CN110805587A - Sealed piston rod end cover - Google Patents
Sealed piston rod end cover Download PDFInfo
- Publication number
- CN110805587A CN110805587A CN201810881283.3A CN201810881283A CN110805587A CN 110805587 A CN110805587 A CN 110805587A CN 201810881283 A CN201810881283 A CN 201810881283A CN 110805587 A CN110805587 A CN 110805587A
- Authority
- CN
- China
- Prior art keywords
- annular
- end cover
- piston rod
- cylinder
- groove
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
- F15B15/1442—End cap sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to the technical field of piston rods and discloses a sealed piston rod end cover which comprises a cylinder barrel, wherein an annular clamping groove is formed in the middle of one side of the cylinder barrel, the end cover is movably sleeved on one side, close to the annular clamping groove, of the cylinder barrel, an annular groove is formed in the middle of the end cover, rectangular grooves are respectively formed in the middle of the top end and the middle of the bottom end of an inner cavity of the annular groove, a limiting block is movably sleeved inside the rectangular grooves, one end of the limiting block penetrates through and extends into the annular groove and is fixedly connected with an annular sliding block, and a first sealing ring is fixedly connected to one side. This canned type piston rod end cover uses through the cooperation of sloping block, second sealing washer, first sealing washer and annular slider, makes between end cover and the cylinder still all not have the gap between the hydro-cylinder pole in end cover and the cylinder, has guaranteed that the hydraulic oil in the cylinder can not spill over the outside of cylinder to the leakproofness of canned type piston rod end cover has been promoted.
Description
Technical Field
The invention relates to the technical field of piston rods, in particular to a sealed piston rod end cover.
Background
The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to the oil cylinder and the air cylinder movement executing component, the piston rod is a moving component with frequent movement and high technical requirements, the components of the piston rod are a cylinder barrel, an oil cylinder rod, a piston and an end cover, and the service life and the reliability of the whole product are directly influenced by the quality of the machining quality of the piston rod.
The piston rod is an energy conversion assembly capable of converting hydraulic pressure into mechanical energy, so that the sealing performance inside the piston rod directly influences the energy conversion efficiency of the piston rod, but the end cover of the piston rod and the cylinder barrel are usually fixed by screws, and a sealing structure is not used for sealing a joint, so that a gap exists between the end cover and the cylinder barrel, once hydraulic oil inside the cylinder barrel overflows the cylinder barrel, the hydraulic oil can overflow from the end cover and the cylinder barrel, so that the energy conversion efficiency of the piston rod is reduced, and the screw is easy to loosen due to the vibration of the piston rod due to the long-time use of the piston rod, and the stability is poor.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a sealed piston rod end cover which has the advantages of good sealing performance, high stability and the like, and solves the problems that the end cover of a piston rod and a cylinder barrel are usually fixed by screws, a sealing structure is not used for sealing a joint, so that a gap exists between the end cover and the cylinder barrel, once hydraulic oil in the cylinder barrel overflows the cylinder barrel, the hydraulic oil overflows from the end cover and the cylinder barrel, the energy conversion efficiency of the piston rod is reduced, and the screws are easy to loosen due to the vibration of the piston rod and have poor stability due to the long-time use of the piston rod.
(II) technical scheme
In order to achieve the purposes of good sealing performance and high stability, the invention provides the following technical scheme: a sealed piston rod end cover comprises a cylinder barrel, wherein an annular clamping groove is formed in the middle of one side of the cylinder barrel, an end cover is movably sleeved on one side of the cylinder barrel, which is close to the annular clamping groove, an annular groove is formed in the middle of the end cover, rectangular grooves are respectively formed in the middle of the top end and the middle of the bottom end of an inner cavity of the annular groove, a limiting block is movably sleeved in the rectangular grooves, one end of the limiting block penetrates through and extends into the annular groove, an annular sliding block is fixedly connected to one side of the annular sliding block, an inclined block is slidably connected to the other side of the annular sliding block, a second sealing ring is fixedly connected to the other end of the inclined block, round holes are respectively formed in the top end and the bottom end of the end cover, through holes are formed in the middle of the top end of an inner cavity, one ends of the two screws penetrate through and extend to the outside of the round hole, the clamping strip is sleeved on the inner portion of the through hole in a movable mode, the annular spring located outside the end cover is sleeved on the outer portion of the clamping strip in a movable mode, and the limiting hole located inside the round hole is formed in one end of each screw.
Preferably, the limiting block is rectangular, and the outer portion of the limiting block is connected with the inner portion of the rectangular groove in a sliding mode.
Preferably, the first sealing ring is made of natural rubber, one end of the first sealing ring penetrates through and extends into the annular clamping groove, and the outer portion of the first sealing ring is connected with the inner portion of the annular clamping groove in a sliding mode.
Preferably, the number of the inclined blocks is twenty to thirty, the inclined blocks are annularly distributed on the outer portion of the second sealing ring, and the outer portions of the inclined blocks are in sliding connection with the inner portion of the annular groove.
Preferably, one end, far away from the annular spring, of the clamping strip penetrates through the round hole and extends to the inside of the limiting hole, and the outside of the clamping strip is connected with the inside of the limiting hole in a sliding mode.
Preferably, one end of the annular spring is fixedly connected with one end of the clamping strip, and the other end of the annular spring is fixedly connected with one end of the outer portion of the end cover.
(III) advantageous effects
Compared with the prior art, the invention provides a sealed piston rod end cover, which has the following beneficial effects:
1. this canned type piston rod end cover uses through the cooperation of sloping block, second sealing washer, first sealing washer and annular slider, makes between end cover and the cylinder still all not have the gap between the hydro-cylinder pole in end cover and the cylinder, has guaranteed that the hydraulic oil in the cylinder can not spill over the outside of cylinder to the leakproofness of canned type piston rod end cover has been promoted.
2. This canned type piston rod end cover uses through the cooperation of ring spring, card strip and spacing hole, when making two screws rotate respectively to the top and the bottom of cylinder one side, can not appear not hard up condition because of the vibrations that produce during the motion of hydro-cylinder pole to canned type piston rod end cover's stability has been promoted.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of the structure of the present invention at a.
In the figure: 1. a cylinder barrel; 2. an annular neck; 3. an end cap; 4. an annular groove; 5. a rectangular groove; 6. a limiting block; 7. an annular slider; 8. a first seal ring; 9. a sloping block; 10. a second seal ring; 11. a circular hole; 12. a through hole; 13. a screw; 14. clamping the strip; 15. an annular spring; 16. and a limiting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a sealed piston rod end cap comprises a cylinder barrel 1, a ring-shaped clamping groove 2 is formed in the middle of one side of the cylinder barrel 1, an end cap 3 is movably sleeved on one side of the cylinder barrel 1 close to the ring-shaped clamping groove 2, a ring-shaped groove 4 is formed in the middle of the end cap 3, rectangular grooves 5 are respectively formed in the middle of the top end and the middle of the bottom end of an inner cavity of the ring-shaped groove 4, a limiting block 6 is movably sleeved inside the rectangular groove 5, the limiting block 6 is rectangular, the outer portion of the limiting block 6 is slidably connected with the inner portion of the rectangular groove 5, a first sealing ring 8 and a ring-shaped sliding block 7 are not separated from the end cap 3 when the end cap 3 is separated from the cylinder barrel 1 through the matching use of the limiting block 6 and the rectangular groove 5, so that the rationality of the sealed piston rod end cap is improved, one end, the first sealing ring 8 is made of natural rubber, one end of the first sealing ring 8 penetrates through and extends into the annular clamping groove 2, the outer portion of the first sealing ring 8 is connected with the inner portion of the annular clamping groove 2 in a sliding mode, it is guaranteed that no gap exists between the annular clamping groove 2 and the first sealing ring 8, hydraulic oil in the cylinder barrel 1 is prevented from flowing out from the annular clamping groove 2 and the first sealing ring 8, accordingly, the sealing performance of the sealing type piston rod end cover is improved, the other side of the annular sliding block 7 is connected with the inclined blocks 9 in a sliding mode, the number of the inclined blocks 9 is twenty-thirty, the inclined blocks 9 are distributed on the outer portion of the second sealing ring 10 in an annular mode, the outer portion of the inclined blocks 9 is connected with the inner portion of the annular groove 4 in a sliding mode, and gaps do not exist between the end cover 3 and the cylinder barrel 1 and between the end cover 3 and the cylinder barrel 1 through the cooperation of, the hydraulic oil in the cylinder barrel 1 is ensured not to overflow the outside of the cylinder barrel 1, thereby improving the sealing performance of the sealed piston rod end cover, the other end of the inclined block 9 is fixedly connected with a second sealing ring 10, the top end and the bottom end of the end cover 3 are respectively provided with a round hole 11, the middle part of the top end of the inner cavity of the round hole 11 is provided with a through hole 12, the top end and the bottom end of the side of the cylinder barrel 1 close to the end cover 3 are respectively in threaded sleeve joint with a screw 13 positioned in the round hole 11, one end of the two screws 13 penetrates through and extends to the outside of the round hole 11, the inside of the through hole 12 is movably sleeved with a clamping strip 14, one end of the clamping strip 14 far away from the annular spring 15 penetrates through the round hole 11 and extends to the inside of the limiting hole 16, the outside of the clamping strip 14 is in sliding connection with the inside of the limiting hole, thereby the stability of canned type piston rod end cover has been promoted, the outside activity of card strip 14 has cup jointed the annular spring 15 that is located the 3 outsides of end cover, the one end of annular spring 15 and the one end fixed connection of card strip 14, the other end of annular spring 15 and the 3 outside one end fixed connection of end cover, through annular spring 15, the cooperation of card strip 14 and spacing hole 16 is used, when making two screws 13 rotatory respectively to the top and the bottom of cylinder 1 one side, can not appear not hard up condition because of the vibrations that produce during the motion of hydro-cylinder pole, thereby the stability of canned type piston rod end cover has been promoted, spacing hole 16 that is located 11 insides of round hole is seted up to the one end of screw 13.
When the cylinder barrel works, firstly, the end cover 3 is placed in one side of the cylinder barrel 1, the clamping strip 14 is lifted, the clamping strip 14 is separated from the limiting hole 16, then the two screws 13 are respectively rotated to the top end and the bottom end of one side of the cylinder barrel 1, in the rotating process of the screws 13, the end cover 3 and the cylinder barrel 1 are close to each other, one end of the first sealing ring 8 is firstly contacted with one side in the annular clamping groove 2, then the screws 13 are continuously rotated, the end cover 3 and the cylinder barrel 1 are continuously close to each other, the first sealing ring 8 pushes the annular sliding block 7, the annular sliding block 7 pushes the inclined block 9 to enable the inclined block 9 to extrude the second sealing ring 10, the inner wall of the second sealing ring 10 is tightly contacted with the outer wall of the piston rod, when the outer part of the end cover 3 is attached to the inner part of one side of the cylinder barrel 1, finally, the clamping strip 14 is released, the clamping strip 14 is inwards contracted under, and (4) finishing.
In conclusion, according to the sealed piston rod end cover, through the matched use of the inclined block 9, the second sealing ring 10, the first sealing ring 8 and the annular sliding block 7, gaps do not exist between the end cover 3 and the cylinder barrel 1 and between the end cover 3 and an oil cylinder rod in the cylinder barrel 1, and it is guaranteed that hydraulic oil in the cylinder barrel 1 cannot overflow out of the cylinder barrel 1, so that the sealing performance of the sealed piston rod end cover is improved; the problem of between the end cover 3 of piston rod and the cylinder 1 all adopt screw 13 to fix usually, and do not use seal structure to seal the junction, make to have the clearance between end cover 3 and the cylinder 1, in case the inside hydraulic oil of cylinder 1 overflows cylinder 1, hydraulic oil just can spill over from between end cover 3 and the cylinder 1, make the energy conversion efficiency of piston rod reduce, and the long-time use of piston rod, make screw 13 appear not hard up condition because of the piston rod vibrations easily, poor stability is solved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a canned type piston rod end cover, includes cylinder (1), its characterized in that: the middle part of one side of the cylinder barrel (1) is provided with an annular clamping groove (2), one side of the cylinder barrel (1) close to the annular clamping groove (2) is movably sleeved with an end cover (3), the middle part of the end cover (3) is provided with an annular groove (4), the middle parts of the top end and the bottom end of an inner cavity of the annular groove (4) are respectively provided with a rectangular groove (5), a limiting block (6) is movably sleeved in the rectangular groove (5), one end of the limiting block (6) penetrates through and extends into the annular groove (4) and is fixedly connected with an annular sliding block (7), one side of the annular sliding block (7) is fixedly connected with a first sealing ring (8), the other side of the annular sliding block (7) is slidably connected with an inclined block (9), the other end of the inclined block (9) is fixedly connected with a second sealing ring (10), and the top end and the, through-hole (12) have been seted up at the middle part on round hole (11) inner chamber top, screw (13) that are located round hole (11) inside have been cup jointed to cylinder (1) top and bottom that are close to end cover (3) one side respectively the screw, two the outside that runs through and extend to round hole (11) of one end of screw (13), the inside activity of through-hole (12) has been cup jointed and has been blocked strip (14), the outside activity of blocking strip (14) has been cup jointed and has been located the outside ring spring (15) of end cover (3), spacing hole (16) that are located round hole (11) inside are seted up to the one end of screw (13).
2. A sealed piston rod end cap according to claim 1, wherein: the limiting block (6) is rectangular, and the outer portion of the limiting block (6) is connected with the inner portion of the rectangular groove (5) in a sliding mode.
3. A sealed piston rod end cap according to claim 1, wherein: the material of first sealing washer (8) is natural rubber, the inside that runs through and extend to ring groove (2) in the one end of first sealing washer (8), and the inside sliding connection of the outside of first sealing washer (8) and ring groove (2).
4. A sealed piston rod end cap according to claim 1, wherein: the number of the inclined blocks (9) is twenty to thirty, the inclined blocks are annularly distributed outside the second sealing ring (10), and the outside of the inclined blocks (9) is in sliding connection with the inside of the annular groove (4).
5. A sealed piston rod end cap according to claim 1, wherein: one end, far away from the annular spring (15), of the clamping strip (14) penetrates through the round hole (11) and extends to the inside of the limiting hole (16), and the outside of the clamping strip (14) is connected with the inside of the limiting hole (16) in a sliding mode.
6. A sealed piston rod end cap according to claim 1, wherein: one end of the annular spring (15) is fixedly connected with one end of the clamping strip (14), and the other end of the annular spring (15) is fixedly connected with one end of the outer portion of the end cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810881283.3A CN110805587A (en) | 2018-08-05 | 2018-08-05 | Sealed piston rod end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810881283.3A CN110805587A (en) | 2018-08-05 | 2018-08-05 | Sealed piston rod end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110805587A true CN110805587A (en) | 2020-02-18 |
Family
ID=69486896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810881283.3A Pending CN110805587A (en) | 2018-08-05 | 2018-08-05 | Sealed piston rod end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110805587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659513A (en) * | 2021-06-29 | 2021-11-16 | 上海沪电电力工程有限公司 | Overhead line drives bird ware |
-
2018
- 2018-08-05 CN CN201810881283.3A patent/CN110805587A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659513A (en) * | 2021-06-29 | 2021-11-16 | 上海沪电电力工程有限公司 | Overhead line drives bird ware |
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