CN2615405Y - Four-position oil cylinder - Google Patents
Four-position oil cylinder Download PDFInfo
- Publication number
- CN2615405Y CN2615405Y CN 03212169 CN03212169U CN2615405Y CN 2615405 Y CN2615405 Y CN 2615405Y CN 03212169 CN03212169 CN 03212169 CN 03212169 U CN03212169 U CN 03212169U CN 2615405 Y CN2615405 Y CN 2615405Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- piston rod
- sliding sleeve
- end cap
- flip sleeve
- 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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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model relates to a four location hydraulic cylinder, comprising a valve body, a sliding sleeve and a piston rod or the like, wherein the valve body is screwed permanently joint with an end cap, the bottom of the end cap is provided with a sealing ring, the sliding sleeve arranged in the valve body freely slides, the position of the sliding sleeve is limited by the valve body and the end cap, a sealing ring is arranged outside the sliding sleeve and a jump ring is arranged inside the sliding sleeve, the piston rod is arranged in the sliding sleeve, the anterior segment of the piston rod is arranged in the valve body, and the piston rod is limited by the valve body and the sliding sleeve. The utility model has the advantages of simple structure, good manufacturability, easy control, accurate and reliable work and rapid response gear box automatic selecting grade mechanism.
Description
Technical field:
The utility model relates to a kind of four position oil cylinders, specifically can realize the gear shift of four positions quickly and accurately, belongs to the automatic gearbox field.
Background technique:
Present automatic gearbox mainly contains hydraulic mechanical type automatic transmission (AT), three types of stepless speed variator (CVT) and electric control mechanical type automatic speed variators (AMT); Hydraulic mechanical type automatic transmission (AT) is to realize the earliest and most widely used automatic gearbox, it does not cut off power gear shifting, have starting, smooth gear shifting, can adapt to resisting moment is changed, but exist complex structure, difficultly make, shortcoming such as transmission efficiency is low.Manually fixedly the shaft type gear-shift transmission is the step change driving mechanism, is present extensive use, and its advantage is the efficient height, and cost is low, mature production technology; But exist the gear shift difficulty, power interruption during gear shift, it requires the driver very skilled.Electric control mechanical type automatic speed variator (AMT) is to make the fixed shaft transmission automation by microcomputer control, kept original gear speed changer transmission efficiency height, installing space compactness, in light weight, cost is low, easy manufacturing, safeguard advantages such as easy.AMT is on the basis of conventional fixed axis transmission and two formula clutches, application electric technology and automatic speed changing theory, with the electronic control unit is core, separate and engage, select gear-change operation and control the fuel feeding of motor by the hydraulic actuator solenoidoperated cluthes, realize starting to walk, the automatic manipulation of gear shift by electronic equipment.The working principle of AMT is a cut-off clutch at first, then speed changer is plucked neutral gear, carries out gear selecting, gear shift again, the clutch of rejoining at last; And when after the clutch separation before clutch engages again again, the power of motor can not be passed to wheel and go the powered vehicle operation, so cause the interruption of the transmission of power in the gearshift procedure easily, make vehicle produce retardation and shift time long, and bring adverse effect to the acceleration of vehicle, travelling comfort etc.
Summary of the invention:
The purpose of this utility model is to provide a kind of four position oil cylinders, has adopted the working principle of hydraulic pressure difference location, realizes the switching of four positions of gear selecting, it has simple in structure, technology capability is good, and control is convenient, work accurately and reliably, the fast automatic gear selecting of the gearbox mechanism of speed of response.
The technical solution of the utility model is achieved in that four position oil cylinders, is made up of valve body, flip sleeve and piston rod etc.; Wherein valve body is fixedlyed connected by screw thread with end cap, in the bottom of end cap seal ring is housed; Flip sleeve is contained in the valve body and is free to slide, and its position is limited by valve body and end cap, in the flip sleeve outside seal ring is housed, and jump ring is equipped with in inside; Piston rod is contained in the flip sleeve, and the leading portion of its piston rod is in valve body, and piston rod is limited by valve body and flip sleeve.
Good effect of the present utility model is: realize the switching of four positions of gear selecting, it has simple in structure, and technology capability is good, and control is convenient, work accurately and reliably, the fast automatic gear selecting of the gearbox mechanism of speed of response.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Embodiment:
The utility model will be further described below in conjunction with accompanying drawing: as shown in Figure 1, four position oil cylinders are made up of valve body 1, flip sleeve 3 and piston rod 4 etc.; Wherein valve body 1 and end cap 2 are fixedlyed connected by screw thread, in the bottom of end cap 2 seal ring are housed; Flip sleeve 3 is contained in the valve body 1 and is free to slide, and its position is limited by valve body 1 and end cap 2, in flip sleeve 3 outsides seal ring is housed, and jump ring 5 is equipped with in inside; Piston rod 4 is contained in the flip sleeve 3, and the leading portion of its piston rod 4 is in valve body 1, and piston rod 4 is limited by valve body 1 and flip sleeve 3.When A, the work of B face pressurized, piston rod 4 all is in retracted position with flip sleeve 3, is gear selecting working position I; When A, B, the work of D face pressurized, piston rod 4 is bound up with flip sleeve 3 and moves a stroke position to the left, is gear selecting working position II; When A, B, the work of C face pressurized, flip sleeve 3 is withdrawn into initial position, and piston rod 4 stretches out, because piston rod 4 strokes are two times of flip sleeve 3 strokes, moves two stroke positions to the left so be equivalent to piston rod 4, reaches gear selecting working position III; When C, the work of D face pressurized, piston rod 4 all is moved to the left to maximum position with flip sleeve 3, and moving total distance is three stroke positions, arrives gear selecting position V.Like this, four position oil cylinders of the present utility model can accurate in locating four positions, satisfied the requirement of four gear selecting positions of needs in six grades of gearboxes.Solve the automatic gear selecting problem of exploitation AMT system on the vehicle of the gearbox that six forward gearss are housed as bus, lorry etc., can promote the application of AMT technology on large vehicle.
Claims (1)
1, a kind of four position oil cylinders are made up of valve body (1), flip sleeve (3) and piston rod (4) etc.; It is characterized in that: valve body (1) is fixedlyed connected by screw thread with end cap (2), in the bottom of end cap (2) seal ring is housed; Flip sleeve (3) is contained in the valve body (1) and is free to slide, and its position is limited by valve body (1) and end cap (2), in flip sleeve (3) outside seal ring is housed, and jump ring (5) is equipped with in inside; Piston rod (4) is contained in the flip sleeve (3), and the leading portion of its piston rod (4) is in valve body (1), and piston rod (4) is limited by valve body (1) and flip sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03212169 CN2615405Y (en) | 2003-03-26 | 2003-03-26 | Four-position oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03212169 CN2615405Y (en) | 2003-03-26 | 2003-03-26 | Four-position oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615405Y true CN2615405Y (en) | 2004-05-12 |
Family
ID=34241804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03212169 Expired - Fee Related CN2615405Y (en) | 2003-03-26 | 2003-03-26 | Four-position oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615405Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386406A (en) * | 2018-01-31 | 2018-08-10 | 东风商用车有限公司 | A kind of air cylinder structure and its application process |
| CN110886840A (en) * | 2018-09-11 | 2020-03-17 | 上海汽车变速器有限公司 | Automatic gear shifting mechanism of transmission |
| CN113958571A (en) * | 2021-09-22 | 2022-01-21 | 南通久固自动化设备有限公司 | Hydraulic device with displacement monitoring function |
-
2003
- 2003-03-26 CN CN 03212169 patent/CN2615405Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386406A (en) * | 2018-01-31 | 2018-08-10 | 东风商用车有限公司 | A kind of air cylinder structure and its application process |
| CN110886840A (en) * | 2018-09-11 | 2020-03-17 | 上海汽车变速器有限公司 | Automatic gear shifting mechanism of transmission |
| CN113958571A (en) * | 2021-09-22 | 2022-01-21 | 南通久固自动化设备有限公司 | Hydraulic device with displacement monitoring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA FAW CO., LTD. Free format text: FORMER OWNER: CHINESE AUTO GROUP CO NO.1 Effective date: 20111114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111114 Address after: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Patentee after: China FAW Group Corporation Address before: 130011 No. 83 Dongfeng Avenue, Jilin, Changchun Patentee before: China FAW Group Corporation |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040512 Termination date: 20120326 |