discharge fuel tap 17 and be communicated with high-pressure oil pump 19 and oil pipe line 20, high pressure oil charges in the oil cylinder 11.Under the effect of high pressure oil, Top Crossbeam 2 contact lower limit 5, overall height rises to the highest.At this moment, spring locking-valve 15 is in and opens circuit, and system's locking-valve 16 is in path, charges and discharge fuel tap 17 and is communicated with high-pressure oil pump 19 and oil pipe line 20.
3) step 3 is as shown in Figure 5, and system's locking-valve 16 cuts out, and charges and discharge the low tension terminal that fuel tap is communicated with fuel tank 18.Then open spring locking-valve 15, the vehicle by gravity is pressed into the hydraulic oil in the oil cylinder 11 in the cylinder 10.At this moment, the cylinder 10 and the oil cylinder 11 of hydro-pneumatic spring 1 are in connected state, and cylinder 10 air pressure P1 are not enough to the sprung weight M1 of support vehicle, Top Crossbeam 2 contact upper limits 4, and vehicle is in minimum altitude.
4) step 4 is as shown in Figure 6, and spring locking-valve 15 cuts out, and keeps the position of floating piston 12 in cylinder 10, then system's locking-valve 16 is opened, and charges and discharge fuel tap 17 and is communicated with high-pressure oil pump 19 and oil pipe line 20, and high pressure oil charges in the oil cylinder 11.High pressure oil with down, Top Crossbeam 2 contacts lower limit 5, overall height rises to the highest.At this moment, spring locking-valve 15 is in and opens circuit, and system's locking-valve 16 is in path, charges and discharge fuel tap 17 and is communicated with high-pressure oil pump 19 and oil pipe line 20.
5) step 5 is as shown in Figure 7, and system's locking-valve 16 cuts out, and charges and discharge the low tension terminal that fuel tap 17 is communicated with fuel tank 18.Then open spring locking-valve 15, the vehicle by gravity is pressed into the hydraulic oil in the oil cylinder 11 in the cylinder 10.At this moment, the cylinder of hydro-pneumatic spring 1 10 is in connected state with oil cylinder 11, and the sprung weight M1 that cylinder 10 air pressure P2 can support vehicle, Top Crossbeam 2 are in the middle of upper limit 4 and the lower limit 5, and overall height is adjusted to the mode of operation that needs.
When carrying out the overall height adjusting, can realize that any overall height is adjustable through changing the lower limit bit position and then changing the hydraulic pressure oil mass in the hydro-pneumatic spring oil cylinder 11.
Adjustment piece shown in Figure 8 is the application example one that changes the lower limit position.This adjustment piece regulates pad 23 by adjusting screw(rod) 21, adjustment piece the first half 22, first and adjustment piece the latter half 24 is formed.Adjustment piece the latter half 24 has viscosity or magnetic, can be adsorbed on the top of lower limit 5.After the overall height adjustment finishes, this adjustment piece is taken off, recover the movement travel of suspension system.In this application example, regulate the thickness of pad 23 through changing first, so that the journey of slipping a line under the position of change lower limit 5 and the draft hitch, realize the fuel-flow control in the spring oil cylinder 11, reach overall height continuously controllable purpose.
Lower limit cap shown in Figure 9 is the application example two that changes the lower limit position.This lower limit cap is regulated pad 26 by limited cap 25 and second and is formed.Carry out before overall height regulates, this lower limit cap is buckled in the top of lower limit 5, overall height after regulating is taken off this lower limit cap, recover suspension system on slip a line journey with under the journey of slipping a line.In this application example; Through thickness that changes the second adjusting pad 26 and then the effective thickness that changes this lower limit cap; And then the journey of slipping a line under the position of change lower limit 5 and the draft hitch, realize the fuel-flow control in the spring oil cylinder 11, reach overall height continuously controllable purpose.
Invention has been described according to specific exemplary embodiment here.It will be conspicuous under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (8)
1. adjusting apparatus for height of vehicle based on hydro-pneumatic spring; Said control apparatus comprises hydro-pneumatic spring (1), Top Crossbeam (2), lower cross arm (3), upper limit (4), lower limit (5), installs and attach seat (6) and wheel set (7), and said hydro-pneumatic spring (1) comprises pin ear (8), connector (9), cylinder (10), oil cylinder (11), floating piston (12), main piston (13), main piston pin ear (14); It is characterized in that said control apparatus comprises spring locking-valve (15), system's locking-valve (16), charges and discharge fuel tap (17), fuel tank (18), oil sources (19) and oil pipe line (20); Between said hydro-pneumatic spring (1) and the said fuel tank (18) said system locking-valve (16) is set, between the cylinder (10) of said hydro-pneumatic spring (1) and the oil cylinder (11) said spring locking-valve (15) is set.
2. a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring as claimed in claim 1 is characterized in that said hydro-pneumatic spring (1), oil pipe line (20), charges and discharge fuel tap (17) and be connected successively with fuel tank (18).
3. a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring as claimed in claim 1 is characterized in that said oil sources (19) is a high-pressure oil pump (19).
4. a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring as claimed in claim 1 is characterized in that said fuel tank (18) comprises high-pressure side and low tension terminal.
5. a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring as claimed in claim 1 is characterized in that the position of said lower limit (5) can be through adjustment piece or the adjustment of lower limit cap.
6. a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring as claimed in claim 1 is characterized in that said adjustment piece comprises adjusting screw(rod) (21), adjustment piece the first half (22), regulates pad (23) and adjustment piece the latter half (24).
7. a kind of adjusting apparatus for height of vehicle based on hydro-pneumatic spring as claimed in claim 1 is characterized in that said lower limit cap comprises limited cap body (25) and regulates pad (26).
8. one kind based on the overall height control method of control apparatus according to claim 1, it is characterized in that said method comprises the steps:
Step 1: said spring locking-valve (15) and system's locking-valve (16) are opened, charged and discharged fuel tap (17) and be communicated with the low tension terminal of fuel tank (18), this moment, overall height was reduced to lowest order;
Step 2: said spring locking-valve (15) cuts out, and system's locking-valve (16) is opened, and charges and discharge fuel tap (17) and is communicated with high-pressure oil pump (19), and this moment, overall height rose to most significant bit;
Step 3: said spring locking-valve (15) is opened, and system's locking-valve (16) cuts out, and charges and discharge fuel tap (17) and is communicated with the low tension terminal of fuel tank (18), and this moment, overall height was reduced to lowest order;
Step 4: said spring locking-valve (15) cuts out, and system's locking-valve (16) is opened, and charges and discharge fuel tap (17) and is communicated with high-pressure oil pump (19), and this moment, overall height rose to most significant bit;
Step 5: said spring locking-valve (15) is opened, and system's locking-valve (16) cuts out, and charges and discharge fuel tap (17) and is communicated with the low tension terminal of fuel tank (18), and this moment, overall height transferred to setting height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102423276A CN102358132A (en) | 2011-08-23 | 2011-08-23 | Device and method for adjusting vehicle height based on hydro-pneumatic spring |
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| CN2011102423276A CN102358132A (en) | 2011-08-23 | 2011-08-23 | Device and method for adjusting vehicle height based on hydro-pneumatic spring |
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| CN105539047A (en) * | 2015-12-16 | 2016-05-04 | 四川迅吉科技有限责任公司 | Suspension structure below train of motor train unit |
| CN105857005A (en) * | 2016-03-24 | 2016-08-17 | 中国北方车辆研究所 | Single acting cylinder load-sensitive proportional throttle valve set |
| CN106114119A (en) * | 2016-07-04 | 2016-11-16 | 江苏大学 | A kind of dynamically bodywork height regulation system and method |
| CN107399215A (en) * | 2017-06-23 | 2017-11-28 | 北京机械设备研究所 | A kind of arrangement for adjusting height of independent oleo-pneumatic suspension |
| CN109159636A (en) * | 2018-10-30 | 2019-01-08 | 吉林大学 | A kind of special vehicle fluid pressure type adjustment height suspension and its control method |
| CN110861463A (en) * | 2019-11-28 | 2020-03-06 | 安徽江淮汽车集团股份有限公司 | Air suspension control device, air suspension control system and automobile |
| CN110962522A (en) * | 2019-11-21 | 2020-04-07 | 中国北方车辆研究所 | Lifting wheel locking device for trench crossing of unmanned wheeled vehicle |
| CN111322341A (en) * | 2020-03-10 | 2020-06-23 | 季华实验室 | Air spring, and control system and control method of air spring |
| CN111721548A (en) * | 2020-06-30 | 2020-09-29 | 东风汽车集团有限公司 | Gas spring device and test bench |
| CN118641186B (en) * | 2024-08-19 | 2024-10-25 | 北方汤臣传动科技有限公司 | High performance hydro-pneumatic spring capability test device |
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| CN107399215A (en) * | 2017-06-23 | 2017-11-28 | 北京机械设备研究所 | A kind of arrangement for adjusting height of independent oleo-pneumatic suspension |
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| CN109159636B (en) * | 2018-10-30 | 2023-10-20 | 吉林大学 | Hydraulic height-adjustable suspension for special vehicle and control method thereof |
| CN110962522A (en) * | 2019-11-21 | 2020-04-07 | 中国北方车辆研究所 | Lifting wheel locking device for trench crossing of unmanned wheeled vehicle |
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Application publication date: 20120222 |