CN216478155U - Novel hydraulic cylinder threaded cylinder cover static sealing structure - Google Patents
Novel hydraulic cylinder threaded cylinder cover static sealing structure Download PDFInfo
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- CN216478155U CN216478155U CN202123341324.6U CN202123341324U CN216478155U CN 216478155 U CN216478155 U CN 216478155U CN 202123341324 U CN202123341324 U CN 202123341324U CN 216478155 U CN216478155 U CN 216478155U
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Abstract
The utility model discloses a novel hydraulic cylinder screw thread formula cylinder cap static seal structure belongs to hydraulic cylinder technical field, including screw thread formula cylinder cap main part and cylinder, the one end threaded connection of screw thread formula cylinder cap main part is to the inside of cylinder, the seal groove has been seted up at the middle part of screw thread formula cylinder cap main part, inside the difference cover of seal groove is equipped with O shape circle and retaining ring. The utility model discloses a, make O shape circle compression volume reduce, make relative fit clearance between screw thread formula cylinder cap main part and the cylinder reduce, improved the assembly axiality between screw thread formula cylinder cap main part and cylinder, avoided the problem of the quiet sealed department O shape circle fish tail of screw thread formula cylinder cap main part in the assembling process, guaranteed hydraulic cylinder's performance, reduced the rejection rate of pneumatic cylinder.
Description
Technical Field
The utility model relates to a hydraulic cylinder technical field, more specifically say, relate to a novel hydraulic cylinder screw thread formula cylinder cap static seal structure.
Background
The engineering machinery industry is developed vigorously, the hydraulic cylinder is taken as a main execution element on the engineering machinery and widely applied, the hydraulic cylinder mainly comprises a cylinder body, a piston rod, a cylinder cover, a sealing element and other parts, the connection modes of the cylinder cover and the cylinder body are many, flange type, thread type and clamping key type are common, wherein the thread type cylinder cover has the advantages of small volume, light weight and the like and is widely applied to hydraulic cylinders such as high-altitude operation platform cars, road obstacle clearing operation mechanical cars and the like, on machinery, whether the coaxiality between the thread type cylinder cover and the cylinder body is reasonably matched directly influences the integral service performance of the cylinder, the coaxiality between the cylinder cover and the cylinder body is poor, the conditions of ' seizing ' of cylinder cover threads ' during the assembly process of the hydraulic cylinder, the sealing element of the cylinder cover, and the like are easily caused, if the cylinder cover is sealed and scratched, the external leakage is caused, so that the internal pressure of the hydraulic cylinder is lower than the working pressure, the service performance of the hydraulic oil cylinder is reduced, the oil cylinder is out of work, and therefore a novel threaded cylinder cover static sealing structure of the hydraulic oil cylinder is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a novel hydraulic cylinder screw thread formula cylinder cap static seal structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
The utility model provides a novel hydraulic cylinder screw thread formula cylinder cap static seal structure, includes screw thread formula cylinder cap main part and cylinder, the one end threaded connection of screw thread formula cylinder cap main part is to the inside of cylinder, the seal groove has been seted up at the middle part of screw thread formula cylinder cap main part, inside the difference cover of seal groove is equipped with O shape circle and retaining ring.
Compared with the prior art, the utility model has the advantages of:
(1) this scheme makes O shape circle compression volume reduce, makes between screw thread formula cylinder cap main part and the cylinder relative fit clearance reduce, has improved the assembly axiality between screw thread formula cylinder cap main part and the cylinder, has avoided the problem of the O shape circle fish tail of the quiet sealing department of screw thread formula cylinder cap main part in the assembling process, has guaranteed hydraulic cylinder's performance, has reduced the rejection rate of pneumatic cylinder.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of a in fig. 1 according to the present invention.
The reference numbers in the figures illustrate:
1. a threaded cylinder head body; 2. a cylinder barrel; 3. an O-shaped ring; 4. and a retainer ring.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention;
please refer to fig. 1-2, in the present invention, a novel static sealing structure for a threaded cylinder cover of a hydraulic cylinder comprises a threaded cylinder cover main body 1 and a cylinder barrel 2, wherein one end of the threaded cylinder cover main body 1 is connected to the inside of the cylinder barrel 2 through a thread, a sealing groove is formed in the middle of the threaded cylinder cover main body 1, and an O-ring 3 and a retainer ring 4 are respectively sleeved inside the sealing groove.
In the utility model, the O-shaped ring 3 is used with the retainer ring 4, which is convenient for playing a sealing effect when the thread cylinder cover main body 1 is connected with the cylinder barrel 2, the size of the bottom and the top of the seal groove on the thread cylinder cover main body 1 is increased by 1mm compared with the traditional seal groove, the size of the inner hole of the cylinder barrel 2 static seal matched with the thread cylinder cover main body 1 is increased by 1mm, the size of the inner hole of the cylinder barrel 2 matched with the piston matching surface is unchanged, the size of the retainer ring 4 matched with the O-shaped ring 3 is increased by 1mm compared with the traditional specification, thus the compression amount of the O-shaped ring 3 at the static seal position is reduced, the relative fit clearance between the thread cylinder cover main body 1 and the cylinder barrel 2 is reduced, the assembly coaxiality between the thread cylinder cover main body 1 and the cylinder barrel 2 is improved, the scratch problem of the O-shaped ring 3 at the static seal position of the thread cylinder cover main body in the assembly process is avoided, the service performance of the hydraulic oil cylinder is ensured, the rejection rate of the hydraulic cylinder is reduced.
The working principle is as follows: seal groove on the screw thread formula cylinder cap main part 1, compare traditional seal groove, tank bottom and groove top size increase 1mm, increase 1mm simultaneously with screw thread formula cylinder cap main part 1 complex 2 static seal hole sizes of cylinder, 2 hole sizes of cylinder with piston fitting surface complex are unchangeable, compare traditional specification and size increase 1mm with O shape circle 3 complex retaining ring 4, make static seal department O shape circle 3 compression volume of compression reduce like this, make between screw thread formula cylinder cap main part 1 and the cylinder 2 relative fit clearance reduce, the assembly axiality between screw thread formula cylinder cap main part 1 and the cylinder 2 has been improved, the problem of the static seal department O shape circle 3 fish tail of screw thread formula cylinder cap main part in the assembling process has been avoided, hydraulic cylinder's performance has been guaranteed, the rejection rate of pneumatic cylinder has been reduced, obtain obvious economic benefits.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the protection scope of the present invention by replacing or changing the technical solution and the modified concept of the present invention within the technical scope of the present invention.
Claims (1)
1. The utility model provides a novel quiet seal structure of hydraulic cylinder screw thread formula cylinder cap, includes screw thread formula cylinder cap main part (1) and cylinder (2), its characterized in that: one end threaded connection of screw thread formula cylinder cap main part (1) is to the inside of cylinder (2), the seal groove has been seted up at the middle part of screw thread formula cylinder cap main part (1), the inside cover of seal groove is equipped with O shape circle (3) and retaining ring (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123341324.6U CN216478155U (en) | 2021-12-28 | 2021-12-28 | Novel hydraulic cylinder threaded cylinder cover static sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123341324.6U CN216478155U (en) | 2021-12-28 | 2021-12-28 | Novel hydraulic cylinder threaded cylinder cover static sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216478155U true CN216478155U (en) | 2022-05-10 |
Family
ID=81429195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123341324.6U Active CN216478155U (en) | 2021-12-28 | 2021-12-28 | Novel hydraulic cylinder threaded cylinder cover static sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216478155U (en) |
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2021
- 2021-12-28 CN CN202123341324.6U patent/CN216478155U/en active Active
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