JPS594635B2 - Yukairo Yo Food - Google Patents

Description

Detailed Description of the Invention 5 The present invention is disclosed in U.S. Pat.
Publication No. 7) relates to an improvement of a furnace hood having the characteristics as described in the specification.

The main object of the invention is to provide a lateral opening arranged in the roof of the hood and allowing a loading bucket to enter the interior of the hood and be positioned in alignment with the upwardly opening mouth of the furnace. an elastic bumper or recoil system opposed to a resilient bumper or recoil system designed to absorb the lateral momentum of the packet, return the packet, and align the packet precisely with the furnace throat after it has passed the furnace throat. Providing a bumper or recoil system. Another object of the present invention is to provide a packet-engaging device comprising on its outer surface pad means for engaging a bumper pin comprising spring means resisting outward movement of the bumper pin. The object of the present invention is to provide novel means for the above-mentioned purpose, including a sliding roof section supporting a suspension skirt suitable for carrying out. Other objects of the invention will become apparent from the following description.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Explaining with reference to the drawings, especially FIG. 4, FIG. 4 shows the following:
A portion of a conventional melting furnace 10 is shown having a top 11 and an upwardly open mouth 12 30 .

Typically, the spout 12 is provided with a laterally swingable lid (not shown) such as that shown at 16 in FIGS. 1 and 2 of the above-mentioned U.S. Pat. No. 3,756,582.
95 The interior of the hood, indicated generally at 13 in FIG. 1, is suitably connected by a conduit 14 to a vacuum source (not shown).

Said hood is formed to constitute a roof 15 and a hanging peripheral side wall 16 which rests on the top 11 of the furnace, and the bottom of the hood when the hood is in place. It is opened to surround the mouth of the furnace.

The roof section 17 of the 7th roof with the corresponding side wall section rotates around the pivot axis 18 in the first direction.
It is hinged to the main body of the hood 13 at 18 so that it can swing between the position shown by the solid line and the position shown by the broken line in the figure.
Similarly, the adjacent sip section 19 of the roof with its corresponding side wall section is bolted to the body of the hood at 20 so as to be able to swing between the solid line position and the dashed line position.
It will be apparent that when the parts 17 and 19 are swung into the dashed position, the lateral entrance 21 to the interior of the seventh door is opened. 1. Straight flange means 22, supported on the roof of the hood, cooperate with the roof of the hood to form a guide slot 23 (FIG. 3). Similar 7-lunges 24 forming corresponding guide slots (FIG. 1)
is fixed to the roof of the hood at two points facing the slot 23, and the roof portion 25 is received within said slot so as to be reciprocatable along a straight line substantially opposite the inlet 21. It has both side edges that are guided by.

A suspension skirt 26 (FIG. 3) is fixed to the roof section 25 so as to move therewith, and a bumper pad 26
7, 28 are suitably fixed to the skirt 26, and five flat surfaces 29 and 30 are located towards the rear of the hood, preferably arranged in the same vertical plane.
Illustrated in FIG. 2 is a subframe, generally designated 31, located within the hood and behind the skirt 26.

This sub-system 31 includes upright members 32, 33, horizontal beams 34, 35, connecting members 36, 37, and columns 38, 3.
9 is preferred. Pillars 38 and 39 are the first
Preferably, it is an l-beam with a wide 7-lunge as shown most clearly in the figure. A housing 40 is fixed near the top of the pillar 38, and this housing 40 forms a substantially horizontal sliding guideway for a bumper pin 41, one end of which is a bumper head 42. There is.

A compression coil spring 43 is disposed between the bumper head 42 and the tip of the housing 40, and a compression coil spring 43 is arranged inside the pin 41.
That is, it always resists movement to the right. It should be obvious that bumper head 42 is aligned with pad surface 29. Similarly, a similar housing 44 is secured near the top of post 39 to form a substantially horizontal guideway for a similar pin 45 having a bumper head 46 that resists surface 30.

A coil spring 47 is disposed between the bumper head 46 and the distal end of the housing 44 to resist rearward or rightward movement of the skirt 26, as shown in FIG. The roof of the hood is formed with an opening sized, shaped and positioned to accommodate a conventional loading bucket 48 which can be suitably supported and moved, e.g. 49, by means such as a crane (not shown). ing.

Such an opening is partially formed by the portions 17 and 19.
A part is formed by section 25. The furnace mouth 12 is
Usually, it is closed by a movable lid (not shown) that is moved by a swingable column 50 between a position where the furnace mouth is closed and a position where it is opened. On the other hand, the cover 51 for the opening in the roof of the hood is installed so as to be movable around the axis of the column so as to open and close the opening in the roof. This cover 51 is formed with an opening 52 for receiving a pin 53 which is supported on the lever lid prior to the rocking movement of the furnace lid, so that the cover can be rocked together with the lid. ing. These points are described in detail in the above-mentioned US Pat. No. 3,756,582. An arcuate slot 54 is formed in the roof of the seventh card to accommodate movement of the pin 53.

During melting and heat treatment of the charge, the furnace lid closes the mouth 12, the roof cover 51 closes the opening through the roof of the 7th bar, and the pins 41 and 45 are in the fully extended position. , the roof portion 25 and skirt 26 are substantially in their forwardmost positions.

When introducing the charge into the furnace, the column 50 is operated and the furnace lid is lifted, so that the pin 53 is pushed into the opening 52 of the cover 51. When the column 50 is rotated counterclockwise in FIG. 1, the cover 51 is swung to the position indicated by the broken line in FIG. 1 along with the furnace lid. Thus, in alignment with the furnace mouth 12, a portion is provided by portions 17 and 19 and a portion is provided by portion 25.
The aperture formed by is opened. When parts 17 and 19 are swung into the dashed position, a passage is provided through which bucket bag 48 can be moved laterally into the interior of the hood in the direction of arrow 55 towards flange 26.

Typically, the bucket cart 48 is suspended from a crane by a chain, but when the crane arm or carriage is decelerated, the bucket cart 48 tends to move forward of the suspension cable or chain due to inertia.

Therefore, the bucket tends to continue moving even when the crane stops. When the bucket aligns with the furnace mouth 12,
The bucket tends to hit the flange 26 and displace it.

Pad surfaces 29 and 30 contact bumper heads 42 and 46 and pins 41 and 45 are driven rearward against respective springs 43 and 47. The spring absorbs the momentum of the bucket as it moves in the direction of arrow 56 in FIGS. 3 and 4, and thereafter moves the bucket in the direction of arrow 5.
7 to ensure exact alignment with the furnace mouth 12. Of course, the roof section 25 takes part in the above-mentioned movement of the skirt 26. It will be readily appreciated that if the skirt 26 continues well above the roof of the hood, the crane operator could also swing the bucket 48 horizontally in a plane above the roof. .

The bucket hits the upward extension of the skirt, and the pins 41 and 45 and springs 43 and 47 perform the same quick stopping function as described above, so that the bucket can pass through the roof opening and into the position of FIG. could be lowered vertically. The embodiments of the present invention will be described as follows.

(1) In accordance with claim 7, the other portion of the roof is supported by a suspension skirt configured to engage a side wall of a bucket and the skirt; circumferentially spaced pad means having a flat surface in a direction away from the axis, and the spring means spaced apart on an inner surface of the side wall opposite the inlet. a pair of pillars supported in parallel; a first bumper pin supported on one of the pillars and aligned with one of the pads; a first bumper pin supported on the other of the pillars and aligned with one of the pads; a second bumper pin aligned with the other; and a spring for each pin resiliently resisting movement of the pin away from the axis.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of a hood constructed in accordance with the present invention.

Claims (1)

[Claims] 1. A hood for use in a melting furnace having an upwardly opening mouth and configured to be installed at the top of the melting furnace in surrounding relation to the mouth, the upright side walls and the top of the hood being closed. a roof and hinged to the main body of the hood and capable of swinging outwardly from the main body to open a lateral entrance into alignment with the mouth in the hood. In a hood having a portion, the inlet being configured to allow loading buckets to enter the alignment position, the one portion being connected to a portion of the roof. a corresponding portion of the side wall, and another portion of the roof opposite the inlet is slidably mounted toward and away from the axis of the mouth; A hood characterized in that spring means are provided for elastically resisting movement of the other part of the roof away from the axis of the mouth.