CN105952714A - Externally arranged displacement sensor for dynamic testing of hydraulic cylinder - Google Patents
Externally arranged displacement sensor for dynamic testing of hydraulic cylinder Download PDFInfo
- Publication number
- CN105952714A CN105952714A CN201610543882.5A CN201610543882A CN105952714A CN 105952714 A CN105952714 A CN 105952714A CN 201610543882 A CN201610543882 A CN 201610543882A CN 105952714 A CN105952714 A CN 105952714A
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- CN
- China
- Prior art keywords
- sleeve
- displacement sensor
- pressing plate
- hydraulic cylinder
- displacement transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
Abstract
The invention relates to an externally arranged displacement sensor for dynamic testing of a hydraulic cylinder. The externally arranged displacement sensor comprises trigger parts and measuring parts, wherein the trigger parts comprise a pressing plate and a pressing block; the measuring parts comprise a mounting seat, a displacement sensor and a sleeve; the sleeve is vertically mounted on the upper end face of the mounting seat; the displacement sensor is vertically limited and mounted inside the sleeve in a sliding manner; the upper end face of a vertical and upward striker of the displacement sensor is in contact with the bottom surface of the pressing block; the pressing block is connected with one end of the horizontally arranged pressing plate; and a fixing blot is embedded at the other end of the pressing plate. According to the externally arranged displacement sensor, a piston of the hydraulic cylinder moves in a small range to touch the striker through the pressing plate and the pressing block, the displacement sensor outputs multiple signals, and the signals can be stored, analyzed or utilized for curve drawing, and the like; and during utilization, the externally arranged displacement sensor is convenient to carry, disassemble and assemble, the volume is small, the requirement on the on-site utilization environment is relatively low, the testing accuracy is high, the length of the pressing plate is adjustable, the placing manner and position of the hydraulic cylinder are flexible, and the externally arranged displacement sensor is applicable to dynamic performance testing of hydraulic cylinders of various models.
Description
Technical field
The invention belongs to hydraulic cylinder dynamic test equipment structure technical field of improvement, especially a kind of hydraulic cylinder dynamic test is with external
Formula displacement transducer.
Background technology
Hydraulic energy is changed into mechanical energy by hydraulic cylinder, the advantage with simple in construction, reliable operation, is widely used various
In hydraulic system.Hydraulic cylinder needs through multiple test to guarantee its steady operation, in loopback test, can use hydraulic cylinder certainly
The displacement transducer of band, this displacement transducer is for following the tracks of the position of piston rod, and when dynamic test, needs reactant liquor cylinder pressure
Step response in very thin tail sheep and frequency response, in the dynamic performance testing of the most positive and negative 2.5 millimeters, hydraulic cylinder carries
The precision of displacement transducer cannot meet the requirement of dynamic test.In order to solve this problem, some producer develops external
Displacement transducer, but it there is problems in that 1. certain structures are excessively simple, and displacement transducer cannot keep stable with hydraulic cylinder
Connection, cause certainty of measurement to decline；2. certain structures is the most complicated, operation inconvenience during installation, is unfavorable for maintenance.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that simple installation, measurement accurately and adapt to plurality of specifications hydraulic pressure
A kind of hydraulic cylinder dynamic test external displacement transducer of cylinder test.
The present invention adopts the technical scheme that:
A kind of hydraulic cylinder dynamic test external displacement transducer, it is characterised in that: include trigger unit and measure parts, institute
Stating trigger unit and include pressing plate and briquetting, described measurement parts include mounting seat, displacement transducer and sleeve, in described mounting seat
End face vertical installs sleeve, the most spacing institute's displacement sensors that is slidably installed in sleeve, this displacement transducer vertically hitting the most upward
Pin upper surface contacts with described briquetting bottom surface, and briquetting connects one end of the pressing plate of horizontally set, and the other end setting-in one of pressing plate is solid
Determine bolt；
Described fixing bolt is used for being fixed on hydraulic cylinder bottom surface to be measured, described pressing plate for make briquetting stable be pressed in described striker
Upper surface, described mounting seat is for holding position displacement sensor straight up.
And, one end of described pressing plate is fixed positioned on a screw rod being vertically arranged by nut, and institute is installed in the lower end of this screw rod
State briquetting.
And, at described sleeve upper end open, a gland is installed, a vertically-mounted guide cylinder in this gland, this guide cylinder inner edge is sliding
Dynamic installation one slip cap, is embedded in described displacement transducer in this slip cap, this slip cap lower end is positioned at sleeve and is pressed on sleeve
The upper end of the spring that interior lower section is installed, the end top of the lock-screw of described guide cylinder outer rim setting-in is pressed in slip cap outer rim and will lead
Fix spacing to cylinder and slip cap.
And, the lower end of displacement transducer is positioned at the sleeve below described slip cap lower end and connects the letter that self installation seat installs
Number line.Advantages of the present invention and good effect be:
The present invention, is cooperated by slip cap and guide cylinder in the sleeve in mounting seat and makes the vertical spacing peace of sliding of displacement transducer
Being contained in sleeve, the striker top of displacement transducer upper end is pressed in the bottom surface of briquetting, and briquetting is connected by screw rod, pressing plate and fixing bolt
Connecing the bottom surface of hydraulic cylinder, hydraulic cylinder piston carries out the movement of little scope, and touches striker by pressing plate, briquetting, makes displacement sensing
Device exports multiple signals, and these signals can carry out storing, analyzing or draw curve etc..During use, it is simple to carry and dismount,
The little requirement to the environment of onsite application of volume is relatively low, and measuring accuracy is high, pressing plate adjustable length, the modes of emplacement of hydraulic cylinder and position
Put flexibly, it is adaptable to the test of various model hydraulic cylinder dynamic properties.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 state diagram when using.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, it is impossible to
Protection scope of the present invention is limited with following embodiment.
A kind of hydraulic cylinder dynamic test external displacement transducer, as shown in Figure 1, 2, the innovation of the present invention is: include touching
Sending out parts and measure parts, described trigger unit includes that pressing plate 2 and briquetting 5, described measurement parts include mounting seat 18, displacement
Sensor 7 and sleeve 15, the vertically-mounted sleeve in described mounting seat upper surface, in sleeve, the most spacing described displacement that is slidably installed passes
Sensor, this displacement transducer striker 6 upper surface the most upward contacts with described briquetting bottom surface, and briquetting connects horizontally set
One end of pressing plate, the other end setting-in one of pressing plate fixes bolt 1；Described fixing bolt is used for being fixed on hydraulic cylinder 20 bottom surface to be measured,
Described pressing plate for making the stable upper surface being pressed in described striker of briquetting, described mounting seat for holding position displacement sensor vertically to
On.
In the present embodiment, one end of described pressing plate is fixed positioned on a screw rod 4 being vertically arranged by nut 3, this screw rod
Described briquetting is installed in lower end.
At described sleeve upper end open, 13 install a gland 12, a vertically-mounted guide cylinder 11, this guide cylinder inner edge in this gland
Be slidably installed a slip cap 9, is embedded in described displacement transducer in this 8 to lower end, slip cap upper end 14, and this slip cap lower end is positioned at
In sleeve and be pressed on the upper end of the spring 16 that lower section in sleeve is installed, the end of the lock-screw 10 of described guide cylinder outer rim setting-in
End top is pressed in slip cap outer rim and is directed to cylinder and slip cap is fixed spacing.
The lower end of displacement transducer is positioned at the sleeve below described slip cap lower end and connects the holding wire that self installation seat installs
19.Mounting seat mounting flange 17 branch sleeve by its upper surface.
Displacement transducer upper end is connected with striker, in order to recorded the shift value of oil cylinder by the change of striker；Lower end and spring contact,
Holding wire passes from centre, in the outlet of mounting seat side；Sleeve and guide pipe ensure that sensor vertical is placed, sliding by regulation
Dynamic set, spring and lock-screw change the vertical height of displacement transducer, to adapt to the application of differing heights oil cylinder.
Fixing bolt, screw rod, pressing plate and briquetting constitute displacement transducer connecting tooling, screw rod and briquetting cooperation can be uncomfortable
Displacement transducer position is regulated, it is achieved displacement is finely tuned in the case of joint lock-screw；The briquetting supercharging contact area of striker, expands
The big scope of application of displacement transducer.
Before Shi Yan, piston rod is all regained, the present invention is installed, striker is adjusted to a rational position, thus avoids piston
When bar is all regained, sensor is caused damage；
Test system start-up, adjustment hydraulic cylinder is positioned at Position Approximate during frequency characteristic test, before on-test, piston should be made complete
Being fully-operational of stroke, by cylinder bubble discharge, then by automatic control system or manual by the way of be adjusted, make liquid
Cylinder pressure is in correct original position.
The present invention, is cooperated by slip cap and guide cylinder in the sleeve in mounting seat and makes the vertical spacing peace of sliding of displacement transducer
Being contained in sleeve, the striker top of displacement transducer upper end is pressed in the bottom surface of briquetting, and briquetting is connected by screw rod, pressing plate and fixing bolt
Connecing the bottom surface of hydraulic cylinder, hydraulic cylinder piston carries out the movement of little scope, and touches striker by pressing plate, briquetting, makes displacement sensing
Device exports multiple signals, and these signals can carry out storing, analyzing or draw curve etc..During use, it is simple to carry and dismount,
The little requirement to the environment of onsite application of volume is relatively low, and measuring accuracy is high, pressing plate adjustable length, the modes of emplacement of hydraulic cylinder and position
Put flexibly, it is adaptable to the test of various model hydraulic cylinder dynamic properties.
Claims (4)
1. a hydraulic cylinder dynamic test external displacement transducer, it is characterised in that: include trigger unit and measure parts,
Described trigger unit includes that pressing plate and briquetting, described measurement parts include mounting seat, displacement transducer and sleeve, described mounting seat
The vertically-mounted sleeve in upper surface, the most spacing institute's displacement sensors that is slidably installed in sleeve, this displacement transducer is vertically the most upward
Striker upper surface contacts with described briquetting bottom surface, and briquetting connects one end of the pressing plate of horizontally set, the other end setting-in one of pressing plate
Fixing bolt；
Described fixing bolt is used for being fixed on hydraulic cylinder bottom surface to be measured, described pressing plate for make briquetting stable be pressed in described striker
Upper surface, described mounting seat is for holding position displacement sensor straight up.
A kind of hydraulic cylinder dynamic test external displacement transducer the most according to claim 1, it is characterised in that: described
One end of pressing plate is fixed positioned on a screw rod being vertically arranged by nut, and described briquetting is installed in the lower end of this screw rod.
A kind of hydraulic cylinder dynamic test external displacement transducer the most according to claim 1, it is characterised in that: described
One gland is installed at sleeve upper end open, a vertically-mounted guide cylinder in this gland, this guide cylinder inner edge is slidably installed a slip cap,
Being embedded in described displacement transducer in this slip cap, this slip cap lower end is positioned at sleeve and is pressed on the spring that sleeve lower section is installed
Upper end, the end top of lock-screw of described guide cylinder outer rim setting-in is pressed in slip cap outer rim and is directed to cylinder and slip cap is fixed
Spacing.
A kind of hydraulic cylinder dynamic test external displacement transducer the most according to claim 3, it is characterised in that: displacement
The lower end of sensor is positioned at the sleeve below described slip cap lower end and connects the holding wire that self installation seat installs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543882.5A CN105952714B (en) | 2016-07-12 | 2016-07-12 | A kind of hydraulic cylinder dynamic test external displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543882.5A CN105952714B (en) | 2016-07-12 | 2016-07-12 | A kind of hydraulic cylinder dynamic test external displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105952714A true CN105952714A (en) | 2016-09-21 |
| CN105952714B CN105952714B (en) | 2018-08-31 |
Family
ID=56899682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610543882.5A Active CN105952714B (en) | 2016-07-12 | 2016-07-12 | A kind of hydraulic cylinder dynamic test external displacement sensor |
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| Country | Link |
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| CN (1) | CN105952714B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203629608U (en) * | 2013-10-24 | 2014-06-04 | 长沙星欣机械设备有限公司 | Pressure displacement sensing device used for hollow jack |
| CN204064273U (en) * | 2014-08-14 | 2014-12-31 | 河北高达电子科技有限公司 | Bridge prestress displacement detector |
| CN104501689A (en) * | 2014-12-01 | 2015-04-08 | 柳州市桥厦工程管材有限公司 | Displacement ruler protection device with guidance function |
| CN204357842U (en) * | 2014-12-12 | 2015-05-27 | 武汉理工大学 | A kind of oil hydraulic cylinder displacement signal being applicable to engineering machinery detects auxiliary device |
| CN204829183U (en) * | 2015-04-29 | 2015-12-02 | 杭州鑫高科技有限公司 | Stressing jack displacement sensor magnetism mounting bracket |
| CN105384103A (en) * | 2015-12-28 | 2016-03-09 | 湖南联智桥隧技术有限公司 | Displacement sensor used for tensioning jack |
| CN205918703U (en) * | 2016-07-12 | 2017-02-01 | 天津优瑞纳斯液压机械有限公司 | External displacement sensor is used to pneumatic cylinder dynamic testing |
-
2016
- 2016-07-12 CN CN201610543882.5A patent/CN105952714B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203629608U (en) * | 2013-10-24 | 2014-06-04 | 长沙星欣机械设备有限公司 | Pressure displacement sensing device used for hollow jack |
| CN204064273U (en) * | 2014-08-14 | 2014-12-31 | 河北高达电子科技有限公司 | Bridge prestress displacement detector |
| CN104501689A (en) * | 2014-12-01 | 2015-04-08 | 柳州市桥厦工程管材有限公司 | Displacement ruler protection device with guidance function |
| CN204357842U (en) * | 2014-12-12 | 2015-05-27 | 武汉理工大学 | A kind of oil hydraulic cylinder displacement signal being applicable to engineering machinery detects auxiliary device |
| CN204829183U (en) * | 2015-04-29 | 2015-12-02 | 杭州鑫高科技有限公司 | Stressing jack displacement sensor magnetism mounting bracket |
| CN105384103A (en) * | 2015-12-28 | 2016-03-09 | 湖南联智桥隧技术有限公司 | Displacement sensor used for tensioning jack |
| CN205918703U (en) * | 2016-07-12 | 2017-02-01 | 天津优瑞纳斯液压机械有限公司 | External displacement sensor is used to pneumatic cylinder dynamic testing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105952714B (en) | 2018-08-31 |
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