CN87201028U - Speed variator without free position - Google Patents
Speed variator without free position Download PDFInfo
- Publication number
- CN87201028U CN87201028U CN 87201028 CN87201028U CN87201028U CN 87201028 U CN87201028 U CN 87201028U CN 87201028 CN87201028 CN 87201028 CN 87201028 U CN87201028 U CN 87201028U CN 87201028 U CN87201028 U CN 87201028U
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- CN
- China
- Prior art keywords
- speed
- wheel
- ratchet
- gear
- driven member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a mechanical driving device, which is provided with advancing fast-slow two positions outputting rotation speed. The space between the two positions is without free position. The fast-slow two speeds are controlled by a ratchet mechanism. The ratchet mechanism is an intermediate transmission device which is free from simultaneous requirement restriction of inputting rotation speed and outputting rotation speed. The utility model is suitable for the transmission occasion where foot pedaling frequency and vehicle running speed are changed by the factors such as roads, slope, loading weight, etc., and vehicles which apply human power as the power, such as human power tricycles, etc.
Description
The utility model is a kind of mechanical transmission.
Present technique is according to China plains region, and the needs of the manpower three-wheel power car of extensive use are made.Manpower three-wheel power car has only a velocity ratio at present, can only produce a moment, do not satisfy the needs when heavily loaded, promptly do not increase a jogging speed and there is the neutral gear speed changer, manpower was not able to coupling like a cork with outer carrying when the transition of speed second gear had neutral gear also can make heavy duty during the velocity ratio of moment, and speed change greatly.Through preliminary search and social factual survey, all there is not this type of transmission device on the domestic pedicab.
The utility model technology: be to solve and labor intensity when improving pedicab and trampling and the starting torque when increasing heavy duty or the speed when improving underloading, thereby reach laborsaving and purpose efficiently.
This transmission device has the speed of advancing second gear rotating speed, there is not neutral position between the second gear, the speed two-speed is controlled by a kind of ratchet mechanism, it is a kind of intermediate actuator that is not subjected to input speed and output speed to require synchronously and limit, be applicable to that similar manpower three-wheel power car etc. is a power according to manpower, and frequency and Vehicle Speed when both feet are trampled, the transmission occasion that changed by factors such as road, the gradient, Weight Loaded.
No neutral gear speed changer is by planetary mechanism, and ratchet brake and freewheel are formed, shown in the accompanying drawing.Among the figure:
Driving wheel (1) is fixed as one by main shaft (2) and tie-rod (3), and ratchet (8) is a casing that can rotate around axes O O.Ratchet on its outer garden can be maintained static by crescent (12) control.Body is interior to be the planetary mechanism of driving link by adorning one group with tie-rod (3), and the driven member central gear (7) in the planetary mechanism is fixed as one with it, and another driven member gear ring (5) of planetary mechanism also is fixed as one with star-wheel (11) sprocket wheel (6).Wherein star-wheel (11) and with the ratchet end cap in the sleeve (9) that forms of garden form the freewheel of unidirectional movement by roller (10).
Driving wheel in the transmission mechanism (1) is a driving link, and sprocket wheel (6) is a driven member.Crescent (12) is a controller, is to be used for causing two driven member central gears (7) and gear ring (5) in the planetary mechanism to go up the power difference and to make the member of its conversion power transmission line.
Slow shelves: when the crescent moon gib is inoperative, driven member gear ring (5) in the planetary mechanism is equivalent to be subjected to outer year power on the sprocket wheel (6) to fix at this moment, mechanism has only one degree of freedom, another driven member central gear (7) is locked gear ring (5) by ratchet (8) and freewheel, speed changer is become one force sprocket wheel (6) to rotate around axes O O together, export by sprocket wheel (6).The angular velocity of driving link equals the angular velocity of driven member at this moment.
Fast shelves, doing the time spent when the crescent moon gib blocks ratchet (8), make it can not be when axes O O rotates, a driven member central gear (7) that is equivalent in the planetary mechanism is maintained static by external force, so another driven member gear ring (5) speedup is rotated, freewheel is thrown off, and by sprocket wheel (6) output, the angular velocity on the driven member is greater than the angular velocity on the driving link at this moment.
As seen do not have that the gear shift of neutral gear speed changer speed need only just can realize by the crescent in the ratchet controller.According to mechanics principle, their variation multiple and moment are inversely proportional to after the constant and output speed of input speed changes, so the same moment at a slow speed with other speed changer of such speed changer is big, and fast shelves rotating speed height.
No neutral gear speed changer rotating ratio is relevant with the number of teeth on driving wheel (1) central gear (7) gear ring (5) and the driven sprocket (6), therefore its can by gear ratio calculate the same with prior art is implemented present technique and need be designed and can realize by described structure of this specification and concrete velocity ratio.
Claims (1)
- A kind of no neutral gear speed changer with the two kinds of output speeds of speed that advance, it is characterized in that: driving wheel (1) is fixed as one by main shaft (2) and tie-rod (3), ratchet (8) is a casing that can rotate around axes O-O, ratchet on its outer garden, maintained static by crescent (12) control, body is interior to be the planetary mechanism of active by adorning one group with tie-rod (3), and the driven member central gear (7) in the planetary mechanism is fixed as one with it, the outside ring gear (5) of planetary mechanism and star-wheel (11) and driven member sprocket wheel (6) are fixed as one, star-wheel (11) and with the ratchet end cap in the sleeve (9) that forms of garden form the freewheel of unidirectional movement by roller (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87201028 CN87201028U (en) | 1987-02-07 | 1987-02-07 | Speed variator without free position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87201028 CN87201028U (en) | 1987-02-07 | 1987-02-07 | Speed variator without free position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87201028U true CN87201028U (en) | 1988-03-30 |
Family
ID=4817379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87201028 Expired - Lifetime CN87201028U (en) | 1987-02-07 | 1987-02-07 | Speed variator without free position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87201028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660409B (en) * | 2008-08-30 | 2011-11-09 | 三一重型装备有限公司 | Driving speed reducing device |
-
1987
- 1987-02-07 CN CN 87201028 patent/CN87201028U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660409B (en) * | 2008-08-30 | 2011-11-09 | 三一重型装备有限公司 | Driving speed reducing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |