Chain link unit

Abstract

A link unit of a chain comprises outer chain plates, inner chain plates, pin shafts and shaft sleeves. The inner chain plates and the outer chain plates are provided with holes according to a pitch; outer tooth rings with partial teeth are fixed at the pitch holes at the inner side of the outer chain plates; partial teeth are processed in the pitch holes of the inner chain plates; the shafts sleeve the pin shafts during installation; the outer diameter of the shaft sleeves is larger than the diameter of the pitch holes of the inner chain plates, so that dislocation of the inner chain plates isprevented, and then two ends of each pin shaft pass through the pitch holes of the inner chain plates and are in interference fit with the pitch holes of the outer chain plates; and the inner teeth of the inner chain plates are meshed with the teeth of the outer tooth rings of the outer chain plates. In a running process, the inner chain plates and the outer chain plates transmit power to each other through pulling force; when the inner chain plates and the outer chain plates rotate relatively at a position where the chain is meshed with a chain wheel, the inner teeth of the inner chain plates and the outer teeth of the outer tooth rings of the outer chain plate are meshed relatively to form a pure rolling track; and in a whole running process of the chain, the inner teeth of the inner chain plates and the outer teeth of the outer tooth rings of the outer chain plates are both in a pure rolling meshing state, so that influence on normal use by lengthening, loosening, slippage and thelike caused by the fact that the link structure is damaged by relative rotation sliding friction of the link unit is avoided.

Description

technical field [0001] The invention relates to a chain, in particular to a chain of linking mode which relies on rolling to transmit power. Background technique [0002] Chain drives and belt drives are used in a wide variety of applications. The belt transmission has good elasticity and can act as a shock absorber and buffer, so the transmission is stable, the noise is low, and no lubrication is required; when overloaded, the belt and the pulley will slip, which can prevent other parts from being damaged. However, when installing additional functional components on ordinary belts, use The bonding strength is insufficient, and its integrity is destroyed by punching and riveting. The physical properties such as belt strength and tensile strength are greatly reduced, and it is easy to be torn during work. Chain drive is a transmission method that transmits the movement and power of the driving sprocket with special tooth shape to the driven sprocket with special tooth shape ...

AI Technical Summary

Problems solved by technology

The main disadvantages of chain transmission are: it can only be used for transmission between two parallel shafts; high cost, easy to wear, easy to elongate, poor transmission stability, and additional dynamic load, vibration, impact and noise will be generated during operation. Many chain transmission mechanisms The installation of tensioning mechanism in Zhongdu increases cost and weight

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