CN214952136U - Servo valve core testing machine - Google Patents
Servo valve core testing machine Download PDFInfo
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- CN214952136U CN214952136U CN202120916027.0U CN202120916027U CN214952136U CN 214952136 U CN214952136 U CN 214952136U CN 202120916027 U CN202120916027 U CN 202120916027U CN 214952136 U CN214952136 U CN 214952136U
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Abstract
The utility model relates to a test machine for a valve core of a servo valve, which comprises a casing and a controller, wherein a test cavity for the valve core to move horizontally is arranged in the casing, and an oil inlet and at least one oil outlet which are respectively communicated with the test cavity are arranged on the casing; the oil inlet and each oil outlet are fixedly provided with a temperature sensor and a flow meter, and each temperature sensor and each flow meter are respectively in communication connection with the controller. The beneficial effects of the utility model are that simple structure can gather, lubricate inefficacy scheduling problem to the heat that servo case formed in the high-speed motion process and test, considers servo case material, cooperation technology, local structure isoparametric synthesis, finally makes reasonable structure, process scheme through the experiment, guarantees servo case's quality.
Description
Technical Field
The utility model relates to a test equipment technical field, concretely relates to servo valve case testing machine.
Background
The basic working principle of the main valve of the prior servo valve is that a mechanical-hydraulic amplification mechanism (such as a nozzle baffle, a jet plate and the like) drives a servo valve core to do axial reciprocating motion, and in the motion process, the valve core and a valve sleeve are continuously switched on and off to form controllable output of oil. When the motion frequency of the valve core is relatively low (50Hz), the heat generated by the valve core due to friction can be well conducted out by the oil liquid and can be relatively ignored. However, if the frequency of the servo valve is high (for example, above 100 Hz), the movement speed of the valve element is greatly increased, and the generated heat also rises sharply, at this time, the lubricating oil film of the oil may fail, so that the heat cannot be rapidly led out, and the heat is accumulated.
Because the metal has the phenomenon of expansion with heat and contraction with cold, the heat that the case high-frequency vibration produced can make ambient temperature rise to make case volume expansion, the case produces the contact with the outside valve barrel, and then produces frictional force, forms the complex relation at last. There are three types of coordination among machines: clearance fit, interference fit, transition fit. The volume expansion of the valve core can cause the fit relationship to be changed from the original clearance fit into the transition fit, even into the interference fit. Transition fit, interference fit can cause serious damage to the servo valve. The transition fit can cause the servo valve to have obvious abrasion, so that the service life of the servo valve is greatly reduced; the interference fit is the most serious, and the valve core is clamped in the valve sleeve, so that the servo valve cannot work normally.
In order to solve the problem, the utility model provides a servo machine case testing machine. The device can test the problems of heat accumulation, lubrication failure and the like formed in the high-speed movement process of the servo valve core when a high-frequency or ultrahigh-frequency servo valve is designed, comprehensively considers parameters such as servo valve core materials, matching processes, local structures and the like, and finally prepares a reasonable structure and a reasonable process scheme through experiments.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a servo valve case testing machine is provided, aim at solving above-mentioned technical problem.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a test machine for a valve element of a servo valve comprises a machine shell and a controller, wherein a test cavity for the valve element to horizontally move is arranged in the machine shell, and an oil inlet and at least one oil outlet which are respectively communicated with the test cavity are formed in the machine shell; the oil inlet and each oil outlet are fixedly provided with a temperature sensor and a flow meter, and the temperature sensors and the flow meters are respectively in communication connection with the controller.
The utility model has the advantages that: during testing, the valve core is positioned in the testing cavity, oil is sent into the testing cavity through the oil inlet in a mode which can be thought by a person skilled in the art, and meanwhile, the valve core horizontally moves in the testing cavity in the mode which can be thought by the person skilled in the art; in the process, the temperature and the flow of the oil at the oil inlet and the oil outlet are respectively detected through the temperature sensors and the flow meters, corresponding signals are sent to the controller, and the controller receives the corresponding signals and processes and analyzes the signals, so that whether the quality of the valve core meets the requirements or not is judged. The utility model discloses simple structure can gather, lubricate inefficacy scheduling problem test to the heat that servo valve core formed at high-speed motion in-process, to parameter comprehensive consideration such as servo valve core material, cooperation technology, local structure, finally makes reasonable structure, process scheme through the experiment, guarantees servo valve core's quality.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, one end of the casing is open, a driving piece used for driving the valve core to move horizontally is detachably mounted on the casing, and the driving piece is in communication connection with the controller.
The beneficial effect of adopting above-mentioned further scheme is that during the test, drive case horizontal migration through the driving piece, realize the high-speed removal of case in the test chamber to whether the quality of detecting the case accords with the standard.
Further, the driving member is a voice coil motor.
The voice coil motor has the advantages of simple structure, small size, high speed, high acceleration response speed and capability of realizing high-speed movement of the valve core.
Furthermore, a positioning box for accommodating the valve core is horizontally and fixedly arranged in the casing, one end of the positioning box, which is close to the open end of the casing, is open, a plurality of oil ports which penetrate through the positioning box from inside to outside are formed in the positioning box, and one end of the valve core extends out of the open end of the positioning box; a first spring is slidably mounted between the open end of the positioning box and the open end of the shell, the first spring is slidably sleeved on the valve element, one end of the first spring is fixedly connected with the open end of the positioning box, and the other end of the first spring is abutted to one end of the valve element.
The valve core has the advantages that the structure is simple, the design is reasonable, the impact of the valve core is relieved by the special structure of the positioning box and the first spring, the valve core can be quickly returned, and accordingly the valve core can reciprocate to operate at a high speed.
Furthermore, an elastic force sensor is horizontally arranged in the closed end of the positioning box, the force sensor is in communication connection with the controller, and one end of the force sensor is abutted against the other end of the valve core.
The beneficial effect of adopting above-mentioned further scheme is that during the test, detect the thrust of case through elastic force sensor to send the signal that corresponds to the controller, whether quality that judges the case meets the requirements.
Furthermore, a displacement sensor is horizontally moved and positioned in the closed end of the positioning box, the displacement sensor is in communication connection with the controller, one end of the displacement sensor is abutted against the other end of the valve core, and the other end of the displacement sensor horizontally extends out of the closed end of the positioning box.
The beneficial effect of adopting the above further scheme is that during testing, the position of the valve core is detected through the displacement sensor, and the corresponding signal is sent to the controller, so as to judge whether the quality of the valve core meets the requirements.
Furthermore, an elastic force sensor and a displacement sensor are horizontally arranged in the closed end of the positioning box, and the elastic force sensor and the displacement sensor are respectively in communication connection with the controller; one end of the elastic force sensor is abutted against the other end of the valve core, one end of the displacement sensor is fixedly connected with the other end of the elastic force sensor, and the other end of the displacement sensor horizontally extends to the outside of the closed end of the positioning box.
The beneficial effect who adopts above-mentioned further scheme is that during the test, through the thrust of elastic force sensor detection case, through the position of displacement sensor detection case simultaneously to send the signal that corresponds for the controller, so that judge whether the quality of case meets the requirements, judge more accurately.
Furthermore, the elastic force sensor is of a structure with a thin end and a thick end, a second spring is sleeved on the thin end in a sliding mode, one end of the second spring is fixedly connected with one end of the thick portion of the elastic force sensor, and the other end of the second spring is abutted to the other end of the valve core.
The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design utilizes the particularity of elastic force sensor structure and the cooperation of spring two, further realizes the quick return of case to realize the high-speed reciprocating motion of case.
Furthermore, the casing is also provided with at least one oil return port communicated with the test cavity, each oil return port is fixedly provided with the flowmeter, and each flowmeter is in communication connection with the controller.
The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design, the inside partial fluid of test chamber passes through the oil return opening oil return in the test procedure to detect the oil return volume of oil return opening department through the flowmeter, and send the signal that corresponds for the controller.
The oil inlet, the oil outlet and the oil return port are respectively communicated with the oil tank through pipelines, and an oil pump is fixedly mounted on the pipeline for communicating the oil tank with the oil inlet.
The beneficial effect who adopts above-mentioned further scheme is that during the test, send the fluid in the oil tank to the test intracavity through the oil inlet through the oil pump, in the fluid of test intracavity flows back to the oil tank through the oil-out, realizes the cyclic utilization of fluid.
Drawings
Fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a circuit block diagram of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a housing; 2. a valve core; 3. an oil inlet; 4. an oil outlet; 5. a drive member; 6. a positioning box; 7. a first spring; 8. an elastic force sensor; 9. a displacement sensor; 10. a second spring; 11. and an oil return port.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 4, the utility model provides a test machine for testing a valve element of a servo valve, which comprises a casing 1 and a controller, wherein a test cavity for horizontal movement of the valve element 2 is arranged in the casing 1, and an oil inlet 3 and at least one oil outlet 4 which are respectively communicated with the test cavity are arranged on the casing 1; the oil inlet 3 and each oil outlet 4 are fixedly provided with a temperature sensor and a flow meter in a mode which can be thought by a person skilled in the art, and each temperature sensor and each flow meter are respectively in communication connection with the controller. During testing, the valve core 2 is positioned in a testing cavity, oil is sent into the testing cavity through the oil inlet 3 in a mode which can be thought by a person skilled in the art, and meanwhile, the valve core 2 horizontally moves in the testing cavity in the mode which can be thought by the person skilled in the art; in the process, the temperature and the flow of the oil at the oil inlet 3 and the oil outlet 4 are respectively detected by the two temperature sensors and the two flow meters, corresponding signals are sent to the controller, and the controller receives the corresponding signals and processes and analyzes the signals, so that whether the quality of the valve core 2 meets the requirements or not is judged. The utility model discloses simple structure can gather, lubricate inefficacy scheduling problem to the heat that case 2 formed at high-speed motion in-process and test, considers 2 material, cooperation technology, local structure isoparametric synthesis of case, finally makes reasonable structure, process scheme through the experiment, guarantees the quality of case 2.
During testing, the casing 1 can be regarded as a valve sleeve.
Example 1
On the basis of the above structure, in the present embodiment, one end of the casing 1 is open, and the driving member 5 for driving the valve plug 2 to move horizontally is detachably installed, and the driving member 5 is in communication connection with the controller. During testing, the valve core is driven by the driving part 5 to move horizontally, so that the valve core 2 moves at a high speed in the testing cavity, and whether the quality of the valve core 2 meets the standard or not is detected.
The shell 1 is preferably a shell with an L-shaped structure, and the test cavity is positioned in the horizontal part of the shell; and the shell is provided with a threading hole for the line to pass through.
Example 2
On the basis of the first embodiment, preferably, in the present embodiment, the driving member 5 is a voice coil motor. The voice coil motor has the advantages of simple structure, small volume, high speed, high acceleration response speed and realization of high-speed movement of the valve core.
The shell of the voice coil motor is fixedly connected with the open end of the shell 1 through a bolt, the voice coil motor is manually taken down before testing, then the valve core 2 to be tested is placed in the shell 1, and finally the voice coil motor is installed again. Above-mentioned scheme easy dismounting is convenient for arrange case 2 in casing 1, or gets rid of case 2.
Example 3
On the basis of the first embodiment, in the first embodiment, the positioning box 6 for accommodating the valve core 2 is horizontally and fixedly installed in the casing 1, and the positioning box 6 and the casing 1 are integrally formed, so that the structure is simple; one end of the positioning box 6 close to the open end of the shell 1 is open, a plurality of oil ports which are internally and externally penetrated are arranged on the positioning box, and one end of the valve core 2 extends out of the open end of the positioning box 6; a first spring 7 is slidably mounted between the open end of the positioning box 6 and the open end of the casing 1, the first spring 7 is slidably sleeved on the valve core 2, one end of the first spring is fixedly connected with the open end of the positioning box 6 in a mode which can be thought by a person skilled in the art, the other end of the first spring is abutted against one end of the valve core 2, one end of the valve core 2 is provided with a groove, and the other end of the first spring 7 is positioned in the groove. This scheme simple structure, reasonable in design utilizes the special construction of location box 6 and spring 7 to realize the quick return of case 2 to realize the reciprocal high-speed operation of case 2.
Example 4
In the third embodiment, in the present embodiment, an elastic force sensor 8 is horizontally installed in the closed end of the positioning box 6, the elastic force sensor 8 is in communication connection with the controller, and one end of the elastic force sensor is abutted against the other end of the valve element 2. During testing, the thrust of the valve core 2 is detected through the elastic force sensor 8, and a corresponding signal is sent to the controller, so that whether the quality of the valve core 2 meets the requirement or not is judged.
In the process of moving the valve core 2, the driving element 5 drives the valve core 2 to move, and after the valve core 2 returns, the elastic force sensor 8 returns by utilizing the elasticity of the elastic force sensor.
Example 5
On the basis of the third embodiment, in this embodiment, the displacement sensor 9 is installed in the closed end of the positioning box 6 in a horizontally moving and positioning manner, the displacement sensor 9 is in communication connection with the controller, one end of the displacement sensor 9 abuts against the other end of the valve core 2, and the other end of the displacement sensor horizontally extends out of the closed end of the positioning box 6. During testing, the valve core 2 pushes the displacement sensor 9 to move, the position of the valve core 2 is detected through the displacement sensor 9, and a corresponding signal is sent to the controller, so that whether the quality of the valve core 2 meets the requirement or not is judged.
The positioning mode of the displacement sensor 9 is as follows: the displacement sensor 9 is of a structure with two thick ends and a thin middle part, one end of the displacement sensor is sleeved with a spring in a sliding mode, and two ends of the spring are respectively abutted to the thick part of one end of the displacement sensor 9 and the inner wall of the closed end of the positioning box 6. The displacement sensor 9 is returned by a spring in the process of moving.
Preferably, the displacement sensor 9 is preferably an LVDT displacement sensor, which has a fast response speed and is more accurate in measurement.
Example 6
On the basis of the third embodiment, in the present embodiment, an elastic force sensor 8 and a displacement sensor 9 are horizontally installed in the closed end of the positioning box 6, and the elastic force sensor 8 and the displacement sensor 9 are respectively in communication connection with the controller; one end of the elastic force sensor 8 is abutted against the other end of the valve core 2, one end of the displacement sensor 9 is fixedly connected with the other end of the elastic force sensor 8, and the other end horizontally extends to the outside of the closed end of the positioning box 6. During the test, detect the thrust of case 2 through elastic force sensor 8, detect the position of case 2 simultaneously through displacement sensor 9 to signal transmission who will correspond gives the controller, so that judge whether the quality of case 2 meets the requirements, judge more accurately.
The other end of the elastic force sensor 8 is provided with a clamping groove, one end of the displacement sensor 9 is provided with a clamping block matched with the clamping groove, and the clamping block is clamped into the clamping groove to be connected with the displacement sensor 9 and the elastic force sensor 8.
In the process of moving the valve core 2, the driving element 5 drives the valve core 2 to move, and after the valve core 2 returns, the elastic force sensor 8 returns by utilizing the elasticity of the elastic force sensor.
Preferably, the displacement sensor 9 is preferably an LVDT displacement sensor, which has a fast response speed and is more accurate in measurement.
Example 7
On the basis of the sixth embodiment, in the present embodiment, the elastic force sensor 8 has a structure with a thin end and a thick end, the thin end is slidably sleeved with the second spring 10, one end of the second spring 10 is fixedly connected with one end of the thick portion of the elastic force sensor 8 in a manner that can be thought by those skilled in the art, and the other end abuts against the other end of the valve element 2. This simple structure, reasonable in design utilizes the particularity of elastic force sensor 8 structure and the cooperation of spring two 10, further realizes the quick return of case 2 to realize the high-speed reciprocating motion of case 2.
Example 8
On the basis of above-mentioned structure, in this embodiment, still be equipped with at least one oil return opening 11 with the test chamber intercommunication on the casing 1, the equal fixed mounting in each oil return opening 11 department has a flowmeter, each flowmeter all is connected with the controller communication, simple structure, and reasonable in design, the inside partial fluid of test chamber passes through oil return opening 11 oil returns in the testing process to detect the oil return volume of oil return opening department through the flowmeter, and with corresponding signal transmission for the controller.
Preferably, in this embodiment, the number of the oil return ports 11 is two, one of the oil return ports 11 penetrates through the inside and the outside, one end of the other oil return port 11 is communicated with the test chamber, and the other end of the other oil return port 11 is communicated with one of the oil return ports 11.
Example 9
On the basis of the eighth embodiment, this embodiment further includes an oil tank, the oil inlet 3, the oil outlet 4 and the oil return opening 11 are respectively communicated with the oil tank through a pipeline, and an oil pump is fixedly installed on the pipeline of the oil tank communicated with the oil inlet 3. During the test, deliver to the test intracavity through oil pump with the fluid in the oil tank through oil inlet 3, the fluid in the test intracavity flows back to the oil tank in through oil-out 4, realizes the cyclic utilization of fluid.
The working principle of the utility model is as follows:
before testing, the voice coil motor is manually taken down, then the valve core 2 to be tested is placed in the shell 1, and finally the voice coil motor is installed again;
during testing, the valve core 2 is positioned in a testing cavity, oil is sent into the testing cavity through the oil inlet 3 in a mode which can be thought by a person skilled in the art, and meanwhile, the valve core 2 horizontally moves in the testing cavity in the mode which can be thought by the person skilled in the art; in the process, the temperature and the flow of the oil at the oil inlet 3 and the oil outlet 4 are respectively detected by two temperature sensors and two flow meters, corresponding signals are sent to a controller, and the controller receives the corresponding signals and processes and analyzes the signals, so that whether the quality of the valve core 2 meets the requirements is judged;
meanwhile, the elastic force sensor 8 and the displacement sensor 9 respectively measure the stress and the displacement of the valve core 2 and send corresponding signals to the controller, and the controller receives the corresponding signals and analyzes and processes the signals.
The researcher judges whether the quality of the valve core 2 meets the requirements according to the tested parameters, and the specific judgment principle is as follows:
the utility model can measure the temperature and flow of the oil liquid when the valve core 2 works; the displacement of the valve core 2, the pressure on one section of the valve core 2, the frequency of the valve core 2 movement and the process requirements of the valve core 2 in product design are combined to judge whether the performance of the valve core 2 meets the requirements, for example, the following condition analysis is taken as an example:
the temperature difference of the inlet liquid and the outlet liquid measured by the temperature sensor is too large, the oil outlet 4 has almost no flow, the valve core 2 is not communicated, the oil does not enter the valve core 2 at all or flows back to the oil tank from the oil return port 11, which shows that the valve core 2 is in transition fit with the machine shell 1 (equivalent to a valve sleeve), and then the condition of transition fit is judged according to the elastic force sensor 8 and the displacement sensor 9, if the elastic force sensor 8 has no stress basically and the displacement sensor 9 has no displacement, which shows that the transition fit of the valve core 2 and the machine shell 1 is serious, the elastic force sensor 8 has weak stress, and the displacement sensor 9 has a small amount, which shows that the transition fit of the valve core 2 and the machine shell 1 is slight.
If the motor is not started, no liquid flows out, the temperature difference of inlet and outlet liquid measured by the temperature sensor after the motor is started is not large, the oil outlet 4 has certain flow, the interference fit between the valve core 2 and the shell 1 is indicated, the interference fit condition is further judged according to the elastic force sensor 8 and the displacement sensor 9, the elastic force sensor 8 is stressed and rapidly rises, the displacement sensor 9 displays that the displacement fluctuates in a larger range, the fluctuation range is larger, the interference fit is more serious, namely, the flow of the oil outlet 4 does not accord with the product design requirements, the valve core 2 is unreasonable, if the requirements are met, the performance of the valve core 2 is judged according to the elastic force sensor 8 and the displacement sensor 9, the elastic force sensor 8 is stressed and rapidly rises, the displacement sensor 9 displays that the displacement fluctuates in a larger range, the larger fluctuation range is, and the material performance of the valve core 2 is indicated to be worse.
If before the motor did not open, there was liquid to flow out, temperature sensor found business turn over liquid temperature difference not big, and 4 flows of oil-out are normal, show case 2 and casing 1 clearance fit, more judge clearance fit's condition according to elastic force sensor 8 and displacement sensor 9 again, and elastic force sensor 8 atress is even, displacement sensor 9 displacement is undulant in less scope, show that case 2 and casing 1 clearance fit clearance is less.
And judging whether the performance of the valve core 2 meets the requirement or not according to the three measured performances of the valve core 2 and the flow inlet and outlet conditions under other conditions.
The testing machine continuously changes the material and the quality of the valve core according to the measured data, and finally the optimal scheme is obtained.
In the whole test process, the voice coil motor is intermittently powered on and off, and the reciprocating movement of the valve core 2 is realized by utilizing the characteristics of the elastic force sensor 8 and the displacement sensor 9, so that the performance of the valve core 2 is measured.
It should be noted that, the electronic components according to the present invention are all of the prior art, and the above components are electrically connected to the controller, and the control circuit between the controller and each component is of the prior art.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a servo valve case testing machine which characterized in that: the device comprises a machine shell (1) and a controller, wherein a test cavity for the horizontal movement of a valve core (2) is arranged in the machine shell (1), and an oil inlet (3) and at least one oil outlet (4) which are respectively communicated with the test cavity are arranged on the machine shell (1); and temperature sensors and flow meters are fixedly arranged at the oil inlet (3) and the oil outlets (4), and the temperature sensors and the flow meters are respectively in communication connection with the controller.
2. The servo valve spool test tester of claim 1 wherein: one end of the machine shell (1) is open, a driving piece (5) used for driving the valve core (2) to move horizontally is detachably mounted on the machine shell, and the driving piece (5) is in communication connection with the controller.
3. The servo valve spool test tester of claim 2 wherein: the driving piece (5) is a voice coil motor.
4. The servo valve spool test tester of claim 2 wherein: a positioning box (6) used for accommodating the valve core (2) is horizontally and fixedly arranged in the shell (1), one end of the positioning box (6) close to the open end of the shell (1) is open, a plurality of oil ports which penetrate inside and outside are formed in the positioning box, and one end of the valve core (2) extends out of the open end of the positioning box (6); a first spring (7) is slidably mounted between the open end of the positioning box (6) and the open end of the case (1), the first spring (7) is slidably sleeved on the valve element (2), one end of the first spring is fixedly connected with the open end of the positioning box (6), and the other end of the first spring is abutted to one end of the valve element (2).
5. The servo valve spool test tester of claim 4 wherein: an elastic force sensor (8) is horizontally arranged in the closed end of the positioning box (6), the elastic force sensor (8) is in communication connection with the controller, and one end of the elastic force sensor is abutted against the other end of the valve core (2).
6. The servo valve spool test tester of claim 4 wherein: the displacement sensor (9) is horizontally moved and positioned in the closed end of the positioning box (6), the displacement sensor (9) is in communication connection with the controller, one end of the displacement sensor is abutted to the other end of the valve core (2), and the other end of the displacement sensor horizontally extends out of the closed end of the positioning box (6).
7. The servo valve spool test tester of claim 4 wherein: an elastic force sensor (8) and a displacement sensor (9) are horizontally arranged in the closed end of the positioning box (6), and the elastic force sensor (8) and the displacement sensor (9) are respectively in communication connection with the controller; one end of the elastic force sensor (8) is abutted against the other end of the valve core (2), one end of the displacement sensor (9) is fixedly connected with the other end of the elastic force sensor (8), and the other end horizontally extends out of the closed end of the positioning box (6).
8. The servo valve spool test tester of claim 7 wherein: the elastic force sensor (8) is of a structure with a thin end and a thick end, a second spring (10) is sleeved on the thin end in a sliding mode, one end of the second spring (10) is fixedly connected with one end of the thick portion of the elastic force sensor (8), and the other end of the second spring is abutted to the other end of the valve core (2).
9. The servo valve spool test tester as claimed in any one of claims 1 to 8 wherein: the casing (1) is further provided with at least one oil return port (11) communicated with the test cavity, the flow meters are fixedly mounted at the oil return ports (11), and the flow meters are in communication connection with the controller.
10. The servo valve spool test tester of claim 9 wherein: the oil tank is characterized by further comprising an oil tank, the oil inlet (3), the oil outlet (4) and the oil return port (11) are communicated with the oil tank through pipelines respectively, and an oil pump is fixedly mounted on the pipeline communicated with the oil inlet (3) of the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916027.0U CN214952136U (en) | 2021-04-29 | 2021-04-29 | Servo valve core testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916027.0U CN214952136U (en) | 2021-04-29 | 2021-04-29 | Servo valve core testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214952136U true CN214952136U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120916027.0U Active CN214952136U (en) | 2021-04-29 | 2021-04-29 | Servo valve core testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214952136U (en) |
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2021
- 2021-04-29 CN CN202120916027.0U patent/CN214952136U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220601 Address after: 430080 No. 1212, iron and steel building, Wuhan University of science and technology, No. 743, Heping Avenue, Qingshan District, Wuhan City, Hubei Province Patentee after: Wuhan Wuke servo Electromechanical Equipment Co.,Ltd. Address before: 430081 Wuhan University of science and technology, 947 Heping Avenue, Qingshan District, Wuhan City, Hubei Province Patentee before: WUHAN University OF SCIENCE AND TECHNOLOGY |
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