CN202851507U - Horizontal oil cylinder capable of preventing inner leakage - Google Patents
Horizontal oil cylinder capable of preventing inner leakage Download PDFInfo
- Publication number
- CN202851507U CN202851507U CN 201220454194 CN201220454194U CN202851507U CN 202851507 U CN202851507 U CN 202851507U CN 201220454194 CN201220454194 CN 201220454194 CN 201220454194 U CN201220454194 U CN 201220454194U CN 202851507 U CN202851507 U CN 202851507U
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- piston
- cylinder body
- cylinder
- oil cylinder
- internal leakage
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Abstract
The utility model discloses a horizontal oil cylinder capable of preventing inner leakage. The horizontal oil cylinder comprise a cylinder body, a front cap and a rear cap for respectively sealing the front end rear ends of the cylinder body, and a piston rod arranged in the cylinder body and protruding out of the front cap. A piston dividing the inner chamber of the cylinder body into a front chamber and a rear chamber and an extruding device tightly pressed against the piston are sequentially arranged on the piston rod at the tail end of the cylinder body. An elastic sealing member, of with the external diameter is expansible, is arranged on the external surface of the piston. A metallic layer on the external surface of the piston of a conventional horizontal oil cylinder is replaced by an elastic sealing member with an expansible external diameter. The piston, while maintaining the functions of sealing and separating front and rear chambers, prevents inner leakage by extruding the elastic sealing member via the extruding device to expend the outer diameter of the elastic sealing member and compensate the worn position, when inner leakage occurs due to the worn sealing member. The horizontal oil cylinder is simple and delicate in structure, and can be widely used in machining and manufacturing industry.
Description
Technical field
The utility model relates to the oil cylinder in a kind of mechanical field.
Background technique
Oil cylinder comprises cylinder body, front capping, rear seal-cover, is provided with the piston rod of capping before passing in cylinder body, and the end that piston rod is positioned at cylinder body is provided with piston, and piston has been divided into ante-chamber and back cavity two-part with inner chamber of cylinder block.Usually, piston integral body is to adopt Cu alloy material to make, and quality is heavier.
Although itself has sealing characteristics oil cylinder, can furnish by many attitude, cylinder body, piston rod and piston have deadweight after all, and this deadweight meeting produces certain influence to the motion of oil cylinder.Especially for some piston from great, often work in the cross cylinder of the occasion of frequent vibrations, piston is just easily in the middle generation wearing and tearing that constantly move back and forth, piston external diameter is by skiving, thereby causes having produced communication gap between the chamber, front and back of oil cylinder.So, the fluid between the chamber, front and back is easily mutual play just, produces internal leakage.The internal leakage meeting causes cylinder action uncontrollable, brings the rate of starting of equipment low, causes the part quality of production of machinery to guarantee, the Facilities Engineer of industry and production engineer wish to solve this difficult problem urgently.
The model utility content
The purpose of this utility model is to provide a kind of cross cylinder that can prevent internal leakage.
The solution that the utility model solves its technical problem is:
A kind of cross cylinder that can prevent internal leakage, comprise cylinder body, front capping, rear seal-cover, front capping and rear seal-cover close the rear and front end of cylinder body respectively, be provided with the piston rod that passes front capping in the cylinder body, the latter end that piston rod is positioned at cylinder body is provided with the piston that the inner chamber of cylinder body is divided into ante-chamber and back cavity successively, and the squeezing unit of being close to piston, the outer surface of described piston is provided with the elastomer seal that external diameter can swell.
As further improvement in the technical proposal, have the multiple tracks annular groove on the periphery wall of described piston, described annular groove is concentric with piston; The each several part of described elastomer seal distributes as follows: upwards be nested in the annular groove towards the part of cylinder body axis in the footpath, make progress away from the part of cylinder body axis and the inwall close contact of cylinder body in the footpath, forward part and piston abuts on axially, on axially backwards part and squeezing unit against.
As further improvement in the technical proposal, the width of described annular groove is 2mm.
As further improvement in the technical proposal, described elastomer seal is V-type sealed nylon circle.
As further improvement in the technical proposal, described squeezing unit be upper at piston-rod end, be positioned at the accent crack nut of cylinder body.
The beneficial effects of the utility model are: the elastomer seal that the utility model utilizes external diameter to swell replaces the outer surface of piston metal layer in traditional cross cylinder, have equally sealing, separate the function in chamber, front and back, if and Sealing has wearing and tearing when internal leakage occurring, can push elastomer seal by squeezing unit, its external diameter is swollen, the position of compensate for wear, thus prevent internal leakage.The utility model simple and ingenious structure can be widely used in the machining manufacturing industry.
Description of drawings
In order to be illustrated more clearly in the technological scheme among the utility model embodiment, the accompanying drawing of required use was done simple declaration during the below will describe embodiment.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than whole embodiment, and those skilled in the art can also obtain other design proposals and accompanying drawing according to these accompanying drawings under the prerequisite of not paying creative work.
Fig. 1 is structure sectional schematic of the present utility model.
Embodiment
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present utility model, concrete structure and generation, to understand fully the purpose of this utility model, feature and effect.Obviously; described embodiment is a part of embodiment of the present utility model, rather than whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art obtains under the prerequisite of not paying creative work all belong to the scope that the utility model is protected.In addition, all connection/annexations of mentioning in the literary composition are not to refer to that singly member directly joins, and refer to and can connect auxiliary by adding or reducing according to the implementation situation, form more excellent connecting structure.
With reference to Fig. 1, a kind of cross cylinder that can prevent internal leakage, comprise cylinder body 1, front capping 2, rear seal-cover 3, front capping 2 and rear seal-cover 3 close the rear and front end of cylinder body 1 respectively, be provided with the piston rod 4 that passes front capping 2 in the cylinder body 1, the latter end that piston rod 4 is positioned at cylinder body 1 is provided with the piston 5 that the inner chamber of cylinder body 1 is divided into ante-chamber and back cavity successively, and the squeezing unit of being close to piston 5, and the outer surface of described piston 5 is provided with the elastomer seal that external diameter can swell.
Be further used as preferred embodiment, have the multiple tracks annular groove on the periphery wall of described piston 5, described annular groove is concentric with piston 5; The each several part of described elastomer seal distributes as follows: upwards be nested in the annular groove towards the part of cylinder body 1 axis in the footpath, make progress away from the part of cylinder body 1 axis and the inwall close contact of cylinder body 1 in the footpath, on axially forward part and piston 5 against, on axially backwards part and squeezing unit against.
Be further used as preferred embodiment, the width of described annular groove is 2mm.
Be further used as preferred embodiment, described elastomer seal is V-type sealed nylon circle 6.
Be further used as preferred embodiment, described squeezing unit be upper at piston rod 4 ends, be positioned at the accent crack nut 7 of cylinder body 1.Transfer crack nut 7 as long as turn, just can push V-type sealed nylon circle 6, allow its external diameter swell, thereby can remedy the space that produces owing to wearing and tearing, prevent internal leakage.Except adopting this mode of nut, can also adopt Compress Spring to lean, provide the mode such as extruding force to realize.
More than be that preferred embodiments of the present utility model is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite of the utility model spirit, the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (5)
1. cross cylinder that can prevent internal leakage, comprise cylinder body (1), front capping (2), rear seal-cover (3), front capping (2) and rear seal-cover (3) close the rear and front end of cylinder body (1) respectively, be provided with the piston rod (4) that passes front capping (2) in the cylinder body (1), it is characterized in that: the latter end that piston rod (4) is positioned at cylinder body (1) is provided with the piston (5) that the inner chamber of cylinder body (1) is divided into ante-chamber and back cavity successively, and the squeezing unit of being close to piston (5), the outer surface of described piston (5) is provided with the elastomer seal that external diameter can swell.
2. the cross cylinder that can prevent internal leakage according to claim 1, it is characterized in that: have the multiple tracks annular groove on the periphery wall of described piston (5), described annular groove is concentric with piston (5); The each several part of described elastomer seal distributes as follows: upwards be nested in the annular groove towards the part of cylinder body (1) axis in the footpath, make progress away from the part of cylinder body (1) axis and the inwall close contact of cylinder body (1) in the footpath, on axially forward part and piston (5) against, on axially backwards part and squeezing unit against.
3. the cross cylinder that can prevent internal leakage according to claim 2, it is characterized in that: the width of described annular groove is 2mm.
4. the cross cylinder that can prevent internal leakage according to claim 2, it is characterized in that: described elastomer seal is V-type sealed nylon circle (6).
5. the cross cylinder that can prevent internal leakage according to claim 1 is characterized in that: described squeezing unit is upper, the accent crack nut (7) that is positioned at cylinder body (1) terminal at piston rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454194 CN202851507U (en) | 2012-09-07 | 2012-09-07 | Horizontal oil cylinder capable of preventing inner leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454194 CN202851507U (en) | 2012-09-07 | 2012-09-07 | Horizontal oil cylinder capable of preventing inner leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851507U true CN202851507U (en) | 2013-04-03 |
Family
ID=47982714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220454194 Expired - Fee Related CN202851507U (en) | 2012-09-07 | 2012-09-07 | Horizontal oil cylinder capable of preventing inner leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680425A (en) * | 2021-09-14 | 2021-11-23 | 洛阳大华智能科技有限公司 | Hydraulic locking type cone crusher and locking method |
-
2012
- 2012-09-07 CN CN 201220454194 patent/CN202851507U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680425A (en) * | 2021-09-14 | 2021-11-23 | 洛阳大华智能科技有限公司 | Hydraulic locking type cone crusher and locking method |
| CN113680425B (en) * | 2021-09-14 | 2023-01-20 | 洛阳大华智能科技有限公司 | Hydraulic locking type cone crusher and locking method |
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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: 20130403 Termination date: 20150907 |
|
| EXPY | Termination of patent right or utility model |