CN102673340A - Car posture adjusting system of oil-gas suspension - Google Patents
Car posture adjusting system of oil-gas suspension Download PDFInfo
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- CN102673340A CN102673340A CN2012101851134A CN201210185113A CN102673340A CN 102673340 A CN102673340 A CN 102673340A CN 2012101851134 A CN2012101851134 A CN 2012101851134A CN 201210185113 A CN201210185113 A CN 201210185113A CN 102673340 A CN102673340 A CN 102673340A
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Abstract
The invention relates to a car posture adjusting system. A power source is connected with an oil tank, an output end of the power source is sequentially in serial connection with an inlet oil filter and an unloading valve, and a two-position three-way solenoid valve can serve as the unloading valve to supply pressure oil to the adjusting system through electromagnetic reversing. An overflow valve is parallelly connected with the unloading valve, and control on critical pressure of the system can be achieved by adjusting a handle. A b end of an oil outlet of the unloading valve is respectively connected with oil inlet ends of a front suspension control valve and a rear suspension control valve through high-pressure hard tubes or hoses, oil outlet ends of the front suspension control valve and the rear suspension control valve are sequentially connected with a throttle valve group and a suspension hydraulic lock serially, and the suspension hydraulic lock is connected with an oil-gas suspension through a pipeline. When the suspension hydraulic lock is powered off, liquid oil in the oil-gas suspension is separated from the car posture adjusting system, so that stability of car postures and driving performance is ensured, and when the suspension hydraulic lock is powered on, the liquid oil in the oil-gas suspension flows back to the oil tank through the car posture adjusting system.
Description
Technical field
The present invention relates to a kind of car appearance control system of using the hydro-pneumatic spring vehicle, belong to hydraulic machinery and road vehicle application field.
Background technology
In the prior art; The elastic element rigidity characteristic of traditional suspension is nonadjustable, and significant change can take place the situation lower body attitude that changes greatly at car load, causes the handling stability ability and the ride comfort of vehicle to decline to a great extent; To this situation; Overseas enterprise has realized the adjustable suspension form of empty fully loaded two stage stiffness through hydro-pneumatic spring, but vehicle is not that two states is only arranged in actual use, and the uncertainty of load capacity makes this regulative mode can't satisfy operating needs; This also becomes the technical barrier that present domestic vehicle production manufacturer faces and can't effectively solve all the time, so exploitation car appearance continuously controllable suspension system just seems particularly necessary.
Summary of the invention
According to an aspect of the present invention; A kind of hydro pneumatic suspension car appearance control system is provided; Mainly comprise propulsion source, fuel tank, unloader valve, by pass valve, front suspension control cock, rear suspension control cock and suspension hydraulic lock, wherein propulsion source is connected with fuel tank, propulsion source mouth successively connect oil-feed filter and unloader valve; Unloader valve can adopt two-position three way magnetic valve, and being embodied as control system through electromagnetic switch provides pressure oil; By pass valve is parallelly connected with unloader valve, regulates through handle and can realize the control to system's critical pressure; Be connected with the oil inlet end of front suspension control cock respectively through high pressure hard tube or flexible pipe at the oil outlet b of unloader valve end with the rear suspension control cock; Front suspension control cock and rear suspension control cock are 3-position-3-way solenoid valve, and electromagnetic valve is in the meta off-state when system does not work; The oil outlet end of front suspension control cock and rear suspension control cock is series throttle group and suspension hydraulic lock successively, and the suspension hydraulic lock is a two-position two-way solenoid valve, and the suspension hydraulic lock is connected with hydro pneumatic suspension through pipeline.When the suspension hydraulic lock was cut off the power supply, fluid in the hydro pneumatic suspension and car appearance control system were isolated, and guaranteed the stable of vehicle attitude and rideability, and when the suspension hydraulic lock is switched on, the fluid in the hydro pneumatic suspension will flow back to fuel tank through car appearance control system.
Car appearance control system of the present invention is communicated with hydraulic lock combine valve and respective line, sensor etc. by a draft hitch control combination valve and two and forms.Draft hitch control combination valve and two connection hydraulic lock combine valves all adopt the plugged electric magnet valve to reduce arrangement space; The valve piece adopts light aluminum alloy materials; Have favorable mechanical performance, good anticorrosive antioxygenic property compared to conventional steel material valve piece, simultaneously can be so that whole car appearance control system weight loss of weight nearly 60%.Be provided with flow valve in the system, be used for the Adjustment System flow and guarantee system's synchronized movement on same direction, be used for the responsiveness of control system simultaneously.
Carry out the control of car appearance through adding angular transducer, carry out the wheel load monitoring through adding pressure sensor.Car appearance control is positioned at through the control system collection mainly that the measured height of the carbody data of angular-motion transducer of four suspensions guarantee whether car appearance height meets design requirement before and after the car body.Angular-motion transducer adopts the non-contact type angular-motion transducer, and it has precision height, characteristics that measurement range is big, and can satisfy the specific (special) requirements of vehicle to electromagnetic compatibility and compatible with environment etc. through the raising of degree of protection.Wheel load monitoring is to gather the system pressure of front axle and back diaxon through being arranged at two pressure sensors in the hydraulic efficiency pressure system, judges through control system whether each wheel load satisfies operating needs.
Description of drawings
Fig. 1 is car appearance control system theory of constitution figure;
Fig. 2 is each duty valve piece theory of constitution figure of car appearance control system;
Fig. 3 is a draft hitch control combination front view;
Fig. 4 is a draft hitch control combination birds-eye view;
Fig. 5 is a draft hitch control combination back view;
Fig. 6 is for being communicated with hydraulic lock combine and assemble figure;
Fig. 7 is a car appearance control system line graph;
Fig. 8 car appearance control system propradation schematic diagram;
Fig. 9 car appearance control system decline state schematic diagram;
Figure 10 car appearance control system forward-lean state schematic diagram;
Figure 11 car appearance control system retroverted state schematic diagram;
Figure 12 flow regulating valve group schematic diagram.
Among the figure: 1-system dynamic source, the control combination of 2-draft hitch, the 3-manual pump, the right hydro pneumatic suspension of 4-, right two hydro pneumatic suspensions of 5-, 6-is communicated with the hydraulic lock combination; Right three hydro pneumatic suspensions of 7-, a 8-left side three hydro pneumatic suspensions, 9-the second from left hydro pneumatic suspension, 10-the first from left hydro pneumatic suspension, 11-main valve return check valve, 12-by pass valve; The 13-unloader valve, 14-front suspension control cock, the right front suspension hydraulic lock of 15-, the right front rising flow regulating valve of 16-, the right front check valve of 17-; 18-front axle liquid-pressure pick-up, the right front decline flow regulating valve of 19-, 20-rear suspension control cock, the right back rising flow regulating valve of 21-, the right back decline flow regulating valve of 22-; The right back check valve of 23-, 24-rear axle liquid-pressure pick-up, the left back check valve of 25-, the left back decline flow regulating valve of 26-, the left back rising flow regulating valve of 27-; 28-rear suspension check valve, 29-front suspension check valve, the left front rising flow regulating valve of 30-, the left front suspension hydraulic lock of 31-, the left front decline flow regulating valve of 32-; The left front check valve of 33-, 34-oil-feed filter, 35-oil return filter, 36-propulsion source (pump motor system), 37-fuel tank; 38-rear suspension hydraulic lock, obstacle detouring valve behind the 39-, all the other system's reserved opening of 40-, 41-high pressure hose, 42-next door joint
The specific embodiment
Below in conjunction with accompanying drawing car appearance control system is done detailed description:
Shown in Figure 1 is car appearance control system schematic diagram.
Said car appearance control system is by system dynamic source 1, hydraulic efficiency gear, a right hydro pneumatic suspension 4; Right two hydro pneumatic suspensions 5, right three hydro pneumatic suspensions 7, left three hydro pneumatic suspensions 8; The second from left hydro pneumatic suspension 9; The first from left hydro pneumatic suspension 10, electrical controller and cable and sensor are formed, and each several part is connected through high pressure hard tube (or flexible pipe).Preferably, the hydraulic efficiency gear among the present invention by draft hitch control combination 2 be communicated with hydraulic lock combination 6 and form, but those skilled in the art's a plurality of integrated control valves of combination in any according to actual needs, realization is to the adjusting of car appearance.Hydro pneumatic suspension is divided into primary shaft is one group in system shown in Fig. 1-2; Back diaxon is one group totally two groups; Can be through the subsidiary electrical controller of system; Each electromagnetic valve is carried out logic control, realize rising, descend, lean forward, swing back, setting arbitrarily concrete actions such as ride-height, the final purpose that realizes changing car appearance state.Concrete connection mode is: the oil inlet in system dynamic source 1 links to each other with the oil inlet J1 of draft hitch control combination 2; The manual oil inlet J2 of draft hitch control combination 2 links to each other with the oil outlet pipe of manual pump 3; The right front suspension oil-feed port C1 of draft hitch control combination 2 links to each other with a right hydro pneumatic suspension 4, left front suspension oil-feed port C2 links to each other with the first from left hydro pneumatic suspension 10, right rear suspension oil-feed port C3 links to each other with the oil inlet J of the connection hydraulic lock combination 3 of right back hydro pneumatic suspension, left rear suspension oil-feed port C4 links to each other with the oil inlet J of the connection hydraulic lock combination 3 of left back hydro pneumatic suspension; The preceding oil outlet C7 of the connection hydraulic lock combination 3 of right back hydro pneumatic suspension links to each other with right two hydro pneumatic suspensions 5; The back oil outlet C8 of the connection hydraulic lock combination 3 of right back hydro pneumatic suspension links to each other with right three hydro pneumatic suspensions 7; The preceding oil outlet C7 mouth of the connection hydraulic lock combination 3 of left back hydro pneumatic suspension links to each other with the second from left hydro pneumatic suspension 9; The back oil outlet C2 of the connection hydraulic lock combination 3 of left back hydro pneumatic suspension links to each other with left three hydro pneumatic suspensions 8.
Said system dynamic source 1 is made up of fuel tank 37, oil-feed filter 34, oil return filter 35 and propulsion source (pump motor system) 36.System dynamic source 1 is left an oil inlet and a return opening respectively, and links to each other with return opening C5 with the oil inlet J1 of draft hitch control combination 2 respectively through hard tube or high pressure hose.
System carries out car appearance vertical ground direction displacement control through adding angular transducer, carries out the axle load monitoring through adding pressure sensor.Car appearance control is positioned at through the control system collection mainly that the measured height of the carbody data of angular-motion transducer of four suspensions guarantee whether car appearance height meets design requirement before and after the car body.Angular-motion transducer can adopt the non-contact type angular-motion transducer, and it has precision height, characteristics that measurement range is big, and satisfies the requirement of special operating needs to electromagnetic compatibility and compatible with environment.
Shown in Figure 2 is car appearance control system each several part theory of constitution; Because the multiple-axle vehicle behavioral system is in the static indeterminacy state; Distribute uneven situation for avoiding wheel load in car appearance control process, occurring; In the hydraulic efficiency pressure system of forward and backward axle, installed front axle liquid-pressure pick-up 18 and rear axle liquid-pressure pick-up 24 respectively additional, be used to carry out the axle load monitoring, and charged and discharged the adjustment that oil realizes that wheel load is uneven through control system.In addition; Propulsion source 36 is connected with fuel tank 37, when propulsion source 36 work, will extract the fluid in the fuel tank 37 and offer car appearance control system, propulsion source 36 mouths successively connect oil-feed filter 34 and unloader valve 13; Oil-feed filter 34 is used for filtering the impurity that fluid exists; Prevent contaminated system, unloader valve 13 can adopt two-position three way magnetic valve, and being embodied as control system through electromagnetic switch provides pressure oil; By pass valve 12 is parallelly connected with unloader valve 13, regulates through handle and can realize the control to system's critical pressure; Be connected with the oil inlet end of front suspension control cock 14 respectively through high pressure hard tube or flexible pipe at the oil outlet b of unloader valve 13 end with rear suspension control cock 20; Front suspension control cock 14 can adopt 3-position-3-way solenoid valve with rear suspension control cock 20, and electromagnetic valve is in the meta off-state when system does not work; The oil outlet end of front suspension control cock 14 and rear suspension control cock 20 is series throttle group and suspension hydraulic lock successively, and the suspension hydraulic lock can adopt two-position two-way solenoid valve, and arranges near hydro pneumatic suspension as far as possible; To reduce the pressure duct length between suspension hydraulic lock and the hydro pneumatic suspension; The reliability of raising system, for example right front suspension hydraulic lock 15 is connected with a right hydro pneumatic suspension 4, and left front suspension hydraulic lock 31 is connected with the first from left hydro pneumatic suspension 10; Two rear suspension hydraulic lock 38 are connected with right three hydro pneumatic suspensions 7 with left three hydro pneumatic suspensions 8, right two hydro pneumatic suspensions 5 with the second from left hydro pneumatic suspension 9 respectively; When hydraulic lock was cut off the power supply, fluid in the hydro pneumatic suspension and car appearance control system were isolated, and guaranteed the stable of vehicle attitude and rideability; When hydraulic lock is switched on, the fluid in the hydro pneumatic suspension will flow back to fuel tank through car appearance control system.Right front in addition flow regulating valve group composes in parallel with right front decline flow regulating valve 19 after being connected by right front check valve 17 and right front rising flow regulating valve 16 again; Right back flow regulating valve group composes in parallel with right back decline flow regulating valve 22 after being connected by right back check valve 23 and right back rising flow regulating valve 21 again; Left front flow regulating valve group composes in parallel with left front decline flow regulating valve 32 after being connected by left front check valve 29 and left front rising flow regulating valve 30 again, and left back flow regulating valve group composes in parallel with left back decline flow regulating valve 26 after being connected by left back check valve 25 and left back rising flow regulating valve 27 again.Diaxon one-sided hydro pneumatic suspension in back connects through high pressure hard tube or flexible pipe in addition, and on pipeline, is in series with back obstacle detouring valve 39, and back obstacle detouring valve 39 can adopt two-position two-way solenoid valve; When after obstacle detouring valve 39 be in off-position; The one-sided hydro pneumatic suspension of back diaxon is communicated with and forms balance suspension, and when vehicle need be through obstacles such as trench or vertical wall, back obstacle detouring valve 39 was in "on" position; The back one-sided hydro pneumatic suspension oil circuit of diaxon is broken off, to promote the carrying capacity of vehicle.
System control mode is divided into manual control and two kinds of patterns of automatic guidance.Under the automatic control state, chaufeur is as long as operate corresponding car appearance Action Button, and system will through gathering car appearance position signal, reach the predefined state of program according to program setting.When being under the manual state of a control, chaufeur confirms that through the time length of control car appearance Action Button hydro pneumatic suspension fills oil-out time length, thereby reaches the effect of control car appearance position height.
Shown in Fig. 3-6, draft hitch control combination 2 is made up of main valve return check valve 11, by pass valve 12, unloader valve 13, front suspension control cock 14, right front suspension hydraulic lock 15, right front rising flow regulating valve 16, right front check valve 17, front axle liquid-pressure pick-up 18, right front decline flow regulating valve 19, rear suspension control cock 20, rear suspension check valve 28, front suspension check valve 29, left front rising flow regulating valve 30, left front suspension hydraulic lock 31, left front decline flow regulating valve 32, left front check valve 33.Being communicated with hydraulic lock combination 6 is made up of rear suspension hydraulic lock 38 and back obstacle detouring valve 39.
Draft hitch control combination 2 and two connection hydraulic lock combination 6 all adopt the plugged electric magnet valve to reduce arrangement space; The valve block of material adopts the Alclad material; Have favorable mechanical performance, good anticorrosive antioxygenic property compared to conventional steel material valve piece, simultaneously can be so that whole car appearance control system weight loss of weight nearly 60%.
Main valve return check valve 11 in the draft hitch control combination 2, by pass valve 12, unloader valve 13 are formed the system unloaded loop, can carry out off-load to the remaining high pressure of internal system after unexpected high pressure that produces of system and the working cycle.Main valve return check valve 11 prevents that system oil return from producing and pours in down a chimney the phenomenon adverse current and go back to system; By pass valve 12 is parallelly connected with unloader valve 13; Be used for regulating and keeping the required pressure of system's normal operation, unloader valve 13 adopts two-position three way magnetic valve, and utilization back pressure spring resets; Break-make electricity through electromagnet comes control system fluid trend, reaches off-load or builds the purpose of pressure.As shown in Figure 2, during the electromagnet outage, unloader valve 13 links to each other with a mouth through spring reset p mouth, and the high pressure oil that system dynamic source 1 is produced is directly got back in the fuel tank 37 through unloader valve 13, reaches the off-load purpose; The electromagnet energising, the p mouth of unloader valve 13 links to each other with the b mouth, and the high pressure oil that system dynamic source 1 is produced reaches the purpose that system builds pressure through unloader valve 13 entering systems.
The flow regulating valve group form that is in parallel with the decline flow regulating valve again after draft hitch control combination 2 is adopted check valves and the rising flow regulating valve is connected is regulated suspension and is charged and discharged speed oil and flow, the steady up-down in the assurance car appearance control process.Through method of attachment as shown in Figure 2, right front check valve 17 is parallelly connected with right front rising flow regulating valve 16 series connection backs and right front decline flow regulating valve 19, is connected in series to the oil circuit that charges and discharge of a right hydro pneumatic suspension 4 more jointly; Right back check valve 23 and right back rising flow regulating valve 21 series connection backs are parallelly connected with right back decline flow regulating valve 22, are connected in series to the oil circuit that charges and discharge of the right back hydro pneumatic suspension be made up of right two hydro pneumatic suspensions 5 and right three hydro pneumatic suspensions 7 more jointly; Left front check valve 29 is parallelly connected with left front rising flow regulating valve 30 series connection backs and left front decline flow regulating valve 32, is connected in series to the oil circuit that charges and discharge of the first from left hydro pneumatic suspension 10 more jointly; Left back check valve 25 and left back rising flow regulating valve 27 series connection backs are parallelly connected with left back decline flow regulating valve 26, are connected in series to the oil circuit that charges and discharge of the left back hydro pneumatic suspension be made up of the second from left hydro pneumatic suspension 9 and left three hydro pneumatic suspensions 8 more jointly.Two parallelly connected oil circuits of composite throttling device were worked simultaneously when the car appearance rose when this connection mode made hydro pneumatic suspension oil-filled; Open area is bigger; The flow channels that has check valve when the car appearance descends when draining the oil stopped oil; Open area diminishes, thereby has realized that vehicle attitude rises rapidly when regulating and the mild characteristics that descend.
Right front suspension hydraulic lock 15, left front suspension hydraulic lock 31 and rear suspension hydraulic lock 38 all adopt the version of 2/2-way electromagnetic valve; Wherein right front suspension hydraulic lock 15 is integrated in the draft hitch control combination 2 with left front suspension hydraulic lock 31; Be connected with a right hydro pneumatic suspension, the first from left hydro pneumatic suspension respectively through high pressure hose or hard tube; Two rear suspension hydraulic lock 38 are arranged in and are communicated with in the hydraulic lock combination 6, are connected with back diaxon suspension cylinder through the inner oil duct of valve piece.When normal vehicle operation, hydraulic lock is in off-position, is used for sealing the high pressure oil of suspension cylinder, guarantees the normal operation of suspension system; When needs reduce the car appearance, the hydraulic lock energising, the high pressure oil in the suspension cylinder gets into system and flows back to fuel tank through hydraulic lock.
Like Fig. 2 and shown in Figure 6; Back obstacle detouring valve 39 adopts the structure of 2/2-way electromagnetic valve; Be integrated in the valve piece and be communicated with in the hydraulic lock combination 6, be communicated with through right back pipeline 51 between right two hydro pneumatic suspensions 5 and right three hydro pneumatic suspensions 7, be communicated with through left back pipeline 50 between the second from left hydro pneumatic suspension 9 and left three hydro pneumatic suspensions 8; Obstacle detouring valve 39 is connected on respectively on left back pipeline 50 and the right back pipeline 51 after two; Form the balance suspension structure, need to propose be when the diaxon wheelbase hour, realize that through the pipeline connection of hydro pneumatic suspension the balance suspension function has vital function to promoting road holding.In this embodiment; Be to be that example describes with the six-wheel vehicle; It should be apparent to those skilled in the art that; Connection hydraulic lock combination 6 of the present invention is applicable to the balance suspension structure of multiple-axle vehicle, is communicated with hydraulic lock combination 6 as long as be provided with between the hydro pneumatic suspension of vehicle homonymy, can realize balance suspension and hydraulic pressure blocking function.In addition; In this embodiment, the suspension hydraulic lock has only a kind of structure, in order to be convenient to distinguish on describing; The suspension hydraulic lock definition that will be positioned at the hydro pneumatic suspension place of primary shaft is the front suspension hydraulic lock, will be the rear suspension hydraulic lock in the definition of the suspension hydraulic lock between the hydro pneumatic suspension of back diaxon." back " in the back obstacle detouring valve representes that this obstacle detouring valve is installed between the hydro pneumatic suspension of back diaxon.
What Fig. 7 represented is the annexation that system arranges onboard.If the hydraulic efficiency pressure system parts are installed in the car, then can system be connected with exterior hydro pneumatic suspension, thereby constitute whole car appearance control system through next door joint 42 and high pressure hose 41.
The system works principle is following:
State when Fig. 2 does not work for car appearance control system, each electromagnetic valve all is in de-energized.When normal vehicle operation, back obstacle detouring valve 39 is in off-position, has constituted the balance suspension structure from diaxon then, and is can the effective attenuation single-wheel suffered from ground-surface shock-excitation; When vehicle carried out obstacle detouring, the balance suspension pipeline was broken off in back obstacle detouring valve 39 energisings, guaranteed that back diaxon hydro pneumatic suspension works independently, to improve carrying capacity.
Schematic diagram when Fig. 8 does vertical motion for car appearance control system; This moment, propulsion source 36 was successively switched on unloader valve 13; Front suspension control cock 14 is also switched on simultaneously with rear suspension control cock 20 and is adjusted to right position; Pressure oil will get into each hydro pneumatic suspension through propulsion source 36 order, and when system pressure during greater than vehicle spring load carrying ability, car body will be realized vertical motion.
Schematic diagram when Fig. 9 does down maneuver for car appearance control system; This moment front suspension control cock 14 and 20 energisings of rear suspension control cock are also adjusted to position, a left side; Right front suspension hydraulic lock 15, left front suspension hydraulic lock 31 and two also energisings simultaneously of rear suspension hydraulic lock 38; Pressure oil in the hydro pneumatic suspension returns order to fuel tank 37 through control system, thereby realizes the car body down maneuver.
Schematic diagram when Figure 10 does forward swing for car appearance control system; Front suspension control cock 14 energisings this moment are also adjusted to position, a left side; Right front suspension hydraulic lock 15, left front suspension hydraulic lock 31 are switched on simultaneously, and rear suspension control cock 20 energisings and adjust to right position in addition make the front axle hydro pneumatic suspension drain the oil; Back diaxon hydro pneumatic suspension is oil-filled, thereby realizes the forward swing of car body.
Schematic diagram when Figure 11 moves for do hypsokinesis for car appearance control system; Front suspension control cock 14 energisings this moment are also adjusted to right position; Two rear suspension hydraulic lock 38 are switched on simultaneously, and rear suspension control cock 20 is switched on and adjusted to position, a left side in addition, makes that the front axle hydro pneumatic suspension is oil-filled; Back diaxon hydro pneumatic suspension is drained the oil, thereby realizes the hypsokinesis action of car body.
Need to prove; Those skilled in the art can easily understand; The adjustable hydro pneumatic suspension device of car appearance involved in the present invention can be installed on the dissimilar vehicles in the above described manner; And under the situation that does not break away from the spirit and scope of the present invention that are defined by the following claims, can carry out various multi-form changes and change to the present invention.
Claims (7)
1. hydro pneumatic suspension car appearance control system; Mainly comprise propulsion source, fuel tank, unloader valve, by pass valve, front suspension control cock, rear suspension control cock and suspension hydraulic lock; Wherein propulsion source is connected with fuel tank; Propulsion source mouth successively connect oil-feed filter and unloader valve, unloader valve can adopt two-position three way magnetic valve, and being embodied as control system through electromagnetic switch provides pressure oil; By pass valve is parallelly connected with unloader valve, regulates through handle and can realize the control to system's critical pressure; Be connected with the oil inlet end of front suspension control cock respectively through high pressure hard tube or flexible pipe at the oil outlet b of unloader valve end with the rear suspension control cock; Front suspension control cock and rear suspension control cock are 3-position-3-way solenoid valve, and electromagnetic valve is in the meta off-state when system does not work; The oil outlet end of front suspension control cock and rear suspension control cock is series throttle group and suspension hydraulic lock successively, and the suspension hydraulic lock is a two-position two-way solenoid valve, and the suspension hydraulic lock is connected with hydro pneumatic suspension through pipeline.When the suspension hydraulic lock was cut off the power supply, fluid in the hydro pneumatic suspension and car appearance control system were isolated, and guaranteed the stable of vehicle attitude and rideability, and when the suspension hydraulic lock is switched on, the fluid in the hydro pneumatic suspension will flow back to fuel tank through car appearance control system.
2. car appearance control system according to claim 1; It is characterized in that: the form realization hydro pneumatic suspension that is in parallel with the decline flow regulating valve again after the flow regulating valve group adopts check valve and the rising flow regulating valve connect charges and discharge the control of speed oil and flow, the steady up-down in the assurance car appearance control process.
3. car appearance control system according to claim 1, it is characterized in that: rear suspension is made up of diaxon, and its one-sided hydro pneumatic suspension connects through high pressure hard tube or flexible pipe; And obstacle detouring valve after on pipeline, being in series with; Back obstacle detouring valve is a two-position two-way solenoid valve, when after the obstacle detouring valve be in off-position, the one-sided hydro pneumatic suspension of back diaxon is communicated with and forms balance suspension; When vehicle need be through obstacles such as trench or vertical wall; Back obstacle detouring valve is in "on" position, the back one-sided hydro pneumatic suspension oil circuit of diaxon is broken off, to promote the carrying capacity of vehicle.
4. car appearance control system according to claim 1, it is characterized in that: said sensor comprises angular transducer and pressure sensor, and said angular transducer carries out car appearance vertical ground direction displacement control, and said pressure sensor carries out the axle load monitoring.
5. car appearance control system according to claim 4 is characterized in that: said angular transducer is the non-contact type angular transducer.
6. car appearance control system according to claim 1; It is characterized in that: said car appearance control system mode is divided into manual control and two kinds of patterns of automatic guidance; Under the automatic control state, the corresponding car appearance of driver's operation Action Button, system is according to program setting; Through gathering car appearance position signal, reach the predefined state of program; When being under the manual state of a control, chaufeur confirms that through the time length of control car appearance Action Button hydro pneumatic suspension fills oil-out time length.
7. car appearance control system according to claim 1 is characterized in that: said car appearance control system can be installed in the car, through next door joint and high pressure hose said car appearance control system is connected with exterior hydro pneumatic suspension.
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| CN201210185113.4A CN102673340B (en) | 2012-06-07 | 2012-06-07 | Oil gas hanging unwheeling appearance regulating system |
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| CN201210185113.4A CN102673340B (en) | 2012-06-07 | 2012-06-07 | Oil gas hanging unwheeling appearance regulating system |
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| CN102673340B CN102673340B (en) | 2016-05-11 |
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| CN103953680A (en) * | 2014-03-20 | 2014-07-30 | 中国北方车辆研究所 | Modularized adjustable temperature compensation system for suspension |
| CN104057797A (en) * | 2013-03-22 | 2014-09-24 | 刘胜 | Intelligent hydraulic suspension unit and control method thereof |
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| CN105736488A (en) * | 2016-03-24 | 2016-07-06 | 中国北方车辆研究所 | Single-set dual-function cylinder constant delivery pump vehicle posture adjusting system |
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| CN105774460A (en) * | 2016-03-24 | 2016-07-20 | 中国北方车辆研究所 | Work procedure for vehicle posture adjusting system |
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| CN106739914A (en) * | 2016-12-24 | 2017-05-31 | 郑州新大方重工科技有限公司 | A kind of electrical system and control method for engineering truck suspension lifting system |
| CN106739913A (en) * | 2016-11-15 | 2017-05-31 | 徐州徐工汽车制造有限公司 | A kind of hydro pneumatic suspension electric control gear for being applied to five axle dump trucks |
| CN107379910A (en) * | 2017-06-21 | 2017-11-24 | 长安大学 | oil gas suspension hydraulic system |
| CN109484123A (en) * | 2018-09-07 | 2019-03-19 | 陕西中航气弹簧有限责任公司 | A kind of bodywork height regulating system and method |
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| CN111852965A (en) * | 2020-06-17 | 2020-10-30 | 中国北方车辆研究所 | Pressure-displacement comprehensive control system and method based on rocker arm suspension |
| CN113027976A (en) * | 2021-01-29 | 2021-06-25 | 中国北方车辆研究所 | Vehicle posture adjusting valve set |
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| CN104057797A (en) * | 2013-03-22 | 2014-09-24 | 刘胜 | Intelligent hydraulic suspension unit and control method thereof |
| CN104057797B (en) * | 2013-03-22 | 2016-03-30 | 刘胜 | Intelligent hydraulic suspension unit and control method thereof |
| CN103953680B (en) * | 2014-03-20 | 2016-08-17 | 中国北方车辆研究所 | Modularity adjustable hanging temperature compensation system |
| CN103953680A (en) * | 2014-03-20 | 2014-07-30 | 中国北方车辆研究所 | Modularized adjustable temperature compensation system for suspension |
| CN104999884A (en) * | 2015-07-23 | 2015-10-28 | 北京理工大学 | Hydraulic suspension composite suspension |
| CN104999884B (en) * | 2015-07-23 | 2018-11-30 | 北京理工大学 | A kind of hydraulic pressure suspension compound suspension |
| CN105757017A (en) * | 2016-03-24 | 2016-07-13 | 中国北方车辆研究所 | Load-sensitive proportional throttle valve for double-acting cylinders |
| CN105736488A (en) * | 2016-03-24 | 2016-07-06 | 中国北方车辆研究所 | Single-set dual-function cylinder constant delivery pump vehicle posture adjusting system |
| CN105774460A (en) * | 2016-03-24 | 2016-07-20 | 中国北方车辆研究所 | Work procedure for vehicle posture adjusting system |
| CN105882346A (en) * | 2016-03-24 | 2016-08-24 | 中国北方车辆研究所 | Principal pressure control valve unit for metering pump |
| 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 |
| CN105882346B (en) * | 2016-03-24 | 2018-07-27 | 中国北方车辆研究所 | Constant displacement pump main pressure control valve group |
| CN106567904A (en) * | 2016-11-10 | 2017-04-19 | 湖北航天技术研究院特种车辆技术中心 | Lifting hydro-pneumatic suspension hydraulic system |
| CN106739913A (en) * | 2016-11-15 | 2017-05-31 | 徐州徐工汽车制造有限公司 | A kind of hydro pneumatic suspension electric control gear for being applied to five axle dump trucks |
| CN106739914A (en) * | 2016-12-24 | 2017-05-31 | 郑州新大方重工科技有限公司 | A kind of electrical system and control method for engineering truck suspension lifting system |
| CN107379910A (en) * | 2017-06-21 | 2017-11-24 | 长安大学 | oil gas suspension hydraulic system |
| CN107379910B (en) * | 2017-06-21 | 2023-03-14 | 长安大学 | Hydro-pneumatic suspension hydraulic system |
| CN109484123A (en) * | 2018-09-07 | 2019-03-19 | 陕西中航气弹簧有限责任公司 | A kind of bodywork height regulating system and method |
| CN111122173A (en) * | 2018-10-31 | 2020-05-08 | 中国北方车辆研究所 | Restraint device for loading white body of cab |
| CN111852965A (en) * | 2020-06-17 | 2020-10-30 | 中国北方车辆研究所 | Pressure-displacement comprehensive control system and method based on rocker arm suspension |
| CN113027976A (en) * | 2021-01-29 | 2021-06-25 | 中国北方车辆研究所 | Vehicle posture adjusting valve set |
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