CN112781850A - Method and device for adjusting and detecting guide cover core valve of oil pressure shock absorber - Google Patents
Method and device for adjusting and detecting guide cover core valve of oil pressure shock absorber Download PDFInfo
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- CN112781850A CN112781850A CN202011624801.7A CN202011624801A CN112781850A CN 112781850 A CN112781850 A CN 112781850A CN 202011624801 A CN202011624801 A CN 202011624801A CN 112781850 A CN112781850 A CN 112781850A
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- 230000035939 shock Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003825 pressing Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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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
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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 a method and a device for adjusting and detecting a guide cover core valve of an oil pressure shock absorber, relates to the technical field of oil pressure shock absorbers for railway vehicles, and can meet the requirement of quickly and accurately adjusting a valve system spring. The invention discloses a method for adjusting and detecting a guide cover core valve of an oil pressure shock absorber, which comprises the following steps of: the valve hole of the guide cover is towards the hole of the direction of the pressure cylinder, the end face is compressed through the pressure measuring pipe to seal the valve hole, then the valve system is tightened, at the moment, the air source is opened to pressurize, the required pressure is adjusted through the precision barometer, the pressure is maintained, after the pressure is confirmed to be stable, the valve spring of the guide cover is adjusted under certain pressure through adjusting the adjusting screw of the valve core of the guide cover, the gas pressure is changed, the change of the gas pressure can be reflected on the barometer, when the specified pressure drop value is reached, the gas pressure can be judged to be consistent with the spring force, and the measured spring force value is the force value to be adjusted.
Description
Technical Field
The invention relates to the technical field of oil pressure absorbers for railway vehicles, in particular to a method and a device for adjusting and detecting a guide cover core valve of an oil pressure absorber.
Background
At present, the existing oil pressure shock absorber for the railway vehicle mainly uses oil as a damping medium, the oil generates damping force mainly through the throttling action of a valve system designed in the shock absorber in the motion process of the shock absorber, and simultaneously absorbs vibration energy, and the generated heat is transferred to an outer cylinder through the oil and is radiated to air.
Among the one-way action shock absorber structures, the more adopted structure is that an adjusting core valve is adjusted on a guide cover, and the structure is divided into two conditions that the valve system of the guide cover is externally arranged and adjustable and the valve system of the guide cover is internally arranged.
However, the inventor of the present application finds that, since the valve system is externally adjustable, a passage for oil leakage is easy to exist; although the valve system of the guide cover is internally provided with an adjustable valve system, the leakage channel does not exist, but the spring force adjustment of the valve system has the defects of narrow adjustable position, complex adjustment, long adjustment time and the like because the valve system is arranged on the guide cover.
Disclosure of Invention
The invention aims to provide a method and a device for adjusting and detecting a guide cover core valve of an oil pressure shock absorber, which can adjust a built-in adjustable structure of a guide cover valve system by adopting a pneumatic pressure measuring method and judge a force value generated by a valve system spring through precise gas pressure change so as to meet the requirement of quickly and accurately adjusting the valve system spring.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for adjusting and detecting a guide cover core valve of an oil pressure shock absorber comprises the following steps: the valve hole of the guide cover is towards the hole of the direction of the pressure cylinder, the end face is compressed through the pressure measuring pipe to seal the valve hole, then the valve system is tightened, at the moment, the air source is opened to pressurize, the required pressure is adjusted through the precision barometer, the pressure is maintained, after the pressure is confirmed to be stable, the valve spring of the guide cover is adjusted under certain pressure through adjusting the adjusting screw of the valve core of the guide cover, the gas pressure is changed, the change of the gas pressure can be reflected on the barometer, when the specified pressure drop value is reached, the gas pressure can be judged to be consistent with the spring force, and the measured spring force value is the force value to be adjusted.
In practical application, the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber specifically comprises the following steps:
step S1, preassembling a guide cover assembly to be adjusted by the core valve spring, and locking an adjusting screw to the deepest position to compress the core valve spring to the tightest position;
step S2, installing the guide cover assembly on a positioning fixture, and after the guide cover assembly is installed in place, pressing the pressure measuring pipe into a horizontal hole formed by the guide cover and a core valve spring in a tightly-tensioned mode by using a tensioning pressing plate;
and step S3, opening the air valve, adjusting the precision digital display air pressure gauge to a certain pressure, turning the air pressure gauge to a pressure maintaining state, adjusting the adjusting screw at the moment, and when the air pressure is adjusted to be just reduced, indicating that the force of the air pressure pushing the spring is formed, wherein the thrust generated by the air pressure is consistent with the spring force, and judging the force value of the spring, wherein the force value is the force value of the shock absorber which needs to be opened at the speed point.
Compared with the prior art, the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber has the following advantages:
in the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber, because the end face of the guide cover valve hole facing to the direction hole of the pressure cylinder is tightly pressed by a pressure measuring pipe to seal the guide cover valve hole, then the valve system is tightened, at the moment, an air source is opened to pressurize, the required pressure is adjusted by a precision barometer, pressure is maintained, after the pressure is confirmed to be stable, a core valve spring is pushed away under certain pressure along with the adjustment of the adjusting screw, so that the gas pressure changes, the change of the gas pressure can be reflected on the barometer, when a specified pressure drop value is reached, the gas pressure can be judged to be consistent with the spring force, and the measured spring force value is the force value to be adjusted, therefore, the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber can adopt a pneumatic pressure measuring method to adjust the built-in adjustable structure of the guide cover valve system, the force value generated by the valve system spring is judged through the change of the precise gas pressure, so that the requirement of quickly and accurately adjusting the valve system spring is met; in addition, the adjusting and detecting method is visual and accurate, and is beneficial to improving the product percent of pass and the production efficiency.
A kind of oil hydraulic shock absorber leads the cover core valve to regulate the checkout gear, including: the positioning fixture is used for installing the guide cover assembly, the guide cover assembly comprises a guide cover and a core valve spring arranged in the guide cover, an adjusting screw is arranged at one end of the core valve spring, a pressure measuring pipe is arranged at the other end of the core valve spring and tightly pressed in the guide cover and the horizontal hole communicated with the core valve spring through a tensioning pressing plate, and the other end of the pressure measuring pipe is connected with a precision digital display barometer.
Compared with the prior art, the oil pressure damper guide cover core valve adjusting and detecting device and the oil pressure damper guide cover core valve adjusting and detecting method have the same advantages, and are not described again.
Drawings
Fig. 1 is a schematic structural diagram of a guide cover core valve adjustment detection device of an oil pressure shock absorber according to an embodiment of the present invention.
Reference numerals:
1-positioning a fixture; 2-a guide cover assembly; 21-a guide cover; 22-core valve spring; 3-adjusting the screw; 4-piezometric tube; 5, tensioning the pressure plate; 6-precision digital display barometer.
Detailed Description
For the convenience of understanding, the following describes in detail the method and apparatus for detecting the valve adjustment of the guide cover core of the oil pressure shock absorber according to the embodiments of the present invention, with reference to the accompanying drawings.
The embodiment of the invention provides a method for adjusting and detecting a guide cover core valve of an oil pressure shock absorber, which comprises the following steps:
the valve hole of the guide cover is towards the hole of the direction of the pressure cylinder, the end face is compressed through the pressure measuring pipe to seal the valve hole, then the valve system is tightened, at the moment, the air source is opened to pressurize, the required pressure is adjusted through the precision barometer, the pressure is maintained, after the pressure is confirmed to be stable, the valve spring of the guide cover is adjusted under certain pressure through adjusting the adjusting screw of the valve core of the guide cover, the gas pressure is changed, the change of the gas pressure can be reflected on the barometer, when the specified pressure drop value is reached, the gas pressure can be judged to be consistent with the spring force, and the measured spring force value is the force value to be adjusted.
Compared with the prior art, the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber has the following advantages that:
in the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber provided by the embodiment of the invention, because the end face of the guide cover valve hole facing to the direction hole of the pressure cylinder is pressed by the pressure measuring pipe to seal the guide cover valve hole, then the valve system is tightened, at the moment, the air source is opened to pressurize, the required pressure is adjusted by the precision air pressure meter, the pressure is maintained, after the pressure is confirmed to be stable, the core valve spring is pushed open under a certain pressure along with the adjustment of the air pressure by the adjusting screw, so that the air pressure changes, the change of the air pressure can be reflected on the air pressure meter, when the specified pressure drop value is reached, the consistency between the air pressure and the spring force can be judged, and the measured spring force value is the force value required to be adjusted, therefore, the method for adjusting and detecting the guide cover core valve of the oil pressure shock absorber provided by the embodiment of the invention can adjust the built-in adjustable structure of the, the force value generated by the valve system spring is judged through the change of the precise gas pressure, so that the requirement of quickly and accurately adjusting the valve system spring is met; in addition, the adjusting and detecting method is visual and accurate, and is beneficial to improving the product percent of pass and the production efficiency.
In practical application, with reference to fig. 1, the method for detecting adjustment of the guide cover core of the oil pressure shock absorber provided by the embodiment of the invention specifically includes the following steps:
step S1, preassembling the guide cover assembly 2 to be adjusted by the core valve spring, and locking the adjusting screw 3 to the deepest position to compress the core valve spring 22 to the tightest position;
step S2, mounting the guide cover assembly 2 on the positioning fixture 1, and after the guide cover assembly is mounted in place, pressing the pressure measuring pipe 4 into a horizontal hole communicating the guide cover 21 and the core valve spring 22 by using a tensioning pressing plate 5;
step S3, the air valve is opened, the precision digital display air pressure gauge 6 is adjusted to a certain pressure, the air pressure gauge can be switched to a pressure maintaining state, the adjusting screw 3 is adjusted at the moment, when the air pressure is just reduced, the fact that the air pressure pushes away the force of the spring is formed means that the thrust generated by the air pressure is consistent with the spring force, the force value of the spring is judged, and the force value is the force value of the shock absorber which needs to be opened at the speed point.
An embodiment of the present invention further provides a device for adjusting and detecting a guide cover core valve of an oil pressure shock absorber, as shown in fig. 1, including: positioning fixture 1, positioning fixture 1 is used for installing direction lid subassembly 2, direction lid subassembly 2 is including leading lid 21 to and place the core valve spring 22 of leading lid 21 in, the one end of core valve spring 22 is provided with adjusting screw 3, the other end of core valve spring 22 is provided with pressure-measuring pipe 4, and pressure-measuring pipe 4 compresses tightly the horizontal hole that leads lid 21 and core valve spring 22 to communicate through taut clamp plate 5 in, the other end of pressure-measuring pipe 4 is connected with accurate digital display barometer 6.
In summary, the method and the device for adjusting and detecting the guide cover core valve of the oil pressure shock absorber provided by the embodiment of the invention mainly have the following advantages:
firstly, the valve system spring force value can be quickly adjusted through measuring the air pressure value, and compared with the prior art that the accuracy and efficiency are greatly improved through adjusting the height of an adjusting nail;
and the adopted resources are factory common resources, are easy to obtain, the used air pressure measuring equipment is simple, the structural advantage of utilizing the single-action oil pressure shock absorber can be better achieved, and the production efficiency during assembly is effectively improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (3)
1. A method for adjusting and detecting a guide cover core valve of an oil pressure shock absorber is characterized by comprising the following steps: the valve hole of the guide cover is towards the hole of the direction of the pressure cylinder, the end face is compressed through the pressure measuring pipe to seal the valve hole, then the valve system is tightened, at the moment, the air source is opened to pressurize, the required pressure is adjusted through the precision barometer, the pressure is maintained, after the pressure is confirmed to be stable, the valve spring of the guide cover is adjusted under certain pressure through adjusting the adjusting screw of the valve core of the guide cover, the gas pressure is changed, the change of the gas pressure can be reflected on the barometer, when the specified pressure drop value is reached, the gas pressure can be judged to be consistent with the spring force, and the measured spring force value is the force value to be adjusted.
2. The method for detecting the adjustment of the pilot cap core valve of the oil hydraulic shock absorber according to claim 1, comprising the steps of:
step S1, preassembling a guide cover assembly to be adjusted by the core valve spring, and locking an adjusting screw to the deepest position to compress the core valve spring to the tightest position;
step S2, installing the guide cover assembly on a positioning fixture, and after the guide cover assembly is installed in place, pressing the pressure measuring pipe into a horizontal hole formed by the guide cover and a core valve spring in a tightly-tensioned mode by using a tensioning pressing plate;
and step S3, opening the air valve, adjusting the precision digital display air pressure gauge to a certain pressure, turning the air pressure gauge to a pressure maintaining state, adjusting the adjusting screw at the moment, and when the air pressure is adjusted to be just reduced, indicating that the force of the air pressure pushing the spring is formed, wherein the thrust generated by the air pressure is consistent with the spring force, and judging the force value of the spring, wherein the force value is the force value of the shock absorber which needs to be opened at the speed point.
3. The utility model provides a detection device is adjusted to oil damper direction lid core valve which characterized in that includes: the positioning fixture is used for installing the guide cover assembly, the guide cover assembly comprises a guide cover and a core valve spring arranged in the guide cover, an adjusting screw is arranged at one end of the core valve spring, a pressure measuring pipe is arranged at the other end of the core valve spring and tightly pressed in the guide cover and the horizontal hole communicated with the core valve spring through a tensioning pressing plate, and the other end of the pressure measuring pipe is connected with a precision digital display barometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011624801.7A CN112781850B (en) | 2020-12-31 | 2020-12-31 | Method and device for detecting adjustment of guide cover core valve of oil pressure damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011624801.7A CN112781850B (en) | 2020-12-31 | 2020-12-31 | Method and device for detecting adjustment of guide cover core valve of oil pressure damper |
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| CN112781850A true CN112781850A (en) | 2021-05-11 |
| CN112781850B CN112781850B (en) | 2024-09-24 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2054165U (en) * | 1989-06-28 | 1990-03-07 | 北京市燕山石油化工公司化工一厂 | On-line detector for safety valve |
| JPH05346185A (en) * | 1992-06-11 | 1993-12-27 | Ckd Corp | Adjusting device for control valve opening/closing speed and flow by pneumatic control |
| CN203772533U (en) * | 2014-02-19 | 2014-08-13 | 深圳市特种设备安全检验研究院 | Safety valve online checking matched set |
| CN206930440U (en) * | 2017-07-19 | 2018-01-26 | 上海德尔格医疗器械有限公司 | A kind of test device of safety valve |
| CN109269798A (en) * | 2018-11-23 | 2019-01-25 | 燕山大学 | A kind of damper recuperation valve spring pre-tightening force tester |
| CN209214902U (en) * | 2018-11-30 | 2019-08-06 | 武汉锅炉集团阀门有限责任公司 | Safety valve in-line calibration device |
| CN111386203A (en) * | 2017-11-28 | 2020-07-07 | 沃尔沃卡车集团 | Method for determining the functional state of a vehicle shock absorber device |
| CN111693217A (en) * | 2020-07-15 | 2020-09-22 | 山东核电有限公司 | Device for verification test of valve core and valve cage sealing of side-discharge valve |
| CN214793739U (en) * | 2020-12-31 | 2021-11-19 | 深圳市中车业成实业有限公司 | Oil hydraulic damper guide cover core valve adjusting and detecting device |
-
2020
- 2020-12-31 CN CN202011624801.7A patent/CN112781850B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2054165U (en) * | 1989-06-28 | 1990-03-07 | 北京市燕山石油化工公司化工一厂 | On-line detector for safety valve |
| JPH05346185A (en) * | 1992-06-11 | 1993-12-27 | Ckd Corp | Adjusting device for control valve opening/closing speed and flow by pneumatic control |
| CN203772533U (en) * | 2014-02-19 | 2014-08-13 | 深圳市特种设备安全检验研究院 | Safety valve online checking matched set |
| CN206930440U (en) * | 2017-07-19 | 2018-01-26 | 上海德尔格医疗器械有限公司 | A kind of test device of safety valve |
| CN111386203A (en) * | 2017-11-28 | 2020-07-07 | 沃尔沃卡车集团 | Method for determining the functional state of a vehicle shock absorber device |
| CN109269798A (en) * | 2018-11-23 | 2019-01-25 | 燕山大学 | A kind of damper recuperation valve spring pre-tightening force tester |
| CN209214902U (en) * | 2018-11-30 | 2019-08-06 | 武汉锅炉集团阀门有限责任公司 | Safety valve in-line calibration device |
| CN111693217A (en) * | 2020-07-15 | 2020-09-22 | 山东核电有限公司 | Device for verification test of valve core and valve cage sealing of side-discharge valve |
| CN214793739U (en) * | 2020-12-31 | 2021-11-19 | 深圳市中车业成实业有限公司 | Oil hydraulic damper guide cover core valve adjusting and detecting device |
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| CN112781850B (en) | 2024-09-24 |
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Country or region after: China Address after: No. 8052, Yuanshan international road, 100d2, Zhongshan District, Guangdong Province Applicant after: Shenzhen Yecheng Industrial Co.,Ltd. Address before: No. 8052, Yuanshan international road, 100d2, Zhongshan District, Guangdong Province Applicant before: SHENZHEN ZHONGCHE YECHENG INDUSTRIAL Co.,Ltd. Country or region before: China |
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