CN210317984U - Piston rod rotatable linear hydraulic cylinder - Google Patents
Piston rod rotatable linear hydraulic cylinder Download PDFInfo
- Publication number
- CN210317984U CN210317984U CN201921184486.3U CN201921184486U CN210317984U CN 210317984 U CN210317984 U CN 210317984U CN 201921184486 U CN201921184486 U CN 201921184486U CN 210317984 U CN210317984 U CN 210317984U
- Authority
- CN
- China
- Prior art keywords
- end cover
- cylinder body
- mandrel
- dustproof
- excircle
- 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.)
- Active
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model provides a but piston rod rotation straight line pneumatic cylinder when can satisfying linear drive, realizes driven rotation, realizes the use on offshore oil drilling platform drilling rod, guarantees function and the required precision that equipment used. The oil cylinder is provided with a cylinder body, a mandrel is coaxially and rotatably arranged in an inner hole of the cylinder body, a left end cover is fixedly arranged at the left end of the cylinder body, a right end cover is fixedly arranged at the right end of the cylinder body, a left oil cavity is formed among the cylinder body, the mandrel and the left end cover, a right oil cavity is formed among the cylinder body, the mandrel and the right end cover, a left oil hole is formed in the left side of the outer wall of the cylinder body and is communicated with the outside of the cylinder body through the left oil cavity. The utility model discloses applicable to use on the drilling rod.
Description
Technical Field
The utility model relates to a pneumatic cylinder especially relates to a rotatable sharp pneumatic cylinder of piston rod.
Background
It is known that hydraulic cylinders can be used in most engineering fields, and the hydraulic cylinders are driven by hydraulic pressure to drive components needing to be moved linearly to realize linear motion. The piston rod of the traditional linear hydraulic cylinder can only move axially and can not rotate, and the linear hydraulic cylinder applied to the drill rod needs the piston to realize the driven rotation function.
Disclosure of Invention
The invention aims to solve the technical problems that a piston rod of an existing linear hydraulic cylinder can only axially move and cannot rotate, and provides a linear hydraulic cylinder with a rotatable piston rod, which can realize driven rotation while meeting linear driving, can be used on a drill rod of an offshore oil drilling platform, and ensures the use function and precision requirements of equipment.
The invention relates to a piston rod rotatable linear hydraulic cylinder, which is provided with a cylinder body, wherein a mandrel is coaxially and rotatably arranged in an inner hole of the cylinder body, a left end cover is fixedly arranged at the left end of the cylinder body, a right end cover is fixedly arranged at the right end of the cylinder body, a left oil cavity is formed among the cylinder body, the mandrel and the left end cover, a right oil cavity is formed among the cylinder body, the mandrel and the right end cover, a left oil hole is formed in the left side of the outer wall of the cylinder body and communicated with the outside of the cylinder body through the left oil cavity, a right oil hole is formed in the right side of the outer wall of the cylinder body and communicated with the outside of the cylinder body through the right oil cavity, an outer dustproof end cover is arranged on the outer side of the joint of the left end cover and the cylinder body, an outer dustproof end cover is arranged on the left side of the outer dustproof end cover, an end cover inner seal and an end cover inner dust prevention are arranged at the matching position of the inner hole of the right end cover and the excircle of the mandrel, the end cover inner seal is arranged at the dust prevention left side in the end cover, and two mandrel seals are arranged at the left side and the right side of the matching position of the middle big excircle of the mandrel and the barrel.
Preferably, an end cover guide belt is arranged at the position, matched with the excircle of the mandrel, of the inner hole of the left end cover, the end cover guide belt is arranged on the dustproof right side in the end cover, an end cover guide belt is arranged at the position, matched with the excircle of the mandrel, of the inner hole of the right end cover, the end cover guide belt is arranged on the dustproof left side in the end cover, and the mandrel guide belt is arranged between two mandrel seals at the position, matched with the barrel, of the middle large excircle of the mandrel.
Preferably, the right side of the left end cover is coaxially and fixedly provided with a thrust washer, and the left side of the right end cover is coaxially provided with a thrust washer.
The utility model has the advantages of, owing to be equipped with the barrel, coaxial rotation is equipped with the dabber in the hole of barrel, the left end of barrel is fixed to be equipped with the left end lid, the fixed right-hand member end cover that is equipped with of right-hand member of barrel, the dabber, form left oil pocket in the middle of the left end lid, the barrel, the dabber, form right oil pocket in the middle of the right-hand member lid, barrel outer wall left side is equipped with left oilhole outside the barrel that communicates by left oil pocket, barrel outer wall right side is equipped with right oilhole outside the barrel that communicates by right oil pocket, the left end lid is equipped with the end cover outside dustproof with the junction outside of barrel, the end cover outside dustproof left side is equipped with the end cover external seal, be equipped with the end cover internal seal with the excircle cooperation department of dabber on the hole of left end lid, the end cover internal seal is dustproof, the end cover internal seal is located dustproof right, Dustproof left side in the end cover is located to the end cover internal seal, and the big excircle in the middle of the dabber is arranged with two dabber sealings about the cooperation department of barrel, can prevent the entering of inside hydraulic oil leakage and outside dust, is fit for the use under the adverse circumstances, can do the life of extension pneumatic cylinder, and sealed and dustproof all adapts to rotatory and reciprocating motion.
And because the inner hole of the left end cover is provided with an end cover guide belt at the matching part with the excircle of the mandrel, the end cover guide belt is arranged at the dustproof right side in the end cover, the inner hole of the right end cover is provided with an end cover guide belt at the matching part with the excircle of the mandrel, the end cover guide belt is arranged at the dustproof left side in the end cover, the matching part of the middle large excircle of the mandrel and the barrel body is provided with the mandrel guide belt between two mandrel seals, the guiding and supporting effects are achieved, the straightness of the movement of the mandrel is ensured, the friction force generated by the mandrel in the movement is effectively reduced, and.
And because the thrust washer is coaxially and fixedly arranged on the right side of the left end cover and the thrust washer is coaxially arranged on the left side of the right end cover, the impact on the left end cover or the right end cover when the mandrel reaches the limit position can be buffered, the service life is prolonged, and the maintenance cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a side view of FIG. 1;
the symbols in the drawings illustrate that:
1. a barrel; 2. a mandrel; 3. a left end cap; 4. a right end cap; 5. a left oil chamber; 6. a right oil chamber; 101. a left oil hole; 102. a right oil hole; 201. the end cover is dustproof; 202. sealing the end cover externally; 203. sealing the mandrel; 204. sealing the end cover; 205. the end cover is internally dustproof; 301. a mandrel guide band; 302. a thrust washer; 303. an end cap guide strip.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in FIG. 1-2, an embodiment of the present invention is an embodiment of a piston rod rotatable linear hydraulic cylinder, which comprises a cylinder body 1, a mandrel 2 coaxially and rotatably arranged in an inner hole of the cylinder body 1, a left end cap 3 fixedly arranged at the left end of the cylinder body 1, a right end cap 4 fixedly arranged at the right end of the cylinder body 1, a left oil chamber 5 formed among the cylinder body 1, the mandrel 2 and the left end cap 3, a right oil chamber 6 formed among the cylinder body 1, the mandrel 2 and the right end cap 4, a left oil hole 101 formed at the left side of the outer wall of the cylinder body 1 and communicated with the outside of the cylinder body 1 through the left oil chamber 5, a right oil hole 102 formed at the right side of the outer wall of the cylinder body 1 and communicated with the outside of the cylinder body 1 through the right oil chamber 6, an end cap outer dust-proof seal 201 arranged at the outer side of the joint of the left end cap 3 and the cylinder body, an end cover inner seal 204 and an end cover inner dustproof 205 are arranged at the matching position of the inner hole of the left end cover 3 and the outer circle of the mandrel 2, the end cover inner seal 204 is arranged at the right side of the end cover inner dustproof 205, an end cover inner seal 204 and an end cover inner dustproof 205 are arranged at the matching position of the inner hole of the right end cover 4 and the outer circle of the mandrel 2, the end cover inner seal 204 is arranged at the left side of the end cover inner dustproof 205, and two mandrel seals 203 are arranged at the matching position of the middle large outer circle of the mandrel 2 and the; the hydraulic cylinder can prevent the leakage of internal hydraulic oil and the entering of external dust, is suitable for being used in severe environment, can prolong the service life of the hydraulic cylinder, and is sealed and dustproof to adapt to the rotation and reciprocating motion.
In use, as shown in fig. 1, when hydraulic oil enters the left oil chamber 5 through the left oil hole 101, the spool 2 is pushed to move to the right, and when hydraulic oil enters the right oil chamber 6 through the right oil hole 102, the spool 2 is pushed to move to the left.
An end cover guide belt 303 is arranged at the matching position of an inner hole of the left end cover 3 and the excircle of the mandrel 2, the end cover guide belt 303 is arranged at the right side of the dustproof end cover 205 in the end cover, an end cover guide belt 303 is arranged at the matching position of an inner hole of the right end cover 4 and the excircle of the mandrel 2, the end cover guide belt 303 is arranged at the left side of the dustproof end cover 205 in the end cover, a mandrel guide belt 301 is arranged between two mandrel seals 203 at the matching position of the middle large excircle of the mandrel 2 and the barrel body 1, the guide belt plays a role in guiding and supporting, the straightness of movement of the mandrel 2 is ensured, the friction force generated when the mandrel 2 moves can be effectively reduced, and the.
The left side of the left end cover 3 is coaxially and fixedly provided with a thrust washer 302, the left side of the right end cover 4 is coaxially provided with the thrust washer 302, impact on the left end cover 3 or the right end cover 4 when the mandrel 2 reaches a limit position can be buffered, the service life is prolonged, and the maintenance cost is reduced.
The embodiments are part of the scope of the present invention, and therefore, all changes and modifications that are equivalent to the embodiments or equivalent to the claims should be considered as included in the present invention.
Claims (3)
1. The utility model provides a rotatable sharp pneumatic cylinder of piston rod, is equipped with barrel, characterized by: the inner hole of the cylinder body is coaxially and rotatably provided with a mandrel, the left end of the cylinder body is fixedly provided with a left end cover, the right end of the cylinder body is fixedly provided with a right end cover, a left oil cavity is formed among the cylinder body, the mandrel and the left end cover, a right oil cavity is formed among the cylinder body, the mandrel and the right end cover, the left side of the outer wall of the cylinder body is provided with a left oil hole communicated with the outside of the cylinder body through the left oil cavity, the right side of the outer wall of the cylinder body is provided with a right oil hole communicated with the outside of the cylinder body through the right oil cavity, the outer side of the joint of the left end cover and the cylinder body is provided with an outer dustproof end cover, the outer dustproof left side of the end cover is provided with an outer dustproof end cover, the inner sealing of the end cover and the inner dustproof end cover are arranged at the position matched with, the end cover inner seal is arranged on the dustproof right side in the end cover, the inner hole of the right end cover is provided with an end cover inner seal and an end cover inner seal at the matching position of the excircle of the mandrel, the end cover inner seal is arranged on the dustproof left side in the end cover, and the middle large excircle of the mandrel and the matching position of the barrel are arranged left and right to form two mandrel seals.
2. A piston rod rotatable linear hydraulic cylinder as claimed in claim 1, wherein: the utility model discloses a dustproof core shaft, including the core shaft, the core shaft is equipped with the excircle cooperation department of dabber, be equipped with the end cover guidance tape on the hole of left end cover with the excircle cooperation department of dabber is equipped with the end cover guidance tape, the end cover guidance tape is located dustproof right side in the end cover, on the hole of right-hand member lid with the excircle cooperation department of dabber is equipped with the end cover guidance tape, the end cover guidance tape is located dustproof left side in the end cover, the big excircle in the middle of the dabber with the cooperation of barrel is in.
3. A piston rod rotatable linear hydraulic cylinder according to claim 1 or 2, wherein: the right side of the left end cover is coaxially and fixedly provided with a thrust washer, and the left side of the right end cover is coaxially provided with the thrust washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921184486.3U CN210317984U (en) | 2019-07-22 | 2019-07-22 | Piston rod rotatable linear hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921184486.3U CN210317984U (en) | 2019-07-22 | 2019-07-22 | Piston rod rotatable linear hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317984U true CN210317984U (en) | 2020-04-14 |
Family
ID=70125930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921184486.3U Active CN210317984U (en) | 2019-07-22 | 2019-07-22 | Piston rod rotatable linear hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317984U (en) |
-
2019
- 2019-07-22 CN CN201921184486.3U patent/CN210317984U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105443498B (en) | It is a kind of that there is flexible and oscillating function Integral hydraulic cylinder and its application | |
| US7127982B2 (en) | Linear drive with non-rotating piston | |
| CN102720843A (en) | Large-diameter proportional pneumatic valve directly driven by alternating-current servo motor | |
| CN210317984U (en) | Piston rod rotatable linear hydraulic cylinder | |
| CN106969002A (en) | Two-stage double-act-ing hydraulic J-Horner | |
| CN108999830B (en) | Hydraulic cylinder, hydraulic driving system and engineering machinery | |
| CN210034027U (en) | Two-stage oil cylinder | |
| CN204783923U (en) | Pneumatic cylinder | |
| CN101504019B (en) | Permanent magnet buffering hydraulic cylinder | |
| CN104632760B (en) | A kind of hydraulic cylinder | |
| CN212367042U (en) | Waterproof servo electric cylinder | |
| CN211209497U (en) | Servo electric cylinder | |
| CN206754043U (en) | A kind of oil cylinder of adjusting piston pressure | |
| CN113819205A (en) | Take electronic jar of gas buffer | |
| CN209976959U (en) | Double-piston rod type hydraulic cylinder | |
| CN218598511U (en) | Telescopic swing oil cylinder | |
| CN208281262U (en) | A kind of oil cylinder with controllable piston rod withdraws the structure of stroke | |
| CN219413495U (en) | Telescopic output shaft structure of speed reducer | |
| CN205806060U (en) | A kind of development machine guide hydraulic oil cylinder | |
| CN220286107U (en) | Hydro-cylinder with detachable hydro-cylinder buffer structure | |
| JPH0722529Y2 (en) | Cylinder | |
| CN204755462U (en) | Pneumatic cylinder | |
| CN215486956U (en) | Novel air cylinder | |
| CN217545784U (en) | Servo electric cylinder | |
| CN219131655U (en) | Novel counter weight pushes away jar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of linear hydraulic cylinder with rotatable piston rod Effective date of registration: 20210512 Granted publication date: 20200414 Pledgee: Bank of China Limited Weihai Branch Pledgor: Weihai Liansheng Hydraulic Technology Co.,Ltd. Registration number: Y2021980003510 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |