CN107356442B - A kind of experimental rig of hydro-pneumatic suspension system - Google Patents
A kind of experimental rig of hydro-pneumatic suspension system Download PDFInfo
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- CN107356442B CN107356442B CN201710580357.5A CN201710580357A CN107356442B CN 107356442 B CN107356442 B CN 107356442B CN 201710580357 A CN201710580357 A CN 201710580357A CN 107356442 B CN107356442 B CN 107356442B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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Abstract
The present invention provides a kind of experimental rigs of hydro-pneumatic suspension system, including pedestal, hydro-pneumatic suspension system, motivate hydraulic cylinder, connect the pressure sensor of the excitation hydraulic cylinder and the hydraulic servo control system for controlling the excitation hydraulic cylinder, the hydro-pneumatic suspension system includes one or more groups of pneumatic cylinder groups being mounted on the base and the accumulator being connect by pipeline with the pneumatic cylinder group, two pneumatic cylinders of the pneumatic cylinder group connect top by connector, the excitation hydraulic cylinder is mounted on the base, and the cylinder rod of the excitation hydraulic cylinder connects the intermediate position of the connector in parallel.The experimental rig can realize the test analysis of the rolling capability of one or more groups of pneumatic cylinder groups using an excitation hydraulic cylinder, greatly reduce testing cost.
Description
Technical field
The invention belongs to hydro-pneumatic suspension system bench test technical fields, and in particular to a kind of test of hydro-pneumatic suspension system
Device.
Background technique
Main building block one of of the hydro pneumatic suspension as heavy vehicle, function be transmitting act on wheel and vehicle frame it
Between power and torque, and buffer and be transmitted to the impact force of vehicle frame or vehicle body by uneven road surface, and vibration caused by decaying thus, with
Guarantee the comfort of vehicle smooth-ride and driving, therefore the quality of hydro pneumatic suspension performance is directly related to vehicle comprehensive performance
Quality.
In order to sufficiently examine and test the comprehensive performance of hydro pneumatic suspension, dedicated testing stand is needed to examine hydro pneumatic suspension
Test examination.Existing most of testing stands are only applicable to the specificity analysis of single oil gas suspension cylinder, are capable of the property of analysis of experiments
It can be less.In addition, individually motivating Driven by Hydraulic Cylinder single currently, mainly passing through for the test of hydro-pneumatic suspension system both at home and abroad
The method of hanging oil cylinder carries out the test analysis of each performance.In the cost of entire testing stand, it is whole for motivating the cost of hydraulic cylinder
The 90% of a testing stand cost.Then, in the rolling capability test for carrying out hydro pneumatic suspension, the quantity of pneumatic cylinder is tested
At least two, at this time, it may be necessary to the quantity of excitation hydraulic cylinder also increase accordingly, this makes the cost of entire testing stand substantially
Degree is promoted.
Summary of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, propose a kind of test of hydro-pneumatic suspension system
Device, the experimental rig can realize the test of the rolling capability of one or more groups of pneumatic cylinder groups using an excitation hydraulic cylinder
Analysis, greatly reduces testing cost.
The purpose of the present invention can be realized by following technical proposal: a kind of experimental rig of hydro-pneumatic suspension system, packet
Include pedestal, hydro-pneumatic suspension system, excitation hydraulic cylinder, the pressure sensor of the connection excitation hydraulic cylinder and described for controlling
The hydraulic servo control system of hydraulic cylinder is motivated, the hydro-pneumatic suspension system includes one or more groups of being mounted on the pedestal
On pneumatic cylinder group and the accumulator that is connect by pipeline with the pneumatic cylinder group, the pneumatic cylinder group
Two pneumatic cylinders connect top by connector, and the excitation hydraulic cylinder is mounted on the base, and the excitation is hydraulic
The cylinder rod of cylinder connects the intermediate position of the connector in parallel.Two pneumatic cylinders in the pneumatic cylinder group of the program are to top
Connection, when carrying out rolling capability test, the active force between two pneumatic cylinders can be balanced out because being balanced to top connection, be made
The power output of hydraulic cylinder must be motivated to greatly reduce, so that the experimental rig can be realized one group using an excitation hydraulic cylinder
Or the test analysis of the rolling capability of multiple groups pneumatic cylinder group, reduce testing cost；Meanwhile only with an excitation hydraulic cylinder
Testing stand also avoid the movement interference that generates and error in the presence of multiple excitation hydraulic cylinders, keep measuring accuracy higher, more can
Meet the testing requirement of hydro-pneumatic suspension system.
Preferably, the hydro-pneumatic suspension system further includes an oil passage control valve block, and the oil passage control valve block is arranged in institute
It states on pipeline, and controls the connection between the pneumatic cylinder and the company between the accumulator and the pneumatic cylinder
It is logical.The program can be controlled by oil passage control valve between connection and accumulator and the suspension cylinder between pneumatic cylinder,
Realize the vertical stiffness test of single cylinder and communication type hydro-pneumatic suspension system.In addition, the oil passage control valve block can also be by different oil gas
Pneumatic cylinder in suspension cylinder group, which is interconnected, is combined into different connection types, to reach under a variety of mode of communicating of test
When hydro-pneumatic suspension system rolling capability.
Preferably, the pressure sensor is connected on the oil inlet and outlet of the pneumatic cylinder, the pressure sensor
For testing the oil pressure variation of the rod chamber and rodless cavity of the pneumatic cylinder.
Preferably, the hydraulic servo control system includes industrial personal computer, hydraulic pump, servo valve and servo amplifier, institute
It states industrial personal computer sending signal and passes to the servo valve through the servo amplifier, the hydraulic pump provides pressure oil, described to watch
It takes valve and oil circuit opening degree is controlled according to signal, to control the movement of the excitation hydraulic cylinder.
Preferably, the hydraulic servo control system further includes a displacement sensor, and institute's displacement sensors are mounted on institute
The pneumatic cylinder is stated on pedestal and is parallel to, institute's displacement sensors are used to test the displacement deformation of the pneumatic cylinder
Amount, and deflection signal is transferred to the industrial personal computer.
Preferably, the rod chamber of two pneumatic cylinders of the pneumatic cylinder group connects top by connector,
The rodless cavity of two pneumatic cylinders is each attached on the pedestal.
Compared with prior art, a kind of beneficial effect of the test device of hydro-pneumatic suspension system provided by the invention is:
1. two pneumatic cylinders in pneumatic cylinder group of the invention connect top, so that the power output of excitation hydraulic cylinder
It greatly reduces, and the power output is the lateral force at vehicle centroid, according to the specific installation dimension and mass center of pneumatic cylinder
To the distance of roll axis, moment resulting from sidesway can be calculated.
2. one or more groups of pneumatic cylinder groups can be realized using an excitation hydraulic cylinder in experimental rig of the invention
The test analysis of rolling capability, reduces testing cost, can reduce by 40% or more testing cost.
3. experimental rig of the invention only uses an excitation hydraulic cylinder, avoids and generate in the presence of multiple excitation hydraulic cylinders
Movement interference and error keep measuring accuracy higher, can more meet the testing requirement of hydro-pneumatic suspension system.
4. the rolling capability that experimental rig of the invention can test hydro-pneumatic suspension system when under a variety of mode of communicating.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the arrangement schematic diagram of multiple groups pneumatic cylinder group of the invention；
Fig. 3 is the arrangement schematic diagram of one group of pneumatic cylinder group of the invention；
Fig. 4 is flow diagram of the invention.
Specific embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is further described.
As shown in Figure 1, a kind of experimental rig of hydro-pneumatic suspension system of the invention, including pedestal 10, hydro-pneumatic suspension system
20, hydraulic cylinder 30, the pressure sensor 40 of connection excitation hydraulic cylinder 30 are motivated and for controlling the excitation movement of hydraulic cylinder 30
Hydraulic servo control system 50.
Hydro-pneumatic suspension system 20 include one or more groups of pneumatic cylinder groups 21 being mounted on pedestal 10, by pipeline with
The accumulator 22 that pneumatic cylinder group 21 connects and the oil passage control valve block 23 being arranged on pipeline.It is this in conjunction with Fig. 3, Fig. 3
The arrangement schematic diagram of one group of pneumatic cylinder group 21 of invention, the rod chamber of the pneumatic cylinder 1 of pneumatic cylinder group 21
211a connects top by the rod chamber 212a of connector 60 and pneumatic cylinder 2 212, the rodless cavity of pneumatic cylinder 1
The rodless cavity 212b of 211b and pneumatic cylinder 2 212 is each attached on pedestal 10.Excitation hydraulic cylinder 30 is mounted on pedestal 10,
And the cylinder rod of hydraulic cylinder 30 is motivated to connect the intermediate position of connector 60 in parallel, i.e. the intermediate position of connector 60 is equipped with and vertically prolongs
Extending portion, cylinder rod are vertically connected on extension.By connecting two pneumatic cylinders to top arrangement, between two pneumatic cylinders
Active force can be balanced out because being balanced to top connection, so that the power output of excitation hydraulic cylinder 30 greatly reduces, so that the examination
The test analysis for the rolling capability that experiment device motivates hydraulic cylinder 30 that one group of pneumatic cylinder group 21 can be realized using one.In conjunction with
Fig. 2, Fig. 2 are the arrangement schematic diagrams of multiple groups pneumatic cylinder group 21 of the invention, each group pneumatic cylinder group 21 with excitation liquid
Cylinder pressure 30 connects in parallel, makes each pneumatic cylinder is intercommunicated to be combined into different connection types by oil passage control valve block 23, from
And test the rolling capability of hydro-pneumatic suspension system when under a variety of mode of communicating.Upper two oleo-pneumatic suspension of multiple groups pneumatic cylinder group 21
Cylinder connects top, then connects excitation hydraulic cylinder 30 in parallel by connector 60, so that the experimental rig is swashed using one
Encouraging hydraulic cylinder 30 can be realized the test analysis of rolling capability of multiple groups group pneumatic cylinder group 21.
Next, the oil that one group of pneumatic cylinder group 21 of detailed description and accumulator 22 and oil passage control valve block 23 are constituted
The specific connection of gas suspension system 20, the hydro-pneumatic suspension system 20 that multiple groups pneumatic cylinder group 21 is formed is in one group of oleo-pneumatic suspension
It does and changes on the basis of cylinder group 21.The rod chamber 211a of pneumatic cylinder 1 is by the first piping connection in oil passage control valve
On block 23, it is then connected to the rodless cavity 212b of pneumatic cylinder 2 212；The rodless cavity 211b of pneumatic cylinder 1 passes through the
Then two piping connections are connected to the rod chamber 212a of pneumatic cylinder 2 212 on oil passage control valve block 23.Two accumulators 22
It is both connected on oil passage control valve block 23, by the first pipeline of selectable connection of oil passage control valve block 23 and the second pipeline, makes
Accumulator filling into the oil liquid of the first pipeline or the second pipeline, or putting to the oil liquid of the first pipeline or the second pipeline
Out.
As shown in Figure 1, pressure sensor 40 is connected on the oil inlet and outlet of pneumatic cylinder, pressure sensor 40 passes through sense
The oil pressure variation of the rod chamber and rodless cavity of pneumatic cylinder is answered, for calculating excitation hydraulic cylinder power output and two oleo-pneumatic suspensions
The stress of cylinder.According to the structure size of vehicle, motivate hydraulic cylinder power output that can be converted into equivalent lateral force and lateral
Acceleration.Then the front for being parallel to pneumatic cylinder 1 is additionally provided with a displacement sensor 70, and displacement sensor 70 is for feeling
Pneumatic cylinder group 21 can be calculated in conjunction with pneumatic cylinder stress in the displacement deformation amount for answering pneumatic cylinder 1
Rolling capability.
In conjunction with Fig. 1 and Fig. 4, hydraulic servo control system 50 includes industrial personal computer 51, hydraulic pump 52, servo valve 53 and servo
Amplifier 54, industrial personal computer 51 connect servo amplifier 54, and servo amplifier 54 connects servo valve 53, the connection excitation liquid of hydraulic pump 52
Cylinder pressure 30, for providing pressure oil, servo valve 53 is arranged on oil circuit, for controlling oil circuit opening degree, to control excitation liquid
The movement of cylinder pressure 30.Specific workflow are as follows: firstly, industrial personal computer 51 sends desired displacement signal through servo amplifier 54 to signal
It amplifies, is then passed to servo valve 53, servo valve 53 controls oil circuit opening degree according to signal, and hydraulic pump 52 provides wherein
Then pressure oil motivates hydraulic cylinder 30 according to signal movement respective distance；Then hydro-pneumatic suspension system 20 is made corresponding sports and is rung
It answers, then pressure sensor 40 detects the pressure signal of pneumatic cylinder；Displacement sensor 70 detects pneumatic cylinder reality
When telescopic displacement signal, and the real-time displacement of acquisition feedback will be compared on industrial personal computer 51 with desired displacement, and then makes
PID is adjusted.Then in addition on one side, oil gas can be obtained by corresponding calculation processing according to collected pressure signal and displacement signal
The roll characteristics of suspension system.
This experimental rig can also realize the vertical stiffness test of single cylinder and communication type hydro-pneumatic suspension system, when it is implemented,
By controlling oil passage control valve block 23, realizes that the upper and lower cavity of pneumatic cylinder 1 is connected and is connected to accumulator 22, break simultaneously
The connection of pneumatic cylinder 2 212 is opened, realizes the vertical stiffness test of communication type suspension.Multiple groups communication type hydro pneumatic suspension system
Stiffness coefficient can be amplified corresponding multiple (i.e. cylinder number) on the basis of single cylinder is tested and phase can be obtained by the vertical stiffness test of system
Close vertical property.
The above is only a preferred embodiment of the present invention, its scope of the patents is not intended to limit, for those skilled in the art
For member, other various corresponding changes and deformation can be made according to the above description of the technical scheme and ideas, and owned
These change and deformation all should belong within the scope of protection of the claims of the present invention.
Claims (6)
1. a kind of experimental rig of hydro-pneumatic suspension system, including pedestal, hydro-pneumatic suspension system, excitation hydraulic cylinder, connection is described swashs
Encourage the pressure sensor of hydraulic cylinder and the hydraulic servo control system for controlling the excitation hydraulic cylinder, the oil gas
Suspension system includes one or more groups of pneumatic cylinder groups being mounted on the base and by pipeline and the oil gas hanging
Hang the accumulator of cylinder group connection, it is characterised in that: two pneumatic cylinders of the pneumatic cylinder group connect top by connector
It connects, the excitation hydraulic cylinder is mounted on the base, and the cylinder rod of the excitation hydraulic cylinder connects the connector in parallel
Intermediate position.
2. the experimental rig of hydro-pneumatic suspension system as described in claim 1, it is characterised in that: the hydro-pneumatic suspension system also wraps
An oil passage control valve block is included, the oil passage control valve block is arranged on the pipeline, and is controlled between the pneumatic cylinder
Connection and the connection between the accumulator and the pneumatic cylinder.
3. the experimental rig of hydro-pneumatic suspension system as described in claim 1, it is characterised in that: the pressure sensor is connected to
On the oil inlet and outlet of the pneumatic cylinder, the pressure sensor is for testing the rod chamber of the pneumatic cylinder and without bar
The oil pressure of chamber changes.
4. the experimental rig of hydro-pneumatic suspension system as described in claim 1, it is characterised in that: the hydraulic servo control system
Including industrial personal computer, hydraulic pump, servo valve and servo amplifier, the industrial personal computer issues signal and transmits through the servo amplifier
To the servo valve, the hydraulic pump provides pressure oil, and the servo valve controls oil circuit opening degree according to signal, to control institute
State the movement of excitation hydraulic cylinder.
5. the experimental rig of hydro-pneumatic suspension system as claimed in claim 4, it is characterised in that: the hydraulic servo control system
It further include a displacement sensor, institute's displacement sensors are mounted on the base and are parallel to the pneumatic cylinder, described
Displacement sensor is used to test the displacement deformation amount of the pneumatic cylinder, and deflection signal is transferred to the industrial personal computer.
6. the experimental rig of hydro-pneumatic suspension system as described in claim 1, it is characterised in that: the two of the pneumatic cylinder group
The rod chamber of the pneumatic cylinder connects top by connector, and the rodless cavity of two pneumatic cylinders is each attached to described
On pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580357.5A CN107356442B (en) | 2017-07-17 | 2017-07-17 | A kind of experimental rig of hydro-pneumatic suspension system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580357.5A CN107356442B (en) | 2017-07-17 | 2017-07-17 | A kind of experimental rig of hydro-pneumatic suspension system |
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| Publication Number | Publication Date |
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| CN107356442A CN107356442A (en) | 2017-11-17 |
| CN107356442B true CN107356442B (en) | 2019-11-19 |
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| CN201710580357.5A Active CN107356442B (en) | 2017-07-17 | 2017-07-17 | A kind of experimental rig of hydro-pneumatic suspension system |
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| CN115979682B (en) * | 2023-03-21 | 2023-07-18 | 山东福阳液压科技有限公司 | Hydro-pneumatic suspension testing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3331170C1 (en) * | 1983-06-15 | 1984-12-13 | Boge Gmbh, 5208 Eitorf | Device for determining the path of a piston of hydraulic, pneumatic or hydropneumatic units |
| CN105510059B (en) * | 2015-11-25 | 2017-12-29 | 集美大学 | Hydro pneumatic suspension test equipment |
| CN105841904B (en) * | 2016-03-30 | 2019-08-06 | 北京航天发射技术研究所 | A kind of test method in hydro-pneumatic spring service life |
| CN105738100B (en) * | 2016-04-22 | 2018-07-24 | 北京理工大学 | A kind of hydro-pneumatic spring performance test system and test method |
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