CN202628675U - Limit structure of hydrocylinder with large cylinder diameter - Google Patents
Limit structure of hydrocylinder with large cylinder diameter Download PDFInfo
- Publication number
- CN202628675U CN202628675U CN 201220226939 CN201220226939U CN202628675U CN 202628675 U CN202628675 U CN 202628675U CN 201220226939 CN201220226939 CN 201220226939 CN 201220226939 U CN201220226939 U CN 201220226939U CN 202628675 U CN202628675 U CN 202628675U
- Authority
- CN
- China
- Prior art keywords
- guide sleeve
- limit structure
- cylinder body
- hydrocylinder
- piston rod
- 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 - Fee Related
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Abstract
The utility model provides a limit structure of a hydrocylinder with a large cylinder diameter. The limit structure of the hydrocylinder comprises a cylinder body, wherein a piston rod is arranged in the cylinder body; a piston is arranged on the left end of the piston rod, a guide sleeve is arranged on the right end of the piston rod, and a dustproof ring is arranged inside the right end of the guide sleeve. The limit structure of the hydrocylinder is characterized in that the cylinder body is in sealing connection with the guide sleeve through internal screw threads formed on the inner wall of the cylinder body and external screw threads formed on the outer wall of the guide sleeve; and the right side of the guide sleeve is connected with a locking baffle. The limit structure of the hydrocylinder with the large cylinder diameter provided by the utility model overcomes the shortages of the prior art; the locking baffle is used for replacing a check ring, and limiting the dustproof ring; the structure is simple, and special installing and uninstalling tools are not needed; the dustproof ring can be installed and uninstalled conveniently; and production costs are saved.
Description
Technical field
The utility model relates to a kind of big cylinder diameter hydraulic jack limit structure, belongs to shield machine cylinder structure technical field.
Background technique
At present; How the dust ring that is used for the big cylinder diameter hydraulic jack of shield machine carries out spacing through back-up ring; Like Fig. 1, open a circlip groove on guide sleeve 4 inner dust ring 6 grooves next doors, back-up ring 7 is installed in the circlip groove; Dust ring 6 is carried out position-limiting action, prevent that dust ring 6 is extruded groove under pressure.Back-up ring 7 structures are as shown in Figure 2, and its installation and removal process all needs special tool, especially dismantle oil cylinder after, must the afterbody wedge angle 7-1 place of back-up ring 7 be levered up with special tool and could take out back-up ring 7, could take out dust ring 6 then and change.The hydraulic jack that surpasses 250mm for diameter of piston rod; The special tool of getting back-up ring 7 costs an arm and a leg, though and back-up ring 7 afterbody wedge angles passed through polishing, but have certain danger; When using special tool to take out; If undue force, the hand of stabbing the operator easily is not easy to assembling and maintenance.
Summary of the invention
The purpose of the utility model provide a kind of simple in structure, be easy for installation and removal and big cylinder diameter hydraulic jack limit structure that manufacturing cost is low.
In order to achieve the above object; The technological scheme of the utility model provides a kind of big cylinder diameter hydraulic jack limit structure, comprises cylinder body, and piston rod is located at cylinder interior; The piston rod left end is provided with piston; The piston rod right-hand member is provided with guide sleeve, and guide sleeve right-hand member inside is provided with dust ring, it is characterized in that: said cylinder body and guide sleeve are tightly connected through the internal thread of being located at inboard wall of cylinder block and the outside thread of being located at the guide sleeve outer wall; Said guide sleeve right side connects the locking baffle plate.
Preferably, said locking baffle plate is a loop configuration.
A kind of big cylinder diameter hydraulic jack limit structure that the utility model provides has overcome the deficiency of existing technology; Use the locking baffle plate to replace back-up ring; Dust ring is carried out position-limiting action, simple in structure, do not need special-purpose installation and removal instrument; Not only be convenient to the installation and removal of dust ring, and practiced thrift the cost of manufacturing.
Description of drawings
Fig. 1 is traditional dust ring limit structure schematic representation;
Fig. 2 is the back-up ring structural representation;
A kind of big cylinder diameter hydraulic jack limit structure schematic representation that Fig. 3 provides for the utility model;
Fig. 4 is a guide collar structural representation in the present embodiment;
Fig. 5 is a guide collar sectional view in the present embodiment;
Fig. 6 is a locking baffle plate schematic representation in the present embodiment.
Embodiment
For making the utility model more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
A kind of big cylinder diameter hydraulic jack limit structure schematic representation that Fig. 3 provides for the utility model, described a kind of big cylinder diameter hydraulic jack limit structure is made up of piston rod 1, piston 2, cylinder body 3, guide sleeve 4, locking baffle plate 5 and dust ring 6.
In conjunction with Fig. 4-Fig. 6, process the outside thread 4-1 that is uniformly distributed with at the outer wall of guide sleeve 4, be close to right flank processing dust ring 6 grooves at guide sleeve 4 inwalls, at the even thread mill drilling 4-2 of guide sleeve 4 right flanks; Dust ring 6 places in the groove; Piston 2 and guide sleeve 4 are installed in the right ends of piston rod 1 respectively; Internal thread in processing of cylinder body 3 inwall right-hand members and outside thread 4-1 coupling gets into cylinder body 3, turn guide sleeve 4 with the lifting of piston rod 1 assembly then; Let the outside thread of guide sleeve 4 and the internal thread of cylinder body 3 screw, guide sleeve 4 and cylinder body 3 are adjacent to; The also even thread mill drilling 5-1 in relevant position on the annular locking baffle plate 5 of size and guide sleeve 4 couplings is through the right flank locking of bolt with baffle plate 5 and guide sleeve 4, to 6 position-limiting actions of dust ring.
When dust ring 6 damages or wearing and tearing when needing to change, can unclamp the bolt of locking baffle plate 5, remove locking baffle plate 5, dismantle oil cylinder then, take out dust ring 6 replacings and get final product.
Claims (2)
1. one kind big cylinder diameter hydraulic jack limit structure; Comprise cylinder body (3); Piston rod (1) is located at cylinder body (3) inside, and piston rod (1) left end is provided with piston (2), and piston rod (1) right-hand member is provided with guide sleeve (4); Guide sleeve (4) right-hand member inside is provided with dust ring (6), it is characterized in that: said cylinder body (3) and guide sleeve (4) are tightly connected through the internal thread of being located at cylinder body (3) inwall and the outside thread (4-1) of being located at guide sleeve (4) outer wall; Said guide sleeve (4) right side connects locking baffle plate (5).
2. a kind of big cylinder diameter hydraulic jack limit structure as claimed in claim 1 is characterized in that: said locking baffle plate (5) is a loop configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226939 CN202628675U (en) | 2012-05-17 | 2012-05-17 | Limit structure of hydrocylinder with large cylinder diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226939 CN202628675U (en) | 2012-05-17 | 2012-05-17 | Limit structure of hydrocylinder with large cylinder diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202628675U true CN202628675U (en) | 2012-12-26 |
Family
ID=47381880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220226939 Expired - Fee Related CN202628675U (en) | 2012-05-17 | 2012-05-17 | Limit structure of hydrocylinder with large cylinder diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202628675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822620A (en) * | 2015-01-07 | 2016-08-03 | 富阳通力机械制造有限公司 | Stroke limiting oil cylinder with groove for jack |
| CN106133336A (en) * | 2014-04-07 | 2016-11-16 | 卡特彼勒环球矿业欧洲有限公司 | Sleeve holder for hydraulic cylinder |
-
2012
- 2012-05-17 CN CN 201220226939 patent/CN202628675U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133336A (en) * | 2014-04-07 | 2016-11-16 | 卡特彼勒环球矿业欧洲有限公司 | Sleeve holder for hydraulic cylinder |
| CN106133336B (en) * | 2014-04-07 | 2018-09-28 | 卡特彼勒环球矿业欧洲有限公司 | Sleeve holder for hydraulic cylinder |
| CN105822620A (en) * | 2015-01-07 | 2016-08-03 | 富阳通力机械制造有限公司 | Stroke limiting oil cylinder with groove for jack |
| CN105822620B (en) * | 2015-01-07 | 2018-09-04 | 富阳通力机械制造有限公司 | A kind of stroke limit oil cylinder of very heavy very useful with groove |
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Legal Events
| 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: 20121226 Termination date: 20160517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |