SU774044A1 - Individual gearless drive for horizontal workrolls - Google Patents

Abstract

INdavIDUALNY gearless drive GORIZONTALYSHH rolling rolls disposed in the same vertical plane, preferably for broadband and crimp rolling mills contain | Kaschy motors, two transmissions, each consisting of at least two universal itindeley connected sharnY1zho with the intermediate shaft and with the rolling roll and an electric motor, and both transmissions are turned relative to a certain plane, so that the angles of distortions of adjacent hinges are equal in pairs to each other, about each other, and and with the fact that, in order to ensure uniform angular velocity of rotation of rolled valksh, regardless of the change in their working position in the vertical plane with a minimum skew angle of the hinges of the spindles attached to the rolling rolls, and reducing the length of transmissions, the upper and lower rolling rolls rolled in the plan relative to the vertical plane of the rolls, the intermediate shafts being installed horizontally at the level of the axes of the rolled stock (rolls, preferably in the position of the scientific research institute in the middle of the tim worker valkszh position in the vertical plane.

Description

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II The invention relates to the processing of metals by pressure, in particular, the working of stands of crimping and wide-strip rolling mills. An individual gearless drive of horizontal mill rolls located in one vertical plane is known, advantageously for wideband and crimping rolls, mills containing electric motors, two transmissions, each with at least two universal spindles connected by hinges. with an intermediate shaft, as well as with a rolling roller and an electric motor, both transmissions being turned relative to a certain plane, that the angles of the distortions of the adjacent hinges are equal in pairs to each other Ij. The purpose of the invention is to provide (uniform angular speed of rolling rolls irrespective of the change in their working positions in the vertical plane at the minimum tilt angle of the hinge spindles attached to rolling rolls M1 and reducing the length of the transmission. This is achieved by the transmission of the upper and lower rolling mills the coils are rotated in plan relative to the vertical plane of the rolls, with the intermediate shafts mounted horizontally at the level of the axes of the rolls, preferably in the position of the middle of the The change in the working position of the rolls in the vertical plane is shown in Figure 1. Figure 1 shows the proposed drive, front view; Figure 2, the same, top view; Figure 3, the same, view from the side of the electric motors. The rolls consist of identical links and differ from one another only in that they are turned in opposite directions in the plan, preferably symmetrically with respect to the vertically plane in which the longitudinal axes of both rolls are located. Each drive contains an electric motor 1, pivot 2, universal spindles 3, intermediate shaft 4 mounted in support column 5, hinge 6 ,, universal spindle 7 and hinge 8, with; shaving to the rolling mill 9. A feature of wide-strip mills is that the torques transmitted by the spindles in the dimensions limited by the barrels of rolling rollers are 2-3 times higher than other types of rolling mills. In such heavy operating modes, only spindles with sliding friction hinges (for example, with bronze Ivsh inserts), characterized by the highest load method, can be used. Under extreme conditions, the performance of such spindles is determined by the skew angle of the hinges, therefore it is necessary to ensure minimum the values of these angles. To do this, the intermediate shafts are installed at different levels in horizontal planes at a distance equal to the nominal diameter of the rolls rolls, which ensures a zero bias in the vertical plane of the hinges of the spindles adjacent to the rolls (without taking into account the grinding of the rolls), and the symmetrical turning of these shafts at an angle of fbf equal to 2 o1, it allows, with a minimum value of-and a practically acceptable length of spindle 7, to increase the size and load capacity of the hinge 6. At the same time, the intermediate shaft turns in the horizontal plane, it creates favorable conditions for an even more significant increase in the size of the hinges 2 of the spindles 3. This allows the use of spindles with hinges on rolling bearings, allowing large skew angles, which in turn leads to a decrease in the length of these spindles, and consequently, the overall length transmissions. In addition, hinges on rolling bearings are preferable because they work with minimal gaps in contrast to the sliding friction hinges, which is especially important for drives operating in reversible mode, where significant gaps in the hinges lead to an increase in dynamic loads. . The constancy of the angular velocity during rolling mill rolls in the proposed drive is provided by the corresponding angles ratios in the horizontal planes. J if / a + 2y-2 (When using the proposed drive, the angular velocity of rotation of the rolls into alcoves is ensured regardless of the change in their position in the vertical plane. The skewed angles of the spindle hinges adjacent to the rolls are as low as possible and exceed 1.5-2. Transmissions of the drives of the upper and lower rolls have the same length and, consequently, the same rigidity. The electric motors are protected from axial loads arising during the rolling process, as well as in emergency situations. catch servicing of electric motors.

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Claims (1)

INDIVIDUAL DRESS-FREE DRIVE OF HORIZONTAL ROLLING ROLLS located in one in the vertical plane, mainly for broadband and crimping rolling mills, containing electric motors, two transmissions, each consisting of at least two universal spindles, pivotally connected with an intermediate shaft, and and an electric motor, and both transmissions are deployed relative to a certain plane, so that the skew angles of adjacent hinges are pairwise equal - to each other, m, that, in order to ensure a uniform angular velocity of rotation of the rolling rolls regardless of the change in their working position in the vertical plane with a minimum <angle of misalignment of the spindle hinges attached to the rolling rolls, and reducing the length of the transmissions, transmissions of the upper and lower rolling rolls are deployed in plan with respect to the vertical plane of the rolls, and the intermediate shafts are mounted horizontally at the level of the axes of the rolling rolls, preferably in the middle position of the working range. the position of the rolls in the vertical plane. m N About bU hU