JPH0327683Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heating device for cutting slabs in continuous casting.

(Prior Art) In recent years, direct rolling of slabs has been actively promoted in continuous casting to save energy and eliminate process steps.

In order to realize this direct rolling of the slab, it is necessary to directly convey the slab to the rolling process in a high temperature state without lowering the temperature of the slab during the casting process.

For this purpose, as in Utility Model Application Publication No. 57-122758,
Using devices to keep the cast slabs warm using removable insulating hoods, swingable lenses, etc., they have achieved considerable results.

Further, in the same continuous casting process, it is difficult to provide a fixed hood in a place where a moving piece such as a slab cutter or a complex equipment such as a fusing mechanism is attached. Therefore, as shown in Japanese Utility Model Application No. 58-175851, movable hoods of a size that can cover the outer surface of the existing fixed insulation hood are continuously installed on the front and rear surfaces of the slab cutting machine to cut the slabs. It retains heat.

(Problem that the invention aims to solve) However, these heat retention devices do not keep the area near the slab cutting machine warm, or they are a moving hood that has a space much larger than the size of the slab. Otherwise, the large space will cause heat convection cooling.

Moreover, as the device becomes larger, a space for installing the device is formed, resulting in a significant reduction in the cooling effect.

In addition, in order to avoid interference with the fixed hood, it is necessary to have a mechanism for lifting and lowering using an electric motor, cylinder, etc., and a detector must be installed to tell the electric motor, cylinder, etc. the point at which to lift and lower. Ta.

If such a detector malfunctions, it will not be able to determine the up and down movement points and will interfere with the fixed heat retaining device, leading to a high risk of damage to the fixed heat retaining device or the heat retaining cover. The same applies if the electric motor, cylinder, etc. for lifting and lowering the detector malfunctions even if the detector operates normally.

The present invention eliminates these drawbacks and provides a slab edge warming device that does not have dedicated driving power to prevent slab temperature drop.

(Means for Solving the Problems) A heat retention device for continuously cast slabs according to the present invention will be described below.

FIG. 1 is an explanatory side view of the slab edge heat insulating device sandwiching the cutting machine before movement, and FIG. 2 is an explanatory side view of it after movement. FIG. 3 is a side view of the rear moving heat retaining cover, and FIG. 4 is a front view. FIG. 5 is a side view showing the operation of the rear moving heat-insulating cover, FIG. 6 is a plan view of the same, and FIG. 7 is an explanatory diagram of the lowered state of the elevating side wall.
FIG. 8 is an explanatory diagram of the raised state, FIG. 9 is an explanatory diagram of the operation of the elevating side wall, and FIG. 10 is a front view of the same.

The present invention includes a front traveling trolley 2, a front movable heat insulating cover 3, a front elevating side wall 4, a front inclined rail 5, and a rear traveling trolley 6 and a rear movable heat insulating cover 7 on the front side of the cutting machine 1. It is composed of a rear elevating side wall 8 and a rear inclined rail 9.

In FIG. 1 and FIG. 2, the front traveling truck 2 and the rear traveling truck 6 have dedicated drive devices 15a and 15b, respectively.
The cutting machine 1 runs along the slab 10 while cutting the slab.
As shown in FIG.
The rotation of b is transmitted to the drive shaft and the wheel 41-
1, 41-2, 41-3, and 41-4 can freely run on the guide rail 40.

The front moving heat retaining cover 3 and the rear moving heat retaining cover 7 are
Each of them is vertically installed by a hanging beam on the front traveling truck 2 and the rear traveling truck 6, and prevents heat dissipation of the slab 10.

As shown in FIGS. 9 and 10, the elevating side wall section is constructed of front and rear elevating side walls 4, 8, arm 12, guide roll 13, and link plates 14a, 14b, and runs on the bogie horizontal frame 16 of the traveling bogies 2, 6. It is provided so that the front and rear elevating side walls 4 and 8 can be raised freely and as the guide roll 13 travels and rises.

In addition, the vertical side walls 4 and 8 are adjacent vertical side walls 4a and 4b.
The lower ends of the pair of hanging arms 12 are tiltably locked by a link plate 14b, and a flexible lid 17 placed between the ascending and descending side walls 4a and 4b is located near the center of the link plate 14b. is similarly secured with a crimp.

In addition, in order to support the elevating and lowering side walls of the traveling bogies 2 and 6 on the bogie lateral frame 16, a guide roll 13 is rotatably installed inside the upper end of the pair of hanging arms 12, and the bogie lateral frame Reference numeral 16 denotes a rail having a recess 18 in the center, and is placed on both ends of the rail.

Inclined rails 5, 9 are provided on the traveling carriages 2, 6 at predetermined traveling stroke portions thereof, and in the running direction of the traveling carriages 2, 6, respectively.

The inclined rails 5, 9 are separately supported at their ends on the directional side of the traveling carriages 2, 6 in a concave portion 18 of the carriage horizontal frame 16, overlapping at least on the same plane. Therefore, when the front and rear traveling carts 2 and 6 reach a predetermined stroke (corresponding to the part where the interference object 11 is located), the guide roll 13 can transfer from the cart horizontal frame 16 to either of the inclined rails 5 or 9. .

That is, as shown in FIG.
It is vertically installed on the horizontal frame 16 of the trolley by a hanging beam, and is fixed to prevent interference objects 11 such as fixed hoods and burners during transportation.
Sufficient spacing is provided to avoid this. On the other hand, the elevating side walls 4 and 8 are attached to the heat insulating covers inside the heat insulating covers 3a and 7a, and are fitted into the notches 41 of the heat insulating covers as shown in FIG. The link is latched.

Therefore, the elevating side walls 4 and 8 are covered with heat insulating cover 3 when ascending.
It is on the same level as a and 7a, and comes into close contact with the roller table when descending to provide a sealing effect (see Figs. 7 and 8).

In the figure, 19 is a stopper for the elevating side walls 4 and 8, and 20 is a roller table for supporting and conveying the slab.

In addition, as shown in FIG. 11, the running cutting machine has two wheels 32, the right and left wheels of which are connected by a shaft, driven by a motor 31 attached to a cutting machine truck 30.
It moves on rails 40 by chain transmission. The moving speed is controlled in synchronization with the conveying speed of the thermal slab.

The torch 34 of the fusing machine 35 is moved horizontally by a vertical motor 36, driven by a rack and pinion 37, and guided by two upper and lower guide rollers 38, which sandwich a guide 39 between them. .

(Function) The slab heat retention device of the present invention first starts cutting the slab 10 on the upstream side in the flow direction of the slab.

For example, the front traveling carriage 2 is located on the inclined rail 5, and the rear traveling carriage 6 is at a predetermined position as shown in FIG.

In this state, the cutting machine 1 follows the flow speed of the slab 10 and sequentially retreats to cut it.

As the cutting machine 1 moves backward, the rear carriage 6 sequentially moves to the rear, and the guide roll 13 moves to the inclined rail 9.
I'm going to follow you.

On the other hand, the front traveling bogie 2 sequentially moves toward the rear side from the inclined rail 5, and in the same way, the guide roll 13 moves from the inclined rail 5 to support the bogie lateral frame 16.

As a result, the rear traveling bogie 6 moves up and down in sequence to avoid interference 11 such as the existing heat insulating hood, and the front running bogie 2 has its uphill side walls 4 and 8 lowered in order to avoid the obstacles 11, such as the insulating hood. keep the area completely warm.

In this way, when the traveling carriages 2, 6 travel and reach the inclined rails 5, 9, the guide roll 13 transfers to the inclined rails 5, 9 and ascends along the inclined rails. As the guide roll 13 rises, the arm 12 also rises, and the elevating side walls 4 and 8 suspended from the arm 12 also rise.

In this embodiment, the lifting stroke and the heat insulation cover 3,
In terms of the length of 7, the elevating side walls 4 and 8 are divided into three or four parts and connected by a link plate 14. Therefore, the elevating side walls 4 and 8 gradually rise,
The guide rolls 13 are guided by the inclined rails 5 and 9 and are all transferred to a state where the side walls are raised.

(Effects of the invention) According to the invention, heat dissipation from the slab is reduced, and a drop in temperature of the slab can be prevented. In addition, by combining the side wall lifting device with the trolley running device, troubles caused by accidents with the lifting drive system can be eliminated.
The entire device can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a front side view of the present invention, Fig. 2 is a side view after movement, Fig. 3 is a side view showing the configuration of the rear movement heat insulating cover, Fig. 4 is a front view of the same, and Fig. 5 is rear movement. A side view showing the operation of the heat insulation cover, FIG. 6 is a plan view of the same, and FIG. 7 is a front view of the elevating side wall in a lowered state.
Fig. 8 is a front view of the same in the raised state, Fig. 9 is a front view for explaining the operation of the elevating side wall, Fig. 10 is a side view of the same,
FIG. 11 is an explanatory diagram of the cutting machine. 1: Cutting machine, 2: Front traveling trolley, 3: Front movable heat insulation cover, 4: Front elevating side wall, 5: Front inclined rail,
6: Rear traveling trolley, 7: Rear movable heat insulation cover, 8: Rear elevating side wall, 9: Rear inclined rail, 10: Flub, 1
1: Interfering object, 12: Arm, 13: Guide roll,
14: Link plate.

Claims (1)

[Scope of utility model registration request] Along the roller table for conveying slabs, rails with a horizontal part and an inclined part are provided facing each other, and a slab cutting area is interposed on the slope side of the rail, and a slab cutting machine and the front and rear surfaces of the cutting machine are installed. or a slab heat retention device is provided movably on either of them, the slab heat retention device has a drive system, wheels, and a horizontal truck frame, a slab heat retention cover is vertically disposed on the truck horizontal frame, and An elevating side wall is provided on the inside of the slab heat insulating cover, and the elevating side wall is linked and locked to the bogie lateral frame via an arm and a guide roll to be supported so as to be able to rise and fall freely, and the inclined tip of the rail is attached to the bogie lateral frame. 1. A heat retention device for continuously cast slabs, characterized in that the guide rolls are superimposed at least on the same plane as the upper surface, and the guide rolls can be freely transferred to the horizontal frame of the trolley and the inclined part of the rail by running the trolley.