JPH03223091A - Roll hoisting method and device therefor - Google Patents

Abstract

PURPOSE:To improve the efficiency of roll carrying out work by supporting a pin with a roll turning arm mechanism to turn a chock at the predetermined angle during the time that a roll is hoisted by a roll supporting arm. CONSTITUTION:Under the condition that a roll 1 barrel is hoisted a little with a claw of a supporting arm 5, a turning arm main frame 14 is lowered to hold a pin, which is provided in the end face of a chock 2, with a grip 25. Next, the roll 1 with chocks is hoisted perfectly, and a turning arm 8 is turned to rotate the chock 2 around of a roll shaft to the predetermined direction in any one of right and left, and thereafter, the roll 1 with chocks is mounted on a roll grinder to cancel the grip 25, and a roll hoisting tool 100 is hoisted by a crane to conclude the reverse moving work of the roll 1 with chocks. The turning arm 9 can be turned to any direction in right and left, and even if the turning direction of the chocks 2 in the upper and the lower is opposite, the turning arm 9 can correspond to it. Furthermore, even if the vertical positions of the roll hoisting tool 100 and the roll 1 are changed, the turning arm main frame 14 can be followed.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a roll lifting method and apparatus for lifting a chocked roll of a rolling mill and attaching it to a roll grinder.

(b) Prior Art Machining methods or machine tools have been proposed in which the rolls of a rolling mill are ground while still being assembled into a chock. For example, Japanese Patent Publication No. 51-24756, Japanese Patent Publication No. 58-15
259, JP 60-217052, JP 63-84856, JP 63-105880
It is disclosed in the publication number etc.

A typical example of these is shown in FIG. A chock 2 of the roll 1 is fixed by a clamp 3, and the outer diameter of the roll 1 is ground by a grinding wheel 4.

The purpose of holding the chock 2 vertically is to make it easier for the grindstone 4 to grind the outer surface of the roll 1.

Therefore, a roll lifting device was developed to transport the chocked roll and attach it to a roll grinder. For example, a "roll lifter" disclosed in Japanese Utility Model Application Publication No. 60-126479 supports the roll neck of a roll with a chock and supports 1. The chock is rotated 90 degrees by pressing the upper surface of the chock with a link mechanism in the lifted state.

In this roll lifter, in order to return the chock to the horizontal position, it is assumed that the center of gravity of the chock is made lower than the center of the roll.

Further, in Japanese Patent Application Laid-Open No. 63-216646, a "roll chock reversing device" uses a weight device to reverse a roll on a roll pedestal having a curved surface.

In the former roll lifter, when the center of gravity of the tip is higher than the roll axis, it does not stop at a position rotated 90 degrees from the horizontal position, but rotates more than 90 degrees.

Furthermore, since the chock can only be turned in one direction from the horizontal position, it is necessary to turn the roll hoist 180° horizontally in advance in order to turn the upper and lower chocks in opposite directions. This is also a factor in reducing work efficiency.

The latter roll chock reversing device rotates the chock 180°.
It is meant to be reversed, not rotated 90 degrees. This device requires large-scale equipment such as a roll pedestal, a weight device, etc., and, as mentioned above, only pivots in one direction.

(c) Problems to be Solved by the Invention The problems to be solved by the present invention are to provide a roll lifting method and device that has a simple structure and can turn a roll chock by 90 degrees in any direction.

(d) Means for Solving the Problems The roll lifting method of the present invention involves arranging a pin at a predetermined position on the end face of the chock in the roll lifting method for lifting a chocked roll of a rolling mill and attaching it to a roll grinding machine. 2. The roll lifting tool is provided with a roll support arm and a roll rotation arm mechanism, and while the roll is being lifted by the roll support arm, the roll rotation arm mechanism grips the pin and rotates the chock at a predetermined angle. The above problems are solved by the following means.

The roll lifting device of the present invention is a roll lifting device for lifting a chocked roll of a rolling mill and attaching it to a roll grinding machine.
The above-mentioned problem is solved by installing a pair of support arms and a pivoting arm mechanism installed at both ends of the hanging tool body to grip a pin disposed on the end face of the chock and pivot it at a predetermined angle.

It is preferable that the rotating arm mechanism is provided with a gripper for gripping the pin, and that the gripper is formed with a long hole-shaped pin gripping space.

(E) Function In the roll lifting method and device of the present invention, the roll body is slightly lifted by the claws of the support arm, the swing arm body is lowered, and the pins installed on the end faces of the support arm are gripped. Grip it by hand. Next, the chocked roll is completely lifted, the swing arm is rotated, and the chock is rotated around the roll axis in a predetermined direction, either left or right, and then the chocked roll is mounted on a roll grinding machine.
Release the grip and lift the roll hoist with a crane.
Completed roll reversal transfer work with chock.

The swivel arm can be swiveled in either the left or right direction.
Even if the upper and lower chocks rotate in opposite directions, it can be handled. Moreover, even if the vertical position of the roll hanger and the roll changes, the swing arm body is moved up and down to follow the change.

Even when the roll is lowered and grounded and the hanging tool is shifted downward relative to the roll, the weight of the roll hanging tool is not applied to the grip by forming the grip into an elongated hole shape.

Embodiment The method and apparatus for lifting a roll according to the present invention will be explained with reference to FIGS. 1 to 8.

As shown in the figure, the roll lifting method of the present invention involves hoisting a chocked roll 1 of a rolling mill and attaching it to a roll grinding shaft, in which a bin 21 is disposed at a predetermined position on the end face of the chock 2, and the roll Hanging tool 10
0 is provided with a roll support arm 5 and a roll rotation arm 9 mechanism, and while the roll 1 is being lifted by the roll support arm 5, the gripper 25 of the roll rotation arm mechanism 18 grips the bin 21 and the chock 2 is held at a predetermined angle. It consists of turning.

As shown in the figure, the roll lifting device of the present invention is a roll lifting device for lifting a chocked roll 1 of a rolling mill and attaching it to a roll grinding machine. 5 is installed at both ends of the hanging tool main body 10 to grip the bottle 21 disposed on the end face of the chock 2 and rotate it at a predetermined angle.
The gripper 25 is installed.

It is preferable that the swing arm machine 1118 is provided with a gripper 25 for gripping the bottle 21, and that the gripper 25 has an elongated hole-shaped bottle gripping space.

Next, a more detailed configuration and operation of the device of the present invention will be explained.

As shown in FIGS. 1 and 2, the suspender body 10 has a support arm 5 that is opened and closed by a screw shaft 61 driven by a motor 6, and supports the roll by using a receiving claw 51. , the suspension ring 7 is torn off, and the suspension ring 7 is lifted and transported using a crane (not shown).

The opening/closing amount of the support arm 5 is adjusted according to the change in the roll diameter of the roll 1.

FIG. 1 is a front view of the chocked roll 1 being lifted up by the roll lifting tool 100. Roll 1 is chock 2
The 60-wheel hanger 100, which is still attached, rotatably connects the swing arm 9 of the swing arm mechanism 18 to the arm body 14, and transmits the rotational movement of the swing arm 9 to the vertical arm 26 of the swing arm mechanism 18. It is configured to do this. The vertical arm 26 has a bin 21 arranged on the end face of the chock 2.
It has a grip 25 for gripping, and is driven by a motor 27 to open and close. Swivel arm 9 is cyclo reducer 1
2 and is rotated by a motor 11. The arm body 14 is connected to the motor 1 after 15 minutes of lifting and lowering the worm shaft.
6.

The height of the roll 1 relative to the roll hanger 100 changes due to a change in the roll diameter of the roll 1 or a change in the opening/closing amount of the support arm 5. At this time, the arm main body 14 is raised and lowered to follow the movement. The rotational movement of the swivel arm is transmitted in parallel by the crank structure of the swivel arm mechanism 18 composed of the swivel arm 9 and the vertical arm 26, and the rotation radius of the vertical arm 26 is the same as the rotation radius of the swivel arm 9. Become. Bin 21 placed on the end face of roll chock 2
By arranging the rotation radius of the chock 2 and the roll axis to be the same, the chock 2 can be smoothly rotated.

FIG. 6 shows a state in which the chock 2 lifts the roll 1 in a horizontal position and grips the bottle 21 at the end of the chock with the grip 25. Even if the center of gravity of chock 2 is higher than the axis of roll 1, the turning movement of chock 2 is caused by the grip 25.
is prevented by

Moreover, FIG. 7 shows a state in which the swing arm 9 is turned and the chock is rotated by 90 parts.

3 and 4 show a state in which the upper and lower chocked rolls 1 are stacked. A bin 21 for rotating the chock is arranged on the end face of the upper and lower chocks 2. In the illustrated example, the upper and lower chocks 2 have a point-symmetrical shape. For example, as shown in FIG. 5, in order to rotate the chock 2 by 90 parts from the horizontal position, it is necessary to rotate the upper chock 2 to the left and the lower chock 2 to the right. In the present invention, the structure is such that it can be rotated by 360° or more in any direction.

FIG. 8 is an enlarged view of the grip 25. grip 25
has a tongs mechanism consisting of a motor 27, a pair of grip arms 29, and a lifting rod 30, and grips the bottle 21 disposed on the end face of the chock. The grips 25 of the pair of grip arms 29 are elongated holes and have a structure for gripping the bottle 21.

Therefore, when the roll 1 with a chock is lowered to a roll storage place or a grinding machine and grounded, even if the hanging tool 100L is slightly lower than the roll, the chock hanging tool 1
00's own weight is not directly applied to the grip 25, and there is no risk of damaging the grip knob 25 and the vertical arm 26.

(g) Effects According to the present invention, the chock can be turned in any direction regardless of the position of the center of gravity of the roll with the chock,
The angle can also be set arbitrarily, and the efficiency of roll take-out work can be significantly improved.

[Brief explanation of drawings]

FIG. 1 is a front view of the roll lifting device of the present invention. Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1. Figure 3 is a front view of the roll chock part. Figure 4 is IV- of Figure 3.
Front view seen from IV line. FIG. 5 is an explanatory diagram of the operation of the roll grinding block. FIG. 6 is a side view taken along the line Vl--Vl in FIG. 1. FIG. 7 is a drawing similar to FIG. 6, and shows the state when the roll chock is rotated. Figure 8 shows ■-■ of Figure 1.
FIG. 3 is an enlarged side view of the grip section seen from the line. 1. Roll 2° roll chock 3; Clamp 4: Grinding wheel 5/support arm 6.11, 16, 27 7: Hanging ring 10: Hanging tool body 14: Arm body 21, pin 30: Lifting rod motor 9: Swivel arm 12: Cyclo reducer 18: Swivel arm mechanism 29, grip arm 100, roll hanger

Claims (1)

[Claims] 1. In a roll lifting method for lifting a roll with a chock of a rolling mill and attaching it to a roll grinding machine, a pin is arranged at a predetermined position on the end face of the chock, and a roll support arm and a roll are attached to the roll lifting tool. a swing arm mechanism; and while the roll is being lifted by the roll support arm, the roll swing arm mechanism grips the pin and swings the chock at a predetermined angle. 2. In a roll lifting device that lifts a chocked roll of a rolling mill and attaches it to a roll grinder, a pair of support arms that can be opened and closed are installed in the center of the lifting tool body,
A roll lifting device characterized in that a swing arm mechanism is installed at both ends of the hoist main body to grip a pin disposed on an end face of the chock and swing it at a predetermined angle. 3. The device according to claim 2, wherein the swing arm mechanism is provided with a gripper for gripping the pin, and the gripper has an elongated pin gripping space.