| 摘要 |
1. Method to alter the relative level of the cages of a mining hoist winding machine comprising a first drum (2) integral with a drive shaft (4), a second drum (3) idle-mounted on this shaft and a clutch which includes a first component (13) integral in rotation with one of the drums and mounted in such a way that it can be moved axially with respect to the said drums, and a second component (12) integral with the other drum, these two components being fitted with N teeth which can mesh with an angular clearance epsilon by axial displacement of the first component to make the second drum integral in rotation with the first drum, method consisting in freeing the teeth of the first component from those of the second component to uncouple the two drums, the second drum being locked, in rotating at least one of the drums to bring the teeth of one of the said components exactly opposite the spacings between the teeth of the other component and in controlling the axial displacement of the first clutch component to couple the two drums, characterized by the fact that the first drum is made to rotate to bring the cage to the level selected, that the number of pulses generated during the rotation of the first drum by an encoder (23) which is coupled to the latter and generates M x N pulses per drum revolution is counted, M being such as M epsilon > 2 pi/N, the number (M' < M) of pulses which corresponds to the angular shift of the teeth of the two clutch components at the end of the first drum rotation is calculated, that the second drum is rotated in the same direction as the first, which is then locked, while counting the number of pulses generated during this rotation by a second encoder (24) coupled to the second drum and generating M x N pulses per drum revolution, that the rotation of the second drum is stopped when the number of pulses generated by the second encoder is equal to the number of pulses calculated (M') and that the coupling of both drums is controlled. |
