CN202732120U - Fuel cut-off cylinder for engines - Google Patents
Fuel cut-off cylinder for engines Download PDFInfo
- Publication number
- CN202732120U CN202732120U CN 201220439478 CN201220439478U CN202732120U CN 202732120 U CN202732120 U CN 202732120U CN 201220439478 CN201220439478 CN 201220439478 CN 201220439478 U CN201220439478 U CN 201220439478U CN 202732120 U CN202732120 U CN 202732120U
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- CN
- China
- Prior art keywords
- cylinder
- end cover
- spring
- return spring
- rear end
- 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
A fuel cut-off cylinder for engines structurally comprises a front end cover, a rear end cover and a cylinder barrel. A piston rod component, a front spring seat, a middle spring seat and a return spring are disposed in the cylinder barrel. A felt air filter gasket and a retaining ring are disposed in the front end cover. A through hole is arranged at the top end of the front end cover. A rectangular sealing gasket is disposed in the rear end cover. A U-shaped ring is fitted to the piston rod component. A stainless steel V-shaped spring is mounted in the U-shaped ring. The return spring is in a waist drum structure. The U-shaped ring made of polytetrafluoroethylene is used as a sealing part, so that the requirements for working conditions such as high cylinder temperature and poor cylinder lubrication can be met. The return spring is in the waist drum structure, so that scratch of the cylinder wall due to lateral bending of the spring can be effectively avoided. By the aid of the felt air filter gasket in the front end cover, solid particles can be prevented from entering the cylinder during operation of the cylinder. In addition, the fuel cut-off cylinder for engines is stable in performance, reasonable in design, reliable in operation, and long in service life.
Description
Technical field
The utility model relates to a kind of heavy-duty car motor cut off the fuel oil cylinder, specifically a kind of single-acting manipulating cylinder.
Background technique
At present, heavy duty truck, Large and medium buses adopt cut off the fuel oil cylinder to cut off oil circuit mostly, this product is installed and used near motor, operating temperature is higher, in the market conventional products sealing material selection and product structure are difficult to satisfy the worst hot case demand, be mainly manifested in: 1, lubricating grease non-refractory, accelerate the wearing and tearing of Sealing after solidifying; 2, spring stability is inadequate, during cut off the fuel oil cylinder work, and the spring lateral bending, the cylinder barrel wall is pulled in scraping, finally causes cylinder seal to lose efficacy the working life of having reduced cut off the fuel oil cylinder, in recent years, also have many cut off the fuel oil cylinder manufacturers to do architecture advances, but using effect was all undesirable.
The model utility content
The purpose of this utility model is to provide a kind of motor cut off the fuel oil cylinder, and this cut off the fuel oil cylinder can effectively slow down the wearing and tearing of cylinder seal spare and prevent spring to the pulling of casing wall, thereby increases substantially the working life of cut off the fuel oil cylinder.
The technical scheme in the invention for solving the technical problem is: a kind of motor cut off the fuel oil cylinder, comprise the cylinder barrel of front cover, rear end cover and connection front cover and rear end cover, be provided with piston rod assembly, front spring seat, middle springs seat and return spring in the cylinder barrel; Be provided with felt filter air cushion, back-up ring in the described front cover, the front cover top is provided with through hole; Be provided with the rectangular seal pad in the described rear end cover; U-shaped circle is housed on the described piston rod assembly, stainless steel V-type spring is housed in the described U-shaped circle; Described return spring adopts dolioform structure, and the section of return spring forms the camber line that concaves.
Described U-shaped circle adopts teflon to make.
Compared with prior art, the utlity model has following beneficial effect: cylinder adopts the U-shaped circle of teflon as Sealing, can satisfy the needs of the operating modes such as cylinder high temperature, insufficient lubrication; The cylinder return spring adopts dolioform structure, and its section forms the camber line that concaves, and has effectively avoided the scuffing of spring bending to the cylinder barrel wall; The use of front cover felt filter air cushion, solid particle enters cylinder barrel when having avoided cylinder to breathe.Has stable performance, reasonable in design, reliable operation, the characteristics of long service life.
Description of drawings
Fig. 1 is sectional structure schematic representation of the present utility model;
Fig. 2 is the structure for amplifying schematic representation of the utility model piston rod assembly hermetic unit.
Among the figure: 1 piston rod assembly, 2 through holes, 3 felts filter air cushion, 4 back-up rings, 5 front covers, 6 front spring seats, 7 middle springs seats, 8 return springs, 9 cylinder barrels, 10 rectangular seal pads, 11 rear end covers, 12U type circle, 13 stainless steel V-type springs.
Embodiment
Below in conjunction with Figure of description 1 and accompanying drawing 2 and embodiment the utility model is further described:
A kind of motor cut off the fuel oil cylinder comprises front cover 5, rear end cover 11 and connects the cylinder barrel 9 of front cover 5 and rear end cover 11, is provided with piston rod assembly 1, front spring seat 6, middle springs seat 7 and return spring 8 in the cylinder barrel 9; Be provided with felt filter air cushion 3, back-up ring 4 in the described front cover 5, front cover 5 tops are provided with through hole 2; Be provided with rectangular seal pad 10 in the described rear end cover 11; U-shaped circle 12 is housed on the described piston rod assembly 1, in the described U-shaped circle 12 stainless steel V-type spring 13 is housed; Described return spring 8 adopts dolioform structure, and the section of return spring 8 forms the camber line that concaves.
Described U-shaped circle 12 adopts teflon to make.
Cylinder adopts the U-shaped circle of teflon 12 as Sealing in the utility model, can satisfy the needs of the operating modes such as cylinder high temperature, insufficient lubrication, stainless steel V-type spring 13 is housed in the U-shaped circle 12, suitable spring force adds system fluid pressure, its seal operation lip is ejected and pushes down gently sealed face, to produce very excellent sealing effect, the certainly profit characteristic that polytetrafluoroethylmaterial material is given prominence to, reduce friction, thereby prolonged the working life of cut off the fuel oil cylinder.Cylinder return spring 8 adopts dolioform structure, and its section forms the camber line that concaves, and has effectively avoided the scuffing of return spring 8 lateral bendings to cylinder barrel 9 inwalls.The use of front cover 5 internal hair felt filter air cushions 3, solid particle enters cylinder barrel 9 when having avoided cylinder to breathe, and has effectively avoided the wearing and tearing of inner wall of cylinder and Sealing, has improved the working life of cylinder.
The above, principles more of the present utility model just explain through diagrams, this specification be not be the utility model to be confined to shown in described concrete structure and the Applicable scope, so every corresponding modify that might be utilized and equivalent, all belong to the claim that the utility model is applied for, particularly the manipulating cylinder in heavy-duty car differential lock cylinder and the exhaust auxiliary brake system.
Except the described technical characteristics of specification, all the other technical characteristicss are those skilled in the art's known technology.
Claims (2)
1. motor cut off the fuel oil cylinder comprises front cover, rear end cover and connects the cylinder barrel of front cover and rear end cover, it is characterized in that, is provided with piston rod assembly, front spring seat, middle springs seat and return spring in the cylinder barrel; Be provided with felt filter air cushion, back-up ring in the described front cover, the front cover top is provided with through hole; Be provided with the rectangular seal pad in the described rear end cover; U-shaped circle is housed on the described piston rod assembly, stainless steel V-type spring is housed in the described U-shaped circle; Described return spring adopts dolioform structure, and the section of return spring forms the camber line that concaves.
2. a kind of motor cut off the fuel oil cylinder according to claim 1 is characterized in that, described U-shaped circle adopts teflon to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439478 CN202732120U (en) | 2012-08-30 | 2012-08-30 | Fuel cut-off cylinder for engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439478 CN202732120U (en) | 2012-08-30 | 2012-08-30 | Fuel cut-off cylinder for engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732120U true CN202732120U (en) | 2013-02-13 |
Family
ID=47657830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220439478 Expired - Fee Related CN202732120U (en) | 2012-08-30 | 2012-08-30 | Fuel cut-off cylinder for engines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817720A (en) * | 2012-08-30 | 2012-12-12 | 济南鲁新金属制品有限公司 | Fuel-cut cylinder of engine |
-
2012
- 2012-08-30 CN CN 201220439478 patent/CN202732120U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817720A (en) * | 2012-08-30 | 2012-12-12 | 济南鲁新金属制品有限公司 | Fuel-cut cylinder of engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20130830 |