Comparison of several most popular mechanical tran

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Comparison of several mechanical transmission forms

characteristics of several mechanical transmission forms:

transmission breaking force dynamic form main advantages and main disadvantages belt transmission center distance changes widely, can be used for long-distance transmission, stable transmission, low noise, can buffer and absorb vibration, has overload protection function, simple structure, low cost, low installation requirements, sliding, transmission ratio can not be kept constant, and the overall size is large, The service life of the belt is relatively short (usually 3500h ~ 5000h). Due to the friction electrification of the belt, it is not suitable to be used in flammable and explosive places. There is a secondary oil cylinder fixed on the frame at the top of the two clamping claws of the large force chain drive on the shaft and bearing; The first end of the two main oil cylinders is fixed on the movable jaw seat, with a wide range of center distance changes, which can be used for long-distance transmission. It can work reliably under high temperature, oil, acid and other adverse conditions. The force on the shaft and bearing is small. Although the average speed ratio is constant, the instantaneous speed during operation is uneven, with impact, vibration and noise, and low service life (generally 5000h ~ 15000h). The gear transmission has small outline size, high efficiency, and constant transmission ratio, It has a wide range of peripheral speed and power, and is the most widely used. It has high requirements for manufacturing and installation accuracy. It cannot be buffered, has no overload protection effect, and has noise. The worm drive has a compact structure, small overall size, large transmission ratio, constant transmission ratio, and stable transmission. There is no noise that "its components can be transferred to food". It can be made into a self-locking mechanism. The efficiency is low, the transmission power should not be too large, and the medium and high speed requires expensive bronze, High manufacturing accuracy is required, High tool cost

basic characteristics of several mechanical drives:

basic characteristics V-belt drive chain drive cylindrical gear drive worm drive H closed -0.95 ~ 0.970.96 ~ 0.99 self-locking 0.4

non self-locking 0.7 ~ 0.92 open 0.90 ~ 0.960.93 ~ 0.960.94 ~ 0.96 self-locking 0.3

non self-locking 0.6 ~ 0.70 speed v/(m/s) ≤ 25 ~ 30 ≤ 20

(40) ≤ 15 ~ 25 (oblique)teeth)

(200) vs ≤ 15

(vs ≤ 35) speed/(r/min) 10000 5000 10000 30000 power service range ≤ 1000 ≤ 4000 ≤ 50000 ≤ 750 common range ≤ 75 ≤ 100 ≤ 3000 ≤ 50 single stage

(transmission ratio) Imin service value ≤ 15 toothed chain 15

roller chain 10 ≤ 10 ≤ 100 common value 2 ~ 4 ≤ 5 ~ 83 ~ 5 closed 10 ~ 40

open 15 ~ 60 small noise, short service life, medium length, short impact resistance, good difference, medium outline size, large and small relative price 100% note: 1 The value in brackets is the maximum value of 2 V this kind of thing has gradually evolved from the original viewing function to the current application field. S refers to the relative sliding speed (end)

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