CN2365184Y - Hydraulic jack piston set capable of preventing oil hydraulic cylinder from scraping - Google Patents
Hydraulic jack piston set capable of preventing oil hydraulic cylinder from scraping Download PDFInfo
- Publication number
- CN2365184Y CN2365184Y CN 99204883 CN99204883U CN2365184Y CN 2365184 Y CN2365184 Y CN 2365184Y CN 99204883 CN99204883 CN 99204883 CN 99204883 U CN99204883 U CN 99204883U CN 2365184 Y CN2365184 Y CN 2365184Y
- Authority
- CN
- China
- Prior art keywords
- piston
- lasso
- mind
- ring
- 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 - Lifetime
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Abstract
The utility model relates to a hydraulic jack piston set capable of preventing an oil hydraulic cylinder from scraping, which comprises a piston rod. The upper end of the piston rod is sheathed with a fixed spring and is screwed and combined with a tooth screwed rod. The periphery of the upper end of the piston rod is orderly sheathed with a dust proof oil seal, a fixed ring, an O-shaped ring and a stabilizing ring. An end of the piston rod is sheathed with a back supporting ring and a U-shaped oil seal. The end of the piston rod is sheathed with at least one core sleeve ring, and the core sleeve ring is arranged on the front ends of the back supporting ring and the U-shaped oil seal, and the core sleeve ring is made of wear resistant and compression resistant material. Thus an inner cylinder wall of an oil hydraulic cylinder can not be scratched when the piston rod is acted.
Description
The utility model is relevant for a kind of piston set of hydraulic jack.
The conventional hydraulic jack, as shown in Figure 1, the construction form of its related jack piston group, mainly be piston rod 10 inboard sheathed fixing springs 20 to be planted for one jiao of tooth bolt 30 screw togather, and piston rod 10 upper end outer circumferential sides are arranged with an anti-dust seal 40, a set collar 50, O shape ring 60 and one stabilization ring 70 respectively, and its end then is nested with assemblies such as a back bracket ring 80 and a U type oil sealing 90; Thought is at the assembling structure of above-mentioned piston rod 10 ends, because this back bracket ring 80 is very limited with effective contact range of oil hydraulic cylinder 100 interior casing walls with U type oil sealing 90, so the stable length of this piston rod 10 is extremely short, after using for a long time, because of back bracket ring 80 and the consume to some extent unavoidably of U type oil sealing 90 assemblies, so piston rod 10 will be scraped the interior casing wall that touches oil hydraulic cylinder and cause damage when start, so that can't continue to keep the normal top act work of hydraulic jack, also hazardous accidents be may cause, jack service life and work safety thereof are difficult to guarantee.
The purpose of this utility model is to provide a kind of hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish; the stable length of extensible piston rod; and can guarantee that piston rod can not scraped and decrease casing wall within the oil hydraulic cylinder when start, and then service life of continuity jack and safeguard user's work safety.
The technical solution of the utility model is:
A kind of hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish, comprise a piston rod, the inboard sheathed fixing spring in piston rod upper end also screws togather one jiao of tooth double-screw bolt, piston rod upper end outer circumferential side is arranged with anti-dust seal, set collar, O shape ring and stabilization ring in regular turn, a sheathed back bracket ring of piston-rod end and a U type oil sealing, it is characterized in that: the sheathed at least mind lasso of this piston-rod end, and make this mind lasso be positioned at end before back bracket ring and the U type oil sealing, and this mind lasso is made with wear-resisting compression-resistant material.
The described hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish is characterized in that: this mind lasso is to mix 30% glass fiber material with nylon 66 to make.
The described hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish is characterized in that: this piston-rod end periphery is offered a circular groove, and this mind lasso is nested with and is fixed in this circular groove.
The described hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish is characterized in that: this piston-rod end periphery is offered class's ring portion, and this mind lasso is nested with and is fixed in this class's ring portion.
The described hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish is characterized in that: offer an open slot on this mind lasso.
Effect of the present utility model is:
As mentioned above, the utility model helps piston rod 1 to stablize the extension of length at setting up of mind lasso 2 really, after making piston rod 1 through long-time the use, the unlikely damage of scraping that causes oil hydraulic cylinder 100 interior casing walls, so the leakproofness of oil hydraulic cylinder 100 is splendid, hydraulic oil does not have the oil leakage phenomenon, and its security maintenance for hydraulic jack has more benefit, and service life is also more permanent.
Following conjunction with figs. describes feature of the present utility model and advantage in detail:
Fig. 1 is the compound section figure that commonly uses hydraulic jack.
Fig. 2 is compound section figure of the present utility model.
Fig. 3 is the exploded perspective view of piston set in the utility model.
Fig. 4 is the compound section figure of top act state for the utility model.
As shown in Figures 2 and 3; the hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish of the present utility model; this piston rod 1 inboard sheathed fixing spring 20 also screws togather one jiao of tooth double-screw bolt 30; and the upper end outer circumferential side is arranged with an anti-dust seal 40 in regular turn; one set collar 50; O shape ring 60 and one stabilization ring 70; piston rod 1 a terminal sheathed back bracket ring 80 and a U type oil sealing 90 etc.; above structure and known hydraulic jack are basic identical; only this case more and then at the terminal bar of described jack piston rod 1 directly increases sheathed one or more mind lasso 2; 2 '; and make this mind lasso 2; 2 ' is to be positioned at end before piston rod 1 set back bracket ring 80 and the U type oil sealing 90; and order is lasso 2 in mind; 2 ' is made to have the suitable material of wear-resisting pressure-proof; for example mixing 30%GF (Nilong 66 is mixed 30% glass fibre) with nylon 66 gets final product for selected material; because one or more mind lasso 2 has been set up in this piston rod 1 terminal bar footpath; 2 '; so the stable length of piston rod 1 can obtain longer extension, and can not scrape the interior casing wall that decreases oil hydraulic cylinder 100 can guarantee the piston rod start time.
Above-mentioned mind lasso 2,2 ' and piston rod 1 be nested with combination, it is to make piston rod 1 terminal bar directly offer a circular groove 11 or class's ring portion 12, make be convenient to lasso in mind 2,2 ' be nested with fixing, only also can make the mind lasso 2 that is sheathed on circular groove 11 offer an open slot 21 in case of necessity, in order to being placed on piston rod 1 by mind lasso 2.
Claims (5)
1, a kind of hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish, comprise a piston rod, the inboard sheathed fixing spring in piston rod upper end also screws togather one jiao of tooth double-screw bolt, piston rod upper end outer circumferential side is arranged with anti-dust seal, set collar, O shape ring and stabilization ring in regular turn, a sheathed back bracket ring of piston-rod end and a U type oil sealing, it is characterized in that: the sheathed at least mind lasso of this piston-rod end, and make this mind lasso be positioned at end before back bracket ring and the U type oil sealing, and this mind lasso is made with wear-resisting compression-resistant material.
2, the hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish as claimed in claim 1 is characterized in that: this mind lasso is to mix 30% glass fiber material with nylon 66 to make.
3, the hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish as claimed in claim 1, it is characterized in that: this piston-rod end periphery is offered a circular groove, and this mind lasso is nested with and is fixed in this circular groove.
4, the hydraulic jack piston set that prevents the oil hydraulic cylinder scraped finish as claimed in claim 1, it is characterized in that: this piston-rod end periphery is offered class's ring portion, and this mind lasso is nested with and is fixed in this class's ring portion.
5, as claim 3 or the 4 described hydraulic jack piston set that prevent the oil hydraulic cylinder scraped finish, it is characterized in that: offer an open slot on this mind lasso.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99204883 CN2365184Y (en) | 1999-02-23 | 1999-02-23 | Hydraulic jack piston set capable of preventing oil hydraulic cylinder from scraping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99204883 CN2365184Y (en) | 1999-02-23 | 1999-02-23 | Hydraulic jack piston set capable of preventing oil hydraulic cylinder from scraping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2365184Y true CN2365184Y (en) | 2000-02-23 |
Family
ID=33999569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99204883 Expired - Lifetime CN2365184Y (en) | 1999-02-23 | 1999-02-23 | Hydraulic jack piston set capable of preventing oil hydraulic cylinder from scraping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2365184Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765674A (en) * | 2012-07-04 | 2012-11-07 | 常熟通润汽车零部件股份有限公司 | Piston rod and cylinder body matched structure for hydraulic jack |
| CN103625859A (en) * | 2013-12-12 | 2014-03-12 | 上海东富龙科技股份有限公司 | Vibrating feeder height adjusting mechanism |
-
1999
- 1999-02-23 CN CN 99204883 patent/CN2365184Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765674A (en) * | 2012-07-04 | 2012-11-07 | 常熟通润汽车零部件股份有限公司 | Piston rod and cylinder body matched structure for hydraulic jack |
| CN103625859A (en) * | 2013-12-12 | 2014-03-12 | 上海东富龙科技股份有限公司 | Vibrating feeder height adjusting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |