CN106441855A - Testing system for valve electric device life with torque transmission screw rod and horizontal support rod - Google Patents
Testing system for valve electric device life with torque transmission screw rod and horizontal support rod Download PDFInfo
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- CN106441855A CN106441855A CN201611029109.3A CN201611029109A CN106441855A CN 106441855 A CN106441855 A CN 106441855A CN 201611029109 A CN201611029109 A CN 201611029109A CN 106441855 A CN106441855 A CN 106441855A
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 title claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- 239000002828 fuel tank Substances 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 45
- 238000001816 cooling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a testing system for the valve electric device life with a torque transmission screw rod and a horizontal support rod. The testing system comprises a to-be-tested valve electric device mounted on a workbench, wherein the workbench comprises a table board; the lower end of an output rotation shaft of the valve electric device is connected with a piston of an oil cylinder through the torque transmission screw rod; the lower end of the torque transmission screw rod passes through the table board to be connected with the piston; the horizontal support rod for keeping the stability of the torque transmission screw rod is mounted on the lower end part of the torque transmission screw rod; and the torque transmission screw rod passes through a nut sleeve and is in threaded fit connection with the nut sleeve. With the nut sleeve, the valve electric device can be stably fixed on the table board, and the stability of the torque transmission screw rod can be effectively kept so as to avoid the phenomenon of left-right shaking occurring when the torque transmission screw rod pulls the piston to go upward. The horizontal support rod is also used for keeping the stability of the torque transmission screw rod so as to avoid the phenomenon of left-right shaking occurring when the torque transmission screw rod pulls the piston to go upward.
Description
The application is Application No. 201410095101.1, and the applying date is on March 14th, 2014, and invention and created name is
A kind of divisional application of the application for a patent for invention of " electric device for valve life test rack ".
Technical field
The present invention relates to a kind of testing stand in electric device for valve life-span（It is also referred to as the test system in electric device for valve life-span
System）.
Background technology
Electric device for valve is to realize valve stroking, automatic control and the indispensable driving equipment of remote control, and common valve is electronic
The general efficiency of life test detection method that device manufacturing enterprise uses is low, test process is complicated, and dynamic is not in test parameter
Existing, precision cannot guarantee that, and needs personnel day and night on duty.
Press the true service requirement of valve, load characteristic as shown in Fig. 1, during electric device for valve life test, with run
Moment of torsion operates, and is closed with maximum control mode（I.e. in Fig. 1, vertical line is partly represented）.So control valve test can not be accurate
The real working condition of simulation valve.
Originally the electric device for valve life test rack of general enterprises is using disk spring simulation valve load, and the life-span tries
There are many shortcomings and require it is impossible to meet testing regulationss in process of testing.
Electrical control is using catalyst, Control discrete component and simple disk spring control device it is impossible to enter
The real-time data acquisition of row electric device for valve test, analysis and communication, moment of torsion is indirect measurement, that is, pass through electric device for valve
Upper force moment protection determines the form of peak torque it is impossible to read the real-time moment of torsion in running, so before each on-test
Need the debugging trimming process grown very much, reduce the accuracy of electric device for valve life test and require it is difficult to meet user.
Life test will be done 10000 times about, in order to shorten test period, typically takes the continuous work of electric device for valve
Make, so heating can be caused to increase for the electric device for valve motor of short time duty, ordinary test platform does not have circulating cooling
System, life test can only adopt artificial cooling, and labor intensity is very big, easily produces security incident.
Content of the invention
The technical problem to be solved in the present invention is：There is provided and a kind of there is moment of torsion pass on Gong the electric valve of leading screw and triatic stay
The pilot system of device lifetime, makes adjustment electric device for valve in ten thousand life test, the load characteristic of electric device for valve
The true running status that valve can be fully met requires.
The technical solution adopted for the present invention to solve the technical problems is：The moment of torsion that has of the present invention is passed on Gong leading screw and level
The pilot system in the life-span of the electric device for valve of strut（Hereinafter referred to as pilot system）Including workbench, electric valve to be measured dress
Put, be used for providing hydraulic control device and the electric control console loading moment of torsion, electric-controlled to electric device for valve to be measured
Operating board processed forms circuit with electric device for valve and hydraulic control device and workbench respectively and is connected.
Described hydraulic control device includes fuel tank, three-position four-way electromagnetic directional valve and oil cylinder, and 3-position 4-way electromagnetism changes
To valve, there is first interface, second interface, the 3rd interface and the 4th interface, described fuel tank and first interface pipeline connection,
Oil pump is provided with this pipeline, the oil-in of oil cylinder and oil-out respectively through pipeline and second interface and the 3rd orifice, the
Four interfaces are connected with fuel tank through oil return pipe, are provided with proportional pressure control valve on the pipeline of the oil return pipe between the 4th interface and fuel tank
And pressure transducer.
Described electric device for valve is installed on the table, and the output revolving shaft lower end of electric device for valve is through torque sensing
Device and torque drive leading screw are connected with the piston of oil cylinder, and described torque drive leading screw and workbench form screw thread cooperation, and moment of torsion passes
The upper end of dynamic leading screw is connected with output revolving shaft through torque sensor；Torque drive leading screw is by torque sensor drive and workbench
Nut screw rotate realize move up and down, thus driving the piston up-down of oil cylinder.
In life test, electric device for valve experiences the operation phase and loads rank described electric device for valve successively
Section, in load phase, moment of torsion that electric device for valve provides and there is linear ratio relation between the working time.
Further, described workbench includes four root posts of platen and bottom, and electric device for valve to be measured is through nut
Sleeve is arranged on platen, forms screw thread cooperation between torque drive leading screw and platen, and torque drive leading screw passes through ut socket
And be connected with ut socket screw thread.
Further, described torque drive leading screw lower end is connected through platen with piston, the lower end of torque drive leading screw
Portion is provided with the triatic stay for keeping torque drive leading screw stability, and triatic stay is coordinated with torque drive threads of lead screw,
The two ends of triatic stay are separately installed with copper sheathing, and the copper sheathing at two ends is contacted with the column of both sides respectively, and described copper sheathing is semicircle
Shape structure.
Further, described column is provided with upper limit position switch, lower position switch and loaded switches, loaded switches are located at
Between upper limit position switch and lower position switch, upper limit position switch, lower position switch and loaded switches are operated with electrical control respectively
Platform forms circuit and connects.
When copper sheathing is touched with upper limit position switch, torque drive leading screw stops up；When copper sheathing is touched with loaded switches,
Torque drive leading screw load operating；When copper sheathing is touched with lower position switch, torque drive leading screw stops descending.
When electric device for valve is in the operation phase, described copper sheathing is located between upper limit position switch and loaded switches；Valve
When valve electric device is in load phase, described copper sheathing is located between loaded switches and lower position switch.
Further, it is provided with for protecting three-position four-way electromagnetic directional valve to change on the pipeline of first interface entrance
To the first overflow valve of safety, the first described overflow valve is electromagnetic relief valve, and forms circuit with electric control console
Connect.
Further, the second overflow valve is communicated with the pipeline at fuel pump outlet.
Further, it is respectively arranged with one-way throttle valve on the pipeline of oil cylinder oil inlet mouth and oil-out.
Further, the pipeline between described fuel tank and three-position four-way electromagnetic directional valve is also equipped with filter and unidirectional
Valve, filter is arranged on the pipeline between oil pump and fuel tank.
Further, described electric control console includes industrial computer, PLC and expanding element, and this industrial computer has liquid
Brilliant display touch screen, PLC accepts the parameter that the data of industrial computer transmission and torque sensor are fed back, described proportional overflow
The proportional overflow output of valve adjusts and controls via the expanding element of PLC.
Further, described workbench is additionally provided with the cooling dress for being lowered the temperature to the motor of electric device for valve
Put.
The invention has the beneficial effects as follows：There is provided load torque, Ke Yiwei by hydraulic control device for electric device for valve
Electric device for valve simulates more real valve running status, improves the efficiency of electric device for valve test, makes to test
Journey becomes simpler, and test parameter is in Dynamic Announce, and accuracy also can be guaranteed, and automaticity is improved.
Using EVC touch panel computer and PLC, replace catalyst, relay control system, sensor and instrumentation are entered
Row real-time data acquisition, sets up the man machine interface of close friend simultaneously, so that whole pilot system operation is run simpler directly perceived, and
With real time modifying and monitoring control parameter, and can record and export.
Increase circulating water cooling device, the motor of timely coolant valve electric device is it is ensured that whole life test is smoothly complete
Become.
Torque drive leading screw is passed through ut socket and is connected with ut socket screw thread.Due to there being the presence of ut socket
Both electric device for valve can be firmly secured on platen, and can effectively keep the stability of torque drive leading screw again, keep away
Exempt from the phenomenon that torque drive leading screw double swerve when pulling piston stroking upward.The presence of triatic stay is also for guarantor
Hold the stability of torque drive leading screw, it is to avoid the lower end of torque drive leading screw double swerve when pulling piston stroking upward
Phenomenon.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the load characteristic schematic diagram of testing stand before transformation.
Fig. 2 is that the present invention adopts nominal moment of torsion to be less than load characteristic schematic diagram during 1200N.M electric device for valve.
Fig. 3 be present invention valve in use be opened to and close to the standard testing time schematic diagram.
Fig. 4 is the hydraulic principle figure in the hydraulic control device of the present invention.
Fig. 5 is the schematic diagram of pilot system of the present invention.
Fig. 6 is the attachment structure schematic diagram between the torque drive leading screw of the present invention and ut socket, workbench.
Fig. 7 is the overall control flow schematic diagram of pilot system of the present invention.
Labelling in above-mentioned accompanying drawing is as follows：Workbench 1, platen 11, column 12, upper limit position switch 13, lower position switch 14,
Loaded switches 15, chiller 5 ut socket 6, torque sensor 7, torque drive leading screw 8, triatic stay 9, slide block 91；Valve
Electric device 2, output revolving shaft 21；Hydraulic control device 3, fuel tank 31, three-position four-way electromagnetic directional valve 32, oil cylinder 33, oil pump 34,
Proportional pressure control valve 35, the first overflow valve 36, the second overflow valve 37, one-way throttle valve 38, filter 39, piston 331；Electrical control
Operating board 4.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only with
Illustration illustrates the basic structure of the present invention, and therefore it only shows the composition relevant with the present invention.
（Embodiment 1）
As shown in Fig. 4 to Fig. 6, the present embodiment with moment of torsion pass on Gong leading screw and triatic stay the electric device for valve life-span examination
Check system, including workbench 1, electric device for valve to be measured 2, the liquid for providing loading moment of torsion to electric device for valve 2 to be measured
Pressure control device 3 and electric control console 4, electric control console 4 respectively with electric device for valve 2 and hydraulic pressure control
Device 3 processed and workbench 1 form circuit and connect.
Hydraulic control device 3 includes fuel tank 31, three position four-way directional control valve 32 and oil cylinder 33,3-position 4-way electromagnetic switch
Valve 32 has first interface, second interface, the 3rd interface and the 4th interface, fuel tank 31 and first interface pipeline connection,
Oil pump 34 is provided with this pipeline, the oil-in of oil cylinder 33 and oil-out are connected with second interface and the 3rd interface through pipeline respectively
Logical, the 4th interface is connected with fuel tank 31 through oil return pipe, arranges on the pipeline of the oil return pipe between the 4th interface and fuel tank 31
Proportional overflow valve 35 and pressure transducer.
Electric device for valve 2 is arranged on workbench 1, and output revolving shaft 21 lower end of electric device for valve 2 is by moment of torsion
Turn-screw 8 is connected with the piston 331 of oil cylinder 33, and torque drive leading screw 8 and workbench 1 form screw thread cooperation, and moment of torsion passes
The upper end of dynamic leading screw 8 is connected transmission through torque sensor 7 with output revolving shaft 21；Torque drive leading screw 8 is through torque sensor 7
Drive and realize moving up and down with workbench 1 helical rotation, thus driving the piston 331 of oil cylinder 33 to move up and down；Valve to be measured
The moment of torsion that electric device 2 electric device for valve 2 provides is consistent with the torque characteristics under valve real work state.
Electric device for valve 2 bear piston catch bar 331 load moment of torsion tested when, electric device for valve 2 according to
Secondary experience operation phase and load phase, the moment of torsion providing in load phase, electric device for valve 2 and depositing between the working time
In linear ratio relation.
Workbench 1 includes four root posts 12 of platen 11 and bottom, and electric device for valve 2 to be measured is through ut socket 6
It is arranged on platen 11, between torque drive leading screw 8 and platen 11, forms screw thread cooperation, torque drive leading screw 8 passes through spiral shell
Mother sleeve 6 is simultaneously connected with ut socket 6 screw thread；Attachment structure between torque drive leading screw 8 and ut socket 6
For, axle sleeve is installed in ut socket 6, is formed by ball bearing between axle sleeve and ut socket 6 and be rotatably assorted, moment of torsion
Turn-screw 8 passes through axle sleeve and is to form screw thread cooperation with the inner ring of axle sleeve, and the presence one due to there being ut socket 6 is can
To be stably fixed to electric device for valve 2 on platen 11, two is can effectively to keep stablizing of torque drive leading screw 8
Property, it is to avoid torque drive leading screw 8 phenomenon of double swerve when pulling piston catch bar 331 up.
Torque drive leading screw 8 lower end is connected through platen 11 with piston 331, the bottom peace of torque drive leading screw 8
Equipped with the triatic stay 9 for keeping torque drive leading screw 8 stability, triatic stay 9 is joined with torque drive leading screw 8 spiral
Close, the two ends of triatic stay 9 are separately installed with copper sheathing 91, copper sheathing 91 is semicircular structure, and the copper sheathing 91 at two ends is respectively
Contact with the column 12 of both sides.Copper sheathing 91 is semicircular structure primarily to avoiding occurring jam between copper sheathing and column
Phenomenon.
The presence of triatic stay 9 is also for the stability keeping torque drive leading screw 8, it is to avoid torque drive leading screw 8
Lower end the phenomenon of double swerve occurs when pulling piston 331 up.
Upper limit position switch 13, lower position switch 14 and loaded switches 15 are provided with column 12, loaded switches 15 are located at
Between upper limit position switch 13 and lower position switch 14, upper limit position switch 13, lower position switch 14 and loaded switches 15 are respectively
Form circuit with electric control console 4 to be connected.
When copper sheathing 91 and upper limit position switch 13 touching, torque drive leading screw 8 stops up；When copper sheathing 91 and loading
During switch 15 touching, torque drive leading screw 8 load operating；When copper sheathing 91 and lower position switch 14 touching, torque drive
Leading screw 8 stops descending.
When electric device for valve 2 is in the operation phase, copper sheathing 91 is located at upper limit position switch 13 and loaded switches 15
Between, when electric device for valve 2 is in load phase, copper sheathing 91 is located between loaded switches 15 and lower position switch 14.
When copper sheathing 91 is contacted with loaded switches 15, PLC controls proportional pressure control valve work, thus piston is to torque drive
Leading screw 8 provides and loads moment of torsion, and the output revolving shaft 21 of electric device for valve 2 now starts load running, when copper sheathing 91 with
When loaded switches contact torque drive leading screw 8 stop descending.
It is provided with the pipeline of first interface entrance for protecting three-position four-way electromagnetic directional valve 32 commutation safety
The first overflow valve 36, the first overflow valve 36 is electromagnetic relief valve, and forms circuit with electric control console 4 and be connected.
Three-position four-way electromagnetic directional valve 32 can be made when commutation by this electromagnetic relief valve, by high pressure produced by backpressure circuit
Discharge, it is to avoid during commutation, to low pressure, input end, impact and impact input circuit oil pump etc. are low for the high pressure instantaneous herk at back pressure end
Pressure components and parts normal using it is ensured that the service life of hydraulic pressure input, the first overflow valve 36 undertakes 3-position 4-way electromagnetic switch
Valve 32 intelligent protection commutation function.
Second overflow valve 37 is communicated with the pipeline in oil pump 34 exit.In-line in the second overflow valve 37
On be provided with pressure gauge, the oil pressure of input can be controlled from oil pump 34 through the second overflow valve 37, stably enter first and connect
The oil pressure of the oil cylinder 33 during mouth, it is to avoid unstable oil pressure produces impact shadow to three-position four-way electromagnetic directional valve 32 grade components and parts
Ring.
One-way throttle valve 38 is respectively arranged with the pipeline of oil cylinder 33 oil-in and oil-out.Through two one-way throttle valves
38 normal works that may insure oil cylinder 33, make the piston 331 of oil cylinder 33 have stable oil pressure cntrol when flexible, keep away
Exempt from when oil cylinder piston 331 stretches, shake and tilt.Pipeline between fuel tank 31 and three-position four-way electromagnetic directional valve 32
On be also equipped with filter 39 and check valve, filter 39 is arranged on the pipeline between oil pump 34 and fuel tank 31, keep
The cleaning of oil cylinder 33 hydraulic oil, the Main Function of check valve be prevent hydraulic oil backflow fuel pump outlet, damage oil pump 34 it is ensured that
The hydraulic system of hydraulic control device 3 has stable oil pressure and is operated.
Chiller 5 for being lowered the temperature to the motor of electric device for valve 2 is additionally provided with workbench 1.In examination
During testing, electric device for valve 2 life test needs to do the long run test of 10000 times about, and electric device for valve 2
Motor be short time duty motor, long time continuous working motor can produce the phenomenon of heating, so on workbench 1
It is additionally provided with the chiller 5 for being lowered the temperature to the motor of electric device for valve 2, chiller 5 is used for timely cooling
The motor of electric device for valve 2 is it is ensured that whole life test smoothly completes.
Electric control console 4 includes industrial computer, PLC（Programmable Logic Controller）And expanding element, this industrial computer has liquid
Brilliant display touch screen, PLC accepts the parameter that the data of industrial computer transmission and torque sensor 7 are fed back, proportional pressure control valve
The 35 expanded unit of overflow ratio controls.Upper limit position switch 13, lower position switch 14 and loaded switches 15 respectively with PLC
Electrical connection, is controlled by PLC.
During practical operation, operator require the test parameterss of electric device for valve 2 by the liquid crystal on industrial computer
Show touch screen input industrial computer, |input paramete is modified changing by industrial computer, sends PLC to, PLC is by test parameterss and torsion
The torque parameter of the electric device for valve 2 of square sensor 7 Real-time Feedback is compared computing, after carrying out nonlinear compensation simultaneously
Send expanding element to, parameter is changed into normalized current and controls proportional pressure control valve 35, proportional pressure control valve 35 basis by expanding element
Input current adjusts the back pressure value in oil cylinder 33 backpressure circuit, and economy makes the piston 331 of oil cylinder 33 move up and down generation
Resistance changes, and the resistance of piston 331 changes the loading moment of torsion of control valve electric device 2, makes moment of torsion fully according to valve
The true torque loads characteristic variations run under working condition, this truth i.e. as shown in Fig. 2, electric device for valve 2
Loading procedure, that is, represented by figure oblique line portion.
As represented with thrust, run with 1/3rd maximum thrust, closed with maximum thrust, load characteristic such as Fig. 2
Shown.Electric device for valve 2 one open-one close is to operate once.The time often operating once is 40s.Open 10s, stop 10s, close
10s, stops 10s.Operation time characteristic is as shown in Fig. 3.
If electric device for valve 2 moment of torsion produces fluctuation because of interference, torque sensor 7 can make an immediate response, and PLC can be same
Step section proportional pressure control valve 35, makes the hydraulic pressure of backpressure circuit change the test requirements document meeting moment of torsion.The electricity of electric device for valve 2
The cooling control of machine is directly controlled according to temperature change by PLC.So overall control flow such as Fig. 7 institute of pilot system
Show.
Oil pressure in the hydraulic system of hydraulic control device 3, in proportional pressure control valve 35 control cylinder 33 outlet line
（The i.e. back pressure of oil cylinder 33）, proportional pressure control valve 35 can according to test requirements document change overfall size, complete control be located pipe
The oil pressure on road；The piston 331 of oil cylinder 33, during stretching out or retracting, can make oil through three-position four-way electromagnetic directional valve 32
The outlet line of cylinder 33 is all held on the oil return pipe at proportional pressure control valve 35 place.Hydraulic system provides the input of oil cylinder 33
Oil pressure, oil pump 34, the first overflow valve 36, each pressure gauge of the second overflow valve 37 form the input of hydraulic system；Proportional pressure control valve
Back pressure in 35 control cylinder 33 outlet line realizes moment of torsion proportion adjustment when high pressure is loaded, and pressure transducer is realized real
When monitor high pressure end pressure, complete monitor back pressure, connect electric control console 4 realize the protection to hydraulic system, their structures
Become back pressure outfan.
Pilot system can press the data point reuse load of setting automatically, and load characteristic is consistent with the true operation of valve, touches
Screen interface is convenient realizes operation and arranges, the real-time tracking of electric device for valve 2 output torque adjust control, subjects
Circulating cooling, electric device for valve 2 load and process data recording Automated condtrol process.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely various change and modification can be carried out in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description it is necessary to determine its technical scope according to right.
Claims (1)
1. a kind of have moment of torsion and pass on Gong the electric device for valve service life experiment system of leading screw and triatic stay, including workbench（1）、
Electric device for valve to be measured（2）, for electric device for valve to be measured（2）The hydraulic control device loading moment of torsion is provided（3）With
And electric control console（4）, electric control console（4）Respectively with electric device for valve（2）And hydraulic control device（3）With
And workbench（1）Form circuit to connect；It is characterized in that：
Described hydraulic control device（3）Including fuel tank（31）, three-position four-way electromagnetic directional valve（32）And oil cylinder（33）, three
Four-way electromagnetic reversing valve（32）There is first interface, second interface, the 3rd interface and the 4th interface, described fuel tank（31）With
One interface pipeline connection, is provided with oil pump on this pipeline（34）, oil pump（34）For low voltage component；Oil cylinder（33）Oil-in and
, respectively through pipeline and second interface and the 3rd orifice, the 4th interface is through oil return pipe and fuel tank for oil-out（31）Connection, the
Four interfaces and fuel tank（31）Between the pipeline of oil return pipe on be provided with proportional pressure control valve（35）And pressure transducer；Positioned at first
It is provided with for protecting three-position four-way electromagnetic directional valve on the pipeline of interface entrance（32）First overflow valve of commutation safety
（36）, positioned at oil pump（34）Second overflow valve is communicated with the pipeline in exit（37）；The first described overflow valve（36）For electricity
Magnetic overflow valve, and and electric control console（4）Form circuit to connect；3-position 4-way electromagnetism can be made by this electromagnetic relief valve
Reversal valve（32）When commutation, high pressure produced by backpressure circuit is discharged, it is to avoid the high pressure wink at back pressure end during commutation
When be loaded into low pressure, input end；Hydraulic system provides oil cylinder（33）Input oil pressure, oil pump（34）, the first overflow valve（36）,
Two overflow valves（37）Each pressure gauge forms the input of hydraulic system；Proportional pressure control valve（35）In control cylinder (33) outlet line
The back pressure moment of torsion proportion adjustment of realizing when high pressure is loaded, pressure transducer realizes monitor in real time high pressure end pressure, completes prison
Control back pressure, connects electric control console（4）Realize the protection to hydraulic system, they constitute back pressure outfan；
Described electric device for valve（2）It is arranged on workbench（1）On, electric device for valve（2）Output revolving shaft（21）Lower end
By torque drive leading screw（8）With oil cylinder（33）Piston（331）Connect, described torque drive leading screw（8）With workbench（1）Formed
Screw thread coordinates, torque drive leading screw（8）Upper end through torque sensor（7）With output revolving shaft（21）Connect transmission；Torque drive
Leading screw（8）Through torque sensor（7）Drive and workbench（1）Helical rotation is realized moving up and down, thus driving oil cylinder（33）'s
Piston（331）Move up and down；
Described electric device for valve（2）In life test, electric device for valve（2）Experience operation phase and loading rank successively
Section, in load phase, electric device for valve（2）There is provided moment of torsion and there is linear ratio relation between the working time；
Described workbench（1）Including platen（11）Four root posts with bottom（12）, electric device for valve to be measured（2）Through nut
Sleeve（6）It is arranged on platen（11）On, torque drive leading screw（8）With platen（11）Between formed screw thread cooperation, torque drive silk
Thick stick（8）Through ut socket（6）And and ut socket（6）Screw thread is connected；
Described torque drive leading screw（8）Lower end passes through platen（11）With piston（331）Connect, torque drive leading screw（8）Under
End is provided with for keeping torque drive leading screw（8）The triatic stay of stability（9）, triatic stay（9）With torque drive silk
Thick stick（8）Screw thread coordinates, triatic stay（9）Two ends be separately installed with copper sheathing（91）, the copper sheathing at two ends（91）Respectively with both sides
Column（12）Contact, described copper sheathing（91）For semicircular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029109.3A CN106441855B (en) | 2014-03-14 | 2014-03-14 | The pilot system in the electric device for valve service life with torque drive leading screw and triatic stay |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029109.3A CN106441855B (en) | 2014-03-14 | 2014-03-14 | The pilot system in the electric device for valve service life with torque drive leading screw and triatic stay |
| CN201410095101.1A CN103940595B (en) | 2014-03-14 | 2014-03-14 | A valve electric device life test bench |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410095101.1A Division CN103940595B (en) | 2014-03-14 | 2014-03-14 | A valve electric device life test bench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106441855A true CN106441855A (en) | 2017-02-22 |
| CN106441855B CN106441855B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611029109.3A Expired - Fee Related CN106441855B (en) | 2014-03-14 | 2014-03-14 | The pilot system in the electric device for valve service life with torque drive leading screw and triatic stay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441855B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840635A (en) * | 2017-02-27 | 2017-06-13 | 广东东箭汽车用品制造有限公司 | A kind of electronic strut test device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7028705B1 (en) * | 2003-01-28 | 2006-04-18 | Barksdale, Inc. | High torque failsafe valve operator |
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| CN106441855B (en) | 2018-08-17 |
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