Yancheng XINLAN Precision Machinery Co., Ltd.

The rack and pinion transmission is a widely used transmission mechanism. It can not only convert rotary motion into linear motion, but also convert linear motion into rotary motion, and can be combined with other transmission mechanisms to complete complex functions.

After the high-frequency treatment of the gear, it will happen that the hardness of the tooth surface and the top of the tooth meet the requirements of use, but the hardness of the tooth root cannot reach the quenching hardness.The hardness is lower than the carburizing and quenching treatment.Gear accuracy decreases after high-frequency quenching.When used as high-precision gears, grinding and rack gears are required.

The commonly used elevator on the construction site is a rack and pinion elevator, which can be imagined as a kind of elevator with a rack and pinion function.This kind of elevator has the characteristics of stable performance, heavy load, environmental protection, low investment and quick results.

In the construction of the construction site, the working environment of the manual rack elevator is poor and cannot clean cement, mortar and dust.The gears and racks grind to each other, and the teeth are still in use if they are sharpened. Pay attention.As we all know, the tooth shape should be like a cantilever beam.When worn to a certain size, the gear (or rack) needs to be replaced.

To what extent should I stop using it and replace it with a new one?It can be measured with a 25-50mm common normal micrometer.When the common normal length of the gear is worn from 37.1 mm to less than 35.1 mm (two teeth), a new gear needs to be replaced.When the rack is worn, use a gear tooth caliper to measure. When the tooth thickness is less than 12.56 mm when the tooth thickness is worn from 8 mm to 10.6 mm, the machined rack needs to be replaced.However, many elevators with "old" gears and racks on the construction site are still unusable, and SP rack elevators need to be replaced with new parts.

The drive unit is composed of driving gear, reducer, coupling, plum blossom coupling elastic block and electromagnetic brake motor.The reducer is a plane-enveloped toroidal worm reducer, which has the characteristics of compact structure, high carrying capacity, high mechanical efficiency, long service life, stable and reliable operation, etc.