CN211100787U - Roll changing trolley suitable for changing working rolls of strip steel four-roll mill - Google Patents

Abstract

The utility model discloses a roll changing trolley suitable for changing working rolls of a strip steel four-high mill, which comprises two trolley guide rails which are laid on the inner sides of two tracks of the working rolls and are arranged in parallel, wherein the trolley guide rails are provided with a roll changing trolley which can move back and forth along the trolley guide rails, the front end of the roll changing trolley is connected with a cylinder, the rear end of the roll changing trolley is connected with the working rolls to be installed through a tool, and the roll changing trolley is used for moving back and forth under the driving of the cylinder so as to drive the working rolls to move to an appointed position; the roll changing trolley comprises a rotating shaft, wheels are respectively arranged at two ends of the rotating shaft, the edges of the wheels, which are positioned on the inner side of the trolley guide rail, extend outwards to form convex edges, and the convex edges are used for keeping the moving direction of the roll changing trolley when the roll changing trolley moves along the trolley guide rail to prevent the roll changing trolley from deviating; this application is through roll change dolly one end connection working roll, and the cylinder is connected to the other end, and the roll change dolly drives the working roll and removes the assigned position towards the assigned direction under the effect of cylinder, can avoid the working roll to run at the in-process of sideslip.

Description

A roll changing trolley suitable for changing work rolls in a four-high strip mill

【Technical field】

The utility model belongs to the technical field of auxiliary tools for rolling mills, in particular to a roll changing trolley suitable for replacing work rolls in a four-high rolling mill of strip steel.

【Background technique】

When the rolling mill in the rolling mill replaces the work rolls, the crane needs to first hoist the work rolls to the work roll track, and then manually push and pull the work rolls to the designated position, and then replace the work rolls. However, when the crane hoists the work rolls on the work roll track, it often happens that the placement position of the work rolls is slightly offset, so that the position of the work rolls is shifted after the lateral movement, and the crane needs to be re-hoisted and placed in a suitable position. It greatly affects the roll change time and affects the output.

【Content of utility model】

The purpose of the utility model is to provide a roll changing trolley suitable for changing work rolls in a four-high strip mill, so as to solve the problem of inconvenient adjustment when changing work rolls in a four-high strip mill.

The utility model adopts the following technical scheme: a roll changing trolley suitable for replacing work rolls in a four-high strip mill, comprising two trolley guide rails laid on the inner sides of the two tracks of the work rolls and arranged in parallel, and the trolley guide rails are provided with trolley rails that can be moved along the The roller changing trolley moves back and forth. The front end of the roller changing trolley is connected to the cylinder, and the rear end is connected to the work roll to be installed through the tooling. Location;

The roller changing trolley includes a rotating shaft. Wheels are installed at both ends of the rotating shaft. The edges of the wheels located on the inner side of the guide rail of the trolley extend outward to form a convex edge. partial.

Further, a sleeve is also arranged between the wheel and the rotating shaft.

Further, an outer sleeve is also sleeved on the rotating shaft, and the outer sleeve is connected with the power output end of the cylinder.

Further, the tooling is a connecting rod, one end of which is connected to the outer sleeve, and the other end is connected to the work roll.

The beneficial effects of the present invention are as follows: in the embodiment of the present application, one end of the roll-changing trolley is connected to the work roll, and the other end is connected to the cylinder, and the roll-changing trolley drives the work roll to move to a specified position in a specified direction under the action of the cylinder, and is limited by the trolley guide rail. The moving direction of the roll changing trolley is adjusted, so as to prevent the work rolls from running all over during the traverse process, improve the accuracy of the traverse direction when replacing the work rolls, reduce the roll changing time, and improve the productivity.

【Description of drawings】

FIG. 1 is a schematic structural diagram of a roll changing trolley suitable for changing work rolls in a four-high strip mill according to an embodiment of the application.

Among them: 1. Work roll; 2. Tooling; 3. Trolley guide rail; 4. Wheel; 5. Cylinder; 6. Casing.

【Detailed ways】

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

The embodiment of the present application provides a roll changing trolley suitable for replacing work rolls in a four-high strip mill. As shown in FIG. 1 , it includes two trolley guide rails 3 laid on the inner sides of the two tracks of the work roll and arranged in parallel. The trolley guide rails 3 is provided with a roll-changing trolley that can move forward and backward along it. The front end of the roll-changing trolley is connected to the cylinder 5, and the rear end is connected to the work roll 1 to be installed through the tooling 2. The roll-changing trolley is driven by the cylinder 5. Move back and forth to drive the work roll 1 to move to the designated position.

The roller changing trolley includes a rotating shaft. Wheels 4 are installed at both ends of the rotating shaft. The edge of the wheel 4 located on the inner side of the trolley guide rail 4 extends outward to form a convex edge. , to prevent it from deviating.

In the embodiment of the present application, one end of the roller changing trolley is connected to the work rolls, and the other end is connected to the cylinder. Avoid running over the work rolls as they move. In addition, the inner side of the wheel has a convex edge, which can also prevent the wheel 4 from deviating on the guide rail of the trolley, which improves the accuracy of the moving direction of the work roll replacement, reduces the roll changing time, and improves the productivity.

In the embodiment of the present application, a sleeve 6 is also provided between the wheel 4 and the rotating shaft, and the rolling between the wheel 4 and the rotating shaft can be further increased through the sleeve 6, so as to prevent the wheel 4 and the rotating shaft from rusting, resulting in the wheel being unable to rotate. Roll on the trolley rail 3. Moreover, by adding the sleeve 6, the gap between the wheel 4 and the rotating shaft can also be increased, lubricating oil can be applied in the gap, the service life of the trolley can be increased, the operation convenience can be improved, and the degree of freedom of the wheel in the rotation direction can be increased.

In a possible implementation manner of the embodiment of the present application, an outer sleeve is also sleeved on the rotating shaft, and the outer sleeve is connected to the power output end of the cylinder 5 . The outer sleeve is sleeved on the outside of the rotating shaft, and its two ends are respectively close to the two wheels. On the one hand, it can be used as the connecting piece between the cylinder 5 and the work roll 1. partial. Specifically, a convex edge can also be added on the rotating shaft and the inner side of the two wheels to prevent the wheels 4 from deviating to the inner side. In addition, the outer end of the rotating shaft is provided with a pin hole. After the wheel 4 is inserted into the rotating shaft, a pin is inserted into the pin hole to ensure that the wheel does not deviate outward.

In the embodiment of the present application, the tooling 2 is a connecting rod, one end of which is connected to the outer sleeve, and the other end is connected to the work roll. Specifically, the tooling 2 can also be any other shape or structure, and can be other shapes or structures designed by those skilled in the art according to the actual working environment and the requirements of changing rolls, which specifically play the role of force transmission. In any case, various structures can meet the installation requirements.

Claims (4)

1. A roll changing trolley suitable for replacing work rolls in a four-high strip mill, characterized in that it comprises two trolley guide rails (3) laid on the inner side of two tracks of the work roll and arranged in parallel, and the trolley guide rails (3) ) is provided with a roll-changing trolley that can move forward and backward along it, the front end of the roll-changing trolley is connected with the cylinder (5), and the rear end is connected with the work roll (1) to be installed through the tooling (2). The trolley is used to move back and forth under the driving of the cylinder (5) to drive the work roll (1) to move to the designated position; The roller changing trolley comprises a rotating shaft, wheels (4) are respectively installed on both ends of the rotating shaft, and the edge of the wheel (4) located on the inner side of the guide rail (3) of the trolley extends outward to form a convex edge, and the convex edge is used for the When the roller changing trolley moves along the guide rail (3) of the trolley, the moving direction of the roller changing trolley is maintained to prevent it from deviating. 2. A roll changing trolley suitable for changing work rolls in a four-high strip mill according to claim 1, characterized in that a sleeve (6) is further provided between the wheel (4) and the rotating shaft. 3. A roll changing trolley suitable for changing work rolls in a four-high strip mill according to claim 1 or 2, wherein an outer sleeve is also sleeved on the rotating shaft, and the outer sleeve is connected to the The power output end of the cylinder (5) is connected. 4. A roll changing trolley suitable for changing work rolls in a four-high strip mill as claimed in claim 3, wherein the tooling (2) is a connecting rod, one end of which is connected to the outer sleeve, The other end is attached to the work roll.

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