Unidirectional high-precision meshed-transmission toothed chain board for conveying chains

Abstract

The invention relates to a unidirectional high-precision meshed-transmission toothed chain board for conveying chains, and belongs to the field of chain transmission. The chain board has double circular pitches on a meshing line, each chain board body has three teeth, and a tooth profile 11 of the first tooth belongs to linear tooth profiles, wherein the apothem of the first tooth belongs to the apothem f of the chain board of a standard toothed chain; a tooth profile 18 of the third tooth also belongs to the linear tooth profiles, and the apothem f1 of the third tooth is 0.96-0.98 time of the apothem f of the chain board of the standard toothed chain; a tooth profile 17 of the third tooth belongs to non-working random-curve tooth profiles, a tooth profile 16 of the second tooth belongs to the linear tooth profiles, and the tooth form half-angle of the second tooth is alpha1/2; a tooth profile 13 of the first tooth and a tooth profile 14 of the second tooth are convex curves, and the protrusion amount delta is about 0.01f-0.03f. The unidirectional high-precision meshed-transmission toothed chain board for the conveying chains has the advantages that the chain board is small in weight, and directional transmission, meshing and positioning can be conducted on different tooth profiles; the whole meshing processes are smooth, erosion of the positioning tooth profiles, vibration impact and noise are small, the positioning precision is high, and the chain board is particularly suitable for conveying accessories in automatic production lines.

Description

technical field [0001] The invention belongs to the field of chain transmission, in particular to a chain plate of a unidirectional high-precision meshing transmission toothed transmission chain. Background technique [0002] Chain transmission is one of the main forms of mechanical transmission. In the case of large center distance and variable speed and load, its performance is more worrying than gear transmission and belt transmission. The toothed chain has the characteristics of low noise, high reliability and high motion precision. Widely used in the timing system of automobile engines, oil pump systems, aerospace and other fields, scholars at home and abroad have done a lot of research on high-speed transmission toothed chains, and designed a variety of toothed chains, making high-speed transmission toothed chains widely used Application, but mainly focus on the high-speed transmission of the toothed chain, due to the lightweight problem of the toothed chain, it has no...

AI Technical Summary

Problems solved by technology

[0002] Chain transmission is one of the main forms of mechanical transmission. In the case of large center distance and variable speed and load, its performance is more worrying than gear transmission and belt transmission. The toothed chain has the characteristics of low noise, high reliability and high motion precision. Widely used in the timing system of automobile engines, oil pump systems, aerospace and other fields, scholars at home and abroad have done a lot of research on high-speed transmission toothed chains, and designed a variety of toothed chains, making high-speed transmission toothed chains widely used application, but mainly focused on the high-speed transmission of the toothed chain, due to the lightweight problem of the toothed chain, it has not been applied to the conveyor

Each chain plate of the traditional standard toothed chain has single-pitch double teeth. The outer line of the chain plate is a straight tooth profile, and the inner side is a straight line or concave curved tooth profile. It meshes with the standard straight toothed chain sprocket. The meshing of each chain link and the sprocket is completed in an instant, so the impact and vibration are relatively large, the noise is large, the wear is serious, and the transmission efficiency is low.

Due to the traditional chain, each pitch is hinged by a pin, so the mass of the entire chain is relatively large, which is not suitable for conveyor chains, and the lightweight of the conveyor chain affects the performance of the conveyor

At the same time, in the process of meshing transmission, because the impact energy is directly proportional to the quality of the chain, the vibration generated by the traditional chain is relatively large, which will generate large noise, pollute the environment, and will also affect the motion accuracy and service life of the chain. It is not conducive to the smooth, efficient and low-noise delivery of parts on the automobile production line

Each tooth profile of the traditional toothed chain participates in both meshing and positioning, with serious wear and low precision. The production line mainly runs in one direction. The plate meshing and positioning are carried out in separate tooth profiles, with high motion accuracy and positioning accuracy

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