SU115845A1 - Device for automatic reversing of cable or chain winches - Google Patents

Description

For the reversal of cable or chain winches with pneumatic electric motors, various automatic devices are used when operating coal saws or planes on a steep drop.

The described device provides trouble-free operation and improved winch performance. This is achieved by the fact that the device is made with a drive in the form of a deflecting unit, which is rotated by a continuously tensioned cable, or in a chain sprocket, or by a rotating chain.

FIG. 1 and 2 is a diagram of the proposed device.

A rope is fastened on the drum / winch (Fig. 1), which bends around the angular OPEN BLOCK 2 and connects to the controlled gear 3 (struga, saw, etc.). The second rope is drawn to the opposite side of the mask 3, it goes around the bypass block 4, the corner block 5 and is attached to the drum 6 of the winch. The rope attached to the drum / is continuously pulled at the expense of the weight of the machine 3, but therefore the diverting unit 2 is used to switch the spool of the winch-control system.

From block 2 (Fig. 2), through a safety clutch 7 and a bevel gear 8, a screw 9 is rotated, on which two nuts are fitted with leads W and //. When the screw 9 is rotated, the nuts with the leads / (/ and // are shifted and at a certain moment switch the lever 12 of the slide valve 13 of the pneumatic drive engine of the winch. As a result, the winch is reversed and the mask 3 starts to move in the opposite direction.

The position of the stop points of the mashina relative to the drifts is adjusted by changing the position of the nuts with leads / O and 11, relative to the levers 12 of the reverse slide valve. A similar fertilization is made by koi. circuit breakers for electrically operated winches.

In the case of using valuable winches, an asterisk is used instead of a pulley, and instead of a rope, a chain is used.