CN104132821A - Fatigue testing system for vehicle hydraulic interconnection suspension system - Google Patents
Fatigue testing system for vehicle hydraulic interconnection suspension system Download PDFInfo
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- CN104132821A CN104132821A CN201410389923.0A CN201410389923A CN104132821A CN 104132821 A CN104132821 A CN 104132821A CN 201410389923 A CN201410389923 A CN 201410389923A CN 104132821 A CN104132821 A CN 104132821A
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Abstract
The invention relates to the technical field of automobile performance testing, in particular to a fatigue testing system for a vehicle hydraulic interconnection suspension system. The fatigue testing system comprises a base, a drive mechanism and a controller, wherein the base is used for arranging all hydraulic cylinders of the vehicle hydraulic interconnection suspension system, the drive mechanism is used for driving all the hydraulic cylinders to retract or stretch synchronously, and the controller is used for controlling the drive mechanism to operate. According to the fatigue testing system for the vehicle hydraulic interconnection suspension system, the drive mechanism drives all the hydraulic cylinders of the hydraulic interconnection suspension system to retract or stretch synchronously, and fatigue testing is carried out on the whole hydraulic interconnection suspension system as a whole; compared with a fatigue testing device in the prior art, the testing result of the testing system is genuine, believable and reliable, the performance of the vehicle hydraulic interconnection suspension system can be truly reflected, and the quality and the safety of the detected vehicle hydraulic interconnection suspension system can be improved easily.
Description
Technical field
The present invention relates to automotive performance technical field of measurement and test, relate in particular to the fatigue test system of the interconnected suspension system of a kind of vehicle hydraulic.
Background technology
The interconnected suspension system of hydraulic pressure, as a set of novel vehicle suspension system, has the incomparable function of conventional suspension systems, has wide market outlook.The interconnected suspension system of hydraulic pressure needs to go into operation, must be through test for a long time, to detect its quality and safety.If interconnected above-mentioned hydraulic pressure suspension system is arranged on real vehicle and carries out testing fatigue, financial cost will be very high, in the time being arranged on the interconnected suspension system of hydraulic pressure on real vehicle and being damaged, can cause danger in addition.Therefore, need a set of fatigue test system badly the interconnected suspension system of hydraulic pressure is carried out to indoor testing fatigue.
In prior art, comprise 4 independently stretching devices for the fatigue test device of vehicle hydraulic suspension system, these 4 respectively 4 hydraulic cylinders of corresponding vehicle hydraulic suspension system one by one of stretching device independently, i.e. left side front-wheel hydraulic cylinder, right side front wheel hydraulic cylinder, left side trailing wheel hydraulic cylinder and right side rear wheel hydraulic cylinder, the principle of work of the fatigue test device of this vehicle hydraulic suspension system is: each stretching device stretches certain frequency (or variable frequency) in the situation that repeatedly to hydraulic cylinder corresponding thereto respectively, so that each hydraulic cylinder is tested separately, thereby check independently the durability of each hydraulic cylinder.
The defect of the fatigue test device of vehicle hydraulic suspension system of the prior art is: this fatigue test device is independent respectively to be tested the each hydraulic cylinder in vehicle hydraulic suspension system, although durability that can test liquid cylinder pressure, the permanance of passing judgment on hydraulic suspension system is had to certain reference role, but can not carry out comprehensively real simulation test to its entirety; In addition, because the interconnected suspension system of hydraulic pressure is a set of by hydraulic cylinder, oil pipe, accumulator, the a set of unified entirety of the composition such as all kinds of joints, affect the factor every aspect of its permanance, it is not rigorous that single part is independently carried out to testing fatigue, so fatigue test device of the prior art is not suitable for the fatigability test of the interconnected suspension system of this hydraulic pressure.
Summary of the invention
The object of the present invention is to provide the fatigue test system of the interconnected suspension system of a kind of vehicle hydraulic, interconnected vehicle hydraulic suspension system can be done to the as a whole fatigability test of carrying out, test result is more reliable.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A fatigue test system for the interconnected suspension system of vehicle hydraulic, comprising:
Be used for the base of each hydraulic cylinder that the interconnected suspension system of described vehicle hydraulic is set;
For driving each hydraulic cylinder synchronous compression of the interconnected suspension system of described vehicle hydraulic or the driving mechanism of synchro-draw; And
Control the controller of described driving mechanism operation.
Compared with prior art, the invention has the advantages that: the fatigue test system of the interconnected suspension system of vehicle hydraulic that the present embodiment provides, drive all hydraulic cylinder synchronous compression or the synchro-draw of the interconnected suspension system of hydraulic pressure by driving mechanism, interconnected whole hydraulic pressure suspension system is made to the as a whole testing fatigue that carries out, in prior art, successively the each hydraulic cylinder in suspension system is carried out to testing fatigue separately, the test result of this test macro is more genuine and believable, reliably, can truly reflect the performance of the interconnected suspension system of vehicle hydraulic, be conducive to improve the quality and safety of the detected interconnected suspension system of vehicle hydraulic.
In further technical scheme, described fatigue test system also comprise be arranged on the below of described hydraulic cylinder, for adjusting the height regulating mechanism of height of described hydraulic cylinder.
Preferably, described height regulating mechanism is height adjusting cushion block.
Preferably, described driving mechanism comprises motor, reductor, gear train and web member; Wherein:
Described motor is controlled by described controller, and described motor is sequentially connected described web member by described reductor with described gear train, and drives described web member back and forth to move up and down;
The first end of each hydraulic cylinder of the interconnected suspension system of described vehicle hydraulic is separately positioned on described base, the second end of each hydraulic cylinder is separately positioned on described web member, described first end and described the second end are respectively the end of cylinder body and the end of piston rod of described hydraulic cylinder, or described first end and described the second end are respectively the end of piston rod and the end of cylinder body of described hydraulic cylinder.
Preferably, described gear train is toggle.
Preferably, the first end of described hydraulic cylinder is connected by the first sliding connector and described base sliding; The second end of described hydraulic cylinder is by the second sliding connector and described web member sliding connection.
Preferably, described the first sliding connector comprises the first slide rail of being packed on described height regulating mechanism and the first slide block with described the first slide rail sliding connection, and the first end of described hydraulic cylinder is fixedly connected with described the first slide block; Described the second sliding connector comprises the second slide rail of being packed on described web member and the second slide block with described the second slide rail sliding connection, and the second end of described hydraulic cylinder is fixedly connected with described the second slide block.
Preferably, described the first sliding connector also comprises the first position limiting structure sliding for limiting described the first slide block, and the second position limiting structure sliding for limiting described the second slide block.
Preferably, described web member is fixedly connected with described base by support column, and described support column and described base junction are provided with reinforcement.
Preferably, described controller is frequency converter.
Brief description of the drawings
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the fatigue test system of the interconnected suspension system of vehicle hydraulic that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below with reference to accompanying drawing, the technical scheme of various embodiments of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belong to the scope that the present invention protects.
Embodiment 1
For the fatigue test device that solves vehicle hydraulic suspension system of the prior art only can carry out fatigability test to the each hydraulic cylinder in hydraulic suspension system independently, and whole hydraulic suspension system can not be done to the as a whole integrated testability of carrying out, can not adapt to the testing fatigue of the novel interconnected suspension system of vehicle hydraulic, the embodiment of the present invention provides a kind of fatigue test system that is adapted to the interconnected suspension system of vehicle hydraulic, than fatigue test device of the prior art, the test result of this fatigue test system is more reliable.
As shown in Figure 1, be the structural representation of the fatigue test system of the interconnected suspension system of vehicle hydraulic that provides of the embodiment of the present invention, this fatigue test system comprises base 10, driving mechanism and controller 1.
Particularly, in general, for common four-wheeled vehicle, the interconnected suspension system of described hydraulic pressure comprises 4 hydraulic cylinders 8 and connects the oil pipe of these 4 hydraulic cylinders 8, accumulator, valve, joint etc., above-mentioned 4 hydraulic cylinders 8 are respectively left side front-wheel hydraulic cylinder, right side front wheel hydraulic cylinder, left side trailing wheel hydraulic cylinder and right side rear wheel hydraulic cylinder, wherein, the piston rod of left side front-wheel hydraulic cylinder is connected with left front wheel assembly, and the cylinder body of left side front-wheel hydraulic cylinder is connected with vehicle body; The piston rod of right side front wheel hydraulic cylinder is connected with right side front vehicle wheel assembly, and the cylinder body of right side front wheel hydraulic cylinder is connected with vehicle body; The piston rod of left side trailing wheel hydraulic cylinder is connected with left side rear wheel assembly, and the cylinder body of left side trailing wheel hydraulic cylinder is connected with vehicle body; The piston rod of right side rear wheel hydraulic cylinder is connected with right side rear wheel assembly, and the cylinder body of right side rear wheel hydraulic cylinder is connected with vehicle body.
The embodiment of the present invention is all using interconnected the hydraulic pressure of common four-wheeled vehicle suspension system as tested object, 4 hydraulic cylinders 8 of the interconnected suspension system of vehicle hydraulic are all arranged on described base 10, described driving mechanism is for driving 4 hydraulic cylinder 8 synchronous compressions or the synchro-draw of the interconnected suspension system of vehicle hydraulic, described driving mechanism makes the piston rod of 4 hydraulic cylinders 8 synchronously do reciprocal translation motion, in the present embodiment, for back and forth moving up and down.The operation of this driving mechanism is controlled by controller 1.
The fatigue test system of the interconnected suspension system of vehicle hydraulic that the present embodiment provides, drive all hydraulic cylinder 8 synchronous compressions or the synchro-draw of the interconnected suspension system of hydraulic pressure by driving mechanism, interconnected whole hydraulic pressure suspension system is made to the as a whole testing fatigue that carries out, in prior art, successively the each hydraulic cylinder 8 in suspension system is carried out to testing fatigue separately, the test result of this test macro is more genuine and believable, reliably, can truly reflect the performance of the interconnected suspension system of vehicle hydraulic, be conducive to improve the quality and safety of the detected interconnected suspension system of vehicle hydraulic.In order to embody this other feature, below by following examples to being further described in embodiment 1.
Embodiment 2
For the true ruuning situation of further simulating vehicle, the present embodiment increases the function of regulating height thereof of hydraulic cylinder 8 in embodiment 1 on basis, concrete structure is as follows: referring again to Fig. 1, described fatigue test system also comprise be arranged on the below of described hydraulic cylinder 8, for adjusting the height regulating mechanism 7 of height of described hydraulic cylinder 8, by height regulating mechanism 7, adjust the height of the hydraulic cylinder 8 corresponding with this height regulating mechanism 7.Simple in structure for whole test macro, above-mentioned height regulating mechanism 7 can be chosen as the height adjusting cushion block being removably disposed on described base 10 simply, certainly those skilled in the art can replace with this height regulating mechanism 7 mechanism that other can be adjusted the height of hydraulic cylinder 8, adjustment hydraulic cylinder for example can be set below hydraulic cylinder 8, and the extension elongation of adjusting the piston rod of hydraulic cylinder by control can be adjusted the height of this hydraulic cylinder 8.
In the present embodiment, before testing fatigue, by regulating 4 each self-corresponding height regulating mechanisms 7 of hydraulic cylinder 8 in the interconnected suspension system of vehicle hydraulic, carry out the mode of motion such as the level, inclination, pitching of simulating vehicle, here, when simulating vehicle tangential movement mode, adjust 4 height regulating mechanisms 7 and make the setting height(from bottom) of 4 hydraulic cylinders 8 consistent; When simulating vehicle left side wheels roll motion mode, adjust 4 height regulating mechanisms 7 and make the setting height(from bottom) of left side front-wheel hydraulic cylinder and left side trailing wheel hydraulic cylinder lower than the setting height(from bottom) of right side front wheel hydraulic cylinder and right side rear wheel hydraulic cylinder; When simulating vehicle front-wheel is steeved mode of motion, adjusting 4 height regulating mechanisms 7 makes the setting height(from bottom) of left side front-wheel hydraulic cylinder and right side front wheel hydraulic cylinder higher than the setting height(from bottom) of left side trailing wheel hydraulic cylinder and right side rear wheel hydraulic cylinder, while simulating other vehicle operating mode, the adjustment mode of each height regulating mechanism 7 by that analogy, no longer repeats in this article.Utilize above-mentioned height regulating mechanism 7 by after good the height control of each hydraulic pressure wheel, carry out again testing fatigue, further real simulation carries out the situation of testing fatigue on real vehicle, further improve the reliability of testing fatigue result, can further truly reflect the performance of the interconnected suspension system of vehicle hydraulic, be conducive to further improve the quality and safety of the detected interconnected suspension system of vehicle hydraulic.
Embodiment 3
The present embodiment provides a kind of preferred structure of driving mechanism related in embodiment 1, and equally with reference to Fig. 1, described driving mechanism comprises motor 2, reductor 3, gear train and web member 5.
Particularly, motor 2 is controlled by described controller 1, here, in the time carrying out testing fatigue, controller 1 can be controlled motor 2 with constant frequency operation, also can control the frequency operation of motor 2 to change, here, described controller 1 can be preferably frequency converter, owing to (can electing central processing unit as by controller 1, single-chip microcomputer, programmable logic controller (PLC), flush bonding processor etc.) or Frequency Converter Control motor 2 operate to the conventional technological means adopting of those skilled in the art, so no longer this partial content is launched to explanation in present specification.Motor 2 is sequentially connected described web member 5 with gear train by reductor 3, and drive the reciprocal translation motion of web member 5 (in the present embodiment for driving web member 5 back and forth to move up and down).
The first end of 4 hydraulic cylinders 8 of the interconnected suspension system of vehicle hydraulic is separately positioned on base 10, the second end of each hydraulic cylinder 8 is separately positioned on web member 5, described first end and described the second end are respectively the end of cylinder body and the end of piston rod of hydraulic cylinder 8, or first end and described the second end are respectively the end of piston rod and the end of cylinder body of described hydraulic cylinder 8.In the present embodiment, the first end that all hydraulic cylinder 8 connects base 10 is the free end (free end refers to piston rod and extend out to one end of the cylinder body outside of hydraulic cylinder 8) of the piston rod of this hydraulic cylinder 8, and the second end that all hydraulic cylinder 8 connects described web member 5 is the end of the cylinder body of this hydraulic cylinder 8.Here, what deserves to be explained is, in the time of concrete connection, 4 hydraulic cylinders 8 towards can be different, it is some or the piston rod of certain several hydraulic cylinder 8 connection base 10, the piston rod of other hydraulic cylinder 8 connects described web member 5, as long as make in test process, hydraulic cylinder 8 is understood compressed or is stretched.
Further, described gear train is preferably toggle 9, and one end of toggle 9 connects the output shaft of reductor 3, and the other end connects the driving shaft 4 being arranged on web member 5, by controlling the rotation of motor 2, drive web member 5 constantly reciprocally to move up and down.
Further, for the further installation site of the interconnected suspension system of reduction hydraulic pressure on real vehicle, at 4 hydraulic cylinders 8 of the interconnected suspension system of described vehicle hydraulic for to be arranged on base 10 or on height regulating mechanism 7 movably.In the present embodiment, referring again to Fig. 1, the first end of described hydraulic cylinder 8 is by the first sliding connector 61 and described base 10 sliding connections; The second end of described hydraulic cylinder 8 is by the second sliding connector 62 and described web member 5 sliding connections.
Here, described the first sliding connector 61 and the second sliding connector 62 can be chosen as any sliding connector 5 well known to those skilled in the art, in a preferred embodiment, described the first sliding connector 61 preferably includes the first slide rail (being preferably typical T shape slide rail) of being packed on described height regulating mechanism 7 and the first slide block with described the first slide rail sliding connection, and the first end of described hydraulic cylinder 8 is fixedly connected with described the first slide block; Described the second sliding connector 62 preferably includes the second slide rail (being preferably typical T shape slide rail) of being packed on described web member 5 and the second slide block with described the second slide rail sliding connection, and the second end of described hydraulic cylinder 8 is fixedly connected with described the second slide block.Like this, by described the first sliding connector 61 and the second sliding connector 62, position that can each hydraulic cylinder 8 of lateral adjustments, regulate the spacing between left side front-wheel hydraulic cylinder and left side trailing wheel hydraulic cylinder, regulate the spacing between right side front wheel hydraulic cylinder and right side rear wheel hydraulic cylinder, with the installation site on Reality simulation vehicle.The adjustment of hydraulic cylinder 8 positions is also comprised to it is vertical making the center line of hydraulic cylinder 8, by adjusting corresponding to the first sliding connector 61 and second sliding connector 62 of same hydraulic cylinder 8, make the cylinder body of this hydraulic cylinder 8 and piston rod on the pedal line of setting.
In addition, adjusting behind the position of each hydraulic cylinder 8, in order to ensure that, in follow-up test process, hydraulic cylinder 8 remains on this position, need to carry out spacing processing to the first sliding connector 61 of each hydraulic cylinder 8 correspondences and the second sliding connector 62.Particularly, described the first sliding connector 61 also comprises the first position limiting structure (attached not shown) sliding for limiting described the first slide block, and the second position limiting structure (attached not shown) sliding for limiting described the second slide block.Because described the first position limiting structure and the second position limiting structure are the conventional technological means of sliding on slide rail for limiting slide block that adopt of those skilled in the art, so no longer launch explanation herein.
Further, for increasing strength of joint and the connective stability of above-mentioned fatigue test system, adopt following structure: with reference to Fig. 1, described web member 5 is fixedly connected with described base 10 by support column 11, described support column 11 is provided with reinforcement 12 with described base 10 junctions, is preferably triangle reinforcement 12.
The method of work of the fatigue test system of the interconnected suspension system of vehicle hydraulic that the embodiment of the present invention provides is:
First, 4 hydraulic cylinders 8 in interconnected hydraulic pressure suspension system are fixedly mounted with on corresponding the first slide block and the second slide block, can regulate by height adjustment mechanism the setting height(from bottom) of each hydraulic cylinder 8, regulate the stretch position of each hydraulic cylinder 8, by the first sliding connector 61 and the second sliding connector 62 regulator solution cylinder pressure 8 spacing, with the installation site on Reality simulation vehicle.After having regulated height and hydraulic cylinder 8 spacing, by access hydraulic cylinders 8 such as oil pipe, accumulator, joints, be assembled into the interconnected suspension system of complete hydraulic pressure, and squeeze into hydraulic oil to the pressure requiring.
Then, start frequency converter, the vibration frequency that regulates frequency converter to need to experiment, Frequency Converter Control motor 2 turns round, by reductor 3, and toggle 9, driving shaft 4, drive web member 5 to do back and forth and move up and down, i.e. the mode of motion such as inclination, pitching of simulating vehicle, the interconnected suspension system of hydraulic pressure is worked under the drive of fatigue test system.The vibration frequency that can regulate in real time by frequency converter test macro, fatigue test system was worked to the time requiring always, to check the permanance of the interconnected suspension system of hydraulic pressure, finally obtained reliable testing fatigue result.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a fatigue test system for the interconnected suspension system of vehicle hydraulic, is characterized in that, comprising:
Base, its structure is suitable for arranging multiple hydraulic cylinders of the interconnected suspension system of described vehicle hydraulic simultaneously;
Driving mechanism, at least two hydraulic cylinder synchronous that its structure is suitable in described multiple hydraulic cylinder are compressed or synchro-draw; And
Controller, it is electrically connected the control end of described driving mechanism.
2. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 1, is characterized in that, described fatigue test system also comprise be arranged on the below of described hydraulic cylinder, for adjusting the height regulating mechanism of height of described hydraulic cylinder.
3. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 2, is characterized in that, described height regulating mechanism is height adjusting cushion block.
4. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 2, is characterized in that, described driving mechanism comprises motor, reductor, gear train and web member; Wherein:
Described motor is controlled by described controller, and described motor is sequentially connected described web member by described reductor with described gear train, and drives described web member back and forth to move up and down;
The first end of each hydraulic cylinder of the interconnected suspension system of described vehicle hydraulic is separately positioned on described base, the second end of each hydraulic cylinder is separately positioned on described web member, described first end and described the second end are respectively the end of cylinder body and the end of piston rod of described hydraulic cylinder, or described first end and described the second end are respectively the end of piston rod and the end of cylinder body of described hydraulic cylinder.
5. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 4, is characterized in that, described gear train is toggle.
6. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 4, is characterized in that, the first end of described hydraulic cylinder is connected by the first sliding connector and described base sliding; The second end of described hydraulic cylinder is by the second sliding connector and described web member sliding connection.
7. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 6, it is characterized in that, described the first sliding connector comprises the first slide rail of being packed on described height regulating mechanism and the first slide block with described the first slide rail sliding connection, and the first end of described hydraulic cylinder is fixedly connected with described the first slide block; Described the second sliding connector comprises the second slide rail of being packed on described web member and the second slide block with described the second slide rail sliding connection, and the second end of described hydraulic cylinder is fixedly connected with described the second slide block.
8. the fatigue test system of the interconnected suspension system of vehicle hydraulic as claimed in claim 7, it is characterized in that, described the first sliding connector also comprises the first position limiting structure sliding for limiting described the first slide block, and the second position limiting structure sliding for limiting described the second slide block.
9. the fatigue test system of the interconnected suspension system of vehicle hydraulic as described in claim 1 to 8, is characterized in that, described web member is fixedly connected with described base by support column, and described support column and described base junction are provided with reinforcement.
10. the fatigue test system of the interconnected suspension system of vehicle hydraulic as described in claim 1 to 8, is characterized in that, described controller is frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410389923.0A CN104132821A (en) | 2014-08-08 | 2014-08-08 | Fatigue testing system for vehicle hydraulic interconnection suspension system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410389923.0A CN104132821A (en) | 2014-08-08 | 2014-08-08 | Fatigue testing system for vehicle hydraulic interconnection suspension system |
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| CN104132821A true CN104132821A (en) | 2014-11-05 |
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| CN201410389923.0A Pending CN104132821A (en) | 2014-08-08 | 2014-08-08 | Fatigue testing system for vehicle hydraulic interconnection suspension system |
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| CN104865082A (en) * | 2015-06-10 | 2015-08-26 | 湖南大学 | Fatigue test system for hydraulic interconnected suspension |
| CN105806600A (en) * | 2016-03-10 | 2016-07-27 | 中国北方车辆研究所 | Hydro-pneumatic spring testbed position hydraulic adjustment device with locking function |
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