JPH1085821A - Slab transporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent heat transfer from a high-temp. steel sheet to a roller table and truck in the truck which is provided with the roller table for transporting the high-temp. slab which is sent out from a continuous casting device and cut into a proper length to a flaw removing device. SOLUTION: Lifting mechanisms 13 for lifting the slab 11 which is transported onto the roller table 12 over the roller table are provided between the rollers of the roller table 12. Each lifting mechanism 13 consists of guides, supporting members 16 which are elevated and lowered by being guided with the guides, hydraulic cylinders 17 for elevating and lowering the supporting members 16. A cooling device B for flowing cooling water to cool the supporting member 16 is provided in the supporting member 16 and the supporting member 16 is cooled. The supporting member 16 and the end of the piston rod of the hydraulic cylinder 17 are connected with a ball joint and the supporting member 16 is movable in an arbitrary direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a billet conveying device,
For example, a steel slab sent from a continuous casting facility and cut to an appropriate length is transported to a flaw removal position or pickling device to remove flaws and scale on the surface, to a heating furnace for heat treatment, or to a yard. The present invention relates to a trolley for transporting steel chips, a reversing trolley arranged on a flaw removing device, for reversing the upper and lower surfaces of the steel slab, and a transport device for steel slabs such as a transport device installed on the flaw removing device.

[0002]

2. Description of the Related Art Taking a continuously cast steel slab as an example,
The continuously cast steel slab is sent to a flaw removing device in order to prevent the oscillation mark on the surface from remaining as a pattern in a subsequent hot rolling process depending on the type of steel, and is subjected to a grinder treatment to grind a surface layer portion. FIG. 1 shows a layout of an apparatus for processing a continuously cast steel slab. The steel slab sent out from the continuous casting facility 1 and cut into an appropriate length requires or does not require flaw removal depending on the type of steel. Those that need to be flaw-removed are loaded on the trolley 2 and carried to the flaw-removing device 3. The flaw removing device 3 is 4 in the illustrated one.
The base slab is subjected to grinder treatment of the surface layer of the slab, and the slab that has been ground on one side is transferred to the reversing carriage 4 by the transport device 5, and turned over, and then returned to the flaw removal device. And grind another surface. The steel slab whose both surfaces have been subjected to the grinder treatment in this manner is transferred to the carriage 2 and conveyed to the next step or yard. On the other hand, the steel pieces that do not require flaw removal are transferred to the carriage 2 through a flaw inspection step, and conveyed to the next step or yard similarly to the ground steel pieces. As described above, the billets sent out from the continuous casting equipment are loaded on a cart and then sent to a flaw removing device, a yard, etc. It was performed by operation, that is, by carrying the steel slab by grasping the billet from both sides with a tong suspended from a crane.

[0007] Carrying a billet with a crane is troublesome and requires personnel. Therefore, in the present invention, a roller table is provided in a billet conveying device to try to carry in and out billets. One of the problems in this case is that the billet is sent from a continuous casting facility. In addition, when the steel slab is at a high temperature, heat transfer to the roller undesirably affects the roller bearing and the drive system and the drive system of a transport device such as a bogie. In order to solve this problem, cooling by passing cooling water through each roller of the roller table complicates the structure of each roller, complicates the structure of the cooling device, and increases the cost. When the billet is to be conveyed on the roller table, if the billet is placed on the roller table with a bias or is placed diagonally, smooth movement cannot be performed, or the billet is conveyed diagonally. , It comes out of the roller table. Therefore, it is desirable to provide a centering device to center and correct the direction of the billet. However, when the billet is pushed and moved in the axial direction of the roller during centering, roller flaws may occur on the billet. There is.

[0003] A first object of the present invention is to provide a billet conveying device in which heat transfer from a high-temperature billet to a roller table or a carriage is prevented. An object of the present invention is to provide a billet conveying device capable of preventing occurrence of roller flaws at the time of centering.

[0004]

A transfer device for achieving the first object has a roller table for carrying in and out a billet, and a lifting mechanism for lifting the billet carried in the roller table onto the roller table. The mechanism includes a vertically movable support member and an operating mechanism for vertically moving the support member. The support member is provided with a cooling unit, or provided with a heat insulating unit that prevents heat transfer to the operating unit, or provided with both. It is characterized by the following.

[0005] According to the present apparatus, when the billet is carried in and out, the support member is lowered from the roller table so as not to hinder the conveyance by the roller table. After being carried into the roller table, the support member lifts the steel slab onto the roller table, and makes the steel piece out of contact with the roller table, thereby preventing heat conduction to the roller table and the roller table base. A transport device for achieving the second object includes a roller table for loading and unloading a steel piece, a lifting mechanism for lifting the steel piece transported on the roller table onto the roller table, and a steel mechanism lifted by the lifting mechanism. It has a centering mechanism for centering the piece by pushing it in from the side, and the lifting mechanism comprises a vertically movable supporting member and an operating mechanism for vertically moving the supporting member. According to this device, the centering of the billet is lifted on the roller table,
Since the process is performed in a state of non-contact with the roller table, no roller flaw is generated at the time of centering. In each of the above transporting devices, it is desirable that the supporting member be provided with a guide so that it can be moved up and down reliably and stably particularly with the steel plate supported. Preferably, the support member is also provided with a roller for supporting the billet. Since the steel slab is supported by the roller in a line contact state, a flaw is less likely to occur at the time of centering than when the steel slab is supported by the support member by surface contact.

Normally, a hydraulic cylinder is used as the operating means. However, when the above-mentioned guide is provided for elevating and lowering the support member, the piston rod end and the support member are preferably connected by a ball joint or a universal joint. desirable. Even if the direction of the line of action of the piston rod (the direction in which the support member moves up and down) does not match the direction in which the support member moves up and down, the support member can be guided up and down by being guided by the guide. The manufacturing accuracy can be relaxed, and the support member can be moved up and down smoothly without any trouble even if the two parts are rattled due to wear.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A truck A as a transfer device shown in FIGS. 2 and 3 is used as a truck 2 of the device shown in FIG. 1, and has a billet on its upper surface in a direction perpendicular to the traveling direction of the truck A. A pair of roller tables 12 for transporting the slab 11 is provided so that the slab can be transferred between the cart A and the flaw removing device 3. The slab 11 is placed between the rollers of each roller table 12 on the roller table 12. And a pair of centering mechanisms 14 of the steel slab 11 lifted by the lifting mechanism 13 are provided on the left and right sides of each roller table 12.

Each of the lifting mechanisms 13 includes a guide 15 which is arranged side by side in front and rear of the carriage A,
A support member 16 having a trapezoidal cutout at the lower side and a roller 10 supported on the support member 16
And a hydraulic cylinder 17 as an operating mechanism attached to the carriage A and moving the support member 16 up and down. A cooling device B for passing cooling water for cooling the support member 16 above the support member 16, that is, As shown in FIG. 4, a gutter 18 attached to the front and rear upper portions of the support member, a through hole 19 formed in the support member 16 to connect between gutters, and a rubber hose 20 connected to the gutter 18 are provided. A cooling device is provided.

The hydraulic cylinder 17 and the support member 16
The connection between the piston rod 21 and the support member 16 by a ball joint allows the support member 16 to move in any direction. As shown in FIG. 5, the ball joint is attached to the end of the piston rod and fixed with a pin 22.
The cap 23 has a spherical upper surface, a recess 24 provided in the support member 16 and fitted with the cap 23, and a stopper 25 fixed to the support member 16 to prevent the cap 23 from coming off. ing. Centering mechanism 14
Consists of a rotating shaft 27 supported so as to be able to move up and down, an arm 28 fixed to the end of the rotating shaft, and a centering roller 29 supported at the tip of the arm. The rotating shaft 27 is not shown in the lower part, It has spline teeth and meshes with a pinion which is rotationally driven by a motor via a speed reducer, and a lower end thereof is engaged with a piston rod end of a cylinder.
In this way, the centering mechanism lowers the roller 28 below the roller table so that the arm 28 can rotate and move up and down so as not to hinder the conveyance of the billet by the roller table 12, and is pushed up by the piston rod of the cylinder during centering. The arm 28 provided on the front and rear sides of the billet at the time of ascending pivots in a closing direction so as to push the billet from the side to perform centering. Has become.

[0010]

The present invention is configured as described above and has the following effects. According to the transfer device of the first aspect,
The hot slab transferred to the carriage is lifted onto the roller table by the lifting mechanism, and the supporting member of the lifting mechanism is cooled by the cooling means, so that less heat is transferred to the roller table and the carriage, and the supporting member is Since only cooling is required, the configuration of the cooling means can be simplified.

According to the second aspect of the present invention, heat transfer to the roller table and the carriage can be reduced without providing a cooling means. According to the transfer device of the third aspect, heat transfer to the roller table and the carriage can be further reduced. According to the transfer device according to the fourth and fifth aspects, it is possible to prevent the occurrence of roller flaws due to the slab rubbing with the roller table during centering.
If the centering mechanism can be moved up and down as in the transfer device according to claim 6, even if the centering mechanism is provided on the roller table, the roller table does not hinder the transfer of the billet. If the support member is provided with a roller to support the steel slab as in the transfer device according to the seventh aspect, the steel slab is less likely to have flaws during centering. If the guide for the support member is provided as in the transfer device according to claim 8, the support member can be moved up and down reliably and stably.

If the support member and the piston rod of the cylinder are connected by a ball joint or a universal joint as in the cart of the ninth aspect, even if the directions in which the piston rod and the support member move up and down do not coincide with each other. The support member can move up and down while tilting along the guide due to the advance and retreat of the piston rod, so that the support member can be moved up and down smoothly, and the manufacturing accuracy of the support member and the guide can be reduced.

[Brief description of the drawings]

FIG. 1 is a layout view of an apparatus for processing a continuously cast billet.

FIG. 2 is a plan view of a truck according to the present invention.

FIG. 3 is a schematic front view of the bogie.

FIG. 4 is a perspective view of a support member.

FIG. 5 is a sectional view of a lifting mechanism.

[Explanation of symbols]

1. Continuous casting equipment 2, A. Dolly 3. Defect removal device 4. Reversing dolly 5. Transporting device 10. Roller 11. Steel billet 12. Roller table 13. Lifting mechanism 14. Centering mechanism 15, Guide 16, Support member 17, Hydraulic cylinder 18, Gutter 19, Through hole 20, Rubber hose 21, Piston rod 22, Pin 23, Cap 24, Concave 25 ... Stopper 27..Rotating shaft 28..Arm 29..Centering roller B..Cooling device

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hidetoshi Murakami 1-3-16 Nakadori, Kure-shi, Hiroshima Nisshin Koki Co., Ltd. (72) Inventor Sotsuo Yamaguchi 1-3-3 Nakadori, Kure-shi, Hiroshima No. 16 Nissin Koki Co., Ltd. (72) Inventor Mikio Hayase 1-3-16 Nakadori, Kure City, Hiroshima Prefecture Nissin Koki Co., Ltd.

Claims (9)

[Claims] 1. A roller table for carrying in and out a billet, and a lifting mechanism for lifting a bill carried into the roller table onto the roller table, wherein the lifting mechanism comprises:
A billet transfer device comprising a support member capable of moving up and down and an operating mechanism for moving the support member up and down, wherein the support member is provided with cooling means for cooling the member. 2. A roller table for carrying in and out a billet, and a lifting mechanism for lifting the billet carried into the roller table onto the roller table, wherein the lifting mechanism comprises:
A billet transfer device comprising a support member capable of moving up and down and an operating mechanism for moving the support member up and down, wherein the support member is provided with a heat insulating means for preventing heat transfer to a roller table base. 3. The billet conveying device according to claim 1, further comprising a heat insulating means for preventing heat transfer to the roller table base. 4. The billet conveying apparatus according to claim 1, further comprising a centering mechanism for centering the billet lifted to the lifting mechanism by pushing the billet from the side. 5. A roller table for carrying in and out a billet, a lifting mechanism for lifting the billet conveyed on the roller table onto the roller table, and pushing the billet lifted by the lifting mechanism from the side to centering. And a lifting mechanism including a support member capable of moving up and down and an operating mechanism for moving the support member up and down. 6. The billet conveying apparatus according to claim 4, wherein the centering mechanism is movable up and down on a roller table. 7. The billet conveying device according to claim 4, wherein the lifting mechanism has a roller for supporting the billet. 8. The billet conveying apparatus according to claim 1, further comprising a guide for guiding the lifting and lowering of the support member. 9. The billet conveying apparatus according to claim 8, wherein the operating means is a cylinder, and the piston rod end and the support member are connected by a ball joint or a universal joint.