CN105150794A - Air suspension control system and air suspension control method - Google Patents
Air suspension control system and air suspension control method Download PDFInfo
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- CN105150794A CN105150794A CN201510639052.8A CN201510639052A CN105150794A CN 105150794 A CN105150794 A CN 105150794A CN 201510639052 A CN201510639052 A CN 201510639052A CN 105150794 A CN105150794 A CN 105150794A
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Abstract
The invention provides an air suspension control system and an air suspension control method, and belongs to the field of automobiles. The air suspension control system comprises an air storage tank, an air pump, air springs and one-way valves. Air moves in the set direction in the control process through all the components of the air suspension control system, the control over the height of an automobile body of an automobile is achieved through combination of a real-time height valve and a sensor, and the air exchange is disconnected in the automobile running state. Air in the air springs cannot flow out, inflation and deflation do not need to be repeatedly carried out, accordingly, the air pump does not need to be repeatedly started or stopped, and the service life of the air pump is effectively prolonged. Meanwhile, in the control manner, the structure is simple, the manufacturing cost is lower, maintaining is convenient, and firmness and durability are achieved; and the height of the automobile body is controlled more accurately.
Description
Technical field
The present invention relates to automotive field, in particular to a kind of Pneumatic Suspension control system and Pneumatic Suspension control method.
Background technology
Do not have the air suspension control system of the light truck of source of the gas and light bus substantially to divide two kinds in the market, one is Electronic Control Air Suspension System, and this mode is imported product mostly, install complicated, involve great expense, service expenditure is high; Be the airsuspension system that mechanical height valve controls, this mode utilizes time lagged type levelling valve to control bodywork height, and this levelling valve design is complicated, and waste source of the gas, fault rate is high, and ride height control is inaccurate.Do not have the air suspension automobile of source of the gas, the service life without oil gas pump is shorter, and make the use cost of airsuspension system higher, repair and replacement are comparatively frequent.
Summary of the invention
The invention provides a kind of Pneumatic Suspension control system and Pneumatic Suspension control method, the problems referred to above are improved.
The present invention is achieved in that
A kind of Pneumatic Suspension control system, comprising:
Storage tank, the top of described storage tank is provided with pressure switch;
Air pump, be communicated with by drying chamber between described air pump and described storage tank, by the first pipeline communication between described drying chamber and described storage tank, described air pump is provided with admission port, described drying chamber is provided with exhausr port, and described exhausr port is provided with the first normally open solenoid valve for controlling described exhaust open or closedown;
Air bellow, be communicated with by second pipe between described air bellow with described storage tank, by the 3rd pipeline communication between described first pipeline and described second pipe, connectivity points between described first pipeline and described 3rd pipeline is the first connectivity points, connectivity points between described second pipe and described 3rd pipeline is the second connectivity points, described second pipe is provided with the second normally open solenoid valve, described second normally open solenoid valve is arranged between described second connectivity points and described air bellow, described second connectivity points is provided with for detecting and regulating the instant levelling valve of described air spring height,
Sensor, whether described sensor starts for detecting automobile and can control described second electromagnetic valve unlatching or close;
Check valve, described check valve comprises the first check valve and the second check valve, described first check valve is arranged on described first pipeline, described first check valve is arranged between described first connectivity points and described storage tank, described first check valve flows to described drying chamber for limiting air from described storage tank, described second check valve is arranged on described 3rd pipeline, and described second check valve flows to described first pipeline for limiting air from described second pipe.
Further, described sensor is Hall switch, described instant levelling valve is provided with the fork that can swing up and down, whether described Hall switch is arranged on described fork and swings for detecting described fork, described Hall switch can control described second normally open solenoid valve, one end and the described instant levelling valve of described fork are hinged, described Hall switch is arranged on the middle part of described fork or one end away from described instant levelling valve of described fork, described fork is provided with elastic component, described elastic component makes described fork horizontally set and described fork can be made to rotate around pin jointed end.
Further, auto body is provided with can with the fluted disc of wheel synchronous axial system, described sensor setting is in the position corresponding with described fluted disc of auto body, and whether described sensor rotates for detecting described fluted disc and control described second electromagnetic valve.
Further, be provided with molecular sieve in described drying chamber, described molecular sieve can moisture in gas replenishment process in filtered air and can moisture be made in exhaust process to discharge with air.
Further, described air bellow is at least two, and the end of described second pipe is communicated with multiple described air bellow respectively.
Further, described admission port place is provided with air intake filter.
Further, also comprise four pin relays, described four pin relays comprise four interfaces, one of them interface is connected by electric wire with described pressure switch, another interface is connected by electric wire with described first normally open solenoid valve and described air pump respectively, two other interfacing ground of described four pin relays.
Further, described instant height valve housing is provided with anchor shaft, and described fork comprises the body of rod and change;
Described change is set in the outside of described anchor shaft, and the periphery of described change is provided with ratchet, and described elastic component is torsion spring and is arranged between described change and described anchor shaft;
One end of the close described anchor shaft of the described body of rod is provided with the collar, the periphery of described change is provided with annular recess, described collar turning set is located at the outside of described change and is embedded in described annular recess, the inside of the described collar is provided with two can by the ratchet of spring reset, described ratchet props up described ratchet respectively, two described ratchets are respectively used to limit relatively rotating in the both direction of the described collar and described change, described change is provided with the regulating part for controlling described ratchet, described regulating part can control described ratchet and depart from described ratchet,
The described collar is divided into two semi-rings, and one of them semi-ring is fixedly connected with the described body of rod, is respectively arranged with boss outside the two ends of described semi-ring, is bolted between the boss of the correspondence of two described semi-rings.
A Pneumatic Suspension control method for above-mentioned Pneumatic Suspension control system, comprising:
Pre-aeration step: when automobile starting, pressure switch detects pressure, control air pump and start and the first normally open solenoid valve cuts out, air enters in storage tank by drying chamber and the first check valve under the effect of air pump;
Inflation regulating step: when external force is by the vehicle body of the automobile pressure end, the height reduction of air bellow, instant levelling valve controls second pipe and connects, and the air in storage tank enters in air bellow, regulate the height of air bellow, air bellow makes vehicle body reach the height of setting;
Lock step: when automobile enters motoring condition, sensor detects that automobile advances and passes through to drive Control second normally open solenoid valve to cut out, and now, second pipe is closed, and the air containment in storage tank and air bellow remains unchanged;
Venting regulating step: when external force departs from the vehicle body of automobile, air bellow makes vehicle body raise, the second pipe that instant levelling valve controls between air bellow and the second connectivity points is connected, and make the first normally open solenoid valve open, the air in air bellow is discharged through the second normally open solenoid valve, instant levelling valve, the second check valve, drying chamber and the first normally open solenoid valve successively.
Further, molecular sieve is provided with in drying chamber, in pre-aeration step, air is through molecular sieve, air enters in the first pipeline by molecular sieve, and the moisture in air is stopped by molecular sieve and stays in drying chamber, in venting regulating step, air is reverses through molecular sieve, and the moisture in drying chamber is discharged under the drive of air.
Further, in described inflation regulating step, pressure switch starts when being subject to the pressure being less than 6kg, stops when being subject to the pressure of 8kg.
Compared with prior art, the invention has the beneficial effects as follows: the air realized in control process by all parts of Pneumatic Suspension control system is moved according to direction initialization, instant levelling valve realizes the control to the bodywork height of automobile in conjunction with Hall switch, and under motoring condition, disconnect air inerchange, air in air bellow cannot flow out, do not need repeatedly to carry out inflating and being vented yet, and then do not need repeatedly start and close air pump, the service life of effective prolongation air pump, and, this kind of mode structure is simple, manufacturing cost is lower, maintain easily, durable, the Altitude control of vehicle body is more accurate.
Accompanying drawing explanation
The Pneumatic Suspension control system schematic diagram that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the air pump of Fig. 1 and the control schematic diagram of the first normally open solenoid valve;
Fig. 3 is the control circuit figure of the Hall switch of Fig. 1;
Fig. 4 is the annexation schematic diagram between the fork of Fig. 1 and instant levelling valve;
Fig. 5 controls the schematic diagram of the second normally open solenoid valve for another sensor that the embodiment of the present invention provides.
Storage tank 101; Air pump 102; Air bellow 103; Pressure switch 104; Drying chamber 105; First pipeline 106; Admission port 107; Air intake filter 108; Exhausr port 109; First normally open solenoid valve 110; Four pin relays 111; Second pipe 112; 3rd pipeline 113; Second normally open solenoid valve 114; Instant levelling valve 115; Fork 116; Hall switch 117; Elastic component 118; Anchor shaft 119; The body of rod 120; Change 121; The collar 122; Ratchet 123; Ratchet 124; Boss 125; First check valve 126; Second check valve 127; Fluted disc 128; Support 129; Jam nut 130.
Detailed description of the invention
Do not have the air suspension control system of the light truck of source of the gas and light bus substantially to divide two kinds in the market, one is Electronic Control Air Suspension System, and this mode is imported product mostly, install complicated, involve great expense, service expenditure is high; Be the airsuspension system that mechanical height valve controls, this mode utilizes time lagged type levelling valve to control bodywork height, and this levelling valve design is complicated, and waste source of the gas, fault rate is high, and ride height control is inaccurate.Do not have the air suspension automobile of source of the gas, the service life without oil gas pump is shorter, and make the use cost of airsuspension system higher, repair and replacement are comparatively frequent.
Improve to make the problems referred to above, the invention provides a kind of Pneumatic Suspension control system and Pneumatic Suspension control method, comprise storage tank, air pump, air bellow and check valve, the air realized in control process by all parts of Pneumatic Suspension control system is moved according to direction initialization, instant levelling valve realizes the control to the bodywork height of automobile in conjunction with Hall switch, and under motoring condition, disconnect air inerchange, air in air bellow cannot flow out, do not need repeatedly to carry out inflating and being vented yet, and then do not need repeatedly start and close air pump, the service life of effective prolongation air pump, and, this kind of mode structure is simple, manufacturing cost is lower, maintain easily, durable, the Altitude control of vehicle body is more accurate.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
In describing the invention, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this invention product orientation of usually putting or position relationship when using, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
In describing the invention, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case above-mentioned term concrete meaning in the present invention can be understood.
The Pneumatic Suspension control system schematic diagram that Fig. 1 provides for the embodiment of the present invention; Fig. 2 is the air pump of Fig. 1 and the control schematic diagram of the first normally open solenoid valve; Fig. 3 is the control circuit figure of the Hall switch of Fig. 1; Fig. 4 is the annexation schematic diagram between the fork of Fig. 1 and instant levelling valve; Fig. 5 controls the schematic diagram of the second normally open solenoid valve for another sensor that the embodiment of the present invention provides.As Figure 1-Figure 5, embodiments provide a kind of Pneumatic Suspension control system, comprise storage tank 101, air pump 102, air bellow 103 and check valve.
Storage tank 101 can adopt existing structure, and gas is deposited in the effect of storage tank 101, after the gas in accumulator tank is compressed, form high pressure gas, and high pressure gas can enter in air bellow 103 by second pipe 112, keeps the height of air bellow 103.
As shown in Figure 1, the top of storage tank 101 is provided with pressure switch 104, and pressure switch 104 can experience pressure, and then controls other structures and start working.
As shown in Figure 1, be communicated with by drying chamber 105 between air pump 102 and storage tank 101, molecular sieve is provided with in drying chamber 105, molecular sieve a kind ofly comprises by the material of accurate and single small hole, may be used for adsorption of gases or liquid, enough little molecule can be adsorbed by duct, and larger molecule then can not, in this application, molecular sieve can moisture in gas replenishment process in filtered air and can moisture be made in exhaust process to discharge with air.
As shown in Figure 1, be communicated with by the first pipeline 106 between drying chamber 105 with storage tank 101, air pump 102 is provided with admission port 107, under the effect of air pump 102, admission port 107 may be used for air inlet, admission port 107 place is provided with air intake filter 108, the filtration that air intake filter 108 can carry out to a certain degree to air, reduces impurity in the air entered in Pneumatic Suspension control system.
As shown in Figure 1, drying chamber 105 is provided with exhausr port 109, exhausr port 109 is provided with first normally open solenoid valve 110 of opening for controlling exhausr port 109 or closing; When the first normally open solenoid valve 110 is opened, air can flow out from exhausr port 109 and realize exhaust, when the first normally open solenoid valve 110 cuts out, cannot be exhausted, keep the amount of air in Pneumatic Suspension control system comparatively stable.
As shown in Figure 2, pressure switch 104 controls the first normally open solenoid valve 110 and air pump 102 by four pin relays 111, be specially: four pin relays 111 comprise four interfaces, one of them interface is connected by electric wire with pressure switch 104, another interface is connected by electric wire with the first normally open solenoid valve 110 and air pump 102 respectively, two other interfacing ground of four pin relays 111.
Be communicated with by second pipe 112 between air bellow 103 with storage tank 101, air bellow 103 is at least two, the end bifurcated of second pipe 112 and being communicated with air bellow 103 respectively.
Be communicated with by the 3rd pipeline 113 between first pipeline 106 and second pipe 112, connectivity points between first pipeline 106 and the 3rd pipeline 113 is the first connectivity points, connectivity points between second pipe 112 and the 3rd pipeline 113 is the second connectivity points, can think that the two ends of the 3rd pipeline 113 are communicated with the centre portion of the first pipeline 106 and the centre portion of second pipe 112 respectively.
As shown in Figure 1, second pipe 112 is provided with the second normally open solenoid valve 114, second normally open solenoid valve 114 is at least one, if when only having second normally open solenoid valve 114, second normally open solenoid valve 114 is arranged between the second connectivity points and air bellow 103, if the second normally open solenoid valve 114 is two, then another one second normally open solenoid valve 114 is between instant levelling valve 115 and storage tank 101, second connectivity points is provided with for detecting and regulating air bellow 103 instant levelling valve 115 highly, automobile is also provided with the sensor that can be used in detection automobile and whether move, the second normally open solenoid valve 114 can be controlled after sensor detects automobile sport close, the form of sensor is varied, as long as can detect whether automobile moves, can select but be not limited to having structure: instant levelling valve 115 is provided with the fork 116 that can swing up and down, fork 116 is provided with the Hall switch 117 whether swung for detecting fork 116, Hall switch 117 can control the second normally open solenoid valve 114, when fork 116 swings up and down, represent that automobile travels, now the second normally open solenoid valve 114 cuts out, air in air bellow 103 cannot flow out, do not need repeatedly to carry out inflating and being vented yet, and then do not need repeatedly to start and close air pump 102, the service life of effective prolongation air pump 102, and, this kind of mode structure is simple, manufacturing cost is lower, maintain easily, durable, the Altitude control of vehicle body is more accurate.If the second normally open solenoid valve 114 is two, then the gas capacity in storage tank 101 also can remain unchanged, and effectively saves source of the gas.
Hall switch 117 is sensors, and physical circuit figure is with reference to Fig. 3, and this Hall switch 117 can detect very sensitive, easily and realize the control to the second normally open solenoid valve 114.
About the structure of fork 116, can adopt but be not limited to having structure:
One end and the instant levelling valve 115 of fork 116 are hinged, Hall switch 117 is arranged on the middle part of fork 116 or one end away from instant levelling valve 115 of fork 116, fork 116 is provided with elastic component 118, elastic component 118 makes fork 116 horizontally set and fork 116 can be made to rotate around pin jointed end.Need to guarantee a bit, fork 116 can swing up and down in perpendicular around a fixing rotational axis line, but balance position preferably remains on horizontal direction.Such as: the housing hinge of fork 116 and instant levelling valve 115, the base portion of fork 116 is provided with extension spring, extension spring is positioned at the top of fork 116, the two ends of extension spring are connected with the main body of fork 116 and automobile respectively, when fork 116 is to lower swing, extension spring applies pulling force upwards to fork 116, when fork 116 moves downward, relies on self gravitation to decline.
As the preferred version of this embodiment, as shown in Figure 4, the housing of instant levelling valve 115 is provided with anchor shaft 119, anchor shaft 119 can be one-body molded with the housing of instant levelling valve 115, also can be fixedly connected with by bolt etc.
Fork 116 comprises the body of rod 120 and change 121, and change 121 is set in the outside of anchor shaft 119, the periphery of change 121 is provided with ratchet 124, and elastic component 118 is torsion spring and is arranged between change 121 and anchor shaft 119; Change 121 can be rotated around anchor shaft 119, thus drive fork 116 to rotate around the axial line of anchor shaft 119, the two ends of torsion spring are connected with change 121 and anchor shaft 119 respectively, can limit the rotational angle in the both direction of change 121, and certain concrete structure can carry out according to actual needs.
One end of the close anchor shaft 119 of the body of rod 120 is provided with the collar 122, the periphery of change 121 is provided with annular recess, the collar 122 turning set is located at the outside of change 121 and is embedded in annular recess, the collar 122 can rotate ring 121 axial line rotate, relatively rotating of both realizations, the collar 122 is embedded and can limits the collar 122 move along the axial direction of change 121 in annular recess, can only relatively rotate therebetween.
Torsion spring there will be lax after using a period of time, and then makes the position of fork 116 sagging, is difficult to maintain comparatively suitable angle and position, therefore, in order to improve this problem, and special employing having structure:
The inside of the collar 122 is provided with two can by the ratchet 123 of spring reset, ratchet 123 props up ratchet 124 respectively, two ratchets 123 are respectively used to limit relatively rotating in the both direction of the collar 122 and change 121, change 121 is provided with the regulating part for controlling ratchet 123, regulating part can control ratchet 123 and depart from ratchet 124.Two ratchets 123 prop up ratchet 124 respectively, the now collar 122 and change 121 cannot relatively rotate, can be similar to and think that the two forms an entirety, as long as change 121 is relative to the invariant position of anchor shaft 119, then the position of fork 116 does not change, change 121 is when anchor shaft 119 rotates, and fork 116 entirety is rotated around anchor shaft 119, effectively maintains the balance position of fork 116, when torsion spring is lax cause fork 116 sagging time, rotating regulating part makes ratchet 123 depart from ratchet 124, the position of change 121 is fixed, lift fork 116, the collar 122 and change 121 are relatively rotated, the balance position of adjustment fork 116, one of them ratchet 123 can be only made to depart from ratchet 124 in the process, if adjusting position exceedes desired location, then can unclamp corresponding regulating part, rotate another one regulating part to make corresponding ratchet 123 depart from ratchet 124 to regulate, unclamping regulating part after adjustment completes makes ratchet 123 prop up ratchet 124, two ratchets 123 can certainly be made all to depart from ratchet 124 simultaneously, regulating part is unclamped after adjustment completes.The body of rod 120 can be made after having regulated to be positioned at comparatively suitable balance position, and the detection of Hall element more accurately facilitates, and extends the service life of the parts such as torsion spring.
Because the collar 122 is embedded in the annular recess of change 121, if without special construction, be difficult to realize installing, therefore: the collar 122 is divided into two semi-rings, one of them semi-ring is fixedly connected with the body of rod 120, be respectively arranged with boss 125 outside the two ends of semi-ring, be bolted between the boss 125 of the correspondence of two semi-rings.Two semi-rings can be made to be separated or assembling by screwing bolt, and then the dismounting realized between the collar 122 and change 121 or assembling, operating process is simple and convenient.
Whether sensor detection automobile moves and can also adopt other structures, remainder structure can be identical, as shown in Figure 5, the vehicle body of automobile is provided with fluted disc 128, fluted disc 128 can adopt metal to make, on the wheel that fluted disc 128 is arranged on automobile or on the transmission shaft of automobile or other positions, this position must be able to be rotated in automobile traveling process, the vehicle body of automobile is provided with support 129, support 129 is provided with through hole, sensor can adopt gear sensor, be located in through hole, gear sensor has been threaded two jam nuts 130, two jam nuts 130 lay respectively at the both sides of support 129, gear sensor can be arranged along the axis of fluted disc 128, when fluted disc 128 rotates with automobile, gear sensor can detect each tooth motion of fluted disc 128, thus judge that automobile is advanced, by control desk cut-off second normally open solenoid valve 114, if the second normally open solenoid valve 114 is two, two the second normally open solenoid valves 114 to be all arranged on second pipe 112 and to be positioned at the both sides of instant levelling valve 115, then instant second pipe 112 between levelling valve 115 and air bellow 103, second pipe 112 between instant levelling valve 115 and storage tank 101 is all closed, the air containment of air bellow 103 and storage tank 101 is remained unchanged, effective saving source of the gas, reduce the number of starts of air pump 102, the service life of air pump 102 is significantly improved.
Certainly, the form of sensor can also select prior art as required, as long as sensor can detect whether automobile moves, controls the second normally open solenoid valve 114 close when automobile sport.
As shown in Figure 1, check valve comprises the first check valve 126 and the second check valve 127, first check valve 126 is arranged on the first pipeline 106, first check valve 126 is arranged between the first connectivity points and storage tank 101, first check valve 126 flows to drying chamber 105 for limiting air from storage tank 101, second check valve 127 is arranged on the 3rd pipeline 113, and the second check valve 127 flows to the first pipeline 106 for limiting air from second pipe 112.Check valve can make air only can move along a direction, oppositely ends, guarantees that the air flow in Pneumatic Suspension control system meets the requirements.
Accordingly, present invention also offers a kind of Pneumatic Suspension control method, the method uses above-mentioned Pneumatic Suspension control system, and being Hall element with sensor and detecting the structure whether fork swing is example, and concrete steps are:
Pre-aeration step: when automobile starting, pressure switch 104 detects pressure, pressure switch 104 starts when being subject to the pressure being less than 6kg, stop when being subject to the pressure of 8kg, control air pump 102 start and the first normally open solenoid valve 110 cuts out, air enters in storage tank 101 by drying chamber 105 and the first check valve 126 under the effect of air pump 102; In this process, air is through molecular sieve, and air enters in the first pipeline 106 by molecular sieve, and the moisture in air is stopped by molecular sieve and stays in drying chamber 105,
Inflation regulating step: when external force is by the vehicle body of the automobile pressure end, the height reduction of air bellow 103, instant levelling valve 115 controls second pipe 112 and connects, air in storage tank 101 enters in air bellow 103, regulate the height of air bellow 103, air bellow 103 makes vehicle body reach the height of setting;
Lock step: when automobile enters motoring condition, fork 116 drives and swings up and down, Hall switch 117 is detected the swinging signal of fork 116 and is closed by driving Control second normally open solenoid valve 114, now, second pipe 112 is closed, and the air containment in storage tank 101 and air bellow 103 remains unchanged;
Venting regulating step: when external force departs from the vehicle body of automobile, air bellow 103 makes vehicle body raise, the second pipe 112 that instant levelling valve 115 controls between air bellow 103 and the second connectivity points is connected, and make the first normally open solenoid valve 110 open, the air in air bellow 103 is discharged through the second normally open solenoid valve 114, instant levelling valve 115, second check valve 127, drying chamber 105 and the first normally open solenoid valve 110 successively.In this process, air is reverses through molecular sieve, and the moisture in drying chamber 105 is discharged under the drive of air.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Pneumatic Suspension control system, is characterized in that, comprising:
Storage tank, the top of described storage tank is provided with pressure switch;
Air pump, be communicated with by drying chamber between described air pump and described storage tank, by the first pipeline communication between described drying chamber and described storage tank, described air pump is provided with admission port, described drying chamber is provided with exhausr port, and described exhausr port is provided with the first normally open solenoid valve for controlling described exhaust open or closedown;
Air bellow, be communicated with by second pipe between described air bellow with described storage tank, by the 3rd pipeline communication between described first pipeline and described second pipe, connectivity points between described first pipeline and described 3rd pipeline is the first connectivity points, connectivity points between described second pipe and described 3rd pipeline is the second connectivity points, described second pipe is provided with the second normally open solenoid valve, described second normally open solenoid valve is arranged between described second connectivity points and described air bellow, described second connectivity points is provided with for detecting and regulating the instant levelling valve of described air spring height,
Sensor, whether described sensor starts for detecting automobile and can control described second electromagnetic valve unlatching or close;
Check valve, described check valve comprises the first check valve and the second check valve, described first check valve is arranged on described first pipeline, described first check valve is arranged between described first connectivity points and described storage tank, described first check valve flows to described drying chamber for limiting air from described storage tank, described second check valve is arranged on described 3rd pipeline, and described second check valve flows to described first pipeline for limiting air from described second pipe.
2. Pneumatic Suspension control system according to claim 1, it is characterized in that, described sensor is Hall switch, described instant levelling valve is provided with the fork that can swing up and down, whether described Hall switch is arranged on described fork and swings for detecting described fork, described Hall switch can control described second normally open solenoid valve, one end and the described instant levelling valve of described fork are hinged, described Hall switch is arranged on the middle part of described fork or one end away from described instant levelling valve of described fork, described fork is provided with elastic component, described elastic component makes described fork horizontally set and described fork can be made to rotate around pin jointed end.
3. Pneumatic Suspension control system according to claim 1, it is characterized in that, auto body is provided with can with the fluted disc of wheel synchronous axial system, described sensor setting is in the position corresponding with described fluted disc of auto body, and whether described sensor rotates for detecting described fluted disc and control described second electromagnetic valve.
4. Pneumatic Suspension control system according to claim 1, is characterized in that, described air bellow is at least two, and the end of described second pipe is communicated with multiple described air bellow respectively.
5. Pneumatic Suspension control system according to claim 1, it is characterized in that, molecular sieve is provided with in described drying chamber, described molecular sieve can moisture in gas replenishment process in filtered air and can moisture be made in exhaust process to discharge with air, and described admission port place is provided with air intake filter.
6. Pneumatic Suspension control system according to claim 1, it is characterized in that, also comprise four pin relays, described four pin relays comprise four interfaces, one of them interface is connected by electric wire with described pressure switch, another interface is connected by electric wire with described first normally open solenoid valve and described air pump respectively, two other interfacing ground of described four pin relays.
7. Pneumatic Suspension control system according to claim 2, is characterized in that, described instant height valve housing is provided with anchor shaft, and described fork comprises the body of rod and change;
Described change is set in the outside of described anchor shaft, and the periphery of described change is provided with ratchet, and described elastic component is torsion spring and is arranged between described change and described anchor shaft;
One end of the close described anchor shaft of the described body of rod is provided with the collar, the periphery of described change is provided with annular recess, described collar turning set is located at the outside of described change and is embedded in described annular recess, the inside of the described collar is provided with two can by the ratchet of spring reset, described ratchet props up described ratchet respectively, two described ratchets are respectively used to limit relatively rotating in the both direction of the described collar and described change, described change is provided with the regulating part for controlling described ratchet, described regulating part can control described ratchet and depart from described ratchet,
The described collar is divided into two semi-rings, and one of them semi-ring is fixedly connected with the described body of rod, is respectively arranged with boss outside the two ends of described semi-ring, is bolted between the boss of the correspondence of two described semi-rings.
8. use a Pneumatic Suspension control method for the Pneumatic Suspension control system described in claim 1-7 any one, it is characterized in that, comprising:
Pre-aeration step: when automobile starting, pressure switch detects pressure, control air pump and start and the first normally open solenoid valve cuts out, air enters in storage tank by drying chamber and the first check valve under the effect of air pump;
Inflation regulating step: when external force is by the vehicle body of the automobile pressure end, the height reduction of air bellow, instant levelling valve controls second pipe and connects, and the air in storage tank enters in air bellow, regulate the height of air bellow, air bellow makes vehicle body reach the height of setting;
Lock step: when automobile enters motoring condition, sensor detects that automobile advances and passes through to drive Control second normally open solenoid valve to cut out, and now, second pipe is closed, and the air containment in storage tank and air bellow remains unchanged;
Venting regulating step: when external force departs from the vehicle body of automobile, air bellow makes vehicle body raise, the second pipe that instant levelling valve controls between air bellow and the second connectivity points is connected, and make the first normally open solenoid valve open, the air in air bellow is discharged through the second normally open solenoid valve, instant levelling valve, the second check valve, drying chamber and the first normally open solenoid valve successively.
9. Pneumatic Suspension control method according to claim 8, it is characterized in that, molecular sieve is provided with in drying chamber, in pre-aeration step, air is through molecular sieve, and air enters in the first pipeline by molecular sieve, moisture in air is stopped by molecular sieve and stays in drying chamber, in venting regulating step, air is reverses through molecular sieve, and the moisture in drying chamber is discharged under the drive of air.
10. Pneumatic Suspension control method according to claim 8, is characterized in that, in described inflation regulating step, pressure switch starts when being subject to the pressure being less than 6kg, stops when being subject to the pressure of 8kg.
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