CN201661545U - Device for preventing piston rod from rotating - Google Patents
Device for preventing piston rod from rotating Download PDFInfo
- Publication number
- CN201661545U CN201661545U CN2009202540969U CN200920254096U CN201661545U CN 201661545 U CN201661545 U CN 201661545U CN 2009202540969 U CN2009202540969 U CN 2009202540969U CN 200920254096 U CN200920254096 U CN 200920254096U CN 201661545 U CN201661545 U CN 201661545U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- guiding groove
- front cover
- screw
- end cover
- 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
Links
Images
Abstract
The utility model relates to a device for preventing a piston rod from rotating. A guide groove similar to a key slot is axially arranged on the side face of the piston rod along the piston rod; and the length of the groove is the same or slightly larger than the stroke of the piston rod. A hole penetrating through the side wall of an end cover is arranged at a position from the outer face of the side wall to the axis center on the end cover; the piston rod is installed on the end cover; the hole is at least partially threaded; a guide screw can be screwed into the threaded hole; and the tail end of guide screw is made into a cylindrical shape and can be inserted into the guide groove of the piston rod, thereby the piston rod can just perform linear motion but can not rotate along a central axis of the piston rod. The device is compact in structure, simple in manufacturing, and reliable in work.
Description
Technical field
The utility model relates to a kind of device, particularly cylinder of piston rod rotation and device that prevents the piston rod rotation of oil hydraulic cylinder of preventing.
Background technique
At present, the mechanism that prevents the piston rod rotation that uses in cylinder and hydraulic cylinder device adopts the guide rod device.It is outside and generally all be paired layout that guide rod is arranged on cylinder or oil hydraulic cylinder.
First kind of situation is: be arranged on the guide rod that cylinder and hydraulic cylinder body are outside and connect with cylinder body, prevent in the guide sleeve of the machinery that one end insertion piston rod connects that the machinery that piston rod and piston rod connect from rotating.The relative piston rod of guide rod is fixed.
Second kind of situation is: the mechanical coupling that guide rod is connected with piston rod, an end insertion of guide rod connects in the guide sleeve of all-in-one-piece machinery with cylinder or oil hydraulic cylinder, prevents that the machinery that piston rod connects from rotating.Guide rod is along with the machinery that piston rod connects is done straight line motion together.
The third situation is: piston rod connected, and machinery itself is exactly or have and prevent the mechanism of rotating.
The shortcoming of said apparatus is: the guide rod apparatus structure is huge; The guide rod cantilever is installed and is curved easily, and guiding accuracy is poor; Friction between guide rod and the guide sleeve and lubricated out in the cold easily and cause mechanical failure; If the machinery that requires the piston rod connection also has around the action of piston rod central axis rotation except having along piston rod to straight-line action, so, the guide rod device is just huger, and is also higher to the rigidity requirement of guide rod.
Summary of the invention
In order to overcome the shortcoming of prior art, the utility model provides a kind of device that prevents the piston rod rotation.It is simple in structure, makes simply reliable operation.
The technical scheme in the invention for solving the technical problem is: oil hydraulic cylinder or cylinder comprise cylinder barrel (2), front cover (3), rear end cover (4), pull bar (5), piston rod (6) and piston (7), before, rear end cover (3), (4) pass through bolt (1) sealing and fixing cylinder barrel (2) between, in the endoporus of front cover (3) by seal clearance be installed with piston rod (6), piston rod (6) in the cylinder barrel (2) is gone up by bolt (9) fixed piston (7), hydraulic oil or compressed-air actuated manhole appendix (32) and (41) are arranged respectively on described front cover (3) and the rear end cover (4), it is characterized in that: the plain line direction in the upper edge, cylndrical surface of piston rod (6) has guiding groove (61), fixed guide screw (8) on the inner hole wall of the front cover (3) corresponding with guiding groove (61) position, guider screw (8) is little to be embedded in the guiding groove (61) with gap, and piston rod (6) can only be moved by straight line.
Described guider screw (8) is that 1-3 is right with guiding groove (61).
The utility model is simple in structure, makes simply reliable operation.
Description of drawings
Below in conjunction with an embodiment and with reference to accompanying drawing the utility model is elaborated as follows, wherein
Accompanying drawing is the utility model sectional view.
Embodiment
As shown in drawings, oil hydraulic cylinder or cylinder comprise cylinder barrel (2), front cover (3), rear end cover (4), pull bar (5), piston rod (6), piston (7) and guider screw (8), pass through bolt (1) sealing and fixing cylinder barrel (2) between forward and backward end cap (3), (4), in the endoporus of front cover (3) by seal clearance be installed with piston rod (6), the piston rod (6) in the cylinder barrel (2) is gone up by bolt (9) fixed piston (7).Hydraulic oil or compressed-air actuated manhole appendix (32) and (41) are arranged respectively on described front cover (3) and the rear end cover (4).The plain line direction in the upper edge, cylndrical surface of piston rod (6) has a guiding groove (61), and the length of guiding groove (61) is consistent or big slightly with the stroke of piston rod (6).A guide thread hole (31) is radially arranged on the front cover (3), pass through screw thread fixed guide screw (8) in the guide thread hole (31), in the little guiding groove (61) that is inserted in gap on the piston rod (6) of the front end of guider screw (8), piston rod (6) can only be moved by straight line.
Described guider screw (8) can reverse out with the guide structure of guiding groove (61), and promptly guiding groove (61) is on front cover (3), and guider screw (8) also belongs to protection domain of the present utility model in piston rod (6).
Claims (4)
1. device that prevents piston rod rotation, oil hydraulic cylinder or cylinder comprise cylinder barrel (2), front cover (3), rear end cover (4), pull bar (5), piston rod (6) and piston (7), before, rear end cover (3,4) pass through bolt (1) sealing and fixing cylinder barrel (2) between, in the endoporus of front cover (3) by seal clearance be installed with piston rod (6), piston rod (6) in the cylinder barrel (2) is gone up by bolt (9) fixed piston (7), on described front cover (3) and the rear end cover (4) hydraulic oil or compressed-air actuated manhole appendix (32 are arranged respectively, 41), it is characterized in that: the plain line direction in the upper edge, cylndrical surface of piston rod (6) has guiding groove (61), fixed guide screw (8) on the inner hole wall of the front cover (3) corresponding with guiding groove (61) position, guider screw (8) is little to be embedded in the guiding groove (61) with gap.
2. the device that prevents the piston rod rotation according to claim 1, it is characterized in that: guide thread hole (31) is radially arranged on the described front cover (3), pass through screw thread fixed guide screw (8) in the guide thread hole (31), in the little guiding groove (61) that is inserted in gap on the piston rod (6) of the front end of guider screw (8).
3. the device that prevents the piston rod rotation according to claim 1 and 2 is characterized in that: described guider screw (8) is right for 1-3 with guiding groove (61).
4. the device that prevents the piston rod rotation according to claim 1 and 2, it is characterized in that: the length of described guiding groove (61) is consistent or big slightly with the stroke of piston rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202540969U CN201661545U (en) | 2009-10-17 | 2009-10-17 | Device for preventing piston rod from rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202540969U CN201661545U (en) | 2009-10-17 | 2009-10-17 | Device for preventing piston rod from rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661545U true CN201661545U (en) | 2010-12-01 |
Family
ID=43231961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202540969U Expired - Fee Related CN201661545U (en) | 2009-10-17 | 2009-10-17 | Device for preventing piston rod from rotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661545U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829024A (en) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | Mounting structure for piston rod and rear end cover of hydraulic cylinder |
| CN103557200A (en) * | 2013-11-22 | 2014-02-05 | 徐州徐工液压件有限公司 | Hydraulic cylinder with rotation resistant mechanism |
| CN103591082A (en) * | 2013-11-22 | 2014-02-19 | 中国工程物理研究院总体工程研究所 | Piston rod rotation prevention device of servo hydraulic cylinder |
| CN110056554A (en) * | 2019-05-05 | 2019-07-26 | 江苏创良智能数控科技有限公司 | A kind of knife rest locking cylinder mechanism |
-
2009
- 2009-10-17 CN CN2009202540969U patent/CN201661545U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829024A (en) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | Mounting structure for piston rod and rear end cover of hydraulic cylinder |
| CN103557200A (en) * | 2013-11-22 | 2014-02-05 | 徐州徐工液压件有限公司 | Hydraulic cylinder with rotation resistant mechanism |
| CN103591082A (en) * | 2013-11-22 | 2014-02-19 | 中国工程物理研究院总体工程研究所 | Piston rod rotation prevention device of servo hydraulic cylinder |
| CN103557200B (en) * | 2013-11-22 | 2016-01-06 | 徐州徐工液压件有限公司 | A kind of oil hydraulic cylinder with anti-rotation mechanism |
| CN103591082B (en) * | 2013-11-22 | 2016-02-10 | 中国工程物理研究院总体工程研究所 | A kind of piston rod rotation prevention device of servo hydraulic cylinder |
| CN110056554A (en) * | 2019-05-05 | 2019-07-26 | 江苏创良智能数控科技有限公司 | A kind of knife rest locking cylinder mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201661545U (en) | Device for preventing piston rod from rotating | |
| CN102434530A (en) | Differential-type plunger composite oil cylinder | |
| CN101886644A (en) | Rotary oil cylinder | |
| CN201636115U (en) | Mechanical self-locking hydraulic cylinder | |
| CN208518997U (en) | A kind of external friction mechanical self-locking hydraulic cylinder based on ball-screw | |
| CN104006023B (en) | One utilizes gap sealed plunger case | |
| CN204357440U (en) | Shield machine is backbreak cutter | |
| CN201866011U (en) | Locking device of rectilinear motion oil cylinder | |
| CN107035744B (en) | A kind of angling cylinder having position self-locking function | |
| CN201046487Y (en) | Steel pipe expanding cylinder stroke detecting control device | |
| CN102927083B (en) | Air cylinder piston limiting device | |
| CN201391276Y (en) | Rotary type oil drainage device | |
| CN103759744B (en) | A kind of flexible displacement transmission mechanism | |
| CN202914901U (en) | Seal device for threading cable in coiled tube | |
| CN202451514U (en) | Mechanical locking hydraulic cylinder | |
| CN101504019B (en) | Permanent magnet buffering hydraulic cylinder | |
| CN206009704U (en) | A kind of guide sleeve mechanism of ten thousand tons of press filling devices | |
| CN203743124U (en) | Threaded connection structure for piston | |
| CN203868189U (en) | Anti-oil-leakage brake caliper | |
| CN103640247A (en) | Locking mechanism of connecting rod and ball screw rod of press machine | |
| CN201225500Y (en) | Lubrication structure of decelerator connection shaft | |
| CN203098553U (en) | Invisible hinge with oil filling nozzle | |
| CN216430137U (en) | Mechanical locking lifting cylinder suitable for locking at any position | |
| CN209908894U (en) | Oil cylinder piston rod rotation stopping connecting device | |
| CN104564095B (en) | Shield machine is backbreak knife |
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: 20101201 Termination date: 20181017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |