JPH0565532A - Induction heating furnace - Google Patents

Abstract

PURPOSE:To improve the exchanging workability in the case a part in plural units vertically piled in an induction heating furnace has a fault. CONSTITUTION:Plural induction heating units 2 are vertically fitted on each frame 6 supported with a column 5 to constitute the induction heating furnace 1 so as to be vertical piled. The induction heating unit 2 is fixed to a rail member 9 provided on the frame 6 so as to put rolling rings 11 fitted to the lower end part of the induction heating unit 2. At the time of exchanging the induction heating unit 2, a frame 13 for drawing out the heating furnace is fixed to a supporting bracket 15 provided on the column 5 and fitting holes 17 by tightening bolts. By releasing fixture with the frame 6 only in the induction heating unit 2 being an exchanging object and drawing out the unit 2 onto the frame 13 for drawing out the heating furnace through the rail member 9, exchanging work is facilitated by using the wire 20 of a crane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating furnace, and more particularly, to an induction heating furnace that can replace an induction heating furnace when a part of a plurality of parts stacked one above the other fails. .

[0002]

2. Description of the Related Art For example, there is an induction heating type in which an object to be treated is placed in a heating coil and heated by an induction current generated by passing an electric current through the heating coil to perform heat treatment. In an induction heating furnace that performs such induction heating, a plurality of units each having a heating coil as a plurality of parts are stacked vertically in order to convey the object to be processed vertically and continuously perform induction heating. There is something. In such an induction heating furnace, replacement is necessary when a certain intermediate unit fails.

Conventionally, when removing an intermediate unit, the uppermost unit is sequentially removed by a crane or the like in the upward direction, then the unit to be replaced is removed, and a repaired product or a new unit is attached, and thereafter, The removed units above it were reattached and replaced. Therefore, every time the unit is replaced, the units stacked above it must be removed and reattached, which causes a problem that replacement time and cost are enormous.

[0004]

SUMMARY OF THE INVENTION In view of the problems of the prior art as described above, the main object of the present invention is to provide an intermediate portion among a plurality of portions stacked one above the other in an induction heating furnace. It is an object of the present invention to provide an improved induction heating furnace for improving workability when replacing the.

[0005]

According to the present invention, such an object is an induction heating furnace for continuously inductively heating an object to be processed which is conveyed in the vertical direction. Has a plurality of portions which are respectively supported by a horizontal frame and vertically stacked, and which supports the guide means provided for each frame to draw out the parts in the lateral direction and the pulled out part. Therefore, it is achieved by providing an induction heating furnace characterized in that a detachable temporary frame is provided for each frame.

[0006]

By doing so, by appropriately attaching the temporary frame to the frame of the part that needs to be replaced, only the part to be replaced can be laterally moved and removed, and the part above it can be removed. It is possible to place a repaired product or a new one on the temporary frame before moving it to the frame side without removing it.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic side view showing a part of an induction heating furnace to which the present invention is applied. The induction heating furnace 1 may be provided at an appropriate position in a heat treatment process of a strip as an object to be processed, and is formed by stacking a plurality of induction heating units 2 as a plurality of vertically stacked parts. The induction heating units 2 are connected by bellows 3. In each of the induction heating units 2, coils (not shown) are coaxially built in each other, and the strip plate 4 is vertically transported by a transport means (not shown).
However, the coil in each induction heating unit 2 is continuously inserted. Then, an electric current is appropriately applied to each coil to continuously heat treat the strip plate 4.

As shown in FIG. 2, the induction heating unit 2 is provided with a beam spanned between a plurality of columns 5 made of a relatively large H-shaped steel, which are erected on a floor (not shown). , Are supported by each frame 6 arranged horizontally at equal pitch intervals in the vertical direction. The frame 6 is formed in a rectangular shape by using general structural steel, and its four corners are supported by prismatic members. A wire mesh 7 is stretched over the columns 5 and the holes between the beams, except for the opening at the center of the frame 6.

As described above, the upper and lower surfaces of the induction heating unit 2 attached to each frame 6 are formed with an opening through which the strip 4 can be inserted by a flange 8 made of, for example, angle steel. As described above, the axial end portion of the bellows 3 that connects the upper and lower units is detachably attached to the flange portion 8 by, for example, bolting.

The frame 6 is provided with a pair of rail members 9 which are parallel to each other and are formed by adhering an elongated plate material to the upper surface of the frame 6 as guide means. Further, an outward flange portion 10 is formed on the peripheral edge portion of the lower end portion of the induction heating unit 2, and four rolling wheels 11 are symmetrically attached near the four corners of the portion along the longitudinal direction. . The left and right two rolling wheels 11 are guided so as to be rollable on the rail members 9, and the induction heating unit 2 is mounted on the frame 6. Therefore,
The induction heating unit 2 can move horizontally in the lateral direction of the frame 6.

At the lower end of the induction heating unit 2, for example, four fixing flanges 12 are provided symmetrically in the vicinity of each rolling wheel 11. In the installed state of the induction heating unit 2, each fixing flange 12 is bolted to a corresponding portion of the H-shaped steel of the frame 6 to fix the induction heating unit 2 to the frame 6.

By the way, this apparatus is provided with a heating furnace drawing frame 13 as a temporary frame that can form the same surface as each frame 6. This heating furnace drawer frame 13
As shown in FIG. 2, general structural steel and the like are welded together to form a skeleton, and the holes between the steel members are closed by a wire mesh 14 as in the frame 6. . Further, the frame 13 for drawing out the heating furnace is fixed at its left and right ends to the support brackets 15 fixed to the columns 5 on the lateral sides of the frame 6 by, for example, bolting, and the left and right ends of the free end are fixed. One end is fixed to one end and integrally has a hanging member 16 made of, for example, chevron steel and obliquely extended toward the upper side of the support bracket 15 of the pillar 5. The other end of the hanging member 16 is It is adapted to be fixed to a mounting hole 17 provided at a corresponding position of the column 5 by, for example, bolting.

Thus, the frame 13 for drawing out the heating furnace
Is detachably attached to the column 5. Further, on the upper surface of the frame 13 for drawing out the heating furnace, as shown in FIG. 2, an extension rail member 18 is fixedly connected to the rail member 9 on the frame 6 in an attached state. In addition, the pillar 5
The support brackets 15 and the mounting holes 17 provided in the frame 6 are provided so as to correspond to each frame 6.

When replacing the induction heating unit 2 which needs to be replaced due to a failure or the like, the heating furnace drawer frame 13 is attached by bolting as described above as shown in FIGS. 2 and 3. Next, in order to separate the induction heating unit 2 to be replaced from the upper and lower units, the bellows 3 between the upper and lower units are removed from the flange portion 8 and the connecting bolt between the fixing flange 12 and the frame 6 is removed. Also, the induction heating unit 2 is pulled out to the heating furnace pulling frame 13 side as shown by an arrow A in FIG. At this time, since the rolling wheels 12 can roll on the rail member 9 and the extension rail member 18, the induction heating unit 2 can be easily pulled out in the lateral direction.

When the induction heating unit 2 is completely drawn out on the frame 13 for drawing out the heating furnace, the induction heating unit 2
A lower end portion of a wire 20 of a crane (not shown) is connected to a hanging bracket 19 fixed to the upper part of the wall before and after the drawing direction. Then, by pulling the wire 20 with a crane, the induction heating unit 2
Can be hoisted as shown by arrow B in FIG. 1 and can be brought down into position.

Thereafter, the induction heating unit 2 removed
Repaired or a new induction heating unit
It is attached on the frame 6 where it has been removed in the reverse order of the above. Similarly to the above, a repaired article or a new induction heating furnace hung by the wire 20 of the crane is placed on the frame 13 for drawing out the heating furnace, with the rolling wheels 12 aligned with the extension rail members 18. The induction heating furnace is equipped with both rail members
9 is moved to a mounting position on the frame 6, the fixing flange 12 is bolted to the frame 6, and the upper and lower units are connected via the respective bellows 3. Then, the frame 13 for drawing out the heating furnace is removed, and the replacement work is completed.

As described above, by using the detachable frame 13 for pulling out the heating furnace, even if many induction heating units are stacked above the induction heating unit 2 to be replaced, the induction heating unit 2 to be replaced is replaced.
If the connection between the upper and lower ones is released, the replacement work can be easily performed without removing the upper ones. Therefore, the time required for the replacement can be shortened as much as possible, and the cost required for the work can be reduced.

[0018]

As described above, according to the present invention, it is possible to replace only the replacement part without removing the part other than the part of the induction heating furnace that requires replacement, and the removal is sequentially performed from the upper side of the prior art. Since the replacement work time can be shortened and the replacement work cost can be reduced with respect to a product that is replaced later, its effect is extremely large.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a part of an induction heating furnace to which the present invention is applied.

FIG. 2 is a perspective view of a main part of an induction heating furnace to which the present invention has been applied.

FIG. 3 is a diagram corresponding to FIG. 1 showing a procedure for replacing the induction heating furnace.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Induction heating furnace 2 Induction heating unit 3 Bellows 4 Strip plate 5 Struts 6 Frame 7 Wire mesh 8 Flange portion 9 Rail member 10 Outward flange portion 11 Rolling wheel 12 Fixing flange portion 13 Heating furnace drawer frame 14 Wire mesh 15 Support bracket 16 Hanging Member 17 Mounting hole 18 Extension rail member 19 Hanging bracket 20 Wire

Claims (1)

[Claims] 1. An induction heating furnace for continuously inductively heating an object to be processed, which is conveyed in the vertical direction, wherein the induction heating furnaces are supported by a horizontal frame and are vertically stacked. And a guide means provided for each of the frames so as to draw out the parts in the lateral direction, and a detachable temporary frame for supporting each of the drawn parts. An induction heating furnace characterized in that