CN102878151A - Multifunctional test device for high-speed heavy duty hydraulic system - Google Patents
Multifunctional test device for high-speed heavy duty hydraulic system Download PDFInfo
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- CN102878151A CN102878151A CN2012103478232A CN201210347823A CN102878151A CN 102878151 A CN102878151 A CN 102878151A CN 2012103478232 A CN2012103478232 A CN 2012103478232A CN 201210347823 A CN201210347823 A CN 201210347823A CN 102878151 A CN102878151 A CN 102878151A
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Abstract
A multifunctional test device for a high-speed heavy duty hydraulic system comprises a hydraulic pump station, an independent medium viscosity adjusting device, a computer control and data acquisition system, a heavy duty hydraulic lifting platform and an over-speed protection hydraulic loop, wherein the independent medium viscosity adjusting device is connected with the hydraulic pump station and a temperature sensor; the hydraulic pump station is connected with a first pressure sensor and the over-speed protection hydraulic loop; the temperature sensor and the first pressure sensor are connected with the computer control and data acquisition system; the computer control and data acquisition system is connected with a displacement sensor, an acceleration sensor, a travel switch and a second pressure sensor; and the displacement sensor, the acceleration sensor, the travel switch and the second pressure sensor are mounted on the heavy duty hydraulic lifting platform. According to the invention, requirements of multifunctional tests of hydraulic lifting platforms of different medium viscosities, different loads, and different running speeds are met effectively, and the applicability is favorable.
Description
Technical field
The present invention relates to pilot system, the high-speed overload hydraulic system that relates to can be the industrial hydraulic systems such as hudraulic lift, ocean platform, stage elevating system, also can be high-altitude operation vehicle, building hoist, the engineering machinery hydraulic systems such as logistics machinery.The invention belongs to the hydraulics field.
Background technique
Hydraulic system easily realizes stepless speed regulation and accurately control because its power-weight ratio is large, moves steadily, and in logistics, traffic, the ocean, electric power, aviation, the fields such as construction are used very extensive.
And the high-speed overload hydraulic system is because load is large, movement velocity is high, its Steady speed under different operating modes, buffer-braking, the problems such as Security be most crucial problem often, how to guarantee that the high-speed overload hydraulic system can safe and reliablely turn round, how high-speed overload hydraulic system each several part is carried out efficiency test, to need the designer, the Installation and Debugging personnel, the inspector considers in detail.
At present, for all size, the high-speed overload hydraulic system of various functions, country or industry have all been put into effect relevant test standard and method, and the test clauses and subclauses are various, test conditions is different, if the independent design experiment device of certain hydraulic system or a certain test, not only can prolong the test period, and can increase testing expenses and test difficulty, cause inconvenience for engineering design, project construction, appraisal of project and assessment, therefore, how designing the test battery device, can satisfy the needs of the various tests of various high-speed overload hydraulic system, is problem demanding prompt solution.
Summary of the invention
Can't satisfy various test needs, the relatively poor deficiency of applicability in order to overcome existing high-speed overload hydraulic STS system test set, the high-speed overload hydraulic system that the invention provides a kind of to satisfy effectively different medium viscosity, different loads, different motion speed carries out multifunction test, the good multifunction test device of applicability.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high-speed overload hydraulic system multifunctional testing apparatus; comprise hydraulic power unit; the standalone media apparatus for regulating viscosity; computer control and data acquistion system; overload hydraulic lift platform and overspeed protection oil hydraulic circuit; described standalone media apparatus for regulating viscosity and described hydraulic power unit; temperature transducer connects; described hydraulic power unit is connected with the overspeed protection oil hydraulic circuit with the first pressure transducer; described temperature transducer; the first pressure transducer is connected with data acquistion system with described computer control; described computer control and data acquistion system and displacement transducer; acceleration transducer; position limit switch; the second pressure transducer connects, described displacement transducer; acceleration transducer; position limit switch; the second pressure transducer is installed on the described overload hydraulic lift platform.
Further, in the described hydraulic power unit, relief valve, solenoid directional control valve, individual event valve, relief valve, manual lowering valve, electric control one-way valve and electro-hydraulic proportional throttle valve all are installed on the valve piece, and with this valve piece and motor, oil hydraulic pump, oil absorption filter, in-line filter and fuel tank integrated installation together.
Further, described standalone media apparatus for regulating viscosity comprises viscosity adjusting pump, oil absorption filter, heating control loop and cooling control loop, and described viscosity is regulated the temperature transducer of installing in the pump in order to the monitoring viscosity temperature.
Further again, described overload hydraulic lift platform falls platform for the straight jacking of long stroke plunger case, comprises the hydraulic elevating platform of plunger case, hydraulic bjuffer and variable load.
Beneficial effect of the present invention is mainly manifested in: the high-speed overload hydraulic system of to satisfy effectively different medium viscosity, different loads, different motion speed carries out multifunction test, applicability is good.
Description of drawings
Fig. 1 is according to high-speed overload hydraulic system multifunctional testing apparatus schematic diagram of the present invention, wherein, and 1; motor; 2; oil hydraulic pump, 3; oil absorption filter, 4; in-line filter; 5; relief valve, 6; two-position four-way solenoid valve, 7; one-way valve; 8; relief valve, 9; manual lowering valve, 10; electric control one-way valve; 11; electro-hydraulic proportional throttle valve, 12; the overspeed protection safety circuit, 13; plunger case; 14; hydraulic bjuffer, 15; the overload hydraulic lift platform, 16; displacement transducer; 17; acceleration transducer; 18; position limit switch, 19; pressure transducer, 20; pressure transducer; 21; computer control and data acquistion system; 22; temperature transducer, 23; fuel tank, 24; dielectric viscosity is regulated pump; 25; oil absorption filter; 26; the heating control loop, 27; the cooling control loop, 28; the dielectric viscosity controlling device.
Fig. 2 is the high-speed overload hydraulic system multifunctional testing apparatus schematic diagram for embodiment, wherein, and 1, motor, 2, oil hydraulic pump, 3, oil absorption filter, 4, in-line filter, 5, relief valve, 6, two-position four-way solenoid valve, 7, one-way valve, 8, relief valve, 9, manual lowering valve, 10, the automatically controlled one-way valve of plug-in type, 11, the type plug-in electro-hydraulic ratio throttle valve, 12, pipe rupture valve, 13, plunger case, 14, hydraulic bjuffer, 15, the overload hydraulic lift platform, 16, displacement transducer, 17, acceleration transducer, 18, position limit switch, 19, pressure transducer, 20, pressure transducer, 21, computer control and data acquistion system, 22, temperature transducer, 23, fuel tank, 24, dielectric viscosity is regulated pump, 25, oil absorption filter, 26, the heating control loop, 27, the cooling control loop, 28, the dielectric viscosity controlling device.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
See figures.1.and.2, a kind of high-speed overload hydraulic system multifunctional testing apparatus comprises motor 1; oil absorption filter 2, oil hydraulic pump 3, in-line filter 4; relief valve 5, two-position four-way solenoid directional control valve 6, one-way valve 7; relief valve 8, manual lowering valve 9, electric control one-way valve 10; electro-hydraulic proportional throttle valve 11, overspeed protection oil hydraulic circuit 12, plunger case 13; hydraulic bjuffer 14; the hydraulic elevating platform 15 of variable load, displacement transducer 16, acceleration transducer 17; position limit switch 18; pressure transducer 19, pressure transducer 20, computer control and data acquistion system 21; temperature transducer 22, the parts such as dielectric viscosity controlling device 28.
Adopt integrated and modular design method, relief valve 5, solenoid directional control valve 6, individual event valve 7, relief valve 8, manual lowering valve 9, electric control one-way valve 10, electro-hydraulic proportional throttle valve 11 all is installed on the valve piece, and with this valve piece and motor 1, oil hydraulic pump 2, oil absorption filter 3, in-line filter 4 and fuel tank 24 integrated installations are hydraulic power unit 29 together.
Standalone media apparatus for regulating viscosity 28 comprises viscosity adjusting pump 24, oil absorption filter 25, heating control loop 26, the parts such as cooling control loop 27, can freeze and heat medium respectively by heating control loop and cooling control loop, can regulate in real time extremely desirable test temperature of medium temperature by temperature transducer 22 feedback control.
Adopt the straight jacking of long stroke plunger case to fall the scheme of platform, this scheme lift platform can bear larger load, and the displacement of lift platform and oil cylinder and speed is the relation of 1:1, and do not have the links such as steel wire cable, and the variation of platform speed can well reflect the variation of flow system flow.
Adopt electro-hydraulic proportional throttle valve to come the rate of descent of lift platform is regulated, the signal of electro-hydraulic proportional throttle valve can be provided automatically by computer, also can be provided by the automatically controlled knob of operating table.
Adopt the electric control one-way valve 10 of large flow to simulate lift platform because structure partial destroys, the lift platform hypervelocity tenesmus that pipeline breaking or other reasons cause.
Adopt oil absorption filter 3, in-line filter 4 guarantees the system media turbidity test.In the dielectric viscosity controlling device, oil absorption filter 25 is installed is come protective medium viscosity to regulate pump 24 in addition.
Adopt relief valve 8 to reduce the hydraulic shock that causes when lift platform stops because of overspeed protection, protection hydraulic system safety.
Adopt manual lowering valve 9 manually to control the decline of lift platform 15, the rate of descent of the aperture lifting controllable platform 15 by manual lowering valve.
Adopts pressure sensor 19 and 20 is measured respectively the pressure of overspeed protection oil hydraulic circuit the place ahead and rear pipeline.
Adopt displacement transducer 16 to measure lift platform 15 displacements, and adopt the displacement signal differential to calculate lift platform speed, in addition, measure the acceleration of lift platform 15 by acceleration transducer 17.
Adopt computer control and data acquistion system 21 to gather displacement transducer 16, acceleration transducer 17, position limit switch 18, pressure transducer 19,20, temperature transducer 22 signals such as grade, and control two-position four-way solenoid valve 6, electric control one-way valve 10, the output of electro-hydraulic proportional throttle valve 11.
For preventing that lift platform 15 hypervelocity tenesmus from causing security incident, native system arranges 4 road safety measures:
The overspeed protection oil hydraulic circuit detects in real time to flow system flow, and when flow surpassed setting value, oil hydraulic circuit cut off rapidly oil circuit, makes lift platform 15 stop to continue tenesmus.
Computer control and data acquistion system 21 detect the motion speed of lift platform 15 in real time, when motion speed surpasses setting value, and system's autoshutdown two-position four-way solenoid valve 6, electric control one-way valve 10, electro-hydraulic proportional throttle valve 11 cuts off hydraulic circuit, makes lift platform 15 stop to continue tenesmus.
When lift platform touching position limit switch 18, computer receives the position limit switch signal, sends instruction autoshutdown two-position four-way solenoid valve 6, electric control one-way valve 10, and electro-hydraulic proportional throttle valve 11 cuts off hydraulic circuit, makes lift platform 15 stop to continue tenesmus.
When above-mentioned measure was all lost efficacy, lift platform touching hydraulic bjuffer 14, the buffer function by hydraulic bjuffer 14 reduces rapidly the speed of lift platform 15, last safety stop motion.
The described high-speed overload hydraulic system multifunctional of present embodiment testing apparatus, its advantage is:
Adopt the straight top of long stroke plunger case scheme, and the lift platform load can be regulated, and dielectric viscosity can be regulated, and the lift platform movement velocity can be regulated, thereby real simulation the situations of various hydraulic systems under various operating conditionss, have that test function is comprehensive, advantages such as test specification is wide, strong adaptability.
Adopt electro-hydraulic proportional throttle valve to control lift platform speed, adopt electric control one-way valve to simulate the overload hydraulic lift platform because pipe breakage, the hypervelocity tenesmus that the reasons such as structural damage cause, adopt computer control and data acquistion system to carry out automatic imitation experiment, data processing, laboratory report generation, have easy and simple to handle, the advantage that automaticity is high.
Adopt the overspeed protection oil hydraulic circuit, the computer real-time monitoring protection, position limit switch triggers, and the four road safety measure such as hydraulic bjuffer can both guarantee security of system and personal safety under various test conditionss, have the high advantage of safety class.
Adopt the displacement of displacement sensor lift platform, and displacement signal is carried out differential process and to obtain the lift platform rate signal, and then be converted to the indirect measurement scheme of flow system flow, rather than adopt the scheme of flowmeter being installed at pipeline to come the direct-detection flow system flow.This flow rate testing methods has overcome the flowmeter low-response, and the difficult drawback that transient flow is accurately measured has improved the measuring accuracy of system and tested confidence level.
Fig. 2 is a specific embodiment of the present invention, carries out type approval test for the pipe rupture valve that must install in the hudraulic lift, Flow characteristics and Pressure characteristics when turn-offing to detect the exceed the speed limit turn-off characteristic of such valve when descending of hudraulic lift, to analyze it.
Fig. 2 is different from Fig. 1 to be: electric control one-way valve 10 is the automatically controlled one-way valve of plug-in type among Fig. 2; electro-hydraulic proportional throttle valve 11 is the type plug-in electro-hydraulic ratio throttle valve; to satisfy the needs of the large flow of system, overspeed protection safety circuit 12 is the pipe rupture valve 12 among Fig. 2 among Fig. 1.
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (4)
1. high-speed overload hydraulic system multifunctional testing apparatus; it is characterized in that: comprise hydraulic power unit; the standalone media apparatus for regulating viscosity; computer control and data acquistion system; overload hydraulic lift platform and overspeed protection oil hydraulic circuit; described standalone media apparatus for regulating viscosity and described hydraulic power unit; temperature transducer connects; described hydraulic power unit is connected with the overspeed protection oil hydraulic circuit with the first pressure transducer; described temperature transducer; the first pressure transducer is connected with data acquistion system with described computer control; described computer control and data acquistion system and displacement transducer; acceleration transducer; position limit switch; the second pressure transducer connects, described displacement transducer; acceleration transducer; position limit switch; the second pressure transducer is installed on the described overload hydraulic lift platform.
2. high-speed overload hydraulic system multifunctional testing apparatus as claimed in claim 1, it is characterized in that: in the described hydraulic power unit, relief valve, solenoid directional control valve, individual event valve, relief valve, manual lowering valve, electric control one-way valve and electro-hydraulic proportional throttle valve all are installed on the valve piece, and with this valve piece and motor, oil hydraulic pump, oil absorption filter, in-line filter and fuel tank integrated installation together.
3. high-speed overload hydraulic system multifunctional testing apparatus as claimed in claim 1 or 2, it is characterized in that: described standalone media apparatus for regulating viscosity comprises viscosity adjusting pump, oil absorption filter, heating control loop and cooling control loop, and described viscosity is regulated the temperature transducer of installing in the pump in order to the monitoring viscosity temperature.
4. high-speed overload hydraulic system multifunctional testing apparatus as claimed in claim 1 or 2, it is characterized in that: described overload hydraulic lift platform falls platform for the straight jacking of long stroke plunger case, comprises the hydraulic elevating platform of plunger case, hydraulic bjuffer and variable load etc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103478232A CN102878151A (en) | 2012-09-19 | 2012-09-19 | Multifunctional test device for high-speed heavy duty hydraulic system |
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| CN2012103478232A CN102878151A (en) | 2012-09-19 | 2012-09-19 | Multifunctional test device for high-speed heavy duty hydraulic system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644153A (en) * | 2013-12-06 | 2014-03-19 | 南车资阳机车有限公司 | Oil cylinder power unit of duct piece assembly machine of shield tunneling machine |
| CN103883588A (en) * | 2014-03-03 | 2014-06-25 | 浙江大学 | Control method for hydraulic oil cylinder collision buffering system of bulldozer |
| CN105067249A (en) * | 2015-08-18 | 2015-11-18 | 佛山市百进一精密机械有限公司 | Device capable of completely detecting working performance of hydraulic buffer |
| CN105201960A (en) * | 2015-09-08 | 2015-12-30 | 宁波亿控自动化科技有限公司 | Detection device for dual-clutch electronic hydraulic control module |
| CN105697459A (en) * | 2016-04-12 | 2016-06-22 | 燕山大学 | Hydraulic state detection and maintenance vehicle |
| WO2018157549A1 (en) * | 2017-03-01 | 2018-09-07 | 山东科技大学 | Intelligent feedback type variable throttle buffering system and method |
| CN108843655A (en) * | 2018-08-22 | 2018-11-20 | 湘潭大学 | A kind of automatic speed transmission electrohydraulic modular environment adaptive testing platform |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644153A (en) * | 2013-12-06 | 2014-03-19 | 南车资阳机车有限公司 | Oil cylinder power unit of duct piece assembly machine of shield tunneling machine |
| CN103883588A (en) * | 2014-03-03 | 2014-06-25 | 浙江大学 | Control method for hydraulic oil cylinder collision buffering system of bulldozer |
| CN103883588B (en) * | 2014-03-03 | 2016-02-03 | 浙江大学 | Push-harrower hydraulic jack crash cushion systems controlling method |
| CN105067249A (en) * | 2015-08-18 | 2015-11-18 | 佛山市百进一精密机械有限公司 | Device capable of completely detecting working performance of hydraulic buffer |
| CN105201960A (en) * | 2015-09-08 | 2015-12-30 | 宁波亿控自动化科技有限公司 | Detection device for dual-clutch electronic hydraulic control module |
| CN105201960B (en) * | 2015-09-08 | 2017-07-25 | 宁波亿控自动化科技有限公司 | Double clutch electric ＆ hydraulic control module detecting device |
| CN105697459A (en) * | 2016-04-12 | 2016-06-22 | 燕山大学 | Hydraulic state detection and maintenance vehicle |
| WO2018157549A1 (en) * | 2017-03-01 | 2018-09-07 | 山东科技大学 | Intelligent feedback type variable throttle buffering system and method |
| CN108843655A (en) * | 2018-08-22 | 2018-11-20 | 湘潭大学 | A kind of automatic speed transmission electrohydraulic modular environment adaptive testing platform |
| CN108843655B (en) * | 2018-08-22 | 2020-09-22 | 湘潭大学 | Test method for test bench for environmental adaptability of electro-hydraulic module of automatic transmission |
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Application publication date: 20130116 |