CN107063677A - A kind of weighing valve performance test stand - Google Patents
A kind of weighing valve performance test stand Download PDFInfo
- Publication number
- CN107063677A CN107063677A CN201710499365.7A CN201710499365A CN107063677A CN 107063677 A CN107063677 A CN 107063677A CN 201710499365 A CN201710499365 A CN 201710499365A CN 107063677 A CN107063677 A CN 107063677A
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- valve
- weighing
- performance test
- control unit
- test stand
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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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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Turbines (AREA)
Abstract
The invention provides a kind of weighing valve performance test stand, it includes test-bed（1）, bearing plate（2）, weighing valve（3）, control unit（4）, load maintainer（5）, fill/exhaust gear（6）, proportioning valve（7）And weighing sensor（8）, test-bed（1）On be installed with bearing plate（2）, bearing plate（2）Lower section be provided with weighing valve（3）, load maintainer（5）Installed in weighing valve（3）Lower section, load maintainer（5）It is provided with weighing sensor（8）, control unit point（4）Respectively with load maintainer（5）, fill/exhaust gear（6）And weighing sensor（8）Electrical connection, proportioning valve（7）It is located at control unit（4）With load maintainer（5）Between.The present invention is not only simple in structure and has the advantages that easy to operate, measuring accuracy is high, test scope is wide, can realize closed loop feedback, both ensure that the reliability of detection quality, the working strength of tester is alleviated again.
Description
Technical field
The present invention relates to Product checking, test device field, more particularly, to a kind of weighing valve performance test stand.
Background technology
Weighing valve is as a part for railway freight-car empty and load brake equipment, and the traffic safety to railway freight-car played to pass
Important effect.Weighing valve is located between the framework of bogie and journal box spring or between bolster and pillow spring, bogie spring point
The vehicle weight of load is acted directly on weighing valve, is allowed to produce the pressure signal proportional to vehicle weight, pressure signal enters
Enter the adjustment valve to empty and load brake equipment, adjustment valve exports different brake-cylinder pressure values, goods according to different pressure signals
Car weight amount is bigger, and the pressure signal of weighing valve output is bigger, and then the pressure value of checking cylinder is bigger, to reach checking cylinder pressure
The purpose that power increases and increased with the weight of railway freight-car.
At present, the platform control form of the performance test of weighing valve is more single, and measuring accuracy is not high, and it is used using operation
Manually control, often increase the operating pressure and working strength of tester, easily cause Lou item, erroneous judgement, claim simultaneously
Testing result in the detection process of weight valve does not carry out feedback control to loading device, virtually also increases test error,
Testing result and the quality of production are influenceed, there is certain hidden danger for the safe handling of weighing valve product.
The content of the invention
The technical problem to be solved in the present invention is：The problem of existing for prior art there is provided one kind weigh valve performance examination
Test platform, the test platform structure is simple, and the function with closed loop feedback can adjust the pressure value with feedback test in time, with compared with
High measuring accuracy, and it is simple to operate.
The technical problem to be solved in the present invention is realized using following technical scheme：A kind of weighing valve performance test stand, it
Including test-bed, bearing plate, weighing valve, control unit, load maintainer, fill and be installed with/exhaust gear, the test-bed
Bearing plate, the lower section of bearing plate is provided with weighing valve, and the load maintainer is arranged on the lower section of weighing valve, described to fill/exhaust gear
Be connected with the interface of weighing valve, described control unit respectively with load maintainer, fill/exhaust gear electrically connects.
Preferably, described load maintainer is provided with weighing sensor, and the weighing sensor is electrically connected with control unit.
Preferably, described load maintainer includes oil cylinder and hydraulic station, and the oil cylinder is connected with hydraulic station by pipeline.
Preferably, described load maintainer is provided with proportioning valve, and the body of the proportioning valve is arranged on hydraulic station, and it is controlled
Portion processed is electrically connected with control unit.
Preferably, the top of described weighing valve contacts installation with bearing plate, is left between its bottom and the contact of oil cylinder
Gap is installed.
Preferably, it is described fill/exhaust gear includes inflation mechanism and exhaust gear, one end of the inflation mechanism and title
The air inlet connection of weight valve, the other end is connected with air pump, and one end of the exhaust gear and the exhaust outlet of weighing valve are connected, another
End and atmosphere.
Preferably, described inflation mechanism includes pressure-reducing valve, inflation magnetic valve and input pickup, the pressure-reducing valve, fills
Pneumoelectric magnet valve and input pickup pass sequentially through pipeline connection.
Preferably, described exhaust gear includes output transducer and exhaust solenoid valve, the output transducer and exhaust
Magnetic valve passes sequentially through pipeline connection.
Preferably, a part of port of described control unit is electrically connected with D/A converter and A/D converter, another portion
Port is divided to be electrically connected with inflation magnetic valve and exhaust solenoid valve.
Preferably, described D/A converter is electrically connected with the control unit of proportioning valve, described A/D converter and biography of weighing
/ exhaust gear pipeline is filled in sensor, input pickup and output transducer, described inflation magnetic valve and exhaust solenoid valve control
Break-make.
Compared with prior art, the beneficial effects of the invention are as follows：Testboard overall structure is simple, by rationally setting loading
Mechanism, fill/exhaust gear, proportioning valve and control unit, and make to be connected with each other between them to coordinate, make weighing valve loading test
Precision is higher, while loading the function also in test and test result evaluation process with closed loop feedback, further improves
The confidence level of measuring accuracy and testing result, whole test process can both realize the automatic control control of test process or realize hand
Dynamic point control, improves testing efficiency and simplifies testing procedure, reduces the working strength of tester, saves labour cost.
Brief description of the drawings
Fig. 1 is each component connection diagram of the invention.
Fig. 2 is overall structure diagram of the invention.
Fig. 3 is workflow diagram of the invention.
Marked in figure：1- test-beds, 2- bearing plates, 3- weighing valves, 4- control units, 5- load maintainers, 501- oil cylinders,
502- hydraulic stations, 6- fills/exhaust gear, and 601- inflation mechanisms, 601a- pressure-reducing valves, 601b- inflation magnetic valves, 601c- inputs are passed
Sensor, 602- exhaust gears, 602a- output transducers, 602b- exhaust solenoid valves, 7- proportioning valves, 8- weighing sensors, 9-D/A
Converter, 10-A/D converters, 11- ball valves, 12- touch display screens, 13- printing devices, 14- point driving switch.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and specific implementation
The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
As shown in Fig. 1 ~ 3, a kind of weighing valve performance test stand, it includes test-bed 1, bearing plate 2, weighing valve 3, control
Unit 4, load maintainer 5 ,/exhaust gear 6, proportioning valve 7, weighing sensor 8, D/A converter 9 and A/D converter 10 are filled, it is described
Bearing plate 2, weighing valve 3, control unit 4, load maintainer 5, fill/exhaust gear 6 is installed on test-bed 1, weighing valve 3
Installed in the bottom of bearing plate 2, the top of weighing valve 3 is contacted with bearing plate 2, and the lower section of weighing valve 3 is provided with load maintainer 5, institute
The load maintainer 5 stated includes being provided with weighing sensor 8, hydraulic station on oil cylinder 501 and hydraulic station 502, the contact of oil cylinder 501
502 be that oil cylinder 501 provides power, and the valve body of proportioning valve 7 is arranged in the pipeline of hydraulic station 502, the control unit and D/ of proportioning valve 7
A converters 9 are electrically connected, and the other end of D/A converter 9 is connected with control unit 4, push rod and the oil cylinder 501 of the bottom of weighing valve 3
Left between contact in certain installation gap, the uphill process of oil cylinder 501, the ejector pin contact of its contact gradually with weighing valve 3, oil
Cylinder 501 promotes the push rod of weighing valve 3 to move up, and opens the valve port inside weighing valve 3, inflation mechanism 601 connects with exhaust gear 602
Logical, the aperture size of the valve port of weighing valve 3 is proportional to the output pressure of exhaust gear 602, such as loaded load（t）For 2.5 when, it is defeated
Go out air pressure（kPa）For 60；Loaded load（t）For 6.5 when, output pressure（kPa）For 235；Work as loaded load（t）For 12 when, it is defeated
Go out air pressure（kPa）For 405.The inflation mechanism 601 is by ball valve 11, pressure-reducing valve 601a, inflation magnetic valve 601b, input pickup
601c and pressure gauge pass sequentially through pipeline connection composition, and one end of pipeline is connected with the input interface of weighing valve 3, the other end and wind
Source is connected, such as air pump.The exhaust gear 602 is passed sequentially through by output transducer 602a, exhaust solenoid valve 602b and pressure gauge
Pipeline connection composition, one end of pipeline is connected with the output interface of weighing valve 3, the other end and atmosphere.
Control unit 4 is also associated with A/D converter 10, and A/D converter 10 can sense input pickup 601c and output
The analog signal that device 602a is sent be converted into being also associated with data signal, control unit 4 touch display screen 12 of D/A converter 9,
Printing device 13, the data signal that the D/A converter 9 can send control unit 4 is converted into analog signal, and operator can lead to
Cross touch display screen 12 and write test program control test process, the manual control cylinder 501 of point driving switch 14 can also be passed through
Lifting, described printing device 13 can be printed to test result.
During experiment, manual unlocking ball valve 11, the pressure air that wind regime is provided is through pressure-reducing valve 601a and inflation magnetic valve
601b enters the inlet end of weighing valve 3, and wherein pressure-reducing valve 601a reduces to overpressure the pressure value set by test, and keeps
Stable, inflation magnetic valve 601b open and close are controlled by control unit 4, wherein the inflation magnetic valve being connected in main line
The inflation of main line starts and stopped when 601b realizes work, is connected to inflation magnetic valve 601b in branch road and is responsible in main line
Unnecessary pressure air is emitted into air.Hydraulic station 502 does not work under original operating state, and the contact of oil cylinder 501 is with weighing
The pressure that there is the pressure gauge display output pipeline in certain installation gap, the pipeline of exhaust gear 602 between valve 3 is zero.Press
Tested according to technical requirements, the data signal that programming setting control unit 4 sends different definite values is converted to through D/A converter 9
Electric signal is to proportioning valve 7, and proportioning valve 7 controls the pipeline oil pressure of hydraulic station 502 according to this electric signal, and oil cylinder 501 promotes contact
Move up and withstand on the push rod of weighing valve 3, because the bearing plate 2 of the top of weighing valve 3 is fixedly mounted on test-bed 1 so that claim
Weight valve 3 can not continue to move up, and weighing valve 3 is produced according to above-mentioned magnitude of load in the exhaust gear 602 being connected with its exhaust outlet
Certain pressure air, output transducer 602a reads the pressure air, and the analog signal is converted to numeral through A/D converter 10
Signal passes to control unit 4, and is shown in touch display screen 12, and control unit 4 is programmable controller（PLC）.The examination
Test platform also has closed loop feedback function to the size of load.Weighing sensor 8 is installed, when contact will on the contact of oil cylinder 501
Weighing valve 3 is withstood after generation load, and it is single to control that load value is converted to data signal by weighing sensor 8 through A/D converter 10
Member 4, and be shown in touch display screen 12.Program inside control unit 4 will survey load value and test requirements document load value ratio
Right, comparison value then records output end pressure air value in error range, if comparison value error goes beyond the scope, according to comparison
The setting value of comparative example valve 7 in value adjustment control unit 4, complies with error range, then read the pressure that exhaust gear 602 is fed back
Power air value.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Any modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of weighing valve performance test stand, it is characterised in that：It includes test-bed（1）, bearing plate（2）, weighing valve（3）、
Control unit（4）, load maintainer（5）, fill/exhaust gear（6）, the test-bed（1）On be installed with bearing plate（2）, pressure-bearing
Plate（2）Lower section be provided with weighing valve（3）, the load maintainer（5）Installed in weighing valve（3）Lower section, it is described to fill/exhaust gear
（6）With weighing valve（3）Interface connection, described control unit（4）Respectively with load maintainer（5）, fill/exhaust gear（6）It is electrically connected
Connect.
2. weighing valve performance test stand according to claim 1, it is characterised in that：Described load maintainer（5）It is provided with
Weighing sensor（8）, the weighing sensor（8）With control unit（4）Electrical connection.
3. weighing valve performance test stand according to claim 1, it is characterised in that：Described load maintainer（5）Including oil
Cylinder（501）And hydraulic station（502）, the oil cylinder（501）With hydraulic station（502）Connected by pipeline.
4. weighing valve performance test stand according to claim 3, it is characterised in that：Described load maintainer（5）It is provided with
Proportioning valve（7）, the proportioning valve（7）Body be arranged on hydraulic station（502）On, its control unit and control unit（4）Electrical connection.
5. weighing valve performance test stand according to claim 3, it is characterised in that：Described weighing valve（3）Top with
Bearing plate（2）Contact is installed, its bottom and oil cylinder（501）Contact between leave installation gap.
6. the weighing valve performance test stand according to claim 1 ~ 5 any one, it is characterised in that：Described fills/is vented
Mechanism（6）Including inflation mechanism（601）And exhaust gear（602）, the inflation mechanism（601）One end and weighing valve（3）'s
Air inlet is connected, and the other end is connected with air pump, the exhaust gear（602）One end and weighing valve（3）Exhaust outlet connection, separately
One end and atmosphere.
7. weighing valve performance test stand according to claim 6, it is characterised in that：Described inflation mechanism（601）Including
Pressure-reducing valve（601a）, inflation magnetic valve（601b）And input pickup（601c）, the pressure-reducing valve（601a）, inflation magnetic valve
（601b）And input pickup（601c）Pass sequentially through pipeline connection.
8. weighing valve performance test stand according to claim 7, it is characterised in that：Described exhaust gear（602）Including
Output transducer and exhaust solenoid valve（602b）, the output transducer and exhaust solenoid valve（602b）Pass sequentially through pipeline company
Connect.
9. weighing valve performance test stand according to claim 8, it is characterised in that：Described control unit（4）One
Divide port and D/A converter（9）And A/D converter（10）Electrical connection, another part port and inflation magnetic valve（601b）And row
Pneumoelectric magnet valve（602b）Electrical connection.
10. weighing valve performance test stand according to claim 9, it is characterised in that：Described D/A converter（9）With than
Example valve（7）Control unit electrical connection, described A/D converter（10）With weighing sensor（8）, input pickup（601c）With it is defeated
Go out sensor, described inflation magnetic valve（601b）And exhaust solenoid valve（602b）/ exhaust gear is filled in control（6）Pipeline it is logical
It is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499365.7A CN107063677B (en) | 2017-06-27 | 2017-06-27 | Weighing valve performance test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499365.7A CN107063677B (en) | 2017-06-27 | 2017-06-27 | Weighing valve performance test bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107063677A true CN107063677A (en) | 2017-08-18 |
| CN107063677B CN107063677B (en) | 2023-04-18 |
Family
ID=59613328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710499365.7A Active CN107063677B (en) | 2017-06-27 | 2017-06-27 | Weighing valve performance test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107063677B (en) |
Citations (16)
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|---|---|---|---|---|
| FR2258292A1 (en) * | 1974-01-23 | 1975-08-18 | Wabco Westinghouse | Brake pressure corrector for vehicle - has weight detector operating electromagnetic control valve |
| US4417767A (en) * | 1982-06-24 | 1983-11-29 | Sloan Valve Company | Empty and load brake system with separate proportional valve and load sensor valve means |
| JPH05172667A (en) * | 1991-12-20 | 1993-07-09 | Nippon Gear Co Ltd | Stem shaft thrust load measuring apparatus for valve actuator |
| CN1117453A (en) * | 1994-03-15 | 1996-02-28 | 丰田自动车株式会社 | Vehicle braking system distribution of front and rear braking forces is controlled according to two different distribution patterns depending upon vehicle load |
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| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
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| CN206056946U (en) * | 2016-09-14 | 2017-03-29 | 李干池 | A kind of test equipment for rail vehicle loaded valve |
| CN106677911A (en) * | 2015-11-05 | 2017-05-17 | 福特环球技术公司 | Methods and systems for open loop and closed loop control of exhaust gas recirculation system |
| CN106840713A (en) * | 2016-12-14 | 2017-06-13 | 杭州中车车辆有限公司 | Bicycle air damping device test bench and its application method |
| CN206832452U (en) * | 2017-06-27 | 2018-01-02 | 眉山中车制动科技股份有限公司 | A kind of weighing valve performance test stand |
-
2017
- 2017-06-27 CN CN201710499365.7A patent/CN107063677B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2258292A1 (en) * | 1974-01-23 | 1975-08-18 | Wabco Westinghouse | Brake pressure corrector for vehicle - has weight detector operating electromagnetic control valve |
| US4417767A (en) * | 1982-06-24 | 1983-11-29 | Sloan Valve Company | Empty and load brake system with separate proportional valve and load sensor valve means |
| JPH05172667A (en) * | 1991-12-20 | 1993-07-09 | Nippon Gear Co Ltd | Stem shaft thrust load measuring apparatus for valve actuator |
| CN1117453A (en) * | 1994-03-15 | 1996-02-28 | 丰田自动车株式会社 | Vehicle braking system distribution of front and rear braking forces is controlled according to two different distribution patterns depending upon vehicle load |
| CN1332678A (en) * | 1998-10-23 | 2002-01-23 | 克诺尔-布里姆斯轨道车辆系统有限公司 | Brake system for railway vehicles |
| JP2002365166A (en) * | 2001-06-11 | 2002-12-18 | Chubu Electric Power Co Inc | Testing device and test method for electrically-driven actuator for valve opening/closing |
| JP2010070175A (en) * | 2008-09-22 | 2010-04-02 | Nabtesco Corp | Brake control device |
| CN102328646A (en) * | 2011-07-25 | 2012-01-25 | 青岛四方车辆研究所有限公司 | Urban tram braking system |
| CN203005412U (en) * | 2013-01-14 | 2013-06-19 | 中国铁道科学研究院机车车辆研究所 | Electronic weighing valve control device for rail transit vehicle |
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| CN106335484A (en) * | 2015-07-08 | 2017-01-18 | Mtz运输机械股份公司 | Load sensor |
| CN106677911A (en) * | 2015-11-05 | 2017-05-17 | 福特环球技术公司 | Methods and systems for open loop and closed loop control of exhaust gas recirculation system |
| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
| CN206056946U (en) * | 2016-09-14 | 2017-03-29 | 李干池 | A kind of test equipment for rail vehicle loaded valve |
| CN106840713A (en) * | 2016-12-14 | 2017-06-13 | 杭州中车车辆有限公司 | Bicycle air damping device test bench and its application method |
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|---|---|
| CN107063677B (en) | 2023-04-18 |
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