JPS6040582Y2 - Material conveyance device for walking beam heating furnace - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a material conveying device in a walking beam heating furnace that heats materials to be heated, such as blooms, billets, slabs, etc., to a predetermined temperature.

Conventionally, in walking beam heating furnaces, the material to be heated is conveyed on a water-cooled skid inside the furnace, so the part of the material to be heated that comes into contact with the skid is locally cooled, resulting in skid marks and damage to the finished product after rolling the material. This caused shape defects and decreased material yield.

Further, while the material to be heated is being transported through the furnace, lateral displacement occurs in the length direction of the material, causing problems such as damage to the furnace inner wall, damage to the refractory material of the furnace skid, damage to the rider, and the inability to transport.

The present invention introduces a sliding beam in place of the conventional fixed beam, and aims to significantly reduce skid marks and correct lateral deviation of materials in the furnace.

Embodiments of the present invention will be described below with reference to the drawings.

In the illustrated example, a hydraulic drive system will be described as an example, but of course the present invention is not limited to hydraulic drive.

As shown in Figures 1 and 2, the heating furnace body has four columns 1,
The furnace wall 2 held by this, the furnace bottom 3, the backstay 4, etc. are constructed in a rectangular box shape, and the sliding beam 5 and walking beam 6, which are placed in place of the conventional fixed beam, are sliding beams, respectively. It is fixed to the sliding beam frame 8 and walking beam frame 11 under the furnace through the beam section hearth opening 16 and the walking beam section hearth opening 17.

In addition, these beam frames 8 and 11 are arranged at different levels, and the sliding beam water seal 7 is arranged in the furnace width direction, and the walking beam water seal 10 is arranged in the furnace length direction, so that they do not interfere with each other. .

Furthermore, the sliding beam frame 8 is supported by a plurality of bearing wheels 9 having axes in the furnace length direction, and as shown in FIG. A slide cylinder 15 is arranged on the foundation, and by driving the cylinder 15, the beam frame 8 is moved in the furnace width direction, and the sliding beam 6 is slid in the same direction.

On the other hand, the walking beam frame 11 is supported by a lever with a beam lift roller 12, and is moved up and down and back and forth by a walking beam lift cylinder 13 and a walking beam shift cylinder 14, thereby imparting a desired rectangular motion to the walking beam 6.

In addition, in FIG. 2, the material to be heated 18 is placed on the sliding beam 5.
FIG. 3 shows a state in which the material to be heated 18 is placed on the walking beam 6 and transported in the length direction of the furnace.

Next, the material conveying method according to the present invention will be explained in detail.

Figure 4 is an operation diagram showing the movement of each beam.The horizontal direction of the page corresponds to the furnace width direction, and the direction perpendicular to the page corresponds to the furnace length direction.The shaded area in the figure is the skid and the heated object. Material 18
shows the contact area (position where skid marks occur).

First, the material to be heated 18 charged into the furnace is placed on the sliding beam 5 (FIG. 4g).

Next, the walking beam 6 rises and the heated material 18
Raise it above the pass level (Figure 4b).

When the walking beam 6 completes its ascent, it moves forward in the furnace length direction, and at the same time, the sliding beam 5 slides by a predetermined stroke in the furnace width direction (rightward in the figure).

This operation causes the sliding beam 5 and the heated material 1 to
8 and the position of the sliding beam 5 are changed (FIG. 4C).

When the walking beam 6 completes its forward movement, it descends and transfers the heated material 18 onto the sliding beam 5.

At this time, the contact position between the sliding beam 5 and the heated material 18 has changed.

(Figure 4d). Next, when the walking beam 6 completes its descent, it retreats.

At the same time, the sliding beam slides by a predetermined stroke in the furnace width direction (to the left in the figure) with the material placed thereon.

This operation changes the contact position between the rewalking beam 6 and the heated material 18 and the position of the walking beam 6 (
Figure 4e).

In this state, one cycle of the walking beam is completed,
The material to be heated 18 advances from the charging side to the extraction side of the furnace, but it deviates from the charged state in the width direction of the furnace by the stroke of the sliding beam 5 (to the left in the figure).

Furthermore, the walking beam 6 rises and lifts the heated material 18 onto the pass line.

At this time, the contact position between the walking beam 6 and the heated material 18 has changed from the previous position (FIG. 4j).

When the walking beam 6 completes its ascent, it moves forward, and at the same time, the sliding beam 5 further slides by a predetermined stroke in the same direction as the previous time (leftward in the figure).

This operation causes the sliding beam 5 and the heated material 18 to
The contact position of and the position of sliding beam 5 change (
Figure 4g).

When the walking beam 6 completes its forward movement, it descends and places the heated material 18 on the sliding beam 5.

At this time, the contact position between the heated material 18 and the sliding beam 5 has changed from the previous time (Fig. 4h).

Next, the walking beam 6 descends and begins to retreat, and at the same time, the sliding beam 6 slides by a predetermined stroke in the opposite direction (to the right in the figure) from the previous time, bringing the walking beam 6 into contact with the heated material 18. After changing the position, both the walking beam 6 and the sliding beam 5 return to the origin.

At this time, the material to be heated 18 has completed its second conveyance into the furnace (FIG. 4g).

By carrying out the method of transporting the material using the sliding beam 5 and the walking beam 6, it is possible to prevent the occurrence of skid marks and the lateral shift of the material, which has great effects on productivity, quality, and heating furnace operation.

Further, according to the conveying device of the present invention, the above method can be carried out effectively, and it is only necessary to install a sliding beam movable in the oven width direction at the same position in place of the conventional fixed beam. There is also less burden on equipment.

[Brief explanation of the drawing]

Fig. 1 is a side view of a specific example of the present invention, Fig. 2 is a front view of the same, Fig. 3 is a front view of the heated material placed on the walking beam, and Fig. 4 is an operational diagram of the present invention. It is. 1...4 pillars, 2...furnace wall, 3...
... hearth bottom, 4... backstay, 5...
・Sliding beam, 6...Walking beam, 7...Water seal for sliding beam, 8...Sliding beam frame, 9...Sliding beam frame bearing wheel , 10...Water seal for walking beam, 11...Walking beam frame, 12...Lever with roller for walking beam lift 13...Walking beam lift cylinder , 14...Walking beam shift cylinder, 15...Sliding beam slide cylinder, 16...Sliding beam section furnace bottom opening, 17...Walking beam section Furnace bottom opening, 18... material to be heated.

Claims (1)

[Scope of utility model registration request] In a material transfer device for a heating furnace having a walking beam that moves rectangularly within the furnace, a sliding beam movable in the width direction of the furnace is arranged in addition to the walking beam inside the furnace, and the sliding beam is installed outside the furnace. A material conveying device for a walking beam heating furnace, characterized in that it is held by a beam frame operated by a drive device.