Coal mill general power is larger, the diameter of axle of the motor and spindle diameter of axle are coarser, choose direct instrumentation type hydraulic coupler is very difficult to install, recommended to choose the following two forms of limited moment type hydraulic coupler. 1. Easy to...
Coal mill general power is larger, the diameter of axle of the motor and spindle diameter of axle are coarser, choose direct instrumentation type hydraulic coupler is very difficult to install, recommended to choose the following two forms of limited moment type hydraulic coupler.
1. Easy to disassemble the torque type hydraulic coupling, characterized by the input and output terminals with a half coupling (or diaphragm coupling, gear coupling).
2, with fission disassembling the torque-limiting type hydraulic coupling, its characteristic is the input and output with each one and a half coupling, install and remove when they can be removed from the coupling ontology, separate installation with heating method to the shaft of the motor and reducer shaft.
3, choose slow down type hydraulic coupler drive device, as a result of the coal mill motor speed much lower, so the chosen of the specifications of the coupling is larger, heavy weight and large moment of inertia, high price, installation is convenient, operation reliability is poor.Abroad mostly choose slow down mill type hydraulic coupling transmission device, the device has a pair of or two pairs of gear speed down, can double the speed of the motor, it can greatly reduce the specifications of the coupling, and through the hydraulic coupling transmission gear speed down, can achieve the requirement of the coal mill input speed.This kind of transmission device is fixed box body type, installation is convenient, the operation is stable, the advantage is many.It's just a slightly longer axis and a slightly higher price.But from the general view, it is better to choose the hydraulic coupling transmission device than the limited moment type hydraulic coupling.
4, choose two bearing type limited moment type hydraulic coupling, the coupling is not lifting in (or gear reducer) on the spindle motor and mills, but its own supporting device, are connected to the machine motor or work through both ends of coupling.Its advantages are convenient installation, stable operation, reliable vibration, low vibration and low failure rate;The disadvantage is that the axial size is slightly longer and the price is slightly higher, and the transmission power of double cavity double-supported moment type hydraulic coupling is approximately equal to that of single cavity coupler, which is more suitable for the coal mill.
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