SU458352A1 - Pilger mill roll drive - Google Patents

Description

one

Drivers of pilger rolls for hot rolling of tubes with a converter of uniform rotation into uneven, and a gear stand are known. One of the steps of the transducer is made with elliptical gears.

The proposed drive is characterized in that the rotational transducer is made in the form of a hinged multi-speed mechanism, the driving shaft of which is connected to the motor shaft and is located peso-presso with the driven shaft connected to the input shaft of the gear cage.

This makes it possible to continuously adjust the amount of non-uniform rotation of the rolls over the rolling cycle.

Hinged multi-link mechanism can be performed by a crank-and-crank. In this case, its crank is connected to the engine shaft and, through a slider, is connected with the slide on the input shaft of the gear stand. The latter is made movable in the direction perpendicular to the axis of rotation of the rolls.

In order to continuously adjust both the magnitude and nature of the uneven rotation of the rolls between the engine crank and the gear stand shaft, you can install an intermediate shaft on the movable supports, on the side facing the engine, on the side of the gear stand, the crank.

To simplify the design, the articulated multi-link mechanism may consist of two cranks with a common connecting rod, one of which is connected to the engine shaft and the other to the shaft of the movable gear stand.

FIG. 1 shows a general view of the drive of the work rolls with a crank-and-throttle multi-link mechanism with a section along A-A; in fig. 2 - a general view of the drive with a two-half-fold-kulisny mechanism with cuts B & B and B-C; in fig. 3 - a general view of the drive with a crank multi-link mechanism with a slit along the GG.

The motor 1 is connected to a converter of uniform rotation into an uneven one, made in the form of a hinged multi-link mechanism 2, installed in front of the gear stand 3, which is connected to the work rolls 5 via universal spindles 4.

For a stepless change in the uneven rotation of the rolls, the articulated multi-link mechanism is made using a crank-and-crank link. It consists of a crank 6 connected to the shaft 7 of the engine, and the hinge 8 hinged on it, which is located in the groove of the link 9. The latter is fixed on a non-axially located relative to the shaft

motor input shaft 10 of the gear stand, which in this case is made stationary in the direction perpendicular to the axis of rotation of the rolls.

To change not only the magnitude, but also the nature of the uneven rotation of the rolls in the kinematic chain of the hinged multilink between the crank 6 and the link 9, the crank 13 is connected to the bearings moving in the direction of the rolls perpendicular to the rolls of the shaft 12. At one end of this shaft there is a crank 13 connected through a slide 14 with a slide on the input shaft of the gear stand, at the other end of the movable intermediate shaft, a link 15 is mounted, through a slide 16 connected to a crank connected to the engine shaft. With such a two-crank-rocker mechanism, the cranks can be made with different radii and different lengths.

To increase reliability and simplify the design, the articulated multi-link mechanism can be formed by two non-axially located cranks 17 and 18, which are connected by a connecting rod 19. One of the cranks is mounted on the shaft of the movable gear stand, and the other is connected to the engine shaft.

The drive works as follows.

The rotation of the engine is transmitted to crank 6 or 17, which is connected to shaft 7, which by means of a slider 8 or connecting rod 19 with a variable angular speed per revolution draws rotational movement to link 9 or crank 18 connected to input shaft 10 of gear cage 3. Then rotation is transmitted through the gear stand and universal spindles 4, which allow the transfer of torque between the displaced shafts. The degree of uneven rotation of the rolls is changed by moving the gear stand 3 together with link 9 or crank 18 from a coaxial position with crank shaft 6 or 17.

If the drive is equipped with a two-crank-link mechanism, the rotation of the engine 1 is transmitted to the crank 6, which is connected to the shaft 7, which by means of a variable angular speed slide 16 carries the rotational motion 15 connected to the intermediate shaft 12 through rotation 13 mounted on the other end the shaft, and the slider 14, the rotation is transmitted to the slide 9 and the shaft 10 of the gear stand, which transmits an uneven rotation to the work rolls. The degree of uneven rotation of the rolls is changed in this case by moving the intermediate shaft 12 from the coaxial position with the motor shaft and the gear stand shaft.

Subject invention

Claims (4)

1. Drive of pilger mill rolls, including a motor, a converter of uniform rotation into an uneven and gear cage, characterized in that, in order to continuously adjust the amount of uneven rotation of the rolls during the rolling cycle, the converter of rotation is made in the form of a hinged multi-link mechanism, the driving shaft of which is is engaged with the engine shaft and is located non-aligned with the shaft of the driven member connected to the input shaft of the gear stand. 2. The actuator according to claim 1, characterized in that the articulated multi-link mechanism is made by means of a crank-and-crank link, its crank connected to the motor shaft and connected via a slide to a slide mounted on the input shaft of the gear cage, which is made movable in the direction perpendicular to the axis of rotation of the rolls. 3. Drive on PP. 1 and 2, characterized in that, in order to continuously control both the magnitude and the nature of the uneven rotation of the rolls, between the crank of the engine shaft and the gear slide of the gear stand shaft is mounted on mobile supports on the side facing the engine, slide, and on the side of the gear cage crank. 4. The drive according to claim 1, wherein that, in order to simplify the design, the articulated multi-link mechanism is formed by two cranks with a common connecting rod, one of which is connected to the engine shaft and the other to the shaft of the movable gear stand. eight Variable PuS.J feE Jr -lS / fT 5-5 73 Variable S 2 72 75S-8 fjepef ghhoe 15 sixteen ig.2 18 U ig. 3