JPH03210909A - Driving device - Google Patents

Abstract

PURPOSE:To attain followup ability of roll shift by composing a gear reducer of a shaft coupling for transmitting roll driving power of inner and outer jacket members with an expansion body and elastic body, moving in the axial direction and making it flexible in a driving device for rolling mill. CONSTITUTION:On the roll 3 of rolling mill, the shaft coupling 1 for transmitting power with which the power is transmitted by following up the shift in the axial direction and the driving device composed of the gear reducer 2 are provided. Inside the gear reducer 2, the flexible body 9 is made by inserting / connecting the inner jacket member 6 into the outer jacket member 5 movably backwards and forwards and made into such a structure that the flexible body is always pressed against the roll 3 by using the elastic body. In this way, roll shift function can be given to the shaft coupling for transmitting power with a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drive device in a rolling facility, and particularly to a drive device having a function of following roll shifts of a rolling mill.

[Conventional technology]

Conventionally, as described in Japanese Unexamined Patent Publication No. 59-156510, a shaft coupling that transmits power to a rolling mill has a structure in which an inner cylinder member can move forward and backward in an outer cylinder member so that it can automatically follow roll shifts. A built-in expandable body is inserted and connected, and pressure is constantly applied to the roll to eliminate incomplete fitting of the oval part of the roll.

[Problem to be solved by the invention]

The above conventional technology does not take into account that the shaft joint is a floating object, and has the following drawbacks.

That is, as shown in FIG. 2, the constituent parts of the shaft joint are the inner cylinder member 6. Outer cylinder member 5. There are extensible bodies 9, each of which has a gap so that it can move forward and backward. Therefore, the gear will fall down due to its own weight, resulting in what is called a buckling condition.

By rotating this complexly configured shaft joint, unstable elements such as vibration and impact noise will always remain.

The purpose of the present invention is to simplify the structure of a shaft joint, which is a floating object, to make it lightweight, eliminate instability factors, and to make it functionally capable of automatically following roll shifts, similar to the conventional technology. The purpose of the present invention is to provide a driving device.

[Means to solve the problem]

In order to achieve the above object, the present invention provides an inner cylindrical member 6. which follows the roll shift in the prior art. Outer cylinder member 5. Instead of placing the expandable body 9 on the shaft joint.

Each is placed inside a structurally stable gear reducer, and the shaft joints are simple and lightweight, with only solid or hollow members.

[Effect]

The inner cylindrical member 6 is a shaft part of a gear reducer, and the outer cylindrical member 5 is a gear part, and by connecting them so that they can move forward and having a built-in telescopic body, they are always pressed against the roll as in the past. By applying force, the incomplete fitting of the roll oval parts is resolved, and the roll shift can be automatically followed, resulting in a shaft joint that is simple in structure and lightweight. Therefore, the instability factor in the case of conventional complex and heavy shaft couplings, namely flexural vibration.

On the other hand, it is possible to eliminate the generation of vibration and impact noise.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

Power is transmitted from the gear reducer 2 via the power transmission shaft coupling 1, and the roll 3 is rotated. A power source 4 is connected to the gear reducer 2 .

An inner cylinder member 6 is inserted and connected inside the outer cylinder member 5, and a spring 9 is installed via a bearing cover 7 and spring guides 8A and 8B. By shifting the roll 3, a biasing force acts on the spring 9, which constantly applies an axial force to the roll, thereby eliminating incomplete fitting of the oval part.

Next, the roll shift tracking function of this embodiment will be explained.

FIG. 1 shows the neutral state of roll shift. When the roll 3 is shifted by Qx in the direction away from the gear reducer 2 and by Ω2 in the direction towards it, as shown in the figure,
The outer cylinder member 5 is a gear part and is fixed inside the reducer,
Following the roll shift, the inner cylinder member 6 moves to Ql, or
Only Q2 can be moved.

According to this embodiment, the inner cylinder member 6 is inserted into and coupled to the outer cylinder member 5 so as to be movable in the axial direction, and a biasing force is exerted between the other end of the inner cylinder member 6 of the bridge and the bearing cover 7. By arranging the screw 9, the roll shift function of absorbing the shift of the roll 3 by the forward movement of the inner cylinder member 6 can be achieved with a simple configuration, and the shaft coupling itself, which is a floating object, is also simple. You can get something lightweight.

〔Effect of the invention〕

According to the present invention, the inner cylindrical member is inserted and connected to the outer cylindrical member inside the gear reducer, and is made extendable by moving in the axial direction, so that the roll shift function can be performed with a simple structure. Moreover, the shaft coupling can have a simple and lightweight structure.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a driving device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional driving device.

Claims (1)

[Claims] 1. In a drive device consisting of a power transmission shaft coupling that transmits power to the rolls of a rolling mill by following the axial shift of the rolls, and a gear reducer, inside the gear reducer,
1. A drive device comprising an elastic body formed by inserting and connecting an inner cylinder member into an outer cylinder member so as to be reciprocally movable, and the elastic body is provided with an elastic body that constantly applies a pressing force to the roll.