| 摘要 |
<p>A winching and drawing machine includes a pressure receiving member 2 mounted on a drive shaft 1 a pair of brake plates 3 contiguous to the pressure receiving member to be mounted on the drive shaft, a pawl wheel 4 arranged between the brake plates 3, and a drive member 5 screwed on the drive shaft 1 to come into pressure contact with and separate from the brake plates 3, wherein rotation of the drive member is transmitted via the brake plates, reduction gears, and a load gear 12 to a load sheave 10 to rotate the same, wherein the winching and drawing machine further includes a pair of frames 17a, 17b that support the load sheave 10, a gear cover 18 provided on one of the frames 17b to cover the load gear 12, a brake cover 19 provided on the other of the frames 17a to cover brake means, spacers 15a, 15b provided between the gear cover 18 and the brake cover 19 to abut against the frames 17a, 17b for positioning, a spring 20 mounted on one of the spacers 15a, a reverse-rotation preventive pawl 21 biased by the spring 20, wherein the spacer 15a comprises a spring wound portion 15e, on which the spring 20 is mounted, a pawl mount portion 15i, on which the reverse-rotation preventive pawl 21 is mounted, and a restriction member 15h; 28a; 21 a provided between the spring wound portion 15e and the pawl mount portion 15i to restrict movement of the spring 20 toward the reverse-rotation preventive pawl 21, and wherein one end 20a of the spring 20 is latched on the frame 17b and the other end 20b of the spring 20 is latched on the pawl 21.</p> |
