JPH09314213A - Method and equipment for returning roll of steel carrying table on which traveling working truck is installed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the regular rolling by appropriately moving a separation cam plate to return a table roll to be detached from a lower part of a traveling working truck to the position of the prescribed rolling line. SOLUTION: A cam plate 2 of a traveling working truck 1 of rough bar is of the structure capable of separating a cam plate 2b on a rough bar outlet side from a cam plate 2a on a body side. As the separated cam plate 2b is elevated, cam rolls 4b, 4c are also elevated, and table rolls 3b, 3c linked thereto are moved upward and returned to the original position. In this condition, the distance between a holding roll 10 and a table roll 3d in the traveling working truck enables a rough bar to be received by the table rolls 3b, 3c before sagging of a tip part of the rough bar is generated, and no problems are generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel material conveying machine in which a sheet bar continuously transferred on a steel material conveying table roll is pressed down by a cam plate such as a traveling processing carriage for processing the steel material conveying table roll. The present invention relates to a table roll returning method and apparatus.

[0002]

2. Description of the Related Art In recent years, in a hot rolling process, a sheet bar obtained by roughly rolling a slab (hereinafter referred to as a rough bar) is partially cut by a hot-rolling machine provided on a hot rolling line. Alternatively, the joining of the end faces of the rough bars has come to be performed. Regarding the joining of the rough bars, in the conventional hot-rolled steel sheet manufacturing, since rolling is performed for each slab, the leading end and the trailing end of the steel sheet are wound up after the steel sheet exits the finishing rolling mill. However, there was no choice but to become a so-called unsteady part in a tensionless state. Therefore, the steel plate corresponding to this portion is inevitably deteriorated in surface quality and shape quality such as scratches, defective shape, defective width, and defective thickness.

Under such circumstances, a so-called hot rolling continuous process has been attempted, in which a plurality of rough bars after rough rolling are sequentially joined and hot rolled continuously at a predetermined speed. This hot rolling continuous process generally includes a step of supplying a rough bar, a step of cutting the leading end and the trailing end of the rough bar, a trailing end of the leading rough bar and a leading end of the trailing rough bar while running. , The process of clamping and joining them together, the hot-finishing rolling process to bring the steel sheet for rolling to a predetermined size in a predetermined rolling schedule by a plurality of stands, and the steel plate that has gone through the hot finish rolling process is cooled and wound. It is composed of a taking step, a hot finish rolling step and a winding step, and a running cutting division step of cutting the steel sheet in a predetermined weight or length unit.

Various proposals have been made as a method and apparatus for joining the rough bars for this purpose. For example, JP-A-7
No. 1007 discloses that the head side of each balance cylinder and the accumulator are pressurized with a predetermined pressure to close the on-off valve, and the joining machine is moved to the inlet end to wait. , The trailing edge of the preceding plate,
When the leading edge of the trailing plate is fed, the joining machine moves at the same speed as the rolling material advancing speed, is clamped by the inlet and outlet clamps, and both are joined by the time the joining machine reaches the outlet end. The plate edge is heated by an inductor and pressure-bonded.The guide rail moves as the welding machine moves, and the guide roll and the lifting table roll are moved up and down in order to avoid collision between the welding machine and the table roll. The plates are joined together. On the other hand, there is a hot-rolled steel sheet manufacturing process that does not go through the hot-rolling continuous process as described above, depending on the rolling size, rolling type and the like.

[0005]

In the rolling equipment having the above-mentioned running bars for joining the rough bars or for cutting the rough bars, the joining of the rough bars may not be possible in some cases. For example, maintenance, inspection, and repair of the traveling processing cart. Further, it is a case where cutting is performed without joining and rolling is performed later. In such a case, the rough bar must be passed over the rolls of the traveling work carriage in an unbonded or cut state while the traveling work carriage is stopped on the rolling equipment line.

Since the steel material conveying table roll (hereinafter, simply referred to as a table roll) located on the rough bar exit side of the traveling working carriage is in a state of being pushed down from the rolling line,
When the coarse bar is transferred, the tip end of the coarse bar passes over the roll inside the traveling carriage and if there is too wide an interval to reach the table roll that is not pressed down by the cam plate, the coarse bar is If the tip of the bar hangs down, it cannot be placed on the table roll, making it impossible to pass the plate.

By the way, according to the above-mentioned joining machine disclosed in Japanese Patent Laid-Open No. 7-1007, the existing table rolls are sequentially pushed down from the rolling line by the guide rails as the joining machine moves, and after the joining machine is moved. On the contrary, it is configured to be sequentially pushed up to return to the original position. FIG. 5 shows the movement of the cam plate (guide rail) of the traveling machining truck having the same function as this.

In FIG. 5, the table roll 3 is pushed down from a predetermined position on the rolling line A by a cam plate 2 so that the table roll 3 will not be hindered at the time of joining under the running carriage 1 (only the lower part is shown for explanation). . The principle of descending the table roll 3 is that the cam roll 4 and the table roll 3 are
Is attached to the rotary shaft 5 by levers 6 and 7, and both are connected, so that when the cam roll 4 is pushed down by the cam plate 2, the table roll 3 descends accordingly. Conversely, when the cam roll 4 is disengaged from the cam plate 2, the cam roll 4 returns to its original position accordingly.

Normally, the distance between the table rolls 3 is kept at L ₀ , but depending on the location of the traveling machining truck (the waiting stop position of the traveling truck is not always the standby position during machining). (Not limited) The distance is L on the rough bar entry side.
₁ , L ₂ on the output side, and the interval L required for transporting the rough bar
_Since it greatly exceeds ₀ , the above-mentioned inconvenient situation occurs. The present invention provides a method and a device for returning a table roll in a position out of the bottom of a running work carriage in a rolling installation having a running work carriage that solves the above-mentioned conventional problems. It is a thing.

[0010]

The present invention has been made to solve the above problems, and the means are as follows. (1) When a rough bar is transferred by a rolling facility having a rough bar running car that is installed on a continuous hot rolling line for steel plates, it is pushed down by a cam plate installed below the running bar. Among the table rolls, only the table rolls which are located under the traveling work trolley are returned to the normal position of the rough bar transport line. How to return. (2) Among the table rolls pushed down by the cam plate installed at the lower part of the running processing bogie, the table roll located at a position outside the running working bogie on the coarse bar exit side of the running running bogie, A method for returning a roll of a steel material transfer table equipped with a running carriage that is characterized by returning the normal position of the rough bar transfer line.

(3) Of the table rolls pushed down by the cam plate installed in the lower portion of the running processing carriage, the positions outside the running working carriage on the rough bar exit side and the entry side of the running working carriage. A method for returning a roll of a steel material conveying table equipped with a carriage for traveling processing, characterized in that the table roll in is returned to the normal position of the rough bar conveying line. (4) In the rough bar running machining carriage having the cam plate, the lower cam plate located at a position outside the running machining carriage on the rough bar exit side of the running mill is configured to be separable from the cam plate body. A roll returning device for a steel material transport table equipped with a traveling truck that is characterized in that

(5) In a rough bar running machining carriage having a cam plate, a lower cam plate located at a position outside the running machining carriage on the rough bar exit side and the entering side of the running machining carriage is a cam plate body. A roll returning device for a steel material transport table equipped with a traveling truck that is separable from the above. (6) As a moving mechanism of the separation cam plate, a raising / lowering cylinder is provided via a support member in a part of the main body of the rough bar running machine located above the separation cam plate, and the lower end portion of the cylinder is raised / lowered. A steel material conveyance provided with the traveling processing carriage according to (4) or (5), characterized in that the steel material is fixed to the upper part of the separation cam plate via a member and the separation cam plate is pulled upward. Table roll recovery device.

(7) The elevating member comprises a vertical guide column attached to a part of the main body of the traveling bar for rough bar processing, and an elevating roll installed by sandwiching the guide column from both sides,
A roll-returning device for a steel material conveying table, which is provided with the running carriage as set forth in (6), characterized in that the separation cam plate is pulled up. (8) As a moving mechanism of the separation cam plate, a driving cylinder is provided on the cam plate body side close to the separation cam plate, and an end portion of the cylinder is connected to a part of the upper portion of the separation cam plate via a link mechanism. A roll-returning device for a steel material conveying table, which is fixed and is capable of moving the separation cam plate obliquely upward, provided with the traveling processing carriage described in (4) or (5) above.

(9) As a moving mechanism for the separation cam plate, a driving cylinder is provided on the cam plate body side near the separation cam plate, and an end portion of the cylinder is part of a side portion of the separation cam plate. It is characterized in that the separation cam plate can be moved in the horizontal direction.
A roll-returning device for a steel material conveying table, which is provided with the carriage for running work according to (4) or (5). (10) As a guide mechanism for the separation cam plate, a horizontal guide groove is provided in a part of the cam plate body side, and a protrusion that fits into the guide groove is attached to a part of the separation cam plate.
A roll returning device for a steel material conveying table provided with the traveling trolley according to (9) above, characterized in that the separation cam plate is ensured to move horizontally.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, the present invention facilitates the transportation of a rough bar when the rough bar running carriage is provided on the rolling equipment line when the rough bar is not joined or when the rough bar is cut. It was made possible. That is, since an appropriate number of rolls are held in the running carriage at an interval sufficient to hold the rough bar, there is a problem in transferring the rough bar regardless of whether the rough bar is joined or cut. Absent.

However, when the coarse bar is not joined or is cut, the table roll located outside the running carriage is removed.
It must be returned to the rolling line so that it does not hinder the transfer of the rough bar. The table roll located under the running carriage is pushed down by the cam plate.However, since the table roll is constantly applied with a force that allows it to return to a predetermined position on the rolling line, the table roll is pushed down. If the force is released from the lowered cam plate, the cam plate can be returned to the predetermined position by itself.

Therefore, the inventors of the present invention, as a measure for returning the table roll located under the running carriage that is being pushed down by the cam plate, set the rough bar exit side or the rough bar exit side and the entrance side of the cam plate. By using a separate structure and moving the separated cam plate in the specified direction, the cam roll together with the separated cam plate can be displaced to the required position, and the table roll linked by the lever is lifted upwards and the rolling line Therefore, the present invention has been developed as a result of various studies on how to move the separation cam plate from the cam plate body side.

During the processing of the rough bar, as shown in FIG. 6, it is possible to stand by at the position where the table plate is not pushed down by the cam plate on the entry side of the rough bar S of the running carriage. In this case, even if the rough bar S is transferred and past the table roll, the rough bar can be held by the roll in the running carriage before the sagging phenomenon of the tip end of the rough bar S occurs. In addition, when the rough bars are joined by the running truck, the leading rough bar S and the trailing rough bar S
Since they are integrated with each other, even if the distance between the table rollers pushed into the cam plate is slightly large, it does not cause a problem in passing the plate.

The details of the present invention will be described below. FIGS. 1 and 2 are enlarged views of the separation end side of the cam plate according to an example of the present invention. When a similar mechanism is used before and after the cam plate, the same structure is used. Only the rear side corresponding to the output side will be described. In FIG. 1, the table roll 3 is pushed downward by the cam plate 2 located under the travel processing carriage 1 by the cam roll 4 and the levers 6 and 7 linked thereto (3a and 3b). In this state, the distance between the rough bar holding roll 10 in the running carriage and the table roll 3c existing at the steady position is smaller than the distance (L _{0 in} FIG. 5) required to normally transfer the rough bar. There is too much space (Fig. 5
L ₂ ) of the rough bar to be conveyed, it cannot be placed on the table roll 3c and transferred.

Therefore, the cam plate 2 of the rough bar running machining carriage 1 is structured so that the cam plate 2b on the rough bar exit side can be separated from the main body side cam plate 2a, and the separation cam plate 2b is moved to the upper part to move the cam roll. The table roll 3b descending by 4 is returned to the original position. At the time of returning, a bracket 13 is attached as a support member to the main body member 8 for running work carriage, and a lifting cylinder 14 is used as a moving mechanism via the bracket 13.
And an elevating member 15 having an elevating roll 12 at the end of the cylinder 14 is attached to the upper part of the separation cam plate 2b. On the other hand, a guide column 11 is provided at the lower portion of the traveling processing carriage body member 8, and the guide column 11 guides the elevating roll 12 sandwiching the guide column 11.

FIG. 2 shows a state in which the raising / lowering cylinder 14 is operated and the raising / lowering member is pulled up. The cam rolls 4b, 4c are shown as the separating cam plate 2b rises.
Also rises and table roll 3 linked to it
b and 3c also move upward and return to their original positions. In this state, the distance between the holding roll 10 and the table roll 3d in the running carriage is such that the table rolls 3b and 3c can receive the coarse bar before the tip of the coarse bar droops. Will never occur.

FIGS. 3A and 3B show the separation cam plate 2b.
Another example of the moving device of FIG. 3 is shown, in which a drive cylinder 20 as a moving mechanism of the separation cam plate 2b is attached in proximity to the separation cam plate 2b on the side of the cam plate body 2a, and an end portion thereof is linked by a link mechanism 21. The separation cam plate 2b is attached to the upper part 22 of the separation cam plate 2b near the cam plate body 2a (FIG. 3a), and the driving cylinder 20 is moved to rotate the separation cam plate 2b diagonally upward with the support shaft 23 of the link mechanism as a fulcrum. Then, along with that, the cam roller 4 also moves obliquely upward to return the table roll 3b to the original position (FIG. 3b).

Further, FIGS. 4A and 4B show still another example, in which a drive cylinder 30 as a moving mechanism of the separation cam plate 2b is provided on the side of the cam plate body 2a. And the end portion 31 is attached near the central portion of the separation cam plate 2b. on the other hand,
As a movement guide mechanism for the separation cam plate 2b, a guide groove 32 is provided in a part of the inside of the cam plate body 2a, and a protrusion 33 that fits therein is attached to a part of a side portion of the separation cam plate 2b (FIG. 4a). . By operating the drive cylinder 30 as a moving device of the separation cam plate 2b thus configured, the separation cam plate 2b is pulled in the horizontal direction (left direction in the drawing) to the inside of the cam plate body 2a, and the cam roll 4 is accordingly drawn. Can be raised along the lower surface of the cam plate 2b, and the table roll 2b linked to it can be returned to the original position (FIG. 4).
b).

According to the present invention, as described above, the cam plate has the separation structure, and the separation cam plate 2b is appropriately operated to move the separation cam plate 2b so that the table roll 3 which is disengaged under the running carriage is located at a predetermined rolling line A position. Can return to
Even when the coarse bar is not joined or when the coarse bar is cut, it is designed so that it does not hinder the transfer of the coarse bar, regardless of where the coarse bar running carriage stands by. Coarse bars can be threaded.

[0025]

According to the present invention, in a rolling facility having a traveling bar for traveling, a roll for holding the traveling bar for traveling of a rough bar is used both during transfer when the coarse bar is not joined and during cutting of the coarse bar. Since the distance between the table roll and the table roll can be maintained at a predetermined interval, no matter how much the rolling trolley is installed on the rolling equipment, the problem of transport failure due to the drooping of the rough bar tip can occur. Since the rough bar can be surely conveyed without causing any occurrence, normal rolling can be performed regardless of the presence or absence of the rolling trolley during the rolling operation, which is an industrially useful invention.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a moving mechanism of a separation cam plate for carrying out the present invention, showing a state before moving.

FIG. 2 is a view showing a state after the separation cam plate is moved in FIG.

3A and 3B are views showing another embodiment of the present invention, in which FIG. 3A shows a state before moving the separation plate, and FIG. 3B shows a state after moving the separation plate.

FIG. 4 shows another embodiment of the present invention (a).
Shows a state before moving the separation plate, and (b) shows a state after moving the separation plate.

FIG. 5 is a diagram showing a descending state of a table roll by a cam plate of a running carriage.

FIG. 6 is a diagram showing a joining standby state position of a rough bar by a traveling processing cart.

[Explanation of symbols]

 1 Running Machining Cart 2 Cam Plate 2a Cam Plate Main Body 2b Separation Cam Plate 3 Table Roll 4 Cam Roll 5 Rotation Shaft 6 Lever 7 Lever 8 Running Machining Cart Main Body Member 10 Holding Roll 11 Guide Pillar 12 Lifting Roll 13 Bracket 14 Lifting Cylinder 15 Lifting member 20 Drive cylinder 21 Link mechanism 22 Separation cam plate upper part 23 Support shaft 30 Drive cylinder 31 Drive cylinder end 32 Guide groove 33 Projection body A Rolling line S Rough bar

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichi Shimizu 9-27 Kawabuchicho, Yawatahigashi-ku, Kitakyushu City, Fukuoka Prefecture Taihei Kogyo Co., Ltd. Yawata Branch (72) Inventor Toshiyuki Nishihara 1st Nishinozu, Oita-shi, Oita Prefecture Shin Nippon Steel Co., Ltd. Oita Works (72) Inventor Kazuhiro Nishiyama 20-1 Shintomi, Futtsu City, Chiba Shin Nippon Steel Co., Ltd.

Claims (10)

[Claims] 1. When transferring a rough bar in a rolling facility having a rough bar running working carriage arranged on a continuous hot rolling line for steel plates, a cam plate installed below the running working carriage Among the pushed down table rolls, only the table rolls that are located under the traveling work carriage are returned to the normal position of the rough bar conveying line. Roll return method. 2. A table roll, which is a table roll pushed down by a cam plate installed in the lower part of the running processing bogie and located outside the running working bogie on the side of the coarse bar of the running running bogie. To return to the normal position of the rough bar transfer line. 3. A table roll pushed down by a cam plate installed at the lower part of the travel processing bogie at a position outside the travel processing bogie on the coarse bar exit side and the entrance side of the travel running bogie. A method of returning a roll of a steel material conveying table equipped with a traveling truck, which is characterized by returning a certain table roll to the normal position of the rough bar conveying line. 4. A rough bar running machining carriage having a cam plate, wherein a lower cam plate located at a position outside the running machining carriage below the running bar of the traveling machining carriage can be separated from the cam plate body. A roll-returning device for a steel material transport table equipped with a running carriage that is characterized by its construction. 5. A rough bar running machining trolley having a cam plate, wherein a lower cam plate located at a position apart from a running bar of the rough working bar to a rough bar exit side and an entering side of the rough running bar from the cam plate body. A roll returning device for a steel material transport table equipped with a carriage for running processing, characterized by being separable. 6. As a moving mechanism of the separating cam plate, an elevating cylinder is provided via a supporting member at a part of the main body of the rough bar running machining carriage located above the separating cam plate, and a lower end portion of the cylinder is provided. 6. A steel material conveying table provided with a traveling working carriage according to claim 4 or claim 5, wherein the separation cam plate is fixed to the upper part of the separation cam plate via an elevating member and the separation cam plate is pulled upward. Roll return device. 7. An elevating member is composed of a vertical guide column attached to a part of the main body of the rough bar running machine, and an elevating roll installed by sandwiching the guide column from both sides. The roll returning device for a steel material conveying table provided with the traveling working carriage according to claim 6, which is configured to be pulled up. 8. As a moving mechanism of the separation cam plate, a drive cylinder is provided on the side of the cam plate body close to the separation cam plate, and an end portion of the cylinder is connected to the upper portion of the separation cam plate through a link mechanism. 6. A roll returning device for a steel material conveying table having a traveling working carriage according to claim 4 or 5, wherein said separating cam plate is movable obliquely upward. 9. As a moving mechanism of the separation cam plate, a driving cylinder is provided on the cam plate body side in a position close to the separation cam plate, and an end portion of the cylinder is provided on a part of a side portion of the separation cam plate. 5. The mounting / separating cam plate is movable in the horizontal direction.
Alternatively, a roll-returning device for a steel material conveying table, which is provided with the travel-processing dolly according to item 5. 10. A guide mechanism for the separated cam plate, wherein a horizontal guide groove is provided in a part of the cam plate body side.
10. The travel processing carriage according to claim 9, wherein a protrusion fitting into the guide groove is attached to a part of the separation cam plate to ensure the horizontal movement of the separation cam plate. Roll recovery device for steel material transport table.