CN207598905U - The anti-loosening device of piston of oil cylinder - Google Patents
The anti-loosening device of piston of oil cylinder Download PDFInfo
- Publication number
- CN207598905U CN207598905U CN201721677416.2U CN201721677416U CN207598905U CN 207598905 U CN207598905 U CN 207598905U CN 201721677416 U CN201721677416 U CN 201721677416U CN 207598905 U CN207598905 U CN 207598905U
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- CN
- China
- Prior art keywords
- piston
- oil cylinder
- trip bolt
- piston rod
- loosening device
- 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.)
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Abstract
The utility model discloses a kind of anti-loosening device of piston of oil cylinder, including cylinder body, piston and the piston rod on piston that is connected in cylinder body, retainer nut is threaded on the front end of the piston rod, end face and the piston of the retainer nut fit.By the above-mentioned means, the anti-loosening device of piston of the utility model oil cylinder, can simplify structure, easy for installation, sound construction manufactures at low cost.
Description
Technical field
The utility model is related to oil cylinder field, more particularly to a kind of anti-loosening device of piston of oil cylinder.
Background technology
There are two ways to piston thread is locking common at present, one kind is in piston and piston rod counterface drill screw holes
Hexagonal tapered end holding screw in screwing in afterwards, prevents from relatively moving between piston and piston rod by holding screw section；It is another
Kind is the radially displaceable certain angle processing screw hole on piston, and correspondingly vehicle goes out ring-shaped groove, Ran Hou on the piston rod
Piston blot hole is implanted into steel ball, then screws in screw hole with holding screw, by steel ball, holding screw, piston rod annular groove three
Person's cooperation is common to complete piston locking.
The shortcomings that holding screw locking method：It can there are 1- after 1. piston and piston rod thread are worked good, between the two end face
The gap of 2mm, in the presence of gap, drill screw holes are very difficult again by assembler, and the author once saw drill bit
Situation about being scratched by positioning runout position, worker's arm by piston rod；2. boring set screw hole can coordinate in piston and piston rod
A large amount of burrs and overlap are generated between end face, needs worker that the time is spent to modify or even cut it is difficult to modify and totally leave iron again, scratches
Piston rod or inner wall of cylinder；It after 3. holding screw screws in, if follow-up oil cylinder needs are reprocessed when assembling again, needs to bore again tight
Screw hole is determined, without reusing.
Ball lock method shortcoming：1. larger machining blanks are needed for processing steel ball and set screw hole；2. along diameter
It is more difficult to the processing of cheap certain angle, not as good as directly axial in the plane direct easy making process；3. it needs to process on piston rod
Annular groove with the steel ball placed in piston to match, if piston blot hole or piston rod annular groove machining deviation will be made
It is imperfect into coordinating.
Invention content
The utility model can simplify knot mainly solving the technical problems that provide a kind of anti-loosening device of piston of oil cylinder
Structure, easy for installation, sound construction, manufacture are at low cost.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of piston of oil cylinder is provided
Locking device, including cylinder body, piston and the piston rod on piston that is connected in cylinder body, the piston rod
Retainer nut is threaded on front end, end face and the piston of the retainer nut fit.
In one preferred embodiment of the utility model, the retainer nut's is radially equipped with multiple trip bolt holes,
Cooperation is equipped with trip bolt in the trip bolt hole, and the trip bolt screws in trip bolt hole and is fitted in the end of piston
On face.
In one preferred embodiment of the utility model, gasket is additionally provided in the trip bolt hole, the gasket leads to
Fastening screw in compression is crossed on the end face of piston.
In one preferred embodiment of the utility model, the front end of the piston rod has a hierarchic structure, the stop
Nut thread is connected in hierarchic structure.
In one preferred embodiment of the utility model, there is left hand thread in the hierarchic structure of the piston rod, it is described
The junction of piston rod and piston is right-handed thread
The beneficial effects of the utility model are：The anti-loosening device of piston of the utility model oil cylinder can simplify structure, installation
Convenient, sound construction manufactures at low cost.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Other attached drawings are obtained, wherein：
Fig. 1 is the structure diagram of one preferred embodiment of anti-loosening device of piston of the utility model oil cylinder；
Fig. 2 is the schematic diagram in A-A direction of the anti-loosening device of piston of oil cylinder shown in FIG. 1；
The label of each component is as follows in attached drawing：1st, cylinder body, 2, piston, 3, piston rod, 4, retainer nut, 5, trip bolt
Hole, 6, trip bolt, 7, gasket, 8, hierarchic structure.
Specific embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained without making creative work belong to
The range of the utility model protection.
Referring to Fig. 1, a kind of anti-loosening device of piston of oil cylinder, including cylinder body 1, the piston 2, Yi Jipei in cylinder body 1
The piston rod 3 of connection on the piston 2 is closed, retainer nut 4, the end face of retainer nut 4 are threaded on the front end of piston rod 3
It fits with piston 2.
In addition, retainer nut's 4 is radially equipped with multiple trip bolt holes 5, coordinates in trip bolt hole and fastening is installed
Screw 6, trip bolt 6 screw in trip bolt hole 5 and are fitted on the end face of piston 2.
In addition, the interior of trip bolt hole 5 is additionally provided with gasket 7, gasket 7 is pressed on the end face of piston 2 by trip bolt 5
On.
In addition, the front end of piston rod 3 has a hierarchic structure 8, retainer nut 4 is threaded in hierarchic structure.
In addition, having left hand thread in the hierarchic structure of piston rod 3, the junction of piston rod 3 and piston 2 is dextrorotation spiral shell
Line.
Before piston 2 and 3 counterface of piston rod, 3 next step of piston rod processes left hand thread, to stop
Nut 4 coordinates, because 4 responsible piston threads of retainer nut are locking, without the concern for bearing compared with big load, therefore retainer nut 4
Itself have 5-6 tooth, nut thickness is very thin, and processing is simple, does not have particular/special requirement to material.Retainer nut 4 relies on
Left hand thread is fitted with piston rod 3, and is coordinated with 2 end face of piston.
In view of also needing to prevent the loosening of itself of retainer nut 4, because of both retainer nut 4 and piston 2 thread rotary orientation phase
Instead, there is the effect mutually restricted, therefore 2-4 trip bolt hole 5 can be radially processed in 4 end face of retainer nut, screw in tight
Gu screw 6 is withstood on 2 end face of piston, trip bolt 6 scratches 2 end face of piston in order to prevent, can be put into nylon in 6 hole of trip bolt
Nylon spacer 7 is pressed on 1 end face of piston by gasket 7 by the power of trip bolt 6.By nylon spacer 7 frictional force and borrow
The mutual of left-right rotary screw thread is helped to inhibit effectively to have reached the locking purpose between screw thread.
The prior art is different from, the anti-loosening device of piston of the utility model oil cylinder can simplify structure, easy for installation, knot
Structure is secured, and manufacture is at low cost.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
The equivalent structure or equivalent flow shift made using the utility model description is directly or indirectly used in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (5)
1. a kind of anti-loosening device of piston of oil cylinder, including cylinder body, the piston and mating connection in cylinder body are on piston
Piston rod, which is characterized in that be threaded with retainer nut on the front end of the piston rod, the end face of the retainer nut with
Piston fits.
2. the anti-loosening device of piston of oil cylinder according to claim 1, which is characterized in that the retainer nut's radially sets
There are multiple trip bolt holes, coordinate in the trip bolt hole and trip bolt is installed, the trip bolt screws in trip bolt
Hole is simultaneously fitted on the end face of piston.
3. the anti-loosening device of piston of oil cylinder according to claim 2, which is characterized in that the interior of trip bolt hole is also set
There is gasket, the gasket is pressed on by trip bolt on the end face of piston.
4. the anti-loosening device of piston of oil cylinder according to claim 1, which is characterized in that the front end of the piston rod has one
Hierarchic structure, the retainer nut are threaded in hierarchic structure.
5. the anti-loosening device of piston of oil cylinder according to claim 1, which is characterized in that in the hierarchic structure of the piston rod
With left hand thread, the junction of the piston rod and piston is right-handed thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721677416.2U CN207598905U (en) | 2017-12-06 | 2017-12-06 | The anti-loosening device of piston of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721677416.2U CN207598905U (en) | 2017-12-06 | 2017-12-06 | The anti-loosening device of piston of oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598905U true CN207598905U (en) | 2018-07-10 |
Family
ID=62762397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721677416.2U Active CN207598905U (en) | 2017-12-06 | 2017-12-06 | The anti-loosening device of piston of oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307205A (en) * | 2019-07-15 | 2019-10-08 | 徐州永佳液压设备有限公司 | Hydraulic cylinder piston anti-loose structure |
-
2017
- 2017-12-06 CN CN201721677416.2U patent/CN207598905U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307205A (en) * | 2019-07-15 | 2019-10-08 | 徐州永佳液压设备有限公司 | Hydraulic cylinder piston anti-loose structure |
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