CN110779576A - Detection equipment for proportional servo valve - Google Patents
Detection equipment for proportional servo valve Download PDFInfo
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- CN110779576A CN110779576A CN201911088595.XA CN201911088595A CN110779576A CN 110779576 A CN110779576 A CN 110779576A CN 201911088595 A CN201911088595 A CN 201911088595A CN 110779576 A CN110779576 A CN 110779576A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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Abstract
The invention discloses detection equipment of a proportional servo valve, which comprises a base, a first fixing seat, a test ejector rod, a dial indicator supporting seat, a force sensor, a thrust piece needle bearing, a position calibration screw, a feeding screw, a screw supporting seat, a feeding hand wheel and a test device, wherein the feeding hand wheel is connected with one end of the feeding screw, the other end of the feeding screw penetrates through the screw supporting seat and is fixedly connected with one end of the force sensor, a measuring rod of the dial indicator is connected with the position calibration screw, the position calibration screw is fixed with the feeding screw, the other end of the force sensor is connected with the test ejector rod, the test device comprises a second fixing seat and a component to be tested, which is fixed on the second fixing seat, and the component to be tested is positioned on one side of the test ejector rod. The invention can detect various parameters of the proportional servo valve, and effectively improves the detection precision, the detection efficiency and the matching qualification rate.
Description
Technical Field
The invention relates to the technical field of proportional servo valve detection, in particular to a detection device of a proportional servo valve.
Background
The detection method generally adopted for the parameter detection of the proportional servo valve is as follows: the common measuring tool is used for testing partial parameters, and the common measuring tool is difficult to measure accurately due to the fact that the requirement on measuring accuracy is very high. And some parameters are judged completely by hand feeling, are not quantized, and the matching qualified rate is unstable, so that rework is caused. However, the matching efficiency is difficult to improve. In addition, partial module parameters lack detection means, and the difficulty of judging the module with the parameter defect problem after valve assembly is increased.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide the detection equipment for the proportional servo valve, which can detect various parameters of the proportional servo valve, and effectively improve the detection precision, the detection efficiency and the matching qualified rate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a detection device of a proportional servo valve comprises a base, a first fixing seat, a test ejector rod, a dial indicator supporting seat, a force sensor, a thrust piece needle bearing, a position calibration screw, a feed screw, a screw supporting seat, a feed hand wheel and a test device, wherein the first fixing seat is fixed on the base, the dial indicator supporting seat and the screw supporting seat are both arranged on the first fixing seat, the feed hand wheel is connected with one end of the feed screw, the other end of the feed screw penetrates through the screw supporting seat and is fixedly connected with one end of the force sensor, the thrust piece needle bearing is sleeved at the position of the feed screw close to the force sensor, the dial indicator is fixed on the dial indicator supporting seat, a measuring rod of the dial indicator is connected with the position calibration screw, and the position calibration screw is fixed with the feed screw, the other end of the force sensor is connected with the test ejector rod, the test device comprises a second fixing seat and a component to be tested, the component to be tested is fixed on the second fixing seat, the second fixing seat is fixed on the base, and the component to be tested is located on one side of the test ejector rod.
Preferably, in the detection device of the proportional servo valve, the component to be detected includes a first proportional electromagnet, a first displacement sensor and a first dial indicator, the first proportional electromagnet is fixed on the second fixing seat, the first dial indicator is connected to the first displacement sensor, the first displacement sensor is further connected to a thrust output rod of the first proportional electromagnet, and the thrust output rod of the first proportional electromagnet can be pushed by the test ejector rod.
Preferably, in the detection device of the proportional servo valve, the first displacement sensor is an LVDT displacement sensor.
Preferably, the detection device of the proportional servo valve further comprises a control box, an LVDT analysis plate and a multimeter, wherein a power supply is arranged in the control box, the power supply is connected with a power line of the first proportional electromagnet, the LVDT analysis plate is connected with the first displacement sensor, and the multimeter is used for measuring the feedback voltage of the control box.
Preferably, in the detection equipment for the proportional servo valve, the component to be detected comprises a support rod, a valve body, a valve sleeve, a valve core and a second dial indicator, the valve sleeve is fixed on the support rod, the valve body is fixedly connected with the valve sleeve, the valve core is positioned in the valve sleeve and can be pushed by the test ejector rod to move in the valve sleeve, and the valve core is also connected with the second dial indicator.
Preferably, in the detection equipment of the proportional servo valve, the component to be tested comprises a spring seat, a first spring, a spring compression bar, a test mounting seat and a third dial indicator, the spring seat is fixed on the second fixing seat, the first spring and the test mounting seat are both fixed on the spring seat, the spring compression bar is installed on the test mounting seat and in sliding connection with the test mounting seat, the spring compression bar can be pushed and extruded by the test ejector rod through the first spring, and the first spring is further connected with the third dial indicator.
Preferably, in the detection equipment of the proportional servo valve, the component to be detected comprises a second spring, a second proportional electromagnet, a second displacement sensor and a fourth dial indicator, the second proportional electromagnet is fixed on the second fixing seat, the second displacement sensor is connected with a thrust output rod of the second proportional electromagnet, the second spring is fixed on the thrust output rod of the second proportional electromagnet and located between the thrust output rod of the second proportional electromagnet and the test ejector rod, the second spring can be extruded by the test ejector rod, and the second spring is further connected with the fourth dial indicator.
Preferably, in the detection device of the proportional servo valve, the second displacement sensor is an LVDT displacement sensor.
Preferably, the detection equipment for the proportional servo valve further comprises an oscilloscope, and the oscilloscope is electrically connected with the second proportional electromagnet.
Compared with the prior art, the detection equipment for the proportional servo valve comprises a base, a first fixed seat, a test ejector rod, a dial indicator supporting seat, a force sensor, a thrust piece needle bearing, a position calibration screw, a feeding screw, a screw rod supporting seat, a feeding hand wheel and a test device, wherein the first fixed seat is fixed on the base, the dial indicator supporting seat and the screw rod supporting seat are both arranged on the first fixed seat, the feeding hand wheel is connected with one end of the feeding screw rod, the other end of the feeding screw rod penetrates through the screw rod supporting seat and is fixedly connected with one end of the force sensor, the thrust piece needle bearing is sleeved at the position of the feeding screw rod close to the force sensor, the dial indicator is fixed on the dial indicator supporting seat, and a measuring rod of the dial indicator is connected with the position calibration screw, the position calibration screw is fixed with the feeding screw rod, the other end of the force sensor is connected with the testing ejector rod, the testing device comprises a second fixing seat and a component to be tested, the component to be tested is fixed on the second fixing seat, the second fixing seat is fixed on the base, and the component to be tested is located on one side of the testing ejector rod. The invention can detect various parameters of the proportional servo valve, and effectively improves the detection precision, the detection efficiency and the matching qualification rate.
Drawings
FIG. 1 is a schematic structural diagram of a first preferred embodiment of a proportional servo valve detection apparatus according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of a second preferred embodiment of a detection apparatus for a proportional servo valve according to the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a schematic structural diagram of a third preferred embodiment of a detection apparatus for a proportional servo valve according to the present invention;
FIG. 6 is a cross-sectional view of C-C of FIG. 5;
FIG. 7 is a schematic structural diagram of a fourth preferred embodiment of a detection apparatus for a proportional servo valve according to the present invention;
fig. 8 is a cross-sectional view of D-D in fig. 7.
Detailed Description
The invention provides a detection device of a proportional servo valve, which is further described in detail below by referring to the attached drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "on," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.
Referring to fig. 1 and 2, the detection apparatus for a proportional servo valve provided in this embodiment includes a base 1, a first fixing seat 2, a test ejector rod 3, a dial indicator 4, a dial indicator support seat 5, a force sensor 6, a thrust piece needle bearing 7, a position calibration screw 8, a feed screw 9, a screw support seat 10, a feed hand wheel 11 and a test device, where the first fixing seat 2 is fixed on the base 1, the dial indicator support seat 5 and the screw support seat 10 are both installed on the first fixing seat 2, the feed hand wheel 11 is connected to one end of the feed screw 9, the other end of the feed screw 9 passes through the screw support seat 10 and is fixedly connected to one end of the force sensor 6, the thrust piece needle bearing 7 is sleeved on a position of the feed screw 9 close to the force sensor 6, and the dial indicator 4 is fixed on the dial indicator support seat 5, the measuring bar of the dial indicator 4 is connected with the position calibration screw 8, the position calibration screw 8 is fixed with the feed screw 9, the other end of the force sensor 6 is connected with the test ejector rod 3, the testing device comprises a second fixing seat 12 and a component to be tested, which is fixed on the second fixing seat 12, the second fixing seat 12 is fixed on the base 1, and the component to be tested is located on one side of the test ejector rod 3.
Specifically, the base 1 is an installation base of the whole equipment, the feeding hand wheel 11 can drive the feeding screw rod 9 to move back and forth when rotating, the feeding screw rod 9 can drive the force sensor 6 fixedly connected with the feeding screw rod 9 and the testing ejector rod 3 fixedly connected with the force sensor 6 to move when moving, and the dial indicator 4 can read the moving distance of the feeding screw rod 9; the test ejector rod 3 is used for ejecting the component to be tested, and then parameters to be tested of the first proportional electromagnet can be measured and calculated through the reading of the dial indicator 3 and the reading of the force sensor 6. Thus, the present invention provides embodiments of a plurality of first proportional electromagnet detection apparatus.
With continuing reference to fig. 1 and fig. 2, in a first embodiment of the detection apparatus of the proportional servo valve, the detection apparatus is configured to perform electromagnet zero position detection of a first proportional electromagnet and gain calibration of a proportional solenoid valve, the component to be tested includes a first proportional electromagnet 13, a first displacement sensor 14, and a first percentile meter (not shown in the figure), the first proportional electromagnet 13 is fixed on the second fixing base 12, the first percentile meter is connected to the first displacement sensor 14, the first displacement sensor 14 is further connected to a thrust output rod of the first proportional electromagnet 13, and the thrust output rod of the first proportional electromagnet 13 can be pushed by the test push rod 3.
Preferably, the first displacement sensor 14 is an LVDT displacement sensor, which has high sensitivity, a wide linear range, and a recoverable null position.
Preferably, in the first embodiment of the detection apparatus for the proportional servo valve, the detection apparatus further includes a control box (not shown), an LVDT analysis plate (not shown) and a multimeter (not shown), the control box is provided with a power supply, the power supply is connected to a power line of the first proportional electromagnet, the LVDT analysis plate is connected to the first displacement sensor, and the multimeter is used for measuring a feedback voltage of the control box.
In this embodiment, when the detection device of the proportional servo valve detects, the first proportional electromagnet 13 is installed on the second fixed seat 12, then the power supply in the control box is connected with the power line of the first proportional electromagnet 13, the LVDT analysis plate is connected with the LVDT displacement sensor 14, and correct line connection and normal line connection are ensured; then, power is supplied to a power supply of the control box, the feeding hand wheel 11 is shaken clockwise at the moment, the feeding hand wheel 11 drives the feeding screw rod 9 to move towards the direction close to the first proportional electromagnet 13 when shaking, the test ejector rod 3 gradually approaches to the thrust output rod of the first proportional electromagnet 13 at the moment, a tester observes the force reading in the force sensor 6, when the force reading in the force sensor 6 exceeds zero, the test ejector rod 3 is abutted against the thrust output rod of the first proportional electromagnet, an operator immediately stops shaking the feeding hand wheel 11 and stirs the dial plate of the dial indicator 4, so that the reading of the dial indicator 4 is zero; at the moment, the operator finishes debugging the detection equipment, parameter testing can be started, the operator continues to shake the feeding hand wheel 11 clockwise, the testing ejector rod 3 pushes the thrust output rod of the first proportional electromagnet 13 to move backwards, and at the moment, the reading of the first dial indicator is observed to move to the designed zero position, so that the zero position testing of the first proportional electromagnet is finished; at the moment, a multimeter is used for measuring the feedback voltage of a power supply of the control box, meanwhile, a zero position adjustment potentiometer of the LVDT analysis plate is adjusted, the zero position voltage is calibrated to be 0V (the voltage type is 0V voltage, the current type (4-20 mA) is 12mA), the dial indicator 4 is calibrated to be 0V voltage again, the current type (4-20 mA) is 12mA), the first dial indicator is calibrated to be zero again (the position of the test ejector rod 3 is ensured to be unchanged at the moment), the feeding hand wheel 11 is continuously shaken clockwise, the reading of the first dial indicator is observed, the gain adjustment potentiometer of the LVDT analysis plate is adjusted after the reading of the first dial indicator is moved to a valve core design stroke position and stopped, the feedback voltage of the multimeter is observed, and when the reading is adjusted to be-10V, the gain calibration of the proportional servo valve is completed.
Referring to fig. 3 and 4, in a second embodiment of the detection apparatus of the proportional servo valve, the detection apparatus is used for performing zero static friction force test of the valve sleeve and the valve core, the component to be tested includes a support rod 15, a valve body 16, a valve sleeve 17, a valve core 18 and a second dial indicator (not shown in the figure), the support rod 15 is fixed on the second fixing seat 12, the valve sleeve 17 is fixed on the support rod 15, the valve body 16 is fixedly connected with the valve sleeve 17, the valve core 18 is located in the valve sleeve 17 and can be pushed by the test push rod 3 to move in the valve sleeve 17, and the valve core 18 is further connected with the second dial indicator.
In this embodiment, when the detection device of the proportional servo valve detects, firstly, the valve body 16, the valve sleeve 17 and the valve core 18 are assembled and mounted on the support rod 15, then the valve core 18 is manually pushed to a reference surface position (a position shown in fig. 3 and 4) of the top end of the valve sleeve 17, the feeding hand wheel 11 is slowly shaken to make the test push rod 3 approach to the top end of the valve core 18, and the test push rod stops until contact is confirmed (the judgment method for confirming contact is similar to that in the first embodiment, specifically, the force reading in the force sensor 6 is observed, and when the force reading in the force sensor 6 exceeds zero, the test push rod 3 is indicated to be in contact with the top end of the valve core 18); then an operator dials the dial plate of the dial indicator 4, after the reading of the dial indicator 4 is reset to zero, the feeding hand wheel 11 is continuously and clockwise shaken to push the valve core 18 to move backwards, and meanwhile, the reading of the second dial indicator is observed to gradually move to the design zero position, and through observing the reading of the dial indicator 4, when the valve core 18 is close to the design zero position, the reading of the force sensor 6 is observed, so that the maximum dynamic friction force of the zero positions of the valve sleeve and the valve core is monitored.
Referring to fig. 5 and 6, in a third embodiment of the detection apparatus of the proportional servo valve, the detection apparatus is configured to perform a spring stiffness and spring force linearity test, the component to be tested includes a spring seat 19, a first spring 20, a spring pressing rod 21, a test mounting seat 22, and a third dial indicator (not shown in the figure), the spring seat 19 is fixed on the second fixing seat 12, the first spring 20 and the test mounting seat 20 are both fixed on the spring seat 19, the spring pressing rod 21 is mounted on the test mounting seat 22 and slidably connected to the test mounting seat 22, the spring pressing rod 21 can be pushed by the test ejector rod 3 to press the first spring 20, and the first spring 20 is further connected to the third dial indicator.
In this embodiment, when the detection device of the proportional servo valve detects, an operator first installs the first spring 20 on the spring seat 19, then adjusts the zero position of the third dial indicator to the free length of the first spring 20, slowly shakes the feeding hand wheel 11 to enable the test ejector rod 3 to approach the spring pressing rod 21 until contact is confirmed and then stops (the judgment method for confirming contact is similar to that in the first embodiment, specifically, the judgment method for observing the force reading in the force sensor 6 is similar to that in the first embodiment, when the force reading in the force sensor 6 exceeds zero, the test ejector rod 3 is in contact with the spring pressing rod 21), then the operator dials the dial plate of the dial indicator 4, after the reading of the dial indicator 4 is reset to zero, continues to clockwise shake the feeding hand wheel 11 to push the spring pressing rod 21 to press the first spring 20, and simultaneously observes the reading of the third dial indicator to gradually move to the designed zero position, by observing the reading of the dial indicator 4, when the first spring 20 is close to the design zero position, the reading of the force sensor 6 is observed, and the spring stiffness and the linearity of the spring force are monitored.
Referring to fig. 7 and 8, in a fourth embodiment of the detection device of the proportional servo valve, the detection device is configured to perform a dynamic response test on a spring, the component to be tested includes a second spring 23, a second proportional electromagnet 24, a second displacement sensor 25, and a fourth dial indicator (not shown in the figure), the second proportional electromagnet 24 is fixed on the second fixing seat 12, the second displacement sensor 25 is connected to a thrust output rod of the second proportional electromagnet 24, the second spring 23 is fixed on the thrust output rod of the second proportional electromagnet 24 and is located between the thrust output rod of the second proportional electromagnet 24 and the test carrier rod 3, the second spring 23 can be pressed by the test carrier rod 3, and the second spring 23 is further connected to the fourth dial indicator.
Preferably, the second displacement sensor 25 is an LVDT displacement sensor, which has high sensitivity, a wide linear range, and a recoverable null position.
Preferably, in a fourth embodiment of the detection device of the proportional servo valve, the detection device further comprises an oscilloscope (not shown in the figure), which is electrically connected to the second proportional electromagnet 24.
In this embodiment, when the detection device of the proportional servo valve detects, an operator firstly installs the second spring 23 in place, electrically connects the oscilloscope with the second proportional electromagnet 24 and ensures correct connection, then slowly shakes the feeding hand wheel 11, when the force reading in the force sensor 6 exceeds zero, it indicates that the testing ejector rod 3 is in contact with the second spring 23, at this time, the dial of the dial indicator 4 is shifted, after the reading of the dial indicator 4 is reset to zero, the feeding hand wheel 11 is continuously shaken clockwise to push the second spring to compress, and at the same time, the reading of the fourth dial indicator is observed, so that the fourth dial indicator gradually moves to a designed zero position; during testing, the second proportional electromagnet 24 plays a driving role, sinusoidal working current is input into the second proportional electromagnet 24 during testing, the second spring 23 follows up, signals analyzed by the force sensor 6 are connected with an oscilloscope at the moment, then the current sweep frequency input into the second proportional electromagnet is continuously increased, the following amplitude frequency and the phase frequency of the spring force can be determined through the oscilloscope, and therefore the dynamic response test of the spring is completed.
In summary, the detection apparatus for the proportional servo valve provided by the present invention includes a base, a first fixing seat, a testing ejector rod, a dial indicator supporting seat, a force sensor, a needle roller bearing for a thrust piece, a position calibration screw, a feeding screw, a screw supporting seat, a feeding hand wheel and a testing device, wherein the first fixing seat is fixed on the base, the dial indicator supporting seat and the screw supporting seat are both installed on the first fixing seat, the feeding hand wheel is connected with one end of the feeding screw, the other end of the feeding screw passes through the screw supporting seat and is fixedly connected with one end of the force sensor, the needle roller bearing is sleeved at a position of the feeding screw close to the force sensor, the dial indicator is fixed on the dial indicator supporting seat, a measuring rod of the dial indicator is connected with the position calibration screw, and the position calibration screw is fixed with the feeding screw, the other end of the force sensor is connected with the test ejector rod, the test device comprises a second fixing seat and a component to be tested, the component to be tested is fixed on the second fixing seat, the second fixing seat is fixed on the base, and the component to be tested is located on one side of the test ejector rod. The invention can detect various parameters of the proportional servo valve, and effectively improves the detection precision, the detection efficiency and the matching qualification rate.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. The detection equipment of the proportional servo valve is characterized by comprising a base, a first fixing seat, a test ejector rod, a dial indicator supporting seat, a force sensor, a thrust piece needle bearing, a position calibration screw, a feeding screw rod, a screw rod supporting seat, a feeding hand wheel and a testing device, wherein the first fixing seat is fixed on the base, the dial indicator supporting seat and the screw rod supporting seat are both arranged on the first fixing seat, the feeding hand wheel is connected with one end of the feeding screw rod, the other end of the feeding screw rod penetrates through the screw rod supporting seat and is fixedly connected with one end of the force sensor, the thrust piece bearing is sleeved at the position of the feeding screw rod close to the force sensor, the dial indicator is fixed on the dial indicator supporting seat, a measuring rod of the dial indicator is connected with the position calibration screw rod, and the position calibration screw rod is fixed with the feeding screw rod, the other end of the force sensor is connected with the test ejector rod, the test device comprises a second fixing seat and a component to be tested, the component to be tested is fixed on the second fixing seat, the second fixing seat is fixed on the base, and the component to be tested is located on one side of the test ejector rod.
2. The detection device of the proportional servo valve as claimed in claim 1, wherein the component to be tested comprises a first proportional electromagnet, a first displacement sensor and a first dial indicator, the first proportional electromagnet is fixed on the second fixed seat, the first dial indicator is connected with the first displacement sensor, the first displacement sensor is further connected with a thrust output rod of the first proportional electromagnet, and the thrust output rod of the first proportional electromagnet can be pushed by the test ejector rod.
3. The proportional servo valve sensing apparatus of claim 2, wherein the first displacement sensor is an LVDT displacement sensor.
4. The proportional servo valve detection apparatus of claim 3, further comprising a control box, an LVDT analysis plate and a multimeter, wherein a power supply is disposed in the control box, the power supply is connected to a power line of the first proportional electromagnet, the LVDT analysis plate is connected to the first displacement sensor, and the multimeter is used for measuring a feedback voltage of the control box.
5. The detection device of the proportional servo valve as claimed in claim 1, wherein the component to be tested comprises a support rod, a valve body, a valve sleeve, a valve core and a second dial indicator, the support rod is fixed on the second fixing seat, the valve sleeve is fixed on the support rod, the valve body is fixedly connected with the valve sleeve, the valve core is located in the valve sleeve and can be pushed by the test ejector rod to move in the valve sleeve, and the valve core is further connected with the second dial indicator.
6. The detection device of the proportional servo valve according to claim 1, wherein the component to be tested comprises a spring seat, a first spring, a spring pressing rod, a test mounting seat and a third dial indicator, the spring seat is fixed on the second fixing seat, the first spring and the test mounting seat are both fixed on the spring seat, the spring pressing rod is mounted on the test mounting seat and is in sliding connection with the test mounting seat, the spring pressing rod can be pushed by the test ejector rod to extrude the first spring, and the first spring is further connected with the third dial indicator.
7. The detection device of the proportional servo valve according to claim 1, wherein the component to be tested comprises a second spring, a second proportional electromagnet, a second displacement sensor and a fourth dial indicator, the second proportional electromagnet is fixed on the second fixing seat, the second displacement sensor is connected with a thrust output rod of the second proportional electromagnet, the second spring is fixed on the thrust output rod of the second proportional electromagnet and located between the thrust output rod of the second proportional electromagnet and a test ejector rod, the second spring can be extruded by the test ejector rod, and the second spring is further connected with the fourth dial indicator.
8. The proportional servo valve sensing apparatus of claim 7, wherein the second displacement sensor is an LVDT displacement sensor.
9. The apparatus for testing a proportional servo valve of claim 7, further comprising an oscilloscope electrically connected to the second proportional solenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088595.XA CN110779576A (en) | 2019-11-08 | 2019-11-08 | Detection equipment for proportional servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088595.XA CN110779576A (en) | 2019-11-08 | 2019-11-08 | Detection equipment for proportional servo valve |
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| CN110779576A true CN110779576A (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911088595.XA Pending CN110779576A (en) | 2019-11-08 | 2019-11-08 | Detection equipment for proportional servo valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425873A (en) * | 2022-08-30 | 2022-12-02 | 上海衡拓液压控制技术有限公司 | Zero position adjusting control device of direct-acting linear force motor |
-
2019
- 2019-11-08 CN CN201911088595.XA patent/CN110779576A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425873A (en) * | 2022-08-30 | 2022-12-02 | 上海衡拓液压控制技术有限公司 | Zero position adjusting control device of direct-acting linear force motor |
| CN115425873B (en) * | 2022-08-30 | 2024-04-05 | 上海衡拓液压控制技术有限公司 | Zero position adjusting and controlling device of direct-acting linear force motor |
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