CN102161459A - Jack for fixing piston head by using three-semi-ring structure and hydraulic bracket - Google Patents
Jack for fixing piston head by using three-semi-ring structure and hydraulic bracket Download PDFInfo
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- CN102161459A CN102161459A CN2011100503702A CN201110050370A CN102161459A CN 102161459 A CN102161459 A CN 102161459A CN 2011100503702 A CN2011100503702 A CN 2011100503702A CN 201110050370 A CN201110050370 A CN 201110050370A CN 102161459 A CN102161459 A CN 102161459A
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- jack
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- piston head
- piston rod
- ring
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Abstract
The invention discloses a jack for fixing a piston head by using a three-semi-ring structure and a hydraulic bracket. The jack comprises a cylinder body and a piston rod, wherein the rear end of the piston rod is connected with the piston head; a shaft shoulder and a clamping groove are formed at the rear end of the piston rod; the piston head is sleeved at the rear end of the piston rod and leans against the shaft shoulder; a clamping ring is clamped in the clamping groove to block the piston head; the clamping ring has the three-semi-ring structure; a retaining sleeve is sleeved on the outer side of the clamping ring with the three-semi-ring structure; a check ring for the shaft is clamped at the shaft end of the piston rod to block the retaining sleeve; a concave hole is formed at the outer end of the piston head; and the clamping ring and the retaining sleeve are sleeved in the concave hole. The jack is convenient to mount, has a simple structure and can guarantee sufficient length guidance of the piston head.
Description
Technical field
The present invention relates to a kind of jack, relate in particular to a kind of jack and hydraulic support of employing three semi-loop fixed piston heads.
Background technology
Shown in Fig. 1 a, 1b, 1c, jack of the prior art comprises cylinder body 1, piston rod 2, and the rear end of described piston rod 2 is connected with piston head 3.In the prior art, the connection mode of jack piston head mainly contains three kinds: the semi-ring formula connects, be threaded with block key is connected.
As shown in Figure 1a, semi-ring formula connection mode, because semi-ring 4 arranges successively that with piston head 3 axial dimension that needs is longer, under the certain situation of axial dimension, the axial dimension of piston head 3 shortens, and has reduced guiding length;
Shown in Fig. 1 b, relatively difficulty of dismounting is threaded;
Shown in Fig. 1 c, though connecting short also being easy to of axial dimension, dismantles on the card key, thicker because of blocking key 5, difficult when milling opening, not only the cost height also influences manufacturing schedule, in addition, because on two parts, its steering capability is slightly poor respectively for the guide ring of piston packing both sides.
Summary of the invention
The purpose of this invention is to provide a kind of installation, compact conformation be convenient to, can guarantee that again piston head has the jack and the hydraulic support of the employing three semi-loop fixed piston heads of enough length guiding.
The objective of the invention is to be achieved through the following technical solutions:
The jack of employing three semi-loop fixed piston heads of the present invention, comprise cylinder body, piston rod, the rear end of described piston rod is connected with piston head, the rear end of described piston rod is provided with the shaft shoulder, draw-in groove, described piston head is enclosed within the rear end of described piston rod and leans against on the shaft shoulder, and card has snap ring that described piston head is blocked in the described draw-in groove, and described snap ring is three semi-loops, the outside of the snap ring of three semi-loops is with maintainance set, and card has shaft block ring that described maintainance set is blocked on the axle head of described piston rod;
The outer end of described piston head is provided with shrinkage pool, and described snap ring and maintainance set are located in the described shrinkage pool.
Hydraulic support of the present invention, following one or more elements of this hydraulic support adopt the jack of above-mentioned employing three semi-loop fixed piston heads:
Column, wall supporting jack, thruster jack, pass jack, lift end jack.
As seen from the above technical solution provided by the invention, the jack and the hydraulic support of the employing three semi-loop fixed piston heads that the embodiment of the invention provides, because the outer end of piston head is provided with shrinkage pool, snap ring is three semi-loops, snap ring and maintainance set can be located in the described shrinkage pool.Be convenient to installation, compact conformation, can guarantee that again piston head has enough length guiding.Be applied to hydraulic support column, wall supporting jack, thruster jack, pass jack or lift in the end jack, can satisfy the dimensional characteristic of equipment, can satisfy the requirement on the performance again.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 a is the structural representation of semi-ring formula bonded assembly piston head in the prior art;
Fig. 1 b is the structural representation of the piston head that is threaded in the prior art;
Fig. 1 c is the structural representation of card key bonded assembly piston head in the prior art;
The local structure scheme drawing of the jack of the employing three semi-loop fixed piston heads that Fig. 2 provides for the embodiment of the invention;
Fig. 3 is the end face structure scheme drawing that adopts three semi-loop fixed piston heads in the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
The jack of employing three semi-loop fixed piston heads of the present invention, concrete real-time mode such as Fig. 2 that it is preferable, shown in Figure 3, comprise cylinder body 1, piston rod 2, the rear end of described piston rod 2 is connected with piston head 3, the rear end of described piston rod 2 is provided with the shaft shoulder, draw-in groove, described piston head 3 is enclosed within the rear end of described piston rod 2 and leans against on the shaft shoulder, card has snap ring 8 that described piston head 3 is blocked in the described draw-in groove, described snap ring 8 is three semi-loops, the outside of the snap ring 8 of three semi-loops is with maintainance set 11, and card has shaft block ring 10 that described maintainance set 11 is blocked on the axle head of described piston rod 2;
The outer end of described piston head 3 is provided with shrinkage pool 6, and described snap ring 8 and maintainance set 11 are located in the described shrinkage pool 6.
The outer wall of described piston head 3 is provided with sealing member 7, and the both sides of described sealing member 7 are respectively equipped with guide ring 9.
Hydraulic support of the present invention, its preferable concrete real-time mode are that following one or more elements of this hydraulic support adopt the jack of above-mentioned employing three semi-loop fixed piston heads:
Column, wall supporting jack, thruster jack, pass jack, lift end jack.
Piston head among the present invention is an integral structure, for ease of installing, snap ring is designed to three semi-rings, be fixed by maintainance set and shaft block ring again, maintainance set and three semi-rings embed in the piston head, can save the space, so not only compact conformation but also can guarantee that piston head has enough length to lead.Because piston head is whole, but the guide ring actv. of sealing member both sides plays support and directional tagging.
The present invention especially when the axial dimension of jack requires than compactness, can adopt this structure applicable to the jack of each specification.
The shrinkage pool size that piston head is installed three semi-rings can should satisfy requirement of strength according to calculating, and interference can not occur again during installation.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. jack that adopts three semi-loop fixed piston heads, comprise cylinder body, piston rod, the rear end of described piston rod is connected with piston head, it is characterized in that, the rear end of described piston rod is provided with the shaft shoulder, draw-in groove, described piston head is enclosed within the rear end of described piston rod and leans against on the shaft shoulder, card has snap ring that described piston head is blocked in the described draw-in groove, described snap ring is three semi-loops, the outside of the snap ring of three semi-loops is with maintainance set, and card has shaft block ring that described maintainance set is blocked on the axle head of described piston rod;
The outer end of described piston head is provided with shrinkage pool, and described snap ring and maintainance set are located in the described shrinkage pool.
2. the jack of employing three semi-loop fixed piston heads according to claim 1 is characterized in that the outer wall of described piston head is provided with sealing member, and the both sides of described sealing member are respectively equipped with guide ring.
3. a hydraulic support is characterized in that, following one or more elements of this hydraulic support adopt the jack of claim 1 or 2 described employing three semi-loop fixed piston heads:
Column, wall supporting jack, thruster jack, pass jack, lift end jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100503702A CN102161459A (en) | 2011-03-02 | 2011-03-02 | Jack for fixing piston head by using three-semi-ring structure and hydraulic bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100503702A CN102161459A (en) | 2011-03-02 | 2011-03-02 | Jack for fixing piston head by using three-semi-ring structure and hydraulic bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102161459A true CN102161459A (en) | 2011-08-24 |
Family
ID=44462968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100503702A Pending CN102161459A (en) | 2011-03-02 | 2011-03-02 | Jack for fixing piston head by using three-semi-ring structure and hydraulic bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102161459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514222A (en) * | 2011-12-09 | 2012-06-27 | 张培洲 | Multifunctional ultrahigh-pressure ten-thousand-ton grade press machine |
| CN109595984A (en) * | 2018-12-27 | 2019-04-09 | 中国人民解放军陆军工程大学 | Sighting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1134300A (en) * | 1966-05-03 | 1968-11-20 | Tubmetal La Cellofibre | Jack |
| CN87216344U (en) * | 1987-12-08 | 1988-07-13 | 广东省机械研究所 | Cylinder with piston with low starting pressure |
| CN2584955Y (en) * | 2002-11-28 | 2003-11-05 | 天地科技股份有限公司 | Sealing structure for piston and piston rod of pile and jack |
| CN201999681U (en) * | 2011-03-02 | 2011-10-05 | 中煤北京煤矿机械有限责任公司 | Jack adopting three semi-ring structure for fixing piston head and hydraulic support |
-
2011
- 2011-03-02 CN CN2011100503702A patent/CN102161459A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1134300A (en) * | 1966-05-03 | 1968-11-20 | Tubmetal La Cellofibre | Jack |
| CN87216344U (en) * | 1987-12-08 | 1988-07-13 | 广东省机械研究所 | Cylinder with piston with low starting pressure |
| CN2584955Y (en) * | 2002-11-28 | 2003-11-05 | 天地科技股份有限公司 | Sealing structure for piston and piston rod of pile and jack |
| CN201999681U (en) * | 2011-03-02 | 2011-10-05 | 中煤北京煤矿机械有限责任公司 | Jack adopting three semi-ring structure for fixing piston head and hydraulic support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514222A (en) * | 2011-12-09 | 2012-06-27 | 张培洲 | Multifunctional ultrahigh-pressure ten-thousand-ton grade press machine |
| CN109595984A (en) * | 2018-12-27 | 2019-04-09 | 中国人民解放军陆军工程大学 | Sighting device |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110824 |