CN109580139B - Servo valve armature subassembly comprehensive rigidity testing arrangement - Google Patents
Servo valve armature subassembly comprehensive rigidity testing arrangement Download PDFInfo
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- CN109580139B CN109580139B CN201811533027.1A CN201811533027A CN109580139B CN 109580139 B CN109580139 B CN 109580139B CN 201811533027 A CN201811533027 A CN 201811533027A CN 109580139 B CN109580139 B CN 109580139B
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- armature
- baffle
- displacement detection
- displacement
- feedback rod
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
Abstract
The invention discloses a comprehensive rigidity testing device for an armature component of a servo valve, which comprises: the device comprises an armature component positioning clamp provided with an armature component to be detected, armature component force loading equipment, armature displacement detection equipment, baffle displacement detection equipment, feedback rod displacement loading equipment and feedback rod displacement detection equipment; the armature component force loading device is used for applying force load to one end of an armature of the armature component; the armature displacement detection equipment is used for carrying out displacement detection on the other end of the armature component to obtain displacement data of the armature; the baffle displacement detection equipment is used for carrying out displacement detection on the baffle of the armature assembly to obtain the displacement data of the baffle; the feedback rod displacement loading device is used for applying force load to the upper end of the feedback rod, and the feedback rod displacement detection device is used for carrying out displacement detection on the ball head at the lower end of the feedback rod to obtain displacement data of the ball head. The invention has the advantages of simple test process and high test data precision.
Description
Technical Field
The invention relates to the technical field of servo valves, in particular to a comprehensive rigidity testing device for an armature component of a servo valve.
Background
In recent years, the application and development of electro-hydraulic servo control technology is considered as one of the important marks for measuring the national industrial manufacturing level and the modern industrial development, and the electro-hydraulic servo control technology has wide application in precision machine tools, engineering machinery, and host products of metallurgy, mines, petrochemicals, electrochemical products, ships, military industry and the like. The electro-hydraulic servo valve is used as a key element in an electro-hydraulic servo control system, and the armature component is the most key motion element in the electro-hydraulic servo valve, so that the performance of the electro-hydraulic servo valve and the performance of the whole electro-hydraulic servo system are directly restricted. At present, the domestic method for measuring the comprehensive rigidity of the armature component of the servo valve mainly comprises two methods:
(1) knocking method: the tapping method is generally realized by adopting a tapping method for one end of the armature component, the comprehensive rigidity of the armature component measured by adopting the method has the defects of data dispersion, large error, poor consistency and the like, and in addition, the measuring method is influenced by more factors and cannot realize high-precision measurement.
(2) A resonance method: the resonance method is used for testing in a mode of inputting voltage or current to the torque motor, the comprehensive rigidity of the armature component is indirectly reversely pushed through the method, the testing process is complex by adopting the method, the testing is carried out in a mode of installing the armature component into the torque motor component through an electric signal, the testing efficiency is low, and rapid quantitative detection cannot be realized.
The two working modes have high operation difficulty in practical application, complex testing process and more error influence factors, and are difficult to meet the testing requirements of high precision and high efficiency of the armature component of the servo valve.
Disclosure of Invention
The invention aims to provide a comprehensive rigidity testing device for a servo valve armature component, which adopts a mode of directly carrying out analog loading on the servo valve armature component to carry out measurement, and achieves the purposes of simple testing process, convenient operation, high testing data precision, good consistency, high reliability and small testing error influence.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a servo valve armature assembly comprehensive rigidity testing device comprises: the device comprises an armature component positioning clamp provided with an armature component to be detected, armature component force loading equipment, armature displacement detection equipment, baffle displacement detection equipment, feedback rod displacement loading equipment and feedback rod displacement detection equipment; the armature assembly force loading device applies a force load to one end of an armature of the armature assembly; the armature displacement detection equipment is used for carrying out displacement detection on the other end of the armature component to obtain displacement data of the armature; the baffle displacement detection equipment is used for carrying out displacement detection on the baffle of the armature assembly to obtain displacement data of the baffle; the feedback rod displacement loading device is used for applying force load to the upper end of the feedback rod, and the feedback rod displacement detection device is used for carrying out displacement detection on a ball head at the lower end of the feedback rod to obtain displacement data of the ball head.
Further, the method also comprises the following steps: an armature assembly force loading adjustment device for adjusting a position of the armature assembly force loading device.
Further, the method also comprises the following steps: an armature displacement detection adjustment device for adjusting a position of the armature displacement detection device.
Further, the method also comprises the following steps: and the baffle displacement detection and adjustment equipment is used for adjusting the measurement position of the baffle displacement detection equipment, and the baffle displacement detection equipment is close to the lower end of the baffle, so that the lower end of the baffle of the armature component can be subjected to displacement detection.
Further, the method also comprises the following steps: a feedback rod displacement loading adjustment device for adjusting a force application position of the feedback rod displacement loading device.
And further, the computer test control system is used for collecting and storing the displacement data of the armature, the baffle and the ball head.
Further, the armature assembly further comprises: a tube spring; the baffle is sleeved on the feedback rod, the armature and the tube spring are sequentially sleeved on the baffle, the armature is located above the tube spring, the baffle is located at the upper end of the feedback rod, the lower end of the feedback rod is exposed outside the tube spring and the baffle, and the end part of the lower end of the feedback rod is connected with the ball head.
The invention has the following effects:
the invention adopts a mode of directly carrying out analog loading on the armature component of the servo valve for measurement, and has simple test process, good operability and good consistency of test data. The adjusting device can accurately adjust the force loading position and the displacement loading position, and the accurate loading of the displacement and the force is realized. The armature component is directly separated from the servo valve, so that the comprehensive rigidity of the armature component is independently detected, the comprehensive performance of the armature component is easy to master, and a quantitative reference basis is provided for realizing interchangeability and modular design of the armature component of the servo valve.
Drawings
Fig. 1 is a schematic structural diagram of a comprehensive rigidity testing device for an armature assembly of a servo valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an armature assembly of a servo valve to be tested according to an embodiment of the present invention.
Detailed Description
The present invention will now be further described by way of the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.
As shown in fig. 1, the present embodiment provides a comprehensive rigidity testing apparatus for an armature assembly of a servo valve, which is used for simulating the servo valve to test the armature assembly in a normal operating state, and the testing apparatus includes: the device comprises an armature component positioning clamp 2, an armature component force loading device 4, an armature component force loading adjusting device 5, an armature displacement detecting device 6, an armature displacement detecting adjusting device 7, a baffle displacement detecting device 10, a baffle displacement detecting adjusting device 11, a feedback rod displacement loading device 8, a feedback rod displacement loading adjusting device 9, a feedback rod displacement detecting device 1 and computer test control equipment respectively connected with the armature component force loading device 4, the armature component force loading adjusting device 5, the armature displacement detecting device 6, the armature displacement detecting adjusting device 7, the baffle displacement detecting device 10, the baffle displacement detecting adjusting device 11, the feedback rod displacement loading device 8, the feedback rod displacement loading adjusting device 9 and the feedback rod displacement detecting device 1.
With continued reference to fig. 1, before testing the armature assembly, the armature assembly 3 to be tested needs to be disposed on the armature assembly positioning jig 2 and clamped by the armature assembly positioning jig 2.
As shown in fig. 2, the armature assembly under test 3 further includes: an armature 30, a baffle 31, a tube spring 32, and a feedback rod 33. The baffle 31 is sleeved on the feedback rod 33, the pipe spring 32 is sleeved on the baffle 31, the armature 30 is positioned above the pipe spring 32, the baffle 31 is positioned at the upper end of the feedback rod 33, and the lower end of the feedback rod 33 is exposed outside the pipe spring 32 and the baffle 31 and is provided with a ball head.
Referring to fig. 1 again, since the normal energization condition of the servo valve is the same as the actual load condition on the armature assembly, a force can be applied to the armature assembly to simulate the normal energization condition of the servo valve, and further determine the comprehensive stiffness value of the armature assembly in the working state.
The armature assembly force loading adjusting device 5 is used for adjusting the position of the armature assembly force loading device 4, so that the armature assembly force loading device 4 is aligned with any one end of the armature 30 of the armature assembly 3, and the armature assembly force loading device 4 applies force load to any one end of the armature 30 of the armature assembly 3.
The armature displacement detection and adjustment device 7 is used for adjusting the position of the armature displacement detection device 6, the armature displacement detection device 6 is close to the other end of the armature 30, so that the other end of the armature 30 of the armature component 3 can be subjected to displacement detection, and the armature displacement detection device 6 is used for performing displacement detection on the other end of the armature 30 of the armature component 3 loaded with a force load, so as to obtain displacement data of the armature 30. The displacement direction of the armature is the horizontal direction.
The baffle displacement detection and adjustment device 11 is used for adjusting the measurement position of the baffle displacement detection device 10, the baffle displacement detection device 10 is close to the lower end of the baffle 31, so that the lower end of the baffle 31 of the armature assembly 3 can be subjected to displacement detection, and the baffle displacement detection device 10 is used for performing displacement detection on the baffle 31 of the armature assembly 3 loaded by a force load; displacement data of the baffle 31 is obtained.
The feedback rod displacement loading adjusting device 9 is used for adjusting the force application position of the feedback rod displacement loading device 8, the feedback rod displacement loading device 8 is used for applying a force load to the upper end of the feedback rod 33, and the feedback rod displacement detecting device 1 is used for detecting the displacement of the ball head at the lower end of the feedback rod 33 to obtain the displacement data of the ball head. The moving direction of the ball head is vertical.
The computer test control system is mainly used for collecting, processing, storing and printing the displacement data of the armature, the baffle and the ball head obtained in the test process.
In conclusion, the testing device and the testing method are used for directly testing the normal power-on working condition of the servo valve, the testing device and the testing method are the same as the actual working condition of the armature component, the comprehensive rigidity value of the armature component in the working state can be accurately measured, the interchangeability and the modular design of the torque motor can be favorably realized, and the testing device and the testing method are particularly suitable for occasions with high matching requirements of the torque motor of the servo valve. The invention adopts a mode of directly carrying out analog loading on the armature component of the servo valve for measurement, and has simple test process, good operability and good consistency of test data. The adjusting device can accurately adjust the force loading position and the displacement loading position, and the accurate loading of the displacement and the force is realized. The armature component is directly separated from the servo valve, so that the comprehensive rigidity of the armature component is independently detected, the comprehensive performance of the armature component is easy to master, and a quantitative reference basis is provided for realizing interchangeability and modular design of the armature component of the servo valve.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (7)
1. A servo valve armature assembly comprehensive rigidity testing device is characterized by comprising:
the device comprises an armature component positioning clamp provided with an armature component to be detected, armature component force loading equipment, armature displacement detection equipment, baffle displacement detection equipment, feedback rod displacement loading equipment and feedback rod displacement detection equipment;
the armature assembly force loading device applies a force load to one end of an armature of the armature assembly;
the armature displacement detection equipment is used for carrying out displacement detection on the other end of the armature component to obtain displacement data of the armature;
the baffle displacement detection equipment is used for carrying out displacement detection on the baffle of the armature assembly to obtain displacement data of the baffle;
the feedback rod displacement loading device is used for applying force load to the upper end of the feedback rod, and the feedback rod displacement detection device is used for carrying out displacement detection on a ball head at the lower end of the feedback rod to obtain displacement data of the ball head.
2. The servo valve armature assembly integrated stiffness testing apparatus of claim 1, further comprising: an armature assembly force loading adjustment device for adjusting a position of the armature assembly force loading device.
3. The servo valve armature assembly integrated stiffness testing apparatus of claim 2, further comprising: an armature displacement detection adjustment device for adjusting a position of the armature displacement detection device.
4. The servo valve armature assembly integrated stiffness testing apparatus of claim 3, further comprising: and the baffle displacement detection and adjustment equipment is used for adjusting the measurement position of the baffle displacement detection equipment, and the baffle displacement detection equipment is close to the lower end of the baffle, so that the lower end of the baffle of the armature component can be subjected to displacement detection.
5. The servo valve armature assembly comprehensive rigidity testing device as recited in any one of claims 1 to 4, further comprising: a feedback rod displacement loading adjustment device for adjusting a force application position of the feedback rod displacement loading device.
6. The servo valve armature assembly integrated stiffness testing apparatus of claim 5, further comprising: and the computer test control system is used for acquiring and storing the displacement data of the armature, the baffle and the ball head.
7. The servo valve armature assembly integrated stiffness testing apparatus of claim 6 wherein the armature assembly further comprises: a tube spring; the baffle is sleeved on the feedback rod, the armature and the tube spring are sequentially sleeved on the baffle, the armature is located above the tube spring, the baffle is located at the upper end of the feedback rod, the lower end of the feedback rod is exposed outside the tube spring and the baffle, and the end part of the lower end of the feedback rod is connected with the ball head.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811533027.1A CN109580139B (en) | 2018-12-14 | 2018-12-14 | Servo valve armature subassembly comprehensive rigidity testing arrangement |
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| CN201811533027.1A CN109580139B (en) | 2018-12-14 | 2018-12-14 | Servo valve armature subassembly comprehensive rigidity testing arrangement |
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| CN109580139A CN109580139A (en) | 2019-04-05 |
| CN109580139B true CN109580139B (en) | 2020-09-01 |
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| CN110057572B (en) * | 2019-04-26 | 2020-09-08 | 安徽万荣航天设备有限公司 | Servo valve armature subassembly comprehensive rigidity testing arrangement |
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| KR101062230B1 (en) * | 2007-12-03 | 2011-09-06 | 국방과학연구소 | Dynamic stiffness measuring device and its control method |
| CN101446532A (en) * | 2008-12-19 | 2009-06-03 | 上海诺玛液压系统有限公司 | Servo valve armature component suspension stiffness testing device |
| CN101446533A (en) * | 2008-12-19 | 2009-06-03 | 上海诺玛液压系统有限公司 | Tool used for measuring electro-hydraulic servo valve tube spring stiffness |
| FR3051027B1 (en) * | 2016-05-03 | 2019-06-14 | Zodiac Hydraulics | SERVOVALVE PILOTAGE STAGE, WHICH CAN SERVE AS A FIRST FLOOR IN A SERVOVALVE WITH TWO FLOORS. |
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Non-Patent Citations (1)
| Title |
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| 刘建勇等.反馈杆精密微细电火花加工工艺技术研究.《第16届全国特种加工学术会议论文集(上)》.2016, * |
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