CN100425872C - Roller-type step-less speed variator containing shear-like lever plate - Google Patents
Roller-type step-less speed variator containing shear-like lever plate Download PDFInfo
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- CN100425872C CN100425872C CNB2006100305096A CN200610030509A CN100425872C CN 100425872 C CN100425872 C CN 100425872C CN B2006100305096 A CNB2006100305096 A CN B2006100305096A CN 200610030509 A CN200610030509 A CN 200610030509A CN 100425872 C CN100425872 C CN 100425872C
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- chain
- screw mandrel
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Abstract
This invention relates to a chain stepless gear, in which, the input shaft and the output shaft are mounted parallel to a tensional chain screw mandrel, two opposite chain wheel faces form a wedge notch to clamp the chain as a drive chain characterizing that a speed lever is a single lever and long and short scissor-like lever plates, in which, the pivots of which are a same one mounted on the tensional chain screw mandrel and the speed screw mandrel, the active points of the lever plates are installed on two pressure rings, one is sleeved on the chain wheel handle, the other is covered on the pressure cam sleeved on the shaft, two V-shape notches are opened between the cam end face and the end face of the chain wheel handle filled with steel balls, the single lever takes the tensional screw mandrel as the pivot connected with the chain wheels mounted on the shafts, the right and left ends of the speed screw mandrel are screw rods connecting the single lever and the speed screw mandrel.
Description
(1) technical field
The present invention relates to stepless speed variator, relate in particular to chain-type continuously variable transmission.
(2) background technique
Chain-type continuously variable transmission can be divided into slide plate chain, roller chain etc. by its chain structure form, its structure is basic identical, all be by the chain transmission speed change, chain-type continuously variable transmission is applicable to that process parameter is changeable, and rotating speed changes or coordinate the device of many machine run speed continuously.Existing chain-type continuously variable transmission, as slide plate chain chain-type continuously variable transmission is a kind of driving mechanism with flexible middleware and cone pulley, comprise that mainly two pairs can be made axially movable driving and driven sprocket wheel 35,32, input shaft 36, output shaft 43, governor lever 33, speed governing screw mandrel 39, a chain screw mandrel 41 are referring to Fig. 1.The parallel installation of input shaft with output shaft, between input, output shaft, a chain screw mandrel is housed, drive sprocket is contained on the input shaft, driven sprocket is contained on the output shaft, form the wedge shape clip slot between two relative chain wheel faces, clamping slide plate chain 37 as Transmitted chains, and input, output shaft and sprocket wheel change distance and power with long key connecting to transmit.Side at input shaft is equipped with speed governing screw mandrel 39, in input, two governor levers 33 are equipped with at an output shaft and a chain screw mandrel two ends, a governor lever is fulcrum with a chain screw mandrel and is contained in input, the sprocket wheel of two relative chain wheel faces on the output shaft links through increased pressure frame 31, another root governor lever is fulcrum with a chain screw mandrel and is contained in input, the sprocket wheel of two relative chain wheel faces on the output shaft links, two governor levers are installed in two ends into the speed governing screw mandrel 39 of screw rod through nut 38 respectively, rotate handwheel 40 during speed governing and drive 39 rotations of speed governing screw mandrel, make input shaft, chain wheel pair on the output shaft relatively moves, and promptly closes up and opens.Form monocline wedge groove between two sprocket wheels, chain 37 relies on to compress with the frictional force of sprocket wheel contact area in the chain wheel pair 32,35 of folding and comes transmitting movement and power, makes the output shaft speed change.But, pressurization device connects sprocket wheel 32,35 through increased pressure frame 31 because adopting at single governor lever 33 on one side, governor lever closes up and another side opens on one side when speed governing, chain wheel pair lost impacting force and impacting force moment of chain wheel pair and chain lost open moment this moment, and cause chain tension to descend, produce the rotating speed discontinuity of speed changer, produce chain when serious and skid chain wear.
(3) summary of the invention
The object of the present invention is to provide a kind of roller-type step-less speed variator that contains shear-like lever plate, this stepless speed variator chain and chain wheel pair impacting force are big, can improve transmitted power, and can reduce the wearing and tearing between chain sprocket, prolong the working life of chain and sprocket wheel.
The present invention is achieved in that a kind of roller-type step-less speed variator that contains shear-like lever plate, mainly comprise input, output shaft, governor lever, speed governing screw mandrel, a chain screw mandrel, can make axially movable driving and driven sprocket wheel for two pairs, the parallel installation with output shaft of input shaft is equipped with a chain screw mandrel between input, output shaft, drive sprocket is contained on the input shaft, driven sprocket is contained on the output shaft, forms the wedge shape clip slot between two relative chain wheel faces, and clamping chain as Transmitted chains; Side at input shaft is equipped with the speed governing screw mandrel, it is characterized in that: governor lever is simple lever and length, short shear-like lever plate, long, the fulcrum of short shear-like lever plate is a same point, be installed in respectively on a chain screw mandrel and the speed governing screw mandrel, long, the moving point of short shear-like lever plate is installed in respectively on two press ring arranged side by side that are set on input shaft and the output shaft separately, a press ring in described two press ring arranged side by side is sleeved on the sprocket wheel shank, another press ring is sleeved on the welding cam, welding cam is sleeved on the axle, between welding cam end face and sprocket wheel shank end face, all have V-shaped groove, in two V-shaped grooves, steel ball is housed; Simple lever with to open the chain screw mandrel be fulcrum be contained in input shaft, output shaft on a sprocket wheel of two relative chain wheel faces link, two ends, the speed governing screw mandrel left and right sides are screw rod, simple lever is connected through nut with the speed governing screw mandrel.
Describedly on the speed governing screw mandrel equilibrium block is housed, equilibrium block connects long and short shear-like lever plate through bearing pin, and equilibrium block and speed governing screw mandrel are scyewed joint.
Input shaft and output shaft are the needle roller clutch with connecting of sprocket wheel and press ring.
The present invention adopts shear-like lever plate and pressurization device, in any speed governing position, required impacting force in the time of can both obtaining with reliable delivery power between chain and chain wheel pair, drawing torque produces the opposite axial force of a pair of direction on press ring at work, act on respectively on the driving and driven sprocket wheel by shear-like lever, exert pressure to chain,, prevent that chain from skidding to guarantee the need of transmitted power.The size of applied pressure is directly proportional with drawing torque simultaneously, can improve transmitted power, and can reduce the wearing and tearing between chain sprocket, prolongs the working life of chain and sprocket wheel.
(4) description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is existing slide plate chain chain-type continuously variable transmission structural representation;
Fig. 2 contains the schematic diagram of the roller-type step-less speed variator of shear-like lever plate for the present invention;
Fig. 3 contains the roller-type step-less speed variator structural representation of shear-like lever plate for the present invention;
Fig. 4 be among Fig. 3 A-A to cross-sectional schematic;
Fig. 5 be among Fig. 3 B-B to cross-sectional schematic.
Among the figure: 1,7 are loaded on the pair of sprocket on the output shaft, 2,6 are loaded on the pair of sprocket on the input shaft, 3 input shafts, 4 output shafts, 5 simple levers, 8,14 are loaded on the press ring of input shaft, 9,15 are loaded on the press ring of output shaft, 10 long pruning shape lever plates, 11 short shear-like lever plates, 12,13 welding cams, 16 equilibrium blocks, 17 speed governing screw mandrels, 18 roller chains, 19 chain screw mandrels, 20 steel balls, 31 increased pressure frames, 32 driven sprockets, 33 governor levers, 34 pressing plates, 35 drive sprockets, 36 input shafts, 37 slide plate chains, 38 speed governing nuts, 39 speed governing screw mandrels, 40 speed-regulating hand wheels, 41 chain screw mandrels, 42 chain nuts, 43 output shafts.
(5) embodiment
Referring to Fig. 3, Fig. 4, Fig. 5, a kind of roller-type step-less speed variator that contains shear-like lever plate, comprise that mainly two pairs can be made axially movable drive sprocket 2,6, driven sprocket 1,7, input shaft 3, output shaft 4, governor lever, speed governing screw mandrel 17, a chain screw mandrel 19.Input shaft 3 and output shaft 4 parallel installations, a chain screw mandrel 19 is housed between input shaft 3 and output shaft 4, drive sprocket 2,6 is contained on the input shaft 3, driven sprocket 1,7 is contained on the output shaft 4, form the wedge shape clip slot between two relative chain wheel faces 2,6 and 1,7, clamping chain 18 as Transmitted chains, and Transmitted chains is a roller chain 18.Side at input shaft 3 is equipped with speed governing screw mandrel 17.
Governor lever comprises simple lever 5 and long and short shear- like lever plate 10,11, the fulcrum of long and short shear- like lever plate 10,11 is a same point, be installed in respectively on the chain screw mandrel 19 and on speed governing screw mandrel 17, the moving point of long and short shear- like lever plate 10,11 is installed in respectively on the press ring arranged side by side 8,14 and 9,15 that is set on input shaft 3 and the output shaft 4.Be sleeved on sprocket wheel 6 shanks in 3, one press ring 8 of input shaft, may command sprocket wheel 6 moves axially on the one hand, pushes down bearing as bearing cap on the other hand; Another press ring 14 is sleeved on the welding cam 12, and links through plane bearing, and welding cam 12 is sleeved on the input shaft 3, all has V-shaped groove between welding cam 12 end faces and sprocket wheel 6 shank end faces, in these two V-shaped grooves steel ball 20 is housed; Steel ball 20 is evenly distributed between sprocket wheel 6 shank end faces and welding cam 12 end faces, plays the transferring power effect; Uniform as steel ball with 90 degree.In like manner, be sleeved on sprocket wheel 7 shanks in 4, one press ring 9 of output shaft, may command sprocket wheel 7 moves axially on the one hand, pushes down bearing as bearing cap on the other hand; Another press ring 15 is sleeved on the welding cam 13, and links through plane bearing, and welding cam 13 is sleeved on the output shaft 4, all has V-shaped groove between welding cam 13 end faces and sprocket wheel 7 shank end faces, in these two V-shaped grooves steel ball 20 is housed; Steel ball 20 is evenly distributed between sprocket wheel 7 shank end faces and welding cam 13 end faces, plays the transferring power effect; Uniform as steel ball with 90 degree.Here, two press ring, welding cam, steel ball, sprocket wheel shank end face V-shaped groove, welding cam end face V-shaped grooves have been formed pressurization device.Long and short shear- like lever plate 10,11 press ring by pressurization device are used for sprocket wheel with masterpiece, and the chain crop rotation is relatively moved.
Simple lever 5 with to open chain screw mandrel 19 be fulcrum be contained in input shaft 3 and output shaft 4 on the sprocket wheel 2,1 of two relative chain wheel faces link, two ends, speed governing screw mandrel 17 left and right sides are screw rod, simple lever 5 and speed governing screw mandrel 17 are connected through nut.Equilibrium block 16 is housed on speed governing screw mandrel 17, and equilibrium block 16 connects long and short shear- like lever plate 10,11 through bearing pin, and equilibrium block 16 is a scyewed joint with speed governing screw mandrel 17.
Rotate speed governing screw mandrel 7, the chain wheel pair 2,6 and 1,7 on input shaft 3 and the output shaft 4 is relatively moved, promptly close up and open.Form monocline wedge groove between two sprocket wheels, roller chain 18 relies on to compress with the frictional force of sprocket wheel contact area in the chain wheel pair of folding and comes transmitting movement and power, makes output shaft 4 speed changes.
The working principle that the present invention contains the roller-type step-less speed variator of shear-like lever plate is:
Referring to Fig. 2, be contained in pressurization device K1 on the input shaft 3 under the effect of torque M 1, produce the reverse power Q of a pair of equivalence
A1And Q
A1', its size depends on the size of torque M 1 and the clamping force of pressurization device.The pressurization device K2 that is contained on the output shaft 4 produces active force Q under the effect of output torque M 2
A2And Q
A2'; At this moment, the axial pressing force Q on output shaft 4 chain wheel faces
A4=Q
A2'+Q
A1=-Q
A5, wherein: Q
A1Be to transmit from the pressurization device K1 that is contained on the input shaft 3 by shear-like lever plate 11.Equally, the axial pressing force Q on the input shaft 3 chain wheel faces
A3=Q
A1'+Q
A2=-Q
A6, Q wherein
A2Be to transmit from the pressurization device K2 that is contained on the output shaft 4 by shear-like lever plate 10.
Axial pressing force Q on input shaft 3 sprocket wheels
A3Greater than the axial pressing force Q on output shaft 4 sprocket wheels
A4The difference part, pass to speed governing screw mandrel 17 via shear- like lever plate 10,11 and equilibrium block 16 and bear.Axial pressing force Q
A5And Q
A6Between difference then become remaining power on the speed governing screw mandrel 17, equivalent and oppositely with all power sums on the equilibrium block 16.
The present invention is big by the impacting force that shear-like lever acts on the driving and driven sprocket wheel, can improve transmitted power, and can reduce the wearing and tearing between chain sprocket, prolongs the working life of chain and sprocket wheel.
Claims (4)
1. roller-type step-less speed variator that contains shear-like lever plate, mainly comprise input, output shaft, governor lever, speed governing screw mandrel, a chain screw mandrel, can make axially movable driving and driven sprocket wheel for two pairs, the parallel installation with output shaft of input shaft is equipped with a chain screw mandrel between input, output shaft, drive sprocket is contained on the input shaft, driven sprocket is contained on the output shaft, forms the wedge shape clip slot between two relative chain wheel faces, and clamping chain as Transmitted chains; Side at input shaft is equipped with the speed governing screw mandrel, it is characterized in that: governor lever is simple lever and length, short shear-like lever plate, long, the fulcrum of short shear-like lever plate is a same point, be installed in respectively on a chain screw mandrel and the speed governing screw mandrel, long, the moving point of short shear-like lever plate is installed in respectively on two press ring arranged side by side that are set on input shaft and the output shaft separately, a press ring in described two press ring arranged side by side is sleeved on the sprocket wheel shank, another press ring is sleeved on the welding cam, welding cam is sleeved on the axle, between welding cam end face and sprocket wheel shank end face, all have V-shaped groove, in two V-shaped grooves, steel ball is housed; Simple lever with to open the chain screw mandrel be fulcrum be contained in input shaft, output shaft on a sprocket wheel of two relative chain wheel faces link, two ends, the speed governing screw mandrel left and right sides are screw rod, simple lever is connected through nut with the speed governing screw mandrel.
2. the roller-type step-less speed variator that contains shear-like lever plate according to claim 1 is characterized in that: on the speed governing screw mandrel equilibrium block is housed, equilibrium block connects long and short shear-like lever plate through bearing pin, and equilibrium block and speed governing screw mandrel are scyewed joint.
3. the roller-type step-less speed variator that contains shear-like lever plate according to claim 1 is characterized in that: input shaft and output shaft are the needle roller clutch with connecting of sprocket wheel and welding cam.
4. the roller-type step-less speed variator that contains shear-like lever plate according to claim 1 is characterized in that: Transmitted chains is a roller chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100305096A CN100425872C (en) | 2006-08-28 | 2006-08-28 | Roller-type step-less speed variator containing shear-like lever plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100305096A CN100425872C (en) | 2006-08-28 | 2006-08-28 | Roller-type step-less speed variator containing shear-like lever plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1936365A CN1936365A (en) | 2007-03-28 |
| CN100425872C true CN100425872C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100305096A Expired - Fee Related CN100425872C (en) | 2006-08-28 | 2006-08-28 | Roller-type step-less speed variator containing shear-like lever plate |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307237B (en) * | 2013-06-17 | 2015-10-14 | 徐宇 | Flexible engagement infinitely variable transmission |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034421A (en) * | 1978-11-16 | 1980-06-04 | Cam Gears Ltd | Expanding-pulley gearing |
| CN2175850Y (en) * | 1993-11-09 | 1994-08-31 | 杨中宜 | Stepless speed variator for wedge chain machine |
| DE102004051474A1 (en) * | 2003-11-05 | 2005-06-02 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Process for reducing the airborne and/or structure-borne noise caused by a CVT chain gear that is audible especially in a vehicle comprises superimposing vibrations on the vibrations caused by the CVT chain gear |
| JP2005291235A (en) * | 2004-03-31 | 2005-10-20 | Koyo Seiko Co Ltd | Chain type continuously variable transmission |
| CN200952553Y (en) * | 2006-08-28 | 2007-09-26 | 上海中纺机通用机械有限公司 | Roller stepless speed variator containing shear type lever plate |
-
2006
- 2006-08-28 CN CNB2006100305096A patent/CN100425872C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034421A (en) * | 1978-11-16 | 1980-06-04 | Cam Gears Ltd | Expanding-pulley gearing |
| CN2175850Y (en) * | 1993-11-09 | 1994-08-31 | 杨中宜 | Stepless speed variator for wedge chain machine |
| DE102004051474A1 (en) * | 2003-11-05 | 2005-06-02 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Process for reducing the airborne and/or structure-borne noise caused by a CVT chain gear that is audible especially in a vehicle comprises superimposing vibrations on the vibrations caused by the CVT chain gear |
| JP2005291235A (en) * | 2004-03-31 | 2005-10-20 | Koyo Seiko Co Ltd | Chain type continuously variable transmission |
| CN200952553Y (en) * | 2006-08-28 | 2007-09-26 | 上海中纺机通用机械有限公司 | Roller stepless speed variator containing shear type lever plate |
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| Publication number | Publication date |
|---|---|
| CN1936365A (en) | 2007-03-28 |
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Granted publication date: 20081015 Termination date: 20120828 |