CN104776086A - Remanufactured oil cylinder performance detection platform - Google Patents
Remanufactured oil cylinder performance detection platform Download PDFInfo
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- CN104776086A CN104776086A CN201510150840.0A CN201510150840A CN104776086A CN 104776086 A CN104776086 A CN 104776086A CN 201510150840 A CN201510150840 A CN 201510150840A CN 104776086 A CN104776086 A CN 104776086A
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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
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Abstract
The invention discloses a remanufactured oil cylinder performance detection platform, which comprises a tested loop, a loading loop and a pilot control loop. During a starting test, oil in a rod cavity of a tested oil cylinder directly returns an oil tank, a small-range overflow valve is gradually adjusted, and the minimum starting pressure of a rodless cavity is accurately acquired by small-range pressure sensors; during an internal leakage test, high-pressure ball valves at oil ports of the remanufactured oil cylinder are closed, the tested oil cylinder is locked at a specified position (a remanufacturing repair part), and internal leakage is measured; during a load efficiency test, passive loading overflow valves are adopted for passive loading, and parts such as a loading pump, loading overflow valves and a loading reversing valve are protected; during a working condition simulation test, liquid control check valves and the loading reserving valve are controlled, and the loading pump is directly controlled by the loading overflow valves to actively load the tested oil cylinder. According to the remanufactured oil cylinder performance detection platform, the problems of performance detection of a high-pressure large-flow remanufactured oil cylinder are effectively solved, and in addition, the working condition simulation test can further be implemented.
Description
Technical field
The present invention relates to a kind of oil cylinder performance detecting platform, particularly relate to one and manufacture oil cylinder performance detecting platform again.
Background technique
By the end of the end of the year 2014, China Construction Machinery stock value will be more than 10,000 hundred million yuan, and about 25% construction machinery product life time is more than 10 years simultaneously, faces and scraps, and will cause huge resource, energy waste.The general character parts that oil cylinder is high as added value in engineering machinery, have a large capacity and a wide range, manufacture processing again to it and will save a large amount of resources.Be adopt the parts and components scrapped to make blank owing to manufacturing oil cylinder again, it has the performance and life-span Evolution that are different from new product, in order to ensure the service safety manufacturing oil cylinder again, is necessary to manufacture oil cylinder Performance Detection again.
Current still do not have the special test platform for manufacturing oil cylinder again and carry out Performance Detection, and there are the following problems for common oil cylinder test bed: the minimum pressure of pump relief valve is too high, cannot complete the starting test of oil cylinder; Load cylinder initiatively cannot load the tested oil cylinder that manufactures again; The tested leakage manufacturing oil cylinder specified position again cannot be measured, the Work condition analogue test of oil cylinder cannot be manufactured again.
Summary of the invention
In order to overcome the deficiencies in the prior art, according to the relevant regulations of GB/T 15622-2005 " oil hydraulic cylinder test method " and JB/T 10205-2010 " oil hydraulic cylinder ", the object of the present invention is to provide one to manufacture oil cylinder performance detecting platform again, completing the Performance Detection to manufacturing oil cylinder again.
The technical solution used in the present invention is:
The present invention includes tested loop, load loop and pilot control loop; Wherein:
Tested loop comprises: tested variable-frequency motor, tested metering pump, tested high pressure filter, tested proportional pressure control valve, tested one-way valve, M type meta electro-hydraulic reversing valve, flowmeter, six high-pressure ball valves, two tested one-way throttle valves, small-range relief valve, equilibrium valve, two pressure meter switches, two small-range pressure transducers, two wide range pressure transducers and return filter, in tested loop, tested variable-frequency motor drives tested metering pump, the inlet port of tested metering pump is connected with fuel tank, oil outlet is connected with tested high pressure filter, one, tested high pressure filter outlet port branch is through tested proportional pressure control valve connected tank, another branch to hold with the P of M type meta electro-hydraulic reversing valve through tested one-way valve and is connected, the T end of M type meta electro-hydraulic reversing valve is through flowmeter and return filter connected tank, the A end of M type meta electro-hydraulic reversing valve is through the first tested one-way throttle valve, 7th high-pressure ball valve is connected with the tested rod chamber manufacturing oil cylinder again, the B end of M type meta electro-hydraulic reversing valve is through the first high-pressure ball valve, second tested one-way throttle valve, second high-pressure ball valve, 8th high-pressure ball valve is connected with the tested rodless cavity manufacturing oil cylinder again, the 6th high-pressure ball valve is connected between the second tested one-way throttle valve and the second high-pressure ball valve, 6th high-pressure ball valve is through small-range relief valve connected tank, the 5th high-pressure ball valve is connected between the first tested one-way throttle valve and the 7th high-pressure ball valve, 5th high-pressure ball valve connected tank, between the B end and the first high-pressure ball valve of M type meta electro-hydraulic reversing valve, be connected on the A end of equilibrium valve through third high pressure ball valve, the B end of equilibrium valve is connected between the second high-pressure ball valve and the 8th high-pressure ball valve through the 4th high-pressure ball valve,
Loading loop comprises: loading motor, loading variable pump, loads high pressure filter, load proportional pressure control valve, load one-way valve, P type meta electro-hydraulic reversing valve, two loading one-way throttle valves, two Pilot operated check valves, two passive loading one-way valves and two passive loading relief valves, in loading loop, loading motor drive load variable displacement pump, the inlet port of loading variable pump is connected with fuel tank, oil outlet is connected with loading high pressure filter, load one, high pressure filter outlet port branch through loading proportional pressure control valve connected tank, another branch to hold with the P of P type meta electro-hydraulic reversing valve be connected through loading one-way valve, the T termination fuel tank of P type meta electro-hydraulic reversing valve, the A end of P type meta electro-hydraulic reversing valve loads one-way throttle valve through first, first Pilot operated check valve is connected with the rodless cavity loading cylinder, the B end of P type meta electro-hydraulic reversing valve loads one-way throttle valve through second, second Pilot operated check valve is connected with the rod chamber loading cylinder,
Pilot control loop comprises: control motor, control pump, controls high pressure filter, controlling water kick valve, controls one-way valve, five high-pressure stop valves, reduction valve, and pressure transducer, in guide's control loop, control drive and control of electric machine pump, the inlet port of control pump is connected with fuel tank, oil outlet is connected with control high pressure filter, control one, high pressure filter outlet port branch through controlling water kick valve connected tank, another branch connects the entrance point controlling one-way valve, the outlet end controlling one-way valve is connected with one end of five high-pressure ball valves respectively, the other end of the first high-pressure stop valve connects the control port of P type meta electro-hydraulic reversing valve, the other end of the second high-pressure stop valve connects the control port of the first Pilot operated check valve, the other end of third high pressure cutoff valve connects the control port of the second Pilot operated check valve, the other end of the 4th high-pressure stop valve distinguishes the control port of Bonding pressure sensor and equilibrium valve through reduction valve, the other end of the 5th high-pressure stop valve connects the control port of M type meta electro-hydraulic reversing valve.
Described 7th high-pressure ball valve is connected to a wide range pressure transducer near tested one end manufacturing oil cylinder again, and the other end of the 7th high-pressure ball valve connects a small-range pressure transducer through the first pressure meter switch.
Described 8th high-pressure ball valve is connected to another wide range pressure transducer near tested one end manufacturing oil cylinder again, and the other end of the 8th high-pressure ball valve connects another small-range pressure transducer through another pressure meter switch.
The oil outlet end of described first Pilot operated check valve is through the 9th high-pressure ball valve, the first passive loading one-way valve and the first passive loading relief valve connected tank.
The oil outlet end of described second Pilot operated check valve is through the tenth high-pressure ball valve, the second passive loading one-way valve and the second passive loading relief valve connected tank.
The beneficial effect that the present invention has is:
1, during starting test, employing small-range relief valve coordinates with small-range pressure transducer, effectively overcome the minimum set pressure of pump discharge relief valve (certain flow underflow stream valve standard-sized sheet, pump the pressure of hydraulic fluid port) limitation, manufacture the direct connected tank of cylinder rod chamber again by tested simultaneously, reduce the impact of return oil pressure, ensure the accuracy measuring the minimum starting pressure manufacturing oil cylinder again.
2, load cylinder can realize initiatively loading the switching with passive loading: when initiatively loading, and load pump is fuel feeding initiatively, by the pressure loading relief valve controlled loading cylinder, for the tested oil cylinder that manufactures again provides positive load and negative load; During passive loading, load pump repairing, by the pressure of passive loading relief valve control cylinder, effectively protects load pump, loads the components and parts such as proportional pressure control valve, P type meta electro-hydraulic reversing valve; Freely switching of two kinds of modes, can energy saving effectively.
3, by the high-pressure ball valve of tested cylinder oil port can to manufacture oil cylinder more at an arbitrary position locked by tested, can measure easily and manufacture oil cylinder again and to wear and tear the leakage rate.
Accompanying drawing explanation
Fig. 1 is that the present invention manufactures oil cylinder performance detecting platform systematic schematic diagram again.
In figure: 1, tested variable-frequency motor, 2, tested metering pump, 3, tested high pressure filter, 4, tested proportional pressure control valve, 5, tested one-way valve, 6, M type meta electro-hydraulic reversing valve, 7, flowmeter, 8-1 ~ 8-10, ten high-pressure ball valves, 9-1, 9-2, two tested one-way throttle valves, 10, small-range relief valve, 11, loading motor, 12, loading variable pump, 13, load high pressure filter, 14, load proportional pressure control valve, 15, load one-way valve, 16, P type meta electro-hydraulic reversing valve, 17-1, 17-2, two loading one-way throttle valves, 18-1, 18-2 two Pilot operated check valves, 19-1, 19-2, two passive loading one-way valves, 20-1, 20-2, two passive loading relief valves, 21, control motor, 22, control pump, 23, control high pressure filter, 24, controlling water kick valve, 25, control one-way valve, 26, five high-pressure stop valves, 27, reduction valve, 28, equilibrium valve, 29, pressure transducer, 30-1, 30-2, two pressure meter switches, 31-1, 31-2 two small-range pressure transducers, 32-1, 32-2, two wide range pressure transducers, 33, testedly manufacture oil cylinder again, 34, load cylinder, 35, bindiny mechanism, 36, return filter, 37, fuel tank.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, the present invention includes tested loop, load loop and pilot control loop; Wherein:
Tested loop comprises: tested variable-frequency motor 1, tested metering pump 2, tested high pressure filter 3, tested proportional pressure control valve 4, tested one-way valve 5, M type meta electro-hydraulic reversing valve 6, flowmeter 7, six high-pressure ball valves 8-1,8-2,8-5,8-6,8-7,8-8, two tested one-way throttle valve 9-1,9-2, small-range relief valve 10, equilibrium valve 28, two pressure meter switches 30-1,30-2, two small-range pressure transducers 31-1,31-2, two wide range pressure transducer 32-1,32-2 and return filter 36, in tested loop, tested variable-frequency motor 1 drives tested metering pump 2, the inlet port of tested metering pump 2 is connected with fuel tank 37, oil outlet is connected with tested high pressure filter 3, tested branch in high pressure filter 3 outlet port is through tested proportional pressure control valve 4 connected tank 37, another branch to hold with the P of M type meta electro-hydraulic reversing valve 6 through tested one-way valve 5 and is connected, the T end of M type meta electro-hydraulic reversing valve 6 is through flowmeter 7 and return filter 36 connected tank 37, the A end of M type meta electro-hydraulic reversing valve 6 is through the first tested one-way throttle valve 9-1, 7th high-pressure ball valve 8-7 is connected with the tested rod chamber manufacturing oil cylinder 33 again, the B end of M type meta electro-hydraulic reversing valve 6 is through the first high-pressure ball valve 8-1, second tested one-way throttle valve 9-2, second high-pressure ball valve 8-2, 8th high-pressure ball valve 8-8 is connected with the tested rodless cavity manufacturing oil cylinder 33 again, the 6th high-pressure ball valve 8-6 is connected between the second tested one-way throttle valve 9-2 and the second high-pressure ball valve 8-2, 6th high-pressure ball valve 8-6 is through small-range relief valve 10 connected tank, the 5th high-pressure ball valve 8-5 is connected between the first tested one-way throttle valve 9-1 and the 7th high-pressure ball valve 8-7, 5th high-pressure ball valve 8-5 connected tank, between the B end and the first high-pressure ball valve 8-1 of M type meta electro-hydraulic reversing valve 6, be connected on the A end of equilibrium valve 28 through third high pressure ball valve 8-3, the B end of equilibrium valve 28 is connected between the second high-pressure ball valve 8-2 and the 8th high-pressure ball valve 8-8 through the 4th high-pressure ball valve 8-4.
Loading loop comprises: loading motor 11, loading variable pump 12, load high pressure filter 13, load proportional pressure control valve 14, load one-way valve 15, P type meta electro-hydraulic reversing valve 16, two loading one-way throttle valves 17-1,17-2, two Pilot operated check valves 18-1,18-2, two passive loading one-way valve 19-1,19-2 and two passive loading relief valve 20-1,20-2, in loading loop, loading motor 11 drive load variable displacement pump 12, the inlet port of loading variable pump 12 is connected with fuel tank 37, oil outlet is connected with loading high pressure filter 13, load one, high pressure filter 13 outlet port branch through loading proportional pressure control valve 14 connected tank 37, another branch to hold with the P of P type meta electro-hydraulic reversing valve 16 be connected through loading one-way valve 15, the T termination fuel tank of P type meta electro-hydraulic reversing valve 16, the A end of P type meta electro-hydraulic reversing valve 16 loads one-way throttle valve 17-1 through first, first Pilot operated check valve 18-1 is connected with the rodless cavity loading cylinder 34, the B end of P type meta electro-hydraulic reversing valve 16 loads one-way throttle valve 17-2 through second, second Pilot operated check valve 18-2 is connected with the rod chamber loading cylinder 34.
Pilot control loop comprises: control motor 21, control pump 22, controls high pressure filter 23, controlling water kick valve 24, controls one-way valve 25, five high-pressure stop valves 26-1,26-2,26-3,26-4,26-5, reduction valve 27 and pressure transducer 29, in guide's control loop, control motor 21 drived control pump 22, the inlet port of control pump 22 is connected with fuel tank 37, oil outlet is connected with control high pressure filter 23, control one, high pressure filter 23 outlet port branch through controlling water kick valve 24 connected tank 37, another branch connects the entrance point controlling one-way valve 25, the outlet end controlling one-way valve 25 is connected with one end of five high-pressure ball valves respectively, the other end of the first high-pressure stop valve 26-1 connects the control port of P type meta electro-hydraulic reversing valve 16, the other end of the second high-pressure stop valve 26-2 connects the control port of the first Pilot operated check valve 18-1, the other end of third high pressure cutoff valve 26-3 connects the control port of the second Pilot operated check valve 18-2, the other end of the 4th high-pressure stop valve 26-4 distinguishes the control port of Bonding pressure sensor 29 and equilibrium valve 28 through reduction valve 27, the other end of the 5th high-pressure stop valve 26-5 connects the control port of M type meta electro-hydraulic reversing valve 6.
Described 7th high-pressure ball valve 8-7 is connected to a wide range pressure transducer 32-1 near tested one end manufacturing oil cylinder 33 again, and the other end of the 7th high-pressure ball valve 8-7 meets a small-range pressure transducer 31-1 through the first pressure meter switch 30-1.
Described 8th high-pressure ball valve 8-8 is connected to another wide range pressure transducer 32-2 near tested one end manufacturing oil cylinder 33 again, and the other end of the 8th high-pressure ball valve 8-8 meets another small-range pressure transducer 31-2 through another pressure meter switch 30-2.
The oil outlet end of described first Pilot operated check valve 18-1 is through the 9th high-pressure ball valve 8-9, the first passive loading one-way valve 19-1 and the first passive loading relief valve 20-1 connected tank.
The oil outlet end of described second Pilot operated check valve 18-2 is through the tenth high-pressure ball valve 8-10, the second passive loading one-way valve 19-2 and the second passive loading relief valve 20-2 connected tank.
the present invention manufactures oil cylinder Performance Detection again, comprises the following steps:
1) starting test: the piston rod of load cylinder 34 and the tested piston rod manufacturing oil cylinder 33 are again separated, open corresponding first high-pressure ball valve 8-1, second high-pressure ball valve 8-2, 5th high-pressure ball valve 8-5, 6th high-pressure ball valve 8-6, 7th high-pressure ball valve 8-7 and the 8th high-pressure ball valve 8-8, make the tested direct connected tank of rod chamber manufacturing oil cylinder 33 again, small-range relief valve 10 is opened completely, start tested metering pump 2, make fluid through tested high pressure filter 3, tested one-way valve 5, the right position of M type meta electro-hydraulic reversing valve 6, second tested one-way throttle valve 9-2, enter and testedly manufacture oil cylinder 33 rodless cavity again, regulate small-range relief valve 10 gradually, oil cylinder 33 setting in motion is manufactured again until tested, the minimum starting pressure of this process is recorded by the second small-range pressure transducer 31-2.
2) internal leakage test: to measure the tested leakage manufacturing oil cylinder 33 rodless cavity again, the piston rod of load cylinder 34 is connected with the tested piston rod bindiny mechanism 35 manufacturing oil cylinder 33 again, the tested oil cylinder 33 that manufactures again is parked in specified position (fray), close the 8th high-pressure ball valve 8-8, make rodless cavity fluid locked, start-up loading variable displacement pump 12 makes fluid through loading variable pump 12, the left position of P type meta electro-hydraulic reversing valve 16, first loads one-way throttle valve 17-1, first Pilot operated check valve 18-1, enter load cylinder 34 rodless cavity, for the tested oil cylinder 33 that manufactures again initiatively loads, make the second Pilot operated check valve 18-2 open simultaneously, the fluid of load cylinder 34 rod chamber is through the second Pilot operated check valve 18-2, second loads one-way throttle valve 17-2, P type meta electro-hydraulic reversing valve 16 flows back to fuel tank 37, regulate and load relief valve 14, make that tested to manufacture oil cylinder 33 rodless cavity internal pressure be again its rated pressure, realize initiatively loading, record the tested leakage rate manufacturing oil cylinder 33 fray again.
3) load efficiency test: the piston rod of load cylinder 34 is connected with the tested piston rod bindiny mechanism 35 manufacturing oil cylinder 33 again, tested loop is testedly manufacture oil cylinder 33 rodless cavity fuel feeding again, to load in loop in load cylinder 34 fluid through the first passive loading one-way valve 19-1, the first passive loading relief valve 20-1 connected tank 37, loading variable pump 12 is load cylinder 33 repairing through the right position of P type electro-hydraulic reversing valve 16, realizes manufacturing the passive loading of oil cylinder 33 again to tested.
4) Work condition analogue test: the piston rod of load cylinder 34 is connected with the tested piston rod bindiny mechanism 35 manufacturing oil cylinder 33 again, open corresponding third high pressure ball valve 8-3, 4th high-pressure ball valve 8-4, 7th high-pressure ball valve 8-7 and the 8th high-pressure ball valve 8-8, tested oil cylinder 33 rodless cavity that manufactures again is through equilibrium valve 28, M type meta electro-hydraulic reversing valve 6 connected tank 37, by Pilot operated check valve 18-1 in controlled loading loop, 18-2, P type meta electro-hydraulic reversing valve 16, loading variable pump 12 is initiatively loaded, for the tested oil cylinder 33 that manufactures again provides positive load, negative load, carry out Work condition analogue test.
Claims (5)
1. manufacture an oil cylinder performance detecting platform again, it is characterized in that: comprise tested loop, load loop and pilot control loop; Wherein:
Tested loop comprises: tested variable-frequency motor (1), tested metering pump (2), tested high pressure filter (3), tested proportional pressure control valve (4), tested one-way valve (5), M type meta electro-hydraulic reversing valve (6), flowmeter (7), six high-pressure ball valve (8-1, 8-2, 8-5, 8-6, 8-7, 8-8), two tested one-way throttle valve (9-1, 9-2), small-range relief valve (10), equilibrium valve (28), two pressure meter switch (30-1, 30-2), two small-range pressure transducer (31-1, 31-2), two wide range pressure transducer (32-1, 32-2) with return filter (36), in tested loop, tested variable-frequency motor (1) drives tested metering pump (2), the inlet port of tested metering pump (2) is connected with fuel tank (37), oil outlet is connected with tested high pressure filter (3), one, tested high pressure filter (3) outlet port branch is through tested proportional pressure control valve (4) connected tank (37), another branch to hold with the P of M type meta electro-hydraulic reversing valve (6) through tested one-way valve (5) and is connected, the T end of M type meta electro-hydraulic reversing valve (6) is through flowmeter (7) and return filter (36) connected tank (37), the A end of M type meta electro-hydraulic reversing valve (6) is through the first tested one-way throttle valve (9-1), 7th high-pressure ball valve (8-7) is connected with the tested rod chamber manufacturing oil cylinder (33) again, the B end of M type meta electro-hydraulic reversing valve (6) is through the first high-pressure ball valve (8-1), second tested one-way throttle valve (9-2), second high-pressure ball valve (8-2), 8th high-pressure ball valve (8-8) is connected with the tested rodless cavity manufacturing oil cylinder (33) again, the 6th high-pressure ball valve (8-6) is connected between the second tested one-way throttle valve (9-2) and the second high-pressure ball valve (8-2), 6th high-pressure ball valve (8-6) is through small-range relief valve (10) connected tank, the 5th high-pressure ball valve (8-5) is connected between the first tested one-way throttle valve (9-1) and the 7th high-pressure ball valve (8-7), 5th high-pressure ball valve (8-5) connected tank, between the B end and the first high-pressure ball valve (8-1) of M type meta electro-hydraulic reversing valve (6), be connected on the A end of equilibrium valve (28) through third high pressure ball valve (8-3), the B end of equilibrium valve (28) is connected between the second high-pressure ball valve (8-2) and the 8th high-pressure ball valve (8-8) through the 4th high-pressure ball valve (8-4),
Loading loop comprises: loading motor (11), loading variable pump (12), load high pressure filter (13), load proportional pressure control valve (14), load one-way valve (15), P type meta electro-hydraulic reversing valve (16), two loading one-way throttle valves (17-1,17-2), two Pilot operated check valves (18-1,18-2), two passive loading one-way valves (19-1,19-2) and two passive loading relief valves (20-1,20-2), in loading loop, loading motor (11) drive load variable displacement pump (12), the inlet port of loading variable pump (12) is connected with fuel tank (37), oil outlet is connected with loading high pressure filter (13), load one, high pressure filter (13) outlet port branch through loading proportional pressure control valve (14) connected tank (37), another branch to hold with the P of P type meta electro-hydraulic reversing valve (16) be connected through loading one-way valve (15), the T termination fuel tank of P type meta electro-hydraulic reversing valve (16), the A end of P type meta electro-hydraulic reversing valve (16) loads one-way throttle valve (17-1) through first, first Pilot operated check valve (18-1) is connected with the rodless cavity loading cylinder (34), the B end of P type meta electro-hydraulic reversing valve (16) loads one-way throttle valve (17-2) through second, second Pilot operated check valve (18-2) is connected with the rod chamber loading cylinder (34),
Pilot control loop comprises: control motor (21), control pump (22), control high pressure filter (23), controlling water kick valve (24), control one-way valve (25), five high-pressure stop valves (26-1,26-2,26-3,26-4,26-5), reduction valve (27) and pressure transducer (29), in guide's control loop, control motor (21) drived control pump (22), the inlet port of control pump (22) is connected with fuel tank (37), oil outlet is connected with control high pressure filter (23), control one, high pressure filter (23) outlet port branch through controlling water kick valve (24) connected tank (37), another branch connects the entrance point controlling one-way valve (25), the outlet end controlling one-way valve (25) is connected with one end of five high-pressure ball valves respectively, the other end of the first high-pressure stop valve (26-1) connects the control port of P type meta electro-hydraulic reversing valve (16), the other end of the second high-pressure stop valve (26-2) connects the control port of the first Pilot operated check valve (18-1), the other end of third high pressure cutoff valve (26-3) connects the control port of the second Pilot operated check valve (18-2), the other end of the 4th high-pressure stop valve (26-4) distinguishes the control port of Bonding pressure sensor (29) and equilibrium valve (28) through reduction valve (27), the other end of the 5th high-pressure stop valve (26-5) connects the control port of M type meta electro-hydraulic reversing valve (6).
2. one according to claim 1 manufactures oil cylinder performance detecting platform again, it is characterized in that: described 7th high-pressure ball valve (8-7) is connected to a wide range pressure transducer (32-1) near tested one end manufacturing oil cylinder (33) again, and the other end of the 7th high-pressure ball valve (8-7) connects a small-range pressure transducer (31-1) through the first pressure meter switch (30-1).
3. one according to claim 1 manufactures oil cylinder performance detecting platform again, it is characterized in that: described 8th high-pressure ball valve (8-8) is connected to another wide range pressure transducer (32-2) near tested one end manufacturing oil cylinder (33) again, and the other end of the 8th high-pressure ball valve (8-8) connects another small-range pressure transducer (31-2) through another pressure meter switch (30-2).
4. one according to claim 1 manufactures oil cylinder performance detecting platform again, it is characterized in that: the oil outlet end of described first Pilot operated check valve (18-1) is through the 9th high-pressure ball valve (8-9), the first passive loading one-way valve (19-1) and the first passive loading relief valve (20-1) connected tank.
5. one according to claim 1 manufactures oil cylinder performance detecting platform again, it is characterized in that: the oil outlet end of described second Pilot operated check valve (18-2) is through the tenth high-pressure ball valve (8-10), the second passive loading one-way valve (19-2) and the second passive loading relief valve (20-2) connected tank.
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| CN201510150840.0A CN104776086B (en) | 2015-04-01 | 2015-04-01 | Remanufacture oil cylinder performance detecting platform |
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| CN201510150840.0A CN104776086B (en) | 2015-04-01 | 2015-04-01 | Remanufacture oil cylinder performance detecting platform |
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| CN104776086B CN104776086B (en) | 2016-09-14 |
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| CN106837932A (en) * | 2017-03-06 | 2017-06-13 | 山东钢铁股份有限公司 | Detection means and detection method are let out in a kind of conticaster crystallizer vibrating servoBcylinder |
| CN106949118A (en) * | 2017-05-16 | 2017-07-14 | 蚌埠液力机械有限公司 | A kind of hydraulic cylinder durability testing stand |
| CN107642518A (en) * | 2017-10-19 | 2018-01-30 | 无锡必克液压股份有限公司 | The flow regeneration test device and method of testing of a kind of engineering machinery operating cylinder |
| CN108035944A (en) * | 2017-12-22 | 2018-05-15 | 山东大学 | A kind of frequency conversion high accuracy super high pressure hydraulic control loading system and method |
| CN109386515A (en) * | 2018-12-06 | 2019-02-26 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large_sized hydraulic cylinder testing stand |
| CN111536102A (en) * | 2020-05-11 | 2020-08-14 | 中航飞机起落架有限责任公司 | Hydraulic cylinder loading system and method for simulating counterweight mass force |
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| CN106837932A (en) * | 2017-03-06 | 2017-06-13 | 山东钢铁股份有限公司 | Detection means and detection method are let out in a kind of conticaster crystallizer vibrating servoBcylinder |
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| CN106949118B (en) * | 2017-05-16 | 2018-05-08 | 蚌埠液力机械有限公司 | A kind of hydraulic cylinder durability testing stand |
| CN107642518A (en) * | 2017-10-19 | 2018-01-30 | 无锡必克液压股份有限公司 | The flow regeneration test device and method of testing of a kind of engineering machinery operating cylinder |
| CN107642518B (en) * | 2017-10-19 | 2024-02-02 | 无锡必克液压股份有限公司 | Flow regeneration testing device and testing method for working cylinder of engineering machinery |
| CN108035944A (en) * | 2017-12-22 | 2018-05-15 | 山东大学 | A kind of frequency conversion high accuracy super high pressure hydraulic control loading system and method |
| CN109386515A (en) * | 2018-12-06 | 2019-02-26 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large_sized hydraulic cylinder testing stand |
| CN109386515B (en) * | 2018-12-06 | 2024-03-19 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large-sized hydraulic cylinder test bed |
| CN111536102A (en) * | 2020-05-11 | 2020-08-14 | 中航飞机起落架有限责任公司 | Hydraulic cylinder loading system and method for simulating counterweight mass force |
| CN111536102B (en) * | 2020-05-11 | 2022-08-02 | 中航飞机起落架有限责任公司 | Hydraulic cylinder loading system and method for simulating counterweight mass force |
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