CN201159216Y - Working cylinder of speed changer air control system - Google Patents
Working cylinder of speed changer air control system Download PDFInfo
- Publication number
- CN201159216Y CN201159216Y CNU2008200976574U CN200820097657U CN201159216Y CN 201159216 Y CN201159216 Y CN 201159216Y CN U2008200976574 U CNU2008200976574 U CN U2008200976574U CN 200820097657 U CN200820097657 U CN 200820097657U CN 201159216 Y CN201159216 Y CN 201159216Y
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- Prior art keywords
- cylinder
- cylinder body
- ring
- piston
- control system
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- Expired - Fee Related
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Abstract
The utility model discloses a working cylinder of a gearbox pneumatic control system, which comprises a cylinder block and a cylinder head. A cylinder is formed by covering the cylinder head on the cylinder block, a shift fork shaft is led into the cylinder to connect to a piston inside the cylinder, a guide ring is arranged on the circumferential surface of the piston, wherein the piston is a double-lip-shaped ring with buffering girdles on two end surfaces, a rubber layer is coated on the outer circle of the piston, and limiting girdles corresponding to the buffering girdles are arranged on the cylinder block and the cylinder head. Further, a liner bearing is arranged on a joint surface of the cylinder block and the shift fork shaft, which is positioned via a steel cable baffle ring. The cylinder is equipped with an open type sealing ring groove, and a sealing ring, a plastic baffle ring and a circlip for holes are sequentially arranged in the sealing ring groove. The working cylinder of a gearbox pneumatic control system increases product wear resistance, reduces shift impaction, prolongs service life, improves sealing reliability of casting, and reduces processing and assembling complexity.
Description
Technical field
The utility model relates to a kind of speed changer pneumatic control system clutch release slave cylinder, and this clutch release slave cylinder has overcome the deficiency of aluminum alloy material wear resistance and impact resistance difference, thereby still can guarantee working life.
Background technique
The effect of speed changer pneumatic control system clutch release slave cylinder is to realize vehicle speed variation, its working principle is: inflate to the clutch release slave cylinder different cavity, reach certain pressure back piston drive declutch shift shaft and move, slide by the shift fork driven gear on the declutch shift shaft, thereby the high and low shift of realizing speed changer switches.Traditional speed changer pneumatic control system clutch release slave cylinder structure is seen Fig. 1, and it mainly is made up of cylinder body 1, piston 2, O-ring seals 9, cylinder cap 5, plug screw 6, packing ring 7, bolt 10, declutch shift shaft 16 etc.Cylinder body 1, cylinder cap 5 adopt gray iron material, and declutch shift shaft 16 adopts steel, and other part adopts standard piece.
Because existing speed changer begins to adopt light-weighted magnesium alloy speed changer, for matching, require the corresponding weight reduction of clutch release slave cylinder in its gas control system system, the means of existing weight reduction change realization by material, be that cylinder body and cylinder cap change aluminum alloy into by original gray iron material, and declutch shift shaft still use steel.But we know, because the wear resistance of aluminum alloy is poor than cast iron, and clutch release slave cylinder is when work, declutch shift shaft and piston constantly with the cylinder body reciprocating friction owing to there is very big lateral pressure (moment of torsion), the working position of cylinder body and axle and seal ring lost efficacy easily and reduces working life.Simultaneously, in gearshift procedure each time, piston all can produce with cylinder body or cylinder cap and impact, the cylinder body of traditional steel part material and cylinder cap, and the ability that withstands shocks is stronger, but for aluminum alloy, this impact repeatedly will influence its working life greatly.What therefore, how to overcome aluminum alloy material rub resistance and impact resistance difference is not enough to improve the problem that life-span of alloy product has just become those skilled in the art to solve.
The model utility content
At the prior art above shortcomings, the purpose of this utility model provides the speed changer pneumatic control system aluminum alloy material clutch release slave cylinder that a kind of wear resistance and impact resistance are greatly improved.
The technical solution of the utility model is achieved in that speed changer pneumatic control system clutch release slave cylinder, comprise cylinder body and cylinder cap, both closed cylinders that form, declutch shift shaft one end passes from cylinder body and enters cylinder and be connected with the cylinder inner carrier, be provided with seal ring between cylinder body and the declutch shift shaft, it is characterized in that: the rubbing surface of described piston and cylinder body is provided with guide ring, piston is that double-lipped circle and both ends of the surface are provided with the buffering endless belt, rubber layer covers outside piston, and cylinder body and cylinder cap are provided with the spacing endless belt corresponding with cushioning endless belt.
Further, the rubbing surface of described cylinder body and declutch shift shaft is provided with linear bearing, and linear bearing is located by Steel Cable Baffle Ring.
Described cylinder body is provided with the open type seal groove that is used for the declutch shift shaft sealing, seal ring between cylinder body and the declutch shift shaft is located in the seal groove, also be provided with plastics back-up ring and circlip for hole in seal groove, plastics back-up ring and circlip for hole are positioned at the seal ring outside successively.
The junction plane of described cylinder body and cylinder cap is provided with the rectangular seal pad, and the rectangular seal pad places in the rectangle annular groove of cylinder cap.
The utility model is by being provided with guide ring, piston assembly is located, simultaneously between cylinder body and declutch shift shaft, design linear bearing, born the lateral force (moment of torsion) of coming to shift fork, avoided contacting and the cylinder body that weares and teares of steel pistons and declutch shift shaft and aluminium alloy cylinder internal surface of hole, thereby the raising wear resistance improves working life thus.Spacing endless belt cooperates with piston assembly, and the cooperating of the spacing endless belt on rubber buffering ring and cylinder body, the cylinder cap, and can reach the purpose that alleviates shifting shock.The seal groove structure of open architecture has improved casting qualified rate, has reduced processing and assembling difficulty.
In a word, the utility model has improved the wear resistance and the impact resistance of aluminium alloy cylinder and cylinder cap, has improved the foundry goods sealing reliability simultaneously, has reduced processing and assembling difficulty.
Description of drawings
Fig. 1-prior art structural representation;
Fig. 2-the utility model structural representation.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 2, from the figure as can be seen, speed changer pneumatic control system clutch release slave cylinder of the present utility model, comprise cylinder body 1 and cylinder cap 5, cylinder cap 5 is provided with plug screw 6, and 6 of cylinder cap 5 and plug screws are provided with packing ring 7, and cylinder body 1 and cylinder cap 5 are fixedly connected to form closed cylinder 19 by bolt 10.The junction plane of described cylinder body 1 and cylinder cap 5 is provided with rectangular seal pad 4, and rectangular seal pad 4 places in the rectangle annular groove of cylinder cap.Declutch shift shaft 16 1 ends are threaded and pass from cylinder body 1 and enter cylinder 19, and cylinder inner carrier 2 is placed on the declutch shift shaft 16 fixedly connected by nut 8.Piston 2 is divided into left and right sides two-part sealed to each other with cylinder 19, for guaranteeing two-part sealing effect, is provided with O-ring seals 9 between piston 2 and declutch shift shaft 16.When to different cylinder interacvity air-fillings, after air pressure acquires a certain degree, will promote piston 2 and then promote declutch shift shaft 16 to move (gas in another chamber of cylinder body is drained simultaneously).On piston 2, have annular groove, be provided with guide ring 3 in the annular groove, contact with cylinder body 1 inwall by guide ring 3, realize thus piston assembly location and carrying, vulcanized rubber can effectively avoid steel pistons 2 to scratch cylinder body 1 with aluminium alloy cylinder 1 contacting of internal surface of hole on piston 2 cylindricals simultaneously, thereby causes seal failure to reduce working life.For improving the durability of guide ring 3, guide ring 3 adopts the polytetrafluoroethylmaterial material of modification.
In order to reduce shifting shock, the both ends of the surface of piston 2 are provided with rubber buffering endless belt 17, and buffering endless belt 17 is a little more than piston 2 end faces, are provided with the spacing endless belt 18 corresponding with cushioning endless belt 17 simultaneously on cylinder body 1 and cylinder cap 5.When gear shift, buffering endless belt 17 at first contacts with spacing endless belt 18, because the buffering endless belt is a rubber, thereby reaches the purpose that alleviates impact.When buffering endless belt 17 compressive deformations were lower than piston 2 end faces, piston 2 end faces just contacted with spacing endless belt 18.
The aluminum alloy material wear resistance is not enough, must reduce the working life of assembly, and for addressing this problem, linear bearing 14 of design on the rubbing surface between cylinder body 1 and the declutch shift shaft 16, linear bearing 14 pass through Steel Cable Baffle Ring 15 location.Linear bearing adopts the pattern that applies the polytetrafluoroethylmaterial material of modification on steel backing, the life-span of utilizing the high wear resistance of the teflon of modification to improve assembly.
Described cylinder body 1 is provided with the open type seal groove that is used for declutch shift shaft 16 sealings, seal ring 13 between cylinder body 1 and the declutch shift shaft 16 is located in the seal groove, also be provided with plastics back-up ring 12 and circlip for hole 11 in seal groove, plastics back-up ring 12 and circlip for hole 11 are positioned at seal ring 13 outsides successively.The seal groove structure of open architecture has not only improved casting qualified rate, has reduced processing and assembling difficulty simultaneously.
The structural design of the utility model cylinder body, cylinder cap has the good casting technique performance that satisfies, and the requirement of intensity has been satisfied in the design of rib.And the design of piston assembly double-lipped ring structure has reduced the accurate to dimension of counterpart, reduces the surface friction drag of piston.Rubber layer all covers the matrix outside piston, has avoided steel pistons to contact with the direct of aluminium alloy cylinder, thereby has avoided piston to scratch inner surface of cylinder block, improves cylinder body working life thus.
Claims (4)
1, speed changer pneumatic control system clutch release slave cylinder, comprise cylinder body (1) and cylinder cap (5), both closed cylinders (19) that form, declutch shift shaft (16) one ends pass from cylinder body (1) and enter cylinder (19) and be connected with cylinder inner carrier (2), be provided with seal ring (13) between cylinder body (1) and the declutch shift shaft (16), it is characterized in that: described piston (2) is provided with guide ring (3) with the rubbing surface of cylinder body, piston (2) is that double-lipped circle and both ends of the surface are provided with buffering endless belt (17), rubber layer covers outside piston, and cylinder body (1) and cylinder cap (5) are provided with the spacing endless belt (18) corresponding with cushioning endless belt.
2, speed changer pneumatic control system clutch release slave cylinder according to claim 1 is characterized in that: described cylinder body (1) is provided with linear bearing (14) with the rubbing surface of declutch shift shaft, and linear bearing (14) is by Steel Cable Baffle Ring (15) location.
3, speed changer pneumatic control system clutch release slave cylinder according to claim 1 and 2, it is characterized in that: described cylinder body (1) is provided with the open type seal groove that is used for the declutch shift shaft sealing, seal ring (13) between cylinder body (1) and the declutch shift shaft is located in the seal groove, also be provided with plastics back-up ring (12) and circlip for hole (11) in seal groove, plastics back-up ring (12) and circlip for hole (11) are positioned at seal ring (13) outside successively.
4, speed changer pneumatic control system clutch release slave cylinder according to claim 3 is characterized in that: the junction plane of described cylinder body (1) and cylinder cap (5) is provided with rectangular seal pad (4), and rectangular seal pad (4) places in the rectangle annular groove of cylinder cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200976574U CN201159216Y (en) | 2008-02-15 | 2008-02-15 | Working cylinder of speed changer air control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200976574U CN201159216Y (en) | 2008-02-15 | 2008-02-15 | Working cylinder of speed changer air control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159216Y true CN201159216Y (en) | 2008-12-03 |
Family
ID=40109800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200976574U Expired - Fee Related CN201159216Y (en) | 2008-02-15 | 2008-02-15 | Working cylinder of speed changer air control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159216Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418785A (en) * | 2011-09-16 | 2012-04-18 | 瑞立集团瑞安汽车零部件有限公司 | Auxiliary speed changing box gear shift cylinder, speed changing box gear shift device and cargo truck |
| CN102506164A (en) * | 2011-10-13 | 2012-06-20 | 陕西航空电气有限责任公司 | Cylinder-secondary tank assembly for heavy gear truck |
| CN102865361A (en) * | 2012-09-27 | 2013-01-09 | 陕西法士特齿轮有限责任公司 | Front auxiliary box cylinder of automobile transmission |
| WO2014048147A1 (en) * | 2012-09-27 | 2014-04-03 | 陕西法士特齿轮有限责任公司 | Front auxiliary box cylinder of automobile transmission |
-
2008
- 2008-02-15 CN CNU2008200976574U patent/CN201159216Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418785A (en) * | 2011-09-16 | 2012-04-18 | 瑞立集团瑞安汽车零部件有限公司 | Auxiliary speed changing box gear shift cylinder, speed changing box gear shift device and cargo truck |
| CN102506164A (en) * | 2011-10-13 | 2012-06-20 | 陕西航空电气有限责任公司 | Cylinder-secondary tank assembly for heavy gear truck |
| CN102865361A (en) * | 2012-09-27 | 2013-01-09 | 陕西法士特齿轮有限责任公司 | Front auxiliary box cylinder of automobile transmission |
| WO2014048147A1 (en) * | 2012-09-27 | 2014-04-03 | 陕西法士特齿轮有限责任公司 | Front auxiliary box cylinder of automobile transmission |
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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: KNORR-BREMSE CAFF SYSTEMS FOR COMMERCIAL VEHICLES Free format text: FORMER OWNER: KAFU AUTOMOBILE BRAKING STEERING SYSTEMS CO., LTD. CHONGQING Effective date: 20110512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 401122 NO. 10, CHANGFU WEST ROAD, JINKAI AVENUE, YUBEI DISTRICT, CHONGQING CITY TO: 401123 BUILDING 11, NO. 10, CHANGFU WEST ROAD, JINGKAI PARK, BEIBU NEW DISTRICT, CHONGQING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110512 Address after: 401123 Chongqing new North Zone by opening Chang Fu Road No. 10 building 11 Patentee after: Cafu Connor, commercial vehicle systems (Chongqing) Co., Ltd. Address before: 401122, No. 10 Fu Xi Road, Jin Kai Road, Chongqing, Yubei District Patentee before: Chongqing Caff Automotive Braking & Steering Systems Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20160215 |