CN203414258U - Double air spring comprehensive property test apparatus - Google Patents
Double air spring comprehensive property test apparatus Download PDFInfo
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- CN203414258U CN203414258U CN201320405583.7U CN201320405583U CN203414258U CN 203414258 U CN203414258 U CN 203414258U CN 201320405583 U CN201320405583 U CN 201320405583U CN 203414258 U CN203414258 U CN 203414258U
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- air spring
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Abstract
The utility model discloses a double air spring comprehensive property test apparatus which belongs to the vehicle engineering technology field. The apparatus can effectively simulate dynamics problems of critical components during a vehicle operation process, wherein the critical components comprise a height valve, a differential pressure valve and a side-rolling resistant torsion bar. The apparatus of the utility model comprises working benches provided with multidirectional actuators, an additional air chamber, an air inflation and exhaust system, a counter weight and the like. An upper-end counterweight only restricts longitudinal translation. Multidimensional and multiphase incentives are applied to a double air spring. In different temperature conditions, an air spring load, deflection changes, transverse and vertical accelerated speeds and displacements of a car body are tested under different physical parameter conditions. A vibration characteristic parameter is used to calculate dynamical parameters of each dynamic stiffness, a damping ratio, a displacement transmission ratio, an acceleration transmission ratio and the like of the air spring. Two point control and four point control are compared so that an air spring dynamics property test is completed and a vehicle operation stationarity parameter is obtained. The apparatus is mainly used for the double air spring comprehensive property test.
Description
Technical field
The utility model is to belong to Vehicle Engineering technical field, particularly the dynamic and static characteristic test device of vehicle air spring.
Background technology
Along with the raising of running velocity and comfortableness is required day by day strict, air spring is widely used because it has good linear Stiffness and damping performance.Its good dynamic performance makes it aspect raising running velocity and riding comfort, play vital effect.The rigidity of air spring, damping characteristic are subject to the impact of many physical parameters and temperature and actual condition, material nonlinearity due to air spring, the factor such as geometrical non-linearity and contact nonlinear, cause that air spring is carried out to dynamic analysis and become comparatively difficult, therefore, be badly in need of a kind ofly can considering environment temperature, air spring bulk volume, auxiliary chamber volume, throttle orifice diameter, the factors such as connecting line length are on the test method of the impact of air spring dynamic perfromance and testing equipment, in order to air spring is carried out to complete dynamics research.
Traditional experiment method is carried out dynamic test mainly for single air spring, cannot simulated air spring in critical component-altitude valve, differential pressure valve and the effect of anti-side rolling torsion rod in vehicle operating process.And there is no at present complete two empty spring testing table.Therefore, the utility model is for the deficiency of traditional experiment method, set up dual air spring dynamics test bed, can realize the contrast of simulation two point control and four point control, cophase detector and anti-phase excitation contrast, the optimization of anti-side rolling torsion rod rigidity, measures the different dynamic responses that load the damper elements such as air spring under amplitudes and loading frequency, optimize air spring structural parameters, research car body comfortableness.
Utility model content
The utility model provides a kind of dual air spring comprehensive performance testing device, it is combining environmental temperature effectively, air spring bulk volume, auxiliary chamber volume, throttle orifice diameter, the problem that connecting line diameter and length etc. affect air spring combination property completes test.
Goal of the invention of the present utility model is achieved through the following technical solutions: a kind of dual air spring comprehensive performance testing device, comprises start platform, auxiliary chamber, inflating and exhausting system, hydraulic system, high-low pressure gas-holder and peripheral hardware compressor and air-conditioning.Start platform has the worktable of two bearing test parts, between them, by being provided with the pipeline of differential pressure valve, be connected, each worktable below is equipped with vertical excitation charger, and side is provided with transversely excited charger and reverses excitation charger, and their actuator is connected with hydraulic system respectively; Counter weight device is comprised of grid and plummer, and quality and the quantity of weight mass lead in grid determine, can simulate quality and the moment of inertia of actual car body.One end and the plummer of two ball pivot connecting rods are fixed, plummer longitudinally the other end of the two ball pivot connecting links by two ends be fixed on the chute of bearing inner side and the slide block that is mated on; Plummer below is provided with sensor with worktable corresponding position, the both sides of plummer are equipped with altitude valve, valve control lever bar is connected with worktable, torsion bar mechanism for preventing side rolling of train carriage is equipped with in plummer front side, torsion bar mechanism for preventing side rolling of train carriage is comprised of connecting rod torsion bar arm and torsion bar etc., between torsion bar and torsion bar arm, adopt pressing type to connect, torsion bar is connected with plummer by the supporting seat being fixed on plummer, connecting rod is connected with the Connection Block being fixed on worktable, adopts rubber nodal point elasticity to connect between connecting rod two ends and each mount pad; Torsion bar mechanism for preventing side rolling of train carriage only limits the motion of sidewindering of car body, and to the yaw of car body, the motion such as drift along of shaking the head does not exert an influence.Worktable upper surface has annular groove, and below is provided with by three and is the vertical excitation charger that plane triangle arranges that two vertical hydraulic actuators of ball pivot form.Transversely excited charger is that the upper end of two hinged vertical hydraulic actuators is hinged with the inferior angle of elevation that is hinged on the set square on bearing, and the drift angle of set square is connected with worktable by single ball pivot connecting link.
Described torsion exciting bank is comprised of two groups of identical transversely excited chargers.When two two hinged hydraulic actuator anti-phase motion, by the set square connection being hinged on bearing, catenary motion is changed to transverse movement, make worktable produce twisting motion.
Described auxiliary chamber is barrel-like structure, and inside is filled with hydraulic oil, between two auxiliary chambers, by establishing valvular pipeline, is connected.Auxiliary chamber quantity in connecting system can regulate by the differential pressure valve between two auxiliary chambers, make it to become auxiliary chamber or two independent auxiliary chambers of Yi Ge UNICOM, and each auxiliary chamber can be tested air spring according to different model and regulate auxiliary chamber size, also can adopt single auxiliary chamber or two auxiliary chamber according to the difference of control mode, auxiliary chamber is connected with worktable by connecting line, by regulating the size of inner oil mass to control the size of cavity, the auxiliary chamber volume size that realizes connecting system is adjustable continuously; Differential pressure valve connects two air spring additional air chambers, and in four point control, between two air springs, pressure reduction reaches preset value Shi， UNICOM two auxiliary chambers that differential pressure valve is opened, the empty spring air pressure of balance two.
The concrete formation of described inflating and exhausting system is: levelling valve has three ports, connects respectively the auxiliary chamber of air spring, the high-low pressure gas-holder of peripheral hardware and compressor and atmosphere.The air intake opening of auxiliary chamber is connected with a port of levelling valve through tracheal pressure, and the levelling valve other end is connected with compressor with high-low pressure gas-holder, also has a port to be connected with atmosphere.By control lever, control air spring height, between car body and start platform, distance is too small, and altitude valve is controlled to the inner air inlet of air spring, otherwise to atmospheric exhaust.
Described hydraulic system comprises pipeline, power pump, air compressor machine, oil sources and the cooling system thereof that connects actuator, actuator rated pressure 210--280bar, and its tailpiece of the piston rod adopts hydrostatic bearing.
By vertical, horizontal, reverse exciting bank and form a whole set of six degree of freedom excitation system and be installed in melt pit, by regulating actuator can adjust height of table, with the standard operation height of warranty test part (as air spring etc.).Excitation loading system regulates frequency, the amplitude of excitation by hydraulic control system, can realize fixed amplitude, fixed frequency loading, fixed amplitude, swept frequency excitation load and arbitrary excitation loads, aspect vertical excitation, two start platforms apply excitation can realize cophase detector and anti-phase excitation, and loading frequency variation range is from 0Hz～50Hz;
In addition, this test unit is also provided with temperature control system, and concrete formation is: peripheral hardware air-conditioning is connected with empty spring insulating cover by connecting airduct, realizes the regulatory function to air spring operating ambient temperature.
Principle of work of the present utility model is: considered different physical, the amplitude that applies excitation and the frequencies such as environment temperature, air spring capsule type, bulk volume, auxiliary chamber volume, throttle orifice diameter, connecting line length and diameter, the empty spring in left and right applied to phase angle difference, two point control and four point control and the impact of anti-side rolling torsion rod on the dynamic property of air spring and vehicle operating performance of excitation.This test unit combines laterally, vertical and reverse dynamic load and static loading, experimentation cost is low, test efficiency is high, by adjusting quantity and the position of lead in grid, can simulate quality and the moment of inertia of car body, make test figure more approach the response characteristic of real vehicles under additional incentive action, auxiliary chamber quantity in connecting system can be a shared auxiliary chamber or two independent auxiliary chambers by the valve regulated between two auxiliary chambers, can regulate auxiliary chamber size according to different model air spring, also can adopt single auxiliary chamber or two auxiliary chamber according to the difference of control mode, and each auxiliary chamber is by the size of the indirect Admission eontrol system internal cavity of size of adjusting oil mass, stiff end only limits longitudinal translation of counter weight device, therefore can simulating vehicle sidewinder, yaw, drift along, yaw motion, test is more tallied with the actual situation, test figure is more true and reliable.By self-programmed software, calculate the dynamic rate of air spring, the kinetic parameters such as damping ratio are with frequency amplitude Changing Pattern, thereby complete the dynamic test of air spring.
Compared with prior art, the effect that the utility model is useful is:
One, this test unit combines six degree of freedom exciting bank vertical, horizontal, that reverse air spring is carried out to dynamic load, can be than simple transverse vibration testing table and vertical testing table, and experimentation cost is lower, tests more convenient.Considered different physical, the amplitude that applies excitation and the frequencies such as environment temperature, air spring capsule type, bulk volume, auxiliary chamber volume, throttle orifice diameter, connecting line length and diameter, the empty spring in left and right applied to phase angle difference, two point control and four point control and the impact of anti-side rolling torsion rod on the dynamic property of air spring of excitation, upper end counter weight device is simulating vehicle mode of oscillation well.
Two, adopt peripheral hardware air-conditioning to carry out temperature control, can the temperature of simulated air spring in actual working environment, particularly the dynamics research tool of high-cold vehicle air spring is of great significance.
Three, can implement to load up to the high frequency of 50Hz to air spring, because domestic there is no at present for air spring applies 10Hz with the load test of upper frequency, therefore, this test unit seems very important for research air spring at the dynamics under high frequency pumping.
Four, by the valve regulated between two auxiliary chambers, make it to become auxiliary chamber or two independent auxiliary chambers of Yi Ge UNICOM, also can adopt single auxiliary chamber or two auxiliary chamber according to the difference of control mode, the auxiliary chamber volume size that realizes connecting system is adjustable continuously.
Five, counter weight device stiff end slide block can regulate by leading screw along vertical height in chute, only limits counter weight device translation along the longitudinal direction, therefore can simulate sidewindering of car body, and yaw, drifts along, yaw motion.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is left TV structure schematic diagram of the present utility model.
Fig. 3 is that the utility model is overlooked (plummer, worktable, traversing and twist mechanism) structural representation.
Fig. 4 is the vertical hydraulic actuator schematic layout pattern of the utility model.
Fig. 5 is the vertical hydraulic actuator layout of the utility model schematic perspective view.
Fig. 6 is the perspective view of the utility model embodiment.
Embodiment
Embodiment
A kind of dual air spring comprehensive performance testing device, comprise start platform, auxiliary chamber, inflating and exhausting system, hydraulic system, high-low pressure gas-holder and peripheral hardware compressor and air-conditioning form, start platform has the worktable 3 of two bearing test parts, between them, by being provided with the pipeline 18 of differential pressure valve 10, is connected, and each worktable 3 below is equipped with vertical excitation charger, side is provided with transversely excited charger and reverses excitation charger, and hydraulic system is connected respectively for they; Counter weight device is comprised of grid 1 and plummer 2, and quality and the quantity of weight mass lead in grid determine, can simulate quality and the moment of inertia of actual car body.One end of two ball pivot connecting rods 17 and plummer 2 are fixing, plummer 2 longitudinally the other end of the two ball pivot connecting links 17 by two ends be fixed on the chute 15 of bearing 14 inner sides and the slide block 16 that is mated on, slide block can pass through screw mandrel manual adjustments along vertical and lateral attitude in chute, connecting link two ends adopt two ball pivot fixed forms, only limit counter weight device translation along the longitudinal direction, therefore can simulate sidewindering of car body, yaw, drift along, yaw motion.Plummer 2 belows and worktable 3 corresponding positions are provided with sensor 13, and a side of plummer 2 is provided with altitude valve 12, and valve control lever is connected with worktable 3.Worktable 3 upper surfaces have annular groove, and below is provided with by three and is the vertical excitation charger that plane triangle arranges that two vertical hydraulic actuators 4 of ball pivot form.Transversely excited charger is that the upper end of two hinged vertical hydraulic actuators 5 is hinged with the inferior angle of elevation that is hinged on the set square 7 on bearing 6, and the drift angle of set square 7 is connected with worktable 3 by single ball pivot connecting link 8.Reversing exciting bank is comprised of two groups of identical transversely excited chargers.When two two hinged hydraulic actuator anti-phase motion, by set square 7 connections that are hinged on bearing, catenary motion is changed to transverse movement, make worktable produce twisting motion.
Auxiliary chamber 11 is barrel-like structure, and inside is filled with hydraulic oil, between two auxiliary chambers 11, by being provided with the pipeline of valve 9, is connected.Auxiliary chamber quantity in connecting system can regulate by the differential pressure valve 10 between two auxiliary chambers, make it to become auxiliary chamber 11 or two independent auxiliary chambers 11 of Yi Ge UNICOM, and each auxiliary chamber 11 can be tested air spring according to different model and regulate auxiliary chamber 11 sizes, also can adopt single auxiliary chamber 11 or two auxiliary chamber 11 according to the difference of control mode, auxiliary chamber 11 is connected with worktable 3 by connecting line, by regulating the size of inner oil mass to control the size of cavity, the auxiliary chamber 11 volume sizes that realize connecting system are adjustable continuously; Differential pressure valve 10 connects two air spring additional air chambers 11, and in four point control, between two air springs, pressure reduction reaches preset value Shi， UNICOM two auxiliary chambers 11 that differential pressure valve 11 is opened, the empty spring air pressure of balance two.
The concrete formation of inflating and exhausting system is: levelling valve has three ports, connects respectively the auxiliary chamber of air spring, the high-low pressure gas-holder of peripheral hardware and compressor and atmosphere.The air intake opening of auxiliary chamber 11 is connected with a port of levelling valve 12 through tracheal pressure, and levelling valve 12 other ends are connected with compressor with high-low pressure gas-holder, also has a port to be connected with atmosphere.By control lever, control air spring height, between car body and start platform, distance is too small, and altitude valve controls 12 to the inner air inlet of air spring, otherwise to atmospheric exhaust.
Described hydraulic system comprises pipeline, power pump, oil sources and the cooling system thereof that connects actuator 4, actuator 4 rated pressure 210--280bar, and its tailpiece of the piston rod adopts hydrostatic bearing.
By vertical, horizontal, reverse exciting bank and form a whole set of six degree of freedom excitation system and be installed in melt pit, by regulating actuator can adjust height of table, with the standard operation height of warranty test part (as air spring etc.).Excitation loading system regulates frequency, the amplitude of excitation by hydraulic control system, can realize fixed amplitude, fixed frequency loading, fixed amplitude, swept frequency excitation load and arbitrary excitation loads, aspect vertical excitation, two start platforms apply excitation can realize cophase detector and anti-phase excitation, and loading frequency variation range is from 0Hz～50Hz;
In addition, this test unit is also provided with temperature control system, and concrete formation is: peripheral hardware air-conditioning is connected with empty spring insulating cover by connecting airduct, realizes the regulatory function to air spring operating ambient temperature.
Test is under different environment temperatures, by vertical, horizontal, torsion excitation loading system, to having the air spring simulation actual condition of different physical, apply excitation, relatively two point control and four point control difference, the impact of consideration anti-side rolling torsion rod on the dynamic property of air spring.Variation of ambient temperature scope is-40 ° of C～40 ° C, and physical parameter comprises air spring capsule type, bulk volume, auxiliary chamber volume, throttle orifice diameter, connecting line length and diameter etc., two point control are that two air springs share an auxiliary chamber 11, by a levelling valve 12, control and fill exhaust, between two empty springs, there is no differential pressure valve 10, four described point control are that two empty springs have respectively independent auxiliary chamber 11 and levelling valve 12, between two air springs, by differential pressure valve 10, connect, whether can control between two auxiliary chambers UNICOM, during Dang Liang auxiliary chamber UNICOM, differential pressure valve 10 between two air springs is by inoperative, under the control of single levelling valve 12, can simulate two point control that CRH3 type car etc. adopts, when between two auxiliary chambers, valve 9 is closed, differential pressure valve between two air springs will work, coordinate the control of two levelling valves 12, can simulate four point control that CRH2 type car etc. adopts, while applying vertical anti-phase excitation, effect that can Effect of Anti side rolling torsion rod.
The test that can carry out on dual air spring comprehensive performance testing device comprises: dual air spring is vertical, horizontal, twisting test; Air spring Design of Structural parameters; The contrast test of two point control and four point control; Empty spring loses gas fault analysis etc.For measuring vehicle comfortableness, relatively two point control and four point control, relatively different physical and the temperature test on the impact of air spring dynamic performance.Considered different physical, the amplitude that applies excitation and the frequencies such as environment temperature, air spring capsule type, bulk volume, auxiliary chamber volume, throttle orifice diameter, connecting line length and diameter, the empty spring in left and right applied to phase angle difference, two point control and four point control and the impact of anti-side rolling torsion rod on the dynamic property of air spring and vehicle operating performance of excitation.By sensor, record air spring load deflexion and change, calculate the dynamic rate of air spring by self-programmed software, the kinetic parameters such as damping ratio are with frequency amplitude Changing Pattern, thereby complete the dynamic test of air spring.
Claims (6)
1. a dual air spring comprehensive performance testing device, comprise start platform, auxiliary chamber, inflating and exhausting system, hydraulic system, high-low pressure gas-holder and peripheral hardware compressor and air-conditioning form, it is characterized in that: start platform has the worktable (3) of two bearing test parts, between them, by being provided with the pipeline (18) of differential pressure valve (10), be connected, each worktable (3) below is equipped with vertical excitation charger, side is provided with transversely excited charger and reverses excitation charger, and they are connected with hydraulic system respectively; Counter weight device is comprised of grid (1) and plummer (2); One end of two ball pivot connecting rods (17) and plummer (2) are fixing, plummer (2) longitudinally the other end of the two ball pivot connecting links (17) by two ends be fixed on the chute (15) inside bearing (14) and the slide block (16) that is mated on; Plummer (2) below is provided with sensor (13) with worktable (3) corresponding position, the both sides of plummer (2) are equipped with levelling valve (12), the control lever of levelling valve (12) is connected with worktable (3), anti-side rolling torsion rod (19) is equipped with in plummer (2) front side, and anti-side rolling torsion rod (19) is connected with worktable (3) by connecting rod.
2. a kind of dual air spring comprehensive performance testing device according to claim 1, it is characterized in that: described worktable (3) upper surface has annular groove, below is provided with by three and is the vertical excitation charger that plane triangle arranges that two vertical hydraulic actuators of ball pivot (4) form.
3. a kind of dual air spring comprehensive performance testing device according to claim 1, it is characterized in that: described transversely excited charger is that the upper end of two hinged vertical hydraulic actuators (5) is hinged with the inferior angle of elevation that is hinged on the set square (7) on bearing (6), and the drift angle of set square (7) is connected with worktable (3) by single ball pivot connecting link (8).
4. a kind of dual air spring comprehensive performance testing device according to claim 1, is characterized in that: described torsion excitation charger is comprised of two groups of identical transversely excited chargers.
5. a kind of dual air spring comprehensive performance testing device according to claim 1, it is characterized in that: described auxiliary chamber (11) is barrel-like structure, inside is filled with hydraulic oil, between two auxiliary chambers (11), by being provided with the pipeline of valve (9), is connected.
6. a kind of dual air spring comprehensive performance testing device according to claim 1, it is characterized in that: the concrete formation of described inflating and exhausting system is: the air intake opening of auxiliary chamber (11) is connected with a port of levelling valve (12) through tracheal pressure, levelling valve (12) another port is connected with compressor with high-low pressure gas-holder, also has a port to be connected with atmosphere.
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| CN201320405583.7U CN203414258U (en) | 2013-07-09 | 2013-07-09 | Double air spring comprehensive property test apparatus |
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| CN201320405583.7U CN203414258U (en) | 2013-07-09 | 2013-07-09 | Double air spring comprehensive property test apparatus |
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| CN201320405583.7U Withdrawn - After Issue CN203414258U (en) | 2013-07-09 | 2013-07-09 | Double air spring comprehensive property test apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411748A (en) * | 2013-07-09 | 2013-11-27 | 西南交通大学 | Double-air-spring comprehensive performance test bench |
| CN114414234A (en) * | 2022-01-27 | 2022-04-29 | 东风商用车有限公司 | Compressed air simulation device for truck height valve and control method |
-
2013
- 2013-07-09 CN CN201320405583.7U patent/CN203414258U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411748A (en) * | 2013-07-09 | 2013-11-27 | 西南交通大学 | Double-air-spring comprehensive performance test bench |
| CN103411748B (en) * | 2013-07-09 | 2016-02-03 | 西南交通大学 | A kind of dual air spring is comprehensive performance test bed |
| CN114414234A (en) * | 2022-01-27 | 2022-04-29 | 东风商用车有限公司 | Compressed air simulation device for truck height valve and control method |
| CN114414234B (en) * | 2022-01-27 | 2023-09-01 | 东风商用车有限公司 | Compressed air simulation device for truck height valve and control method |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20160203 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |