CN2526596Y - Mechanical friction type stepless speed change device - Google Patents
Mechanical friction type stepless speed change device Download PDFInfo
- Publication number
- CN2526596Y CN2526596Y CN 02210478 CN02210478U CN2526596Y CN 2526596 Y CN2526596 Y CN 2526596Y CN 02210478 CN02210478 CN 02210478 CN 02210478 U CN02210478 U CN 02210478U CN 2526596 Y CN2526596 Y CN 2526596Y
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- Prior art keywords
- gear
- input shaft
- dish
- nut
- friction
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- Expired - Lifetime
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- 230000008859 change Effects 0.000 title claims description 11
- 239000002131 composite material Substances 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000006247 magnetic powder Substances 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000021615 conjugation Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a mechanical friction-typed stepless shift device, which is a shift structure formed by combining a mechanical pressurizing and a speed-regulating mechanism by a press disc, a pressurizing spring and a composite generatrix friction pair. The composite generatrix friction pair is connected by the flexible enclosed-ring friction contact between a fixed conical disc and a movable conical disc which are coaxial with both conical surfaces facing to each other by a friction piece or a pin; wherein, the conical surfaces of the fixed conical disc and the movable conical disc are two-section composite of a beeline and a curve; a beeline section is close to the axis line of the conical disc; the working generatrixes of the friction piece or the pin are the conjugated composite generatrix; the mechanical pressurizing and the speed-regulating mechanism are a bidirectional three-position clutch with two sides symmetrically provided with a planetary wheel system; a gear nut is an integrated structure with the nut fixedly connected with a gear of the external edge, which is coaxial with an input shaft and is matched with a guide screw on the input shaft; the gear is transmitted by the planetary wheel system; a pulling rod is arranged between the nut and the gear to pass through the press disc and is connected with the movable conical disc. The whole machine of the utility model has the advantages of high efficiency, high reliability, low cost and long service life.
Description
Technical field
The utility model relates to stepless variable transmission technique, is specially a kind of mechanical friction type stepless speed change device with middle flexible element such as band and chain.
Background technique
Stepless speed variator is the continuously adjustable mechanical transmission of a kind of velocity ratio, owing to can adapt to the changeable or rotating speed continually varying requirement of operating mode in the machine operation procedure, not only be widely used in light industrial segments such as weaving, food, papermaking, rubber, and be used for all kinds of machinery such as machine tool (lathe), overweight transportation, petrochemical industry, its successful Application on automobile variable speed in the last few years particularly.
Automobile comprises oil pump, forward-reverse switching mechanism, input shaft, driving wheel (awl dish), metal tape (chain), follower (awl dish) with the fundamental composition of mechanical friction type stepless speed change device, output shaft, main reducing gear, box of tricks and ransaxle etc., its working procedure is: during automobile normal running, clutch is imported power into, driving wheel drives follower by band or chain, and then power given wheel through distribution such as main reducing gear, differential mechanisms, realizing advances travels; Effect has push action cylinder on the awl dish of driven wheel, accelerator pedal position according to road running resistance and driver's control waits the pressure of regulating oil cylinder, thereby change the Pitch radius of driven wheel awl dish, reach desired speed ratio, realize stepless change.Its awl dish bus is a kind of to be straight edge line, advantage is that area of contact is big, contact stress is low, surface of friction pair life-span height, shortcoming is the deflection that must occur band (chain) axis of symmetry and awl dish rotational axis in the speed-change process, influences the stable of transmission, in order to reduce deviation, gear ratio can not be big, generally only accomplishes R=5～6; Another kind is bent bus, the side that friction plate (or pin end) contacts with the awl dish is a fricting working surface, the bus of working surface is a curve (Chinese patent, the patent No. is 00212516.1), it bores tortuous bus and band (chain) side shape forms a pair of conjugate curve, and advantage is to have realized that band (chain) axis of symmetry is forever vertical with awl dish rotational axis in the speed-change process, and transmission is stable, shortcoming is that contact stress is big slightly, thereby influences the life-span.In addition, its pressurization and speed control system are except adhesive tape and silent chain, metal tape and swing pin chain type stepless speed variator adopt the hydraulic pressurization speed control system more, automobile is with almost all adopting hydraulic pressurization and speed control system in the stepless speed variator (CVT) at present, machine-liquid control system comprises driving wheel oil cylinder 31 as shown in Figure 1, belt wheel position transducer 32, Pitot tube 33, Transmission Ratio Control valve 34, closure control cam 35, flexible steel wire 36, closure 37, accelerator pedal 38, main pressure control valve 39, oil pump 40, thrust formula metal tape 41, follower oil cylinder 42 and belt wheel etc., electrohydraulic control system as shown in Figure 2, comprise initiatively cone pulley 51, safety valve 52, speed ratio valve 53, clamping force control valve 54, brake petal 55, closure 56, driven cone pulley 57 and electric controller etc., its technology is very ripe, but its shortcoming is conspicuous, support that promptly hydraulic work system needs oil pump, power loss is inevitable, the used pump of system, valve, oil cylinder piston, sealing (especially high speed rotary sealing) etc. makes system complex, not only part is many, require processing precise, turbidity test to oil also require very high, more much higher than general lubricant oil requirement, thereby reliability decrease.
The model utility content
The utility model provides the mechanical friction type stepless speed change device that a kind of overall efficiency height, reliability height, cost are low, the life-span is long.
The technical solution of the utility model is that the machinery pressurization is passed through platen with speed regulating mechanism, the speed changing structure that pressing spring combines to the composite bus friction pair, described composite bus friction pair is coaxial with the mantle dish for deciding the awl dish, the conical surface is relative, the flexible closed loop rubbing contact of forming by friction plate between the two connects, describedly decide the awl dish and be installed in input shaft, with input shaft rotate and along input shaft in axial sliding mantle dish opposite side be fixed with pressing spring successively, platen, wherein decide the awl dish, the conical line of mantle dish is that straight line and curve are composited for two sections, straightway is near the awl disk axis, and described friction plate working bus bar and awl dish bus are the composite bus of conjugation; Described machinery pressurization is that two-way three clutch bilateral symmetry are provided with planetary gear train with speed regulating mechanism, wherein a skidding star wheel series is made up of planet wheel Z2, Z2 ' (duplicate gear) and planet carrier, sun gear Z1 and Z3, and the opposite side planetary gear train is made up of planet wheel Z4, Z4 ' (duplicate gear) and tie-rod, sun gear Z5 and Z6; Gear nut is the affixed integrative-structure of gear of nut and its outer rim, and is coaxial with input shaft and match with leading screw on it, is in transmission connection by gear and planet wheel Z2 ', Z4 ', establishes pull bar between nut and gear and passes platen and link to each other with the mantle dish.
Described friction plate can replace with pin; Described pressing spring is a disk spring; Described two-way three clutches adopt magnetic powder clutch, magnetic clutch or armstrong's patent clutch.
The beneficial effects of the utility model are:
1. reduce contact stress, improve the life-span.The utility model awl dish bus is composited for two sections by straight line and curve, both guaranteed that band (chain) kept vertical forever with awl dish rotational axis in speed-change process, (turning radius is little when making band (chain) with awl dish contact area close awl disk axis again, contact arc length is little and pressure is big) bigger surface of contact arranged, thereby the reduction contact stress improves the life-span.
2. overall efficiency height, reliability height, cost are low.The utility model adopts disk spring pressurization, machinery control speed governing (or electric mechanical control speed governing), spring is pressed to the mantle dish and is decided the awl dish, clamp friction plate (or pin), the power of input shaft is passed to by the mantle dish, avoided the high price of oil pump energy loss, high-precision hydraulic valve and the control system of common at present hydraulic pressure of using and control, thereby improve overall efficiency, reliability, reduce cost.In addition, the utility model adopts magnetic powder clutch, magnetic clutch or armstrong's patent clutch to replace hydraulic pressure multi-disc wet clutch commonly used, avoids adopting power consumption and complicated hydraulic system equally, raises the efficiency with reliability, reduces cost.
3. applied range.The utility model not only can be widely used in light industrial segments such as weaving, food, papermaking, rubber, and be used for all kinds of machinery such as machine tool (lathe), lifting transportation, petrochemical industry, particularly make and realize that the complete machine electronic control is very convenient, especially be convenient on the Vehicle Electronic Control stepless speed variator, use.
Description of drawings
Fig. 1 is machine in the prior art-liquid control system structural representation.
Fig. 2 is an electrohydraulic control system structural representation in the prior art.
Fig. 3 is the utility model structural representation.
Fig. 4 is awl dish and a friction plate working surface composite bus schematic representation among Fig. 3.
Embodiment
Be described in further detail the utility model below by embodiment and accompanying drawing.
Shown in Fig. 3～4, the utility model is that the machinery pressurization is passed through platen 15 with speed regulating mechanism 2, the infinitely variable speed structure that pressurization disk spring 14 combines to composite bus friction pair 1, described compound curve friction pair 1 is coaxial with mantle dish 13 for deciding awl dish 12, the conical surface is relative, the flexible closed loop rubbing contact of forming by friction plate 16 between the two connects, describedly decide awl dish 12 and be installed in input shaft 11, with input shaft 11 rotate and along input shaft in axial sliding the opposite side of mantle dish 13 be fixed with pressurization disk spring 14 successively, platen 15, wherein decide awl dish 12, the conical line of mantle dish 13 is that straight line and curve are composited for two sections, straightway is near the awl disk axis, described friction plate 16 working bus bars and awl dish bus are the composite bus of conjugation, as shown in Figure 4, AB on the awl dish and the ab on the friction plate are straight line, and BC on the awl dish and the bc on the friction plate are curve; Described machinery pressurization and speed regulating mechanism 2 are provided with planetary gear train for magnetic clutch 21 bilateral symmetry, wherein a skidding star wheel series is by planet wheel Z2 (23), Z2 ' (23 ') (duplicate gear) and planet carrier 24, sun gear Z1 (25) and Z3 (22) form, the opposite side planetary gear train is by planet wheel Z4 (29), Z4 ' (29 ') (duplicate gear) and tie-rod 28, sun gear Z5 (30) and Z6 (27) form, described planet wheel Z2 ' (23 '), Z4 ' (29 ') is in transmission connection with gear nut 26 respectively, gear nut 26 is the affixed integrative-structure of the gear 261 of nut 262 and outer rim, coaxial with input shaft 11, and match with leading screw 17 on it, uniform three pull bars 263 between nut 262 and the gear 261, passing platen 15 links to each other with mantle dish 13, described planet wheel is Z2 (23), Z2 ' (23 ') and Z4 (29), each three cover of Z4 ' (29 ') are uniformly distributed along the circumference with input shaft 11 axis.
Working procedure of the present utility model is:
When two-way three clutches 21 clamp sun gear 22 to the right, planetary gear train Z1 (25), Z2 (23), Z3 (22), Z2 ' (23 ') and gear nut 26 actions, the differential that nut 262 and input shaft 11 form makes with respect to the 17 rotation drive mantle dishes 13 of the leading screw on the input shaft 11 and moves right, and realizes accelerating motion.
When two-way three clutches 21 clamp sun gear 22 left, planetary gear train Z6 (27), Z4 (29), Z5 (30), Z4 ' (29 ') and gear nut 26 actions, the differential that nut 262 and input shaft 11 form makes with respect to the 17 rotation drive mantle dishes 13 of the leading screw on the input shaft 11 and is moved to the left, and realizes speed-down action.
When two-way three clutches 21 were positioned at the neutral position, two planetary gear train all were failure to actuate, and nut 262 is relative motionless with input shaft 11, and mantle dish 13 is motionless, keeps existing speed ratio.
In addition, can connect by the flexible closed loop rubbing contact that pin is formed between the utility model composite bus friction pair; Two-way three clutches 21 also can adopt magnetic powder clutch or armstrong's patent clutch.
Claims (4)
1. mechanical friction type stepless speed change device, it is characterized in that: for machinery pressurization and speed regulating mechanism (2) pass through platen (15), the speed changing structure that pressing spring (14) combines to composite bus friction pair (1), described compound curve friction pair (1) is coaxial with mantle dish (13) for deciding awl dish (12), the conical surface is relative, the flexible closed loop rubbing contact of forming by friction plate (16) between the two connects, describedly decide awl dish (12) and be installed in input shaft (11), with input shaft (11) rotate and along input shaft in axial sliding the opposite side of mantle dish (13) be fixed with pressing spring (14) successively, platen (15), wherein decide awl dish (12), the conical line of mantle dish (13) is that straight line and curve are composited for two sections, straightway is near the awl disk axis, and described friction plate (16) working bus bar and awl dish bus are the composite bus of conjugation; Described machinery pressurization is provided with planetary gear train with speed regulating mechanism (2) for two-way three clutches (21) bilateral symmetry, wherein a skidding star wheel series is made up of planet wheel Z2 (23), Z2 ' (23 ') and planet carrier (24), sun gear Z1 (25) and Z3 (22), wherein planet wheel Z2 (23), Z2 ' (23 ') are duplicate gear, the opposite side planetary gear train is made up of planet wheel Z4 (29), Z4 ' (29 ') and tie-rod (28), sun gear Z5 (30) and Z6 (27), and wherein planet wheel Z4 (29), Z4 ' (29 ') are duplicate gear; Gear nut (26) is the affixed integrative-structure of gear (261) of nut (262) and its outer rim, coaxial with input shaft (11) and match with leading screw (17) on it, be in transmission connection by gear (261) and planet wheel Z2 ' (23 '), Z4 ' (29 '), establish pull bar (263) between nut (262) and gear (261) and pass platen (15) and link to each other with mantle dish (13).
2. according to the described mechanical friction type stepless speed change device of claim 1, it is characterized in that: described friction plate (16) replaces with pin.
3. according to the described mechanical friction type stepless speed change device of claim 1, it is characterized in that: described pressing spring (14) is disk spring.
4. according to the described mechanical friction type stepless speed change device of claim 1, it is characterized in that: described two-way three clutches (21) adopt magnetic powder clutch, magnetic clutch or armstrong's patent clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02210478 CN2526596Y (en) | 2002-03-06 | 2002-03-06 | Mechanical friction type stepless speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02210478 CN2526596Y (en) | 2002-03-06 | 2002-03-06 | Mechanical friction type stepless speed change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526596Y true CN2526596Y (en) | 2002-12-18 |
Family
ID=33690612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02210478 Expired - Lifetime CN2526596Y (en) | 2002-03-06 | 2002-03-06 | Mechanical friction type stepless speed change device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526596Y (en) |
-
2002
- 2002-03-06 CN CN 02210478 patent/CN2526596Y/en not_active Expired - Lifetime
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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 |
Free format text: FORMER OWNER: CHENG YUE Effective date: 20050513 Owner name: YINTAI CHAOYUE CONTIUOUSLY VARIABLE TRANSMISSION Free format text: FORMER OWNER: CHENG NAISHI |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050513 Address after: 265500 Yongfu garden villa, Fushan hi tech Zone, Yantai Patentee after: Yantai Beyond Non-stage Transmission Co., Ltd. Address before: 110003 Liaoning Province, Shenyang City District West style 60431 Co-patentee before: Cheng Yue Patentee before: Cheng Naishi |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |