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Novel worm gear type speed changer and speed changing method thereof

A transmission and worm gear technology, applied in the direction of gear transmission, belt/chain/gear, transmission parts, etc., can solve the problems of high cost, large occupied volume, complex transmission structure, etc., and achieve the goal of reducing volume and increasing transmission speed Effect

Inactive Publication Date: 2019-02-15
HUAINAN UNITED UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of worm gear transmission to solve the problems of complex structure, slow speed change, high cost and large occupied volume of the electric vehicle transmission in the prior art

Method used

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  • Novel worm gear type speed changer and speed changing method thereof
  • Novel worm gear type speed changer and speed changing method thereof
  • Novel worm gear type speed changer and speed changing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 1-4 As shown, the present invention provides a novel worm gear transmission, the basic technical scheme is as follows: including input shaft 12, first gear worm gear 2, second gear worm gear 8, first gear worm 3, second gear worm 9, second gear clutch 6, first gear Gear clutch 7, first gear reduction gear 4, second gear reduction gear 10, output gear 5 and output shaft 13, coaxial connection between the first gear worm gear 2 and the second gear worm gear 8, the input shaft 12 is fixedly connected On the worm shaft 11 that drives the first gear worm gear 2 or the second gear worm gear 8, the first gear worm gear 2 meshes with the first gear worm 3, and the second gear worm gear 8 meshes with the second gear worm 9 , the first gear worm 3 is coaxially connected to the axle of the first gear reduction gear 4 through the first gear clutch 7, and the second gear worm 9 is coaxially connected to the second gear reduction gear 10 through the second gear clutch...

Embodiment 2

[0052] Such as Figure 5 As shown, the present invention provides a worm gear transmission for electric vehicles, which is improved on the basis of the first embodiment to be suitable for driving devices such as the engine 21 or the one-way rotating electric motor 1 . The improvement point is that a reverse gear mechanism and a drive shaft are added, the reverse gear mechanism includes a reverse gear synchronizer 15 and a reversing gear mechanism, the gear hub of the reverse gear synchronizer 15 is fixedly connected with the drive shaft, and the reverse gear synchronizer The synchronous ring on one side of the gear hub 15 is fixedly installed on the input shaft 12, and the synchronous ring on the other side of the toothed hub is fixedly installed on the wheel shaft of the input gear 16 of the reversing gear mechanism, so The wheel shaft of the input gear 16 is a sleeve shaft vacantly sleeved on the drive shaft, and the wheel shaft of the input gear 16 is connected with the dri...

Embodiment 3

[0060] Such as Figure 6 As shown, a further improvement has been made on the basis of Embodiment 2, mainly to adapt to hybrid vehicles, which must be driven by both the motor and the engine 21 . Therefore, the improvement of this embodiment is that: a driving device conversion mechanism is also provided, including an engine switching clutch and a motor switching clutch 23, and there are two drive shafts and the input shaft 12, and the drive shaft includes an engine drive shaft And the motor drive shaft, the input shaft 12 includes the engine input shaft 12 and the motor input shaft 12 respectively connected to the two sections of the worm gear shaft 11, the engine drive shaft is connected to the reverse gear synchronizer 15 through the engine switching clutch The gear hub of the gear hub, the reverse gear synchronizer 15 is located at the synchronous ring on the side of the gear hub and the reverse gear output gear 20 is fixedly installed on the engine input shaft 12, and the m...

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Abstract

The invention discloses a novel worm gear type speed changer and a speed changing method thereof. In the speed changer, a first-gear worm gear and a second-gear worm gear are coaxially connected, an input shaft is fixedly connected to a worm gear shaft, the first-gear worm gear is engaged with a first-gear worm, the second-gear worm gear is engaged with a second-gear worm, the first-gear worm is coaxially connected to an axle of a first-gear speed reducing gear through a first-gear clutch, the second-gear worm is coaxially connected to an axle of a second-gear speed reducing gear through a second-gear clutch, the first-gear speed reducing gear and the second-gear speed reducing gear are both engaged with an output gear, an output shaft is fixedly connected with an axle of the output gear,and the second-gear clutch and the first-gear clutch are connected to a gear-shifting control device. The transmission ratio of the novel worm gear type speed changer is large, and the size of the speed changer is also reduced. In addition, during engagement of the gears, the gears are in rolling contact mainly, the worm gears and the worms are in sliding contact mainly, and therefore, factors forgeneration of noises and vibration are less.

Description

technical field [0001] The invention relates to the field of transmissions, in particular to a novel worm gear transmission and a speed changing method thereof. Background technique [0002] In the transmission system of pure electric vehicles, the reducer is often used as the transmission device. At present, many electric vehicles in China are modified from traditional vehicles. In order to reduce development costs, the transmissions often use traditional manual five-speed transmissions. Fixed in one gear, used as a fixed speed ratio reducer, unable to achieve gear shifting. Due to other restrictions such as road conditions, the driving performance of the car is constantly changing, and the motor cannot always work in the best state. If the above-mentioned solution requires the maximum power of the motor to meet the requirements of the power at the highest speed, the power at the maximum gradient, and the power at the acceleration time, most electric vehicle manufacturers ...

Claims

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Application Information

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IPC IPC(8): F16H3/20F16H57/023F16H61/02
CPCF16H3/20F16H57/023F16H61/02
Inventor 李娟鲁宁孙晓东祁琦李晟锴
Owner HUAINAN UNITED UNIVERSITY
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