How to select reducer coupling
Introduction:
There are many kinds of reducer, according to the transmission type can be divided into gear reducer, worm reducer and planetary reducer and their combined reducer. The reducer is an independent closed transmission device between the prime mover and the working machine, which is used to reduce the speed and increase the torque to meet the needs of the work. At present, the main parameters of the reducer such as center distance, transmission ratio, modulus, tooth width coefficient have been standardized.
Only one link is available when the reducer is selected. The coupling can be selected according to the following points:
1. According to the size of the transferred load and the speed of the shaft, due to manufacturing, installation, load deformation and temperature change, it is difficult to keep the two shafts strictly and accurately aligned after installation and adjustment, and there is a certain degree of displacement and deflection in the X and Y directions. When the radial displacement is large, the slider coupling can be selected, the angular displacement is large or the joint of two axes can be selected universal coupling, etc. Flexible coupling should be selected when the two axes have large additional relative displacement in the working process.
2. According to the working speed of the coupling and the size of the centrifugal force caused to choose the type of coupling, for high-speed transmission shaft, should choose the coupling with high balance accuracy, such as diaphragm coupling, rather than choose the slider coupling with eccentric.
3. When the coupling is selected for serious impact load or the transmission system requiring the elimination of torsional vibration of shafting, it can be selected with high elasticity and good shock absorption buffer and superior offset compensation performance between shafts, suitable for impact occasions such as tire coupling.
4. Suitable couplings can be selected according to their manufacture, installation, maintenance and cost. Under the premise of satisfying the performance, the coupling which is convenient to assemble and disassemble, simple to maintain and low cost should be selected. For example, the rigid coupling is not only simple in structure, but also convenient in assembly and disassembly. It can be used for the transmission shaft with low speed and large rigidity. General non-metallic elastic component coupling, such as elastic sleeve pin coupling, elastic pin coupling, plum shaped elastic coupling, because of its good comprehensive ability, so widely used in the general medium and small power transmission system.
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