CN204082774U - The contactless hydraulic jack of a kind of accurate displacement - Google Patents
The contactless hydraulic jack of a kind of accurate displacement Download PDFInfo
- Publication number
- CN204082774U CN204082774U CN201420597477.8U CN201420597477U CN204082774U CN 204082774 U CN204082774 U CN 204082774U CN 201420597477 U CN201420597477 U CN 201420597477U CN 204082774 U CN204082774 U CN 204082774U
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- CN
- China
- Prior art keywords
- displacement
- piston
- piston rod
- digital sensors
- hydraulic jack
- 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.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Actuator (AREA)
Abstract
The contactless hydraulic jack of a kind of accurate displacement, comprise cylinder barrel and stretch into piston rod wherein and piston by cylinder cap, described piston rod central authorities are provided with hollow duct and end face mounting point magnet, and are isolated by non magnetic pad between described position magnet and piston rod; Install digital sensors bottom described cylinder barrel, described digital sensors is installed displacement inductive rod, described displacement inductive rod stretches in described hollow duct and the two can produce non-contacting axial relative displacement with the movement of piston.Compared with prior art, the utility model adopts built-in non-contact sensor device, instead of original touch sensor and outer displacement sensor, oil cylinder adopts to be installed without friction, measure the displacement of oil cylinder by contactless position magnet, have that technique is simple, displacement measurement accurately, the advantage of long service life.
Description
Technical field
The utility model relates to hydraulic jack field, specifically the contactless hydraulic jack of a kind of accurate displacement double-action.
Background technique
At present, the measurement of hydraulic cylinder piston rod stroke and displacement is mainly by external contact formula displacement transducer, there are two kinds of defects in actual use, one, the design of contact-type causes sensor to wear and tear comparatively fast because there is friction, and working life is short, the design of its two external is not suitable for using under the condition of extraneous bad environments, the environment that such as high temperature, high pressure, high dust and soda acid are larger, it two is directly exposed in external environment, easily mechanical failure occurs; To sum up there is the defect that working life is short, environmental suitability is poor in prior art, needs to improve.
Model utility content
The purpose of this utility model is exactly the defect existed for prior art, provides a kind of long service life, environmental suitability strong and measures the contactless hydraulic jack of accurate displacement accurately.
The technical solution of the utility model is: comprise cylinder barrel and stretch into piston rod wherein and piston by cylinder cap, described piston rod central authorities are provided with hollow duct and end face mounting point magnet, and are isolated by non magnetic pad between described position magnet and piston rod; Install digital sensors bottom described cylinder barrel, described digital sensors is installed displacement inductive rod, described displacement inductive rod stretches in described hollow duct and the two can produce non-contacting axial relative displacement with the movement of piston.
Described digital sensors is provided with the wiring harness interface for being connected with outer connected control system.
Compared with prior art, the utility model adopts built-in non-contact sensor device, instead of original touch sensor and outer displacement sensor, oil cylinder adopts to be installed without friction, measure the displacement of oil cylinder by contactless position magnet, have that technique is simple, displacement measurement accurately, the advantage of long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
1. piston rod, 2. cylinder cap, 3. hydraulic fluid port, 4. cylinder barrel, 5. displacement inductive rod, 6. piston, 7. position magnet, 8. digital sensors, 9. wiring harness interface, 10. lining.
Embodiment
With reference to Fig. 1, the contactless hydraulic jack of a kind of accurate displacement, comprise cylinder barrel 4 and stretch into piston rod 1 wherein and piston 6 by cylinder cap 2, piston rod 1 central authorities are provided with hollow duct and end face mounting point magnet 7, and are isolated by non magnetic pad between position magnet 7 and piston rod 1; Digital sensors 8 is installed bottom cylinder barrel 4, displacement inductive rod 5 is installed in one end of digital sensors 8, the other end is provided with wiring harness interface 9 for being connected with outer connected control system, and displacement inductive rod 5 stretches in hollow duct and the two can produce non-contacting axial relative displacement with the movement of piston 6.
Above-mentioned hydraulic jack working principle is: mobile displacement inductive rod 5 and the position magnet 7 of driving of piston 6 does relative displacement, the magnetic field induction pulse propagation of position magnet 7 is to digital sensors 8, digital sensors 8 converts electrical signal transfer to again to outside control system, thus reaches the action of precise hard_drawn tuhes oil hydraulic cylinder.
The utility model mainly adopts digital sensors and simple mounting type, instead of original touch sensor and outer displacement sensor, accurately can measure the displacement of oil cylinder, thus improve the productivity of machine operation process, usability and workmanship.The utility model oil cylinder adopts to be installed without friction, and measure physical location by contactless position magnet, safe and reliable measurement is accurate, and sensor absolute type working principle can guarantee reliable reading, and without the need to reference point or again demarcate.The machined rear weld seam of oil cylinder is seamless, flawless, if more than 1.5 of its intensity strength of parent times, substantially avoid the damage of weld seam interface to cylinder seal part, there is manufacturing process simple, oil cylinder displacement measurement is accurate, long service life, oil cylinder efficiency high is the ideal product that machine realizes precise hydraulic control.
Claims (2)
1. the contactless hydraulic jack of accurate displacement, comprise cylinder barrel and stretch into piston rod wherein and piston by cylinder cap, it is characterized in that: described piston rod central authorities are provided with hollow duct and end face mounting point magnet, and are isolated by non magnetic pad between described position magnet and piston rod; Install digital sensors bottom described cylinder barrel, described digital sensors is installed displacement inductive rod, described displacement inductive rod stretches in described hollow duct and the two can produce non-contacting axial relative displacement with the movement of piston.
2. accurate displacement hydraulic jack according to claim 1, is characterized in that: described digital sensors is provided with the wiring harness interface for being connected with outer connected control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597477.8U CN204082774U (en) | 2014-10-16 | 2014-10-16 | The contactless hydraulic jack of a kind of accurate displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597477.8U CN204082774U (en) | 2014-10-16 | 2014-10-16 | The contactless hydraulic jack of a kind of accurate displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082774U true CN204082774U (en) | 2015-01-07 |
Family
ID=52175497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420597477.8U Expired - Fee Related CN204082774U (en) | 2014-10-16 | 2014-10-16 | The contactless hydraulic jack of a kind of accurate displacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265735A (en) * | 2014-10-16 | 2015-01-07 | 山东同力液压装备有限公司 | Precise-displacement non-contact hydraulic cylinder |
| CN104895863A (en) * | 2015-05-18 | 2015-09-09 | 合肥长源液压股份有限公司 | Servo hydraulic cylinder with integral cylinder bottom |
-
2014
- 2014-10-16 CN CN201420597477.8U patent/CN204082774U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265735A (en) * | 2014-10-16 | 2015-01-07 | 山东同力液压装备有限公司 | Precise-displacement non-contact hydraulic cylinder |
| CN104895863A (en) * | 2015-05-18 | 2015-09-09 | 合肥长源液压股份有限公司 | Servo hydraulic cylinder with integral cylinder bottom |
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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 |
Granted publication date: 20150107 Termination date: 20191016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |