CN104132822A - Full-hydraulic power steering gear performance test system - Google Patents
Full-hydraulic power steering gear performance test system Download PDFInfo
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- CN104132822A CN104132822A CN201310160744.5A CN201310160744A CN104132822A CN 104132822 A CN104132822 A CN 104132822A CN 201310160744 A CN201310160744 A CN 201310160744A CN 104132822 A CN104132822 A CN 104132822A
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Abstract
The invention discloses a special test system for the full-hydraulic power steering gear, which comprises an input shaft drive system, an output system, a test bench, an electric control system, a computer hardware system and a hydraulic system, wherein the input shaft drive part is mainly composed of a servo motor, a planet gear reducer, a torsion sensor and an elastic coupling; the output system mainly comprises a dual-acting linear hydraulic cylinder, a piston and a limiting block; the hydraulic system is composed of a power unit, a control unit, two oil outlet bidirectional loading units and a filter temperature control unit; the electric control system is provided with an industrial control computer and a software control system; and the computer hardware system mainly comprises an industrial computer, a PLC controller, an A/D board, an I/O board and a display. According to the special test system, curve display, process control, automatic storage, drawing, printing and the like can be carried out in real time, and test on power steering performance, pressure loss, mechanical resistance moment, manual steering, volumetric efficiency and the like can be completed.
Description
Technical field
The present invention relates to testing of equipment field, refer in particular to a kind of all-hydraulic power steering stgear performance test system, be mainly used in the performance test to the all-hydraulic power converter of automobile, comprise mechanical resistance test, power steering performance test, pressure loss test, internal leakage test, impermeability test, flow change rate test and the test of manual steering volumetric efficiency.
Background technology
On existing automobile, be generally all provided with steering gear, steering gear is the key components and parts that Vehicle Engineering turns to, be to guarantee that automobile carries out Turning travel to keep stable vitals according to driver's will, the quality of its performance directly has influence on ride safety of automobile and control stability.Therefore, to the performance test of automobile power steering, be a very important project, for determining of steering gear design parameter, the reliability of the definite and steering gear performance of steering mechanism's size all tool is of great significance.
Having of tradition mechanical steering system is simple in structure, reliable operation, and production cost is low.Its shortcoming is also obvious in the extreme: the one, although by having increased steering moment after steering gear, reduced driver's labour intensity, and, along with the raising of car speed and the increase of car mass, handling maneuver difficulty increases, and turns to more and more effort.The 2nd, owing to being mechanical connection between bearing circle and deflecting roller, its ratio of gear is fixed, be that angle transmission characteristic cannot change, cause the steering response feature of automobile uncontrollable, ratio of gear cannot be with the speed of a motor vehicle in motor turning process, the isoparametric variation of side acceleration and compensating, and driver must just carry out certain operation compensation to the steering response feature of automobile before turning to, automobile is travelled by driver's wish, so virtually increased driver's spirit and physical load.
Development along with auto industry, also occurred electric boosting steering system, it can be controlled power-assisted size, but present stage mainly relies on import, expensive, also also inapplicable for economy car, for the application of some sedan limousines with fast force aid system, because needs increase hydraulic feedback chamber, make steering control valve sectorial structure complicated, requirement on machining accuracy is high, thus to car, be not use yet, restricted application.
Appearance along with all-hydraulic steering gear is widely used on market.It is that dependence hydraulic medium is that power is realized turning function, effectively improves the dirigibility of motor turning, and alleviates widely driver's labour intensity.It is large and middle tractor, united reaper, building machinery, engineering machinery, hoisting machinery, crucial Hydraulic Elements in the low speed running on wheels mechanical-hydraulic steering such as automobile and Hydraulic Drive in Vessel steering wheel for heavy mining industry, its quality is directly connected to its steering behaviour and reliability, is related to the security of walking machine.Product development and dispatch from the factory and all must carry out properties of product test, the accuracy and precision of its testing equipment, and operability is most important, should meet product standard regulation and require all-hydraulic power steering stgear.All-hydraulic power steering stgear has following characteristics: eliminate mechanical type linkage, can reduce main frame cost, reliable light structure is provided, manoeuvrable is light, safe and reliable, can carry out continuous stepless by very little moment and control rotation, offer control loop and mechanical dimensions and select widely face, can be connected with multiple steering pump and fluid pressure supply system.Human pilot can be realized larger steering force with less steering force by it and control, and flexible, light in safety, reliable, manipulation in performance.
In vehicle design process, in order to guarantee the Performance And Reliability of all-hydraulic power steering stgear in During Process of Long-term Operation, need to carry out mechanical resistance test, power steering performance test, pressure loss test, internal leakage test, impermeability test, flow change rate test and the test of manual steering volumetric efficiency to it.And real train test is the important means of check auto parts and components performance, but due to real train test, expense is high, waste time and energy, and test efficiency is low, and in process of the test, complete monitoring is not enough.
The deficiency of bringing in order to solve real train test.At present, there are many structures to be studied hydraulic power steering device testing table both at home and abroad, the each have their own feature of its product.As the experimental bench system of the China Measures Institute, can realize following functions: the positive ability etc. of returning of input shaft moment, free clearance mensuration, steering gear sensitivity and force characteristic, steering gear when the unloaded number of total coils of steering gear and unloaded moment, steering gear full load, Test-bed Design layout approaches actual, but the load applying is the simple spring of fixing, and simulate effect is smaller.The experimental bench system of Jiaotong University Of East China, simple in structure, adopt PLC to control, reliability is higher, but fairly simple to the simulation of load.As the application number Chinese patent that is 02109786.0: automobile steering device assembly load change test platform system, load loads case by steering gear input end and completes, loading case is by a torsion spring, to simulate the torsional forces of tire, this simulation is not suitable for input end does not have sensor to represent the system of torque, and can not realize the performance test to input end to the control of output terminal load.As the application number Chinese patent that is 200910060048.0: automobile hydraulic electric power steering reliability test bench and program control test method.This patent provides that fusion is electric, the steering gear reliability testing Special experimental platform of machinery and hydraulic technique, can complete the total Test in fail-test standard, and have the not clear simulation system in real the inside.But also there is certain deficiency in this testing table: (1) cannot be tested the performance of all-hydraulic power steering stgear; (2) input drive part only has two degree of freedom, can not meet the testing requirements of different steering gears; .If application number is ZL200820088910.X Chinese patent: durability test, the hydraulic system of hydraulic booster is directly controlled by Oil pump electrical machinery, resistance simulation is mainly completed by the cylinder of one group of symmetry, increase a pair of travel switch and realize the commutation of cylinder push-rod, but this device can only complete a test of endurancing, and the performance that cannot test all-hydraulic power steering stgear.
Summary of the invention
The object of the invention is to provide a kind of Special test platform system of all-hydraulic power steering stgear, and all-hydraulic power steering stgear is carried out to mechanical resistance test, power steering performance test, pressure loss test, internal leakage test, experiments of sealing performance, flow change rate experiment and the test of manual steering volumetric efficiency.It can effectively simulate the actual working state of all-hydraulic power steering stgear, is convenient to the actual mass selective examination to all-hydraulic power steering stgear, in order to avoid there is batch problem.
Technical solution of the present invention is as follows:
An all-hydraulic power steering stgear pilot system, has comprised input shaft drive system, output system, test-bed, electric-control system, computer system hardware and hydraulic system.It is characterized in that: described input shaft drive part mainly consists of servomotor, planet-gear speed reducer, torsion sensor and spring coupling, for driving and the loading of steering gear input shaft; Described output system is provided with double acting straight line hydraulic cylinder, piston, pull bar and a positive stop; Described test-bed mainly consists of high rigidity bearing frame, work top, lighting device; Described electric-control system has adopted strong and weak electricity separately to control, and is provided with industrial computer, software control system, for controlling servomotor, hydraulic system solenoid valve, steering gear, pressure transducer and motor; Described hydraulic system is comprised of power unit, control module, two hydraulic fluid port biaxial loadings unit, filtration temperature conditioning units; Described computer system hardware has comprised industrial computer, display, A/D board, I/O board, D/A board, stepping control card, printer and uninterrupted power supply source.
Described input shaft drive part has three degree of freedom, that is: transverse shifting, move up and down and longitudinal axis transmission, can meet the test demand of testing table to different steering gears; Ta You Panasonic servomotor and planet-gear speed reducer are supporting, maximum drive torque 50Nm, maximum drive speed 100r/min, maximum rotation angle is unrestricted, torsion sensor adopts JN338A type torsion sensor, spring coupling adopts three wooden spring couplings, and the coaxiality error causing for eliminating installation and mismachining tolerance adopts leaf spring as immunity body.
The power unit of described hydraulic system is comprised of fuel tank, variable output pump and motor; Control module employing low-speed big, the cycloid hydraulic motor that volume is little, the driving power source used of oil motor obtains from main system by stable shunt valve; The biaxial loadings unit of two hydraulic fluid ports adopts and loads loop, and by automatically controlled form, and automatic switchover oil circuit is realized the mensuration of flow change rate and manual steering volumetric efficiency; The system lube purification that filters temperature conditioning unit has adopted by-passing filter, oil suction filtration and three kinds of modes of oil return filter, guarantees that oil cleanliness reaches testing requirements; Imported oil liquid temp adopts digital temperature controller, by controlling panel radiator and electric heater duty, constant 50 ℃ ± 2 ℃ of realizing oil liquid temperature; And form driving and the load simulation of output system with electric-control system.
The tensimeter of 2 kinds of ranges of size is set at four hydraulic fluid ports, and tester can directly read pressure loss numerical value from table; On instrument calibration panel, also set up a some contact thermometer, object is when tester does not carry out product testing, carries out in advance fluid heating, prompting fuel tank inner fluid heating-up temperature.
Described industrial computer adopts and grinds magnificent 610H industrial computer; Software control system has adopted PLC control.
The work top of described test-bed part is made by the thick A3 steel plate of 27mm, positive cloth Instrumentation and Control element and the operating grip installed, and Hydraulic Elements are installed at the back side, and table top is installed by test specimen and gearing thereof.And take into account the instrument, the file that are provided with tester and deposit drawer, illumination daylight lamp is installed at top.
Described electric-control system, for collection and the testing table action control of signal, adopts separately control of strong and weak electricity, and distribution control section is equipped with key switch, controls whole testing table power by key switch; The linear power supply in Chaoyang that its sensor power supply adopts linear DC power supply and is exclusively used in high-acruracy survey equipment.
Described A/D board adopts the board PC-6325A of my company's independent research, and I/O board adopts the board PC-6408 of my company's independent research, for testing table state, controls and gathers; Stepping control card adopts MPC-08 stepping control card; Display adopts 10 cun of color touch screens to carry out human-computer interactive control.
The present invention has the following advantages:
(1) the present invention is with reference to JB/T5120, JB/T9839, Q321100ZY002, tetra-product standards of Q321100ZY007 design a set of all-hydraulic steering gear test macro, provide one to merge electric, the Special test system of the all-hydraulic power steering stgear performance test of machinery and hydraulic technique, can in laboratory, complete the mechanical resistance test to all-hydraulic power steering stgear, power steering performance test, pressure loss test, internal leakage test, experiments of sealing performance, flow change rate experiment and the test of manual steering volumetric efficiency, time saving and energy saving, efficiency is high, the actual mass situation that can reflect intuitively all-hydraulic power steering stgear.
(2) the present invention has adopted and has ground magnificent 610H industrial computer, Siemens PLC C control system, data collecting card and JN338A type rotation Torsion sensing etc., and system stability is higher, measuring accuracy is high and response fast.
(3) the present invention has used touch-screen to realize the man-machine interaction between system and operator, and industrial computer and touch-screen are realized parallel control, and data are preserved, processed and generating report forms data; PLC, as the master controller of system, realizes the real-time control of system and the collection of sensing data, simple, convenient, quick.
(4) rationally distributed, the compact conformation of the present invention, has safety prevention measure, with low cost; System software has operating right management function.
Accompanying drawing explanation
Fig. 1 is control system schematic diagram of the present invention.
Fig. 2 is hydraulic scheme of the present invention.
In figure: 23, variable capacity oil pump; 24, surplus valve; 25-1 ~ 25-10, tensimeter; 26, tested steering gear; 27-1 ~ 27-3, flowmeter; 28-1 ~ 28-3, throttling valve; 29, pressure-gradient control valve; 30-1 ~ 30-2, reversal valve; 31-1 ~ 31-2, retaining valve; 32, oil filter; 33, thermometer; 34, well heater; 35, refrigeratory; 36, tachometer gage; 37, torsigraph.
Embodiment
Below in conjunction with accompanying drawing, control system of the present invention and hydraulic system are described further.
In figure, solid line is mechanical connection, and dotted line is control signal.Fig. 1 is control system, and it is by forming below: PLC controller 9, industrial computer 6, system software.PLC controller 9 is controlled industrial computer 6, is provided with the automatically controlled fabrication 5 of stepping in industrial computer 6, and stepping control card 5 is selected MPC-6408 type, with it, controls servomotor 4, and data collecting card 7 adopts the PC-6325A type A/D board of our company's independent research; PLC controller 9 is controlled hydraulic control circuit 12, hydraulic circuit 12 is controlled 30-1 and the 30-2 in two-bit triplet solenoid valve 16(Fig. 2), this solenoid valve 16 acts on double acting straight line hydraulic cylinder 17, with main pump motor 11, drive hydraulic control circuit 12, industrial computer 6 gathers the signal of pressure transducer 18, temperature sensor 19, torsion sensor 20, flow sensor 21 by data collecting card 7, steering gear 26 is monitored in real time, simultaneously, industrial computer 6 is controlled displays 14, printer 15, keyboard 13, to analog result show, printing etc.Steering gear 1 output terminal is connected with universal joint 2 input ends, and at steering gear 1 output terminal mounting limit switch 22, it is an electronic component, and without conventional, in order to control the transmission of steering gear 1, servomotor 4 is connected with planet-gear speed reducer 3.
Fig. 2 is hydraulic control system of the present invention.This hydraulic system is provided with steering gear loop and output hydraulic pressure loop, is respectively equipped with mailbox (not indicating in figure), filtrator 32 and hydraulic pump 23, surplus valve 24 and reversal valve, throttling valve 28-1,28-2 and 28-3, tensimeter 25-1 ~ 25-10 in two loops.Steering gear loop is equipped with flowmeter 27-1 ~ 27-3 and is adopted the oil pressure transmitter of oil pressure to be directly communicated with the interior working chamber of steering gear 26, and needs to install the refrigeratory 35 of cooling circuit.Output hydraulic pressure loop is in reversal valve 30-1 and 30-2 entrance dress flow speed control valve, coordinate reversal valve 30-1 and 30-2, and two throttling valve 28-1,28-2 are set, and realize biaxial loadings unit, guarantee continuous circulation, the experimental performance of oil when output system is done load and complete smoothly.
Claims (9)
1. an all-hydraulic power steering stgear pilot system, input shaft drive system, output system, test-bed, electric-control system, computer system hardware and hydraulic system have been comprised, it is characterized in that: described input shaft drive part mainly consists of servomotor, planet-gear speed reducer, torsion sensor and spring coupling, for driving and the loading of steering gear input shaft; Described output system is provided with double acting straight line hydraulic cylinder, piston, pull bar and a positive stop; Described test-bed mainly consists of high rigidity bearing frame, work top, lighting device; Described electric-control system has adopted strong and weak electricity separately to control, and is provided with industrial computer, software control system, for controlling servomotor, hydraulic system solenoid valve, steering gear, pressure transducer and motor; Described hydraulic system is comprised of power unit, control module, two hydraulic fluid port biaxial loadings unit, filtration temperature conditioning units; Described computer system hardware has comprised industrial computer, display, A/D board, I/O board, D/A board, stepping control card, printer and uninterrupted power supply source.
2. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 1, it is characterized in that: this input drive part has three degree of freedom, that is: transverse shifting, move up and down and longitudinal axis transmission, can meet the test demand of testing table to different steering gears; Ta You Panasonic servomotor and planet-gear speed reducer are supporting, maximum drive torque 50Nm, maximum drive speed 100r/min, maximum rotation angle is unrestricted, torsion sensor adopts JN338A type torsion sensor, spring coupling adopts three wooden spring couplings, and the coaxiality error causing for eliminating installation and mismachining tolerance adopts leaf spring as immunity body.
3. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 1, is characterized in that: the power unit of hydraulic system is comprised of fuel tank, variable output pump and motor; Control module employing low-speed big, the cycloid hydraulic motor that volume is little, the driving power source used of oil motor obtains from main system by stable shunt valve; The biaxial loadings unit of two hydraulic fluid ports adopts and loads loop, and by automatically controlled form, and automatic switchover oil circuit is realized the mensuration of flow change rate and manual steering volumetric efficiency; The system lube purification that filters temperature conditioning unit has adopted by-passing filter, oil suction filtration and three kinds of modes of oil return filter, guarantees that oil cleanliness reaches testing requirements; Imported oil liquid temp adopts digital temperature controller, by controlling panel radiator and electric heater duty, constant 50 ℃ ± 2 ℃ of realizing oil liquid temperature; And form driving and the load simulation of output system with electric-control system.
4. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 3, is characterized in that: four hydraulic fluid ports arrange the tensimeter of 2 kinds of ranges of size, and tester can directly read pressure loss numerical value from table; On instrument calibration panel, also set up a some contact thermometer, object is when tester does not carry out product testing, carries out in advance fluid heating, prompting fuel tank inner fluid heating-up temperature.
5. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 1, is characterized in that: industrial computer adopts and grinds magnificent 610H industrial computer; Software control system has adopted Siemens PLC C controller.
6. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 1, it is characterized in that: the work top of test-bed part is made by the thick A3 steel plate of 27mm, positive cloth Instrumentation and Control element and the operating grip installed, Hydraulic Elements are installed at the back side, and table top is installed by test specimen and gearing thereof.
7. and take into account the instrument, the file that are provided with tester and deposit drawer, illumination daylight lamp is installed at top.
8. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 1, it is characterized in that: electric-control system is for collection and the testing table action control of signal, adopt strong and weak electricity separately to control, and distribution control section is equipped with key switch, by key switch, controls whole testing table and power; The linear power supply in Chaoyang that its sensor power supply adopts linear DC power supply and is exclusively used in high-acruracy survey equipment.
9. a kind of all-hydraulic power steering stgear pilot system as claimed in claim 1, it is characterized in that: A/D board adopts the board PC-6325A of my company's independent research, I/O board adopts the board PC-6408 of my company's independent research, for testing table state, controls and gathers; Stepping control card adopts MPC-08 stepping control card.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310160744.5A CN104132822A (en) | 2013-05-03 | 2013-05-03 | Full-hydraulic power steering gear performance test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310160744.5A CN104132822A (en) | 2013-05-03 | 2013-05-03 | Full-hydraulic power steering gear performance test system |
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| CN104132822A true CN104132822A (en) | 2014-11-05 |
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| CN201310160744.5A Pending CN104132822A (en) | 2013-05-03 | 2013-05-03 | Full-hydraulic power steering gear performance test system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483111B (en) * | 2014-11-27 | 2017-02-08 | 宁波中意液压马达有限公司 | All-hydraulic steering gear test system |
| CN107024360A (en) * | 2016-02-01 | 2017-08-08 | 宁波考比锐特汽车科技有限公司 | A kind of all hydraulic pressure steering-gear performance test stand |
| CN108414250A (en) * | 2018-02-07 | 2018-08-17 | 广州汽车集团股份有限公司 | It is a kind of to simulate the testboard that hydraulic steering system works under real vehicle operating condition |
| CN108547810A (en) * | 2018-07-19 | 2018-09-18 | 常州常发农业装备工程技术研究有限公司 | A kind of hydraulic control system of energy-efficient grain combine |
| CN114524077A (en) * | 2022-01-21 | 2022-05-24 | 建湖天成液压件制造有限公司 | Intelligent follow-up energy-saving marine electric hydraulic steering engine |
-
2013
- 2013-05-03 CN CN201310160744.5A patent/CN104132822A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483111B (en) * | 2014-11-27 | 2017-02-08 | 宁波中意液压马达有限公司 | All-hydraulic steering gear test system |
| CN107024360A (en) * | 2016-02-01 | 2017-08-08 | 宁波考比锐特汽车科技有限公司 | A kind of all hydraulic pressure steering-gear performance test stand |
| CN108414250A (en) * | 2018-02-07 | 2018-08-17 | 广州汽车集团股份有限公司 | It is a kind of to simulate the testboard that hydraulic steering system works under real vehicle operating condition |
| CN108414250B (en) * | 2018-02-07 | 2021-06-04 | 广州汽车集团股份有限公司 | Test bench for simulating work of hydraulic steering system under running condition of real vehicle |
| CN108547810A (en) * | 2018-07-19 | 2018-09-18 | 常州常发农业装备工程技术研究有限公司 | A kind of hydraulic control system of energy-efficient grain combine |
| CN108547810B (en) * | 2018-07-19 | 2024-03-01 | 常州常发农业装备工程技术研究有限公司 | Hydraulic control system of energy-saving grain combine harvester |
| CN114524077A (en) * | 2022-01-21 | 2022-05-24 | 建湖天成液压件制造有限公司 | Intelligent follow-up energy-saving marine electric hydraulic steering engine |
| CN114524077B (en) * | 2022-01-21 | 2023-11-14 | 建湖天成液压件制造有限公司 | Intelligent follow-up energy-saving marine electric hydraulic steering engine |
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Application publication date: 20141105 |