JP2006150381A - Back up roll liner replacement apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mount a liner to a lower surface of a chock without revolving the chock in order to facilitate work of replacing liners (roller plates). <P>SOLUTION: The backup roll liner replacement apparatus includes: right and left chock receiving stands which respectively support the right and left chocks to be conveyed together with a lower backup roll in replacement of the liners; and liner supports which support the liners 109R stacked to a prescribed height and are provided vertically movably within the hollow sections of the chock receiving stands. By the vertical movement of the liners 109R by the liner supports, the replacement of the liners is carried out by operator's manual work. The liner support is provided with: a lifter 11 for vertical movement which performs the vertical movement of the liner support; a first positioning means 12 which performs positioning in a longitudinal direction of the liner support; a second positioning means 13 which performs positioning in a horizontal direction of the liner support; and a rotating direction position adjusting means 14 which permits the rotation in a prescribed angle range of a circumferential direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a backup roll liner replacement device.

  In the rolling processing facility, as shown in FIG. 9, the pass line P through which the material to be rolled 101 passes must be maintained at a certain range of height in accordance with the facilities of the preceding and subsequent rolling mills 102A, 102B. Each rolling mill 102A, 102B is configured such that the material to be rolled 101 passes between the upper work rolls 103A, 103B and the lower work rolls 104A, 104B. Upper backup rolls 105A and 105B are provided above the upper work rolls 103A and 103B, and lower backup rolls 106A and 106B are provided below the lower work rolls 104A and 104B, respectively.

  In order to adjust the roll gap between the upper backup rolls 105A and 105B and the rolling mill housings 107A and 107B, roll gap adjusting devices 108A and 108B are provided between them. In order to adjust the roll gap between the lower backup rolls 106A and 106B and the rolling mill housings 107A and 107B, liners 109A and 109B (filler plates) are provided therebetween.

  Since the height of the pass line P changes depending on the diameter of the lower backup rolls 106A and 106B, when replacing the lower backup rolls 106A and 106B, the adjustment of the pass line P according to the diameter of the lower backup rolls 106A and 106B is performed. Has been done. This pass line P is adjusted by installing a plurality of height adjustment (gap adjustment) liners 109A and 109B under the chocks (bearings) 110A and 110B of the lower backup rolls 106A and 106B. This is done by changing the sum.

  By the way, the liners 109A and 109B usually need to be stacked in a predetermined position on the lower surface of the backup roll chock 110A and 110B in order to obtain a predetermined thickness by stacking plates having different thicknesses. There is.

  Therefore, conventionally, when exchanging the backup roll, first, the lower work roll and the lower backup roll are sequentially extracted from the rolling mill housing, and the liner (filler plate) is removed. Then, a liner whose thickness is adjusted according to the diameter of the new lower backup roll is charged, and a new lower backup roll and a lower work roll need to be charged in order.

  In other words, when adjusting the pass line, the old backup roll is pulled out, the liner is replaced and the height adjusted to adjust the pass line according to the roll diameter of the new backup roll. This is a complicated and time-consuming operation. For example, in the case of a finish rolling mill of a normal hot rolling line (usually about 7 tandem rolling), it takes about 2 to 3 hours to replace the liner out of the roll replacement time that requires a total of 8 to 10 hours. .

  Therefore, by installing the liner on the lower surface of the lower backup roll off-line in advance, at the time of replacement, the lower work roll and the lower backup roll (with the liner attached) are sequentially extracted from the rolling mill housing, and then It can be considered that the time for adjusting the height of the liner can be omitted by sequentially inserting the lower backup roll and the lower work roll in which the liner has already been incorporated.

  In this case, when the liners 109A and 109B are attached to the new backup roll chock 109A (109B), as shown in FIG. 10, the backup roll chock 109A is turned over so that the liner mounting portion faces the upper surface and the liners 109A and 109B. A method is generally used in which the necessary number of sheets are stacked, positioned and fixed. For this reason, the replacement operation of the liner involves a complicated operation such as turning the backup roll chock.

By the way, an apparatus for exchanging a liner in a state where the lower backup roll is lifted by the lifting cylinder (or hydraulic cylinder) in the rolling mill itself is already known (see, for example, Patent Documents 1 and 2).
JP 02-037905 (page 3, lower right column, line 15 to page 4, upper right column, line 15 and FIGS. 1 to 3) Japanese Patent Laid-Open No. 11-169923 (paragraphs 0049 to 0051 and FIG. 3)

  However, when the liner is replaced in such a state that the backup roll is lifted by the lifting cylinder (or hydraulic cylinder) as described above, the replacement device becomes large, and for each lower backup roll (chock), It is necessary to provide such a lifting cylinder.

  As shown in FIG. 11, the inventor takes out the lower backup rolls 106A and 106B and adjusts the height below the chocks 110A and 110B of the lower backup rolls 106A and 106B without turning the chocks 110A and 110B. The new liners 109A and 109B are lifted from below using the lifting devices 111L and 111R in a state where they are supported so that spaces for attaching the liners 109A and 109B for (gap adjustment) are formed. In this case, the inventors have conceived that the replacement operation of the liner (filler plate) can be easily performed, and have reached the present invention.

  An object of the present invention is to provide a backup roll liner replacement device that can easily perform a replacement operation of a liner (filler plate) on the lower surface of a chock of a lower backup roll.

  The invention of claim 1 is used when exchanging a liner provided on the lower surface of the chock of the lower backup roll to adjust the gap between the lower roll and the housing of the rolling mill, and is installed at a location different from the rolling mill. A backup roll liner exchanging device having a hollow portion, and a chock receiving base on which the chock is placed so that a liner mounting portion on the lower surface of the chock is positioned on the hollow portion at the time of liner replacement, and the liner A liner support base that can be supported from below, a first moving means that is provided below the liner support base and moves the liner support base in a specific direction within a horizontal plane, and under the first moving means A second moving means for moving the first moving means in a direction perpendicular to the specific direction within a horizontal plane, and a lower side of the second moving means. The serial liner support table, characterized in that it comprises a lifting lifter for raising and lowering via said first and second moving means while maintaining the parallel relationship between the liner attachment portion.

  In this way, when the backup roll is transported to the liner replacement station together with the chock with a crane or other transporter, the chock (bearings) on both the left and right sides of the backup roll are on the chock receiving stand and the liner mounting part is hollow. It is mounted so that it may be located on a part. In this state, the liner support base is aligned in the specific direction and the direction orthogonal to the specific direction by the first and second moving means, and the liner (liner attachment) attached to the liner support base and the backup roll chock. Position) is opposed to each other in the vertical direction, and the liner can be exchanged.

  Then, the liner is removed by raising the liner support. After the liner is removed, the liner support is lowered and the old liner is removed, and then a new liner (liner height adjusted to the diameter of the new backup roll) is placed on the liner support. .

  Thereafter, the liner support is raised, and the liner is attached to the backup roll.

  In this case, as described in claim 2, the liner support base is rotatably supported on the first moving means, and the liner support base is provided between the liner support base and the first moving means. It is desirable to provide a cam mechanism for guiding the rotation of the table and a stopper mechanism for restricting the rotation of the liner support table over a certain angle.

  In this way, in addition to the alignment in the specific direction and the direction orthogonal thereto in the first and second moving means, it is possible to rotate in a certain angular range in the circumferential direction (rotation direction). Directional alignment can also be performed.

  Since the present invention is configured as described above, the first and second moving means perform alignment in a specific direction and a direction perpendicular to the specific direction with the chock placed on the chock receiving base. Since the replacement operation of the liner (filler plate) is performed, the replacement operation of the liner can be performed accurately and easily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram showing a backup roll liner exchange device showing a state where left and right chocks of a lower backup roll are placed.

  The backup roll liner replacement device 1 shown in FIG. 1 is used to replace the liners 109L and 109R of the left and right chocks 110L and 110R of the lower backup roll 106, respectively. As described above, the liners 109L and 109R adjust the roll gap between the lower surfaces of the chock 110L and 110R of the lower backup roll 106 of the rolling mill and the rolling mill housing, and are different from the rolling mill. Installed. Further, as shown in FIG. 2, the liners 109L and 109R have a rectangular parallelepiped shape with a width W = 152 mm, a length L = 1041.4 mm, and a thickness (height) H = 15 to 200 mm in this embodiment. However, a single or a plurality of sheets are stacked and used as a predetermined thickness corresponding to the roll gap.

  The backup roll liner replacement device 1 includes, for example, left and right chock receiving bases 2L and 2R that respectively support the left and right chock 110L and 110R conveyed together with the lower backup roll 106 during liner replacement, and liners stacked at a predetermined height. 109L and 109R are supported from below, and liner support bases 3L and 3R are provided in the hollow portions 2Ra and 2La of the chock support bases 2L and 2R so as to be movable up and down. As the liners 109L and 109R are moved up and down by the liner support bases 3R and 3L, the liner replacement operation is performed manually by an operator using an operation box 61 described later. FIG. 1 shows a state in which the right liner support base 3R is in the lower standby position, and a state in which the left liner support base 3L is in the upper liner replacement position. The liner support bases 3L and 3R are 152 mm wide and 920 mm long, while the liners 109L and 109R are 152 mm wide and 1041.4 mm long and 15 to 200 mm thick (when stacked). 109R is longer than the lifts 2L and 2R, and the liner (stacked state) is attached and fixed to the chocks 110A and 110B with attachments (not shown) before and after the longitudinal direction.

  The liner support bases 3L and 3R provided in the hollow portions 2La and 2Ra of the left and right chock support bases 2L and 2R of the backup roll liner exchange device 1 can be moved up and down by a similar lifting mechanism. A mechanism for raising and lowering the support 3R will be described with reference to FIGS.

  Below the liner support base 3R, a lifter 11 for raising and lowering the liner support base 3R, a first positioning means 12 (second movement means) for moving the liner support base 3R in the horizontal direction in a horizontal plane, a liner The second positioning means 13 (first moving means) for moving the support base 3R in the front-rear direction (specific direction) in the horizontal plane and the rotational direction position adjusting means 14 for rotatably supporting the liner support base 2R within a certain angle range. Are provided in order from the lower side, and can be moved up and down along with the position adjustment of the liner support base 3R in the horizontal plane. The liner support base 3L is configured similarly.

  The lifting lifter 11 includes a lower plate member 22 provided on a base 21 (or the ground), and an upper plate member 24 provided to the lower plate member 22 so as to be lifted and lowered via a pantograph mechanism 23. The first positioning means 12 is provided on the upper surface of the upper plate member 24.

  The first positioning means 12 includes a guide rail 31 provided on the upper surface of the upper plate member 24 so as to extend in the left-right direction, a slider 32 slidably engaged with the guide rail 31, and the slider 32 attached thereto. The first movable plate member 33 and an actuator 34 provided between the upper plate member 24 and the first movable plate member 33 and moving the first movable plate member 33 in the left-right direction with respect to the upper plate member 24 (for example, Hydraulic cylinder). A second positioning means 13 is provided on the upper surface of the first movable plate member 33.

  The second positioning means 13 includes a guide rail 41 provided on the upper surface of the first movable plate member 33 so as to extend in the front-rear direction, a slider 42 slidably engaged with the guide rail 41, and the slider 42. Are attached between the second movable plate member 43, the first movable plate member 33, and the second movable plate member 43, and the second movable plate member 43 is attached to the first movable plate member 33. And an actuator 44 (for example, a hydraulic cylinder) that moves in the front-rear direction. A liner support 2 </ b> R is provided on the upper surface of the second movable plate member 43 via the rotational direction position adjusting means 14.

  The rotational position adjusting means 14 is for the second movable plate member 43, and rotates the liner support base 2 </ b> R via the bearing 52 with respect to the central shaft member 51 of the second movable plate member 43 at the center. A cylindrical member 53 is externally fitted so as to be rotatable. Near the end, a cam mechanism 54 for guiding the rotation of the liner support base 2R is provided, and a stopper mechanism 55 for restricting the rotation of the liner support base 3R over a certain angle is provided.

  The cam mechanism 54 has a cam surface (curved surface with the central shaft member 51 as a rotation center) and is fixed to the upper surface of the second movable plate member 43, and the cam member 54a provided on the liner support base 2R. The cam follower 54b moves along the cam surface 54a. The stopper mechanism 55 includes a stopper member 55a attached to the liner support base 2R, and a shock absorber 55b that restricts rotation of the liner support base 2R by a predetermined angle or more by colliding with the stopper member 55a. Yes.

  Moreover, the said backup roll liner replacement | exchange apparatus performs a liner replacement | exchange operation | work by manual operation with the operation box 61 shown in FIGS.

  The operation box 61 is configured such that an operator can hang it on his / her shoulder by a shoulder bracket 62A attached thereto. On the left and right sides of the operation box 61, gripping metal fittings 62B are provided.

  On the operation surface (upper surface) of the operation box 61 and on the shoulder bracket 62A side, as shown in FIGS. 5 and 6, the first lever 63 for adjusting the position in the front-rear direction and the left-right direction, and the ascending / descending are provided. And a second lever 64 to be controlled. An emergency stop button 65 is provided on the first lever 63 side, and an operation power ON button 66 and an OFF button 67 are provided on the second lever 64 side, respectively, so that the left and right devices can be operated independently. It is configured. As shown in FIG. 7, the first connector 68 a provided at one end of the cable 68 is connected to the receiving portion 61 a of the operation box 61, and the second connector 68 b at the other end of the cable 68 is connected to the liner replacement device 1. Connected to a receiving part (not shown) of the control panel.

  When configured as described above, when the lower backup roll 106 is transported to the liner replacement station together with the chocks 110L and 110R (with the liners 109L and 109R attached), for example, with a crane or the like, Chock 110L, 110R is placed on the left and right chock support bases 2L, 2R. At this time, the liner mounting portions on the lower surfaces of the chocks 110L and 110R are placed so as to be positioned above the hollow portions 2Ra and 2La.

  After the placement, the first and second positioning means 12 and 13 perform alignment in the front-rear direction and the left-right direction in the horizontal plane, and the chock 110L and 110R of the liner support bases 3L and 3R and the lower backup roll 106 are placed. The attached liners 109L and 109R (liner attachment portions) are in a positional relationship facing each other. Further, circumferential alignment is also performed by the rotation direction position adjusting means 14.

  After alignment, the operator releases the attachment of the liners 109L and 109R (the liner that is currently in use and needs to be replaced), removes the liners 109L and 109R, and places them on the liner support bases 3L and 3R. And then carry it out with a crane or other transporter (not shown). The removed liners 109L and 109R are reused.

  Then, a liner having a predetermined height (a new liner to be replaced) is placed on the liner support bases 3L and 3R, and the liners 109L and 109R are raised to positions where they can be attached. In this state, the operator attaches the liners 109L and 109R to the chocks 110L and 110R using a fixture (not shown).

  After completion of the installation, the liner support bases 3L and 3R are lowered and returned to the initial position.

  Such a series of operations is performed while the operator performs operations on the operation box 61.

  In the description of the embodiment of the present invention, an example of a quadruple rolling mill has been described, but pass line adjustment such as a work roll of a double rolling mill or a backup roll of a sixfold rolling mill is performed. Needless to say, the same applies to the replacement of the liner (filler plate) used at the time.

It is a schematic block diagram which shows the backup roll liner exchange apparatus which shows the state in which the left and right chock of the lower backup roll was mounted. It is explanatory drawing of a liner. It is a front view which shows the principal part of a backup roll liner exchange apparatus. It is the same side view. It is an arrow view of the AA direction of FIG. It is a top view of the operation box concerning the present invention. It is the same front view. It is explanatory drawing of the connection of the operation box which concerns on this invention, and an exchange apparatus. It is explanatory drawing of a general rolling installation. It is explanatory drawing of the replacement procedure of the liner of the conventional backup roll. It is explanatory drawing of the principle of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Backup roll liner exchange apparatus 2L, 2R Chock base 2La, 2Ra Hollow part 3L, 3R Liner support base 11 Lifting lifter 12 1st positioning means (2nd moving means)
13 Second positioning means (first moving means)
14 Rotational direction position adjusting means 33 First movable plate member 54 Cam mechanism 55 Stopper mechanism 61 Operation box 106L, 106R Lower backup roll 109L, 109R Liner 110R, 110R Chock

Claims (2)

A backup roll liner changer installed on the lower surface of the chock of the lower backup roll and used to change the liner for adjusting the gap between the housing of the rolling mill and installed at a location different from the rolling mill. There,
A chock cradle on which the chock is placed so that a liner mounting portion on the lower surface of the chock is positioned on the hollow part when the liner is replaced with a hollow part;
A liner support that can support the liner from below;
A first moving means provided on the lower side of the liner support base for moving the liner support base in a specific direction within a horizontal plane;
A second moving means provided below the first moving means for moving the first moving means in a direction perpendicular to the specific direction in a horizontal plane;
An elevating lifter provided below the second moving means and elevating and lowering the liner support base through the first and second moving means while maintaining a parallel relationship with the liner mounting portion; A backup roll liner changer characterized by. The liner support is rotatably supported on the first moving means;
A cam mechanism for guiding the rotation of the liner support base and a stopper mechanism for restricting the rotation of the liner support base over a certain angle are provided between the liner support base and the first moving means. The backup roll liner replacement apparatus according to claim 1.

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