CN106762979B - A kind of electrical power reclaiming type hydraulic pump motor reliability test and method - Google Patents
A kind of electrical power reclaiming type hydraulic pump motor reliability test and method Download PDFInfo
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- CN106762979B CN106762979B CN201611123769.8A CN201611123769A CN106762979B CN 106762979 B CN106762979 B CN 106762979B CN 201611123769 A CN201611123769 A CN 201611123769A CN 106762979 B CN106762979 B CN 106762979B
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- inversion unit
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/855—Testing of fluid pressure systems
Abstract
A kind of electrical power reclaiming type hydraulic pump motor reliability test and method, rectification unit are connected with dc bus row；Dc bus row is connected with inversion unit I；Inversion unit I and asynchronous servomotor I connect；Asynchronous servomotor I and subject hydraulic pump are coaxially connected, and subject hydraulic pump output high pressure oil driving subject hydraulic motor, the T oil ports of three position four-way directional control valve are equipped with proportional pressure control valve；It is tested hydraulic motor and asynchronous servomotor II is coaxially connected, realizes the loading to system to the direct torque of asynchronous servomotor II by inversion unit II；One-way valved outlet and by by reversal valve, bidirectional hydraulic pump, the auxiliary system that forms of asynchronous servomotor III and inversion unit III.Beneficial effects of the present invention are：The flow matches of subject hydraulic pump and hydraulic motor are realized using the auxiliary system of bidirectional hydraulic pump and asynchronous servomotor III composition, had not only met Dual-pump flow-converging driving subject hydraulic motor operating mode, but also reduce the loss of overflow power, improve test scope and efficiency.
Description
Technical field
The present invention relates to hydraulic pump motor reliability test, more particularly to a kind of electrical power reclaiming type hydraulic pump motor
Reliability test and method.
Background technology
The kernel component of hydraulic pump and hydraulic motor as hydraulic system, its reliability directly affect whole system
Security.Hydraulic pump motor reliability test has the characteristics that test period length and energy consumption are big, its test platform is typically based on work(
Rate way of recycling is developed.At present, domestic colleges and universities and enterprise on reliability test frequently with mechanically or hydraulically compensating power
Way of recycling, organic efficiency is high, but has stringent matching will for the discharge capacity and torque of subject hydraulic pump and subject hydraulic motor
Ask, test scope is restricted, suitable for the reliability test of fixed type product.And electrical power way of recycling power bracket
Greatly, load mode is simple and versatile, it can be achieved that the reliability test of Multiple Type hydraulic pump motor, in polytypic multiple types
Hydraulic pump motor reliability test occasion compensates Power Recovery mode advantageously than mechanically and hydraulically, the recycling of traditional electrical power
Mode is in order to meet the flow matches of measurand, and there are relief power loss.Therefore, electrical power reclaiming type hydraulic pressure how is improved
Pump and hydraulic motor reliability test testing efficiency, reduction energy loss, increase measurand scope have become urgently
The key issue of solution.
The content of the invention
Present invention aims at provide a kind of new energy-efficient and versatility high electrical power reclaiming type hydraulic pump horse
Up to reliability test and method.
To achieve the above object, following technical scheme is employed：The invention mainly comprises rectification unit, dc bus row,
Inversion unit I, inversion unit II, inversion unit III, asynchronous servomotor I, asynchronous servomotor II, asynchronous servomotor III,
It is tested hydraulic pump, pressure sensor I, pressure sensor II, pressure sensor III, flow sensor I, flow sensor II, stream
Quantity sensor III, flow sensor IV, check valve, reversal valve, proportional pressure control valve, three position four-way directional control valve, temperature sensor I,
It is steady that temperature sensor II, subject hydraulic motor, bidirectional hydraulic pump, fuel tank, rectification unit and dc bus row are connected as its offer
Fixed and controllable voltage power supply；Dc bus is arranged is connected as electric energy needed for its offer with I one end of inversion unit, and inversion unit I is another
One end is connected with asynchronous servomotor I, carries out torque to asynchronous servomotor I based on vector control technology and rotating speed controls；It is different
The output terminal for walking servomotor I is coaxially connected with subject hydraulic pump, and subject hydraulic pump inlet port is connected with fuel tank, is tested hydraulic pump
Oil outlet the P hydraulic fluid ports with three position four-way directional control valve, reversal valve one end are connected respectively；It is tested two actuator ports of hydraulic motor
It is connected respectively with three position four-way directional control valve, and pressure sensor II, I and of temperature sensor is respectively equipped with two actuator ports
Pressure sensor III, temperature sensor II；It is tested hydraulic motor and asynchronous servomotor II is coaxially connected, asynchronous servomotor II
It is connected by inversion unit II with dc bus row；The other end of reversal valve pumps a hydraulic fluid port with bidirectional hydraulic and is connected, two-way liquid
Another hydraulic fluid port of press pump is connected with fuel tank, and bidirectional hydraulic pump is coaxially connected with asynchronous servomotor III, and asynchronous servomotor III is logical
Inversion unit III is crossed to connect with rectilinear generatrix row；Reversal valve, bidirectional hydraulic pump, asynchronous servomotor III and inversion unit III form
Auxiliary system.
Further, flow sensor I, pressure sensor I and check valve are equipped with the oil outlet of subject hydraulic pump；Quilt
The leakage oil port of test solution press pump is equipped with flow sensor III.
Further, the P oil ports of three position four-way directional control valve are equipped with flow sensor II.
Further, the leakage hydraulic fluid port for being tested hydraulic motor is connected with fuel tank and is equipped with flow sensor in leakage oil port
Ⅳ。
Further, the T oil ports of three position four-way directional control valve are equipped with proportional pressure control valve, the other end and the oil of proportional pressure control valve
Case is connected, and back pressure is provided for subject hydraulic motor.
Application method of the present invention, when the test flow of subject hydraulic pump is less than the test flow of subject hydraulic motor
When, reversal valve must not be electric, controls asynchronous servomotor III to drive bidirectional hydraulic to pump by inversion unit III, and high pressure is inputted to system
Oil, system is Dual-pump flow-converging driving subject hydraulic motor at this time；When the test flow of subject hydraulic pump is more than subject hydraulic motor
Test flow when, reversal valve obtains electric, and subject hydraulic pump output high pressure oil drives subject hydraulic motor all the way, and another way driving is double
To hydraulic pump, controlled, realized by test specimen flow matches and system loads by the coordination of inversion unit II and inversion unit III
Function.
Compared with prior art, the invention has the advantages that：Formed using bidirectional hydraulic pump and asynchronous servomotor III
Auxiliary system realize subject hydraulic pump and hydraulic motor flow matches, can both meet Dual-pump flow-converging driving subject hydraulic pressure horse
Up to operating mode, and the loss of overflow power can be reduced, substantially increase the test scope and testing efficiency of reliability test.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Drawing reference numeral：1- rectification units, 2- dc bus row, 3.1- inversion units I, 3.2- inversion units II, 3.3- is inverse
Become unit III, the asynchronous servomotors I of 4.1-, the asynchronous servomotors II of 4.2-, the asynchronous servomotors III of 4.3-, 5- subject hydraulic pressure
Pump, 6.1- pressure sensors I, 6.2- pressure sensors II, 6.3- pressure sensors III, 7.1- flow sensors I, 7.2- flows
Sensor II, 7.3- flow sensors III, 7.4- flow sensors IV, 8- check valves, 9- reversal valves, 10- proportional pressure control valves,
11- three position four-way directional control valves, 12.1- temperature sensors I, 12.2- temperature sensors II, 13- subject hydraulic motors, 14- are two-way
Hydraulic pump, 15- fuel tanks.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
In structure diagram of the invention as shown in Figure 1, the invention mainly comprises rectification unit 1, dc bus row 2, inverse
Become unit I 3.1, inversion unit II 3.2, inversion unit III 3.3, asynchronous servomotor I 4.1, asynchronous servomotor II 4.2, different
Walk servomotor III 4.3, subject hydraulic pump 5, pressure sensor I 6.1, pressure sensor II 6.2, pressure sensor III 6.3, stream
Quantity sensor I 7.1, flow sensor II 7.2, flow sensor III 7.3, flow sensor IV 7.4, check valve 8, reversal valve 9,
Proportional pressure control valve 10, three position four-way directional control valve 11, temperature sensor I 12.1, temperature sensor II 12.2, subject hydraulic motor
13rd, bidirectional hydraulic pump 14, fuel tank 15, rectification unit are connected as it with dc bus row and provide stable and controllable voltage power supply；
Dc bus is arranged is connected as electric energy needed for its offer, I other end of inversion unit and asynchronous servomotor I with I one end of inversion unit
It is connected, torque is carried out to asynchronous servomotor I based on vector control technology and rotating speed controls；The output terminal of asynchronous servomotor I
Coaxially be connected with subject hydraulic pump, subject hydraulic pump inlet port is connected with fuel tank, be tested the oil outlet of hydraulic pump respectively with three
The P hydraulic fluid ports of four-way reversing valve, reversal valve one end are connected；Two actuator ports for being tested hydraulic motor commutate with 3-position 4-way respectively
Valve is connected, and pressure sensor II, temperature sensor I and pressure sensor III, temperature are respectively equipped with two actuator ports
Sensor II；It is coaxially connected to be tested hydraulic motor and asynchronous servomotor II, asynchronous servomotor II by inversion unit II and
Dc bus row is connected；The other end of reversal valve and bidirectional hydraulic pump a hydraulic fluid port and are connected, bidirectional hydraulic pump another hydraulic fluid port with
Fuel tank is connected, and bidirectional hydraulic pump is coaxially connected with asynchronous servomotor III, and asynchronous servomotor III is by inversion unit III and directly
Line bus bar connects；Reversal valve, bidirectional hydraulic pump, asynchronous servomotor III and inversion unit III form auxiliary system.
Flow sensor I, pressure sensor I and check valve are equipped with the oil outlet of subject hydraulic pump；It is tested hydraulic pump
Leakage oil port be equipped with flow sensor III.
The P oil ports of three position four-way directional control valve are equipped with flow sensor II.
The leakage hydraulic fluid port of subject hydraulic motor is connected with fuel tank and is equipped with flow sensor IV in leakage oil port.
The T oil ports of three position four-way directional control valve are equipped with proportional pressure control valve, and the other end of proportional pressure control valve is connected with fuel tank, is
It is tested hydraulic motor and back pressure is provided.
The specific work process of the present invention is as follows：
When the test flow for being tested hydraulic pump is less than the test flow of subject hydraulic motor.On-test, 2/2-way
Reversal valve is in power failure state, and three-phase alternating current is converted to direct current by rectification unit, for dc bus row's power supply；Inversion list
The direct current that dc bus is arranged is converted to alternating current by member I, is powered for asynchronous servomotor I, and asynchronous servomotor I drives quilt
Test solution press pump；The direct current that dc bus is arranged is converted to alternating current by inversion unit III, is powered for asynchronous servomotor III, different
Walk servomotor III and drive bidirectional hydraulic pump, high pressure oil is inputted to system by reversal valve；It is tested hydraulic pump and bidirectional hydraulic pump
Interflow driving subject hydraulic motor；Asynchronous II permanent torque of servomotor is controlled by inversion unit II, is realized to being tested hydraulic pressure
The effect of motor loading, and the alternating current of recycling is converted into direct current and is fed back on dc bus row.
When the test flow for being tested hydraulic pump is more than the test flow of subject hydraulic motor.On-test, 2/2-way
Reversal valve be in electricity condition, three-phase alternating current are converted to direct current by rectification unit, for dc bus row power；Inversion list
The direct current that dc bus is arranged is converted to alternating current by member I, is powered for asynchronous servomotor I, and asynchronous servomotor I drives quilt
Test solution press pump；Hydraulic pump pressure oil output is tested, subject hydraulic motor is driven by three position four-way directional control valve all the way, another way is led to
Reversal valve driving bidirectional hydraulic pump is crossed, bidirectional hydraulic pump operation is in motor operating conditions at this time；By inversion unit II to asynchronous servo
II constant speed control of motor, makes subject hydraulic motor be run with constant test rotating speed, by inversion unit III to asynchronous servo electricity
III permanent torque of machine controls, and the effect to bidirectional hydraulic pump loading is realized, so as to achieve the purpose that system pressure regulating.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, should all fall into the protection domain that claims of the present invention determines.
Claims (6)
1. a kind of electrical power reclaiming type hydraulic pump motor reliability test, mainly including rectification unit, dc bus row, inverse
Become unit I, inversion unit II, inversion unit III, asynchronous servomotor I, asynchronous servomotor II, asynchronous servomotor III, quilt
Test solution press pump, pressure sensor I, pressure sensor II, pressure sensor III, flow sensor I, flow sensor II, flow
Sensor III, flow sensor IV, check valve, bi-bit bi-pass reversal valve, proportional pressure control valve, three position four-way directional control valve, temperature pass
Sensor I, temperature sensor II, subject hydraulic motor, bidirectional hydraulic pump, fuel tank, it is characterised in that：Rectification unit and dc bus
Row is connected as it and provides stable and controllable voltage power supply；Dc bus is arranged to be connected as needed for its offer with I one end of inversion unit
Electric energy, I other end of inversion unit are connected with asynchronous servomotor I, based on vector control technology to asynchronous I turn of servomotor
Square and rotating speed control；The output terminal of asynchronous servomotor I is coaxially connected with subject hydraulic pump, is tested hydraulic pump inlet port and fuel tank
It is connected, being tested the oil outlet of hydraulic pump, the P hydraulic fluid ports with three position four-way directional control valve, bi-bit bi-pass reversal valve one end are connected respectively；Quilt
Two actuator ports of test solution pressure motor are connected with three position four-way directional control valve respectively, and one of actuator port installs pressure sensing
Device II, temperature sensor I, another actuator port installation pressure sensor III, temperature sensor II；Be tested hydraulic motor with it is asynchronous
Servomotor II is coaxially connected, and asynchronous servomotor II is connected by inversion unit II with dc bus row；Bi-bit bi-pass commutates
The other end of valve pumps a hydraulic fluid port with bidirectional hydraulic and is connected, and bidirectional hydraulic pumps another hydraulic fluid port and is connected with fuel tank, bidirectional hydraulic pump
Coaxially connected with asynchronous servomotor III, asynchronous servomotor III is connected by inversion unit III and dc bus row.
A kind of 2. electrical power reclaiming type hydraulic pump motor reliability test according to claim 1, it is characterised in that：
Flow sensor I, pressure sensor I and check valve are equipped with the oil outlet of subject hydraulic pump；It is tested the Leakage Energy of hydraulic pump
Flow sensor III is equipped with mouthful.
A kind of 3. electrical power reclaiming type hydraulic pump motor reliability test according to claim 1, it is characterised in that：
The P oil ports of three position four-way directional control valve are equipped with flow sensor II.
A kind of 4. electrical power reclaiming type hydraulic pump motor reliability test according to claim 1, it is characterised in that：
The leakage hydraulic fluid port of subject hydraulic motor is connected with fuel tank and is equipped with flow sensor IV in leakage oil port.
A kind of 5. electrical power reclaiming type hydraulic pump motor reliability test according to claim 1, it is characterised in that：
The T oil ports of three position four-way directional control valve are equipped with proportional pressure control valve, and the other end of proportional pressure control valve is connected with fuel tank, to be tested hydraulic pressure
Motor provides back pressure.
6. a kind of application method of the electrical power reclaiming type hydraulic pump motor reliability test based on claim 1, it is special
Sign is：When the test flow for being tested hydraulic pump is less than the test flow of subject hydraulic motor, bi-bit bi-pass reversal valve must not
Electricity, controls asynchronous servomotor III to drive bidirectional hydraulic to pump by inversion unit III, inputs high pressure oil to system, system is at this time
Dual-pump flow-converging driving subject hydraulic motor；When the test flow for being tested hydraulic pump is more than the test flow of subject hydraulic motor,
Bi-bit bi-pass reversal valve obtains electric, and subject hydraulic pump output high pressure oil drives subject hydraulic motor all the way, and another way drives two-way liquid
Press pump, is controlled by the coordination of inversion unit II and inversion unit III, realizes the function by test specimen flow matches and system loads.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123769.8A CN106762979B (en) | 2016-12-08 | 2016-12-08 | A kind of electrical power reclaiming type hydraulic pump motor reliability test and method |
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| CN201611123769.8A CN106762979B (en) | 2016-12-08 | 2016-12-08 | A kind of electrical power reclaiming type hydraulic pump motor reliability test and method |
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| CN106762979B true CN106762979B (en) | 2018-05-01 |
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| CN107355452A (en) * | 2017-08-21 | 2017-11-17 | 浙江海洋大学 | A kind of universal hydraulic unit performance testing device and its method of testing |
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| CN205654642U (en) * | 2016-05-18 | 2016-10-19 | 吉林大学 | Energy -saving hydraulic pump durability test platform with hydraulic pressure analog loading |
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- 2016-12-08 CN CN201611123769.8A patent/CN106762979B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193563A (en) * | 1998-12-25 | 2000-07-14 | Hitachi Constr Mach Co Ltd | Hydraulic motor testing device |
| CN202256624U (en) * | 2011-09-01 | 2012-05-30 | 上海电机系统节能工程技术研究中心有限公司 | Energy-feedback test device of three-phase asynchronous motor |
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| CN203126501U (en) * | 2013-03-05 | 2013-08-14 | 苏州大方特种车股份有限公司 | Hybrid engineering transport vehicle |
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| CN204716666U (en) * | 2015-06-04 | 2015-10-21 | 宁波恒力液压股份有限公司 | Based on oil hydraulic pump and the oil hydraulic motor durability test device of Power Recovery and parallel power-saving technology |
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