CN203098464U - Fixing structure of hydraulic cylinder and hydraulic cylinder provided with fixing structure - Google Patents
Fixing structure of hydraulic cylinder and hydraulic cylinder provided with fixing structure Download PDFInfo
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- CN203098464U CN203098464U CN 201320064528 CN201320064528U CN203098464U CN 203098464 U CN203098464 U CN 203098464U CN 201320064528 CN201320064528 CN 201320064528 CN 201320064528 U CN201320064528 U CN 201320064528U CN 203098464 U CN203098464 U CN 203098464U
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- hydraulic cylinder
- fixed structure
- groove
- oil hydraulic
- fixing structure
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Abstract
The utility model provides a fixing structure of a hydraulic cylinder. The fixing structure comprises a first element and a second element. The second element is mounted in the first element in a sleeved mode. The fixing structure further comprises an elastic check ring. The first element and the second element are respectively provided with a cylindrical matching surface. An inner ring groove is formed in the cylindrical matching surface of the first element. An outer ring groove is formed in the position, corresponding to the inner ring groove, of the cylindrical matching surface of the second element. The elastic check ring is arranged between the inner ring groove and the outer ring groove. The utility model further provides the hydraulic cylinder provided with the fixing structure. According to the fixing structure of the hydraulic cylinder and the hydraulic cylinder provided with the fixing structure, the elastic check ring is arranged between the first element and the second element of the hydraulic cylinder, wherein the first element and the second element are matched with each other, a gland or a nut does not need to be used, a threaded connection mode is not used either, and therefore a practicability effect and a reliability effect are achieved. Moreover, production cost is saved, the processing and manufacturing difficulty and the assembly difficulty are lowered, and production efficiency is improved.
Description
Technical field
The utility model relates to hydraulic actuator, more particularly, relates to a kind of oil hydraulic cylinder and fixed structure thereof.
Background technique
At present, the development and Design cylinder diameter often faces a same problem less than the oil hydraulic cylinder of 100mm: because the cylinder diameter of oil hydraulic cylinder is little, the cylinder barrel wall thickness is thinner, so that the Sealing installing space of guide sleeve is not enough.In order to solve the problem of sealing, need add a gland with outside thread or Type of Welding at the cylinder head of oil hydraulic cylinder could the fixed guide cover.Equally, because the space compactness, piston is connected with piston rod, needs to use the locked piston of nut.
As shown in Figure 1, being connected of cylinder barrel 11 ' of the prior art and guide sleeve 21 ' added a gland 31 ' by the end face at guide sleeve 21 ', welds after gland 31 ' and cylinder barrel 11 ' screw-thread fit or the screw-thread fit.By the end face of gland 31 ', realize that guide sleeve 21 ' is fixed in the cylinder barrel 11 ' with the screw-thread fit compressing guide sleeve 21 ' of cylinder barrel 11 '.As shown in Figure 2, piston rod 22 ' of the prior art is connected with piston 12 ' by screw thread, and at the end face of piston rod 22 ' with nut 32 ' latching ram 12 ', thereby make fixedlying connected of piston 12 ' and piston rod 22 '.
The above oil hydraulic cylinder adds the mode of a gland fixed guide cover with outside thread or Type of Welding, owing to increased cylinder cap, so cause manufacture cost to increase, owing on cylinder barrel and the cylinder cap screw thread need be set, also increased difficulty of processing, processing cost and assembling difficulty in addition.In like manner, oil hydraulic cylinder uses the mode of the locked piston of nut, owing to increased nut, and need screw thread be set on piston rod, and cause cost of production increase, difficulty of processing and assembling difficulty to increase.
The model utility content
The oil hydraulic cylinder that the utility model aims to provide a kind of fixed structure of oil hydraulic cylinder and has this structure is with part processing difficulty, assembling difficulty and the high problem of cost that solves the prior art oil hydraulic cylinder.
One side of the present utility model, a kind of fixed structure of oil hydraulic cylinder is provided, described fixed structure comprises first element and second element, described second element housing is contained in first element, described fixed structure also comprises circlip, described first element and described second element have cylindric fitting surface, the cylindric fitting surface place of described first element is provided with inner groove, the cylindric fitting surface of described second element and described inner groove corresponding part are provided with outer groove, and described circlip is arranged between described inner groove and the described outer groove.
Preferably, the degree of depth of described inner groove equals the section radius less than described circlip, and the degree of depth of described outer groove is more than or equal to the diameter of section of described circlip.
Preferably, the Tolerance of Degree of position of described inner groove and described outer groove is 0 ~ 0.3mm.
Preferably, the groove depth tolerance of described inner groove and described outer groove is respectively 0 ~ 0.3mm.
Preferably, described circlip is a Steel Cable Baffle Ring.
Preferably, described first element is a cylinder barrel, and described second element is a guide sleeve.
Preferably, the exterior edge face of described cylinder barrel and described guide sleeve cooperation place is on same plane, and described inner groove and outer groove are apart from past interior 10mm place, the exterior edge face of described cylinder barrel and guide sleeve cooperation place.
Preferably, described first element is a piston, and described second element is a piston rod.
On the other hand of the present utility model, a kind of oil hydraulic cylinder is provided, described oil hydraulic cylinder comprises above-mentioned fixed structure.
Preferably, the cylinder diameter of described oil hydraulic cylinder is equal to or less than 100mm.
The utility model has reduced the use of gland or nut by between first element that cooperatively interacts at oil hydraulic cylinder and second element circlip being set, and the mode that need not be threaded, and reaches the practical and reliable effect; Save cost of production, reduced the difficulty and the assembling difficulty of manufacturing, improved manufacturing efficiency.
Other advantages of the present utility model and beneficial effect will elaborate in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with following embodiment one, but should not constitutes restriction of the present utility model.In the accompanying drawings,
Fig. 1 is the connection diagram of the cylinder barrel and the guide sleeve of oil hydraulic cylinder in the prior art;
Fig. 2 is the connection diagram of the piston and the piston rod of oil hydraulic cylinder in the prior art;
Fig. 3 is the connection diagram of cylinder barrel and guide sleeve in the fixed structure optimal way of the utility model oil hydraulic cylinder;
Fig. 4 is the partial enlarged view among Fig. 3;
Fig. 5 selects the connection diagram of piston and piston rod in the mode for the fixed structure of the excellent oil hydraulic cylinder of the utility model; And
Fig. 6 is the partial enlarged view among Fig. 5.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
A kind of fixed structure of oil hydraulic cylinder, comprise circlip, first element and second element, second element housing is contained in first element, first element and second element have cylindric fitting surface, the cylindric fitting surface place of first element is provided with inner groove, the cylindric fitting surface and the inner groove corresponding part of second element are provided with outer groove, and circlip is arranged between inner groove and the outer groove.
A kind of oil hydraulic cylinder, cylinder barrel and guide sleeve be connected and/or piston adopts the said fixing structure with being connected of piston rod.
Owing to adopted the fixed structure of this circlip, reduced the use of part, reduced cost of production, reduced the difficulty of processing and the assembling difficulty of fixed structure element, improved manufacturing efficiency.
Below will the preferred implementation of the fixed structure of this oil hydraulic cylinder be made a detailed description, it should be noted that this preferred embodiment should not be construed as restriction of the present utility model.
One of fixed structure optimal way of the utility model oil hydraulic cylinder, being connected as Fig. 3 ~ shown in Figure 4 of cylinder barrel and guide sleeve, guide sleeve 21 is set in the cylinder barrel 11, and guide sleeve 21 has fitting surface with cylinder barrel 11, and the exterior edge face is concordant.Toward interior 10mm place, be provided with inner groove 411 at cylinder barrel 11 at the distance end face, be provided with outer groove 421 on the guide sleeve 21 of corresponding inner groove 411, Steel Cable Baffle Ring 31 is arranged in the circular groove of inner groove 411 and outer groove 421 formation.Wherein, the groove depth of inner groove 411 equals the radius in Steel Cable Baffle Ring 31 cross sections, and the groove depth of outer groove 421 is greater than the diameter in Steel Cable Baffle Ring 31 cross sections, and the tolerance of groove depth is controlled at 0 ~ 0.3mm; The aligned in position of inner groove 411 and outer groove 421, its positioning tolerance is controlled at 0 ~ 0.3mm.
Before guide sleeve 21 is installed, earlier Steel Cable Baffle Ring 31 is placed in the outer groove 421, because the groove depth of outer groove 421 is greater than the diameter in Steel Cable Baffle Ring 31 cross sections, so Steel Cable Baffle Ring 31 can be compressed in the outer groove 421 during assembling, when guide sleeve 21 covers were set to the design attitude of cylinder barrel 11, because the position of corresponding outer groove 421, cylinder barrel 11 was provided with inner groove 411, Steel Cable Baffle Ring 31 recovers distortion, thereby guide sleeve 21 is fixed in the cylinder barrel 11.
Another optimal way of the fixed structure of the utility model oil hydraulic cylinder, being connected of piston and piston rod as Fig. 5 ~ shown in Figure 6, one end of piston rod 22 is set in the piston 12, piston 12 has fitting surface with piston rod 22, the same position of fitting surface, be provided with inner groove 412 on piston 12, be provided with outer groove 422 on piston rod 22, Steel Cable Baffle Ring 32 is arranged in the circular groove of inner groove 412 and outer groove 422 formation.Wherein, the groove depth of inner groove 412 equals the radius in Steel Cable Baffle Ring 32 cross sections, and the groove depth of outer groove 422 is greater than the diameter in Steel Cable Baffle Ring 32 cross sections, and the tolerance of groove depth is controlled at 0 ~ 0.3mm; The aligned in position of inner groove 412 and outer groove 422, its positioning tolerance is controlled at 0 ~ 0.3mm.
In like manner, when piston 12 is installed, earlier Steel Cable Baffle Ring 32 is placed in the outer groove 422, because the groove depth of outer groove 422 is greater than the diameter in Steel Cable Baffle Ring 32 cross sections, thus Steel Cable Baffle Ring 32 can be compressed in the outer groove 422 during assembling, when piston 12 covers are set to the design attitude of piston rod 22, because the position of corresponding outer groove 422, piston 12 is provided with inner groove 412, and Steel Cable Baffle Ring 32 recovers distortion, thereby piston 12 is fixed on the piston rod 22.
More than two mode of executions be the preferred mode of the utility model, those skilled in the art can be according to design of the present utility model, technological scheme is carried out multiple simple modification, for example, Steel Cable Baffle Ring is changed into other circlip, the position and/or the groove depth of inner groove or outer groove are made machining accuracy that changes, changes inner groove and/or outer groove etc. slightly, all should be within protection domain of the present utility model; As long as without prejudice to the thought of the invention, various different embodiments of the present utility model are carried out combination in any, all should be considered as the disclosed content of the utility model.
Claims (10)
1. the fixed structure of an oil hydraulic cylinder, described fixed structure comprises first element and second element, described second element housing is contained in first element, it is characterized in that, described fixed structure also comprises circlip, described first element and described second element have cylindric fitting surface, the cylindric fitting surface place of described first element is provided with inner groove, the cylindric fitting surface of described second element and described inner groove corresponding part are provided with outer groove, and described circlip is arranged between described inner groove and the described outer groove.
2. fixed structure according to claim 1 is characterized in that the degree of depth of described inner groove equals the section radius less than described circlip, and the degree of depth of described outer groove is more than or equal to the diameter of section of described circlip.
3. fixed structure according to claim 2 is characterized in that, the Tolerance of Degree of position of described inner groove and described outer groove is 0 ~ 0.3mm.
4. fixed structure according to claim 2 is characterized in that, the groove depth tolerance of described inner groove and described outer groove is respectively 0 ~ 0.3mm.
5. fixed structure according to claim 2 is characterized in that, described circlip is a Steel Cable Baffle Ring.
6. according to any described fixed structure of claim 3 ~ 5, it is characterized in that described first element is a cylinder barrel, described second element is a guide sleeve.
7. fixed structure according to claim 6 is characterized in that, the exterior edge face of described cylinder barrel and described guide sleeve cooperation place is on same plane, and described inner groove and outer groove are apart from past interior 10mm place, the exterior edge face of described cylinder barrel and guide sleeve cooperation place.
8. according to any described fixed structure of claim 3 ~ 5, it is characterized in that described first element is a piston, described second element is a piston rod.
9. an oil hydraulic cylinder is characterized in that, described oil hydraulic cylinder comprises any described fixed structure of claim 1 ~ 8.
10. oil hydraulic cylinder according to claim 9 is characterized in that the cylinder diameter of described oil hydraulic cylinder is equal to or less than 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320064528 CN203098464U (en) | 2013-02-05 | 2013-02-05 | Fixing structure of hydraulic cylinder and hydraulic cylinder provided with fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320064528 CN203098464U (en) | 2013-02-05 | 2013-02-05 | Fixing structure of hydraulic cylinder and hydraulic cylinder provided with fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098464U true CN203098464U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320064528 Expired - Fee Related CN203098464U (en) | 2013-02-05 | 2013-02-05 | Fixing structure of hydraulic cylinder and hydraulic cylinder provided with fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438576A (en) * | 2016-11-14 | 2017-02-22 | 中北大学 | Locking mechanism for locking at any position and locking precision determination method thereof |
| CN108006002A (en) * | 2018-01-03 | 2018-05-08 | 江苏恒立液压股份有限公司 | Small capacity double goes out rod oil cylinder |
-
2013
- 2013-02-05 CN CN 201320064528 patent/CN203098464U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438576A (en) * | 2016-11-14 | 2017-02-22 | 中北大学 | Locking mechanism for locking at any position and locking precision determination method thereof |
| CN106438576B (en) * | 2016-11-14 | 2018-05-29 | 中北大学 | A kind of retaining mechanism for any position locking |
| CN108006002A (en) * | 2018-01-03 | 2018-05-08 | 江苏恒立液压股份有限公司 | Small capacity double goes out rod oil cylinder |
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| 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: 20130731 Termination date: 20150205 |
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| EXPY | Termination of patent right or utility model |