JPH02200309A - Device for transporting and attaching/detaching roll chock for rolling mill - Google Patents

Abstract

PURPOSE:To improve the working efficiency in a roll shop yard and to reduce an initial cost by passing a chock receiving base of the chock attaching/ detaching device in the lower part of a roll transporting truck. CONSTITUTION:The roll transporting truck 13 transports a roll chock assembly 6 from a rolling yard 2 to the roll shop yard 4. The preceding WS side chock of the transported roll chock assembly 6 is first removed by the chock attaching/detaching device 14 connected and disposed thereto. The remaining rolls and the rear side DS side chock are then moved to bestride the chock receiving base of the chock attaching/detaching device 14 by the roll transporting truck 13. The truck 13 is stopped when the DS side chock comes to the position of the chock receiving base. The DS side chock is then received by the chock receiving base and is removed. The operations reverse therefrom are carried out in the case of mounting the chocks.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the transportation of a roll chock for a rolling mill and the attachment and detachment of the chock, and in particular, the transportation of a roll chock for a rolling mill that improves the work efficiency of attachment and detachment of the chock. and regarding attachment and detachment of chocks.

[Conventional technology]

Conventionally, when polishing rolls for a rolling mill, the roll chock assembly was transported from the rolling yard to the roll shop yard using a roll transport trolley, and the roll chock assembly was hoisted up by a crane in the roll shop yard and transferred to a chock attachment/detachment device installed nearby. After changing the roll, the chock was attached and removed from the roll to form a single roll, which was then hoisted by a crane and transferred to a roll grinder for polishing.

Note that related devices of this type include, for example,
There is a Japanese Patent Publication No. 53-1127.

[Problem to be solved by the invention]

The above conventional technology does not take into consideration work efficiency in the roll shop yard.1 For example, in order to polish rolls efficiently, the use of cranes in the roll shop yard can be reduced and the rolls can be quickly transferred to a roll grinder. However, conventionally, the roll carrier and the chock attachment/detaching device were placed separately, which caused problems with work efficiency. Furthermore, in the chock attaching/detaching device, chock pedestals are installed on both sides of the roll body for attaching and detaching the chocks provided at both ends of the roll body, and the chock pedestals are driven in the roll axis direction to attach the chock to the roll. There was also a problem in terms of equipment cost because it was constructed so that it could be attached and detached.

The purpose of the present invention is to improve work efficiency in a roll shop yard and to reduce equipment costs.

[Means to solve the problem]

The above object is achieved by disposing a chock attaching/detaching device at the roll shop yard side end of a roll transporting carriage device for conveying a roll chock assembly from a rolling yard to a roll shop yard.

[Effect]

The roll transport truck transports the roll chock assembly from the rolling yard to the roll shop yard.

The transported roll chock assembly is connected to the chock attachment/detachment device, and the preceding WS side chock is first removed. Next, the remaining rolls and the rear DS side chock are moved across the chock cradle of the chock attaching/detaching device on the roll carrier, and when the DS side chock comes to the position of the chock cradle, the roll carrier is stopped, Receive the DS side chock with the chock holder. Remove the chock. Also, if you want to put on a chock, just do the opposite of this.
In this way, there is no need to transfer the roll chock assembly to another chock attachment/detachment device. The two chocks provided on both sides of the roll body can be attached and detached using a single chock holder, and the single roll can be loaded onto a roll grinder, etc. with a single crane lifting operation. I can do it.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 12. First, the overall configuration will be explained with reference to Figure 1.
Generally, a rolling mill is divided into an electrical equipment room 1, a rolling yard 2, a product yard 3, and a roll shop yard 4. In the electrical equipment room 1 and the rolling yard 2, there are a rolling mill 5, a roll metal chock assembly 6 built into the rolling mill, and an electric motor 7 for driving the rolls. Rolled material coil unwinding machine 8,
An unwinding machine driving motor 9, a rolling coil winding machine 10, and a winding machine driving motor 11 constitute a rolling mill.

The rolling yard hoist 12 is used for transporting rolled coils, transporting roll chock assemblies, and maintaining rolling mills. Roll polishing or chock maintenance is required. Although not shown here, the roll metal chock assembly 6 is pulled out to a state 6' outside the rolling mill by a roll changing device or the like. Next, the roll chock assembly 6' is lifted up by the hoist 12 and loaded onto the roll carrier 13 at the position 6'. The roll transport cart 13 moves in the direction of the roll shop yard 4 and comes to the position of the roll chock assembly 6''. A chock attachment/detachment device 14 is installed at this position, and the chock is attached to and detached from the roll. The roll chock is transported to the desired position by the starter 15 in the roll shop yard.The flow of a conventional roll chock assembly is shown in FIG. The roll chock assembly transported by the roll transport cart 13 is lifted and transported by the hoist 15 from the 6'' position to the conventional chock attachment/detachment device 16, and then the chock is attached and detached from the roll at that position, and the roll and chock are removed. They were transported to their respective destinations. Therefore, as is clear from a comparison of FIGS. 1 and 2, the conventional method increases the number of times the hoist is used in the roll shop yard. In addition, the WS side chock,
Further, when attaching and detaching the DS side chock, two chock holders 23w and 23d are provided as shown in FIG. 2, which is wasteful in terms of equipment cost.

Next, the details of the section (2) in FIG. 1, which is the key point of the present invention, will be explained. FIG. 3 is a detailed view of the section ■, and FIG. 4 is a view taken along the line IV--IV in FIG. A number of air diaphragms 17 determined by the weight of part a are installed on the lower surface of the roll carrier, and when the air pressure in the air diaphragms 17 is released near the air diaphragms 17, the weight of the roll carrier and the roll chock assembly is transferred by the roll. A receiving surface 19 is provided for transmitting the information to the running floor surface 18 of the truck. A pedestal 20 is provided on the upper surface of the roll carrier 13 to support both ends of the roll body. Drive guide rollers 21 are provided on the sides of the roll transport vehicle, and guides 22 are provided for guiding the vehicle to travel. On the other hand, the chock attaching/detaching device 14 has a chock pedestal 23, a plurality of air diaphragms 24 on the underside of the pedestal, a pedestal near the air diaphragm slum, and a receiving surface 25 for transmitting the weight of the chock to the floor surface 18. Provided at the four corners of the pedestal. A height-adjustable chock support 26 is installed on the upper surface of the pedestal. A chain 27 for moving is connected to the chock holder, and the sprocket 2
The chock pedestal can be moved back and forth in the direction of the roll axis by a drive machine 29 via 8. Roll transport trolley 13
The relationship between the chock pedestal 23 and the chock pedestal 23 is as shown in FIGS. 3 and 4, and the chock pedestal 23 is constructed so that it can pass through the lower part of the roll transport vehicle 13. Next, the procedure for attaching and detaching the roll chock assembly is shown in Figures 5 to 11.
This will be explained with a diagram.

Figures 5 to 8 are procedure diagrams in which the roll chock assembly is transported from the rolling yard to the roll shop yard and the WS side chock is removed, and Figures 9 to 11 are
FIG. 6 is a procedure diagram for removing the S side chock. First, in FIG. 5, the WS side chock 30 and the bearing 31 built into it,
The roll chock assembly 6 composed of the roll 32 and the DS side chock 33 has the end of the roll body supported by the pedestal 20, is loaded on the roll transport cart 13, and is transported to the roll shop yard side. A predetermined air pressure is supplied to the air diaphragm 17, and the roll transport truck runs with a gap maintained between the receiving surface 19 and the floor surface 18. Air diaphragms use air membranes to levitate heavy objects and reduce the coefficient of friction to about 1/1000, making them extremely effective for transporting heavy objects. On the other hand, the chock pedestal 23 of the chock attaching/detaching device 14 installed on the roll shop yard side is waiting at the forward position, as shown in FIG. In this position, air pressure is not supplied to the air diaphragm 24 and the receiving surface 25 is in contact with the floor surface 18. The roll carrier 13 further moves to the state shown in FIG. 6. In this state, a gap is provided between the lower surface of the WS side chock 30 and the chock support 26.

In the state shown in Fig. 6, the air pressure supply to the air diaphragm 17 is stopped, and the air diaphragm 24 of the chock holder is
When air pressure is supplied to , the state shown in FIG. 7 is achieved. In a normal rolling mill, the fit between the bearing 31 built into the chock and the roll neck of the roll 32 is about 0.25 m, and in order to float the chock with respect to the fitting part of the roll neck within this gap. Adjust the height of the chock support 26 to . That is, as shown in FIG. 12, air pressure is supplied to the air diaphragm 24, the air pressure of the air diaphragm 17 is released, and the center of the roll neck portion of the roll 32 is moved with the receiving surface 19 in contact with the floor surface 18. , bearing 3
The height of the chock support 26 may be determined so that the centers of the chock supports 26 coincide with each other. By doing this, the air diaphragm 24 is flexibly bent, and the WS side chock 30 is placed on the chock holder 23 together with the built-in bearing 31, and as shown in FIG. It is removed from the roll 32 by 28. Further, the chock 30 is transported to a predetermined position by a roll shop yard hoist 15. Next, the procedure for releasing the DS side chock 33 will be explained with reference to FIGS. 9 to 11. From FIG. 8, with the WS side chock 30 removed, the air pressure of the air diaphragm 24 is released, and the receiving surface 25 is aligned with the floor surface 1.
8. Next, air pressure is supplied to the roll diaphragm 17. In this state, the roll transport cart 13 is moved to the state shown in FIG. 9. Next, the air pressure of the air diaphragm 17 is released, and the air pressure of the air diaphragm 24 is supplied to float the chock holder 23 and receive the DS side chock 33. In this state, WS side chock 3
12, the center of the roll neck portion of the roll 32 and the center of the bearing 31 are aligned with each other by the chock support 26, as in the case of receiving 0.

Furthermore, the chock pedestal 23 is moved rearward by driving the chino 27 and sprocket 28, and the state shown in FIG. 11 is set to DS.
Remove the side chock 33. The single roll 32 is transported to another target position (for example, a roll grinder, etc.) by a hoist 15 in the roll shop yard. DS
The side chock 33 is also transported to a predetermined position by the hoist 15 and subjected to predetermined treatment.

Conversely, when attaching a chock to a roll.

It can be completed by performing the reverse operation of the above-mentioned operation. When the new roll and new chock are completely installed, they are in the state shown in FIG. 5, and are transported from the roll shop yard to the rolling yard by the roll transport cart 13, and transported by the hoist 12 to the front WS side 6' of the rolling mill 5. It is used to replace the old roll chock 6.

With the above-mentioned operation, the air diaphragm 17 and the receiving surface 19 . Air diaphragm 24 and receiving surface 25 of chock holder 23, and chock support 2
The combination of the 6 operations results in the following combination of friction coefficients, and the chocks 32 and 33 can be reliably attached and detached from the roll 32 using the chock pedestal 23.

μ, : 0,001 : Friction coefficient between the air diaphragms 24, 17 and the floor surface 18 μs 0.3 : Friction between the receiving surface 19 of the roll carrier 13, the receiving surface 25 of the chock pedestal 23, and the floor surface 18 Coefficient μ, valve Q, 3: chock pedestal 23 and chock support 26
and between the chock support 26 and the chock 30.33.

μ. 4o~0.03: Neck part of roll 32 and bearing 3
Friction coefficient between 1.

For example, to explain these conditions using FIG. 8, μS〉μ
Since a, μn and μb, the chocks 30 and 33 can be reliably attached to and removed from the roll 32. Also, air diaphragm 2
4 is used after being expanded by air pressure, so it has a flexible structure, and even if there is some roll inclination or misalignment, it can be flexibly handled and the chock can be easily attached and detached.

Next, regarding other embodiments of the present invention, FIGS.
This will be explained using figures. A chock holder 34 of a chock attaching/detaching device fixed to the floor surface 18 is provided at the end of the roll shop yard side of the roll transporting cart device, and a cylinder 35,
Install the ram 36.

First, in FIG. 13, the ram 35 is placed on standby at the lowest stroke limit, and the roll chock assembly loaded on the roll carrier 13 travels from the rolling yard side. 1st
In FIG. 4, when the WS side chock 30 comes to the top of the chock pedestal 34, the roll carrier 13 stops. In FIG. 15, the ram 36 is raised to receive the WS side chock 30. In this state, as shown in FIG. 12, when the centers of the chock 30 and the bearing 31 are aligned and the gap between them is uniform on the circumference of the roll neck part, the chock 30 is at its maximum.
0 makes it easy to extract. In FIG. 16, when the roll carrier 13 is moved slightly backward, μ5>μ due to the above-mentioned relationship of friction coefficients.

Therefore, the chock 30 can be easily removed.

Similarly, when removing the DS side chock 33, the roll carrier 13 passes over the chock holder 34,
When the chock 33 reaches the upper part of the chock pedestal 34, the roll MIs1 cart 13 is stopped and the chock 33 can be removed by performing the same operations as shown in FIGS. 13 to 16. When installing the respective chocks 30 and 33, the above-described operations may be performed in reverse.

〔Effect of the invention〕

According to the present invention, the working efficiency of roll conveyance is improved and equipment costs are reduced.

[Brief explanation of the drawing]

FIG. 1 is a layout diagram of a chock attachment/detaching device in a rolling mill showing an embodiment of the present invention, FIG. 2 is a layout diagram of a chock attachment/detachment device in a conventional rolling mill, and FIG. 3 is a detailed view of the part (■) in FIG. 1. ,
Figure 4 is a sectional view taken along IV-rV in Figure 3, and Figures 5 to 8.
9 to 11 are diagrams showing a procedure for attaching and detaching a WS side chock using an attaching and detaching device according to an embodiment of the present invention, and FIGS. FIG. 12 is a sectional view of FIG. 7, and FIGS. 13 to 16 are diagrams showing the chock attachment/detachment procedure according to other embodiments of the present invention. 1 1...fM, machine room, 2...rolling yard, 3...product yard, 4...a-le shop yard, 5...rolling machine, 6...roll metal chock assembly , 7... Roll drive motor, 8... Coil unwinder, 9... Unwinder drive motor. DESCRIPTION OF SYMBOLS 10... Coil winding machine, 11... Winding machine drive motor, 12... Rolling yard hoist, 13... Roll transport trolley, 14... Chock attaching/detaching device, 15... Roll shop 6! 4f1. H'shi 1, 1 -51 (cold - 7th hard tea session F; 10th figure, back of the figure)

Claims (1)

[Scope of Claims] 1. A chock attaching/detaching device is disposed at the end of the roll transporting yard on the side of the roll chock yard of a roll transport truck that transports a roll chock assembly from a rolling yard to a roll shopping yard, and a chock receiving truck of the chock attaching/detaching device is installed. A device for transporting a roll chock for a rolling mill and for attaching and detaching a chock, characterized in that the roll chock is configured to pass through the lower part of the roll transport vehicle, and chock provided at both ends of the roll is configured to be attached to and detached from the roll. 2. In claim 1, the chock holder of the chock attaching/detaching device is fixedly installed on the ground, and the roll carrier is configured to pass over the top of the chock holder, and the chock receiving surface of the chock holder is fixedly installed on the ground. for a rolling mill, characterized in that the chock is moved upward and downward, and after receiving the chock, a roll conveying cart is moved so that the chock remains on the chock holder to attach and detach the chock from the roll. Roll chock transport and chock attachment/detachment device. 3. In claim 1, an air diaphragm is provided on the lower surface of the roll carrier, a pedestal for supporting both ends of the roll body is provided on the carrier, and a lower surface of the chock cradle of the chock attaching/detaching device. The rolling mill is equipped with an air diaphragm, and a height-adjustable chock support is provided on the upper surface of the chock pedestal, so that the chock pedestal can move back and forth in the direction of the roll axis. Roll chock transport and chock attachment/detaching device. 4. In claim 3, a receiving surface for transmitting the load of each cart to the floor is provided near the air diaphragm on the lower surface of the roll transport cart and the lower surface of the chock holder of the chock attachment/detaching device. A device for transporting a roll chock for a rolling mill and for attaching and removing the chock, characterized by the following. 5. A roll carrier is provided for transporting the roll chock assembly from the rolling yard to the roll shop yard, and a chock attaching/detaching device is provided at the side end of the roll shop yard, and the roll is placed on the roll carrier. How to attach and detach the chiyotsuku from the roll.