CN205478671U - Special test bench of self locking hydraulic cylinder - Google Patents
Special test bench of self locking hydraulic cylinder Download PDFInfo
- Publication number
- CN205478671U CN205478671U CN201620011280.0U CN201620011280U CN205478671U CN 205478671 U CN205478671 U CN 205478671U CN 201620011280 U CN201620011280 U CN 201620011280U CN 205478671 U CN205478671 U CN 205478671U
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- oil
- cylinder
- self locking
- valve
- hydraulic cylinder
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- Expired - Fee Related
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Abstract
The utility model provides a special test bench of self locking hydraulic cylinder comprises hydraulic system, test system. Hydraulic system includes hydraulic pump, filter, heater, cooler, your bi -pass magenetic exchange valve, tribit cross magenetic exchange valve, check valve, overflow valve, loading jar, the self locking hydraulic cylinder that awaits measuring, pressure switch etc. The test system includes increment formula photoelectric encoder, temperature sensor, pressure sensor, oil temperature fuzzy controller, computer, printer, display screen, data memory, interface circuit etc. The rotational speed that can test exit flow and pressure, the pump of self locking hydraulic cylinder's resistance to pressure, pump turns to and at the oil -break with leak under the oil condition, will you please self locking hydraulic cylinder lean on self locking piece locking piston rod.
Description
Technical field
This utility model relates to mechanical-hydraulic field, is specifically related to a kind of self locking hydraulic cylinder Special test platform.
Background technology
In hydraulic system, during using hydraulic cylinder as executor, it is sometimes desirable to making hydraulic cylinder at an arbitrary position or a certain fixed position keeps stopping and bearing certain carrying, the most conventional descaling locking circuit realizes this purpose.But at the special dimension such as aviation, military affairs, such as aircraft door, each of submarine separates cabin etc., cannot meet its reliability requirement by oil pressure locking.They need executor's working position be equipped with high accuracy, long-time shutdown and without any change in displacement, safety is good, uses descaling locking circuit not reach this requirement, needs to use self-locking hydraulic cylinder.In order to make the performance of self-locking hydraulic cylinder meet the demand of production, provide performance foundation to this cylinder, it is necessary to this cylinder is tested by special testing stand simultaneously.
Summary of the invention
This utility model solves the technical problem that and is to provide a kind of special self locking hydraulic cylinder Special test platform, detection in the case of oil-break and leakage of oil self locking hydraulic cylinder can latching ram bar, the resistance to pressure of self locking hydraulic cylinder can also be tested, the rotating speed importing and exporting flow and pressure, pump of hydraulic pump turns to simultaneously.
This utility model solves the scheme that the problems referred to above are used: a kind of self locking hydraulic cylinder Special test platform, is made up of hydraulic system, test system.Described hydraulic system is made up of fuel tank, filter, hydraulic pump, hydraulic cylinder, solenoid directional control valve, choke valve, overflow valve, photoswitch etc..Described test system is made up of interface circuit, computer, data collecting card, increment photoelectric code disk, various sensor, direction judgment circuit etc..
Loading cylinder is set, tested self locking hydraulic cylinder is loaded and carries out pressure test, and be provided with F.F. work enter rewind automatic switching loop for loading cylinder, shorten the load time, reduce the hydraulic shock during loading and unloading.
Using increment photoelectric code disk as the Rotating speed measring feedback element of hydraulic pump, calculate rotating speed according to output umber of pulse.Arranging direction judgment circuit, it is determined that hydraulic pump turns to, described direction judgment circuit is with 74LS40175D trigger for sentencing to element, and direction judgment circuit photoelectric code disk is connected, and described photoelectric code disk is connected with 74LS40175D trigger.
Arranging oil temperature fuzzy controller, temperature can affect hydraulic oil viscosity, and test accuracy is produced impact.Described oil temperature fuzzy controller, it is possible to increase temperature control precision, and then improve the accuracy of test.
Pressure, flow, temperature etc. use sensor to detect, and testing stand can pass through each measured parameter of computer controlled automatic, can instant playback, automatically record and the data of printing detection.
Compared with prior art, the utility model has the advantage of: can carry out hydraulic cylinder loading pressure test, temperature accurately controls to improve the accuracy of test, judge that hydraulic pump turns to, in the case of oil-break and leakage of oil can be tested, can self locking hydraulic cylinder lean on self lock dog latching ram bar, it is possible to by each measured parameter of computer controlled automatic, instant playback, automatically record and the data of printing detection.
Accompanying drawing explanation
Fig. 1 is hydraulic system principle figure of the present utility model.
Fig. 2 is test principle figure of the present utility model.
Fig. 3 is direction judgment circuit schematic diagram of the present utility model.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of self locking hydraulic cylinder Special test platform is made up of hydraulic system and test system.Wherein hydraulic system includes that loading oil supply cylinder hydraulic pump 1, tested oil supply cylinder hydraulic pump 2, inlet oil filter 3, heater 4, cooler 5, bi-bit bi-pass solenoid directional control valve 9, three-position four-way electromagnetic directional valve 6, check valve 7, external control overflow valve 8, internal control overflow valve 10, loading cylinder 11, self locking hydraulic cylinder to be measured 12, pressure switch 16, return filter 18, fuel tank 19 are formed by connecting by pipeline.Test system includes that increment photoelectric code disk 13, temperature sensor 14, pressure transducer 15, oil temperature fuzzy controller 20, computer 21, printer 22, display screen 23, data storage 24, interface circuit 25 are formed by connecting.Wherein the input of increment photoelectric code disk 13 is connected with hydraulic pump 1,2, oil temperature fuzzy controller 20 is connected with heater 4, cooler 5, and the outfan of increment photoelectric code disk 13, temperature sensor 14, pressure transducer 15 are connected with computer by interface circuit 25.Computer 21 is connected by data/address bus with printer 22, display screen 23, data storage 24.
Operation principle of the present utility model is, no load test: the 6YA of solenoid directional control valve 6-2 obtains electric, fluid enters self locking hydraulic cylinder 12 to be measured through inlet oil filter 3-2, hydraulic pump 2, solenoid directional control valve 6-2, check valve 7-4, for the process of locking, the 5YA of solenoid directional control valve 6-2 obtains electric, fluid flows back to fuel tank 19, for releasing process through solenoid directional control valve 6-2, check valve 7-3 return filter 18-2.
Voltage-withstand test: after self locking hydraulic cylinder 12 is locked, the 1YA of solenoid directional control valve 6-1 obtains electric, fluid forms differential connection through inlet oil filter 3-1, hydraulic pump 1, the rodless cavity of solenoid directional control valve 6-1, check valve 7-1 entrance loading cylinder 11 and rod chamber, piston rod quickly stretches out, when the piston rod of loading cylinder 11 is close to self locking hydraulic cylinder 12 to be measured, controlled 3YA by the photoelectric proximity switch 17 being arranged near self locking hydraulic cylinder 12 and obtain electric, differential connection is disconnected by two position two-way valve 9-1, the piston rod of loading cylinder 11 close to self locking hydraulic cylinder 12 to be measured, loads to it slowly.The parameters such as pressure, flow, temperature are recorded by sensor, and surveyed data are in interface circuit is transported to computer, and by data-printing, storage, instant playback on screen.
Oil-break is tested: solenoid directional control valve 6-2 is in middle position, the fluid that hydraulic pump 2 provides flows back to fuel tank 19 through inlet oil filter 3-2, solenoid directional control valve 6-2, return filter 18-2, effect due to check valve 7-3 and 7-4, fluid in self locking hydraulic cylinder 12 to be measured can not reflux, test is in the case of oil-break, and can self locking hydraulic cylinder lean on self lock dog latching ram bar.
After whole test process completes, the 2YA of solenoid directional control valve 6-1 obtains electric, load the fluid in cylinder 11 rod chamber, start to be back in fuel tank 19, in rod chamber, pressure reduces, make pressure switch 16 action, the 4YA controlling two position two-way valve 9-2 obtains electric, overflow valve 8 outside control mouth is connected with fuel tank 19, the least pressure just can turn on, so that the piston rod loading cylinder 11 is quickly return, the 5YA of solenoid directional control valve 6-2 obtains electric, fluid in self locking hydraulic cylinder 12 to be measured also flows back to fuel tank 19, oil-in at two hydraulic circuits arranges overflow valve, ensure security of system.At hydraulic cylinder two ends, the hydraulic shock during overflow valve 10 can reduce two hydraulic cylinders 11,12 oil-feed and oil return is set.
Test system uses increment photoelectric code disk 13 as the Rotating speed measring feedback element of hydraulic pump.The corner of hydraulic pump is converted into count pulse by increment photoelectric code disk 13, draws rotating speed by count pulse.Increment photoelectric code disk 13 has three-way output signal A, B, Z, wherein A pulse and B pulse 90 ° of phase places of difference.A 90 ° of phase places of pulse advance B pulse, for rotating forward, otherwise then for reversion.As shown in Figure 3, A, B pulse that increment photoelectric code disk 13 is exported, it is separately input to D end and the CK end of 74LS401175D trigger, then the output Q of trigger is 1 (rotating forward) or 0 (reversion), the outfan of trigger is connected with digital quantity input port, judge corresponding bit values, determine turning to of hydraulic pump.
In test process, the accuracy of test is had a certain impact by the fluctuation of oil temperature.This utility model utilizes computer fuzzy control device 20 to establish fluid thermostatic control system.The error of the setting value of oil temperature and setting value with actual value being separately input to after computer fuzzy control device 20 processes, output signal flows to heater and cooler and oil temperature is carried out thermostatic control.
Being more than embodiment of the present utility model, it is noted that for the ordinary skill in the art, without departing from the principles of the present invention, it is also possible to make various deformation and improvement, this also should be considered as this protection domain of the present utility model.
Claims (1)
- null1. a self locking hydraulic cylinder Special test platform，It is made up of hydraulic system and test system，It is characterized in that: described hydraulic system includes loading oil supply cylinder hydraulic pump、Tested oil supply cylinder hydraulic pump、Inlet oil filter、Heater、Cooler、Bi-bit bi-pass solenoid directional control valve、Three-position four-way electromagnetic directional valve、Check valve、External control overflow valve、Internal control overflow valve、Load cylinder、Self locking hydraulic cylinder to be measured、Pressure switch、Return filter、Fuel tank，The oil-in of described loading oil supply cylinder hydraulic pump and tested oil supply cylinder hydraulic pump is connected with the oil-out of inlet oil filter respectively，Load the oil-out of oil supply cylinder hydraulic pump and the tested oil supply cylinder hydraulic pump oil-in respectively with external control overflow valve and three-position four-way electromagnetic directional valve to be connected，The described oil-out of external control overflow valve is connected with the oil-in of return filter，The outside control mouth of external control overflow valve is connected with fuel tank by a bi-bit bi-pass solenoid directional control valve，The oil-out of described three-position four-way electromagnetic directional valve is connected with the oil-in of check valve，The oil-out of described check valve respectively with load cylinder and the rod chamber of self locking hydraulic cylinder to be measured、Load cylinder and the rodless cavity of self locking hydraulic cylinder to be measured、Internal control overflow valve oil-in connects，The rod chamber of described loading cylinder is connected by a bi-bit bi-pass solenoid directional control valve with rodless cavity，The oil-in of described inlet oil filter、The oil-out of return filter、The oil-out of internal control overflow valve、Load the rod chamber of cylinder、The rod chamber of self locking hydraulic cylinder to be measured is connected with fuel tank by oil pipe，Described heater、The input of cooler is connected with fuel tank，Described test system includes increment photoelectric code disk、Temperature sensor、Pressure transducer、Oil temperature fuzzy controller、Computer、Printer、Display screen、Data storage、Interface circuit，The input of described increment photoelectric code disk and loading oil supply cylinder hydraulic pump、Tested oil supply cylinder hydraulic pump connects，Described pressure transducer input and loading cylinder、The rod chamber of self locking hydraulic cylinder to be measured and rodless cavity connect，The input of described temperature sensor is connected with fuel tank，The outfan of temperature sensor is connected with the input of oil temperature fuzzy controller，The outfan of oil temperature fuzzy controller and cooler and the input of heater、The input of computer、The input of temperature sensor connects，The outfan of described pressure transducer and increment photoelectric code disk is connected with the input of interface circuit，The outfan of interface circuit is connected with the input of computer，The outfan of computer is connected with printer and display screen respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620011280.0U CN205478671U (en) | 2016-01-07 | 2016-01-07 | Special test bench of self locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620011280.0U CN205478671U (en) | 2016-01-07 | 2016-01-07 | Special test bench of self locking hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478671U true CN205478671U (en) | 2016-08-17 |
Family
ID=56664612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620011280.0U Expired - Fee Related CN205478671U (en) | 2016-01-07 | 2016-01-07 | Special test bench of self locking hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478671U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762890A (en) * | 2017-01-23 | 2017-05-31 | 中南大学 | A kind of test bed hydraulic control system of multifunction hydraulic |
| CN107741332A (en) * | 2017-11-07 | 2018-02-27 | 安徽博流体传动股份有限公司 | A kind of vehicle damping system hydraulic pressure comprehensive test platform |
| CN109386515A (en) * | 2018-12-06 | 2019-02-26 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large_sized hydraulic cylinder testing stand |
-
2016
- 2016-01-07 CN CN201620011280.0U patent/CN205478671U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762890A (en) * | 2017-01-23 | 2017-05-31 | 中南大学 | A kind of test bed hydraulic control system of multifunction hydraulic |
| CN106762890B (en) * | 2017-01-23 | 2018-01-30 | 中南大学 | A kind of test bed hydraulic control system of multifunction hydraulic |
| CN107741332A (en) * | 2017-11-07 | 2018-02-27 | 安徽博流体传动股份有限公司 | A kind of vehicle damping system hydraulic pressure comprehensive test platform |
| CN107741332B (en) * | 2017-11-07 | 2023-09-15 | 安徽博一流体传动股份有限公司 | Hydraulic comprehensive test bed for vehicle damping system |
| CN109386515A (en) * | 2018-12-06 | 2019-02-26 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large_sized hydraulic cylinder testing stand |
| CN109386515B (en) * | 2018-12-06 | 2024-03-19 | 哈工新欧(岳阳)测控装备有限公司 | Energy-saving large-sized hydraulic cylinder test bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170107 |