CN209539671U - Railway vehicle braking beam pull test platform hydraulic device - Google Patents
Railway vehicle braking beam pull test platform hydraulic device Download PDFInfo
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- CN209539671U CN209539671U CN201920161145.8U CN201920161145U CN209539671U CN 209539671 U CN209539671 U CN 209539671U CN 201920161145 U CN201920161145 U CN 201920161145U CN 209539671 U CN209539671 U CN 209539671U
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- pressure regulation
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Abstract
The utility model discloses a kind of railway vehicle braking beam pull test platform hydraulic devices, belong to rail truck and repairs technical field of test equipment, the device includes providing the test oil cylinder of pressure oil by oil pump, it is equipped with main reversing valve between the oil pump and the test oil cylinder, precursor overflow valve is equipped between the oil outlet of the oil pump and the fuel tank；The precursor overflow valve has guide's hydraulic fluid port, pressure regulating unit is equipped between the guide's hydraulic fluid port and the fuel tank of the precursor overflow valve, the pressure regulating unit includes and the multiple pressure connect adjust branch；It includes the remote-control relief valve connecting with pressure regulation reversal valve that each pressure, which adjusts branch,.The problem of the utility model can solve that test result accuracy existing for existing railway vehicle braking beam pull test is low and reliability, controllability, the accuracy of test pressure are relatively low, influence test accuracy.
Description
Technical field
The utility model relates to rail trucks to repair technical field of test equipment, especially a kind of to be used for railway vehicle braking
The hydraulic device of Liang Lalishiyantai.
Background technique
It, need to be to them for the quality for examining the railway vehicle braking beam after remanufacturing in the maintenance company of rail truck
Carry out pull test；Existing railway vehicle braking beam pull test is logical the most commonly used is tensile testing machine, and tensile testing machine includes
The test cylinder of pressure gas source is provided by air compressor, the main gas circuit between air compressor and test cylinder is equipped with logical
Cross the shut-off valve of handwheel control；When work, for value of thrust different needed for different vehicle brake beam, manual rotation's handwheel,
The pressure in main gas circuit is adjusted to corresponding pressure value by the openings of sizes of adjustable cut-off valve；Pressure gas control in main gas circuit
Test cylinder does the reciprocating motion stretched out or bounced back, and drives tested railway vehicle braking beam to move reciprocatingly together with this, completes
To the pull test of railway vehicle braking beam；However, in practical application, due to the pressure gas moisture content from air compressor compared with
Height, will affect the accuracy of test data, while adjust the mode of the pressure value of pressure gas in main gas circuit by manual rotation's handwheel
It completes, therefore causes test result accuracy low and reliability, controllability, the accuracy of test pressure are relatively low, shadow
The problem of ringing test accuracy.
Utility model content
The utility model provides a kind of railway vehicle braking beam pull test platform hydraulic device, which can solve existing
Railway vehicle braking beam pull test existing for test result accuracy is low and reliability, controllability, the standard of test pressure
The problem of true property is relatively low, influences test accuracy.
To solve the above-mentioned problems, the technical scheme adopted by the utility model is this railway vehicle braking beam pulling force
Testing stand hydraulic device is set between the oil pump and the test oil cylinder including providing the test oil cylinder of pressure oil by oil pump
There is main reversing valve, precursor overflow valve is equipped between the oil outlet of the oil pump and the fuel tank；The precursor overflow valve has first
Oil diverting port, is equipped with pressure regulating unit between the guide's hydraulic fluid port and the fuel tank of the precursor overflow valve, the pressure adjusts single
Member includes and the multiple pressure connect adjust branch；It includes to connect with pressure regulation reversal valve that each pressure, which adjusts branch,
Remote-control relief valve.
In above-mentioned technical proposal, it includes first pressure that more specific technical solution, which may also is that the pressure adjusts branch,
Adjust branch, second pressure adjusts branch and third pressure adjusts branch；It includes the first remote control that the first pressure, which adjusts branch,
Overflow valve, it includes the second remote-control relief valve that the second pressure, which adjusts branch, and it includes that third is distant that the third pressure, which adjusts branch,
Control overflow valve；The pressure regulation reversal valve includes the first pressure regulation reversal valve and the second pressure regulation reversal valve；First remote-control relief valve
Oil inlet be connected with the first actuator port of the first pressure regulation reversal valve；The oil inlet of second remote-control relief valve with
Second actuator port of the first pressure regulation reversal valve is connected；The oil inlet of the third remote-control relief valve and described second is adjusted
The oil outlet of pressure reversal valve is connected；The oil inlet of the oil inlet of the first pressure regulation reversal valve, the second pressure regulation reversal valve
It is connected with guide's hydraulic fluid port of the precursor overflow valve；The oil outlet of first remote-control relief valve, the second remote control overflow
The oil outlet of the oil outlet of valve and the third remote-control relief valve is connected with the fuel tank.
Further: the main reversing valve and the first pressure regulation reversal valve are three-position four-way electromagnetic directional valve；It is described
Second pressure regulation reversal valve is two-position two-way electromagnetic directional valve.
It is further: throttling is equipped between the first actuator port of the main reversing valve and the rodless cavity of the test oil cylinder
Valve；The rod chamber of the test oil cylinder is connected with the second actuator port of the main reversing valve；The oil return of the main reversing valve
Mouth is connected with fuel tank.
It is further: the oil inlet of the first actuator port of the first pressure regulation reversal valve and first remote-control relief valve
Between oil circuit be equipped with first pressure gauge；Second actuator port of the first pressure regulation reversal valve and the second remote control overflow
Oil circuit between the oil inlet of valve is equipped with second pressure gauge；The oil outlet of the second pressure regulation reversal valve and the third are remotely controlled
Oil circuit between the oil inlet of overflow valve is equipped with third pressure gauge.
Further: the working connection close to the oil pump out of the mouth is equipped with the 4th pressure gauge.
It is further: oil filter is equipped between the oil outlet of the fuel tank and the oil pump.
By adopting the above-described technical solution, the utility model has the following beneficial effects: compared with prior art
1, since the present apparatus includes providing the test oil cylinder of pressure oil by oil pump, master is equipped between oil pump and test oil cylinder
Reversal valve is equipped with precursor overflow valve between the oil outlet and fuel tank of oil pump；Precursor overflow valve has guide's hydraulic fluid port, precursor overflow valve
Guide's hydraulic fluid port and fuel tank between be equipped with pressure regulating unit, pressure regulating unit includes and multiple pressure for connecing adjust branch
Road；It includes the remote-control relief valve to connect with pressure regulation reversal valve that each pressure, which adjusts branch,；Hydraulic coupling is instead of compressed air
Power, while each remote-control relief valve set up in advance is exported by guide's hydraulic fluid port of the commutation of pressure regulation reversal valve and precursor overflow valve
Pressure unloading, can obtain different test pressures, not only ensure that the accuracy of test result, and overcome pressure control
The problem that poor reliability, controllability be not high, test pressure accuracy is low.
2, due to being equipped with throttle valve between the first actuator port of solenoid directional control valve and the rodless cavity of test oil cylinder, by right
The adjusting of the pressure of throttle valve plays the role of the piston stretching speed of Control experiment oil cylinder.
3, due to the oil circuit between the first actuator port of the first pressure regulation reversal valve and the oil inlet of the first remote-control relief valve
It is equipped with first pressure gauge；Oil between second actuator port of the first pressure regulation reversal valve and the oil inlet of the second remote-control relief valve
Road is equipped with second pressure gauge；On oil circuit between the oil outlet of second pressure regulation reversal valve and the oil inlet of third remote-control relief valve
Equipped with third pressure gauge；Each test pressure value can be shown on pressure gauge, facilitate observation and read data.
Detailed description of the invention
Fig. 1 is the hydraulic schematic diagram of the utility model embodiment.
Specific embodiment
The utility model is described in further detail for embodiment with reference to the accompanying drawing:
Railway vehicle braking beam pull test platform hydraulic device shown in FIG. 1, including providing the examination of pressure oil by oil pump 1
Oil cylinder 2 is tested, main reversing valve 3 is equipped between oil pump 1 and test oil cylinder 2, main reversing valve 3 is three-position four-way electromagnetic directional valve；Master changes
The oil outlet 1O of oil inlet 3P and oil pump 1 to valve 3 are connected；First actuator port 3A of main reversing valve 3 and test oil cylinder 2
Throttle valve 16 is equipped between rodless cavity；The rod chamber of test oil cylinder 2 is connected with the second actuator port 3B of main reversing valve 3；It is main
The oil return opening 3T of reversal valve 3 is connected with fuel tank 15；Oil filter 14 is equipped between the oil outlet and oil pump 1 of fuel tank 15；Fuel tank 15
It is equipped with liquidometer 17；Working connection close to the oil outlet 1O of oil pump 1 is equipped with the 4th pressure gauge 13；The oil outlet 1O of oil pump 1
Precursor overflow valve 4 is equipped between fuel tank 15；Precursor overflow valve 4 has guide's hydraulic fluid port 4K, guide's hydraulic fluid port 4K of precursor overflow valve 4
Pressure regulating unit I is equipped between fuel tank 15, pressure regulating unit I includes and the first pressure connect adjusts branch, the second pressure
Power adjusts branch and third pressure adjusts three pressure of branch and adjusts branch；It includes changing with pressure regulation that these three pressure, which adjust branch,
The remote-control relief valve connected to valve；The control end of main reversing valve and pressure regulation reversal valve is switched equipped with shifting combination；Pressure regulation commutation
Valve includes the first pressure regulation reversal valve 5 and the second pressure regulation reversal valve 6, and the first pressure regulation reversal valve is three-position four-way electromagnetic directional valve, the
Two pressure regulation reversal valves are two-position two-way electromagnetic directional valve；Remote-control relief valve includes the first remote-control relief valve 7, the second remote-control relief valve
8 and third remote-control relief valve 9；It includes the first remote-control relief valve 7 that first pressure, which adjusts branch, and it includes that second pressure, which adjusts branch,
Two remote-control relief valves 8, it includes third remote-control relief valve 9 that third pressure, which adjusts branch,；Wherein, the oil inlet of the first remote-control relief valve 7
Mouth 7P is connected with the first actuator port 5A of the first pressure regulation reversal valve 5；The oil inlet 8P of second remote-control relief valve 8 and first is adjusted
Second actuator port 5B of pressure reversal valve 5 is connected；The oil inlet 9P of third remote-control relief valve 9 and the second pressure regulation reversal valve 6
Oil outlet 6O is connected；The oil inlet 5P of first pressure regulation reversal valve 5, the oil inlet 6P of the second pressure regulation reversal valve 6 and guide's overflow
Guide's hydraulic fluid port 4K of valve 4 is connected；The oil outlet 7O of first remote-control relief valve 7, the oil outlet 8O of the second remote-control relief valve 8 and
The oil outlet 9O of three remote-control relief valves 9 is connected with fuel tank 15；First actuator port 5A of the first pressure regulation reversal valve 5 and first is distant
The oil circuit controlled between the oil inlet 7P of overflow valve 7 is equipped with first pressure gauge 10；Second actuator port of the first pressure regulation reversal valve 5
Oil circuit between 5B and the oil inlet 8P of the second remote-control relief valve 8 is equipped with second pressure gauge 11；Second pressure regulation reversal valve 6 goes out
Oil circuit between hydraulic fluid port 6O and the oil inlet 9P of third remote-control relief valve 9 is equipped with third pressure gauge 12.
When test, the pressure unloading value of each remote-control relief valve is set up first, and each remote-control relief valve pressure is enabled to be below guide
The oil pressure relief value of overflow valve, and make the pressure unloading value of each remote-control relief valve and drawing needed for corresponding vehicle braking beam to be checked
Force value is identical, then starts oil pump, and passes through shifting combination switch control the first pressure regulation reversal valve or the second pressure regulation reversal valve
Commutate the reciprocating motion stretched out or bounced back to drive test oil cylinder to do, and drives tested railway vehicle braking beam to do together back and forth with this
The pull test to railway vehicle braking beam is completed in movement；It not only ensure that the accuracy of test result, and overcome air pressure
Control poor reliability, the problem that controllability is not high, test pressure accuracy is low.
Claims (7)
1. a kind of railway vehicle braking beam pull test platform hydraulic device, it is characterised in that: including providing pressure oil by oil pump
Test oil cylinder, between the oil pump and the test oil cylinder be equipped with main reversing valve, between the oil outlet and fuel tank of the oil pump
Equipped with precursor overflow valve；The precursor overflow valve has guide's hydraulic fluid port, the guide's hydraulic fluid port and the fuel tank of the precursor overflow valve
Between be equipped with pressure regulating unit, the pressure regulating unit includes and multiple pressure for connecing adjust branch；Each pressure
It includes the remote-control relief valve connecting with pressure regulation reversal valve that power, which adjusts branch,.
2. railway vehicle braking beam pull test platform hydraulic device according to claim 1, it is characterised in that: the pressure
Adjusting branch includes that first pressure adjusts branch, second pressure adjusts branch and third pressure adjusts branch；The first pressure
Adjusting branch includes the first remote-control relief valve, and it includes the second remote-control relief valve, the third pressure that the second pressure, which adjusts branch,
It includes third remote-control relief valve that power, which adjusts branch,；The pressure regulation reversal valve includes that the first pressure regulation reversal valve and the second pressure regulation commutate
Valve；The oil inlet of first remote-control relief valve is connected with the first actuator port of the first pressure regulation reversal valve；Described
The oil inlet of two remote-control relief valves is connected with the second actuator port of the first pressure regulation reversal valve；The third is remotely controlled overflow
The oil inlet of valve is connected with the oil outlet of the second pressure regulation reversal valve；It is the oil inlet of the first pressure regulation reversal valve, described
The oil inlet of second pressure regulation reversal valve is connected with guide's hydraulic fluid port of the precursor overflow valve；First remote-control relief valve goes out
The oil outlet of hydraulic fluid port, the oil outlet of second remote-control relief valve and the third remote-control relief valve is connected with the fuel tank.
3. railway vehicle braking beam pull test platform hydraulic device according to claim 2, it is characterised in that: the master changes
It is three-position four-way electromagnetic directional valve to valve and the first pressure regulation reversal valve；The second pressure regulation reversal valve is bi-bit bi-pass electricity
Magnetic reversal valve.
4. railway vehicle braking beam pull test platform hydraulic device according to claim 2 or 3, it is characterised in that: described
Throttle valve is equipped between first actuator port of main reversing valve and the rodless cavity of the test oil cylinder；The test oil cylinder has bar
Chamber is connected with the second actuator port of the main reversing valve；The oil return opening of the main reversing valve is connected with fuel tank.
5. railway vehicle braking beam pull test platform hydraulic device according to claim 4, it is characterised in that: described first
Oil circuit between first actuator port of pressure regulation reversal valve and the oil inlet of first remote-control relief valve is equipped with first pressure
Table；It is set on oil circuit between second actuator port of the first pressure regulation reversal valve and the oil inlet of second remote-control relief valve
There is second pressure gauge；Oil circuit between the oil outlet of the second pressure regulation reversal valve and the oil inlet of the third remote-control relief valve
It is equipped with third pressure gauge.
6. railway vehicle braking beam pull test platform hydraulic device according to claim 5, it is characterised in that: close to described
The working connection of oil pump out of the mouth is equipped with the 4th pressure gauge.
7. railway vehicle braking beam pull test platform hydraulic device according to claim 6, it is characterised in that: the fuel tank
Oil outlet and the oil pump between be equipped with oil filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161145.8U CN209539671U (en) | 2019-01-18 | 2019-01-18 | Railway vehicle braking beam pull test platform hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161145.8U CN209539671U (en) | 2019-01-18 | 2019-01-18 | Railway vehicle braking beam pull test platform hydraulic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539671U true CN209539671U (en) | 2019-10-25 |
Family
ID=68272361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920161145.8U Active CN209539671U (en) | 2019-01-18 | 2019-01-18 | Railway vehicle braking beam pull test platform hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209539671U (en) |
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2019
- 2019-01-18 CN CN201920161145.8U patent/CN209539671U/en active Active
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