JPS60157496A - Roll lifter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll lifter for suspending rolling rolls and the like.

Generally, in rolling mills used in steel mills, etc., it is necessary to periodically grind the surface of the rolls used to roll the material or the backup rolls. Since the amount of N is up to several tens of tons, it is common to use a single lifter to remove the a-ru from the rolling stand, transfer it to a blind sewing machine, etc., and then attach it to the rolling stand again. It's inside.

By the way, the above-mentioned roll usually has chocks, which are bearings, installed on both ends of the roll.
Since it is difficult to assemble this chock to the grinding machine in the same position as when it was attached to the rolling stand, it is necessary to rotate the chock by 90 degrees in the vertical plane. is equipped with a device for turning this chock.

In general, this chock rotation device has a fan-shaped beam that can rotate about the roll axis within a range of approximately 90 degrees placed on the rain forest side of the roll suspension part of the roll lifter, and is rotated by a chock engagement shoe fixed to this fan-shaped beam. Normally, it is designed to give turning power to the four-piece.

However, conventional roll lifters are extremely difficult to use due to the presence of such a chock turning device, and in order to automate and eliminate such operations, the structure 1 mechanism has to be complicated. The problem was that it was extremely expensive. These reasons are as follows. In other words, since the chock rotation device rotates the check around the roll axis as described above, in relation to the roll suspension state of the roll lifter, the roll suspension device and the check rotation device are vertically It is clear that the relationship must be such that the roll axes are always coincident in direction. However, the diameter of the roll changes over time due to grinding, and
If the point at which the roll is supported is constant, the roll axis-center when the roll is suspended naturally changes in the vertical direction with respect to the support point. Therefore, at least one of the roll suspension device and the chock rotation device must have a vertical position adjustment mechanism with respect to the main body of the roll lifter.

As a result of intensive studies to resolve these difficulties, the inventor of the present invention has developed a system that allows rolls of different dimensions to be made in one piece using an extremely slow mechanism.
An a-le lifter with a self-aligning function that allows the lifter to be suspended with the 70-a-le axis always kept constant with respect to the lifter body. This is what led to its development.

Therefore, the gist of the present invention, which is provided to achieve all of these objects, is to provide a roll hanging device located below a beam member extending in the horizontal direction and in the middle of the longitudinal direction thereof;
In the a-le lifter equipped with a chock turning device located at each of both ends in the longitudinal direction, the roll hoisting device includes a pair of hoisting hooks whose spacing can be expanded or contracted in the width direction of the beam part. , a claw member is attached to each of the opposing side surfaces of the hanging arm with a degree of freedom of movement in the vertical direction, and each of these claw members has an intermediate portion as viewed from one end in the longitudinal direction of the beam member. The roll lifter is characterized in that a liner is provided in the tangential direction of each symmetrical roll at the upper and lower positions with the perpendicular as the line of symmetry.

The present invention will be explained below based on the drawings.

Figure 1 shows a partial front view of the coil lifter.

The figure omits a part of the symmetrical right end side. Further, FIG. 2 shows a right side view taken in the direction of arrow A in FIG. 1, and FIG. 3 shows a sectional view taken along the line B--B in FIG.

In the figure] is the upper main beam (beam member) forming the main structural body of the roll lifter, and has a constant length in the horizontal direction. A suspension plate 2 having an opening 3 into which a crane hook is engaged is fixed at the center in the longitudinal direction of the upper part of the 7, and below the upper main beam 1 at the position of the suspension plate 2, A horizontal beam 4 extending in the width direction of the main beam is fixed via a joint plate 5.

In addition, a chock turning device 6 is attached to each of the longitudinally opposite end sides of the upper main beam 1. The chock turning device 6 has an arc-shaped fan beam as shown in FIGS. 21 and 3. 7, a fan-shaped gear 8 of the same shape integrated with it, a set of guide rollers 9 for guiding the fan-shaped beam 7 to rotate by an angle of 90° in the circumferential direction of the circular arc, and the fan-shaped gear 8. A motor 10 and a gear train 11 that provide forward and reverse rotational force extend outward from the fan beam 7 in the longitudinal direction of the upper main beam 1 and are slightly curved toward the rotation center of the fan beam 7. An arm 12 is formed to have an engaging part 13 with a chock at the tip thereof. Also, the horizontal beam 4 has an arm 12 that can expand/shrink the interval in the width direction of the upper main beam 1. A pair of sliding arms 14.14 (see Fig. 3) are assembled, and the expansion and contraction of these sliding arms 14.14 is as follows.
The rotation of the motor 5 on the transverse beam 4 causes a screw shaft (not shown) disposed inside the transverse beam 4 along the longitudinal direction.
is rotated, and a pair of sliders (not shown) t1 screwed into the right-hand and left-hand threads of this screw shaft are synchronously expanded and contracted in interval.

Then, the claw members ]6°16 are respectively assembled to the slide arms 14 and 14 of this example so that they are positioned symmetrically with respect to the perpendicular c-c2 line of symmetry in the center of the figure in the state shown in Fig. 3. At the same time, this claw member 16°J6 is attached to the slide arm 14.
．． 14 so as to be movable in the vertical direction by fitting the bottle 17 with the elongated holes 18 and 18, and furthermore, the claw portion is provided with the above-mentioned line of symmetry C- (4- The liners 19.19 and 20.20'i are fixed to the position and two pairs of lower positions, which are in locking contact with the roll.In addition, these upper and lower liners]9゜20 in this paper are As is clear from FIG. 1, the lower liner 20, 20 and the upper rice 19 are arranged at each vertex of an erect isosceles triangle.

This is because the lower liner 20.20 is for reliably suspending the roll, whereas the upper liner J9 is for
This is due to the fact that the claw member 16 (i7) is provided as a member used for upward movement relative to the slide arm 14, as will be described later.

It should be noted that each of the liners has a retaining contact surface with respect to the roll in a tangential direction to the circumferential surface of the roll. All conditions are mandatory.

Now, to explain the usage state of the a-le lifter with the above-mentioned sound structure, the slide arm 14.34 is opposed to the work roll 21 for rolling, for example, shown by the dashed line in FIG. Then, the roll lifter is suspended so that the chock turning devices 6 on both sides face the chocks 22 at both ends of the work meal.

In this state, the pair of sliding arms 14.1 on the lower side of the horizontal beam 4
4 Fully retract and close the liner 19.2 of the claw member 16.16.
0 to hold the body of Shiroru 2 (see Figure 3).
. And at this time, the roll radius iR, o-roll axis 0! Let L be the distance between the lower end of the horizontal beam 4 and the lower end of the horizontal beam 4.

At this time, the roll axis O in the rotation device 6
1, and the center of rotation 0 of the fan-shaped beam 7 of the rotation device.
It is clear from FIG. 2 that it is essential for the mechanism of the device that the relationship with 1 be the same as that of 1. That is, in FIG. 2, the roll axis O1 coincides with the rotation center 02 of the fan-shaped beam 7, so that the tip retaining portion 3 of the arm 12 is secured to the upper surface of the chock 22 (or facing it with a slight gap). This is because by rotating the fan-shaped beam 7t by 90 degrees in this state, the chock 22 is rotated by 90 degrees as shown in FIG.

However, assuming that the roll lifter is of a type in which the roll support point indicated by the arrow in Fig. 2 cannot be changed in 9, when the roll is ground and reduced to a radius r, the axis of the roll 7 will be Needless to say, the chock rotation device 6 cannot be applied to O12 as it is.

On the other hand, in the roll lifter with the constituent sound shown in FIGS. Alignment is done automatically. This can be seen in Figure 5 (
To explain in terms of a), (b), and (c), first, move the roll lifter with respect to the radius r and its axis 0'1.
The fan-shaped beam 7 is suspended so that its center of rotation 02 is at a certain lower position, and in this state the pair of slide arms 14 and I are contracted and closed. In this case, the claw members 16.16, which form a pair on the left and right sides of the figure, are slightly shifted downward with respect to the roll 21, so the upper liner with respect to the roll 21 is retracted and closed by the slide arm 14.14. 19 engages with the peripheral surface (see Fig. 5 (a)).

Then, when the slide arm 14.14 further retracts and closes, the claw part'
4A'16, 16 is pushed up by the roll 21, and the bottles 17.17 move within the long holes 18, 18, and the whole moves upward relative to the slide arm 14.14 (Fig. 5 (b)). reference).

in this manner until the lower liner 20.20 of the pawl member 16.16 engages the circumferential surface of the roll 2''. ] After retracting and closing 4i and stopping the retracting and closing of slide arm 14.34, roll lifter? Lift it upward.

In this case, the pawl member 16.16 is attached to the sliding arm 14.1. ．．
4 by fitting the elongated hole 18°18 and the pin 17.17, as the roll lifter is lifted, the pin 17.17 of the claw member 16.16
is the dead weight (and the weight of the roll) at the lower end of the long hole 18.18.
After reaching the bottom end (see Figure 5, t-S), it is lifted upward in a suspended state by the roll lifter.

In other words, since the a-rule 2J is suspended between the upper and lower liners J 9 and 20 assembled to the claw members 16 and 16, its axis is heart 0'l
is a symmetrical liner 19 regardless of the diameter of the roll.
, 20. On the other hand, when the claw member 14.14 is lifted up by the roll lifter, the pin [7] is at a certain position located at the lower end of the elongated hole [8]. Therefore, the distance between the lower end of the transverse beam 4 and the roll axis 0'1 is L, which is the same as that of the roll in the case of the radius R described above.

In this way, the roll lifter in this example has a pair of upper and lower sides. The claw members 16.16 having the liner 19.20i grip the roll at four radial positions, so that even if the diameter of the roll changes, the center of the roll axis Os( There is an advantage that the position of 0Il to 0Il) can be automatically aligned with the center of rotation O8 of the fan-shaped beam 7 of the chock rotation device.

It goes without saying that the roll axis 01 and the fan-shaped beam 02 need to match in the operation when lifting the rolls placed on the grinding machine and placing them on the rolling stand again. At this time, even when the roll is held between the slide arms and the claw members, centering is automatically performed.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be applied to chocks of various shapes because it is possible to automatically align rolls of different diameters and turn the lifting chock. One roll lifter can be used in common, and for this purpose, the arm of the rotation and rotation device may have two types or a plurality of extensions, and may be made replaceable.

As described above, the a-le lifter of the present invention has an extremely simple mechanism, can automatically align the roll axis and the center position of the chock rotation device, and is extremely easy to use. Therefore, its usefulness is great.

[Brief explanation of the drawing]

Figure 1 is a partial front view showing a roll lifter that is an embodiment of the present invention, Figure 2 is a view taken in the direction of arrow A in Figure 1, and Figure 3 is a cross section taken along line B-B in Figure 1. Figure 4 shows the fan beam in Figure 2 rotated by t-90 degrees, Figure 5 (A)
, (B), and (C) are diagrams illustrating a state in which centering is automatically performed when the a-ru radius is different. ]: Upper main beam 2: Hanging plate 3: Opening 4: Horizontal beam 5: Joint plate 6: Chock rotation device 7: Fan-shaped beam 8: Fan-shaped gear 9 Ni guide rollers 10: Motor 11: Gear series 12: Arm 13: Engagement part 14 Ni slide arm 15: Motor 16: Claw member 17: Pin 18: Elongated hole 19 Ni liner 20 Ni liner 21: a-rule 22: Chi, Tsuk procedure amendment document Showa t year 1999 March S day Showa ke 9 year Patent Application No. 2/20/2, Name of Invention Name: n Kito/Rii Stock/Sukie T4, Agent Address: Shigesu Building, 2-6-2 Marunouchi, Chiyoda-ku, Tokyo 330,'-,1,. 2 to 7. Amendments to be made: The following items in the specification of the present application have been amended. 1-0, 1. The scope of claims has been amended as shown in the attached sheet. 2. On page 4, line 9 to page 5, line 2, the statement ``Therefore, it is...'' should be corrected as follows. ``The roll lifter of the present invention, which has been made to suitably achieve the above object, is characterized by a roll suspension device that is provided with a pair of suspensions that are capable of opening and closing by sandwiching the rolls in the radial direction. An arm, a claw member assembled to each of these hanging arms so that it has a certain degree of freedom of movement upward from the lower limit rest position, and upper and lower parts that provide engagement surfaces for the roll of each claw member. and a pair of liners, and the pair of liners are provided so as to be inclined symmetrically upward and downward with respect to the horizontal direction and extend in the tangential direction of the roll.'' Claims: A zero lifter comprising a roll lifting device for gripping the circumferential surface of a roll, and a chock turning device applied to a check installed on the axial end side of the roll,
The roll hanging device has hanging arms that are provided to be able to expand and contract and close by holding the D-rule in the radial direction, and each of these hanging arms is assembled so that it has a degree of freedom of movement upward from a lower limit resting position. and a pair of upper and lower liners that are fixed to each of the claw members and provide an engagement opening for the O-ru, the pair of liners being symmetrically inclined upward and downward with respect to the horizontal direction. An O-le lifter characterized in that it extends in the tangential direction of the roll.

Claims (1)

[Claims] The roll lifter is equipped with a roll lifting position located below a beam member extending in the horizontal direction, and a chock turning device located at each end of the longitudinal direction. The suspension device includes a pair of suspension arms whose spacing can be expanded or contracted in the width direction of the beam member, and claw members assembled at respective positions on opposing sides of the suspension arms with a degree of freedom of movement in the vertical direction. ? r[And, looking from one end side in the longitudinal direction of the beam member, these claw members are placed in the roll tangent direction of each symmetry at the upper and lower positions with the middle perpendicular line as the line of symmetry? Have you installed an eggplant liner? Characteristic a-le lifter.