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Mechanical gear type stepless automatic transmission

An automatic transmission and gear type technology, applied in the transmission field, can solve the problems of inability to withstand large torque, engine power loss, and frustration, and achieve the effects of fast acceleration response, low cost and fast change speed.

Active Publication Date: 2018-08-10
邓进桃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are four kinds of transmissions in real life, namely: manual transmission, automatic transmission, DCT dual-clutch transmission and CVT continuously variable automatic transmission. Manual transmission requires manual shifting and is prone to frustration. When shifting gears, the combination of the clutch and the brake will produce a sense of frustration. The DCT dual-clutch transmission and the CVT continuously variable automatic transmission are slow to accelerate, and the CVT continuously variable automatic transmission is driven by a belt or a steel belt, which cannot withstand large torque. The above-mentioned automatic transmission, DCT dual Clutch transmission and CVT continuously variable automatic transmission control the change of transmission ratio through electronic circuit system, so it is not as direct as that of MT transmission during rapid acceleration, and the engine has power loss due to idling

Method used

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  • Mechanical gear type stepless automatic transmission

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Experimental program
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Effect test

Embodiment 1

[0023] see figure 1 , the continuously variable automatic transmission provided by the present invention includes a casing, an input shaft 1 and an output shaft 2 sleeved on the casing, and also includes a first planetary row arranged inside the casing, and the input shaft 1 is fixedly connected with the first An input gear 7, the first ring gear 3 outer sleeve is fixed with the second input gear 8 which is constantly meshed with the first input gear 7, the first planetary row includes the first ring gear 3 meshing with the input shaft 2, a plurality of ( At least two) the first planetary gear 4, the first planetary carrier 5 and the first sun gear 6, the first planetary gear 4 is installed on the first planetary carrier 5 and is connected with the internal teeth of the first ring gear 3 and the first sun gear 6 respectively. The outer teeth of the first sun gear 6 are in constant mesh, the first sun gear 6 transmits power to the output shaft 2, and also includes a second plan...

Embodiment 2

[0026] The difference from Embodiment 1 is that it also includes a differential gear train arranged inside the housing. The differential gear train includes a driving side gear 13, a driven side gear 14, and a side-by-side The provided first gear 15 and the second gear 16 are installed on the first gear 15 and a plurality of (at least two) first bevel gears 17 that are constantly meshed with the drive side gear 13 and can rotate on the second gear 16 And a plurality of (at least two) second bevel gears 18 and dual gears 19 that can rotate, the axis of the first bevel gear 17 is perpendicular to the axis of the first gear 15, the axis of the second bevel gear 18 is perpendicular to the axis of the second gear 16 The axis is vertical, between the first gear 15 and the second gear 16, a double-sided side gear 20 is arranged in the housing, the axis of the double-sided side gear 20 coincides with the axis of the first gear 15, and the side of the double-sided side gear 20 It is co...

Embodiment 3

[0030] The difference from Embodiment 2 is that this embodiment also includes a shifting assembly installed in the housing, and the shifting assembly includes an external spline 24 coaxially fixedly connected to the output shaft 2 , an external spline sleeved on the external spline 24 Inner spline sliding sleeve 25, the first output gear 26 and the second output gear 27 that are positioned at outer spline 24 both sides, first output gear 26 and second output gear 27 are all provided with inner spline sliding sleeve 25 The matching sliding shaft 28; the fifth gear 23 is in constant mesh with the first output gear 26, and the transmission shaft 29 is also fixedly provided with a seventh gear 31, which is in constant mesh with the second output gear 27. When the inner spline slides When the sleeve 25 is combined with the first output gear 26, the external spline 24 drives the output shaft 2 to rotate forward; when the internal spline sliding sleeve 25 is combined with the second o...

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Abstract

The invention discloses a mechanical gear type stepless automatic transmission which comprises an input shaft, an output shaft, a first planet row, a second planet row and a differential gear train. The first planet row, the second plane row and the differential gear train are arranged in a shell. The input shaft and a gear ring of the first planet row form engaging transmission, the second planetrow and the first planet row share the gear ring and a planet carrier, the tooth number of a second sun wheel is large than that of a first sun wheel, the first sun wheel transmits power to the differential gear train, an output shaft of the differential gear train is connected with a gear shift assembly to transmit power to the output shaft and meanwhile is in transmission connection with the second sun wheel, the second sun wheel and the planet carrier only can rotate in one way, the rotating direction of the second sun wheel is opposite to that of the gear ring, and the rotating directionof the planet carrier is the same as that of the gear ring. Transmission ratio stepless gear shifting is achieved through the first planet row, the second planet row and the differential gear train, the continuity and smoothness of existing CVT transmissions are achieved in the whole process, and meanwhile the mechanical gear type stepless automatic transmission has the advantages of being high inacceleration and response speed and capable of bearing large torque of MT transmissions.

Description

technical field [0001] The invention belongs to the technical field of transmission, in particular to a mechanical gear type continuously variable automatic transmission. Background technique [0002] With the rapid development of the automobile industry, it brings about the rapid development of the related auto parts industry. With the automobile industry policy, more and more people use cars, and the requirements for driving comfort of vehicles are also getting higher and higher. Therefore, for The shifting quality of the transmission places high demands. There are four kinds of transmissions in real life, namely: manual transmission, automatic transmission, DCT dual-clutch transmission and CVT continuously variable automatic transmission. Manual transmission requires manual shifting and is prone to frustration. When shifting gears, the combination of the clutch and the brake will produce a sense of frustration. The DCT dual-clutch transmission and the CVT continuously va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44
CPCF16H3/44F16H3/56F16H3/76F16H57/023F16H2057/02043F16H2200/2007
Inventor 邓进桃
Owner 邓进桃
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