SU1159667A1 - Stand actuator of tube cold rolling mill - Google Patents

Abstract

PRIYUD millstands COLD ROLLING PIPES comprising connecting rods, cranks of parallel arranged drive shafts and tsentraln1y, binding of the gear pair of additional connecting rods and is pivotally connected thereto slides uravnovepshvamschie about tlichayuschiys that, with increasing chain drive reliability and its durability in work, it is equipped with eccentrics with counterweight mounted on the central shaft on opposite sides of a gear wheel, made with chevron cutting and equipped with a counterweight, with eccentric gear acheny additional connecting rods and cranks placed on them.

Description

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The invention relates to rolling production, and more specifically to drives for stands of cold-rolling mill mills, and can be used in cold-rolling mills with a movable working stand,

The drive of the stand of the cold rolling mill tube contains a lever pivotally connected to each of the stands of the stand, its shaft of rotation, a shaft rotating from the drive, on which an eccentric is installed in series with the angular displacement of eccentricities, their heads are balanced and the weight is 1 J.

The drive has additional, pivotally connecting ends of the rods with a pivot shaft and a balancing mass shaft, while the yr Iy displacement of eccentricities is 180 °. In this drive, the eccentrics through the connecting rods swing the arms of the cage and the balance balancing gates, and the eccentrics will get the dials, and the eccentrics will not be a part of the dial. levers, which causes a double increase in the force exerted by the eccentuics to accomplish pepeznoy work. This force is transmitted to the drive housing, which reduces its reliability and durability.

The closest to the invention to the technical essence is a drive comprising cranks, their cranks, parallelly located drive and central shafts, connecting their toothed pair, additional connecting rods and balancing sliders C2 hinged with them.

A disadvantage of the known drive of the working stand of the cold rolling mill tube is that the inertial alternating forces from the stand, which at high speeds (more than 100 dp / min) significantly exceed the rolling forces, are perceived by fasteners and gearing that ensures reliable operation of the mill due to wear of parts

The aim of the invention is to increase the reliability of the drive and its durability in operation. .

The goal is achieved by the fact that the drive of a summer cold rolling mill tube containing connecting rods, their cranks, parallelly located drive and central shafts, connects a tfx gear pair, additional-f

Bearing rods and balancing pens that are pivotally connected to them are equipped with eccentrics with a counterweight mounted on a central shaft on opposite sides of a gear wheel, made with shvronronnaya cutting and fitted with a counterweight, while the eccentrics are grabbed by additional rods and cranks placed on them.

Such a constructive implementation of the drive of the cold rolling mill stand of the tube makes it possible to balance inertial forces and moments. The counterweights during the rotation of the central shaft create a centrifugal force that balances the forces of inertia from the balancing mass and from the working stand, which reduces the force acting on the foundation with. drive side. ;

FIG. Figure 1 shows the drive for moving the stand of the cold rolling mill mill, a general view; in FIG. 2, section A-A in FIG. Ij in FIG. 3 section bb in fig. 1-, FIG. 4 shows a section B-B in FIG. t.

The drive of the working cold rolling mill tube includes a housing 1, in which the bearings 2 are fitted with a drive shaft 3 with chevron gear 4, a central shaft 5 with a chevron wheel 6 having a counterweight 7 in the form of a thickened part located on this shaft on different sides from the wheel eccentrics 8 with counterweights 9 and cranks 10, surrounding eccentrics through rolling bearings 11 additional rods 12, balancing sliders 13 connected to edims, rods 14 mounted on cranks connecting the central shaft with the working shaft Tew.

The additional connecting rods 12 connect the central shaft with the balancing slide 13 via the bearings 15 and the pin 16. The balance sliders move in the direction of the ball. Wiring is installed to pass the rolled pipe through the drive.

The device works in the following way.

The drive shaft 3 rotates from the electric motor through chevron gears 4 and wheel 6 rotates the central shaft 5 with eccentrics 8 and cranks 10, which communicate 3 through connecting rods 14 and additional connecting rods 12 reciprocating the working stand and balancing slide 13, Working The cage and uranium-hanging creepers move in mutually perpendicular directions, which ensures the balance of their moments from inertial forces, as a result the moment on the drive shaft will be close to zero. The counterweights 9 and 7, when the central shaft rotates, create a centrifugal force that balances the inertia forces from the balancing mass of the slide 13 and from the working stand 7. 4 which reduces the force acting on the foundation on the drive side to a value close to zero. The sealing cuffs between the eccentrics and the cranks allow centralized feeding: liquid lubricant to the actuator, which additionally increases the reliability and durability of its components. The proposed design of the drive for moving the stand of the cold rolling mill tube in comparison with the known ones makes it possible to increase its reliability and durability, and to reduce the manufacturing cost.

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Claims (1)

DRIVE COLES OF THE COOLING TUBE MILL, containing connecting rods; their cranks, parallel to the drive shaft and the central shaft, connecting their gear pair, additional connecting rods and balancing sliders pivotally connected to them, characterized in that, in order to increase the reliability of the drive and its durability in operation, it is equipped with eccentrics with a counterweight mounted on the central shaft on opposite sides of the gear wheel, made with chevron cutting and equipped with a counterweight, while the eccentrics are grasped by additional connecting rods and cranks are placed on them. > 1159667 2