Tooth-shaped chain

Abstract

The invention provides a tooth-shaped chain which comprises inner chain plates, outer chain plates, short pin shafts and long pin shafts, wherein the inner chain plate holes formed in the inner chain plates are circular holes or non-circular profile holes; a pair of tooth-shaped bulges is formed in each inner chain plate hole; the inner chain plate holes are divided into outer side slots and inner side hole grooves through the bulges; the short pin shafts are axially positioned through the bulges and the outer side slots, and are fixed together with the inner chain plates in an interference fit manner; multiple inner chain plates are overlapped to form an inner link; the long pin shafts penetrate through the inner side hole grooves of the inner chain plates and are riveted together with the two outer chain plates tightly to form an outer link; the short pin shafts of the inner link is in contact with the long pin shafts of the outer link through arc working surfaces to form a rotation pair which can rotate within a certain range. According to the tooth-shaped chain provided by the invention, the structural constraints of the conventional tooth-shaped chain and Hy-Vo tooth-shaped chain are broken through, the friction loss and impact vibration between the pin shafts and chain plates are reduced by changing the assembling mode of the pin shafts and the arrangement mode of the inner chain plates, and the mechanized and scale production of high-speed tooth-shaped chains is achieved.

Description

technical field [0001] The invention relates to a chain transmission component, in particular to a toothed chain for power transmission. Background technique [0002] Chain drive is a mechanical transmission that transmits power and motion by the meshing of chain and sprocket teeth. Its biggest feature is accurate average transmission ratio and high transmission efficiency; the biggest disadvantage is easy wear, easy elongation, and loud noise. Compared with belt drive, chain drive has four main advantages: [0003] 1. No elastic sliding and skidding phenomenon, accurate average transmission ratio, reliable operation and high efficiency; [0004] 2. Large transmission power, strong overload capacity, and small transmission size under the same working conditions; [0005] 3. The required tension force is small, and the pressure acting on the shaft is small, which can reduce the friction loss of the bearing; [0006] 4. Can work in harsh environments such as high temperatu...

AI Technical Summary

Problems solved by technology

[0008] 1. It can only be used for transmission between two parallel shafts;

[0009] 2. High cost, easy to wear and stretch;

[0010] 3. The transmission stability is poor, and additional dynamic load, vibration, impact and noise will be generated during operation;

[0011] 4. It should not be used in rapid reverse transmission

However, the larger the pitch, the greater the dynamic load caused by the chain speed change and the impact of the chain link engaging the sprocket, which will reduce the chain's carrying capacity and life.

[0016] 3. Not wear-resistant

In actual use, the pin shaft of the roller chain is extremely easy to wear and tear, resulting in longer chain links, which can easily cause tooth skipping or chain detachment, which seriously affects the service life of the chain

[0017] 4. Strong polygon effect

[0028] 2. Difficulty in mechanized mass production

Due to the large number of layers of the inner chain plate and the staggered arrangement, as well as the clearance fit between the inner chain plate and the long and short pins, most Hy-Vo toothed chains can only be manufactured by hand, and mass production is difficult.

[0029] 3. High manufacturing cost

Due to the above two reasons, although the Hy-Vo toothed chain overcomes the shortcomings of the traditional toothed chain such as non-wear resistance and easy elongation, it cannot be widely popular due to the high cost.

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