JP2000312912A - Guide rearrangement mechanism for section steel rolling mill - Google Patents

Abstract

(57) [Problem] To provide a guide changing mechanism for a section rolling mill in which a guide for guiding and guiding a material to be rolled can be quickly attached to and detached from a rolling mill while avoiding a complicated structure. (A) shift rails (12-15) provided above a pass line (P) of a rolling mill housing (11);
(B) Guide devices 16 and 17 installed on shift rails 12 to 15 and provided with guide box 20, upper and lower slide guide shafts 25 and 26, upper hoods 31 and 32, and lower hoods 33 and 34, respectively. ) Guide devices 16, 17
(D) and the shift rails 12 to 15 have:
Guide device 1 installed on shift rails 12-15
Actuators 18 and 19 for moving the actuators 6 and 17 along the pass line P are provided.
Lifting means 45, 46 from the ends of the shift rails 12-15
It is provided detachably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide rearrangement mechanism for a section rolling mill, and more particularly, to a guide changing mechanism mounted on the front and rear of a section rolling mill such as an H section steel, for guiding a material to be rolled. The present invention relates to a device for rearranging guides for maintaining good guidance.

[0002]

2. Description of the Related Art Conventionally, in a section rolling mill in which a universal mill and an edging mill are installed close to each other, a guide changing mechanism of a section rolling mill can be changed without removing a roll guide device when changing rolls. An example is disclosed in JP-A-53-6262. The guide rearrangement mechanism of this section rolling mill is composed of an intermediate guide and an entrance guide, and these guides are on one base, and the intermediate guide is in a direction perpendicular to the line.
Since the entrance guide has a configuration that can be moved in the line traveling direction, the guides are retracted without removing the guides when the rolls are changed, so that the rolls can be changed.

[0003]

However, the guide changing mechanism of the conventional section steel rolling mill has the following problems. (1) Since the base on which the intermediate guide and the entrance / exit guide slide is directly below the line, the scale is peeled off from the material to be rolled and falls on the base, which is caught by the sliding portion and cannot be moved. There was fear. (2) Since the intermediate guide and the entrance / exit guide slide on one base, one of the frequently moving guides may be worn and a step may be generated on the base, and the other guide may be caught by the step and become immovable. Was. (3) When rolling another product such as an H-section steel sheet pile or the like, it is necessary to change the interval between the housings. However, since this guide changing mechanism is an integral type, another set has to be prepared. If spare parts are also taken into consideration, a total of four units are required, which increases costs. (4) Since the guide is integrated, if any guide is damaged, the complete guide must be removed. (5) There was a case where the height of one of the guides was desired to be changed, but this was not possible because of the integral type. The present invention has been made in view of the above circumstances, and provides a guide changing mechanism for a shaped steel rolling mill capable of avoiding a complicated structure and guiding and guiding a material to be rolled quickly from a rolling mill. Aim.

[0004]

According to the present invention, there is provided a guide rearrangement mechanism for a section rolling mill, which comprises: A shift rail provided along the pass line above the pass line; and (B) a guide box installed on the shift rail, the guide box and the pass line at positions above and below the pass line of the guide box. The upper and lower slide guide shafts, which are mounted orthogonally, are slidably mounted at left and right symmetrical positions about the path line of the upper and lower slide guide shafts, and have a guide surface that contacts the outer surface of the material to be rolled. A guide device having an upper fund and a lower fund each of which has a pair,
(C) the guide device has a fixing member that can be attached to and detached from the rolling mill housing from the side, and (D) the shift rail further includes the guide device installed on the shift rail and the pass line. The guide device is provided detachably from an end of the shift rail by an elevating means.

[0005] In the above-described configuration, when the rolls are to be changed, the fixing means such as the cotter is removed to disconnect the roll from the rolling mill housing, and the guide device is automatically moved by the actuator provided on the shift rail. Perform after evacuation. Further, when performing maintenance on the guide device, the guide device can be removed from the end of the shift rail by an elevating means such as a crane or a swing arm and transported to a repair yard or the like. When the guide device moves on the shift rail, the shift rail is provided above the pass line, and since the fixing member is configured to detach and attach the guide device from the side, heat and scale from the material to be rolled are removed. It is less affected. The guide device corresponds to a conventional exit guide or entrance guide, and can be attached independently, so that when only one guide device is damaged, only the damaged one can be removed and replaced.

Here, the elevating means may be a swing arm which is provided above the rolling mill housing and is rotatable and extendable by hooking a hook provided above the guide device. is there. When the length of the shift rail is limited by the installation of the intermediate guide, the guide device is hung on the swing arm and rotated to rotate the end of the shift rail without contacting the guide device with existing equipment. Can be placed on Further, the swing arm is supported by an extendable pivot provided on the upper part of the rolling mill housing, by extending and contracting the pivot following the interval of the rolling mill housing,
Preferably, a plurality of types of shaped steel can be rolled.
Since the pivot supporting the swing arm can be extended and contracted, the position of the swing arm does not shift even when the interval between the rolling mill housings changes, so that the step change can be easily performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

As shown in FIG. 1, a guide changing mechanism 10 for a section steel rolling mill according to one embodiment of the present invention includes shift rails 12 to 15 provided on a rolling mill housing 11,
An exit guide device 16 which is an example of a guide device installed on the shift rails 12 and 13;
Guide device 1 which is an example of a guide device installed in a building
7 and a fixing member (not shown) for fixing the exit guide device 16 and the entrance guide device 17 from the side. The details will be described below.

As shown in FIG. 2, the shift rails 12 and 13 on which the exit guide device 16 is installed are provided on the left and right sides above the pass line P in parallel with the pass line P. Hydraulic cylinders 18, 19, which are examples of actuators, are provided outside the shift rails 12, 13, respectively.
Are provided at the leading ends of the hydraulic cylinders 18 and 19, respectively, and the notch recesses 21 and 22 provided on both sides of the upper part of the guide box 20 of the outlet guide device 16 are respectively fitted to the forward and backward bracket convex parts 23 and 24. have. The notch notches 21, 22 are moved forward and backward bracket protrusions 23, 24.
The guide box 20 can be advanced or retracted along the pass line P by operating the hydraulic cylinders 18 and 19 after fitting into the. Guide box 20
Above and below the pass line P, the upper and lower slide guide shafts 25,
26 are attached.

The upper and lower slide guide shafts 25, 2
The upper and lower hoods 31, 32 and 33, 3 which have guide surfaces 27 to 30 in contact with the outer surface of the material to be rolled, respectively,
4 is slidably mounted. In addition, upper fund 3
In the front portions of the first and second lower hoods 33 and 34, there are provided groove-shaped engaging portions 35 to 38, respectively. And the guide box 20, the upper and lower slide guide shafts 2
5, 26, upper fund 31, 32, lower fund 33, 3
4 constitutes a guide device (an exit guide device 16 and an entrance guide device 17). An adjusting device (not shown) provided on the rolling mill housing 11 is fitted into the hooks 35 to 38, and opens and closes the upper and lower hoods 31, 32 and 33, 34 in the left-right direction according to the shape of the material to be rolled. Is possible. A hook 39 is provided on the upper part of the guide box 20.
Are attached to each other in a comb shape. Then, the hook 39 is hung by overhead cranes 45, 46 as an example of a lifting / lowering means, lifted, and moved to move the exit guide device 16 to the shift rails 12, 13.
Can be attached and detached from the end.

On the left and right front sides of the guide box 20, fixed notches 41 and 42 are provided, respectively. The rolling mill housing 11 is provided with a hydraulic cylinder (not shown) and a cotter, which is an example of a fixing member integrated with the tip of the hydraulic cylinder. The cotter provided on the rolling mill housing 11 is fixed to the fixed notch 4 of the guide box 20.
Since the fittings 1 and 42 are fitted from both sides, the outlet guide device 16 can be easily attached to and detached from the rolling mill housing 11. FIG.
As shown in the figure, a horizontal roll 43 is vertically provided at the center of the rolling mill housing 11, and a vertical roll 4 is provided at the side thereof.
4 are provided. In addition, overhead cranes 45 and 46 are used to transfer the exit guide device 16 and the entrance guide device 17 to the shift rails 12 to 15. The structure of the entrance guide device 17 is the same as that of the exit guide device 16 and will not be described.

Next, a procedure for using the guide recombining mechanism 10 will be described. As shown in FIG. 1, the center position of the circular groove of the hook 39 of the exit guide device 16 is represented by Q1 to Q5. When attaching the exit guide device 16 to the rolling mill housing 11, first, the overhead crane 45 is hooked on the hook 39 of the exit guide device 16, the exit guide device 16 is suspended from the repair yard, and lowered from Q1 to Q2. . The height of Q2 at this time is determined by the notch recesses 21 and 22 of the guide box 20 of the exit guide device 16.
Of the shift rails 12 and 13 is higher than the height of the upper ends of the projections 23 and 24 of the brackets 23 and 24. Next, the exit guide device 16 is moved horizontally from the position Q2 to the position Q3 and then lowered from the position Q3 to the position Q4, and the exit guide device 16 is placed on the shift rails 12 and 13. At this time, it is confirmed that the notch concave portions 21 and 22 have been fitted into the forward and backward bracket convex portions 23 and 24.
After the confirmation, the overhead crane 45 is removed from the hook 39. FIG.
Shows the state when the overhead crane 45 is detached from the hook 39. Then, the outlet guide device 16 is moved to the position Q5 (installation position) by operating the hydraulic cylinders 18, 19 provided on the shift rails 12, 13. After the movement, the fixing notches 41 and 42 are fixed with a cotter, and the adjusting device is fitted into and fixed to the hooks 35 to 38 of the upper and lower hoods 31 and 32 and the lower hoods 33 and 34. The hydraulic cylinders 18 and 19 have built-in linear sensors.
The exit guide device 16 can be moved to an accurate position.

When the horizontal roll 43 and the vertical roll 44 are rearranged, the fixing of the exit guide device 16 is released, and then the hydraulic cylinders 18 and 19 are operated to move from the position Q5 to the position Q4. After the end of the roll changing operation, the outlet guide device 16 is fixed by moving from the position Q4 to the position Q5 again. As described above, the exit guide device 16 can automatically advance and retreat along the shift rails 12 and 13, so that it is not necessary to remove the exit guide device 16, and the roll changing operation can be performed quickly. When removing the outlet guide device 16 for repair or the like, first, the fixation of the outlet guide device 16 is released, and then the hydraulic cylinders 18 and 19 are released.
Is operated to move from the position of Q5 to the position of Q4. Then, the overhead crane 45 is hooked on the hook 39, and can be moved by the overhead crane 45 in the order of Q3, Q2, and Q1 to the repair yard. In addition, about the entrance guide device 17, the exit guide device 1
Other steps are the same, except that the moving direction is the same as that of No. 6, and the description is omitted.

Next, a guide changing mechanism 10a according to a modification of the above embodiment will be described. As shown in FIG. 3, an intermediate guide 47 that is movable in a direction orthogonal to the pass line R is provided between the adjacent rolling mills, and the shift rails 48 and 49 are used to prevent the intermediate rails 47 from contacting with each other. The length is shorter than the shift rails 12 to 15 according to the embodiment. Further, the exit guide device 50 and the entrance guide device 51 remove the hook member 40 of the exit guide device 16 and the entrance guide device 17 according to the embodiment, and instead of the hooks 52a, 52b, as shown in FIG.
A plurality of combs 53a and 53b are provided.
With engaging members 54 and 55 having a height higher than 0,
The other parts of the configuration are the same as those of the exit guide device 16 and the entrance guide device 17, and the description thereof is omitted. Further, expandable and contractible separators 57 to 60 are provided in the direction orthogonal to the pass line R of the rolling mill housing 56, and the width of the rolling mill housing 56 in the direction orthogonal to the pass line R is made variable to change the width of the horizontal roll 56a. To be able to respond to.

In FIG. 3, at the upper part of the rolling mill housing 56, pivot fixing portions 63, 6 supporting pivots 61, 62 are provided.
4 and a swing cylinder 8 with pivots 61 and 62 as fulcrums.
It has swing arms 69 and 70 which are examples of lifting means having rotating arms 67 and 68 provided with lifting cylinders 65 and 66 which are rotatable and extendable by 0 and 81, respectively. Swing arm 67 of swing arm 69, 70,
68 are bent in L-shape, respectively, so that hooks 52b, 53b provided on the upper portions of the exit guide device 50 and the entrance guide device 51 can be hooked, and the swing arms 69, 70 The guide device 50 and the entrance guide device 51 are rotatable and extendable in a hooked state. In addition, ceiling cranes 73 and 74 are installed on the ceiling, hook the hooks 52a, and the exit guide device 50 and the entrance guide device 51 conveyed from the repair yard.
To the swing arms 69, 70.

In order to prevent contact between the intermediate guide 47 and the shift rail 48, the length of the shift rail 48 is limited, and the separator 57 is provided above the shift rail 48. Can not be placed on Therefore, the exit guide device 50 is temporarily stored in the swing arm 69, and the swing arm 69
The exit guide device 50 is moved in an arc shape by being rotated by the swing cylinder 80, and is mounted on the shift rail 48. Hereinafter, a method of using the guide changing mechanism 10a will be described with reference to FIG.
The center positions of the circular grooves of the hooks 52a and 52b of the exit guide device 50 are S1 to S5, and the midpoints (hereinafter, referred to as tip positions) of the respective front ends of the upper and lower hoods are T1 to T.
It shall be represented by 5. When attaching the exit guide device 50 to the rolling mill housing 56, first, the intermediate guide 47
Is retracted in a direction orthogonal to the pass line R. Then, the overhead crane 73 is connected to the hook 5 of the exit guide device 50.
2a, the exit guide device 50 is suspended from the repair yard, and lowered from the position S1 to the position S2.

The position of S2 is the exit guide device 5 shown in FIG.
This is the same position as the position of 0. The swing arm 69 is on standby with its tip positioned at the position of S2, and the exit guide device 50 is transferred from the overhead crane 73 to the swing arm 69 at the position of S2. After confirming that the hook 52b of the exit guide device 50 is securely hooked on the swing arm 69, the overhead crane 73 is removed from the exit guide device 50. FIG. 3 shows a state when the overhead crane 73 is detached from the hook 52a. After removing the overhead crane 73, the swing arm 69 is rotated about the pivot 61 by the swing cylinder 80 to move the exit guide device 50 from the position S2 to the position S3. At this time, the tip position of the exit guide device 50 moves from T2 to T3,
The swing arm 69 does not come into contact with the horizontal roll 56a because the error of the moving position is smaller than that of the overhead crane 73.

When the swing arm 69 is rotated to the position S3, the exit guide device 50 is located above the end of the shift rail 48, and the rotation arm 67 of the swing arm 69 is directed vertically downward. When the elevating cylinder 65 is extended at this position, the exit guide device 50 is lowered from the position S3 to the position S4 and mounted on the shift rail 48. At this time, the hydraulic cylinders 18, 1 provided on the shift rail
9, the exit guide device 5
After the 0 notch notches 21 and 22 are fitted, the elevating cylinder 65 is further extended, and the turning arm 67 is turned to remove it from the hook 52b. Swing arm 69 hook 52
After removing from the position b, the hydraulic cylinders 18 and 19 provided on the shift rail 48 are operated to move the outlet guide device 50 from the position S4 to the position S5. After being moved to the position of S5, the components are fixed in the same procedure as in the above-described embodiment, and the intermediate guide 47 is returned to the installation position and fixed, thereby completing the rearrangement. Shift hydraulic cylinder 1
8, 19, the lifting cylinder 65, and the swing cylinder 80 are all provided with sensors, so that when the outlet guide device 50 is moved between S2 and S5, the rearrangement can be automatically performed.

In this way, even when the exit guide device 50 is installed in a narrow place, by using the swing arm 69, it is possible to quickly attach the existing equipment without contacting the existing equipment. When the outlet guide device 50 is to be removed, it can be removed in a procedure substantially opposite to the above procedure, and a description thereof will be omitted. Also, the entrance guide device 51
For the installation and removal procedure of the exit guide device 5
Other procedures are the same, except that the direction of movement is opposite to 0, so the description is omitted.

Next, a case where the interval between the rolling mill housings 56 is changed will be described with reference to FIGS. In the rolling mill in which the interval between the rolling mill housings 56 can be changed, the swing arms 69 and 70 are supported on telescopic pivots 61a and 62a provided on the upper part of the rolling mill housing 56, and the pivots 61a and 62b are connected to the rolling mill housing. 56
, The plurality of types of shaped steel, for example, the H-shaped steel 76 and the steel sheet pile 77 can be rolled. As shown in FIG. 6, when the interval between the rolling mill housing 56 and the hydraulic cylinder 75 is reduced, the outlet guide device 16 (and the inlet guide device 17) described in the above embodiment is used to form an H-shape. The steel 76 can be rolled. When the steel sheet pile 77 is rolled by changing the rolls, the interval is widened by the hydraulic cylinder 75, and the outlet guide device 16 and the inlet guide device 17 (and the inlet guide device 17) are formed according to the procedure described in the above embodiment. Replace with 78. As described above, the separators 57 to 60 are arranged as a supporting device when the interval of the rolling mill housing 56 is changed by the hydraulic cylinder 75, but the inlet guide device 17, the outlet guide device 16, and the shaped steel guide device 78 are provided. Since the pivots 61a and 62a for rotating via the swing arms 69 and 70 are also configured to expand and contract, the step change time can be reduced.

[0021]

According to the guide re-arrangement mechanism of the section steel rolling mill according to the first to third aspects, the shift rail is provided above the pass line, and the fixing member detaches the guide device from the side. The movable part can be protected by reducing the influence of heat and scale from the rolled material. Further, since the shift rail is provided with an actuator, the guide device is retracted to the end of the shift rail during the roll changing operation, so that the roll can be changed without removing the guide device. Position adjustment during use of the device can be performed quickly.
The guide device can be moved to the end of the shift rail and the guide device can be moved up and down by a crane or the like, so that the guide device can be attached and detached with a simple structure, without affecting the rolling mill body and other guide devices. Maintenance can be performed. In particular, in the guide rearranging mechanism according to the second aspect, since a swing arm that can rotate and expand and contract is provided at the upper part of the rolling mill housing, the guide device can be used when the length of the shift rail is limited. Can be mounted on the end of the shift rail without contacting the equipment. In the guide rearrangement mechanism of the section rolling mill according to claim 3, the pivot provided on the upper part of the rolling mill housing and supporting the swing arm is extendable and contractable even if the interval between the rolling mill housings changes. Since the guide device can be mounted by utilizing the same and a plurality of types of shaped steel can be rolled, the guide device can be quickly attached and detached regardless of the type of the shaped steel.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a guide changing mechanism of a section steel rolling mill according to an embodiment of the present invention.

FIG. 2 is a perspective view of an exit guide device of the guide changing mechanism.

FIG. 3 is a side sectional view of a guide changing mechanism of a section steel rolling mill according to a modification of the embodiment of the present invention.

FIG. 4 is a perspective view of a guide device of the guide changing mechanism.

FIG. 5 is an explanatory diagram of a method of using a guide changing mechanism.

FIG. 6 is a front view of the guide rearrangement mechanism in a case where a distance between rolling mill housings is small.

FIG. 7 is a front view of the guide rearrangement mechanism in a case where a distance between rolling mill housings is large.

[Description of Signs] 10: Guide rearrangement mechanism, 10a: Guide rearrangement mechanism,
11: rolling mill housing, 12 to 15: shift rail,
16: Outlet guide device (guide device), 17: Inlet guide device (guide device), 18, 19: hydraulic cylinder (actuator), 20: guide box, 21, 22:
Hook notch recesses, 23, 24: forward and backward bracket projections, 2
5: upper slide guide shaft, 26: lower slide guide shaft,
27-30: guide surface, 31, 32: upper fund, 33,
34: Lower fund, 35 to 38: Hook, 39: Hook,
40: engaging member, 41, 42: fixed notch, 43: horizontal roll, 44: vertical roll, 45, 46: overhead crane, 47: intermediate guide, 48, 49: shift rail, 5
0: exit guide device, 51: entrance guide device, 52a,
52b, 53a, 53b: hook, 54, 55: hook member, 56: rolling mill housing, 56a: horizontal roll, 5
7 to 60: separator, 61, 61a, 62, 62
a: Axis, 63, 64: Axis fixed part, 65, 66: Elevating cylinder, 67, 68: Rotating arm, 69, 70: Swing arm (elevating means), 71, 72: Tip, 73, 74:
Overhead crane, 75: hydraulic cylinder, 76: H-section steel, 7
7: Steel sheet pile, 78: Shaped steel guide device, 80, 81: Swing cylinder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Rihiro Nakagawa 46-46 Nakahara, Oaza, Tobata-ku, Kitakyushu, Fukuoka Prefecture Within Nippon Steel Plant Design Co., Ltd. 59 Inside Nippon Steel Plant Design Co., Ltd.

Claims (3)

[Claims] 1. A guide rearrangement mechanism provided in a shape rolling mill, comprising: (A) a shift rail provided along a pass line above a pass line of a rolling mill housing; The upper and lower slide guide shafts, which are mounted on a shift rail and are mounted in a state perpendicular to the pass line at positions above and below the pass line of the guide box, the guide box, and the upper and lower slide guide shafts (C) a guide device which is slidably attached to a symmetrical position about the pass line, has a guide surface in contact with the outer surface of the material to be rolled, and has a pair of upper and lower hoods; (D) a fixing member which is detachably attached to the rolling mill housing from the side of the rolling mill housing, and (D) the shift rail further includes a guide member mounted on the shift rail. An actuator for moving the guide device back and forth along the pass line is provided, and the guide device is detachably provided from an end of the shift rail by an elevating means. Recombination mechanism. 2. The guide changing mechanism according to claim 1, wherein said elevating means is provided on an upper portion of said rolling mill housing and hooks a hook provided on an upper portion of said guide device. A guide rearrangement mechanism for a section steel rolling mill, which is a swing arm that can rotate and extend and contract. 3. The guide rearrangement mechanism of a section rolling mill according to claim 2, wherein the swing arm is supported by an extendable pivot provided on an upper portion of the rolling mill housing, and the swing arm is connected to the rolling mill housing. The guide rearrangement mechanism of a section steel rolling mill that enables rolling of a plurality of types of section steel by expanding and contracting by following the distance of the section.