SU91182A1 - Stipper mechanism - Google Patents

Description

The use of cranes with a stripper mechanism in the metallurgical industry is well known.

The proposed stripper mechanism is characterized by the use of a pumpless hydraulic drive with a filler in it, which improves productivity and simplifies the design of the mechanism. To create the necessary effort for stripping ingots, the dog of the suspension part of the stripper mechanism is used.

The drawing schematically shows the stripper mechanism.

Part of the mechanism is suspended on the ropes / attached to the drums 2 and through blocks 5 to the suspended part of the mechanism having two hydraulic pressure cylinders 4 and one working cylinder 5 on which the axes of the large tongs 6 are fixed.

The working cylinder rod 7 has an annular protrusion 8 for holding small pincers 9 guides. Free-running drums 10 are wound with ropes at one end of which a yoke 11 is suspended, abutting against the protrusion 8 of the rod. For tensioning the ropes, counterweights 12 and 13 were used. For filling the entire system with liquid, fillers 14 were installed on the suspended part of the stripper mechanism, in which an air cushion maintains a pressure of 5-6 atm.

When the ingots are undressed at the beginning of work, the upper part of the working cylinder 5 communicates with the filler 14 and the lower part of the cylinder 5. In this case, due to the difference in support surfaces of the rods 7, it will move downwards. Next, the entire suspended part of the stripper mechanism is lowered from the electric motor. The tongs 6 then close, capturing the mold. The valve connecting the upper and lower parts of the working cylinder 5 with the filler 14 overlaps and opens the valve connecting the pressure cylinders 4 to the upper cavity of the working cylinder 5 and the brush 7 with high pressure transmitted from the pressure cylinders 4 into the cylinder 5, presses on the ingot .

At the same time, the wholly suspended part of the stripper mechanism rises together with the tongs 6, and the mold is removed from the ingot. After that, the valve is closed, which informs the pressure cylinders 4 with the upper part of the working cylinder, and only the mold rise occurs.

jYo 91182-2 -

When lowering the mold, the upper and lower parts of the working cylinder are in communication with the filler 14 and the rod 7 takes up the initial polishing. After this, the valves connecting the upper and lower parts of the cylinder 5 with the filler overlap and open the valves connecting the pressure cylinders 4 with the filling 14. Thus, the entire movable part of the stripper mechanism is suspended on the ropes fixed on the yoke 11, resulting in plungers Nano cylinders 4 begin to descend to the lowest position.

After opening the tongs, the valve is ready in the usual order to remove the next mold.

Subject invention

Claims (4)

1. A stripper mechanism, characterized in that, in order to increase productivity and simplify the design of the mechanism, a pump-less hydraulic drive with a filler is used. 2. A device according to claim 1, characterized in that, in order to create the necessary effort for stripping ingots, the weight of the suspension part of the stripper mechanism and the drive of the lifting mechanism are used. 3. The device according to p. 1 and 2, characterized in that part of the stripper mechanism is suspended on ropes fixed on drums and through blocks on the hanging part of the mechanism on which the filler is located, two hydraulic pressure cylinders and one working cylinder having fastenings for the axis of large tongs. 4. The device according to claims 1, 2 and 3, characterized in that, in order to hold small pincers, to it, the working cylinder rod has an annular protrusion against which the traverse rests, suspended to the drums freely seated on the shaft, through which the ropes pass, holding the counterweights .