CN204961736U - Stepless speed changer - Google Patents
Stepless speed changer Download PDFInfo
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- CN204961736U CN204961736U CN201520723954.5U CN201520723954U CN204961736U CN 204961736 U CN204961736 U CN 204961736U CN 201520723954 U CN201520723954 U CN 201520723954U CN 204961736 U CN204961736 U CN 204961736U
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- pulley
- taper cone
- pulley assembly
- cone pulley
- small gear
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 229910000754 Wrought iron Inorganic materials 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 235000000396 iron Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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Abstract
The utility model relates to a stepless speed changer, including a loose pulley assembly, the 2nd loose pulley assembly and steel band, a loose pulley assembly and the 2nd loose pulley assembly's structure is identical, a loose pulley assembly includes first cone pulley, second toper wheel and center pin, and first cone pulley and second toper wheel all set up on the center pin, and first cone pulley is adjustable with the distance between the second toper wheel, and a plurality of recess has all been left to the conical surface that the conical surface and the second toper of first cone pulley were taken turns, every to between the recess of one -to -one all sliding connection have the rod iron, all be provided with two pinions on every rod iron, the internal surface of steel band is equipped with the tooth with pinion looks adaptation, and a loose pulley assembly and the 2nd loose pulley assembly pass through the transmission on the pinion of steel band cover. The utility model discloses infinitely variable can be realized, and the structure of pinion still can be protected.
Description
Technical field
The utility model relates to a kind of speed changer, is a kind of stepless speed variator in more detail.
Background technique
CVT (ContinuouslyVariableTransmission) refers to a kind of automotive transmission, is also stepless speed variator, so far existing more than 100 year history.Its structure comprises the left and right two halves of relative motion, can relatively close or separation.Tapered dish can tighten up or open under the thrust of hydraulic pressure, and extruding steel disc chain regulates the width of V-type groove with this.When tighten up to the inside by movement for tapered dish, steel disc chain to direction (centrifugal direction) motion beyond the center of circle, can move on the contrary under the extruding of cone dish within the center of circle.Like this, the disk diameter of steel disc chain-driving increases, and velocity ratio also just there occurs change.
But CVT also also exists intrinsic shortcoming, as the pressure between driving belt and ratchet is very large, and frictional force is correspondingly also very large, will increase the loss of power like this; For another example, when frictional force during fierce driving between driving belt and ratchet is not enough to the power provided needed for acceleration, just there will be the phenomenon of skidding, power transmission loss is very huge.The reason of above defect is caused to be by analysis: driving belt is that the frictional force by clamping with ratchet realizes transmission, the size of frictional force is relevant with material, shaggy material friction coefficient is large, and frictional force also can be large, but even if selects the appearance of any material also inevitable skidding.Inventor thinks that the effective ways solved the problems of the technologies described above are, adopt rigidly connected mode.
Model utility content
In order to solve the problems referred to above that prior art exists, the utility model provides a kind of stepless speed variator, the kind of drive of this stepless speed variator adopts rigidly connected steel band and several small gears, by changing the external diameter of driving cone pulley and driven taper cone pulley, realize the technique effect of electrodeless variable-speed continuously.
The technological scheme that the utility model adopts is:
A kind of stepless speed variator, the first pulley assembly, the second pulley assembly and steel band; First pulley assembly is identical with the structure of the second pulley assembly;
First pulley assembly comprises the first taper cone pulley, second taper cone pulley and central shaft, first taper cone pulley and the second taper cone pulley are all arranged on center shaft, the vertex of a cone of the first taper cone pulley and the vertex of a cone of the second taper cone pulley are arranged in opposite directions, and the vertex of a cone of the first taper cone pulley is adjustable to the distance of the vertex of a cone of the second taper cone pulley, the conical surface of the first taper cone pulley and the conical surface of the second taper cone pulley all have several grooves, and the groove one_to_one corresponding that the groove that the first taper cone pulley is arranged and the second taper cone pulley are arranged, the groove that first taper cone pulley is arranged is overlapping perpendicular to the projection in the plane of central shaft with the groove that the second taper cone pulley is arranged perpendicular to the projection in the plane of central shaft, often pair all slidably connects rod iron between groove one to one, each rod iron is provided with at least one small gear,
The internal surface of steel band is provided with the tooth suitable with small gear, and the first pulley assembly and the second pulley assembly are enclosed within small gear upper driving by steel band.
The setting direction of above-mentioned groove is by the other end of one end of the conical surface to the conical surface, and is straight line extension, and the elongation line of all grooves intersects at the axle center place of central shaft; The two ends of above-mentioned rod iron are slidably connected in the groove of the first taper cone pulley and the groove of the second taper cone pulley respectively; The groove that first taper cone pulley is arranged and the groove that the second taper cone pulley is arranged are a pair one to one at two grooves overlapped perpendicular to the projection in the plane of central shaft.
Preferred technological scheme is, the quantity of rod iron is for being 16.
Preferred technological scheme is, small gear is ratchet, and the small gear that the first pulley assembly is installed is contrary with the small gear installation direction that the second pulley assembly is installed.
The utility model passes through the distance between the first upper taper cone pulley of change first pulley assembly and/or the second pulley assembly and the second taper cone pulley, can realize infinite variable speed technique effect; The utility model can not be skidded by steel band positive drive, not easily slip teeth, and transmission efficiency is high, and structure is simple, good reliability; The structure of small gear is replaced by ratchet, thus the internal tooth of available protecting small gear and external tooth, bring better transmission effect; Cost is low, and effect is better than current gearbox on the market.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the state that drives up of the present utility model;
Fig. 2 is the schematic diagram of flat fast drive state of the present utility model;
Fig. 3 is the schematic diagram of gearing down state of the present utility model;
Fig. 4 is the structural representation of the first pulley assembly and the second pulley assembly;
Fig. 5 is the structural representation of steel band;
Fig. 6 is a kind of structural representation of small gear.
In figure: 1, the first pulley assembly; 2, the second pulley assembly; 3, steel band; 4, ratchet; 101, the first taper cone pulley; 102, the second taper cone pulley; 103, central shaft; 104, groove; 105, rod iron; 106, small gear.
Embodiment
For making the object of the utility model embodiment, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.The element described in an accompanying drawing of the present utility model or a kind of mode of execution and feature can combine with the element shown in one or more other accompanying drawing or mode of execution and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of parts that have nothing to do with the utility model, known to persons of ordinary skill in the art and process in illustrating.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, belongs to the scope of the utility model protection.
In the following embodiment of the utility model, the sequence number of embodiment and/or sequencing are only convenient to describe, and do not represent the quality of embodiment.The description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
As shown in Figure 1, Figure 4 and Figure 5, the utility model provides a kind of stepless speed variator, comprises the first pulley assembly 1, second pulley assembly 2 and steel band 3; First pulley assembly 1 is identical with the structure of the second pulley assembly 2; First pulley assembly 1 comprises the first taper cone pulley 101, second taper cone pulley 102 and central shaft 103, first taper cone pulley 101 and the second taper cone pulley 102 are all arranged on central shaft 103, the vertex of a cone of the first taper cone pulley 101 and the vertex of a cone of the second taper cone pulley 102 are arranged in opposite directions, and the vertex of a cone of the first taper cone pulley 101 is adjustable to the distance of the vertex of a cone of the second taper cone pulley 102, the distance adjustment namely by regulating the first taper cone pulley 101 or the second position of taper cone pulley 102 on central shaft 103 to realize the vertex of a cone; The conical surface of the first taper cone pulley 101 and the conical surface of the second taper cone pulley 102 all have several grooves 104, and on the first taper cone pulley 101 arrange groove 104 and the second taper cone pulley 102 on arrange groove 104 one_to_one corresponding, on the first taper cone pulley 101 arrange the projection of groove 104 in the plane perpendicular to central shaft 103 overlap with the projection of groove 104 in the plane perpendicular to central shaft 103 that the second taper cone pulley 102 is arranged; Often pair all slidably connects rod iron 105 between groove 104 (two grooves 104 that projection overlaps mutually) one to one, each rod iron 105 is provided with two small gears 106; The internal surface of steel band 3 is provided with the tooth suitable with small gear 106, and the first pulley assembly 1 and the second pulley assembly 2 are enclosed within small gear 106 upper driving by steel band 3.
By regulating the vertex of a cone of the first taper cone pulley 101 to the distance of the vertex of a cone of the second taper cone pulley 102, realize the velocity ratio between change first pulley assembly 1 and the second pulley assembly 2, when the first taper cone pulley 101 the vertex of a cone to the vertex of a cone of the second taper cone pulley 102 distance strengthen time, rod iron 105 slides to central shaft 103, and effective radius of gyration reduces; As the distance decreases, rod iron 105 deviates from central shaft 103 and slides, and effective radius of gyration strengthens; Suppose that the first pulley assembly 1 is power end, the second pulley assembly 2 is driven end, then shown in Fig. 1 is acceleration mode; Shown in Fig. 2 is flat speed (speed does not change) state; Shown in Fig. 3 is deceleration regime;
In order to bring better transmission effect, the quantity preferably arranging rod iron 105 is 16, because the angular interval between 16 rod irons 105 is 22.5 degree, ensure in the transmission process of steel band 3, eight rod irons 105 are had at least to be in stress, namely 16 small gears engage with steel band 3, uniform force, structural stability.
When changing effective radius of gyration, in order to protect small gear, the small gear 106 preferably connected on rod iron 105 is ratchet 4, the structure of ratchet 4 as shown in Figure 6, rod iron 105 is fixedly connected with internal tooth 401, suppose that the first pulley assembly 1 is power end, second pulley assembly 2 is driven end, the internal tooth 401 being then arranged on the small gear 106 on the first pulley assembly 1 contacts with external tooth 402 under the drive of rod iron 105, and drive external tooth 402 to rotate together, thus drive steel band 3 to rotate, steel band 3 drives the external tooth 402 of the small gear 106 be arranged on the second pulley assembly 2 to rotate, external tooth 402 drives internal tooth 401, because internal tooth 401 is fixedly connected with rod iron 105, thus achieve the first pulley assembly 1 drives the second pulley assembly 2 rotation technique effect by steel band 3.
It should be noted that, the installation direction of the small gear 106 on the second pulley assembly 2 is contrary with small gear 106 installation direction on the first pulley assembly 1 (namely when being installed to the small gear on the second pulley assembly 2, need to turn down one side thus realize external tooth and drive internal tooth), namely the small gear 106 on the second pulley assembly 2 is that external tooth 402 drives internal tooth 401, so ratchet 4 is turned over attachment face when installing, external tooth 402 can be realized and drive internal tooth 401 to rotate.
Certainly; when the first pulley assembly 1 is power end; because effective radius of gyration becomes large; arc length between adjacent rod iron 105 becomes large; thus small gear 106 pairs of steel bands 3 that the rod iron 105 of motion the initial segment drives apply power; and the small gear 106 on other rod irons 105 contacted in moving direction and with steel band 3 is in motionless or postpones compared with the small gear action on the rod iron 105 of the initial segment; now being equivalent to steel band 3 drives external tooth 402 to exceed the speed limit in internal tooth; now under the effect of ratchet 4; available protecting internal tooth 401 and external tooth 402, protection drive mechanism.
The utility model passes through the distance between the first upper taper cone pulley 101 of change first pulley assembly 1 and/or the second pulley assembly 2 and the second taper cone pulley 102, can realize infinite variable speed technique effect.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technological scheme, all drops within protection domain of the present utility model.
Claims (3)
1. a stepless speed variator, is characterized in that, comprises the first pulley assembly, the second pulley assembly and steel band; First pulley assembly is identical with the structure of the second pulley assembly;
First pulley assembly comprises the first taper cone pulley, second taper cone pulley and central shaft, first taper cone pulley and the second taper cone pulley are all arranged on center shaft, the vertex of a cone of the first taper cone pulley and the vertex of a cone of the second taper cone pulley are arranged in opposite directions, and the vertex of a cone of the first taper cone pulley is adjustable to the distance of the vertex of a cone of the second taper cone pulley, the conical surface of the first taper cone pulley and the conical surface of the second taper cone pulley all have several grooves, and the groove one_to_one corresponding that the groove that the first taper cone pulley is arranged and the second taper cone pulley are arranged, the groove that first taper cone pulley is arranged is overlapping perpendicular to the projection in the plane of central shaft with the groove that the second taper cone pulley is arranged perpendicular to the projection in the plane of central shaft, often pair all slidably connects rod iron between groove one to one, each rod iron is provided with at least one small gear,
The internal surface of steel band is provided with the tooth suitable with small gear, and the first pulley assembly and the second pulley assembly are enclosed within small gear upper driving by steel band.
2. stepless speed variator according to claim 1, is characterized in that, the quantity of rod iron is for being 16.
3. stepless speed variator according to claim 1, is characterized in that, small gear is ratchet, and the small gear that the first pulley assembly is installed is contrary with the small gear installation direction that the second pulley assembly is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723954.5U CN204961736U (en) | 2015-09-16 | 2015-09-16 | Stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723954.5U CN204961736U (en) | 2015-09-16 | 2015-09-16 | Stepless speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204961736U true CN204961736U (en) | 2016-01-13 |
Family
ID=55056805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520723954.5U Expired - Fee Related CN204961736U (en) | 2015-09-16 | 2015-09-16 | Stepless speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204961736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006177A (en) * | 2017-12-05 | 2018-05-08 | 陈学琴 | Planetary gear tracks engagement stepless speed changer |
| CN109372962A (en) * | 2018-12-17 | 2019-02-22 | 刘天军 | There is a grade CVT automatic gear-box |
-
2015
- 2015-09-16 CN CN201520723954.5U patent/CN204961736U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006177A (en) * | 2017-12-05 | 2018-05-08 | 陈学琴 | Planetary gear tracks engagement stepless speed changer |
| CN109372962A (en) * | 2018-12-17 | 2019-02-22 | 刘天军 | There is a grade CVT automatic gear-box |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |