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Unequal pitch high speed transmission gear chain and chain wheel

A high-speed transmission, toothed chain technology, applied in the direction of transmission chain, transmission device, belt/chain/gear, etc., can solve the problems of complex process, high cost, difficult to popularize and apply, etc., to improve transmission capacity, low cost, eliminate The effect of changing the position of the meshing line

Inactive Publication Date: 2007-09-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Toothed chains using rolling pins or oval pins produced by German Ramsey company are usually limited to medium and low speeds of ≤5000 rpm, and the process is complicated and the cost is high, so it is difficult to popularize and apply in China, especially not suitable for motorcycles and cars. small pitch toothed chain

Method used

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  • Unequal pitch high speed transmission gear chain and chain wheel
  • Unequal pitch high speed transmission gear chain and chain wheel
  • Unequal pitch high speed transmission gear chain and chain wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A small-pitch sprocket used for air distribution transmission between a motorcycle crankshaft and a camshaft. The sprocket shown in Figure 5 meshes with the toothed chain chain shown in Figures 3 and 4, the pitch of the chain is 6.35mm, and the pitch of the sprocket is 6.34mm. The toothed chain and the sprocket are meshed by point contact, the impact speed of meshing is small, the noise is low, and the service life is long. It is suitable for high-speed transmission with a linear speed of ≥25m / s and a rotational speed of 6000~10000 rpm.

Embodiment 2

[0025] Embodiment 2: A sprocket with a small pitch and a small number of teeth used for air distribution transmission between a motorcycle crankshaft and a camshaft. Figure 7 is the tooth profile curve of the sprocket. The single-tooth single-side tooth profile of the sprocket is composed of three sections of curves in parts 1, 2 and 3, of which parts 1 and 3 are two arcs, and part 2 is a slightly convex curve. The sprocket The teeth are symmetrical. The sprocket shown in Figure 6 meshes with the toothed chain chain shown in Figures 3 and 4, the pitch of the chain is 6.35mm, and the pitch of the sprocket is 6.31mm. The toothed chain and sprocket have low noise and long life, suitable for high-speed transmission.

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Abstract

The invention discloses an irregular pitch high gear inverted tooth chain and chain gear. The inverted tooth chain and the chain gear have irregular pitch. And the pitch of the chain gear is shorter than that of the chain. The single tooth and single side gear form of the chain gear is made up of three stage curves, two arcs and one tiny protruding curve. The gear form of the chain gear is symmetrical. In the end section of the chain gear, gear inverted tooth chain joggles with the chain gear in point contacting form. In order to realize the best performance, the gear inverted tooth chain and the chain gear could be designed and made pairing. It is suited for high gear, especially for the gas distribution / timing chain drive and lubricating pump drive of motorcycle and motorcar.

Description

(1) Technical field [0001] The invention belongs to the field of mechanical manufacturing, relates to high-speed chain transmission technology, and is especially suitable for high-speed transmissions such as gas distribution / timing chain transmission and oil pump transmission of automobiles and motorcycle engines. (2) Background technology [0002] Toothed chain drives are widely used in various workplaces that require smooth movement, low noise, and high speed, such as engine timing / air distribution drives for automobiles and motorcycles. The air distribution transmission between the crankshaft and the camshaft of the motorcycle and automobile engine to achieve accurate ignition timing, and the transmission speed of the air distribution chain is very high. In the traditional toothed chain, the outer straight tooth profile of the chain piece meshes with the straight tooth profile of the sprocket, and the meshing of each chain link with the sprocket is completed in an instant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16G13/04F16H55/30F16H7/06
Inventor 王勇
Owner SHANDONG UNIV
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