CN201636310U - Piston mechanism for hydraulic cylinder - Google Patents
Piston mechanism for hydraulic cylinder Download PDFInfo
- Publication number
- CN201636310U CN201636310U CN2010203018998U CN201020301899U CN201636310U CN 201636310 U CN201636310 U CN 201636310U CN 2010203018998 U CN2010203018998 U CN 2010203018998U CN 201020301899 U CN201020301899 U CN 201020301899U CN 201636310 U CN201636310 U CN 201636310U
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- CN
- China
- Prior art keywords
- piston
- annular groove
- piston rod
- screw
- hydraulic cylinder
- 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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Abstract
The utility model discloses a piston mechanism for a hydraulic cylinder, comprising a piston and a piston rod which are mutually connected along the axial direction, wherein an annular groove is arranged on the piston rod, the piston is provided with a screw hole along the radial direction, the piston and the piston rod are connected through a connecting screw which is arranged in the screw hole in a penetration way, the connection end of the connecting screw is blocked in the annular groove, and a positioning piece is arranged between the connection end of the connecting screw and the annular groove. The piston mechanism for the hydraulic cylinder has simple and compact structure, low cost, reduced processing difficulty and convenient installation.
Description
Technical field
The utility model is mainly concerned with the oil hydraulic cylinder field, refers in particular to a kind of piston mechanism.
Background technique
A kind of connecting mode that piston and piston rod often adopt in oil hydraulic cylinder is a scyewed joint.In this connecting mode, generally to lock, to prevent thread looseness, piston and piston rod break away from.At present, oil hydraulic cylinder is in the structure of piston rod and piston thread connection, in order to lock, generally to take piston rod and piston end face to play junction of the edges of two sheets of paper screw and lock with urgent and decide screw and radially pass the annular groove of piston body on piston rod and lock dual mode.Referring to Fig. 1, in preceding a kind of Placement, the end face of piston rod 3 and piston 2 is played junction of the edges of two sheets of paper screw 7 and is locked, for this locking mode, because must assemble piston 2 earlier and piston rod 3 is played junction of the edges of two sheets of paper screw 7 again, be easy to generate iron filings like this, be difficult to clean out fully; And easily pollute erecting yard and fluid, cause the serious consequence of oil hydraulic cylinder scuffing of cylinder bore pull bar damage, and increased assembler's labor intensity simultaneously.Referring to Fig. 2, in a kind of Placement in back, shortcoming is that because of machining error annular groove 4 centers that attachment screw 1 is dropped on the piston rod 3 fully are relatively more difficult, attachment screw 1 often occurs and can not snap in annular groove 4 fully, the insecure phenomenon of locking effect.
The model utility content
The technical problems to be solved in the utility model just is: at the technical problem that prior art exists, the utility model provide a kind of simple and compact for structure, with low cost, reduced difficulty of processing, oil hydraulic cylinder piston mechanism easy for installation.
For solving the problems of the technologies described above, the utility model by the following technical solutions.
A kind of oil hydraulic cylinder piston mechanism, comprise interconnective in the axial direction piston and piston rod, offer annular groove on the described piston rod, described piston offer screw in the radial direction, described piston links to each other by the attachment screw that is arranged in the screw with piston rod, the connecting end of described attachment screw is arranged in the annular groove, it is characterized in that: be provided with locating piece between the connecting end of described attachment screw and the annular groove.
As further improvement of the utility model:
Described locating piece is locking ball or Tapered Cup.
Compared with prior art, advantage of the present utility model just is: the utility model oil hydraulic cylinder piston mechanism, simple and compact for structure, with low cost, easy for installation, the connecting end that guarantees screw by locating piece is accurately located and is arranged in the annular groove, realize automatic capturing position, reach the convenient and reliable purpose of locking, also reduced machining accuracy and difficulty of processing.
Description of drawings
Fig. 1 is the structural representation of first kind of mode in the prior art;
Fig. 2 is the structural representation of the second way in the prior art;
Fig. 3 is a structural representation of the present utility model.
Marginal data
1, attachment screw; 2, piston; 3, piston rod; 4, annular groove; 5, screw; 6, locating piece; 7, junction of the edges of two sheets of paper screw.
Embodiment
Below with reference to specific embodiment and Figure of description the utility model is described in further details.
As shown in Figure 3, oil hydraulic cylinder piston mechanism of the present utility model, comprise interconnective in the axial direction piston 2 and piston rod 3, offer annular groove 4 on the piston rod 3, piston 2 offer screw 5 in the radial direction, piston 2 links to each other by the attachment screw 1 that is arranged in the screw 5 with piston rod 3, and the connecting end of attachment screw 1 is arranged in the annular groove 4, is provided with locating piece 6 between the connecting end of attachment screw 1 and the annular groove 4.In the present embodiment, locating piece 6 can adopt locking ball or Tapered Cup.In use, piston rod 3 and piston 2 are screwed the back in the screw 5 of piston 2, put into a location steel ball, tighten attachment screw 1 again, locking ball is fallen in the annular groove 4 on the piston rod 3, kill locking ball by attachment screw 1, reach convenient, the reliable purpose of locking.
The above only is a preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to the foregoing description, and all technological schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be understood that; for those skilled in the art; in the some improvements and modifications that do not break away under the utility model principle prerequisite; for example be provided with screw 5 and locating piece 6 or the like in the above the utility model of two covers along the radially loading of piston rod 3, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. oil hydraulic cylinder piston mechanism, comprise interconnective in the axial direction piston (2) and piston rod (3), offer annular groove (4) on the described piston rod (3), described piston (2) offer screw (5) in the radial direction, described piston (2) links to each other by the attachment screw (1) that is arranged in the screw (5) with piston rod (3), the connecting end of described attachment screw (1) is arranged in the annular groove (4), it is characterized in that: be provided with locating piece (6) between the connecting end of described attachment screw (1) and the annular groove (4).
2. oil hydraulic cylinder piston mechanism according to claim 1 is characterized in that: described locating piece (6) is locking ball or Tapered Cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203018998U CN201636310U (en) | 2010-01-29 | 2010-01-29 | Piston mechanism for hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203018998U CN201636310U (en) | 2010-01-29 | 2010-01-29 | Piston mechanism for hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636310U true CN201636310U (en) | 2010-11-17 |
Family
ID=43080802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203018998U Expired - Fee Related CN201636310U (en) | 2010-01-29 | 2010-01-29 | Piston mechanism for hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636310U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032236A (en) * | 2011-01-17 | 2011-04-27 | 江阴市洪腾机械有限公司 | Hydraulic cylinder of double piston rods |
| CN102817879A (en) * | 2012-08-29 | 2012-12-12 | 三一重工股份有限公司 | Hydro-pneumatic spring cylinder and engineering vehicle |
| CN104006161A (en) * | 2013-02-26 | 2014-08-27 | 盐城纺织职业技术学院 | Nose end invisible sealing cover structure |
| CN105257626A (en) * | 2015-11-09 | 2016-01-20 | 无锡市长江液压缸厂 | Piston connection anti-looseness structure used for hydraulic cylinder |
-
2010
- 2010-01-29 CN CN2010203018998U patent/CN201636310U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032236A (en) * | 2011-01-17 | 2011-04-27 | 江阴市洪腾机械有限公司 | Hydraulic cylinder of double piston rods |
| CN102817879A (en) * | 2012-08-29 | 2012-12-12 | 三一重工股份有限公司 | Hydro-pneumatic spring cylinder and engineering vehicle |
| CN102817879B (en) * | 2012-08-29 | 2015-09-30 | 三一重工股份有限公司 | Hydro-pneumatic spring cylinder and engineering vehicle |
| CN104006161A (en) * | 2013-02-26 | 2014-08-27 | 盐城纺织职业技术学院 | Nose end invisible sealing cover structure |
| CN105257626A (en) * | 2015-11-09 | 2016-01-20 | 无锡市长江液压缸厂 | Piston connection anti-looseness structure used for hydraulic cylinder |
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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: 20101117 Termination date: 20180129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |