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Abstract

The lifting machine is one of the large-scale regular machinery ,

used in the rise or fall and transport of various kinds of heavy objects mainly. The small-scale lifting machine plays an important role too in daily life. The lifting machine is made up of motor , decelerator and three parts of cylinder , is linked by the shaft coupling respectively between every part. The motor is the power source , the decelerator is a transmission, the cylinder , in order to carry out and control some, among them the design of the decelerator is the most important. It adopts the worm the accurate parallel ring developed . This kind of worm does not need to repair the shape to reach

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the worm the wide ring directly and repair the result of the shape , and is exposed to the line and relative motion tempo direction contained angle stability instantaneously , is close to 90 degrees; Carry the hobbing cutter and process with shovels but succeed the teeth of a cogwheel of snail, so contact the surface greatly the teeth of a cogwheel of snail, quality is steady. Participating in several more than gear wheel teeth that clench the teeth at the same time, there is no spine line the teeth of a cogwheel of snail , will not be produced and interfered while transmitting sports. So, this kind of worm transmission bears the weight of the power largly, move and press the oil to contain the stability transmission , low , balanced temperature low grade characteristic of noise. Have good practical

value and economic worth.

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