Stepless speed change device and application thereof

A technology of continuously variable speed change device and speed change gear, which is applied in the direction of vehicle gearbox, wheel drive device, transportation and packaging, etc., can solve the problems of chain twist, chain jam, production quality fluctuation, etc., to overcome the unstable speed change, control Simple, comfort-enhancing effect

Inactive Publication Date: 2015-11-11
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of teeth of each sprocket in the sprocket set is fixed, and the transmission ratio does not change smoothly during the transmission process; in addition, during the transmission process, the driving sprocket and the driven sprocket are not in the same plane most of the time, causing the chain to be twisted and easy to cause off-chain , card chain, accelerated chain sprocket wear
[0004] The continuously variable transmission device on the machine tool in the industry generally relies on the headstock with multiple pairs of gears inside to change the speed. adjustment; in addition, the separation and meshing of gears occurs during speed regulation, and there is a large impact at the moment of meshing, which will cause impacts on various components
[0005] The speed change of the case packing machine and sleeve labeling machine is still realized through the gearbox. On the one hand, the gearbox occupies a large volume;

Method used

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  • Stepless speed change device and application thereof
  • Stepless speed change device and application thereof
  • Stepless speed change device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to image 3 , the above-mentioned continuously variable transmission device is applied to the bicycle, the left side is the continuously variable transmission device, which is installed on the rear wheel and is coaxial with the rear wheel, and is used to replace the transmission device of the existing variable speed bicycle; the right side is the drive sprocket 1 , same as existing bicycle, chain 2 passes tension wheel 20 around it. The large gear 4 is connected with the driving sprocket 1 through the control rod, the rotation of the large gear 4 drives the pinion 5, and the rotation of the pinion 5 drives the shift rack 6 to move back and forth, so as to realize the overall expansion and contraction of the shift rack 6, thereby achieving the purpose of changing the diameter of the transmission .

[0036] For details on the control section, see Figure 4 , Figure 5 and Figure 6 , the middle part of the control rod is fixed on the frame 10, the two ends of th...

Embodiment 2

[0043] Apply this continuously variable transmission device to industry, such as Figure 7 and Figure 8 As shown, two sets of continuously variable transmission devices are adopted, and a transmission chain or a transmission belt 17 can be used to bypass the sprocket disc or small pulley 8 of the continuously variable transmission device. Two sets of continuously variable transmission devices are installed on the same frame 10, and the front and rear axes are arranged horizontally; the large gears 4 of the two sets of continuously variable transmission devices are respectively connected with the front speed regulating motor 18 and the rear speed regulating motor 19. The two motors drive the internal large gear 4 to rotate through rotation, so as to realize speed change.

[0044] When driving normally, the two motors do not work, that is, the transmission device does not work;

[0045] When the transmission ratio needs to be increased, the rear speed-regulating motor 19 rota...

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Abstract

The invention discloses a stepless speed change device and application thereof. The stepless speed change device comprises a gearbox body. The gearbox body is internally provided with a large gear and a plurality of small gears. The small gears are distributed at the periphery of the large gear in a meshed mode. One side of each small gear is meshed with a speed change rack. T-shaped grooves are formed in the gearbox body in the radial direction. The speed change racks are movably embedded in the T-shaped grooves and stretch out of the gearbox body. The tail ends of the speed change racks are provided with chain tooth discs or small belt wheels. The stepless speed change device can be applied to bicycles or the industry and is stable in speed change, easy to control, convenient to use and high in transmission efficiency.

Description

technical field [0001] The invention relates to a speed change device, in particular to a continuously variable speed change device and its application. Background technique [0002] The transmission is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio of the output shaft and the input shaft in fixed or stepwise steps, also known as the gearbox. Most of the transmission mechanisms are driven by ordinary gears, and some are driven by planetary gears. The simple transmission has the advantages of high efficiency, simple structure and convenient use, but the number of gears is small and there is impact, so it is only suitable for some lathe workers with a small number of gears. [0003] Most existing bicycle transmissions use tower sprocket sets on the driving sprocket and driven sprocket, and adjust the chain position through the derailleur to make the chain mesh with different sprockets, thereby changing the transmission ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M11/04
Inventor 樊东东董佑浩卢聪赵志键杨福芹
Owner QINGDAO UNIV OF SCI & TECH
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