CN200993217Y - Connecting lever type stepless speep variator - Google Patents
Connecting lever type stepless speep variator Download PDFInfo
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- CN200993217Y CN200993217Y CN 200620167584 CN200620167584U CN200993217Y CN 200993217 Y CN200993217 Y CN 200993217Y CN 200620167584 CN200620167584 CN 200620167584 CN 200620167584 U CN200620167584 U CN 200620167584U CN 200993217 Y CN200993217 Y CN 200993217Y
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- lever
- cam
- type stepless
- stepless speed
- lever type
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Abstract
The utility model discloses a driving system that can realize a machinery type stepless speed changing. The driving system comprises an outer cover (17), an output shaft (1), an input shaft (14) and two sets of driving mechanisms, which both comprises cams that are arranged on the input shaft (14), and a pushing bar wheel that is matched with the cams. Wherein, the pushing bar wheel is arranged on a lever, the one end of which is connected with a single way overrunning clutch that is fixed on the output shaft (1). The one end of the lever which is close to the pushing bar wheel is provided with a truckle that is matched with a circular arc guiding groove (8). The other end of the lever is connected with a pulling spring (15) that enables the pushing bar wheel closely contact with the cams, and enables the truckle to closely contacts with the circular arc guiding groove (8). The pushing bar wheel and the truckle are fixed on the lever, and also can rotate at the opposite of the lever. The utility model has the advantages of simple structure, light weight, small area, very low cost and easy, convenient operation.
Description
Technical field
The utility model relates to a kind of transmission system of mechanical stepless speed-changing, belongs to field of mechanical technique.
Background technique
Stepless speed variator is a kind of general-purpose machinery, mainly is in order to obtain only operating rate, adjust its rotating speed arbitrarily in certain scope, being widely used in industry and agriculture field.At present mechanical continuously-variable transmission mainly is to rely on friction wheel (or friction disk, ball, ring etc.) transmission principle, by changing the transmission radius of driving link and driven member, the rotating speed of output shaft is infinitely changed.The problem of its existence is: 1. pair friction wheel transmission material requirements is relatively stricter; 2. can not guarantee accurate velocity ratio.In industry strict and agriculture field, can't use velocity ratio.At some velocity ratio is required relatively stricter industrial field, adopt mode electric, that surge to replace mechanical stepless speed-changing mostly.
In agricultural machinery technological field, for the essence that realizes sowing machine is measured adjustable sowing, and realize even seed flow, reduce seeding nonuniformity index and the index that departs from average flow rate as far as possible, all adopt the nail Type Seed Metering Device both at home and abroad, the amount of broadcasting of nail Type Seed Metering Device is regulated by changing its rotating speed and is realized.60 grades of speed changers of most at present employing are realized the adjusting to feed mechanism for seed, and this type of speed changer can't be realized the linearly adjust to feed mechanism for seed, and complex structure, and cost is higher.
Summary of the invention
The utility model is that a kind of small-sized high mechanical stepless speed-changing controlling device of velocity ratio validity will be provided.
In the above-mentioned interlock Lever type stepless speed variator, described cam adopts symplex structure, comprise two peaks and two minimum points on the profilogram of cam, cam comprises the anxious secondary smoothed curve that returns by peak to the profile line of minimum point, and cam is comprised to peak by minimum point and hangs down curvature secondary smoothed curve.
In the above-mentioned interlock Lever type stepless speed variator, the two cams line of peak separately are vertical mutually.
In the above-mentioned interlock Lever type stepless speed variator, an end of described arc guide groove 8 is fixed on the housing 17, and can rotate around this immovable point, and the outside of arc guide groove 8 contacts with a regulating block 9, and this regulating block 9 is assemblied on the housing 17 rotationally.
In the above-mentioned interlock Lever type stepless speed variator, two sets of transmission mechanism are installed in parallel on output shaft 1 and the input shaft 14.
In the above-mentioned interlock Lever type stepless speed variator, regulating block 9 is fixedlyed connected with handle 16.
The utility model interlock Lever type stepless speed variator has the following advantages: 1, adopt the cammingly transmission, and simple in structure, can satisfy various low speed transmissions.2, complete machine is in light weight, and volume is little, can satisfy the demand of all types of sowing machines.3, this speed changer belongs to the low speed transmission, and is not high to material requirements, and most component adopt the plastics aluminium to make, so the complete machine cost is very low.4, easy and simple to handle, can realize stepless even speed change from 0-1/3.
Description of drawings
Fig. 1 is the inside drive mechanism schematic representation of this interlock Lever type stepless speed variator;
Fig. 2 is this interlock Lever type stepless speed variator vertical view cutaway drawing;
Fig. 3 is one of interlock Lever type stepless speed variator principle schematic;
Fig. 4 is two of an interlock Lever type stepless speed variator principle schematic.
Specific embodiments
Below in conjunction with accompanying drawing embodiment of the present utility model is described:
In structural design of the present utility model, for guaranteeing the continuity of output, adopted the identical driving mechanism of two nested structures, they are installed in parallel on output shaft and the input shaft, for the purpose of difference, driving mechanism and outside gear mechanism in we are referred to as, the title of the component in every sets of transmission mechanism is also corresponding pass through with " interior " or " outward ".
As shown in Figure 1 and Figure 2,1 is output shaft, and 2 is interior mono-directional overrun clutch, 3 is outer mono-directional overrun clutch, and 4 is outer lever, and 5 is interior lever, 6 are the inner push-rod wheel, and 7 is interior steamboat, and 8 is arc guide groove, 9 is regulating block, and 10 is outer steamboat, and 11 is outer push-rod wheel, 12 is external cam, and 13 is cam ring, and 14 is input shaft, 15 is draught spring, and 16 is handle, and 17 is housing.
Wherein, inside and outside mono- directional overrun clutch 2,3 and output shaft 1 are connected to an integral body, outer mono-directional overrun clutch 3 and outer lever 4 are rotationally connected, outer push-rod wheel 11 and outer steamboat 10 are the two-wheeled on the outer lever 4, outer push-rod wheel 11 closely contacts with the pulling force of external cam 12 by draught spring 15, outer steamboat 10 closely contacts with the pulling force of arc guide groove 8 by draught spring 15, and an end of draught spring 15 links to each other with outer lever 4, and the other end links to each other with housing 17.Input shaft 14 and output shaft 1 are assemblied on the housing 17 by bearing, and arc guide groove 8 and regulating block 9 are assemblied on the housing 17 rotationally, and under the effect of steamboat 10, the outside of arc guide groove 8 and regulating block 9 press together outside.Handle 16 and regulating block 9 can be welded as a whole.Input shaft 14 and interior external cam 13,12 are rotated together, make inside and outside push- rod wheel 6,11 respectively along cam 13,12 external form contour motions, and inside and outside steamboat 7,10 moves in a circle along arc guide groove 8.To inside and outside mono- directional overrun clutch 2,3, the swing by inside and outside mono- directional overrun clutch 2,3 drives output shaft 1 and rotates outer lever 5,4 transmission of movement in the moving through of inside and outside push- rod wheel 6,11 and inside and outside steamboat 7,10.
In this interlock Lever type stepless speed variator, cam adopts symplex structure, and a cam has two peaks and two minimum points.For guaranteeing the continuity of motion, cam adopts the anxious secondary smoothed curve that returns by peak to minimum point, and cam adopts low curvature secondary smoothed curve by minimum point to peak.The two cams line of peak separately are vertical mutually, and promptly two cams are installed on the input shaft 14 with staggering 90 degree.
In this interlock Lever type stepless speed variator, for guaranteeing the continuity of output, the rise of any one cam all comprises the return interval of another cam in the time, 12,13 and two levers 4,5 of two cams in inside and outside two sets of transmission mechanism can replace transfer motion power, to guarantee that output shaft 1 has the continuously and smoothly to export.
Regulating block 9 is fixedlyed connected with handle 16, rotate regulating blocks 9 by handle 16 and make it be in diverse location, thereby the position of control arc guide groove 8, can realize from
Between step-less adjustment at the uniform velocity.
As shown in Figure 3, make arc guide groove 8 around center of circle O by rotating regulating block 9
3Rotate also and be vertical state, promptly camber line EF two-end-point is wired to vertical state, and the center of circle of circular arc EF is A, and then under the effect of cam 12,13, lever ABCD is that the circumference in the center of circle rotatablely moves bar O with A around A point work
2A is static.Be O
2Axle (output shaft) does not have power output.At this moment its velocity ratio is zero.
As shown in Figure 4, make arc guide groove 8 around center of circle O by rotating regulating block 9
3Rotation is also inclined, and promptly camber line EF two-end-point line and horizontal line are certain angle, and the center of circle of circular arc EF is O
4, promptly under the effect of cam 12,13, some B is around O
4EF moves in a circle along arc guide groove, and some A is around O
2Point moves in a circle, when the stroke of an A reaches maximum, and when promptly the peak of cam contacts with push-rod wheel, AO
2Reach maximum with the angle α of vertical direction.Input shaft 14 rotates a circle, and push-rod wheel is through four peaks of two cams 12,13, and mono- directional overrun clutch 2,3 is swung four times, thereby realizes maximum transmission ratio
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1, a kind of interlock Lever type stepless speed variator, comprise housing (17), be located at output shaft (1), input shaft (14) in the housing (1 7), and driving mechanism, it is characterized in that, described driving mechanism is two covers, every sets of transmission mechanism comprises the cam that is installed on the input shaft (14), and the push-rod wheel that matches with cam, this push-rod wheel are located on the lever, one end of this lever is connected with a mono-directional overrun clutch, and this mono-directional overrun clutch is fixed on the output shaft (1); End near push-rod wheel on the described lever is provided with a steamboat, this steamboat matches with an arc guide groove (8), the other end of described lever is connected with draught spring (15), the other end of draught spring (15) links to each other with housing (17), described push-rod wheel closely contacts with the pulling force of cam by draught spring (15), described steamboat closely contacts with the pulling force of arc guide groove (8) by draught spring (15), described push-rod wheel and steamboat are fixed on the described lever, and can rotate with respect to this lever.
2, interlock Lever type stepless speed variator according to claim 1, it is characterized in that, described cam adopts symplex structure, comprise two peaks and two minimum points on the profilogram of cam, cam comprises the anxious secondary smoothed curve that returns by peak to the profile line of minimum point, and cam is comprised to peak by minimum point and hangs down curvature secondary smoothed curve.
3, interlock Lever type stepless speed variator according to claim 2 is characterized in that, the two cams line of peak separately are vertical mutually.
4, according to claim 1 or 2 or 3 described interlock Lever type stepless speed variators, it is characterized in that, one end of described arc guide groove (8) is fixed on the housing (17), and can rotate around this immovable point, the outside of arc guide groove (8) contacts with a regulating block (9), and this regulating block (9) is assemblied on the housing (17) rotationally.
5, according to claim 1 or 2 or 3 described interlock Lever type stepless speed variators, it is characterized in that two sets of transmission mechanism are installed in parallel on output shaft (1) and the input shaft (14).
6, according to claim 1 or 2 or 3 described interlock Lever type stepless speed variators, it is characterized in that regulating block (9) is fixedlyed connected with handle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620167584 CN200993217Y (en) | 2006-12-20 | 2006-12-20 | Connecting lever type stepless speep variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620167584 CN200993217Y (en) | 2006-12-20 | 2006-12-20 | Connecting lever type stepless speep variator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200993217Y true CN200993217Y (en) | 2007-12-19 |
Family
ID=38946292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620167584 Expired - Lifetime CN200993217Y (en) | 2006-12-20 | 2006-12-20 | Connecting lever type stepless speep variator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200993217Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948697A (en) * | 2014-03-24 | 2015-09-30 | 本田技研工业株式会社 | Continuously variable transmission |
| CN112324816A (en) * | 2020-11-06 | 2021-02-05 | 洛阳轴承研究所有限公司 | Inclined strut type overrunning clutch |
-
2006
- 2006-12-20 CN CN 200620167584 patent/CN200993217Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948697A (en) * | 2014-03-24 | 2015-09-30 | 本田技研工业株式会社 | Continuously variable transmission |
| CN112324816A (en) * | 2020-11-06 | 2021-02-05 | 洛阳轴承研究所有限公司 | Inclined strut type overrunning clutch |
| CN112324816B (en) * | 2020-11-06 | 2022-01-21 | 洛阳轴承研究所有限公司 | Inclined strut type overrunning clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071219 |
|
| EXPY | Termination of patent right or utility model |