CN207437503U - A kind of hydraulic system tested for oil cylinder top - Google Patents
A kind of hydraulic system tested for oil cylinder top Download PDFInfo
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- CN207437503U CN207437503U CN201721127270.4U CN201721127270U CN207437503U CN 207437503 U CN207437503 U CN 207437503U CN 201721127270 U CN201721127270 U CN 201721127270U CN 207437503 U CN207437503 U CN 207437503U
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Abstract
The utility model is related to a kind of hydraulic systems tested for oil cylinder top, have programmable PLC controller, testing stand and power station；The testing stand is equipped with the load cylinder that can be connected with subject oil cylinder and the dynamic torque sensor for measuring torque；The subject oil cylinder is equipped with stroke sensor；It is characterized in that：The power station includes main fuel tank, power oil-duct and loading oil circuit；Energy accumulator station is equipped in the power oil-duct.The utility model not only reduces the power of high-pressure pump by energy accumulator station, and expands the pressure regulation spectrum of power oil-duct, while energy consumption and noise are substantially reduced.The utility model high degree of automation can realize automatic control effect.
Description
Technical field
The utility model is related to oil cylinder delivery test hydraulic system, more particularly to a kind of hydraulic pressure tested for oil cylinder top
System.
Background technology
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, and the hydraulic pressure for doing straight reciprocating motion (or pendulum motion) performs
Element.Its structure is simple, reliable operation.Deceleration device when realizing reciprocating motion, can be removed from it, and without between transmission
Gap, stable movement, therefore be widely applied in the hydraulic system of various machineries.
The delivery test of hydraulic cylinder and the Hydraulic System Principle of type approval test are given in standard GB/T/T 15622
Figure.But when carrying out testing inspection to hydraulic cylinder using more than hydraulic system principle figure, there is following deficiency：
1st, when testing big volume oil cylinder, it is necessary to which high-pressure high-flow pumps, high energy consumption, investment is high, and noise is big；
2nd, it can not realize and automatically control, inefficiency；
3rd, loading system is adjusted difficult, can not accurately adjust loading torque；
4th, power oil-duct pressure regulation spectrum is narrow, adjusts difficulty, can not realize the experiments such as load efficiency, volumetric efficiency.
Utility model content
The purpose of this utility model is to provide a kind of high degree of automation, and low energy consumption, and power oil-duct pressure regulation spectrum is wide
For oil cylinder to top experiment hydraulic system.
Realizing the technical solution of the utility model aim is：The utility model have programmable PLC controller, testing stand and
Power station；The testing stand is equipped with the load cylinder that can be connected with subject oil cylinder and is turned round for measuring the dynamic of torque
Square sensor；The subject oil cylinder is equipped with stroke sensor；The power station includes main fuel tank, power oil-duct and loading oil
Road；
The power oil-duct includes high-pressure pump, the first check valve, energy accumulator station, first pressure transmitter, second pressure and becomes
Send device, proportional servo pressure reducing valve and the first solenoid directional control valve；The oil inlet end of high-pressure pump is connected with main fuel tank, the oil outlet end of high-pressure pump
It is connected with the liquid feeding end of the first check valve, the outlet end of the first check valve is connected with the P mouths of the first solenoid directional control valve, the first electromagnetism
The A mouths of reversal valve are connected with being tested the oil inlet of oil cylinder, are tested the oil return opening of oil cylinder and are connected with the B mouths of the first solenoid directional control valve；
Along pipeline flow direction is equipped with first pressure transmitter successively, ratio is watched on the pipeline that first check valve is connected with the first solenoid directional control valve
Take pressure reducing valve and second pressure transmitter；The energy accumulator station is connected with the outlet end of the first check valve, and energy accumulator station is located at
Between first check valve and first pressure transmitter；
The loading oil circuit includes slippage pump, the second check valve, the 3rd pressure transmitter and proportional servo overflow valve；It is described
The oil outlet end of slippage pump is connected with the liquid feeding end of the second check valve, and the outlet end of the second check valve and the oil inlet of load cylinder connect
It connects；The oil return opening of load cylinder is connected by pipeline with the oil inlet end of proportional servo overflow valve；3rd pressure transmitter is set
Put the oil inlet end in proportional servo overflow valve；
The dynamic torque sensor, stroke sensor, first pressure transmitter, second pressure transmitter, the 3rd pressure
Transmitter is electrically connected with the input terminal of programmable PLC controller；The high-pressure pump, energy accumulator station, proportional servo pressure reducing valve,
First solenoid directional control valve, slippage pump, proportional servo overflow valve are electrically connected with the output terminal of programmable PLC controller.
Electric heater and temperature transmitter are equipped in above-mentioned main fuel tank；The input of the temperature transmitter and programmable PLC
End electrical connection；The electric heater and the output terminal of programmable PLC are electrically connected.
Pilot operated compound relief valve is additionally provided on the pipeline that above-mentioned first check valve is connected with the first solenoid directional control valve；The guide
Formula overflow valve is between second pressure transmitter and proportional servo pressure reducing valve；On the pipeline that high-pressure pump is connected with the first check valve
It is additionally provided with electromagnetic relief valve；The liquid feeding end of electromagnetic relief valve is equipped with pressure gauge；The electromagnetic relief valve connects the first oil return filter
Device；Low pressure relief valve is additionally provided on the pipeline that slippage pump is connected with the second check valve, the liquid feeding end of low pressure relief valve is equipped with the 4th
Pressure transmitter；The input terminal of 4th pressure transmitter and programmable PLC controller is electrically connected, low pressure relief valve with can
Program the output terminal electrical connection of PLC controller.
Above-mentioned second check valve includes No.1 check valve, No. two check valves, No. three check valves, No. four check valves；No.1 list
It is connected to the liquid feeding end of valve with the liquid feeding end of No. two check valves, the liquid feeding end of the outlet end of No.1 check valve and No. three check valves connects
It connects, the outlet end of No. three check valves is connected with the outlet end of No. four check valves, the liquid feeding end and No. two check valves of No. four check valves
Outlet end connection；Liquid feeding end of the oil outlet end of the slippage pump with the liquid feeding end of No.1 check valve, No. two check valves is connected；
Liquid feeding end of the oil inlet of the load cylinder with the outlet end of No.1 check valve, No. three check valves is connected；The loading oil
The oil return opening of cylinder is connected with the liquid feeding end of No. four check valves；The oil inlet end of the proportional servo overflow valve goes out with No. four check valves
Liquid end connects.
The oil inlet of above-mentioned load cylinder is connected with the oil return opening of load cylinder by branch pipe；The branch pipe is equipped with second
Solenoid directional control valve；The output terminal of second solenoid directional control valve and programmable PLC controller is electrically connected.
The 3rd solenoid directional control valve is additionally provided on above-mentioned power oil-duct；The A mouths of 3rd solenoid directional control valve and the first electromagnetic switch
The T mouths connection of valve；The output of 3rd solenoid directional control valve and programmable PLC controller is electrically connected.
Above-mentioned high-pressure pump is connected by the first oil absorption filter with main fuel tank；First check valve and the first electromagnetic switch
Fine filter is additionally provided on the pipeline of valve；The fine filter is between energy accumulator station and the first check valve；The essence filtering
Device is electrically connected with programmable PLC controller；The oil inlet end of the slippage pump is equipped with the second oil absorption filter；Proportional servo overflow
The oil outlet of valve is equipped with the second return filter.
Above-mentioned energy accumulator station is Accumulator.
Above-mentioned first solenoid directional control valve is Y type three-position four-way electromagnetic directional valves；Second solenoid directional control valve is normally opened two
The two barrels of solenoid directional control valves in position；3rd solenoid directional control valve is O-shaped 3-position-3-way solenoid directional control valve.
PLC system of the above-mentioned programmable PLC controller including model S71200, PLC active stations, motor controlling cabinet, mould
Analog quantity signal junction box, on-off model junction box；The PLC active stations are connected with PLC system network communication；The PLC systems
System is connected respectively with motor controlling cabinet, analog signals junction box, on-off model junction box's electric signal rigid line；The high pressure
Pump, slippage pump are connected with motor controlling cabinet electric signal rigid line；The dynamic torque sensor, stroke sensor, first pressure
Transmitter, second pressure transmitter, the 3rd pressure transmitter, the 4th pressure transmitter, temperature transmitter, proportional servo decompression
Valve, proportional servo overflow valve are connected with analog signals junction box's electric signal rigid line；First solenoid directional control valve, the second electricity
Magnetic reversal valve, the 3rd solenoid directional control valve, electromagnetic relief valve, the first return filter, fine filter with on-off model wiring
Case electric signal rigid line connects.
Above-mentioned programmable OLC controllers further include printer；The printer is connected with PLC system network communication.
The utility model has positive effect：(1) the utility model substantially reduces high-pressure pump by energy accumulator station
Power, Gaoyang pump the charging pump only as accumulator, and energy consumption reduces, lower noise；The pressure of power oil-duct has also been enlarged simultaneously
Adjustable range can meet the experiments such as load efficiency, volumetric efficiency；
(2) the utility model high degree of automation is conducive to power oil-duct and loading oil circuit by programmable PLC controller
Automatically control, accurately control loading torque and test pressure, greatly improve service precision and efficiency；
(3) the utility model can control the temperature of hydraulic oil by electric heater and temperature transmitter, so as to meet high temperature
The requirement of experiment, further expands use scope；
(4) the utility model can in real time be monitored loine pressure control by programmable PLC controller, ensure pipeline
Safety；
(5) the second check valve using " bridge " formula circuit, is mended using the second check valve to load cylinder in the utility model
Oil can avoid evacuating；
(6) the utility model can realize the zero load of load cylinder by the second solenoid directional control valve.
Description of the drawings
In order to which the content for making the utility model is easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model, wherein
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of the second check valve in the utility model；
Fig. 3 is the signal schematic representation of programmable PLC controller；
Fig. 4 is the electrical connection diagram of programmable PLC controller.
Specific embodiment
See Fig. 1 to Fig. 4, the utility model has programmable PLC controller, testing stand 1 and power station 2；The testing stand 1
It is equipped with the load cylinder 4 that can be connected with subject oil cylinder 3 and the dynamic torque sensor 5 for measuring torque；It is described
It is tested oil cylinder 3 and is equipped with stroke sensor 31；The power station 2 includes main fuel tank 201, power oil-duct and loading oil circuit；
The power oil-duct includes high-pressure pump 202, the first check valve 203, energy accumulator station 204, first pressure transmitter
205th, second pressure transmitter 206,207 and first solenoid directional control valve 208 of proportional servo pressure reducing valve；The oil inlet end of high-pressure pump 202
It is connected with main fuel tank 201, the oil outlet end of high-pressure pump 202 is connected with the liquid feeding end of the first check valve 203, the first check valve 203
Outlet end is connected with the P mouths of the first solenoid directional control valve 208, the A mouths of the first solenoid directional control valve 208 and the oil inlet for being tested oil cylinder 3
Connection, the oil return opening of subject oil cylinder 3 are connected with the B mouths of the first solenoid directional control valve 208；First check valve 203 is changed with the first electromagnetism
First pressure transmitter 205, proportional servo pressure reducing valve 207 and the are equipped with successively along pipeline flow direction on the pipeline connected to valve 208
Two pressure transmitters 206；The energy accumulator station 204 is connected with the outlet end of the first check valve 203, and energy accumulator station 204 is located at
Between first check valve 203 and first pressure transmitter 205；
The loading oil circuit overflows including slippage pump 209, the second check valve 210, the 3rd pressure transmitter 211 and proportional servo
Flow valve 212；The oil outlet end of the slippage pump 209 is connected with the liquid feeding end of the second check valve 210, and the second check valve 210 goes out liquid
End is connected with the oil inlet of load cylinder 4；The oil inlet that the oil return opening of load cylinder 4 passes through pipeline and proportional servo overflow valve 212
End connection；3rd pressure transmitter 211 is arranged on the oil inlet end of proportional servo overflow valve 212；
The dynamic torque sensor 5, stroke sensor 31, first pressure transmitter 205, second pressure transmitter 206,
3rd pressure transmitter 211 is electrically connected with the input terminal of programmable PLC controller；The high-pressure pump 202, energy accumulator station
204th, proportional servo pressure reducing valve 207, the first solenoid directional control valve 208, slippage pump 209, proportional servo overflow valve 212 are with may be programmed
The output terminal electrical connection of PLC controller.
Electric heater 213 and temperature transmitter 214 are equipped in the main fuel tank 201；The temperature transmitter 214 is with that can compile
The input terminal electrical connection of journey PLC；The electric heater 213 and the output terminal of programmable PLC are electrically connected.
Pilot operated compound relief valve is additionally provided on the pipeline that first check valve 203 is connected with the first solenoid directional control valve 208
215；The pilot operated compound relief valve 215 is between second pressure transmitter 206 and proportional servo pressure reducing valve 207；High-pressure pump 202
Electromagnetic relief valve 216 is additionally provided on the pipeline being connected with the first check valve 203；The liquid feeding end of electromagnetic relief valve 216 is equipped with pressure
Table 217；The electromagnetic relief valve 216 connects the first return filter 218；The pipe that slippage pump 209 is connected with the second check valve 210
Road is additionally provided with low pressure relief valve 219, and the liquid feeding end of low pressure relief valve 219 is equipped with the 4th pressure transmitter 220；4th pressure
Power transmitter 220 and the input terminal of programmable PLC controller are electrically connected, low pressure relief valve 219 and programmable PLC controller
Output terminal is electrically connected.
Second check valve 210 include No.1 check valve 210-1, No. two check valve 210-2, No. three check valve 210-3,
No. four check valve 210-4；The liquid feeding end of No.1 check valve 210-1 is connected with the liquid feeding end of No. two check valve 210-2, and No.1 is unidirectional
The outlet end of valve 210-1 is connected with the liquid feeding end of No. three check valve 210-3, the outlet end and No. four lists of No. three check valve 210-3
It is connected to the outlet end of valve 210-4, the liquid feeding end of No. four check valve 210-4 is connected with the outlet end of No. two check valve 210-2；Institute
Liquid feeding end of the oil outlet end of slippage pump 209 with the liquid feeding end of No.1 check valve 210-1, No. two check valve 210-2 is stated to be connected；Institute
Liquid feeding end of the oil inlet of load cylinder 4 with the outlet end of No.1 check valve 210-1, No. three check valve 210-3 is stated to be connected；Institute
The oil return opening for stating load cylinder 4 is connected with the liquid feeding end of No. four check valve 210-4；The oil inlet of the proportional servo overflow valve 212
End is connected with the outlet end of No. four check valve 210-4.
The oil inlet of the load cylinder 4 is connected with the oil return opening of load cylinder 4 by branch pipe；The branch pipe is equipped with the
Two solenoid directional control valves 221；The output terminal of second solenoid directional control valve 221 and programmable PLC controller is electrically connected.
The 3rd solenoid directional control valve 222 is additionally provided on the power oil-duct；The A mouths of 3rd solenoid directional control valve 222 and the first electricity
The T mouths connection of magnetic reversal valve 208；The output of 3rd solenoid directional control valve 222 and programmable PLC controller is electrically connected.
The high-pressure pump 202 is connected by the first oil absorption filter 223 with main fuel tank 201；First check valve 203 with
Fine filter 224 is additionally provided on the pipeline of first solenoid directional control valve 208；The fine filter 224 is located at energy accumulator station 204 and
Between one check valve 203；The fine filter 224 is electrically connected with programmable PLC controller；The oil inlet of the slippage pump 209
End is equipped with the second oil absorption filter 225；The oil outlet of proportional servo overflow valve 212 is equipped with the second return filter 226.
The energy accumulator station 204 is Accumulator.
First solenoid directional control valve 208 is Y type three-position four-way electromagnetic directional valves；Second solenoid directional control valve 221 is
Normally opened two two barrels of solenoid directional control valves；3rd solenoid directional control valve 222 is O-shaped 3-position-3-way solenoid directional control valve.
The PLC system 6 of the programmable PLC controller including model S71200, PLC active stations 7, motor controlling cabinet 8,
Analog signals junction box 9, on-off model junction box 10 and printer；The PLC active stations 7 and printer with PLC systems
6 network communications of uniting connect；The PLC system 6 connects respectively with motor controlling cabinet 8, analog signals junction box 9, on-off model
10 electric signal rigid line of line case connects；The high-pressure pump 202, slippage pump 209 are connected with 8 electric signal rigid line of motor controlling cabinet；Institute
Dynamic torque sensor 5, stroke sensor 31, first pressure transmitter 205, second pressure transmitter 206, the 3rd pressure is stated to become
Send device 211, the 4th pressure transmitter 220, temperature transmitter 214, proportional servo pressure reducing valve 207, proportional servo overflow valve 212 equal
It is connected with 9 electric signal rigid line of analog signals junction box；First solenoid directional control valve 208, the second solenoid directional control valve 221,
Three solenoid directional control valves 222, electromagnetic relief valve 216, the first return filter 218, fine filter 224 with on-off model wiring
10 electric signal rigid line of case connects.
The utility model mesohigh pump 202 passes through the first oil absorption filter oil suction from main fuel tank 201, and high pressure oil is single through first
204 filling liquid of energy accumulator station is given to valve 203, fine filter 224；It is high after the pressure of first pressure transmitter 205 reaches setting value
Press pump 202 is stopped；It manually adjusts pilot operated compound relief valve 215 and passes through the decompression of programmable PLC controller setting ratio servo
The pressure value of 207 rear end of valve passes through opening for the value of feedback adjust automatically proportional servo pressure reducing valve 207 of second pressure transmitter 206
Degree so that the pressure of 207 rear end of proportional servo pressure reducing valve reaches setting value；By programmable PLC controller the first electromagnetism is allowed to change
Obtained to the left side solenoid valve of valve 208 it is electric, while allow the 3rd solenoid directional control valve 222 right side solenoid valve obtain it is electric so that hydraulic oil into
Enter to be tested oil cylinder 3 to start to act.
Meanwhile the torque value loaded is needed by the setting of programmable PLC controller, torsion is measured by dynamic torque sensor 5
Square simultaneously feeds back to programmable PLC controller, by programmable PLC controller the aperture of proportional servo overflow valve 212 is controlled to adjust
Whole on-load pressure and torque；When load cylinder 4 acts, slippage pump 209 passes through No.1 check valve 210-1, No. two check valves
" bridge " the formula circuit of 210-2, No. three check valve 210-3 and No. four check valve 210-4 compositions avoids taking out to 4 repairing of load cylinder
It is empty.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, is not limited to
The utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all
It is included within the scope of protection of this utility model.
Claims (10)
1. a kind of hydraulic system tested for oil cylinder top, has programmable PLC controller, testing stand (1) and power station
(2)；The testing stand (1) is equipped with can be with the load cylinder (4) of subject oil cylinder (3) mating connection and for measuring torque
Dynamic torque sensor (5)；The subject oil cylinder (3) is equipped with stroke sensor (31)；It is characterized in that：The power station
(2) main fuel tank (201), power oil-duct and loading oil circuit are included；
The power oil-duct includes high-pressure pump (202), the first check valve (203), energy accumulator station (204), first pressure transmitter
(205), second pressure transmitter (206), proportional servo pressure reducing valve (207) and the first solenoid directional control valve (208)；High-pressure pump
(202) oil inlet end is connected with main fuel tank (201), and the oil outlet end of high-pressure pump (202) and the liquid feeding end of the first check valve (203) connect
It connects, the outlet end of the first check valve (203) is connected with the P mouths of the first solenoid directional control valve (208), the first solenoid directional control valve (208)
A mouths with subject oil cylinder (3) oil inlet be connected, be tested oil cylinder (3) oil return opening and the first solenoid directional control valve (208) B mouths
Connection；The first pressure is equipped with successively along pipeline flow direction on the pipeline that first check valve (203) is connected with the first solenoid directional control valve (208)
Power transmitter (205), proportional servo pressure reducing valve (207) and second pressure transmitter (206)；The energy accumulator station (204) and the
The outlet end connection of one check valve (203), and energy accumulator station (204) is located at the first check valve (203) and first pressure transmitter
(205) between；
The loading oil circuit includes slippage pump (209), the second check valve (210), the 3rd pressure transmitter (211) and proportional servo
Overflow valve (212)；The oil outlet end of the slippage pump (209) is connected with the liquid feeding end of the second check valve (210), the second check valve
(210) outlet end is connected with the oil inlet of load cylinder (4)；The oil return opening of load cylinder (4) passes through pipeline and proportional servo
The oil inlet end connection of overflow valve (212)；3rd pressure transmitter (211) be arranged on proportional servo overflow valve (212) into
Oily end；
The dynamic torque sensor (5), stroke sensor (31), first pressure transmitter (205), second pressure transmitter
(206), the 3rd pressure transmitter (211) is electrically connected with the input terminal of programmable PLC controller；The high-pressure pump (202),
Energy accumulator station (204), proportional servo pressure reducing valve (207), the first solenoid directional control valve (208), slippage pump (209), proportional servo overflow
Valve (212) is flowed to be electrically connected with the output terminal of programmable PLC controller.
2. a kind of hydraulic system tested for oil cylinder top according to claim 1, it is characterised in that：The main fuel tank
(201) electric heater (213) and temperature transmitter (214) are equipped in；The temperature transmitter (214) is defeated with programmable PLC
Enter end electrical connection；The electric heater (213) and the output terminal of programmable PLC are electrically connected.
3. a kind of hydraulic system tested for oil cylinder top according to claim 2, it is characterised in that：Described first is single
Pilot operated compound relief valve (215) is additionally provided on the pipeline being connected to valve (203) with the first solenoid directional control valve (208)；The pilot-operated type
Overflow valve (215) is located between second pressure transmitter (206) and proportional servo pressure reducing valve (207)；High-pressure pump (202) and first
Electromagnetic relief valve (216) is additionally provided on the pipeline of check valve (203) connection；The liquid feeding end of electromagnetic relief valve (216) is equipped with pressure
Table (217)；The electromagnetic relief valve (216) connects the first return filter (218)；Slippage pump (209) and the second check valve
(210) low pressure relief valve (219) is additionally provided on the pipeline of connection, the liquid feeding end of low pressure relief valve (219) becomes equipped with the 4th pressure
Send device (220)；4th pressure transmitter (220) and the input terminal of programmable PLC controller are electrically connected, low pressure relief valve
(219) it is electrically connected with the output terminal of programmable PLC controller.
4. a kind of hydraulic system tested for oil cylinder top according to claim 1 or 2 or 3, it is characterised in that：It is described
Second check valve (210) include No.1 check valve (210-1), No. two check valves (210-2), No. three check valves (210-3), No. four
Check valve (210-4)；The liquid feeding end of No.1 check valve (210-1) is connected with the liquid feeding end of No. two check valves (210-2), No.1 list
It is connected to the outlet end of valve (210-1) with the liquid feeding end of No. three check valves (210-3), the outlet end of No. three check valves (210-3)
It is connected with the outlet end of No. four check valves (210-4), the liquid feeding end of No. four check valves (210-4) and No. two check valves (210-2)
Outlet end connection；The oil outlet end of the slippage pump (209) with the liquid feeding end of No.1 check valve (210-1), No. two check valves
The liquid feeding end connection of (210-2)；The oil inlet of the load cylinder (4) with the outlet end of No.1 check valve (210-1), No. three
The liquid feeding end connection of check valve (210-3)；The oil return opening of the load cylinder (4) and the liquid feeding end of No. four check valves (210-4)
Connection；The oil inlet end of the proportional servo overflow valve (212) is connected with the outlet end of No. four check valves (210-4).
5. a kind of hydraulic system tested for oil cylinder top according to claim 4, it is characterised in that：The loading oil
The oil inlet of cylinder (4) is connected with the oil return opening of load cylinder (4) by branch pipe；The branch pipe is equipped with the second solenoid directional control valve
(221)；Second solenoid directional control valve (221) and the output terminal of programmable PLC controller are electrically connected.
6. a kind of hydraulic system tested for oil cylinder top according to claim 5, it is characterised in that：The power oil
Road is additionally provided with the 3rd solenoid directional control valve (222)；The A mouths of 3rd solenoid directional control valve (222) and the first solenoid directional control valve (208)
T mouthfuls of connections；3rd solenoid directional control valve (222) and the output of programmable PLC controller are electrically connected.
7. a kind of hydraulic system tested for oil cylinder top according to claim 6, it is characterised in that：The high pressure
Pump (202) is connected by the first oil absorption filter (223) with main fuel tank (201)；First check valve (203) and the first electromagnetism
Fine filter (224) is additionally provided on the pipeline of reversal valve (208)；The fine filter (224) is located at energy accumulator station (204) and the
Between one check valve (203)；The fine filter (224) is electrically connected with programmable PLC controller；The slippage pump (209)
Oil inlet end be equipped with the second oil absorption filter (225)；The oil outlet of proportional servo overflow valve (212) is equipped with the second return filter
(226)。
8. a kind of hydraulic system tested for oil cylinder top according to claim 7, it is characterised in that：The accumulator
(204) are stood as Accumulator.
9. a kind of hydraulic system tested for oil cylinder top according to claim 8, it is characterised in that：First electricity
Magnetic reversal valve (208) is Y type three-position four-way electromagnetic directional valves；Second solenoid directional control valve (221) is normally opened two two barrels of electricity
Magnetic reversal valve；3rd solenoid directional control valve (222) is O-shaped 3-position-3-way solenoid directional control valve.
10. a kind of hydraulic system tested for oil cylinder top according to claim 1 or 2 or 3, it is characterised in that：Institute
State PLC system (6) of the programmable PLC controller including model S71200, PLC active stations (7), motor controlling cabinet (8), simulation
Measure signal junction box (9), on-off model junction box (10)；The PLC active stations (7) connect with PLC system (6) network communication
It connects；The PLC system (6) respectively with motor controlling cabinet (8), analog signals junction box (9), on-off model junction box (10)
Electric signal rigid line connects；The high-pressure pump (202), slippage pump (209) are connected with motor controlling cabinet (8) electric signal rigid line；Institute
State dynamic torque sensor (5), stroke sensor (31), first pressure transmitter (205), second pressure transmitter (206),
Three pressure transmitters (211), the 4th pressure transmitter (220), temperature transmitter (214), proportional servo pressure reducing valve (207), ratio
Example servo overflow valve (212) is connected with analog signals junction box (9) electric signal rigid line；First solenoid directional control valve
(208), the second solenoid directional control valve (221), the 3rd solenoid directional control valve (222), electromagnetic relief valve (216), the first return filter
(218), fine filter (224) is connected with on-off model junction box (10) electric signal rigid line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127270.4U CN207437503U (en) | 2017-09-04 | 2017-09-04 | A kind of hydraulic system tested for oil cylinder top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127270.4U CN207437503U (en) | 2017-09-04 | 2017-09-04 | A kind of hydraulic system tested for oil cylinder top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437503U true CN207437503U (en) | 2018-06-01 |
Family
ID=62301190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721127270.4U Active CN207437503U (en) | 2017-09-04 | 2017-09-04 | A kind of hydraulic system tested for oil cylinder top |
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| Country | Link |
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| CN (1) | CN207437503U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253132A (en) * | 2018-11-13 | 2019-01-22 | 中山市鑫海精密制造科技有限公司 | A kind of hydraulic system for oil cylinder pressure maintaining test |
| CN110319074A (en) * | 2019-07-10 | 2019-10-11 | 武汉科技大学 | Stop valve cuts off discharge characteristic test device and its test method |
| CN115899020A (en) * | 2022-12-19 | 2023-04-04 | 东北林业大学 | Programmable test bed for testing dynamic characteristics of proportional valve control cylinder |
-
2017
- 2017-09-04 CN CN201721127270.4U patent/CN207437503U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253132A (en) * | 2018-11-13 | 2019-01-22 | 中山市鑫海精密制造科技有限公司 | A kind of hydraulic system for oil cylinder pressure maintaining test |
| CN110319074A (en) * | 2019-07-10 | 2019-10-11 | 武汉科技大学 | Stop valve cuts off discharge characteristic test device and its test method |
| CN110319074B (en) * | 2019-07-10 | 2024-02-27 | 武汉科技大学 | Device and method for testing cut-off flow characteristics of cut-off valve |
| CN115899020A (en) * | 2022-12-19 | 2023-04-04 | 东北林业大学 | Programmable test bed for testing dynamic characteristics of proportional valve control cylinder |
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