CN202370940U - Hydraulic oil way suitable for various hydraulic element tests - Google Patents
Hydraulic oil way suitable for various hydraulic element tests Download PDFInfo
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- CN202370940U CN202370940U CN2011205566597U CN201120556659U CN202370940U CN 202370940 U CN202370940 U CN 202370940U CN 2011205566597 U CN2011205566597 U CN 2011205566597U CN 201120556659 U CN201120556659 U CN 201120556659U CN 202370940 U CN202370940 U CN 202370940U
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Abstract
The utility model relates to a hydraulic oil way suitable for various hydraulic element tests, which belongs to the technical field of hydraulic testing. The hydraulic oil way suitable for various hydraulic element tests comprises a proportion overflow valve, a solenoid directional valve, a throttling valve, a magnetic ball valve, a proportion directional valve, an electro-hydraulic servo valve, a fine filtering device, an energy accumulator, a servo oil cylinder, a pressure sensor, a temperature sensor, a flow sensor, a high pressure oil source, a low pressure oil source, an oil return port, an oil drainage port and a tested sample tool. The hydraulic oil way suitable for various hydraulic element tests solves the problem that a standard hydraulic testing oil way is simple in functions and poor in generality, and has the advantages of being high in automation degree, strong in comprehensive testing capability and capable of meeting comprehensive testing requirements of various hydraulic elements.
Description
Technical field
The utility model relates to a kind of hydraulic element combined test oil circuit, belongs to the Hydraulic Test Technique field.
Background technique
In order to guarantee the reliability of hydraulic system, test need make an experiment to the hydraulic element that system comprises.The government test standard has been formulated the code test oil circuit to independent hydraulic element, but test function is single, versatility is poor, is difficult to adapt to the experimental test of multiclass hydraulic element.Complex hydraulic system usually comprises polytype hydraulic element; Comprise conventional hydraulic partss such as oil hydraulic pump, oil hydraulic motor, oil hydraulic cylinder, hydrovalve; Possibly relate to the valve group of electrohydraulic control, hydraulic damper and specific function in addition; Therefore, a kind of hydraulic circuit that adapts to multiple hydraulic element test of design is very meaningful.
Summary of the invention
The purpose of the utility model provides a kind of hydraulic circuit of suitable multiclass hydraulic element test; Overcome the problem of standard hydraulic pressure test oil road function singleness, versatility difference; Not only can the experimental liquid press pump, conventional hydraulic parts such as oil hydraulic motor, oil hydraulic cylinder, hydrovalve, can also satisfy the test requirements document of electrohydraulic control, hydraulic damper and specific function valve group.
The purpose of the utility model realizes through following technical proposals.
The hydraulic circuit of a kind of suitable multiclass hydraulic element test of the utility model comprises: proportional pressure control valve, solenoid directional control valve, throttle valve, Solenoid ball valve, proportion directional valve, electrohydraulic control, fine filter, accumulator, servo-cylinder, pressure transducer, temperature transducer, flow transducer, high pressure fuel source P1, low pressure oil sources P2, return opening PT, drain tap PL and by the test specimen frock.
The function of each element and annexation are following in the oil circuit:
For the test hydraulic element various connecting ports are provided by the test specimen frock; Comprise PA, PB, POA, POB, PL, PT, M, P2 totally 8 ports; Wherein PL, PT and P2 are connected with drain tap PL, return opening PT and low pressure oil sources P2 respectively, and the M mouth is by the connection mouth of test solution cylinder pressure and servo-cylinder.
First proportional pressure control valve is used to regulate the pressure of high pressure fuel source, and its A mouth is connected with return opening with high pressure fuel source respectively with the B mouth; Second proportional pressure control valve is used for regulating the test return pressure, and its A mouth is connected with return opening with the T mouth of first solenoid directional control valve respectively with the B mouth; The 3rd proportional pressure control valve is used to regulate the loading back pressure of servo-cylinder, and its A mouth is connected with return opening with the T mouth of the 3rd solenoid directional control valve respectively with the B mouth.
First solenoid directional control valve is an E function three-position four-way valve; Be used to switch the fuel feeding direction of high pressure fuel source, its P mouth is connected with high pressure fuel source, and the T mouth is connected with the A mouth of second proportional pressure control valve; The A mouth is connected with the first flow sensor, the B mouth be connected by the PB mouth of test specimen frock; Second solenoid directional control valve is a C function two-position three-way valve, is used to control the fuel feeding break-make of electrohydraulic control, and its P mouth is connected with high pressure fuel source, and the T mouth is connected with return opening, A mouth sealing need not, the B mouth is connected with the A mouth of fine filter; The 3rd solenoid directional control valve is an E function three position four-way directional control valve; Be used to control the moving direction of servo-cylinder, its P mouth is connected with the low pressure oil sources, and the T mouth is connected with the A mouth of the 3rd proportional pressure control valve; The A mouth is connected with the A mouth of servo-cylinder, and the B mouth is connected with the B mouth of servo-cylinder; The 4th solenoid directional control valve is an A function two-bit triplet selector valve; Be used to switch the oily flow direction of output of the first proportion directional valve, its P mouth is connected with the B mouth of the second proportion directional valve, and the T mouth is connected with return opening; A mouth sealing need not, the B mouth is connected with the P mouth of the first proportion directional valve.
Throttle valve is used to regulate the fuel supply flow rate of low pressure oil, thereby regulates the movement velocity of servo-cylinder, and it is connected between the P mouth of low pressure oil sources and the 3rd solenoid directional control valve.
First Solenoid ball valve is used for by the release of test specimen frock PA mouth, and its A mouth and B mouth are connected to by the PA mouth and the drain tap of test specimen frock; Second Solenoid ball valve is used for by the release of test specimen frock PB mouth, and its A mouth is connected respectively by the PB mouth of test specimen frock and flow transducer 29 with the B mouth; The 3rd Solenoid ball valve is used to switch the break-make by test specimen frock POA mouth output circuit, and its A mouth is connected respectively by the test specimen frock POA mouth and second flow transducer with the B mouth; The 4th Solenoid ball valve is used to switch the break-make by test specimen frock POB mouth output circuit, and its A mouth is connected respectively by the B mouth of the test specimen frock POB mouth and the second proportion directional valve with the B mouth.
The first proportion directional valve is used for being loaded by the output of test specimen frock PA mouth, its A mouth and T mouth seal need not, its B mouth and P mouth connect the B mouth of second flow transducer and the 4th solenoid directional control valve respectively; The second proportion directional valve is used for being loaded by the output of test specimen frock PB mouth, its A mouth and T mouth seal need not, its B mouth and P mouth are connected the B mouth and the return opening of the 4th Solenoid ball valve respectively.
Electrohydraulic control is the force feedback type two-stage electrohydraulic control of zero lap, and effect is to realize the control of the position closed loop of servo-cylinder, and its P mouth is connected with fine filter, and the T mouth is connected with return opening, and the A mouth is connected with the B mouth with the A mouth of servo-cylinder respectively with the B mouth; The fine filter effect is to prevent that electrohydraulic control from being polluted, and it is connected between the P mouth of A mouth and electrohydraulic control of second solenoid directional control valve; The effect of accumulator is the pulsation that absorbs the electrohydraulic control charge oil pressure, and it is constant to keep-up pressure, and it is connected the P mouth of electrohydraulic control; The effect of servo-cylinder is for by the test solution cylinder pressure top being loaded; Can also drive simultaneously the hydraulic damper motion that is tried; Its A mouth is connected with the B mouth with the A mouth of the 3rd solenoid directional control valve and electrohydraulic control respectively with B, its piston rod be connected by the M mouth of test specimen frock.
The effect of first pressure transducer is the pressure that detects high pressure fuel source, and it is connected the P mouth of first solenoid directional control valve; The effect of second pressure transducer and the 3rd pressure transducer is to detect by the pressure of test specimen frock PA mouth and PB mouth, and they are connected to by test specimen frock PA mouth and PB mouth; The effect of the 4th pressure transducer and the 5th pressure transducer is to detect by the pressure of test specimen frock POA mouth and POB mouth, and they are connected to by test specimen frock POA mouth and POB mouth; The effect of the 6th pressure transducer and the 7th pressure transducer is to detect the A mouth of servo-cylinder and the pressure of B mouth, thereby calculates the ouput force of servo-cylinder, and they are connected to the A mouth and the B mouth of servo-cylinder; Temperature transducer is used to detect the test oil temperature, and it is connected the P mouth of first solenoid directional control valve; The first flow sensor is used for detecting by test specimen frock PA mouth flow, and it is connected on the A mouth of first solenoid directional control valve and by between the test specimen frock PA mouth; Second flow transducer is used for detecting by test specimen frock POA mouth flow, and it is connected between the B mouth of B mouth and the first proportion directional valve of the 3rd Solenoid ball valve; The 3rd flow transducer is an a small amount of range of flow meter, is used to measure the leakage flow by test specimen frock PB mouth, and it is connected between the B mouth and drain tap of second Solenoid ball valve.
The utility model has solved the problem of standard hydraulic pressure test oil road function singleness, versatility difference, and automaticity is high, and the combined test ability is strong, can satisfy the Integrated Test Requirement of polytype hydraulic element.
Description of drawings
Fig. 1: a kind of hydraulic circuit of suitable multiclass hydraulic element test;
Wherein, 1-first proportional pressure control valve, 2-second proportional pressure control valve, 3-the 3rd proportional pressure control valve, 4-first solenoid directional control valve, 5-second solenoid directional control valve, 6-the 3rd solenoid directional control valve, 7-the 4th solenoid directional control valve, 8-throttle valve, 9-first Solenoid ball valve, 10-second Solenoid ball valve, 11-the 3rd Solenoid ball valve, 12-the 4th Solenoid ball valve, the 13-first proportion directional valve, the 14-second proportion directional valve, 15-electrohydraulic control, 16-fine filter, 17-accumulator, 18-servo-cylinder, 19-first pressure transducer, 20-second pressure transducer, 21-the 3rd pressure transducer, 22-the 4th pressure transducer, 23-the 5th pressure transducer, 24-the 6th pressure transducer, 25-the 7th pressure transducer, 26-temperature transducer, 27-first flow sensor, 28-second flow transducer, 29-the 3rd flow transducer, 30-high pressure fuel source P1,31-low pressure oil sources, 32-return opening, 33-drain tap.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
The hydraulic circuit of a kind of suitable multiclass hydraulic element test of the utility model comprises: first proportional pressure control valve 1, second proportional pressure control valve 2, the 3rd proportional pressure control valve 3, first solenoid directional control valve 4, second solenoid directional control valve 5, the 3rd solenoid directional control valve 6, the 4th solenoid directional control valve 7, throttle valve 8, first Solenoid ball valve 9, second Solenoid ball valve 10, the 3rd Solenoid ball valve 11, the 4th Solenoid ball valve 12, the first proportion directional valve 13, the second proportion directional valve 14, electrohydraulic control 15, fine filter 16, accumulator 17, servo-cylinder 18, first pressure transducer 19, second pressure transducer 20, the 3rd pressure transducer 21, the 4th pressure transducer 22, the 5th pressure transducer 23, the 6th pressure transducer 24, the 7th pressure transducer 25, temperature transducer 26, first flow sensor 27, second flow transducer 28, the 3rd flow transducer 29, high pressure fuel source 30, low pressure oil sources 31, return opening 32, drain tap 33.
When being oil hydraulic pump by test specimen; First solenoid directional control valve 4 is in pass-through state, and from being sucked low pressure oil by the P2 mouth of test specimen frock, the high pressure oil of its output is through being exported by the PA mouth of test specimen frock by the test solution press pump; Through first flow sensor 27, first solenoid directional control valve 4 and first proportional pressure control valve 1; Get into return opening 32, the leakage oil of oil hydraulic pump connects by the PL mouth of test specimen frock, flows into drain tap 33.First proportional pressure control valve 1 is to be loaded by the test solution press pump, and first flow sensor 27, first pressure transducer 19 and temperature transducer 26 be flow, pressure and the oil temperature of test fluid press pump delivery outlet respectively.
When being oil hydraulic motor by test specimen, connected respectively by the PA mouth of test specimen frock and PB mouth by two hydraulic fluid ports of test solution pressure motor, the leakage of oil hydraulic pump oil connects by the PL mouth of test specimen frock, flows into drain tap PL.The high pressure oil of high pressure fuel source 30 output successively through first solenoid directional control valve 4, by the test solution pressure motor and second proportional pressure control valve 2, flow into return opening 32.First proportional pressure control valve 1 is used to regulate the charge oil pressure by the test solution pressure motor, and second proportional pressure control valve 2 is used to regulate the back pressure on-load pressure by the test solution pressure motor, and first solenoid directional control valve 4 is used to change the sense of rotation by the test solution pressure motor.The flow and oil temperature of first flow sensor 27 and temperature transducer 26 difference testing hydraulic motors, second pressure transducer 20 and the 3rd pressure transducer 21 are measured the pressure of two hydraulic fluid ports of oil hydraulic motor respectively.
When being oil hydraulic cylinder by test specimen, tried cylinder two cavity oil mouth to connect respectively by the PA mouth of test specimen frock and PB mouth, tried cylinder piston rod and connected by the M mouth of test specimen frock.The high pressure oil of high pressure fuel source 30 output successively through first solenoid directional control valve 4, try the cylinder and second proportional pressure control valve 2, inflow return opening 32.First proportional pressure control valve 1 is used for regulating by examination oil supply cylinder pressure, and second proportional pressure control valve 2 is used to regulate the back pressure on-load pressure by the examination cylinder, and first solenoid directional control valve 4 is used to change the sense of rotation by the examination cylinder.The flow and oil temperature of first flow sensor 27 and temperature transducer 26 difference test fluid cylinder pressures, second pressure transducer 20 and the 3rd pressure transducer 21 are measured the pressure that is tried two hydraulic fluid ports of cylinder respectively.The 3rd proportional pressure control valve 3, the 3rd solenoid directional control valve 6, throttle valve 8 and servo-cylinder 18 constituted by the examination cylinder directly to the passive loading system of top formula; Servo-cylinder 18 carries out passive loading under being driven by the examination cylinder; Its fuel feeding is provided by low pressure oil sources 31; And by throttle valve 8 adjusting fuel supply flow rates, its oil extraction is big or small through the loading that the 3rd proportional pressure control valve 3 backs get into return openings 32, the three proportional pressure control valves 3 adjusting servo-cylinders 18.
When being hydraulic damper, connected by the M mouth of test specimen frock, by servo its motion of valve-controlled cylinder system drive by the driveshaft of test specimen by test specimen.The outage of first solenoid directional control valve 4,5 energisings of second solenoid directional control valve, the high pressure oil of high pressure fuel source 30 outputs successively gets into servo-cylinders 18 through second solenoid directional control valve 5, fine filter 16, accumulator 17, electrohydraulic control 15, flows back to return opening 32 then.By the examination cylinder and second proportional pressure control valve 2, flow into return opening 32.First proportional pressure control valve 1 is used to regulate the charge oil pressure of servo valve-controlled cylinder; Fine filter 16 is used to improve the turbidity test of electrohydraulic control 15 inlet fluid; Accumulator 17 is used to keep the pressure stability of electrohydraulic control 15 inlets; Electrohydraulic control 15 is used to control the movement velocity of servo-cylinder, realizes position closed loop control.
The hydrovalve kind is more, and it comprises pressure valve, Flow valve, one-way valve, selector valve, electrohydraulic control and specific function valve group.
When being pressure valve and Flow valve by test specimen; Inlet opening by the examination valve is connected respectively by the PA mouth of test specimen frock and POA mouth with delivery outlet; First solenoid directional control valve 4 is in pass-through state; The energising of the 3rd Solenoid ball valve 11, high pressure oil gets into by the inlet opening of examination valves through first solenoid directional control valve 4, first flow sensor 27, after the 3rd Solenoid ball valve 11, second flow transducer 28, the first proportion directional valve 13, the 4th solenoid directional control valve 7 are passed through in the output that is tried valve; Flow back to return opening 32; First proportional pressure control valve 1 is used to regulate the charge oil pressure by the examination valve, and the first flow sensor 27 and second flow transducer 28 are measured respectively by the input flow rate and the output flow of examination valve, and the first proportion directional valve 13 is used to regulate the delivery outlet load size by the examination valve.
When being one-way valve by test specimen; Two hydraulic fluid ports by the examination valve connect respectively by the PA mouth of test specimen frock and PB mouth; High pressure oil gets into by the input hydraulic fluid port of examination valves through first solenoid directional control valve 4, first flow sensor 27, after the output oil that try valve passes through first solenoid directional control valve 4 and proportional pressure control valve 2, flows back to return opening 32; Solenoid directional control valve 1 is used to control the fuel feeding direction by the examination valve; Proportional pressure control valve 1 is used to regulate the charge oil pressure by the examination valve, and flow transducer 27 is measured by the flow of examination valve, and proportional pressure control valve 2 is used to regulate the delivery outlet load size by the examination valve.
When being selector valve by test specimen, the P mouth that is tried valve and T mouth are connected with the PB mouth with being connected by the PA mouth of test specimen frock respectively, and the A mouth that is tried valve and B mouth are connected with the POB mouth with being connected by the POA mouth of test specimen frock respectively.First solenoid directional control valve 4 is in pass-through state; High pressure oil gets into by the P mouth of examination valves through first solenoid directional control valve 4, first flow sensor 27; By the output oil of A mouth or the B mouth of examination valve through the 3rd Solenoid ball valve 11, second flow transducer 28, the first proportion directional valve 13, the 4th solenoid directional control valve 7, the 4th Solenoid ball valve 12; Flow back to by the T mouth of examination valve, through behind first solenoid directional control valve 4 and second proportional pressure control valve 2, flow back to return opening 32 then.First proportional pressure control valve 1 is used to regulate the charge oil pressure by the examination valve; The first flow sensor 27 and second flow transducer 28 are measured respectively by the input flow rate and the output flow of examination valve; The first proportion directional valve 13 is used to regulate the load by between examination valve A mouth and the B mouth, and second proportional pressure control valve 2 is used to regulate the back pressure pressure size by examination valve T mouth.Leakage oil by examination valve T mouth flows back to drain tap 33 through second Solenoid ball valve 10 and the 3rd flow transducer 29, and flow transducer 29 is used for measuring by examination valve T mouth leakage rate size.
When being electrohydraulic control by test specimen, the test principle of test principle and selector valve is basic identical, and when carrying out the test of no load discharge and load flow, the 3rd Solenoid ball valve 12 and the 4th Solenoid ball valve 13 need energising; When carrying out the test of Pressure gain and leakage characteristics, the 3rd Solenoid ball valve 12 and the 4th Solenoid ball valve 13 need outage.
The utility model is including, but not limited to this mode of execution, any modification of carrying out under every spirit and principle at the utility model, deletes and adds, and all will be regarded as within the protection domain of the utility model.
Claims (2)
1. the hydraulic circuit of a suitable multiclass hydraulic element test is characterized in that: comprise first proportional pressure control valve, second proportional pressure control valve, the 3rd proportional pressure control valve, first solenoid directional control valve, second solenoid directional control valve, the 3rd solenoid directional control valve, the 4th solenoid directional control valve, throttle valve, first Solenoid ball valve, second Solenoid ball valve, the 3rd Solenoid ball valve, the 4th Solenoid ball valve, the first proportion directional valve, the second proportion directional valve, electrohydraulic control, fine filter, accumulator, servo-cylinder, first pressure transducer, second pressure transducer, the 3rd pressure transducer, the 4th pressure transducer, the 5th pressure transducer, the 6th pressure transducer, the 7th pressure transducer, temperature transducer, first flow sensor, second flow transducer, the 3rd flow transducer, high pressure fuel source, low pressure oil sources, return opening and drain tap; Annexation is following:
The A mouth of first proportional pressure control valve is connected with return opening with high pressure fuel source respectively with the B mouth; The A mouth of second proportional pressure control valve is connected with return opening with the T mouth of first solenoid directional control valve respectively with the B mouth; The A mouth of the 3rd proportional pressure control valve is connected with return opening with the T mouth of the 3rd solenoid directional control valve respectively with the B mouth;
First solenoid directional control valve is an E function three-position four-way valve, and its P mouth is connected with high pressure fuel source, and the T mouth is connected with the A mouth of second proportional pressure control valve, and the A mouth is connected with the first flow sensor, the B mouth be connected by the PB mouth of test specimen frock; Second solenoid directional control valve is a C function two-position three-way valve, is used to control the fuel feeding break-make of electrohydraulic control, and its P mouth is connected with high pressure fuel source, and the T mouth is connected with return opening, A mouth sealing need not, the B mouth is connected with the A mouth of fine filter; The 3rd solenoid directional control valve is an E function three position four-way directional control valve, and its P mouth is connected with the low pressure oil sources, and the T mouth is connected with the A mouth of the 3rd proportional pressure control valve, and the A mouth is connected with the A mouth of servo-cylinder, and the B mouth is connected with the B mouth of servo-cylinder; The 4th solenoid directional control valve is an A function two-bit triplet selector valve, and its P mouth is connected with the B mouth of the second proportion directional valve, and the T mouth is connected with return opening, A mouth sealing need not, the B mouth is connected with the P mouth of the first proportion directional valve; Throttle valve is connected between the P mouth of low pressure oil sources and the 3rd solenoid directional control valve;
The A mouth of first Solenoid ball valve and B mouth are connected to by the PA mouth and the drain tap of test specimen frock; Its A mouth of second Solenoid ball valve is connected respectively by the PB mouth and the flow transducer of test specimen frock with the B mouth; The A mouth of the 3rd Solenoid ball valve is connected respectively by the test specimen frock POA mouth and second flow transducer with the B mouth; The A mouth of the 4th Solenoid ball valve is connected respectively by the B mouth of the test specimen frock POB mouth and the second proportion directional valve with the B mouth;
The sealing of the A mouth of the first proportion directional valve and T mouth need not, its B mouth and P mouth connect the B mouth of second flow transducer and the 4th solenoid directional control valve respectively; The sealing of the A mouth of the second proportion directional valve and T mouth need not, its B mouth and P mouth are connected the B mouth and the return opening of the 4th Solenoid ball valve respectively;
Electrohydraulic control is the force feedback type two-stage electrohydraulic control of zero lap, and its P mouth is connected with fine filter, and the T mouth is connected with return opening, and the A mouth is connected with the B mouth with the A mouth of servo-cylinder respectively with the B mouth; Fine filter is connected between the P mouth of A mouth and electrohydraulic control of second solenoid directional control valve; Accumulator is connected the P mouth of electrohydraulic control; The A mouth of servo-cylinder is connected with the B mouth with the A mouth of the 3rd solenoid directional control valve and electrohydraulic control respectively with B, its piston rod be connected by the M mouth of test specimen frock;
First pressure transducer is connected the P mouth of first solenoid directional control valve; Second pressure transducer and the 3rd pressure transducer are connected to by test specimen frock PA mouth and PB mouth; The 4th pressure transducer and the 5th pressure transducer are connected to by test specimen frock POA mouth and POB mouth; The 6th pressure transducer and the 7th pressure transducer are connected to the A mouth and the B mouth of servo-cylinder; Temperature transducer is connected the P mouth of first solenoid directional control valve; The series connection of first flow sensor is at the A of first solenoid directional control valve mouth with between by test specimen frock PA mouth; Second flow transducer is connected between the B mouth of B mouth and the first proportion directional valve of the 3rd Solenoid ball valve; The 3rd flow transducer is connected between the B mouth and drain tap of second Solenoid ball valve.
2. the hydraulic circuit of a kind of suitable multiclass hydraulic element test according to claim 1; It is characterized in that: for the test hydraulic element various connecting ports are provided by the test specimen frock; Comprise PA, PB, POA, POB, PL, PT, M, P2 totally 8 ports; Wherein PL, PT and P2 are connected with drain tap PL, return opening PT and low pressure oil sources P2 respectively, and the M mouth is by the connection mouth of test solution cylinder pressure and servo-cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205566597U CN202370940U (en) | 2011-12-28 | 2011-12-28 | Hydraulic oil way suitable for various hydraulic element tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205566597U CN202370940U (en) | 2011-12-28 | 2011-12-28 | Hydraulic oil way suitable for various hydraulic element tests |
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| Publication Number | Publication Date |
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| CN202370940U true CN202370940U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205566597U Expired - Fee Related CN202370940U (en) | 2011-12-28 | 2011-12-28 | Hydraulic oil way suitable for various hydraulic element tests |
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| CN (1) | CN202370940U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493974A (en) * | 2011-12-28 | 2012-06-13 | 中国人民解放军65185部队 | Hydraulic oil circuit suitable for tests of multiple kinds of hydraulic components |
| CN107339286A (en) * | 2017-07-06 | 2017-11-10 | 杭州华泰电液成套技术有限公司 | A kind of mechanical compensation Power Recovery type pump motor test platform and its method |
| CN109114071A (en) * | 2018-10-24 | 2019-01-01 | 上海立新液压有限公司 | A kind of hydraulic automatic test oil source block system |
| CN111677719A (en) * | 2020-06-18 | 2020-09-18 | 北京天地玛珂电液控制系统有限公司 | Automatic test system and method for electromagnetic directional valve |
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2011
- 2011-12-28 CN CN2011205566597U patent/CN202370940U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493974A (en) * | 2011-12-28 | 2012-06-13 | 中国人民解放军65185部队 | Hydraulic oil circuit suitable for tests of multiple kinds of hydraulic components |
| CN102493974B (en) * | 2011-12-28 | 2014-11-05 | 中国人民解放军65185部队 | Hydraulic oil circuit suitable for tests of multiple kinds of hydraulic components |
| CN107339286A (en) * | 2017-07-06 | 2017-11-10 | 杭州华泰电液成套技术有限公司 | A kind of mechanical compensation Power Recovery type pump motor test platform and its method |
| CN109114071A (en) * | 2018-10-24 | 2019-01-01 | 上海立新液压有限公司 | A kind of hydraulic automatic test oil source block system |
| CN109114071B (en) * | 2018-10-24 | 2024-04-09 | 上海立新液压有限公司 | Hydraulic automatic oil source block testing system |
| CN111677719A (en) * | 2020-06-18 | 2020-09-18 | 北京天地玛珂电液控制系统有限公司 | Automatic test system and method for electromagnetic directional valve |
| CN111677719B (en) * | 2020-06-18 | 2022-04-08 | 北京天玛智控科技股份有限公司 | Automatic test system and method for electromagnetic directional valve |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20121228 |