RU2254947C2 - Rolling mill manipulator - Google Patents

Abstract

FIELD: rolled stock production, namely manipulators of thick sheet rolling mills.

SUBSTANCE: manipulator includes in front or after rolling stand guiding liners arranged at both sides of rolling axis and secured to tie rods with possibility of motion across rolling axis. Liners are secured to tie rods at lateral gap and they are provided with mechanism for sensing efforts acting along liners. Said mechanism is in the form of mounted in liner eccentric pivots with rollers engaging with guides and mounted stationary along motion direction of liners. Eccentricity value of pivots is less than lateral gap of mounting liners in tie rods. Eccentric pivots with rollers are mounted in liner ends distal relative to stand.

EFFECT: enhanced operational reliability of manipulator.

2 cl, 2 dwg

Description

The invention relates to rolling production and can be used on sections of the working lines of plate mills.

Known manipulators that are installed in front of and behind the working stands of quarto plate mills and which are designed to set peals along the rolling axis. For example, a rack-type manipulator with a hydraulic drive of the Uralmashzavod design is known, containing rods on each side of the roller table, bars are installed on the bars with which the roll moves along the roller table when centered [1]. However, some peals need not only to be installed along the rolling axis, but also to keep them from shifting from the axis during the rolling process.

The disadvantage of these manipulators is that when holding peals along the rolling axis due to the significant forces that occur along the rulers, breakdowns occur in the nodes of the manipulators, leading to long downtimes of the mill.

Closest to the proposed manipulator in technical essence and the achieved result is a finishing four-roll stand manipulator containing rulers, rods on each side of the roller table and a drive, the rods being connected by transverse traverses and moving in vertical roller guides [2].

This manipulator provides increased strength of assemblies and parts in comparison with the manipulator described above due to the fact that the rods move in vertical roller guides. However, the disadvantage of this design is that the vertical roller guides are located in the zone of movement of the rods at a considerable distance from the surface of the rulers, along which forces act while holding the roll along the rolling axis. These forces create a bending moment on the rods of the manipulator, and thereby ultimately this negatively affects the performance of the manipulator. This is especially true when rolling narrow peals, since in this case the bending moment acting on the rods will be greatest due to the maximum shoulder of the force acting along the surface of the rulers.

The objective of the invention is to create a design of the manipulator of increased reliability by protecting the basic parts of the manipulator from the forces acting along the rulers.

The problem is solved in that in the manipulator of the rolling mill in front of or behind the rolling stand, containing guide rails located on both sides of the rolling axis, mounted on rods with the ability to move across the rolling axis, the ruler of the manipulator is mounted on rods with lateral clearance and equipped with a force sensing mechanism, acting along the rulers, made in the form of eccentric axes fixed at the ends of the rulers, remote from the stand, with rollers interacting with guides mounted stationary about in the direction of movement of the rulers, while the eccentricity of the axes is less than the lateral clearance of the fastening of the rulers with the rod, which ensures adjustment of this gap,

The installation of eccentric axes with rollers in the rulers of the manipulator makes it possible to perceive the forces acting along the rulers while holding the rolls along the rolling axis directly by the eccentric axis with rollers with further transfer of this force to the guides built into the roller table frames and the foundation. Thus, the forces acting along the rulers while holding the peals along the rolling axis will not be transferred to the manipulator rods, therefore, the inventive manipulator will have increased strength characteristics.

The essence of the invention is illustrated by drawings.

Figure 1 shows a top view of the manipulator.

Figure 2 - section aa in figure 1 (section along the eccentric axis).

The manipulator includes guiding rulers 1 connected by rods 2 to the drives 3. In this case, the rulers 1 are mounted on the rods 2 with a lateral clearance "y" and can be moved across the rolling axis by the drive 3. On the rulers 1, eccentric mounted on their ends remote from the cage axis 4 with rollers 5, which are mounted to move along the guides 6, built into the roller table 7 in the direction of movement of the rulers 1. The eccentric axes 4 are mounted in the rulers 1 on a conical surface and secured, for example, with wedges 8. Eccentricity "e “less than the gap value” is selected “at” the fastening of the rulers 1 on the rods 2, which allows you to adjust this gap.

When the guiding rulers 1 are operating, at the moment of holding the peals along the rolling axis, forces arise that act along the rulers 1. The arising forces at the moment of holding the peals along the rolling axis through the eccentric axes 4 and the rollers 5 are perceived by the guides 6 integrated into the frames of the rolling table 7, and not transferred to the rods 2 manipulators.

The introduction of the proposed manipulator on the sections of the finishing stands of quarto plate mills, for example, the 2800 mill, will improve the reliability of the manipulators, reduce mill downtime associated with the repair and replacement of parts and components of the manipulators, and, ultimately, increase the productivity of the mill.

Sources of information taken into account

1. Equipment for rolling mills, G. N. Krause, Moscow, 1963, pp. 141-142.

2. Chicherin II, VI Rospasienko Phased reconstruction of plate mill 280, Steel No. 5, 1998, pp. 40-42.

Claims (2)

1. The manipulator of the rolling mill in front of or behind the rolling stand, containing guide bars placed on both sides of the rolling axis, mounted on rods with the ability to move across the rolling axis, characterized in that the manipulator bars are mounted on rods with lateral clearance and equipped with a mechanism for sensing forces acting along the rulers made in the form of eccentric axes fixed in the ruler with rollers interacting with guides installed stationary in the direction of movement of the rulers, while the magnitude of the eccentricity of axes is less than the lateral attachment lines gap wide. 2. The manipulator of the rolling mill according to claim 1, characterized in that the eccentric axes with rollers are installed at the ends of the rulers remote from the stand.

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