CN204591870U - Built-in guide rod oil hydraulic cylinder - Google Patents
Built-in guide rod oil hydraulic cylinder Download PDFInfo
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- CN204591870U CN204591870U CN201520296847.9U CN201520296847U CN204591870U CN 204591870 U CN204591870 U CN 204591870U CN 201520296847 U CN201520296847 U CN 201520296847U CN 204591870 U CN204591870 U CN 204591870U
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- piston rod
- guide rod
- support ring
- plate
- ring flat
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Abstract
Built-in guide rod oil hydraulic cylinder, comprise cylinder barrel, cylinder sleeve and piston rod, piston rod also overlaps outward a Returnning spring, described piston rod is hollow structure, and the rear seal of the inner chamber of described piston rod is set with a guide rod, and the outer wall of described piston rod is installed with an outer support ring flat-plate, the inwall of described piston rod is installed with an inner support ring flat-plate, when described piston rod moves, the inwall rubbing contact of described outer support ring flat-plate and described cylinder barrel, described inner support ring flat-plate contacts with the external wall friction of described guide rod.The utility model is changed little to existing equipment, the inwall of cylinder barrel and outer support ring flat-plate is coordinated to provide dual guide function compared with the guide rod of the many settings of conventional cylinder and inner support ring flat-plate, can better the lateral force of absorption on oil hydraulic cylinder, reduce oil hydraulic cylinder easily causes sealing part abrasion, interior leakage risk when bearing lateral force; In addition, outer support ring flat-plate and inner support ring flat-plate have very strong wear resistance and compensation ability, can guarantee the kinematic accuracy of oil hydraulic cylinder further.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, specifically a kind of built-in guide rod oil hydraulic cylinder.
Background technique
If oil hydraulic cylinder is placed in the course of the work and is improperly easily subject to lateral force, cause support ring Sealing uneven wear, thus affect the kinematic accuracy of oil hydraulic cylinder, cause in oil hydraulic cylinder and leak.Even there is the danger causing oil hydraulic cylinder to eject when lateral force is excessive, cause unnecessary personal property injury.
Model utility content
Technical problem to be solved in the utility model be to provide a kind of can better the lateral force of absorption on oil hydraulic cylinder, ensure the built-in guide rod oil hydraulic cylinder of the kinematic accuracy of oil hydraulic cylinder.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: built-in guide rod oil hydraulic cylinder, comprise cylinder barrel, seal the cylinder sleeve being arranged on the front end of cylinder barrel and the piston rod be sleeved in cylinder barrel, cylinder sleeve is stretched out in the front end of piston rod, piston rod also overlaps outward a Returnning spring, Returnning spring is positioned at cylinder barrel, described piston rod is hollow structure, the rear seal of the inner chamber of described piston rod is set with a guide rod, described piston rod can move along described guide rod, described guide rod is hollow structure, the rear end of described guide rod is provided with the defining flange that radially outward stretches out, the ear end face of described cylinder barrel has limited impression, described defining flange is stuck in described limited impression, the inwall of described limited impression is provided with a hole back-up ring, described hole back-up ring is positioned at the rear side of described guide rod, the outer wall of described piston rod is installed with an outer support ring flat-plate, the inwall of described piston rod is installed with an inner support ring flat-plate, when described piston rod moves, the inwall rubbing contact of described outer support ring flat-plate and described cylinder barrel, described inner support ring flat-plate contacts with the external wall friction of described guide rod.
The beneficial effects of the utility model are: the utility model structure is simple, little to existing equipment change; The utility model coordinates the inwall of cylinder barrel and outer support ring flat-plate to provide dual guide function compared with the guide rod of the many settings of conventional cylinder and inner support ring flat-plate, can better the lateral force of absorption on oil hydraulic cylinder, reduce oil hydraulic cylinder easily causes sealing part abrasion, interior leakage risk when bearing lateral force; In addition, outer support ring flat-plate and inner support ring flat-plate can avoid the direct friction between metalwork to wear and tear, and have very strong wear resistance and compensation ability, can absorb certain vibrations, carrying and stain resistance by force and foreign matter can be allowed to embed, thus guarantee the kinematic accuracy of oil hydraulic cylinder further.
Further, described piston rod has pore.Cause inner chamber of cylinder block to be formed when piston rod can be avoided like this to move to be pressed or vacuum.
Further, the gap length between described piston rod and described guide rod is 0.5mm-1mm.It is not smooth that the too small meeting in gap between piston rod and guide rod causes air-breathing to be vented, and excesssive gap is then unfavorable for sealing, adopts above gap length can balance exhaust and sealing these two aspects factor.
Further, described guide rod is hollow structure, and the internal diameter of described guide rod is 10mm-30mm.Adopt this structure can so that built-in guide rod oil hydraulic cylinder fixing, avoid built-in guide rod oil hydraulic cylinder because of improper use or the excessive and risk that causes oil hydraulic cylinder to eject of suffered lateral force.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment.
Being labeled as of each parts in accompanying drawing: 1 cylinder barrel, 11 limited impressions, 2 cylinder sleeves, 3 piston rods, 31 pores, 4 Returnning springs, 5 guide rods, 51 defining flanges, 6 hole back-up rings, 71 outer support ring flat-plates, 72 inner support ring flat-plates.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
See Fig. 1.
The built-in guide rod oil hydraulic cylinder of the utility model one embodiment, comprise cylinder barrel 1, seal the cylinder sleeve 2 being arranged on the front end of cylinder barrel 1 and the piston rod 3 be sleeved in cylinder barrel 1, cylinder sleeve 2 is stretched out in the front end of piston rod 3, the outer also cover of piston rod 3 has a Returnning spring 4 to reset to facilitate oil hydraulic cylinder, Returnning spring 4 is positioned at cylinder barrel 1, described piston rod 3 is hollow structure, the rear seal of the inner chamber of described piston rod 3 is set with a guide rod 5, described piston rod 3 can move along described guide rod 5, the rear end of described guide rod 5 is provided with the defining flange 51 that radially outward stretches out, the ear end face of described cylinder barrel 1 has limited impression 11, described defining flange 51 is stuck in described limited impression 11, the inwall of described limited impression 11 is provided with a hole back-up ring 6, described hole back-up ring 6 is positioned at the rear side of described guide rod 5, the outer wall of described piston rod 3 is installed with an outer support ring flat-plate 71, the inwall of described piston rod 3 is installed with an inner support ring flat-plate 72, when described piston rod 3 moves, the inwall rubbing contact of described outer support ring flat-plate 71 and described cylinder barrel 1, described inner support ring flat-plate 72 contacts with the external wall friction of described guide rod 5.
Described piston rod 3 has pore 31.Cause inner chamber of cylinder block to be formed when piston rod 3 can be avoided like this to move to be pressed or vacuum.
Gap length between described piston rod 3 and described guide rod 5 is 0.5mm-1mm.It is not smooth that the too small meeting in gap between piston rod 3 and guide rod 5 causes air-breathing to be vented, and excesssive gap is then unfavorable for sealing, adopts above gap length can balance exhaust and sealing these two aspects factor.
Described guide rod 5 is hollow structure, and the internal diameter of described guide rod 5 is 10mm-30mm.Adopt this structure can so that built-in guide rod oil hydraulic cylinder fixing, avoid built-in guide rod oil hydraulic cylinder because of improper use or the excessive and risk that causes oil hydraulic cylinder to eject of suffered lateral force.
In concrete enforcement, cylinder sleeve 2 scyewed joint is in the inwall of cylinder barrel 1, and between cylinder sleeve 2 and cylinder barrel 1, arrange seal ring seal, the inwall of piston rod 3 is provided with multiple inner seal ring mounting groove, in multiple seal ring mounting groove, inner seal ring 81 is all installed, the sealing suit of guide rod 5 is realized with this, the outer wall of piston rod 3 is provided with multiple exterior seal ring mounting groove, in multiple exterior seal ring mounting groove, exterior seal ring 82 is all installed, the sealing between piston rod 3 and cylinder barrel is realized with this, in order to increase the sealing of device further, between guide rod 5 and cylinder barrel 1, arrange seal ring seal, outer support ring flat-plate 71 and inner support ring flat-plate 72 are arranged on to be located in the outer wall of piston rod 3 or the annular groove of inwall, outer support ring flat-plate 71 and inner support ring flat-plate 72 adopt polytetrafluoroethylmaterial material to make.
The working procedure of the built-in guide rod oil hydraulic cylinder of the utility model one embodiment is: when fluid flows in cylinder barrel 1, the elastic force that piston rod 3 overcomes spring 4 under the promotion of fluid does straight line motion, when piston rod 3 moves, the inwall rubbing contact of outer support ring flat-plate 71 and cylinder barrel 1, inner support ring flat-plate 72 contacts with the external wall friction of guide rod 5, such guide rod 5 and inner support ring flat-plate 72 coordinate the inwall of cylinder barrel 1 and outer support ring flat-plate 71 to provide dual guide function, can better the lateral force of absorption on oil hydraulic cylinder, reduce conventional cylinder and easily cause sealing part abrasion when bearing lateral force, the risk of interior leakage, in addition, outer support ring flat-plate 71 and inner support ring flat-plate 72 can avoid the direct friction between metalwork to wear and tear, and have very strong wear resistance and compensation ability, can absorb certain vibrations, carrying and stain resistance by force and foreign matter can be allowed to embed, thus guarantee the kinematic accuracy of oil hydraulic cylinder further, when the work has been finished, get rid of fluid, piston rod 3 is returned to initial position under the elastic force effect of spring 4.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. built-in guide rod oil hydraulic cylinder, comprise cylinder barrel (1), seal the cylinder sleeve (2) being arranged on the front end of cylinder barrel (1) and the piston rod (3) be sleeved in cylinder barrel (1), cylinder sleeve (2) is stretched out in the front end of piston rod (3), piston rod (3) also overlaps outward a Returnning spring (4), Returnning spring (4) is positioned at cylinder barrel (1), it is characterized in that: described piston rod (3) is hollow structure, the rear seal of the inner chamber of described piston rod (3) is set with a guide rod (5), described piston rod (3) can be mobile along described guide rod (5), the rear end of described guide rod (5) is provided with the defining flange (51) that radially outward stretches out, the ear end face of described cylinder barrel (1) has limited impression (11), described defining flange (51) is stuck in described limited impression (11), the inwall of described limited impression (11) is provided with a hole back-up ring (6), described hole back-up ring (6) is positioned at the rear side of described guide rod (5), the outer wall of described piston rod (3) is installed with an outer support ring flat-plate (71), the inwall of described piston rod (3) is installed with an inner support ring flat-plate (72), when described piston rod (3) is mobile, the inwall rubbing contact of described outer support ring flat-plate (71) and described cylinder barrel (1), described inner support ring flat-plate (72) contacts with the external wall friction of described guide rod (5).
2. built-in guide rod oil hydraulic cylinder as claimed in claim 1, is characterized in that: described piston rod (3) has pore (31).
3. built-in guide rod oil hydraulic cylinder as claimed in claim 1 or 2, is characterized in that: the gap length between described piston rod (3) and described guide rod (5) is 0.5mm-1mm.
4. built-in guide rod oil hydraulic cylinder as claimed in claim 1 or 2, is characterized in that: described guide rod (5) is hollow structure, the internal diameter of described guide rod (5) is 10mm-30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520296847.9U CN204591870U (en) | 2015-05-08 | 2015-05-08 | Built-in guide rod oil hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520296847.9U CN204591870U (en) | 2015-05-08 | 2015-05-08 | Built-in guide rod oil hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591870U true CN204591870U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520296847.9U Active CN204591870U (en) | 2015-05-08 | 2015-05-08 | Built-in guide rod oil hydraulic cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN204591870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355446A (en) * | 2017-06-29 | 2017-11-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piston support structure |
-
2015
- 2015-05-08 CN CN201520296847.9U patent/CN204591870U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355446A (en) * | 2017-06-29 | 2017-11-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piston support structure |
| CN107355446B (en) * | 2017-06-29 | 2019-01-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piston support structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |