RU62044U1 - DRIVE MILLING DRIVE - Google Patents

Abstract

A drive of a rolling mill for producing a shuttering profile by cold reduction from a hollow billet is proposed, containing a number of individual drives for each block of the mill stands, each of which contains an individual source of torque, a gearbox and a mechanism for distributing torque to the stands, in which the distribution mechanism is gear and equipped with an odd number of output shafts, while the middle output shaft is equipped with a drive sprocket and is connected to symmetrically located driven output Alami through idler gears, wherein the actuator of the rolling mill is provided with four individual actuators, and the dispensing mechanism is provided with five output shafts and adapted reduction factor equal to unity. Using the proposed drive of the rolling mill allows you to optimize the number of individual sources of torque, simplify the design and tuning of the mill, expand the technological capabilities of the mill by ensuring the transfer of the rolling mill from the "medium" category to the "heavy" category, i.e. roll billets without increasing the total capacity of the mill, with a thickness of up to 3.5 ... 4.5 mm. Independent claims - 1, figures - 2.

Description

The invention relates to the field of metal forming, in particular to rolling production and can be used in the construction of rolling mills to obtain formwork steel profiles from welded pipe billets by cold flawless reduction.

Known rolling mill (RU No. 2055663 C1, MKI B 21 V 35/00, publ. 10.03.1996 Bull. No. 7), comprising a series of sequentially installed rolling stands and a common drive in the form of two transmission shafts parallel to the axis of the rental and connected to the stands by gears and couplings.

The disadvantages of the known rolling mill are the complexity of the kinematic scheme and control of the transmission of torque to the stands and the large required power and, as a result, its dimensions of a single source of torque - an electric motor.

The closest in technical essence to the claimed object analogue (prototype) is a rolling mill (RU No. 2102165 C1, MKI V 21 V 35/02, publ. 01.20.1998 Bull. No. 2), containing cage modules installed in series in the rolling line, drive work rolls in the form of a series of gear reducers associated with the engine, connected to two pairs of mill work rolls.

The disadvantages of the known rolling mill are a large number of individual drives in the case of multi-stand mills, the complexity and reduced reliability of the rolling process control.

The task to which the utility model is directed is

the elimination of the above disadvantages, namely: optimizing the number of individual sources of torque, simplifying the design and tuning of the mill, expanding the technological capabilities of the mill by ensuring the transfer of the rolling mill from the "medium" category to the "heavy" category.

These problems are solved in a drive mill drive claimed to be in accordance with a utility model for producing a shuttering profile by cold reduction from a hollow billet containing a number of individual drives for each block of the mill stands, each of which contains an individual source of torque, a gearbox and a mechanism for distributing torque to the stands in which the distribution mechanism is made gear and is equipped with an odd number of output shafts, while the middle output shaft is equipped with a drive sprocket and is connected located symmetrically driven output shafts through idler gears, wherein the actuator of the rolling mill is provided with four individual actuators, and the dispensing mechanism is provided with five output shafts and adapted reduction factor equal to unity.

The essence of the utility model is that the implementation of the gear distribution mechanism with an odd number of output shafts, of which the middle one is equipped with a drive sprocket and connected to symmetrically located driven output shafts by means of spurious gears, solves the problem of design optimization in terms of manufacturability, ease of installation and maintenance, reduces the load on the drive drive elements, which ultimately makes it possible to transfer the rolling mill from the "medium" category to the "heavy" category, etc. to wrap blanks without increasing the total capacity of the mill, with a thickness of up to 3.5 ... 4.5 mm.

The division of the drive into four individual drives for servicing a block of stands of five pieces is the most optimal for the technological process of rolling and obtaining a complex profile from a pipe with a wall thickness in a wide range up to 4.5 mm.

The applicant does not know the drive of the rolling mill to obtain a profile by cold reduction from a hollow billet with the specified set of essential features, which confirms the compliance of the claimed utility model with the patentability criterion of "novelty".

The proposed utility model is illustrated by drawings, where

Figure 1 shows a General view of the drive of the rolling mill in plan,

Figure 2 - section aa of figure 1.

The drive of the rolling mill 1 to obtain a shuttering profile by cold reduction from a hollow billet contains an individual drive 2 for each of the blocks of the stands of the rolling mill (not shown in the drawing), which includes an individual source of torque 3 (electric motor), gearbox 4 and distribution mechanism 5 torque on the stands. The distribution mechanism 5 is made of gear and contains five output shafts, which are equipped with gears 6, while the middle drive output shaft 7 is equipped with a drive sprocket 8 and is connected to symmetrically arranged driven output shafts 9 by means of spurious gears 10. Gears 6 and 10 are made with the same number teeth of one module. The distribution mechanism 5 is made in a single housing 11. Four individual drives 2 are mounted on the platform 12.

The drive of the rolling mill is operated as part of a multi-stand (20 stands) rolling mill used to produce the formwork profile by cold reduction from industrial

assimilated pipe.

Using the proposed drive of the rolling mill allows you to optimize the number of individual sources of torque, simplify the design and tuning of the mill, expand the technological capabilities of the mill by ensuring the transfer of the rolling mill from the "medium" category to the "heavy" category, i.e. roll billets without increasing the total capacity of the mill, with a thickness of up to 3.5 ... 4.5 mm.

Claims (4)

1. The drive of the rolling mill to obtain the shuttering profile by cold reduction from a hollow billet, containing a number of individual drives based on each block of the mill stands, each of which contains an individual source of torque, a gearbox and a mechanism for distributing torque to the stands, characterized in that the mechanism distribution is made gear and is equipped with an odd number of output shafts, while the average output shaft is equipped with a drive sprocket and is connected with symmetrically located driven output alami through spurious gears. 2. The drive of the rolling mill according to claim 1, characterized in that the drive is equipped with four individual drives. 3. The drive of the rolling mill according to claim 1, characterized in that the distribution mechanism is equipped with five output shafts. 4. The drive of the rolling mill according to claim 3, characterized in that the distribution mechanism is made with a reduction ratio of unity.