JP3310418B2 - Tilting hot water induction furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a safety measure so that workers and the like do not fall into the space between a tilting deck and a fixed deck which open greatly when a tilting-type crucible-type induction furnace is tilted. The present invention relates to a tilting tapping type induction furnace.

[0002]

2. Description of the Related Art Conventionally, as a tilting tapping type induction furnace in which an induction furnace is tilted around a tilting axis to discharge hot water, a conventional method has been disclosed in JP-A-4-6488.
No. 8, JP-A-63-19964, JP-B-63
No. 4,428,38 is known. In these documents, the tilting deck for fixing the upper part of the induction furnace and the fixed deck disposed around the tilting deck are not described in detail or described at all.

Conventionally, a tilting tapping type induction furnace generally includes an induction furnace having an induction coil and a yoke on the outer periphery of a crucible, and tilting around a tilting axis fixed near an upper portion of the induction furnace and near one side. And a fixed deck that is arranged with a gap between the tilting deck when it is horizontal.

[0004]

According to the above prior art, the continuous tilting deck and the fixed deck are used as effective working floors for the operation, and when the metal material is charged,
When melting the metal and keeping the molten metal warm, an operator or the like approaches the tilting deck near the crucible as necessary.
However, when the induction furnace is tilted together with the tilting deck in order to discharge the molten metal, a large space is opened between the tilting deck and the fixed deck, and there is a danger that workers and operating equipment will fall.

[0005] It is an object of the present invention to provide a tilting tapping type induction furnace which can safely prevent a worker or the like from falling into a space between a tilting deck and a fixed deck which are greatly opened when the induction furnace is tilted. Is to do.

[0006]

Means for Solving the Problems A tilting tapping type induction furnace according to invention 1 comprises an induction furnace having an induction coil and a yoke around a crucible, a water-cooled feeder for supplying electric power to the induction furnace, and an upper part of the induction furnace. A tilting deck fixed around the tilting axis and tilting about a tilting axis near one side, and a tilting tapping type induction furnace including a fixed deck arranged through a gap in the tilting deck when horizontal, A rear guard is provided at a rear edge of the tilting deck facing the rear deck so as to be able to protrude and retract from the surface of the fixed deck, and a notch is provided in the rear guide to prevent interference of a water-cooled feeder. At this time,
In a second aspect, the rear guard is moved in and out by a driving machine.

According to a third aspect of the present invention, there is provided a side guard which is disposed on a side edge of the tilting deck so as to sandwich the one side and is capable of protruding and retracting from the surface of the fixed deck. At this time, Invention 4
The upper part of the side guard is fixed to the tilting deck.

[0008]

According to the first aspect of the present invention, in conjunction with the tilting of the tilting deck together with the induction furnace, if the rear guard is raised upward from the surface of the fixed deck, the tilting deck and the fixed deck open greatly when tilted. Of the space, the space at the rear edge of the tilting deck facing one side near the tilting axis of the tilting deck is closed by the rear guard. At this time, according to the second aspect, the tilting of the induction furnace and the retreat of the rear guard can be made independent.

According to the third aspect of the present invention, the tilting deck and the fixed deck, which are greatly opened when the tilting deck is tilted when the side guard is extended upward from the surface of the fixed deck in conjunction with the tilting of the tilting deck together with the induction furnace. Of the space, the space at the side edge of the tilting deck sandwiching one side near the tilting axis of the tilting deck is closed by the side guard. At this time, according to the fourth aspect, the upper part of the side guard is fixed to the tilting deck, the interlocking is automatic, and the structure is simple.

[0010]

FIG. 1 is a perspective view of the embodiment when tilted, and FIG.
FIG. 2 is a perspective view of FIG. 1 when not tilted. In the drawings, components denoted by the same reference numerals have approximately the same functions, and redundant description may be omitted. In the figure, this tilting tapping type induction furnace has an induction furnace 1 provided with an induction coil and a yoke (these are not shown) on the outer periphery of a crucible, and is fixed around the upper part of the induction furnace 1 near one side 3a. The tilting deck 3 is tilted around the tilting shaft 2, and a fixed deck 4 is disposed on the tilting deck 3 when it is horizontal and is disposed with a gap 4 s therebetween.

The above structure is almost the same as that of the prior art. As a characteristic structure of the embodiment, a side guard 1 is provided.
1 is disposed on the side edge 3c of the tilting deck 3 sandwiching the one side 3a, and can be protruded and retracted from the surface of the fixed deck 4. The upper side of the side guard 11 may be fixed to the tilting deck 3 so as to move in and out while tilting R. The tilting deck 3 in which the rear guard 12 faces the one side 3a.
At the trailing edge 3 b of the fixed deck 4. The rear guard 12 has a cylinder 13 under the floor.
And the like, and is associated with the tilt R by a limit switch or the like. The induction furnace 1 is not tilted,
When the water-cooled feeder 5 that supplies power to the induction furnace 1 interferes with the rear guard 12 when the rear guard 12 is lowered, a notch 12 a may be provided in the rear guard 12. The side guard 11 may also appear and disappear with a cylinder or the like. The side guard 11 and the rear guard 12 may be fences or walls.

According to such a structure, if the tilting deck 3 is moved together with the induction furnace 1 in the manner of tilting R from the state of FIG. 2 to the state of FIG. 1, the side guard 11 integrated with the tilting deck 3 tilts. While going round, it comes out from the surface of the fixed deck 4 upward. In addition, the tilting deck 3 together with the induction furnace 1
When the cylinder 13 is driven in conjunction with the movement of the cylinder 13 as a tilt R, the rear guard 12 comes out from the surface of the fixed deck 4 upward. For this reason, the space between the tilting deck 3 and the fixed deck 4, which opens greatly when the induction furnace 1 is tilted, is closed by the side guard 11 and the rear guard 12,
There is no risk of workers falling. By the way, induction furnace 1
Crucible linings are severely depleted due to the high thermal load and may require periodic or urgent rebuilding of the furnace. At this time, the induction furnace 1 is first tilted together with the tilting deck 3, and the furnace material at the bottom of the induction furnace 1 is destroyed by the piston P of the cylinder.
Therefore, if the tilting deck 3 is tilted R and the rear guard 12 is lowered, the operation of the piston P is not hindered.

[0013]

According to the first aspect of the present invention, the rear guard is made to protrude and retract from the surface of the fixed deck in conjunction with the tilting of the induction furnace. The space at the rear edge of the deck is closed by a rear guard. For this reason, there is an effect that there is no danger that an operator or the like falls and the safety is ensured. Further, by providing the notch in the rear guide, there is an effect that the water cooling feeder can be prevented from interfering with the rear guard. At this time, according to the second aspect of the invention, there is an effect that the induction furnace is tilted, the rear guard is lowered, and the bottom of the induction furnace can be maintained and inspected for the reconstruction of the induction furnace. Also,
According to the third aspect, since the side guard is made to protrude and retract from the surface of the fixed deck in conjunction with the tilting of the induction furnace, of the space between the tilting deck and the fixed deck that opens greatly when tilted, Because the space is also closed by the side guard,
There is an effect that there is no danger such as a fall of an operator, and the safety is provided. At this time, according to the fourth aspect, the upper part of the side guard is fixed to the tilting deck, and the interlocking is automatically performed.
There is an effect that the structure is simplified and the safety is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention when tilted.

FIG. 2 is a perspective view of the embodiment of FIG. 1 when not tilted.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Induction furnace 2 Tilt axis 3 Tilt deck 3a One side 3b Trailing edge 3c Side edge 4 Fixed deck 5 Water-cooled feeder 11 Side guard 12 Rear guard 13 Cylinder H Projection P Piston R Tilt

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masahiro Nakatani 1-1, Tanabe-shinden, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (56) References JP-A-4-64888 (JP, A) Sho-59-45494 (JP, U) JP-B-63-42838 (JP, B2) JP-B-60-41511 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F27B 14 / 00-14/20

Claims (4)

(57) [Claims] An induction furnace having an induction coil and a yoke on the outer periphery of a crucible , a water-cooled feeder for supplying power to the induction furnace,
In a tilting tapping type induction furnace comprising: a tilting deck fixed around the upper portion of the induction furnace and tilting around a tilting axis near one side; and a fixed deck arranged horizontally with a gap in the tilting deck. A rear guard disposed at a rear edge of the tilting deck facing the one side and capable of protruding and retracting from the surface of the fixed deck, and a water cooling fan attached to the rear guide.
A tilting tapping-type induction furnace characterized by providing a notch for preventing interference of a leader. 2. The tilting tapping induction furnace according to claim 1, wherein the rear guard is moved in and out by a driving machine. 3. The tilting tapping type induction furnace according to claim 1 , further comprising a side guard disposed on a side edge of the tilting deck sandwiching the one side and capable of protruding and retracting from a surface of the fixed deck. Tilting tapping type induction furnace. 4. The tilting tapping induction furnace according to claim 3, wherein an upper portion of the side guard is fixed to the tilting deck.