CN101476577A - Oil cylinder with position self-checking function - Google Patents
Oil cylinder with position self-checking function Download PDFInfo
- Publication number
- CN101476577A CN101476577A CNA2009100581916A CN200910058191A CN101476577A CN 101476577 A CN101476577 A CN 101476577A CN A2009100581916 A CNA2009100581916 A CN A2009100581916A CN 200910058191 A CN200910058191 A CN 200910058191A CN 101476577 A CN101476577 A CN 101476577A
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- oil cylinder
- cylinder
- piston
- magnetic induction
- checking function
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Abstract
The invention discloses an oil cylinder with position self-checking function, which comprises an oil cylinder base, an oil cylinder barrel, a guide sleeve, at least one oil inlet valve, a piston rod and a piston, and is characterized in that the piston is provided with a magnetic ring, the outer wall of the oil cylinder barrel is provided with at least one magnetic induction sensor, and each magnetic induction sensor is provided with two external circuit ports. Because a length sensor which flexes synchronously with the oil cylinder is not needed to be arranged inside or outside the oil cylinder, the oil cylinder has the advantages of simple structure, compactness, high reliability, low cost, high detection precision, good universality and convenient installation and debugging.
Description
Technical field
The present invention relates to a kind of oil cylinder with position self-checking function.
Background technique
At present, the oil cylinder of band position self-checking function all adopt in oil cylinder or outside a linear transducer with the oil cylinder synchronization telescope is installed, according to the flexible length difference of oil cylinder, the signal value that linear transducer output is different, thereby the collapsing length of definite relevant oil cylinder, the oil cylinder of this position self-checking function, manufacture cost is high, the cylinder structure complexity, and reliability is low, the Installation and Debugging trouble is converted to corresponding oil cylinder collapsing length value difficulty with the linear transducer output signal value.
Summary of the invention
The objective of the invention is to above-mentioned deficiency at prior art, provide a kind of simple in structure, compact, reliability is high, with low cost, testing precision is high, versatility good, Installation and Debugging are easily with the oil cylinder of position self-checking function.
For achieving the above object, the oil cylinder of band position self-checking function of the present invention, comprise cylinder pedestal, cylinder tube, guide sleeve, at least one oiling valve, piston rod and piston, it is characterized in that on piston, being provided with a magnet ring, at the cylinder tube outer wall at least one magnetic induction sensor is housed, each magnetic induction sensor is provided with two external circuits ports;
Working principle of the present invention is: during use, two external circuits ports of each magnetic induction sensor are linked to each other with resistance or voltage check device; When piston rod drives piston and magnet ring moves, when moving to the central lines of the center line of magnet ring and magnetic induction sensor and its distance less than the parameter of design, the detected value of this resistance or voltage check device can accurately detect position of piston by infinitely great vanishing; Also two external circuits ports can be linked to each other with the input end of controller,, realize the automatic control of relevant device the source of two external circuits ports as control signal;
As a further improvement on the present invention, described oiling valve is provided with two and be equilibrium valve, is installed on cylinder pedestal and the cylinder tube the linking to each other with each self-corresponding joint on being arranged at cylinder pedestal by pipeline respectively into and out of hydraulic fluid port of two equilibrium valves respectively; By two joints and two equilibrium valves, can realize being used in combination of stationarity that piston moves and a plurality of oil cylinders;
As a further improvement on the present invention, to be positioned at the outer termination of cylinder tube be disc to described piston rod; Be convenient to being connected of piston rod and other parts;
In sum, the present invention since need be in oil cylinder or outside a linear transducer with the oil cylinder synchronization telescope is installed, have simple in structure, compact, reliability is high, with low cost, testing precision is high, versatility good, Installation and Debugging advantage easily.
Description of drawings
Fig. 1 is the plan view of the embodiment of the invention one.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the plan view of the embodiment of the invention two.
Fig. 5 is the plan view of Fig. 4.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Embodiment one
By Fig. 1, Fig. 2 and shown in Figure 3, the oil cylinder of this embodiment's band position self-checking function, comprise cylinder pedestal 1, cylinder tube 2, guide sleeve 3, be installed on oiling valve 4 and oiling valve 5, piston rod 6 and piston 7 on cylinder pedestal 1 and the cylinder tube 2 respectively, on piston 7, be provided with a magnet ring 10, on cylinder tube 2 outer walls, upper magnetic induction sensor 11 and the next magnetic induction sensor 12 are housed by fitting seat, two magnetic induction sensors 11 and 12 are equipped with two external circuits ports, and it is disc that described piston rod 6 is positioned at cylinder tube 2 outer terminations;
The internal structure of above-mentioned upper magnetic induction sensor 11 or the next magnetic induction sensor 12 is a prior art, different types is arranged, wherein better simply a kind of employing is dry reed-pipe, be a kind of passive electronic switching element that the contact is arranged, have simple in structure, volume is urinated in advantages such as controls, and the elastic spring electroplax of two ironys is housed in the shell, and also irritating has a kind of inert gas that is metal rhodium; At ordinary times, two reeds in the shell separate, and an end of a reed is connected with the lighting outlet as an external circuits port, and an end of another reed is connected with the shell as another external circuits port; When the magnetic induction sensor, under the effect of magnetic field magnetic line, two reeds in the shell are magnetized and attract each other as magnetic substance, and the end that two reeds are adjacent will be pulled together, the circuit communication that two external circuits ports are connect; After outer magnetic force disappeared, two reeds were owing to the elasticity of itself is separated, and circuit has also just disconnected;
During use, two magnetic induction sensors 11 and two external circuits ports of 12 are linked to each other with multimeter (not shown) as detection device respectively; Move by two oiling valves 4,5 control piston bars, 6 drive pistons 7 and magnet ring 10, when the central lines of the center line that moves to magnet ring 10 and upper magnetic induction sensor 11 or the next magnetic induction sensor 12 and its distance during less than the parameter of design, detected resistance of multimeter or magnitude of voltage can accurately detect the position of piston 7 by infinitely great vanishing;
Embodiment two
By Fig. 4 and shown in Figure 5, the oil cylinder of this embodiment's band position self-checking function, comprise cylinder pedestal 1, cylinder tube 2, guide sleeve 3, be installed on upper equilibrium valve 13 and the next equilibrium valve 14 on cylinder pedestal 1 and the cylinder tube 2 respectively, piston rod 6 and piston 7, two equilibrium valves 13,14 filler opening links to each other with joint 8 on being arranged at cylinder pedestal 1 by pipeline respectively, two equilibrium valves 13,14 oil outlet links to each other with joint 9 on being arranged at cylinder pedestal 1 by pipeline respectively, on piston 7, be provided with a magnet ring 10, on cylinder tube 2 outer walls, upper magnetic induction sensor 11 and the next magnetic induction sensor 12 are housed by fitting seat, two magnetic induction sensors 11 and 12 are equipped with two external circuits ports, and described piston rod 6 is positioned at cylinder tube 2 outer terminations 15 and is disc;
This embodiment's oil cylinder not only can accurately detect the position of piston 7, adds attached controlling component, and hydraulic oil is by two joints 8 or 9, two equilibrium valves 13 or 14 and can realize being used in combination of stationarity that piston 7 moves and a plurality of oil cylinders.
Claims (3)
1. oil cylinder with position self-checking function, comprise cylinder pedestal, cylinder tube, guide sleeve, at least one oiling valve, piston rod and piston, it is characterized in that on piston, being provided with a magnet ring, at the cylinder tube outer wall at least one magnetic induction sensor is housed, each magnetic induction sensor is provided with two external circuits ports.
2. the oil cylinder of band position self-checking function as claimed in claim 1, it is characterized in that described oiling valve is provided with two and be equilibrium valve, be installed on cylinder pedestal and the cylinder tube the linking to each other with each self-corresponding joint on being arranged at cylinder pedestal by pipeline respectively of two equilibrium valves respectively into and out of hydraulic fluid port.
3. the oil cylinder of band position self-checking function as claimed in claim 1 or 2 is characterized in that it is disc that described piston rod is positioned at the outer termination of cylinder tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100581916A CN101476577A (en) | 2009-01-17 | 2009-01-17 | Oil cylinder with position self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100581916A CN101476577A (en) | 2009-01-17 | 2009-01-17 | Oil cylinder with position self-checking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101476577A true CN101476577A (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100581916A Pending CN101476577A (en) | 2009-01-17 | 2009-01-17 | Oil cylinder with position self-checking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101476577A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013033886A1 (en) * | 2011-09-05 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Method, apparatus, and system for measuring length of boom oil cylinder |
| CN103759002A (en) * | 2013-12-31 | 2014-04-30 | 中冶海水淡化投资有限公司 | Water hydraulic cylinder piston with safety device |
| EP2881608A3 (en) * | 2013-11-08 | 2016-04-20 | Schaeffler Technologies AG & Co. KG | Fixed cover central clutch release for a hydraulic or pneumatic clutch actuating device, in particular for a motor vehicle |
| CN105626621A (en) * | 2016-03-28 | 2016-06-01 | 安徽五洋机床制造有限公司 | Hydraulic bending machine oil cylinder with stroke adjusting function |
| CN105673618A (en) * | 2016-04-06 | 2016-06-15 | 北京航天发射技术研究所 | Hydraulic cylinder in-place detection device based on magnetic induction transmission |
| CN106089842A (en) * | 2016-06-16 | 2016-11-09 | 苏州安特实业有限公司 | A kind of hydraulic cylinder structure |
| CN109530652A (en) * | 2018-11-08 | 2019-03-29 | 贵州华昌汽车电器有限公司 | A kind of plug-in type stainless steel sensor oil cylinder of die casting |
| CN109958670A (en) * | 2019-03-18 | 2019-07-02 | 科大方诚(杭州)智能科技有限公司 | A kind of novel servo oil cylinder |
-
2009
- 2009-01-17 CN CNA2009100581916A patent/CN101476577A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013033886A1 (en) * | 2011-09-05 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Method, apparatus, and system for measuring length of boom oil cylinder |
| EP2881608A3 (en) * | 2013-11-08 | 2016-04-20 | Schaeffler Technologies AG & Co. KG | Fixed cover central clutch release for a hydraulic or pneumatic clutch actuating device, in particular for a motor vehicle |
| CN103759002A (en) * | 2013-12-31 | 2014-04-30 | 中冶海水淡化投资有限公司 | Water hydraulic cylinder piston with safety device |
| CN103759002B (en) * | 2013-12-31 | 2016-07-06 | 中冶海水淡化投资有限公司 | The fool proof water hydraulic cylinder piston of a kind of band |
| CN105626621A (en) * | 2016-03-28 | 2016-06-01 | 安徽五洋机床制造有限公司 | Hydraulic bending machine oil cylinder with stroke adjusting function |
| CN105673618A (en) * | 2016-04-06 | 2016-06-15 | 北京航天发射技术研究所 | Hydraulic cylinder in-place detection device based on magnetic induction transmission |
| CN105673618B (en) * | 2016-04-06 | 2018-04-13 | 北京航天发射技术研究所 | A kind of hydraulic cylinder based on magnetic induction sender is to level detecting apparatus |
| CN106089842A (en) * | 2016-06-16 | 2016-11-09 | 苏州安特实业有限公司 | A kind of hydraulic cylinder structure |
| CN109530652A (en) * | 2018-11-08 | 2019-03-29 | 贵州华昌汽车电器有限公司 | A kind of plug-in type stainless steel sensor oil cylinder of die casting |
| CN109958670A (en) * | 2019-03-18 | 2019-07-02 | 科大方诚(杭州)智能科技有限公司 | A kind of novel servo oil cylinder |
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Open date: 20090708 |