JPS6045679B2 - Knife edge attachment device for coke oven lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knife edge attachment device for a coke oven lid.

In a coke oven, a knife edge attached to the oven lid via a seal plate is brought into contact with the oven lid frame to maintain airtightness between the oven lid and the oven lid frame.

Since the furnace lid and the furnace lid frame are significantly thermally deformed into a curved shape due to temperature differences inside and outside, the knife edge needs to be able to be adjusted in and out of the furnace lid frame as appropriate. Further, in order to make close contact with the oven lid frame, it is desirable that the knife edge be elastically pressed against the oven lid frame. Therefore, attempts have been made to develop devices that can achieve both adjustment of the knife edge in and out and elastic support, but these devices have had practical problems, such as requiring new machining of the furnace lid. SUMMARY OF THE INVENTION An object of the present invention is to provide a knife edge mounting device that can achieve both adjustment of the knife edge in and out and elastic support without performing any special processing on the furnace lid.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a knife edge provided around the entire circumference of the furnace cover 2, and the knife edge 1 is fixed to one end of a sealing plate 3 bent into a U-shape by a bolt 4 and an auxiliary plate 5.

The other end of the sealing plate 3 is attached to the side surface of the strip plate 6 which is in contact with the side surface of the furnace lid 2. The seal plate 3 may be attached by welding or the like, but in this embodiment, the other end of the seal plate 3 is engaged with a step 7 provided on the side surface of the strip plate 6, and the other end is It is held between the hammering metal fitting 8 and the band plate 6. Note that the band plate 6 and the seal plate 3 are provided around the entire circumference of the furnace lid 2. The hammering metal fitting 8 consists of a pair of rectangular plates 9 and a connecting plate 10 that connects both rectangular plates 9. Both rectangular plates 9 are formed in a tapered shape with a thick wall at one end in the longitudinal direction, and have a hammer/protrusion 11 at the thin end. Further, a long hole 12 extending in the longitudinal direction is provided in the center of the rectangular plate 9, and ribs 13 are provided on the sides of the rectangular plate 9, located on both sides of the long hole 11.
is provided. The rib 13 reaches approximately the center from the thin end of the rectangular plate 9, and a stepped portion 13a that contacts the back edge 6a of the strip plate 6 is provided near the end of the rib 13 on the center side of the rectangular plate. . Furthermore, a protrusion 13b that contacts the side surface of the strip plate 6 is provided at the end of the rib 13 on the center side of the rectangular plate. The hammering metal fitting 8 has the thick side end of the rectangular plate 9 facing the furnace cover frame 14 side and abuts against the other end of the sealing plate 3 and the side surface of the band plate 6, and the stepped portion 13a is placed in contact with the side surface of the band plate 6. It is brought into contact with the back edge 6a. 1
Reference numeral 5 denotes a clamping plate that is brought into contact with the side surface of the rectangular plate 9 of the hammering metal fitting 8, and has a tapered wall thickness such that the thinner side of the rectangular plate 9 is thicker, and has a hole 16 in the center. There is.

These holes 16 of the clamping plate 15 and the elongated holes 1 of the hammering metal fittings 8
2, a bolt 19 is inserted through a mounting hole 17 in the side wall of the furnace cover 2 and a notch 18 in the band plate 6. However,
By tightening a nut 21 screwed onto the tip of the bolt 19 via a spring washer 20, the band plate 6, seal plate 3, hammering metal fitting 8, and clamping plate 15 are integrally fixed to the furnace lid 2. Note that the head 19a of the bolt 19 is
It forms a T-shape with the shaft part 9 and engages with the inner surface of the furnace lid 2. A protruding piece 22 is provided on the connecting plate 10 of the hammering metal fitting 8, and one end of a cylindrical support frame 23 is screwed into a screw hole provided in the protruding piece. The support frame 23 has a shaft-shaped presser member 24 that abuts the back edge 1a of the knife edge 1 and is fitted therein so as to be slidable in the width direction of the knife edge 1. Inside the support frame 23 is an elastic body 25 whose one end engages with the flange 24a of the presser member 24 to urge the presser member 24 toward the knife edge 1 side.
is located. The elastic body 25 is made of a coil spring, and the other end engages with a locking member 26 screwed into the support frame 23. Reference numeral 27 denotes a retaining ring that is fixed within the support frame 23 and prevents the presser member 23 from coming off.

A lock nut 28 is fitted onto the support frame 23.

Next, the operation will be explained. The knife edge 1 is pressed by the elastic body 25 via the presser member 24, so that the knife edge 1 is elastically pressed against the furnace cover frame 14.

Therefore, even if the oven lid 2 and the oven lid frame 14 are slightly deformed, the knife edge 1 and the oven lid frame 14 are always kept in close contact. If a large deformation occurs in the furnace lid 2 or the like, the knife edge 1 is hammered out using a hammering metal fitting 8. That is, when the striking protrusion 11 of the striking metal fitting 8 is struck with a hammer or the like,
Since the back edge 6a of the strip plate 6 is engaged with the stepped portion 13a of the hammering metal fitting 8, the strip plate 6 is knocked out toward the furnace lid frame 14 side.
At the same time, the knife edge 1 is also knocked out. Once the knife edge 1 is hammered out in this manner, since the hammering metal fitting 8 and the clamping plate 15 are in contact with each other on the tapered surfaces, it is difficult for the hammering metal fitting 8 to move toward the tapping protrusion 11 side. Therefore, the knife edge 1 that has been knocked out does not move back. In addition, since the support frame 23 holding the presser member 24 is attached to the hammering metal fitting 8, the knife edge 1
Even if the knife edge 1 and the support frame 23 are knocked out,
The relative position with respect to the knife edge 1 is constant, so that the elastic body 25 presses the knife edge 1 with a constant pressure regardless of the adjustment of the knife edge 1 in and out by tapping. In other words,
When the knife edge 1 is struck out, the knife edge 1 is elastically held by the elastic body 25 at the position where it was struck out with the same pressure as before being struck out. In this manner, by holding the pressing member 24 on the hammering metal fitting 8, it is possible to achieve both adjustment of the knife edge in and out and elastic support. In addition, since the hammering metal fittings 8, knife edge 1, etc. are all attached to the furnace lid 2 with bolts 19, it is possible to both adjust the opening and exit and provide elastic support, but the furnace lid 2 does not require any special processing. , the existing furnace lid 2 can be used as is. As explained above, according to the present invention, the knife edge can be adjusted in and out, and the knife edge can always be elastically pressed against the furnace lid frame with a constant pressure.

Moreover, the apparatus of the present invention can be attached to an existing furnace lid as is without any special processing required on the furnace lid.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, with the first figure being a front view and the second figure being a front view.
The figure is a plan view, Figure 3 is a cross-sectional view taken along line I-1 in Figure 1 showing how it is attached to the furnace lid, and Figure 4 is a cross-sectional view taken along line ■-■ in Figure 1 showing how it is attached to the furnace lid. , FIG. 5 is a partial front view of the strip. DESCRIPTION OF SYMBOLS 1... Knife edge, 2... Furnace cover, 3... Seal plate, 6... Band plate, 8... Beating metal fittings, 9... Rectangular plate, 10... Connecting plate, 12 ... Long hole, 13a... Step part, 14... Hearth frame, 15... Holding plate, 19...
Bolt, 22... Support frame, 24... Pressing member, 25
...Elastic body.

Claims (1)

[Claims] 1. One end of the seal plate is fixed to the knife edge, and the other end of the seal plate is attached to a strip plate that is in contact with the side surface of the oven lid, and the strip plate is connected to the hammering metal fitting bolted to the side surface of the oven lid and the side surface of the oven lid. The above-mentioned hammering metal fitting is provided with a step or protrusion that engages with the back edge of the band plate, and the cylindrical support frame provided on the beating metal fitting is placed in contact with the back edge of the knife edge. A lid for a coke oven, characterized in that a presser member is slidably fitted in the knife edge width direction, and an elastic body is provided on the cylindrical support frame to bias the presser member toward the knife edge side. Knife edge mounting device.