CN104454791A - Parallel-energy-saving-technology-based hydraulic device for testing durability of hydraulic pumps and overflow valves - Google Patents

Parallel-energy-saving-technology-based hydraulic device for testing durability of hydraulic pumps and overflow valves Download PDF

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Publication number
CN104454791A
CN104454791A CN201410735018.6A CN201410735018A CN104454791A CN 104454791 A CN104454791 A CN 104454791A CN 201410735018 A CN201410735018 A CN 201410735018A CN 104454791 A CN104454791 A CN 104454791A
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tested
relief valve
mouth
pressure transducer
pressure
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CN104454791B (en
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赵静一
张春辉
郭锐
张毅
威力旺
康绍鹏
孙泓源
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NINGBO HENGLI HYDRAULIC CO Ltd
Yanshan University
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NINGBO HENGLI HYDRAULIC CO Ltd
Yanshan University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for

Abstract

The invention relates to a parallel-energy-saving-technology-based hydraulic device for testing durability of hydraulic pumps and overflow valves. The hydraulic device comprises a motor, a plurality of tested hydraulic pumps, a plurality of tested overflow valves, a two-position four-way reversing valve, and various pressure, flow, temperature and rotation rate measuring devices. In the test process, the tested overflow valves are tested by pressure impact provided by the two-position four-way reversing valve; loading pressure required for the test of the reliability is provided for the tested hydraulic pumps; the durability of the hydraulic pumps and the durability of the overflow valves can be simultaneously tested at one time; the number of test samples and types of tested elements can be increased; a test device is simplified; the test efficiency is high; the test time is short; the parallel energy-saving technology is applied to the reliability test; the energy is saved; the test cost is reduced.

Description

Based on the oil hydraulic pump of parallel power-saving technology and the endurance test hydraulic pressure installation of relief valve
Technical field
The present invention relates to a kind of testing apparatus detecting oil hydraulic pump and relief valve durable ability, particularly a kind of oil hydraulic pump based on parallel power-saving technology and relief valve durability test device.
Background technique
Oil hydraulic pump is the energy conversion device in a kind of hydraulic system, it converts the mechanical energy that prime mover exports the hydraulic energy of fluid to, be transported in hydraulic system with the form of pressure and flow, oil hydraulic pump is the core parts of hydraulic system, and the life level of oil hydraulic pump directly determines durability and the usability of whole hydraulic system.Relief valve is a kind of oil liquid pressure control valve, and in hydraulic system, mainly play level pressure overflow, system unloaded and safety protection, relief valve is also hydraulic system common component, and the normal work of its life level to hydraulic system plays an important role.
Domestic about oil hydraulic pump at present, the research of relief valve durable ability is also enough not deep, test standard perfects not yet, the general reference standard JB/T6881-2006 of endurance test of oil hydraulic pump, JB/T7043-2006, and one the patent No. be that the Chinese utility model patent " a kind of oil hydraulic pump durability test device based on Power Recovery and converter technique " of ZL201320482332.9 (notification number is CN203430759U) discloses so a kind of oil hydraulic pump durability test device, comprise variable-frequency motor, oil hydraulic motor, relief valve and fuel tank, variable-frequency motor is Double shaft-extension variable-frequency motor, first shaft extension is connected with tested oil hydraulic pump by the first coupling, second shaft extension is connected with oil hydraulic motor by the second coupling, the inlet port of tested oil hydraulic pump is communicated with fuel tank, the oil outlet of tested oil hydraulic pump is communicated with the filler opening of oil hydraulic motor, the oil outlet of oil hydraulic motor is communicated with fuel tank, the filler opening of oil hydraulic motor is communicated with relief valve, relief valve is communicated with fuel tank.The general reference standard JB/T10374-2002 of relief valve endurance test.
The test loop single test number of samples that above-mentioned patent or standard recommendation use is few, needs test of many times could meet sample number requirement, low, the consuming time length of test efficiency; Oil hydraulic circuit test function is single, and each testing apparatus can only test the hydraulic element of same type; Oil hydraulic circuit inactivity reclaims and power-saving technology, wastes energy
Summary of the invention
Technical problem to be solved by this invention provides a kind of experimental liquid pressure device that also simultaneously can detect oil hydraulic pump and relief valve durability index based on parallel power-saving technology, this device can increase kind and the quantity of test sample, improve test efficiency, save test period, saving power, simplify testing apparatus, again reduce experimentation cost simultaneously.
The present invention solves the problems of the technologies described above adopted technological scheme: the endurance test hydraulic pressure installation of a kind of oil hydraulic pump based on parallel power-saving technology and relief valve, comprises tested liquid press pump, tested relief valve, and hydraulic oil pipeline; It is characterized in that: described tested liquid press pump and tested relief valve at least respectively have two, each described tested liquid press pump is worked by driven by motor; The inlet port of each tested liquid press pump is connected fuel tank separately with leakage hydraulic fluid port, and the leakage oil circuit of each tested liquid press pump is provided with temperature transducer; Separate two hydraulic circuits after the pressure oil port of each tested liquid press pump connects pressure transducer and flowmeter successively, a road is connected to the P mouth of two four-way electromagnetic reversing valves, and another road connects fuel tank through safety valve, and the electromagnet of two four-way electromagnetic reversing valves is 1DT; The A mouth of two four-way electromagnetic reversing valves connects the P mouth of at least one tested relief valve, and the B mouth of two four-way electromagnetic reversing valves connects the P mouth of at least one other tested relief valve, and the T mouth of two four-way electromagnetic reversing valves connects fuel tank; The P mouth place of each tested relief valve separately correspondence is provided with pressure transducer, the T mouth of each tested relief valve separately corresponding after flowmeter, converge at a road after connect fuel tank through guide's electromagnetic relief valve, the control port of guide's electromagnetic relief valve connects fuel tank through remote pressure regulating valve, and the electromagnet of guide's electromagnetic relief valve is 2DT.
As improvement, three hydraulic branch are separated after T mouth of tested relief valve converges at a road described in each, the wherein filler opening place of a road link variable motor, second tunnel connects accumulator, 3rd tunnel connects fuel tank through described guide's electromagnetic relief valve, and the oil outlet of variable displacement motor is connected fuel tank with leakage hydraulic fluid port; Variable displacement motor is by the first driven by motor action, and the first motor is two extension bar motor, the first shaft extension connection traffic compensated pump of the first motor, and the second shaft extension of the first motor connects described variable displacement motor; The inlet port of flow-compensated pump is directly connected fuel tank with leakage hydraulic fluid port, two described hydraulic circuits are separated after the pressure oil port of flow-compensated pump and the pressure oil port of each tested liquid press pump converge at a road, one tunnel is connected to the P mouth of described two four-way electromagnetic reversing valves, and another road connects fuel tank through described safety valve; The pressure oil port of flow-compensated pump and the filler opening of variable displacement motor are separately installed with the 13 pressure transducer and the 14 pressure transducer.By the effect of accumulator, variable displacement motor, flow-compensated pump, the first motor, flow-compensated pump is made to do flow-compensated for each relief valve, make up the defect of the deficiency of each tested liquid press pump flow, accumulator absorption pressure is pulsed, make variable displacement motor smooth operation, variable displacement motor as Power Recovery device for the first motor provides power
Drive the motor of each described tested hydraulic pump works to be second motor, the second motor connects transfer case by moment of torsion rotational speed meters, and transfer case drives each tested liquid press pump respectively.Adopt a motor to drive each tested hydraulic pump works simultaneously, reduce costs the conformity that simultaneously can ensure tested hydraulic pump works.
According to the needs of data capture sample, four are had as preferred above-mentioned tested liquid press pump, be respectively the first tested liquid press pump, second tested liquid press pump, 3rd tested liquid press pump and the 4th tested liquid press pump, the temperature transducer be arranged on the leakage oil circuit of tested liquid press pump has four, be respectively the first temperature transducer, second temperature transducer, three-temperature sensor and the 4th temperature transducer, be arranged on pressure transducer in the pressure oil port of tested liquid press pump and flowmeter respectively has four, be respectively the first pressure transducer, second pressure transducer, 3rd pressure transducer and the 4th pressure transducer, and first-class gauge, second gauge, 3rd flowmeter and the 4th flowmeter.
According to the needs of data capture sample, there are eight as preferred above-mentioned tested relief valve, are respectively the first tested relief valve, second tested relief valve, 3rd tested relief valve, 4th tested relief valve, 5th tested relief valve, 6th tested relief valve, 7th tested relief valve and the 8th tested relief valve, wherein the A mouth of two four-way electromagnetic reversing valves connects the first tested relief valve respectively, second tested relief valve, the P mouth of the 3rd tested relief valve and the 4th tested relief valve, the B mouth of two four-way electromagnetic reversing valves connects the 5th tested relief valve respectively, 6th tested relief valve, the P mouth of the 7th tested relief valve and the 8th tested relief valve, is arranged on pressure transducer on each tested relief valve and flowmeter is respectively the 5th pressure transducer, 6th pressure transducer, 7th pressure transducer, 8th pressure transducer, 9th pressure transducer, tenth pressure transducer, 11 pressure transducer and the 12 pressure transducer, and the 5th flowmeter, 6th flowmeter, 7th flowmeter, 8th flowmeter, 9th flowmeter, tenth flowmeter, tenth flow meters and the 12 flowmeter.
Compared with prior art, the invention has the advantages that:
1, each tested relief valve is while the compression shock test provided by two four-way electromagnetic reversing valves, for each tested liquid press pump provides the on-load pressure needed for reliability testing, single test can carry out endurance test to multiple stage oil hydraulic pump and multiple relief valve simultaneously, add test sample number and detected element type, simplify testing apparatus, test efficiency is high, consuming time short;
2, the parallel power-saving technology of application in reliability trial, energy saving, reduces experimentation cost;
3, oil hydraulic pump and relief valve endurance test parameter all use sensor and flowmeter Real-Time Monitoring, can make accurate judgement, and make accurate analysis to failure cause to the current state of detected element;
4, testing apparatus adopts electrical control, and automaticity is high, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Figure 1, be a preferred embodiment of the present invention.
Based on the oil hydraulic pump of parallel power-saving technology and an endurance test hydraulic pressure installation for relief valve, comprise tested liquid press pump, tested relief valve, and hydraulic oil pipeline.
Tested liquid press pump has four, is respectively the first tested liquid press pump 36, second tested liquid press pump 40, the 3rd tested liquid press pump 44 and the 4th tested liquid press pump 48.
Tested relief valve has eight, be respectively the tested relief valve 5 of the first tested relief valve 2, second, the 3rd tested relief valve 8, the 4th tested relief valve 11, the 5th tested relief valve 14, the 6th tested relief valve 17, the 7th tested relief valve 21 and the 8th tested relief valve 24
Each tested liquid press pump 36,40,44,48 is worked by driven by motor, the motor driving each tested liquid press pump 36,40,44,48 to work is second motor 52, second motor 52 connects transfer case 50 by moment of torsion rotational speed meters 51, and transfer case 50 drives each tested liquid press pump 36,40,44,48 respectively.
The inlet port of each tested liquid press pump 36,40,44,48 is connected fuel tank separately with leakage hydraulic fluid port, and the leakage oil circuit of each tested liquid press pump 36,40,44,48 is provided with temperature transducer 37,41,45,49, temperature transducer has four, is respectively the first temperature transducer 37, second temperature transducer 41, three-temperature sensor 45 and the 4th temperature transducer 49.
Two hydraulic circuits are separated after the pressure oil port of each tested liquid press pump 36,40,44,48 connects pressure transducer 34,38,42,46 and flowmeter 35,39,43,47 successively, one tunnel is connected to the P mouth of two four-way electromagnetic reversing valves 53, another road connects fuel tank through safety valve 33, and the electromagnet of two four-way electromagnetic reversing valves 53 is 1DT.Pressure transducer 34,38,42,46 and flowmeter 35,39,43,47 respectively have four, be respectively the first pressure transducer 34, second pressure transducer 38, the 3rd pressure transducer 42 and the 4th pressure transducer 46, and first-class gauge 35, second gauge 39, the 3rd flowmeter 43 and the 4th flowmeter 47.
The A mouth of two four-way electromagnetic reversing valves 53 connects the P mouth of the tested relief valve 5 of the first tested relief valve 2, second, the 3rd tested relief valve 8 and the 4th tested relief valve 11 respectively, the P mouth of the B mouth of two four-way electromagnetic reversing valves 53 tested relief valve 14 of connection the 5th, the 6th tested relief valve 17, the 7th tested relief valve 21 and the 8th tested relief valve 24 respectively, the T mouth of two four-way electromagnetic reversing valves 53 connects fuel tank.
The P mouth place of each tested relief valve 2,5,8,11,14,17,20,23 separately correspondence is provided with a pressure transducer, totally eight, be respectively the 5th pressure transducer 1, the 6th pressure transducer 4, the 7th pressure transducer 7, the 8th pressure transducer 10, the 9th pressure transducer 13, the tenth pressure transducer the 16, the 11 pressure transducer the 19 and the 12 pressure transducer 22; The T mouth of each tested relief valve 2,5,8,11,14,17,20,23 separately corresponding after a flowmeter, converge at a road after connect fuel tank through guide's electromagnetic relief valve 29, totally eight, flowmeter, is respectively the 5th flowmeter 3, the 6th flowmeter 6, the 7th flowmeter 9, the 8th flowmeter 12, the 9th flowmeter 15, the tenth flowmeter 18, the tenth flow meters the 21 and the 12 flowmeter 24.The control port of guide's electromagnetic relief valve 29 connects fuel tank through remote pressure regulating valve 28, and the electromagnet of guide's electromagnetic relief valve 29 is 2DT.
Three hydraulic branch are separated after the T mouth of each tested relief valve 2,5,8,11,14,17,20,23 converges at a road, the wherein filler opening place of a road link variable motor 30, second tunnel connects accumulator 25,3rd tunnel connects fuel tank through guide's electromagnetic relief valve 29, and the oil outlet of variable displacement motor 30 is connected fuel tank with leakage hydraulic fluid port; Variable displacement motor 30 is by the first motor 31 sweeping action, and the first motor 31 is two extension bar motor, the second shaft extension link variable motor 30 of the first shaft extension connection traffic compensated pump 32, first motor 31 of the first motor 31; The inlet port of flow-compensated pump 32 is directly connected fuel tank with leakage hydraulic fluid port, two described hydraulic circuits are separated after the pressure oil port of flow-compensated pump 32 and the pressure oil port of each tested liquid press pump 36,40,44,48 converge at a road, one tunnel is connected to the P mouth of two four-way electromagnetic reversing valves 53, and another road connects fuel tank through safety valve 33; The pressure oil port of flow-compensated pump 32 and the filler opening of variable displacement motor 30 are separately installed with the 13 pressure transducer the 26 and the 14 pressure transducer 27.
Testing apparatus of the present invention carries out the endurance test of oil hydraulic pump and relief valve, carries out according to the following steps:
The first step, tested liquid press pump 36,40,44,48 and tested relief valve 2,5,8,11,14,17,20,23 install laggard row no-load test, that is:
1), 1DT dead electricity, two position and four-way reversing valves 53 are in right position state; 2DT dead electricity, remote pressure regulating valve 28 off-load, variable displacement motor 30 is in unloaded state; First tested relief valve 2 is set to 0MPa to the set pressure of the 8th tested relief valve 23.
2), the first motor 31, second motor 52 is run by rated speed, moment of torsion rotational speed meters 51 monitors the rotating speed of the second motor 52, guarantees that it operates by rated speed.
3), the flow of record now first-class gauge 35, second gauge 39, the 3rd flowmeter 43, the 4th flowmeter 47, be namely respectively the no load discharge of the first tested liquid press pump 36, second tested liquid press pump 40, the 3rd tested liquid press pump 44, the 4th tested liquid press pump 48.
Second step, carries out load test after no-load test terminates, and Real-time Collection test data, that is:
1), the first tested relief valve 2 all sets up to test pressure to the 8th tested relief valve 23,1DT according to electric 1 second, the dead electricity frequency of 1 second obtains dead electricity makes two position and four-way reversing valves 53 do commutation action;
2), the flow of adjust flux compensated pump 32, make the total discharge of 4 tested liquid press pumps 36,40,44,48 and flow-compensated pump 32 be 8 tested relief valve 2,5,8,11,14,17,20,23 peak rate of flow and 3 times.When system malfunctions, safety valve 33 ensures that 5 pumps can run well.2DT obtains electric, regulates remote pressure regulating valve 28 thus the loading of controlled variable motor 30, the rotating speed of variable displacement motor 30 and output torque are mated with the first motor 31, thus drives the first motor 31 to operate, and completes Power Recovery.The pressure pulsation absorbing fluid is responsible for by accumulator 25, makes motor running steady.
When two position and four-way reversing valves 53 are in left position or right position, all have 4 tested relief valves to be on the pressure oil circuit of tested liquid press pump, complete the loading to pump, the set pressure that namely tested relief valve is higher makes pump complete accelerated stress testing.8 tested relief valves are divided into two groups, and at the circulating picture-changing of two position and four-way reversing valves 53 under action, the action made unlatching by the cycle, close, completes impact life testing.
Now, the first pressure transducer 34, first-class gauge 35, first temperature transducer 37 monitor the delivery pressure of the first tested liquid press pump 36, Leakage Energy liquid temp and output flow respectively; Second pressure transducer 38, second gauge 39, second temperature transducer 41 monitor the delivery pressure of the second tested liquid press pump 40, Leakage Energy liquid temp and output flow respectively; 3rd pressure transducer 42, the 3rd flowmeter 43, three-temperature sensor 45 monitor the delivery pressure of the 3rd tested liquid press pump 44, Leakage Energy liquid temp and output flow respectively; 4th pressure transducer 46, the 4th flowmeter 47, the 4th temperature transducer 49 monitor the delivery pressure of the 4th tested liquid press pump 48, Leakage Energy liquid temp and output flow respectively.
5th pressure transducer 1, the 5th flowmeter 3 monitor P mouth pressure and the T mouth flow of the first tested relief valve 2 respectively; 6th pressure transducer 4, the 6th flowmeter 6 monitor P mouth pressure and the T mouth flow of the second tested relief valve 5 respectively; 7th pressure transducer 7, the 7th flowmeter 9 monitor P mouth pressure and the T mouth flow of the 3rd tested relief valve 8 respectively; 8th pressure transducer 10, the 8th flowmeter 12 monitor P mouth pressure and the T mouth flow of the 4th tested relief valve 11 respectively; 9th pressure transducer 13, the 9th flowmeter 15 monitor P mouth pressure and the T mouth flow of the 5th tested relief valve 14 respectively; Tenth pressure transducer 16, the tenth flowmeter 18 monitor P mouth pressure and the T mouth flow of the 6th tested relief valve 17 respectively; 11 pressure transducer 19, the tenth flow meters 21 monitor P mouth pressure and the T mouth flow of the 7th tested relief valve 20 respectively; 12 pressure transducer the 22, the 12 flowmeter 24 monitors P mouth pressure and the T mouth flow of the 8th tested relief valve 23 respectively.
The outlet pressure of flow compensated pump 32 monitored by 13 pressure transducer 26, the inlet pressure of the 14 pressure transducer 27 monitored parameters motor 30.
3rd step, to the load test data analysis that second step gathers, real-time monitor for faults, that is:
(1) according to the formula of oil hydraulic pump volumetric efficiency, the volumetric efficiency of Real-Time Monitoring 4 tested liquid press pumps.When the volumetric efficiency of certain tested liquid press pump drop to regulation stale value or leak fluid long time overheating time, replace this oil hydraulic pump with new sample, and record its working time.
(2) cracking pressure of Real-Time Monitoring 8 tested relief valves.Because the circulating picture-changing of two position and four-way reversing valves 53 is to action, the pressure data of tested relief valve P mouth place pressure transducer record and the data on flows of its T mouth place cmf record are periodic data, and pressure data in each cycle is corresponding with data on flows.By the pressure versus flow data RT rael time to the same tested valve of synchronization, monitor the state of this valve.When tested relief valve performance index reach stale value, replace this relief valve with new sample, and record its working time.
4th step, carries out statistical process to the Monitoring Data of the 3rd step gained, draws the characteristic of durability of tested liquid press pump and tested relief valve.
Although more than describe in detail the preferred embodiments of the present invention, should be expressly understood that, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1., based on the oil hydraulic pump of parallel power-saving technology and an endurance test hydraulic pressure installation for relief valve, comprise tested liquid press pump, tested relief valve, and hydraulic oil pipeline, it is characterized in that: described tested liquid press pump (36,40,44,48) and tested relief valve (2,5,8,11,14,17,20,23) at least respectively have two, each described tested liquid press pump 36,40,44,48) worked by driven by motor, the inlet port of each tested liquid press pump (36,40,44,48) is connected fuel tank separately with leakage hydraulic fluid port, and the leakage oil circuit of each tested liquid press pump (36,40,44,48) is provided with temperature transducer (37,41,45,49), two hydraulic circuits are separated after the pressure oil port of each tested liquid press pump (36,40,44,48) connects pressure transducer (34,38,42,46) and flowmeter (35,39,43,47) successively, one tunnel is connected to the P mouth of two four-way electromagnetic reversing valves (53), another road connects fuel tank through safety valve (33), and the electromagnet of two four-way electromagnetic reversing valves (53) is 1DT, the A mouth of two four-way electromagnetic reversing valves (53) connects the P mouth of at least one tested relief valve (2,5,8,11,14,17,20,23), the B mouth of two four-way electromagnetic reversing valves (53) connects the P mouth of at least one other tested relief valve (2,5,8,11,14,17,20,23), and the T mouth of two four-way electromagnetic reversing valves (53) connects fuel tank, each tested relief valve (2, 5, 8, 11, 14, 17, 20, 23) P mouth place separately correspondence is provided with pressure transducer (1, 4, 7, 10, 13, 16, 19, 22), each tested relief valve (2, 5, 8, 11, 14, 17, 20, 23) T mouth is corresponding to flowmeter (3 separately, 6, 9, 12, 15, 18, 21, 24) fuel tank is connected through guide's electromagnetic relief valve (29) after converging at a road after, the control port of guide's electromagnetic relief valve (29) connects fuel tank through remote pressure regulating valve (28), the electromagnet of guide's electromagnetic relief valve (29) is 2DT.
2. endurance test hydraulic pressure installation according to claim 1, it is characterized in that: after the T mouth of tested relief valve described in each (2,5,8,11,14,17,20,23) converges at a road, separate three hydraulic branch, the wherein filler opening place on road link variable motor (30), second tunnel connects accumulator (25), 3rd tunnel connects fuel tank through described guide's electromagnetic relief valve (29), and the oil outlet of variable displacement motor (30) is connected fuel tank with leakage hydraulic fluid port; Variable displacement motor (30) is by the first motor (31) sweeping action, first motor (31) is two extension bar motor, first shaft extension connection traffic compensated pump (32) of the first motor (31), the second shaft extension of the first motor (31) connects described variable displacement motor (30); The inlet port of flow-compensated pump (32) is directly connected fuel tank with leakage hydraulic fluid port, two described hydraulic circuits are separated after the pressure oil port of flow-compensated pump (32) and the pressure oil port of each tested liquid press pump (36,40,44,48) converge at a road, one tunnel is connected to the P mouth of described two four-way electromagnetic reversing valves (53), and another road connects fuel tank through described safety valve (33); The pressure oil port of flow-compensated pump (32) and the filler opening of variable displacement motor (30) are separately installed with the 13 pressure transducer (26) and the 14 pressure transducer (27).
3. endurance test hydraulic pressure installation according to claim 1, it is characterized in that: drive the motor of each described tested hydraulic pump works to be second motor (52), second motor (52) connects transfer case (50) by moment of torsion rotational speed meters (51), and transfer case (50) drives each tested liquid press pump (36,40,44,48) respectively.
4. endurance test hydraulic pressure installation according to claim 1, it is characterized in that: described tested liquid press pump has four, be respectively the first tested liquid press pump (36), second tested liquid press pump (40), 3rd tested liquid press pump (44) and the 4th tested liquid press pump (48), the temperature transducer be arranged on the leakage oil circuit of tested liquid press pump has four, be respectively the first temperature transducer (37), second temperature transducer (41), three-temperature sensor (45) and the 4th temperature transducer (49), be arranged on pressure transducer in the pressure oil port of tested liquid press pump and flowmeter respectively has four, be respectively the first pressure transducer (34), second pressure transducer (38), 3rd pressure transducer (42) and the 4th pressure transducer (46), and first-class gauge (35), second gauge (39), 3rd flowmeter (43) and the 4th flowmeter (47).
5. endurance test hydraulic pressure installation according to claim 1, is characterized in that: described tested relief valve has eight, is respectively the first tested relief valve (2), second tested relief valve (5), 3rd tested relief valve (8), 4th tested relief valve (11), 5th tested relief valve (14), 6th tested relief valve (17), 7th tested relief valve (21) and the 8th tested relief valve (24), wherein the A mouth of two four-way electromagnetic reversing valves (53) connects the first tested relief valve (2) respectively, second tested relief valve (5), the P mouth of the 3rd tested relief valve (8) and the 4th tested relief valve (11), the B mouth of two four-way electromagnetic reversing valves (53) connects the 5th tested relief valve (14) respectively, 6th tested relief valve (17), the P mouth of the 7th tested relief valve (21) and the 8th tested relief valve (24), is arranged on pressure transducer on each tested relief valve and flowmeter is respectively the 5th pressure transducer (1), 6th pressure transducer (4), 7th pressure transducer (7), 8th pressure transducer (10), 9th pressure transducer (13), tenth pressure transducer (16), 11 pressure transducer (19) and the 12 pressure transducer (22), and the 5th flowmeter (3), 6th flowmeter (6), 7th flowmeter (9), 8th flowmeter (12), 9th flowmeter (15), tenth flowmeter (18), tenth flow meters (21) and the 12 flowmeter (24).
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109854493A (en) * 2018-11-11 2019-06-07 中北大学 A kind of hydraulic-fuel oil double loop multifunctional testing equipment
CN111322235A (en) * 2020-03-23 2020-06-23 邢台职业技术学院 Hydraulic pump reliability test device and method with pollutants as acceleration stress
CN112112865A (en) * 2020-09-02 2020-12-22 山东大学 Flow adjusting device and method in overflow valve test
CN112343891A (en) * 2020-10-14 2021-02-09 燕山大学 Parallel test device and method for testing reliability of hydraulic pump and hydraulic reversing valve
WO2021186808A1 (en) * 2020-03-17 2021-09-23 住友精密工業株式会社 Eha system for lifting/lowering landing gear
RU207544U1 (en) * 2020-12-21 2021-11-01 Общество С Ограниченной Ответственностью "Газпром Добыча Надым" HYDRAULIC TEST STAND

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842128A1 (en) * 1978-09-28 1980-04-10 Massey Ferguson Hanomag Inc & Test bed for hydraulic pump - has discharge pressure varied cyclically by changeover valves controlled by timer through relays
RU2011038C1 (en) * 1991-04-08 1994-04-15 Першин Виктор Алексеевич Bench for testing members of hydraulic drive
CN102052365A (en) * 2010-12-07 2011-05-11 三一重机有限公司 Test bench for hydraulic excavator pump valve
CN103511396A (en) * 2013-09-03 2014-01-15 燕山大学 Hydraulic pump and hydraulic motor reliability testing device based on power recovery technology
CN103775436A (en) * 2014-01-21 2014-05-07 燕山大学 Modularly-parallel, multi-machine and energy-saving reliability testing device for hydraulic pumps and hydraulic motors
KR20140081063A (en) * 2012-12-21 2014-07-01 주식회사 두산 Valve performance tester
CN204312460U (en) * 2014-12-05 2015-05-06 宁波恒力液压股份有限公司 Based on the oil hydraulic pump of parallel power-saving technology and the endurance test hydraulic pressure installation of relief valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842128A1 (en) * 1978-09-28 1980-04-10 Massey Ferguson Hanomag Inc & Test bed for hydraulic pump - has discharge pressure varied cyclically by changeover valves controlled by timer through relays
RU2011038C1 (en) * 1991-04-08 1994-04-15 Першин Виктор Алексеевич Bench for testing members of hydraulic drive
CN102052365A (en) * 2010-12-07 2011-05-11 三一重机有限公司 Test bench for hydraulic excavator pump valve
KR20140081063A (en) * 2012-12-21 2014-07-01 주식회사 두산 Valve performance tester
CN103511396A (en) * 2013-09-03 2014-01-15 燕山大学 Hydraulic pump and hydraulic motor reliability testing device based on power recovery technology
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CN204312460U (en) * 2014-12-05 2015-05-06 宁波恒力液压股份有限公司 Based on the oil hydraulic pump of parallel power-saving technology and the endurance test hydraulic pressure installation of relief valve

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