CN102139612B - Vehicle as well as method and device for leveling hydro-pneumatic suspension of same - Google Patents
Vehicle as well as method and device for leveling hydro-pneumatic suspension of same Download PDFInfo
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- CN102139612B CN102139612B CN 201010108165 CN201010108165A CN102139612B CN 102139612 B CN102139612 B CN 102139612B CN 201010108165 CN201010108165 CN 201010108165 CN 201010108165 A CN201010108165 A CN 201010108165A CN 102139612 B CN102139612 B CN 102139612B
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Abstract
The invention discloses a method for leveling a hydro-pneumatic suspension, which is used for leveling suspension cylinders of a hydro-pneumatic suspension. The method comprises the following steps: detecting the relative position of a cylinder lever and a cylinder barrel of one suspension cylinder; judging the relation between the suspension cylinder and a preset mid-position, and injecting oil into an upper cavity of the suspension cylinder and discharging the oil from a lower cavity of the suspension cylinder if the suspension cylinder is higher than the mid-position; if the suspension cylinder is lower than the mid-position, injecting oil into the lower cavity of the suspension cylinder and discharging the oil from the upper cavity of the suspension cylinder; if the suspension cylinder is located at the mid-position, stopping leveling; and circulating the steps until all suspension cylinders are located at the mid-position. By utilizing the leveling method, a plurality of suspension cylinders can be automatically leveled at the same time, thus obviously improving leveling efficiency and leveling quality of the hydro-pneumatic suspension. The invention further provides a leveling device using the leveling method as well as a vehicle equipped with the device. By utilizing the leveling device, vibration reduction performance and comfortability of the vehicle are enhanced.
Description
Technical field
The present invention relates to the leveling vehicle field, particularly relate to a kind of leveling method and leveling equipment of hydro pneumatic suspension.In addition, the invention still further relates to a kind of vehicle that comprises the leveling equipment of above-mentioned hydro pneumatic suspension.
Background technology
Hydro pneumatic suspension becomes one of main direction of special vehicle and construction machinery and equipment research because of its good cushioning performance that has with by performance, has good development prospect.Can realize car body lifting, front and back pitching and the function that tilts by repairing or oil extraction to the suspension oil cylinder on the axletree, this has created condition for special ground such as the road surface that obstacle is arranged by the top, tilted road surfaces, improve the obstacle climbing ability of vehicle, improved the crossing ability of vehicle.And for general flat road surface or broken terrain, what then emphasize is the cushioning performance of hydro pneumatic suspension.Therefore before general road is travelled, need hydro pneumatic suspension is carried out leveling, make the suspension oil cylinder obtain unified best meta position, the car body balance, the cushioning performance of hydro pneumatic suspension and ride comfort performance are best when travelling.
Please refer to Fig. 1, Fig. 1 is the assembly relation scheme drawing between hydro pneumatic suspension and vehicle frame and the vehicle body in a kind of typical multiple-axle vehicle.
Among the figure, the two ends of an axletree are respectively equipped with two suspension oil cylinders 11, and the cylinder barrel of suspension oil cylinder 11 and axletree 12 are hinged, and cylinder bar and the car body 13 of suspension oil cylinder 11 are hinged.Sensor 14 is installed on the protecting sleeve of suspension oil cylinder 11, and the position of 14 pairs of suspension oil cylinders 11 of sensor is detected.According to detection signal can carry out leveling to suspension oil cylinder 11, to reach the purpose of leveling vehicle.
At present, the leveling method of hydro pneumatic suspension is manual leveling, rises switch, suspension by the manual operation suspension and falls switch control suspension valve group, and then repairing, the oil extraction of suspension oil cylinder 11 realized the lifting of suspension oil cylinder 11.Need operating personal successively single suspension oil cylinder 11 to be judged, successively each suspension oil cylinder 11 carried out aforesaid operations, when all suspension oil cylinders 11 all are in same position, leveling vehicle.This leveling system function is simple, and a people can not operate all suspension oil cylinders 11 simultaneously.So manual leveling of the prior art system is that the point of single suspension oil cylinder 11 is regulated, and can't satisfy fast and accurately horizontal adjustment requirement of vehicle.
And because the time delay of operation, the leveling process might cause moving overshoot, need artificial repeatedly operation just can reach the leveling vehicle state, cause leveling process length consuming time, the continuous repetitive operation of needs of suspension oil cylinder 11, leveling efficient is low, can't be used for the high precision leveling.Simultaneously, the manual leveling system proposes high requirement to the operating skill of operating personal, and it is larger that its leveling quality is affected by the operating skill of operating personal.
Therefore, how improving leveling efficient and the leveling quality of adjustable hydro pneumatic suspension, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The leveling method that the purpose of this invention is to provide a kind of hydro pneumatic suspension, this leveling method can be realized simultaneously automatic leveling of a plurality of suspension oil cylinders, and the leveling efficient of hydro pneumatic suspension and leveling quality all are improved significantly.Another object of the present invention provides a kind of vehicle of using the leveling equipment of above-mentioned leveling method and having this device, and cushioning performance and the travelling comfort of this vehicle are improved.
For achieving the above object, the invention provides a kind of leveling method of hydro pneumatic suspension, be used for the suspension oil cylinder of leveling hydro pneumatic suspension, may further comprise the steps:
11) detect the cylinder bar of suspension oil cylinder and the relative position of cylinder barrel;
12) judge the relation of described suspension oil cylinder and predetermined meta position, if described suspension oil cylinder is higher than described meta position, turn to step 131);
If described suspension oil cylinder is lower than described meta position, turn to step 132);
If described suspension oil cylinder is in described meta position, turn to step 133);
131) to the epicoele oiling of suspension oil cylinder and from its cavity of resorption oil extraction, and go back to step 11);
132) to the cavity of resorption oiling of suspension oil cylinder and from its epicoele oil extraction, and go back to step 11);
133) stop leveling.
Preferably, in step 11) in, the car body of described cylinder bar and described vehicle is hinged, and described cylinder bar is fixedly connected with upper sensor and lower sensor; When described suspension oil cylinder was in described meta position, the upper edge of described cylinder barrel was between the detection position of described upper sensor and described lower sensor; Whether detect the relative position relation that described cylinder barrel is judged described cylinder bar and cylinder barrel according to described upper sensor and described lower sensor.
Preferably, in step 131) and step 132) in, by rising electromagnetic valve and falling the oil mass that electromagnetic valve is regulated described epicoele and described cavity of resorption.
Preferably, step 133) after, further comprising the steps of:
14) carry the leveling signal of described function unit to telltale.
The present invention also provides a kind of leveling equipment of hydro pneumatic suspension, is used for the suspension oil cylinder of leveling hydro pneumatic suspension, comprising: detection part, for detection of the cylinder bar of described suspension oil cylinder and the relative position of cylinder barrel; Function unit, its input end connects the mouth of described detection part; Execution unit, its input end connects the signal output part of described function unit; If described suspension oil cylinder is higher than predetermined meta position, function unit by execution unit to the epicoele oiling of described suspension oil cylinder and from its cavity of resorption oil extraction; If described suspension oil cylinder is lower than predetermined meta position, function unit by execution unit to the cavity of resorption oiling of described suspension oil cylinder and from its epicoele oil extraction.
Preferably, the car body of described cylinder bar and described vehicle is hinged, and described detection part comprises upper sensor and lower sensor, and described upper sensor is all captiveed joint with described cylinder bar with described lower sensor; The upper edge of described cylinder barrel is between described upper sensor and described lower sensor the time, and described suspension oil cylinder is in the meta position.
Preferably, described execution unit comprises and rises electromagnetic valve and fall electromagnetic valve.
Preferably, also comprise the telltale be used to the leveling signal that receives described function unit, in order to show the location status of described suspension oil cylinder.
On the basis of above-mentioned leveling equipment, the present invention further provides a kind of vehicle, comprise the leveling equipment of above-mentioned each described hydro pneumatic suspension.
Preferably, comprise the first axletree that is positioned at foremost and the second axletree that is positioned at rearmost end, the suspension oil cylinder at the suspension oil cylinder at described the first axletree two ends and described the second axletree two ends is equipped with described leveling equipment.
The invention provides a kind of leveling method of hydro pneumatic suspension, be used for the suspension oil cylinder of leveling hydro pneumatic suspension, may further comprise the steps:
11) detect the cylinder bar of suspension oil cylinder and the relative position of cylinder barrel;
12) judge the relation of described suspension oil cylinder and predetermined meta position, if described suspension oil cylinder is higher than described meta position, turn to step 131);
If described suspension oil cylinder is lower than described meta position, turn to step 132);
If described suspension oil cylinder is in described meta position, turn to step 133);
131) to the epicoele oiling of suspension oil cylinder and from its cavity of resorption oil extraction, go back to step 11);
132) to the cavity of resorption oiling of suspension oil cylinder and from its epicoele oil extraction, go back to step 11);
133) stop leveling.
The leveling method of the hydro pneumatic suspension that the invention described above provides, the hydraulic pressure oil mass of the epicoele of suspension oil cylinder and cavity of resorption is adjusted in the Vehicle Driving Cycle process, make the relative position adjustment of cylinder bar and the cylinder barrel of suspension oil cylinder, the whole height of suspension oil cylinder is adjusted, and in height adjustment, detect the cylinder bar of suspension oil cylinder and the relative position of cylinder barrel, and judge according to detection signal whether the suspension oil cylinder is in the meta position, again according to the epicoele of judged result control suspension oil cylinder and the hydraulic pressure oil mass of cavity of resorption.This cyclic process constantly repeats, until the suspension oil cylinder is in the meta position just.With respect to the manual leveling process, the leveling precision of this leveling method energy Effective Raise hydro pneumatic suspension, and also reaction is quick, time saving and energy saving, and the overshoot impact that having reduced lags behind brings has improved leveling efficient.In addition, this leveling method can be in a plurality of suspension oil cylinders of vehicle uses simultaneously, makes a plurality of suspension oil cylinders can simultaneously leveling in the Vehicle Driving Cycle process, thereby improves the cushioning performance of vehicle, and the travelling comfort of vehicle is improved.
A kind of preferred embodiment in, in step 11) in, the cylinder bar of described suspension oil cylinder and the relative position of cylinder barrel detect by upper sensor and lower sensor; Upper sensor is all captiveed joint with the cylinder bar of suspension oil cylinder with lower sensor, and the car body of cylinder bar and vehicle is hinged, and when the suspension oil cylinder was in the meta position, the upper edge of described cylinder barrel was between described upper sensor and described lower sensor; Whether detect the relative position relation that described cylinder barrel is judged described cylinder bar and cylinder barrel according to described upper sensor and described lower sensor.When upper sensor and lower sensor all can't detect signal, the suspension oil cylinder was too high; When upper sensor and lower sensor all detected signal, the suspension oil cylinder was excessively low; Lower sensor detects signal, and upper sensor is when can't detect signal, and the suspension oil cylinder is in the meta position.This detection mode is identical with the leveling structure of suspension oil cylinder in the present technology, like this, just can realize this patent by present technology is done less improvement, thereby reduce the implementation cost of this patent.
The present invention also provides a kind of leveling equipment of hydro pneumatic suspension, and this leveling equipment comprises detection part, function unit and execution unit.Wherein, detection part is for detection of the cylinder bar of described suspension oil cylinder and the relative position of cylinder barrel, the input end of its mouth connection control unit; The signal output part of function unit connects the signal input part of execution unit, when the position of described suspension oil cylinder is higher than predetermined meta position, function unit by execution unit to the epicoele oiling of described suspension oil cylinder and from its cavity of resorption oil extraction; If described suspension oil cylinder is lower than predetermined meta position, function unit by execution unit to the cavity of resorption oiling of described suspension oil cylinder and from its epicoele oil extraction.Detect the cylinder bar of suspension oil cylinder and the relative position of cylinder barrel by detection part, and detection signal delivered to function unit, the position of being judged the suspension oil cylinder by function unit is too high, cross low or just in time be in meta, function unit flows to execution unit with judged result, make one oil-feed in the epicoele of execution unit control suspension oil cylinder and the cavity of resorption, the another one oil extraction, the relative position of cylinder bar and cylinder barrel is changed, detection part still detects it simultaneously, this process moves in circles, until the suspension oil cylinder reaches state of equilibrium, thus the purpose that realization is carried out leveling to the suspension oil cylinder.This process is carried out automatically, in the leveling process, be not subjected to the impact of manual operation, with respect to manual leveling, detection part can constantly detect in the course of the work, function unit can constantly be exported control signal to execution unit according to the detection signal of detection part, therefore, its leveling precision can obviously improve.Simultaneously, this leveling process can realize simultaneously that in a plurality of suspension oil cylinders make a plurality of suspension oil cylinders carry out simultaneously leveling, its leveling speed is fast, and leveling efficient is high, thereby the cushioning performance of the vehicle with this leveling equipment and ride quality are improved.
A kind of preferred embodiment in, described detection part comprises upper sensor and lower sensor, and between upper sensor and the lower sensor predetermined distance is arranged; The cylinder bar of suspension oil cylinder and the car body of vehicle are hinged, and described upper sensor is all captiveed joint with described cylinder bar with described lower sensor.Namely when the upper edge of cylinder barrel was between upper sensor and lower sensor, the suspension oil cylinder was in the meta position.In the suspension oil cylinder leveling process, upper sensor and lower sensor all provide detection signal to function unit, and when upper sensor and lower sensor all can't detect signal, the suspension oil cylinder was too high; When upper sensor and lower sensor all detected signal, the suspension oil cylinder was excessively low; Lower sensor detects signal and upper sensor when can't detect signal, and the suspension oil cylinder is in the meta position.This structure is identical with the suspension cylinder structure of manual leveling in the prior art, therefore, this part is not needed to make improvements the detection that just can realize the suspension oil cylinder, has reduced to implement the cost of this patent, is conducive to enforcement and the popularization of this patent.
In another preferred embodiment, leveling equipment provided by the present invention also comprises the telltale be used to the leveling signal that receives described function unit, in order to show the location status of described suspension oil cylinder.The operator may carry out proper operation by the signal that shows on the telltale, and the operator can be operated in the course of the work more accurately, thereby improves the reliability of vehicle control.
On the basis of the leveling equipment that above-mentioned hydro pneumatic suspension is provided, the present invention also provides a kind of vehicle that comprises above-mentioned leveling equipment; Because the leveling equipment of hydro pneumatic suspension has above-mentioned technique effect, the vehicle with this leveling equipment also has corresponding technique effect.
Description of drawings
Fig. 1 is the assembly relation scheme drawing between hydro pneumatic suspension and vehicle frame and the vehicle body in a kind of typical multiple-axle vehicle;
Fig. 2 is the hydraulic circuit diagram of a kind of specific embodiment of hydro pneumatic suspension leveling equipment provided by the present invention;
Fig. 3 is the hydraulic circuit diagram of the concrete embodiment of leveling equipment another kind provided by the present invention;
Fig. 4 is the diagram of circuit of leveling method the first specific embodiment of hydro pneumatic suspension provided by the present invention;
Fig. 5 is the diagram of circuit of leveling method the second specific embodiment of hydro pneumatic suspension provided by the present invention.
The specific embodiment
Core of the present invention provides a kind of leveling method of hydro pneumatic suspension, and this leveling method can be realized simultaneously automatic leveling of a plurality of suspension oil cylinders, and the leveling efficient of hydro pneumatic suspension and leveling quality all are improved significantly.Another core of the present invention provides a kind of vehicle of using the leveling equipment of above-mentioned leveling method and having this device, and its cushioning performance and travelling comfort are improved.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 2 is the hydraulic circuit diagram of a kind of specific embodiment of hydro pneumatic suspension leveling equipment provided by the present invention.
Hydro pneumatic suspension leveling equipment provided by the present invention comprises detection part 2, function unit 3 and execution unit 4.Wherein, detection part 2 is for detection of the cylinder bar that goes out suspension oil cylinder 5 and the relative position of cylinder barrel, and detection signal delivered to function unit 3, it is higher, on the low side or just in time be in meta to judge the position of suspension oil cylinder 5 by function unit 3, when the relative position of cylinder bar and cylinder barrel was in the meta position, suspension oil cylinder 5 was in state of equilibrium; When the position of suspension oil cylinder is higher than the meta position, suspension oil cylinder 5 is too high; Function unit 3 flows to execution unit 4 with judged result, makes execution unit 4 make the epicoele oil-feed of suspension oil cylinder 5, makes simultaneously its cavity of resorption oil extraction; When the position of suspension oil cylinder 5 is lower than the meta position, suspension oil cylinder 5 is excessively low, and execution unit 4 makes the epicoele oil extraction of suspension oil cylinder 5, and the cavity of resorption oil-feed is to reach the purpose of adjusting suspension oil cylinder 5.
This process is carried out automatically, in the leveling process, be subjected to manually-operated affect less, with respect to manual leveling, detection part 2 can constantly detect in the course of the work, function unit 3 can constantly be exported control signals to execution unit 4 according to the detection signal of detection part 2, therefore, its leveling precision can obviously improve.Simultaneously, this leveling process can realize simultaneously that in a plurality of suspension oil cylinders 5 make a plurality of suspension oil cylinders 5 carry out simultaneously leveling, its leveling speed is fast, and leveling efficient is high, thereby the cushioning performance of the vehicle with this leveling equipment and ride quality are improved.
The upper and lower noun of locality that waits that this paper is related is to define take the relative position on vehicle and suspension oil cylinder 5 and ground as benchmark, and suspension oil cylinder 5 reduces, and the sense of motion during approach of vehicles ground is for lower; Otherwise then be upper.Be to be understood that the noun of locality that adopts should not limit the protection domain of this patent herein.Epicoele as herein described and cavity of resorption are to divide as the boundary take the piston of suspension oil cylinder, and the chamber that is positioned at described piston top is epicoele, and the chamber that is positioned at described piston bottom is cavity of resorption.
In a kind of concrete embodiment, detection part 2 can comprise upper sensor 21 and lower sensor 22, and between upper sensor 21 and the lower sensor 22 predetermined distance is arranged, the cylinder bar of suspension oil cylinder 5 and the car body of vehicle are hinged, upper sensor 21 is all captiveed joint with the cylinder bar with lower sensor 22, when the upper edge of cylinder barrel was between upper sensor 21 and lower sensor 22, suspension oil cylinder 5 was in the meta position.In the suspension oil cylinder 5 leveling processes, its cylinder barrel keeps motionless with respect to ground, and upper sensor 21 and lower sensor 22 be the upper and lower motion along with the motion of cylinder bar all, and detects the signal of cylinder barrel in motion process.When upper sensor 21 detects the cylinder barrel position signal of suspension oil cylinder 5, when namely upper sensor 21 and lower sensor 22 all detected signal, suspension oil cylinder 5 positions were excessively low; When lower sensor 22 does not detect the position signal of cylinder barrel, when namely upper sensor 21 and lower sensor 22 all can't detect signal, the position of suspension oil cylinder 5 was too high; When upper sensor 21 does not detect the cylinder barrel signal and lower sensor 22 when detecting the cylinder barrel signal, suspension oil cylinder 5 is in the meta position.
In the suspension oil cylinder 5 leveling processes, upper sensor 21 and lower sensor 22 all provide detection signal to function unit 3, and function unit 3 is according to the signal that detects, and judge that suspension oil cylinder 5 is higher, on the low side or are in the meta position.This structure is identical with suspension oil cylinder 5 structures of manual leveling in the prior art, therefore, this part is not needed to make improvements the detection that just can realize suspension oil cylinder 5, has reduced to implement the cost of this patent, is conducive to enforcement and the popularization of this patent.
Obviously, detection part 2 provided by the present invention includes but not limited to upper sensor 21 and lower sensor 22.For example detection part 2 can be an independent sensor, this sensor passes to function unit 3 with the position signal of the suspension oil cylinder 5 that detects, function unit 3 is judged whether suspension oil cylinder 5 is higher, on the low side or just is in the meta position according to position signal, and control execution unit 4 carries out corresponding actions.
In addition, captive joint herein can be captive joint indirectly; can have protecting sleeve such as suspension oil cylinder 5; upper sensor 21 is all captiveed joint with protecting sleeve with lower sensor 22, and protecting sleeve is captiveed joint with the cylinder bar, and such structure also can satisfy needs of the present invention.Above-mentioned upper sensor 21 and lower sensor 22 can be common approach switchs, and when it sensed signal, the signal that is delivered to function unit 3 can be low level; When not detecting signal, the signal that is delivered to function unit 3 can be high level.Perhaps different according to mode, transmission of signal is high level when sensing signal, transmits low level when responding to less than signal, also can satisfy requirement of the present invention.
And upper sensor 21 can not captiveed joint with the cylinder bar with lower sensor 22, for example can be installed on the cylinder barrel of suspension oil cylinder 5, and is static with respect to ground with cylinder barrel.During the motion of the cylinder bar of suspension oil cylinder 5, upper sensor 21 and lower sensor 22 detect the position of cylinder bars, according to the height of the position judgment suspension oil cylinder 5 of cylinder bar.Obviously, such structure also can satisfy requirement of the present invention.
Further, above-mentioned execution unit 4 can comprise and rise electromagnetic valve 41 and fall electromagnetic valve 42, crosses when low when suspension oil cylinder 5 positions, rises electromagnetic valve 41 electric, the oil-feed of control cavity of resorption, epicoele oil extraction, 5 risings of suspension oil cylinder; When suspension oil cylinder 5 positions were too high, falling electromagnetic valve 42 must be electric, the oil extraction of control cavity of resorption, and the epicoele oil-feed, suspension oil cylinder 5 reduces.
In a kind of concrete embodiment, the detection signal mouth that upper sensor 21 is connected with lower sensor all is connected with the input end of function unit 3; The oil inlet that rises electromagnetic valve 41 is connected with oil inlet, and its first oil outlet is connected with the cavity of resorption of hanging oil cylinder 5, and the second oil outlet is connected with energy storage 6, and the 3rd oil outlet is connected with the epicoele of hanging oil cylinder 5.The oil outlet that falls electromagnetic valve 42 is connected with oil return pipe, and its first oil inlet is connected with the cavity of resorption of hanging oil cylinder 5, and the second oil inlet is connected with energy storage 6, and its 3rd oil inlet is connected with the epicoele of hanging oil cylinder 5.
When upper sensor 21 detects the cylinder barrel signal of suspension oil cylinder 5, car body is excessively low, switch closure, rise electromagnetic valve 41 electric, make the cavity of resorption oil-feed that rises electromagnetic valve 41, the cylinder bar is controlled corresponding suspension oil cylinder 5 and is raise with respect to the ground upward movement, the car body position raises; When lower sensor 22 does not detect the cylinder barrel signal of suspension oil cylinder 5, car body is too high, and switch disconnects, fall electromagnetic valve 42 simultaneously electric, make the epicoele oil-feed of falling electromagnetic valve 42, the cylinder bar moves downward with respect to ground, and then control corresponding suspension oil cylinder 5 and reduce, the car body position reduces; When upper sensor 21 does not detect the cylinder barrel signal and lower sensor 22 can detect the cylinder barrel signal time, suspension oil cylinder 5 is in the meta position, reaches the leveling effect, need not to adjust again.Repeat this process, until all leveling of suspension oil cylinder 5, then vehicle levels in the vehicle.
Above-mentioned rise electromagnetic valve 41 and fall electromagnetic valve 42 can be with common 3-position 4-way solenoid directional control valve replacement, according to the leveling needs of suspension oil cylinder 5, the control signal of function unit 3 flowed to the 3-position 4-way solenoid directional control valve.By the epicoele of 3-position 4-way solenoid directional control valve control suspension oil cylinder 5 and oil-feed or the oil extraction of cavity of resorption, to reach the purpose of leveling.
On the basis of above-mentioned leveling equipment, leveling equipment provided by the present invention can further include the telltale 7 for the leveling signal that receives function unit 3, in order to show the location status of suspension oil cylinder 5.The operator can carry out proper operation by the signal that shows on the telltale 7, and the operator can be operated in the course of the work more accurately, thereby improves the reliability of vehicle control.
Obviously, can do to improve further to aforementioned display device 7.Can be touch display screen such as telltale 7, it is more convenient that the workman is operated.Simultaneously, also can adopt indicator lamp, prompting bell etc., to show the leveling state of suspension oil cylinder 5, the prompting workman is operating as basic purpose.
Please refer to Fig. 3, Fig. 3 is the hydraulic circuit diagram of the concrete embodiment of leveling equipment another kind provided by the present invention.
In the another kind of specific embodiment, leveling equipment provided by the present invention can comprise the first suspension oil cylinder 5-1 and the second suspension oil cylinder 5-2, and the cavity of resorption of the first suspension oil cylinder 5-1 is communicated with the epicoele of the first suspension oil cylinder 5-2.Make the first suspension oil cylinder 5-1 and the second suspension oil cylinder 5-2 realize uniting and adjustment, thereby improve the regulating effect of car load, improve the adjusting efficient of car load.
On the basis of the leveling equipment that above-mentioned hydro pneumatic suspension is provided, the present invention also provides a kind of vehicle that comprises above-mentioned leveling equipment, because the leveling equipment of hydro pneumatic suspension has above-mentioned technique effect, the vehicle with this leveling equipment also has corresponding technique effect.
Particularly, above-mentioned vehicle comprises the first axletree that is positioned at foremost and is positioned at the second axletree of rearmost end that the suspension oil cylinder 5 at the suspension oil cylinder 5 at the first axletree two ends and the second axletree two ends is equipped with leveling equipment.Upper sensor 21 and lower sensor 22 are installed on respectively on the protecting sleeve of suspension oil cylinder 5, make all efficiently leveling of suspension oil cylinder 5 on the first axletree and the second axletree.Obviously, above-mentioned vehicle can comprise the 3rd axletree, the 4th axletree ... be that hydro pneumatic suspension leveling equipment provided by the present invention can be used for multiple-axle vehicle, and can be on all suspension oil cylinders or certain several suspension oil cylinder installation and measuring parts 2, each certain several suspension oil cylinder of all suspension oil cylinders are carried out leveling, reach the purpose of the efficient leveling of car load.
Based on the leveling equipment of aforementioned hydro pneumatic suspension, below in conjunction with Fig. 4 and diagram of circuit shown in Figure 5 leveling method provided by the present invention is described.Wherein, Fig. 4 is the diagram of circuit of leveling method the first specific embodiment of hydro pneumatic suspension provided by the present invention.
In the concrete embodiment of the first, the leveling method of hydro pneumatic suspension provided by the present invention comprises the steps:
Step S11:
Detect the cylinder bar of suspension oil cylinder 5 and the relative position of cylinder barrel by detection part 2, and detection signal is delivered to function unit 3.In a kind of concrete embodiment, can detect by upper sensor 21 and lower sensor 22, and upper sensor 21 is all captiveed joint with the cylinder bar of suspension oil cylinder 5 with lower sensor 22, makes upper sensor 21 and lower sensor 22 all detect the position of the cylinder barrel of suspension oil cylinder 5.
Step S12:
The relation of the position of being judged suspension oil cylinders 5 by function unit 3 and predetermined meta position, if the position of suspension oil cylinder 5 is higher than predetermined meta position, then suspension oil cylinder 5 is too high, turns to step S131; If be lower than predetermined meta position, then suspension oil cylinder 5 is excessively low, turns to step S132; If the position of suspension oil cylinder 5 is in the meta position just, turn to step S133; Function unit 3 flows to execution unit 4 with judged result.
Step S131:
If suspension oil cylinder 5 is too high, to its epicoele oiling and from its cavity of resorption oil extraction, the position of suspension oil cylinder 5 is reduced, and go back to step 11);
Step S132:
If suspension oil cylinder 5 is excessively low, to its cavity of resorption oiling and from its epicoele oil extraction, the position of suspension oil cylinder 5 is raise, and go back to step 11);
Step S133:
If suspension oil cylinder 5 is in the meta position, stop leveling.
This process is carried out automatically, in the leveling process, be not subjected to manually-operated the impact, with respect to manual leveling, detection part 2 can constantly detect in the course of the work, function unit 3 can constantly be exported control signals to execution unit 4 according to the detection signal of detection part 2, therefore, its leveling precision can obviously improve.Simultaneously, this leveling process can realize simultaneously that in a plurality of suspension oil cylinders 5 make a plurality of suspension oil cylinders 5 carry out simultaneously leveling, its leveling speed is fast, and leveling efficient is high, thereby the cushioning performance of the vehicle with this leveling equipment and ride quality are improved.
Please refer to Fig. 5, Fig. 5 is the diagram of circuit of leveling method the second specific embodiment of hydro pneumatic suspension provided by the present invention.
In the concrete embodiment of the first, the leveling method of hydro pneumatic suspension provided by the present invention comprises the steps:
Step S21:
Detect the cylinder bar of suspension oil cylinder 5 and the relative position of cylinder barrel by detection part 2, and detection signal is delivered to function unit 3.In a kind of concrete embodiment, can detect by upper sensor 21 and lower sensor 22, and upper sensor 21 is all captiveed joint with the cylinder bar of suspension oil cylinder 5 with lower sensor 22, makes upper sensor 21 and lower sensor 22 all detect the position of the cylinder barrel of suspension oil cylinder 5.
Step S22:
The relation of the position of being judged suspension oil cylinders 5 by function unit 3 and predetermined meta position, if the position of suspension oil cylinder 5 is higher than predetermined meta position, then suspension oil cylinder 5 is too high, turns to step S231; If be lower than predetermined meta position, then suspension oil cylinder 5 is excessively low, turns to step S232; If the position of suspension oil cylinder 5 is in the meta position just, turn to step S233; Function unit 3 flows to execution unit 4 with judged result.
Step S231:
If suspension oil cylinder 5 is too high, to its epicoele oiling and from its cavity of resorption oil extraction, the position of suspension oil cylinder 5 is reduced, and go back to step 21);
Step S232:
If suspension oil cylinder 5 is excessively low, to its cavity of resorption oiling and from its epicoele oil extraction, the position of suspension oil cylinder 5 is raise, and go back to step 21);
Step S233:
If suspension oil cylinder 5 is in the meta position, stop leveling.
By to the epicoele of suspension oil cylinder 5 and the one oil-feed in the cavity of resorption, another one oil extraction, make the relative position adjustment of cylinder bar and the cylinder barrel of suspension oil cylinder 5, make simultaneously the whole height adjustment of suspension oil cylinder 5, reach the purpose of leveling.Carry out above-mentioned steps S21 and S22 simultaneously in the process that suspension oil cylinder 5 is adjusted, circulation is regulated to reach the purpose that suspension oil cylinder 5 is carried out leveling.
Step S24:
Behind step S233, the leveling signal of pipage control parts 3 is to telltale.Make the operator carry out proper operation by the signal that shows on the telltale 7, thereby improve operator's operating reliability in the course of the work.
More than vehicle provided by the present invention and hydro pneumatic suspension leveling equipment thereof and leveling method are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (8)
1. the leveling method of a hydro pneumatic suspension is used for the suspension oil cylinder of leveling hydro pneumatic suspension, it is characterized in that, may further comprise the steps:
11) detect the cylinder bar of suspension oil cylinder and the relative position of cylinder barrel;
12) judge the relation of described suspension oil cylinder and predetermined meta position, if described suspension oil cylinder is higher than described meta position, turn to step 131);
If described suspension oil cylinder is lower than described meta position, turn to step 132);
If described suspension oil cylinder is in described meta position, turn to step 133);
131) to the epicoele oiling of suspension oil cylinder and from its cavity of resorption oil extraction, and go back to step 11);
132) to the cavity of resorption oiling of suspension oil cylinder and from its epicoele oil extraction, and go back to step 11);
133) stop leveling;
The car body of described cylinder bar and vehicle is hinged, and described cylinder bar is fixedly connected with upper sensor and lower sensor; When described suspension oil cylinder was in described meta position, the upper edge of described cylinder barrel was between the detection position of described upper sensor and described lower sensor;
Suspension oil cylinder (5) has protecting sleeve, and upper sensor (21) is all captiveed joint with protecting sleeve with lower sensor (22), and protecting sleeve is captiveed joint with the cylinder bar;
In step 11), whether detect the relative position relation that described cylinder barrel is judged described cylinder bar and cylinder barrel according to described upper sensor and described lower sensor.
2. the leveling method of hydro pneumatic suspension according to claim 1 is characterized in that, in step 131) and step 132) in, by rising electromagnetic valve and falling the oil mass that electromagnetic valve is regulated described epicoele and described cavity of resorption.
3. the leveling method of hydro pneumatic suspension according to claim 1 and 2 is characterized in that step 133) after, further comprising the steps of:
14) the leveling signal of pipage control parts is to telltale.
4. the leveling equipment of a hydro pneumatic suspension is used for the suspension oil cylinder (5) of leveling hydro pneumatic suspension, it is characterized in that, comprising:
Detection part (2) is for detection of the cylinder bar of described suspension oil cylinder (5) and the relative position of cylinder barrel;
Function unit (3), its input end connects the mouth of described detection part (2);
Execution unit (4), its input end connects the signal output part of described function unit (3);
If described suspension oil cylinder is higher than predetermined meta position, function unit (3) passes through execution unit (4) to the epicoele oiling of described suspension oil cylinder and from its cavity of resorption oil extraction; If described suspension oil cylinder is lower than predetermined meta position, function unit (3) passes through execution unit (4) to the cavity of resorption oiling of described suspension oil cylinder and from its epicoele oil extraction;
The car body of described cylinder bar and vehicle is hinged, and described detection part (2) comprises upper sensor (21) and lower sensor (22), and described upper sensor (21) is all captiveed joint with described cylinder bar with described lower sensor (22); When the upper edge of described cylinder barrel was positioned between described upper sensor (21) and the described lower sensor (22), described suspension oil cylinder (5) was in the meta position;
Suspension oil cylinder (5) has protecting sleeve, and upper sensor (21) is all captiveed joint with protecting sleeve with lower sensor (22), and protecting sleeve is captiveed joint with the cylinder bar.
5. the leveling equipment of hydro pneumatic suspension according to claim 4 is characterized in that, described execution unit (4) comprises and rises electromagnetic valve (41) and fall electromagnetic valve (42).
6. according to claim 4 or the leveling equipment of 5 described hydro pneumatic suspensions, it is characterized in that, also comprise the telltale (7) be used to the leveling signal that receives described function unit (3), in order to show the location status of described suspension oil cylinder (5).
7. a vehicle is characterized in that, comprises the leveling equipment such as each described hydro pneumatic suspension of claim 4 to 6.
8. vehicle according to claim 7 is characterized in that, comprises the first axletree that is positioned at foremost and the second axletree that is positioned at rearmost end, and the suspension oil cylinder at the suspension oil cylinder at described the first axletree two ends and described the second axletree two ends is equipped with described leveling equipment.
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| CN 201010108165 CN102139612B (en) | 2010-01-29 | 2010-01-29 | Vehicle as well as method and device for leveling hydro-pneumatic suspension of same |
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| CN 201010108165 CN102139612B (en) | 2010-01-29 | 2010-01-29 | Vehicle as well as method and device for leveling hydro-pneumatic suspension of same |
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| CN102139612B true CN102139612B (en) | 2013-03-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103182916A (en) * | 2011-12-28 | 2013-07-03 | 长春孔辉汽车科技有限公司 | Leveling device and method for hydro-pneumatic suspension of multi-axle vehicle |
| CN103287415A (en) * | 2013-04-28 | 2013-09-11 | 淄博正邦知识产权企划有限公司 | New energy automobile steering balancedly |
| CN104175830A (en) * | 2013-05-28 | 2014-12-03 | 淮阴工学院 | Automatic leveling system for automobile base plate with dual functions of vibration-reducing and leveling |
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| CN103057377B (en) * | 2013-01-06 | 2015-07-15 | 黄飞灵 | Body stabilization system |
| CN108032700A (en) * | 2017-12-21 | 2018-05-15 | 山河智能特种装备有限公司 | A kind of equilbrium position is adjustable suspension oil gas cylinder and its simple pendulum arm hydro pneumatic suspension structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103182916A (en) * | 2011-12-28 | 2013-07-03 | 长春孔辉汽车科技有限公司 | Leveling device and method for hydro-pneumatic suspension of multi-axle vehicle |
| CN103182916B (en) * | 2011-12-28 | 2016-11-02 | 长春孔辉汽车科技股份有限公司 | Multiple-axle vehicle hydro pneumatic suspension levelling device and method |
| CN103287415A (en) * | 2013-04-28 | 2013-09-11 | 淄博正邦知识产权企划有限公司 | New energy automobile steering balancedly |
| CN103287415B (en) * | 2013-04-28 | 2015-02-18 | 淄博正邦知识产权企划有限公司 | New energy automobile steering balancedly |
| CN104175830A (en) * | 2013-05-28 | 2014-12-03 | 淮阴工学院 | Automatic leveling system for automobile base plate with dual functions of vibration-reducing and leveling |
| CN104175830B (en) * | 2013-05-28 | 2016-08-10 | 淮阴工学院 | There is vibration damping and leveling bifunctional car floor automatic horizontal control system |
| CN109017196A (en) * | 2018-08-13 | 2018-12-18 | 盐城工学院 | A kind of vehicle body automatic leveling device |
| CN110103660A (en) * | 2019-05-27 | 2019-08-09 | 爱驰汽车有限公司 | Method, system, equipment and the storage medium of automotive suspension dynamic compensation |
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