WINCH Russian patent published in 2019 - IPC B66D1/48 B66D1/54 

FIELD: lifting devices.

SUBSTANCE: invention relates to lifting device winches. Winch contains electric motor (2) connected to gearbox (3) and housing (3c) covering them, containing receiving chamber (3d), and rotary encoder (4) for the speed of the drive shaft of gearbox (3) containing disk (4A) with slots and scanning sensor (4b). Disk is made flat and round and has many slots, located in a circle near the edge of the disk sequentially one after the other at the same distance from each other. Scanning sensor is installed so that it has the ability to scan the movement of the slots and, at the same time, the disk and the scanning sensor are mutually arranged in such a way that the scanning sensor has the ability to read signals in the axial direction. Housing (3c) of gearbox (3) has wall (3e) with recess (3h), which has additional channel (11), into which scanning sensor (4b) is inserted at its mounting location, and disk (4a) scanned by it is mounted on the drive shaft of gearbox (3).

EFFECT: invention allows to reduce the size in the radial direction and simplify access to the scanning sensor.

24 cl, 2 dwg