CN205388065U - Heavy pneumatic cylinder and piston position detecting element thereof - Google Patents
Heavy pneumatic cylinder and piston position detecting element thereof Download PDFInfo
- Publication number
- CN205388065U CN205388065U CN201620223461.XU CN201620223461U CN205388065U CN 205388065 U CN205388065 U CN 205388065U CN 201620223461 U CN201620223461 U CN 201620223461U CN 205388065 U CN205388065 U CN 205388065U
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- position sensor
- lock portion
- detection unit
- piston
- piston position
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Abstract
The utility model relates to a heavy pneumatic cylinder and piston position detecting element thereof. The position sensor subtotal locking part that piston position detecting element set gradually including the front and back, the position sensor part is used for built -in position sensor, the cover is equipped with O type seal ring between the position sensor subtotal locking part, and the locking part diameter at O type seal ring rear is greater than the position sensor part. The utility model discloses directly arranging position sensor in the cylinder body inboard, not receiving the cylinder body influence of wall thickness, directly realized heavy pneumatic cylinder piston stroke, the testing result does not receive long -term reciprocating motion of cylinder body and mechanical structure's the influence of warping gradually moreover.
Description
Technical field
This utility model belongs to heavy hydraulic cylinder and controls technical field, and particularly a kind of heavy hydraulic cylinder and piston position detection thereof are single.
Background technology
Hydraulic drive is using fluid as working media, and fluid enters the hydraulic cylinder sealed, and produces active force because being squeezed and promotes piston to rise, weight jack-up is done work；It is under Gravitative Loads that piston returns downwards, and fluid flows back to fuel tank, and piston drops to original position.
In the middle of actual use, the motion of piston needs monitored, namely needs the carrying out of the movement position to piston to detect, to realize the feedback of control and the restriction to piston run location.
For conventional hydraulic cylinder, due to the small volume of cylinder body, thrust is less, so detection mode is multiple, relatively simple.Owing to conventional hydraulic cylinder tube wall is relatively thin, it is possible to directly installing magnetic induction sensor on hydraulic cylinder body outer wall, when piston is through sensor position, sensor can produce corresponding signal.This scheme is subject to cylinder body and moves back and forth the impact deformed gradually with frame for movement throughout the year, and the sensor of outer wall, often after a period of time that worked, cannot carry out effectively accurately detecting and controlling, can not meet actually detected demand and requirement.
For heavy hydraulic cylinder, the pressure in cylinder is prosperous can up to or over 500bar, and the volume of cylinder body itself is also relatively large, and casing wall is also relatively thick, adopts the detection means of conventional hydraulic cylinder cannot realize effective detection.
Summary of the invention
The purpose of this utility model is to provide a kind of piston position detection unit, for the problem solving the monitoring of heavy hydraulic cylinder piston stroke.Meanwhile, this utility model additionally provides the heavy hydraulic cylinder of this unit a kind of.
Scheme of the present utility model includes:
A kind of piston position detection unit, including before and after the position sensor part that sets gradually and lock portion, position sensor part is for a built-in position sensor；Being arranged with O grommet type seal circle between described position sensor part and lock portion, the lock portion diameter at O grommet type seal circle rear is more than described position sensor part.
Further, described lock portion is provided with external screw thread.
Further, described position sensor is magnetic induction sensor.
Further, described position sensor is photoelectric sensor, and described piston position detection unit front end face is transparent end face.
A kind of heavy hydraulic cylinder, cylinder body offers at least one through hole, seals adaptation and install a piston position detection unit in through hole；Described piston position detection unit includes position sensor part and the lock portion that front and back set gradually, and position sensor part is used for a built-in position sensor, and described lock portion is used for and through hole locking assembling；Being arranged with O grommet type seal circle between described position sensor part and lock portion, the lock portion diameter at O grommet type seal circle rear is more than described position sensor part.
Further, described lock portion and described through hole corresponding position Screw assembly.
Further, described position sensor is magnetic induction sensor.
Further, described position sensor is photoelectric sensor, and described piston position detection unit front end face is transparent end face.
Further, described cylinder body is offered two through holes, lays respectively at oil cylinder two ends.
Position sensor is placed directly within inside cylinder body by this utility model, not by cylinder body influence of wall thickness, is directly realized heavy hydraulic cylinder piston stroke, and testing result is not moved back and forth the impact deformed gradually with frame for movement by cylinder body throughout the year.And, position sensor of the present utility model is also not limited only to magnetic induction sensor, owing to being placed directly within oil cylinder, additionally it is possible to adopt other kinds of position sensor.
Accompanying drawing explanation
Fig. 1 is hydraulic cylinder figure of the present utility model；
Fig. 2 is the structure chart of piston position of the present utility model detection unit.
Detailed description of the invention
Heavy hydraulic oil cylinder embodiment
Heavy hydraulic oil cylinder as shown in Figure 1 and Figure 2, cylinder body is offered two through holes, lays respectively at oil cylinder two ends, and one is used for indicating measurement starting point 1, and another is used for indicating measurement terminal 2.The quantity offering through hole is relevant with the piston position of setting detection element number, as other embodiments, it is also possible to offer one or more.
Seal in through hole, adaptation is provided with piston position detection unit, and this piston position detection unit is as in figure 2 it is shown, left side is inside cylinder body 7, and right side is outside cylinder body 7, with left side for front, after right side is.Piston position detects position sensor part 3 and the lock portion 4 that unit is set gradually by front and back.Embedded position sensor in position sensor part.The non-bulging cylinder body medial surface of front end face of position sensor part, in order to avoid impacting piston 8 motion.Lock portion 4 adopts screw-threaded coupling mode and through hole to fix.Lock portion 4 front end 5 diameter is more than position sensor part, and this part is previously used for a sheathed O RunddichtringO 9.O RunddichtringO realizes the sealing of through hole, when having assembled in through-holes, as in figure 2 it is shown, in the angle of 15-30 ° before and after sealing ring.
Concrete, when selecting the position being suitable for carry out cylinder body perforate, it should be noted that the machining accuracy of perforate has higher requirement, in general, diameter of bore is 10mm, and machining tolerance requires within H8, i.e. 10+-0.022mm/-0.00, so, can keep higher seal in screw thread aspect of fitting.
In the process that sensor is installed, except improving the machining accuracy of screw thread, increase rubber washer also to be able to very effective stop spilling of hydraulic oil, the packing ring of quality of rubber materials that suggestion uses O type one-tenth-value thickness 1/10 to be 1.5mm, the packing ring of this scope can effectively play oil sealing seal and can fit comparatively closely processing screw thread simultaneously.
In above example, the position sensor of use can be magnetic inductive, it is also possible to be photo-electric, if photoelectric sensor, it should design attitude Sensor section front end face is transparent.
By the transformation that this technology is novel, the context of detection of the sector is many again a kind of effective technical approach, it is subject to the lasting technology innovation of electric product, it is possible to can couple together with the remote information communication of industry 4.0, accomplish upgrading again of basis mechanized equipment simultaneously.
Piston position detection unit embodiment
Owing to above example describing in detail piston position detection unit, therefore no longer individually it is introduced.
Claims (9)
1. a piston position detection unit, it is characterised in that the position sensor part set gradually before and after including and lock portion, position sensor part is used for a built-in position sensor；Being arranged with O grommet type seal circle between described position sensor part and lock portion, the lock portion diameter at O grommet type seal circle rear is more than described position sensor part.
2. a kind of piston position detection unit according to claim 1, it is characterised in that described lock portion is provided with external screw thread.
3. a kind of piston position detection unit according to claim 1 and 2, it is characterised in that described position sensor is magnetic induction sensor.
4. a kind of piston position detection unit according to claim 1 and 2, it is characterised in that described position sensor is photoelectric sensor, and described piston position detection unit front end face is transparent end face.
5. a heavy hydraulic cylinder, it is characterised in that offer at least one through hole on cylinder body, seals adaptation and installs a piston position detection unit in through hole；Described piston position detection unit includes position sensor part and the lock portion that front and back set gradually, and position sensor part is used for a built-in position sensor, and described lock portion is used for and through hole locking assembling；Being arranged with O grommet type seal circle between described position sensor part and lock portion, the lock portion diameter at O grommet type seal circle rear is more than described position sensor part.
6. a kind of heavy hydraulic cylinder according to claim 5, it is characterised in that described lock portion and described through hole corresponding position Screw assembly.
7. a kind of heavy hydraulic cylinder according to claim 5 or 6, it is characterised in that described position sensor is magnetic induction sensor.
8. a kind of heavy hydraulic cylinder according to claim 5 or 6, it is characterised in that described position sensor is photoelectric sensor, described piston position detection unit front end face is transparent end face.
9. a kind of heavy hydraulic cylinder according to claim 5, it is characterised in that offer two through holes on described cylinder body, lay respectively at oil cylinder two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620223461.XU CN205388065U (en) | 2016-03-22 | 2016-03-22 | Heavy pneumatic cylinder and piston position detecting element thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620223461.XU CN205388065U (en) | 2016-03-22 | 2016-03-22 | Heavy pneumatic cylinder and piston position detecting element thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205388065U true CN205388065U (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620223461.XU Expired - Fee Related CN205388065U (en) | 2016-03-22 | 2016-03-22 | Heavy pneumatic cylinder and piston position detecting element thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205388065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236844A (en) * | 2018-11-19 | 2019-01-18 | 阿尔法（江苏）重工科技有限公司 | Metallurgical clamp connection |
| 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 |
-
2016
- 2016-03-22 CN CN201620223461.XU patent/CN205388065U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109236844A (en) * | 2018-11-19 | 2019-01-18 | 阿尔法（江苏）重工科技有限公司 | Metallurgical clamp connection |
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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: 20160720 Termination date: 20210322 |