Patent ID: 7401765
Filing Date: 2008-07-22
Classification: B66D,Y10T

Abstract:
1. A winching and drawing machine comprising: a pressure receiving member mounted on a drive shaft; two brake plates, contiguous to said pressure receiving member, mounted on said drive shaft; a pawl wheel between said two brake plates; a drive member screwed onto said drive shaft to come into pressure contact with, and separate from, said two brake plates; a load sheave; a load gear; two frames that support said load sheave; a gear cover on one of said two frames and covering said load gear; a brake cover on the other of said two frames and covering said two brake plates; and spacers between said gear cover and said brake cover to abut said two frames, with one of said spacers having a spring wound portion on which a spring is mounted, a pawl mount portion on which is mounted a reverse-rotation preventive pawl that is to be biased by said spring, and a restriction member between said spring wound portion and said pawl mount portion to restrict movement of said spring toward said reverse-rotation preventive pawl, wherein one end of said spring is latched onto one of said two frames, and another end of said spring is latched onto said reverse-rotation preventive pawl, and wherein rotation of said drive member is to be transmitted, via said two brake plates, reduction gears, and said load gear, to said load sheave so as to rotate said load sheave.