JP6743789B2 - Shoot pot - Google Patents

Description

The present invention relates to chute pots.

At a steelworks, the molten iron taken out from the blast furnace (deposited) is sent to a steelmaking factory where it is subjected to various refining treatments such as decarburization to produce molten steel with the intended composition components. It When the hot metal taken out of the blast furnace is transported to a steelmaking factory, a hot metal ladle is used as a container for transportation. The hot metal ladle is delivered to the blast furnace in an empty state in order to receive the next hot metal after paying out the transported hot metal at the steelmaking factory. At this time, for the purpose of reducing heat radiation loss from the hot metal ladle to the atmosphere and reducing the hot metal mixing ratio by melting the scrap, a steel factory may throw scrap into an empty hot metal ladle.

When a scrap is put into a hot metal ladle, it is put in a steelmaking plant by using a pot capable of accommodating scrap called a chute pot (also called “scrap pot”). In this loading method, the auxiliary winding hook is hooked on the metal fitting (referred to as "tilting metal fitting") attached to the outside of the chute pan with respect to the chute pan that has been moved to the upper part of the hot metal ladle by the overhead crane ("engage"). Also, the scrap is put into the hot metal ladle by tilting the entire chute pot. For example, Patent Document 1 proposes the shape of a chute pan used in the above-described charging method.

JP, 2014-63220, A

In the above-mentioned charging method, scrap is charged using an overhead crane in the building of a steel manufacturing plant. At this time, the chute pan is tilted by raising the auxiliary winding hook while the auxiliary winding hook of the overhead crane is engaged with the tilting fitting from the outside. In addition, the direction of the auxiliary winding hook of the overhead crane is usually fixed. For this reason, scrap can be loaded only with the chute pot oriented in a certain direction, and depending on the conditions such as the structure of the factory building and the location of the hot metal pot, the chute pot cannot be tilted. There was a case that scrap could not be put into.

Therefore, the present invention has been made by paying attention to the above problems, and provides a chute pot that can improve the implementation rate of throwing scraps and the like into the chute pot by increasing the versatility of the chute pot. The purpose is to

According to one aspect of the present invention, there is provided a three-point hoisting type chute pan which can be lifted and tilted by a crane having a pair of main winding hooks and auxiliary winding hooks, and a main body portion having an opening portion at the top. , A pair of trunnion shafts provided to face the outer peripheral surface of the main body portion, with which the pair of main winding hooks engage, and extending from the outer peripheral surface of the main body portion, and formed at the tip portion A tilting metal fitting with which the auxiliary winding hook engages through an opening, the lifting metal fitting is suspended by a pair of the main winding hooks, and the auxiliary winding is engaged with the tilting metal fitting with the auxiliary winding hook. As the hook moves up and down, the chute pan tilts about the shafts where the pair of trunnion shafts face each other, and the tilting metal fittings are provided on the inner side from the main body side and on both outer sides opposite to the inner side. From the above, there is provided a chute pot characterized in that the opening of the tilting metal fitting is formed so that the auxiliary winding hook can be engaged.

According to one aspect of the present invention, there is provided a chute pan that can improve the implementation rate of throwing scraps and the like into the chute pan by increasing the versatility of the chute pan.

It is a side view which shows the chute pan which concerns on one Embodiment of this invention. It is a top view which shows the chute pan which concerns on one Embodiment of this invention. It is the top view and side view which show a tilting metal fitting. It is the top view and side view which show the auxiliary winding hook of an overhead crane. It is explanatory drawing which shows the tilting operation of the chute pan in the state which engaged the auxiliary winding hook with the tilting metal fitting from the outer side. It is explanatory drawing which shows the tilting operation of a chute pan in the state which made the auxiliary winding hook engage with the tilting metal fitting from the inside. It is a side view showing a state where a chute pot is lifted by a pair of main winding hooks. It is a schematic diagram which shows the throwing-in state of the scrap which used the conventional chute pot by a crane. It is a schematic diagram which shows the throwing-in state of the scrap using the chute pan which concerns on one Embodiment of this invention by a crane. It is a side view which shows the chute pot in a modification.

In the following detailed description, in order to provide a thorough understanding of the invention, embodiments of the invention are illustrated and numerous specific details are described. However, it will be apparent that one or more implementations may be practiced without the details of such specific details. Also, the drawings show well-known structures and devices in a schematic representation for the sake of brevity.

<shoot pan>
A chute pan 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. The chute pan 1 according to the present embodiment is a three-point hoisting pan that can be raised and lowered and tilted by an overhead crane having a pair of main winding hooks and auxiliary winding hooks. As will be described later in detail, the chute pan 1 is configured to be lifted by a pair of main winding hooks and tiltable by a supplementary winding hook. In addition, in the present embodiment, the chute pan 1 accommodates scrap charged by a heavy machine or the like inside, and then collects the scrap by tilting operation and discharges the scrap, so that the empty hot metal pan from which the hot metal is discharged is discharged. Used when inputting scrap.

As shown in FIGS. 1 and 2, the chute pan 1 includes a main body portion 2, a pair of trunnion shafts 3, a tilt metal fitting 4, and a pair of weights 5.
The main body 2 is a pot-shaped container made of iron, and an opening 21 is formed in the upper portion (upper end portion in the side view of FIG. 1). As seen from the plan view of FIG. 2, the main body portion 2 has a substantially rectangular shape when viewed from the upper side and a substantially rectangular shape in which the short side of the upper portion is convexly curved.

The pair of trunnion shafts 3 are shafts provided so as to project on the outer peripheral surface of the main body 2. As shown in FIG. 2, the pair of trunnion shafts 3 are provided at substantially the centers of the long sides of the opening 21 as viewed from the upper side of the main body 2, and are provided to face each other in the vertical direction of FIG. .. The axis to which the pair of trunnion shafts 3 corresponds is called the first axis L1, and the direction in which the pair of trunnion shafts 3 face each other, that is, the direction parallel to the first axis L1, is called the first axis direction. The pair of trunnion shafts 3 are formed in such a size and shape that a pair of main winding hooks provided on the overhead crane can be engaged with each other. In the chute pan 1 according to the present embodiment, with the pair of main winding hooks engaged with the pair of trunnion shafts 3, respectively, the pair of main winding hooks moves up and down, so that the chute pan 1 has an arbitrary height. Be hung up on.

The tilting metal fitting 4 is a substantially plate-shaped member fixed to the main body 2, and when viewed from the upper side of the main body 2, the tilting metal fitting 4 extends in the extending direction with respect to the first axial direction in which the pair of trunnion shafts 3 face each other. Are provided so as to be orthogonal to each other. It should be noted that an axis that is orthogonal to the first axis L1 when viewed from the upper side of the main body section 2 and that passes through the center of the main body section 2 in the first axial direction is called a second axis L2, and a second axis L2. The direction parallel to is called the second axial direction. That is, the tilt metal fitting 4 is provided so as to extend in the second axial direction when viewed from the upper side of the main body 2. Further, the tilting metal fitting 4 has its end on the main body 2 side (the right end in FIGS. 1 and 2) fixed to the outer bottom surface of the main body 2, and the end on the opposite side of the main body 2 (FIGS. 1 and 2). Is a left end of the main body 2 and is also fixed to the outer peripheral surface of the main body 2. Further, the tilting metal fitting 4 has a shape in which the tip end side is bent toward the upper side of the main body 2 from near the center in the longitudinal direction. As shown in FIG. 2, the tip end side of the tilting metal fitting 4 has a length a from the main body 2 in a second direction which is a direction orthogonal to the first direction when viewed from the upper side of the main body 2. It is provided so as to protrude by [mm]. The length a is a length in which the opening 41 is arranged outside the main body 2 when viewed from the upper side of the main body 2. Further, the length a is preferably 0.5 times or less of the maximum length b [mm] of the main body 2 in the first axial direction.

Further, as shown in FIG. 3, an opening 41 is formed at the tip of the tilting metal fitting 4 so that the auxiliary winding hook 6 shown in FIG. The opening 41 is formed to have a second axial length c [mm] and a first axial length d [mm] when viewed from the upper side of the main body 2. In the example shown in FIG. 3A, the tip end side of the opening 41 is convexly curved, and in such a case, the length c is the maximum length of the opening 41 in the second axial direction. To do. Further, as shown in FIG. 4, the vertical width of the auxiliary winding hook 6 is referred to as e [mm] and the lateral width thereof is referred to as f [mm]. The vertical width d of the auxiliary winding hook 6 is the maximum length in the width direction (lateral direction) when the auxiliary winding hook 6 is viewed from the side as shown in FIG. It corresponds to the length c of the opening 41 in the second axial direction when engaging with the metal fitting 4. The vertical width e of the auxiliary winding hook 6 is the maximum length in the width direction (lateral direction) when the auxiliary winding hook 6 is viewed from the front as shown in FIG. It corresponds to the length d of the opening 41 in the second axial direction when engaging with the metal fitting 4. Further, the tip and the shape of the tilting metal fitting 4 are formed so that the hook-shaped tip of the auxiliary winding hook 6 can be engaged.

Further, the tilting metal fitting 4 is provided with an opening 41 so that the auxiliary winding hook 6 can be engaged from both the inner side from the main body section 2 side and the outer side opposite to the inner side. The state in which the auxiliary winding hook 6 is engaged with the tilting fitting 4 from the inside means that the hook-shaped tip of the auxiliary winding hook 6 is inside the tip of the auxiliary winding hook 6 as shown in FIG. 5A. It is in a state of being engaged through the opening 41 from the right side in FIG. The state in which the auxiliary winding hook 6 is engaged with the tilting fitting 4 from the outside means that the hook-shaped tip of the auxiliary winding hook 6 is relative to the tip of the auxiliary winding hook 6 as shown in FIG. 6A. The outer side (the right side in FIG. 6) is engaged through the opening 41.

In order that the auxiliary winding hook 6 can be reliably engaged with the tilting fitting 4 from both sides, the length d of the opening 41 in the first axial direction is equal to the vertical width e of the auxiliary winding hook 6. It is preferably 1.1 times or more, and more preferably 1.2 times or more. Further, in order for the auxiliary winding hook 6 to be reliably engageable with the tilting metal fitting 4 from both sides, the second axial length c of the opening 41 is equal to the lateral width f of the auxiliary winding hook 6. It is preferably 1 times or more, and more preferably 1.5 times or more. By setting the dimension of the opening 41 as described above, it becomes easy to insert the auxiliary winding hook 6 into the opening 41 from the inside even in a large crane such as an overhead crane, and the auxiliary winding hook 6 can be more reliably attached. It can be engaged with the tilting fitting 4.

In the present embodiment, the chute pan 1 is lifted by the pair of main winding hooks 7, and the auxiliary winding hooks 6 are raised in a state in which the tilting metal fitting 4 is engaged with the auxiliary winding hooks 6, whereby a pair of trunnion shafts is provided. The chute pan 1 tilts around the axis where 3 is opposed. An example in which the chute pan 1 tilts is shown in FIGS. 5(b) and 6(b). The state of FIG. 5(b) and FIG. 6(b) is a state in which the auxiliary winding hook 6 is lifted from the state of FIG. 5(a) and FIG. 6(a) to tilt the chute pan 1. By tilting the chute pan 1 in this manner, the contained items such as scraps contained in the chute pan 1 are discharged from a position of the opening 21 opposite to the auxiliary winding hook 6.

The pair of weights 5 adjusts the balance in the tilting direction of the chute pan 1 when the chute pan 1 is lifted by an overhead crane, and is the opposite side to the side where the tip of the tilting metal fitting 4 is arranged. It is provided on the outer peripheral surface of the main body 2. It is preferable that the pair of weights 5 be provided so as to avoid the end portion (the right end portion in FIG. 2) facing the tip of the tilting metal fitting 4 on the outer peripheral surface. It is preferable that they are provided at respective distances separated by an interval. Further, as shown in FIG. 1, it is preferable that the pair of weights 5 be provided at a height of about 2/3 from the bottom with respect to the height of the main body 2 (the height in the vertical direction in FIG. 1). Further, as shown in FIG. 7, the chute pot 1 is tilted by the pair of main winding hooks 7 and the inclination θ of the upper portion of the main body 2 with respect to the horizontal direction is 5 degrees or less when viewed from the first axial direction. It is preferable that the inclination θ be 3 degrees or less. Therefore, the weights and the installation positions of the pair of weights 5 are selected according to the shapes and dimensions of the main body 2 and the tilting metal fitting 4 so that the inclination θ is 3 degrees or less. The pair of weights 5 need not be two, and one or three or more may be provided at another position as long as the condition of the inclination θ is satisfied. In addition, if the shape and size of the main body 2 can satisfy the condition of the inclination θ, the weight may not be provided. By setting the inclination θ to be 3 degrees or less, it is possible to store the contents in the chute pan 1 to the maximum extent and to stably place the chute pan 1 on the ground without tipping over.

<Modification>
Although the present invention has been described above with reference to particular embodiments, it is not intended to limit the invention by these descriptions. Other embodiments of the invention, including various modifications to the disclosed embodiments, will be apparent to persons skilled in the art upon reference to the description of the invention. Therefore, it should be understood that the embodiments of the invention described in the claims include the embodiments including these modifications described alone or in combination.

For example, in the above embodiment, the chute pan 1 contains scrap, but the present invention is not limited to this example. For example, other than the scrap, other contents such as slag used in the steelmaking process may be stored.
Further, in the above-described embodiment, the main body portion 2 of the chute pan 1 has an upper portion having a substantially rectangular shape, but the present invention is not limited to this example. The main body 2 may have a circular upper portion as in Patent Document 1, for example. Since the distance between the pair of main winding hooks 7 is usually fixed, from the viewpoint of increasing the accommodation amount, it is long in the second axial direction such as a substantially rectangular shape or an elliptical shape as in the above embodiment. It is preferably shaped.

Furthermore, in the above embodiment, the tip of the tilting metal fitting 4 has a curved shape, but the present invention is not limited to this example. For example, the tilting metal fitting 4 may have a linear shape with the opening 41 having a rectangular shape.
Further, in the above-described embodiment, the tilting metal fitting 4 is fixed to the main body portion 2, but the present invention is not limited to this example. For example, as shown in FIG. 10, the tilt metal fitting 4 may be configured to be rotatable about an end connected to the main body 2 as a fulcrum when viewed from the first axial direction. When the tilting metal fitting 4 is of the fixed type as in the above embodiment, the joint portion with the main body portion 2 is fixed, so that the load on the joint portion has a cantilever structure. However, by making the tilting metal fitting 4 rotatable so that the load on the joint with the main body 2 is reduced, the strength is superior to the fixed type.

<Effects of the embodiment>
(1) A chute pan 1 according to one aspect of the present invention is a three-point lifting type chute pan 1 that can be lifted and tilted by a crane having a pair of main winding hooks 7 and auxiliary winding hooks 6, A main body 2 having an opening 21 in the upper portion, a pair of trunnion shafts 3 provided to face the outer peripheral surface of the main body 2 and engaged with a pair of main winding hooks 7, and extending from the outer peripheral surface of the main body 2. And a tilting metal fitting 4 with which the auxiliary winding hook 6 engages via an opening 41 formed at the tip of the tilting metal fitting 4, which is suspended by a pair of main winding hooks 7. When the auxiliary winding hook 6 is engaged, the auxiliary winding hook 6 moves up and down, whereby the chute pan 1 tilts about the shaft where the pair of trunnion shafts 3 face each other, and the tilting metal fitting 4 is attached to the main body 2 side. The opening 41 of the tilting metal fitting 4 is formed so that the auxiliary winding hook 6 can be engaged from both sides of the inner side and the outer side opposite to the inner side.

Here, as described above, depending on the conditions such as the structure of the factory building and the arrangement position of the hot metal ladle, it may not be possible to tilt the chute pot, so that scrap may not be thrown into the hot metal ladle. Specifically, in the case of a factory building that is not built on the assumption that scrap is put into the chute pot, there is a case where the chute pot cannot be used because the pillars of the building are close. As an example, FIG. 8 shows a state in which scrap is thrown into the building 8 by the chute pan 1a when the conventional tilting metal fitting that cannot engage the auxiliary winding hook 6 from the outside is used. As shown in FIG. 8, the building 8 has two columns 82a and 82b provided at both ends in the left-right direction, and a crane 81 which is an overhead crane movable at least in the left-right direction between them. Further, in the building 8, three lines extending in the front-rear direction of FIG. 8, that is, lines 1 to 3 are provided side by side in the left-right direction. In the building 8, the empty hot metal ladle 83 after the hot metal taken out from the blast furnace is discharged is arranged on any of the lines 1 to 3. Then, the hot metal ladle 83 arranged on any of the lines No. 1 to No. 3 is transported to the blast furnace in order to accommodate new hot metal. Scrap from the chute pan 1a is loaded into the empty hot metal pan 83 from which the hot metal has been discharged by using the crane 81. This scrap input will be carried out without problems if it is carried out at a location that is sufficiently distant from the pillars 82a and 82b of the building 8 such as the 2nd and 3rd lines, but If the crane 81 cannot fully approach the position where it can be loaded because it is close to the pillar 82a, it cannot be carried out. This is because the auxiliary winding hook 6 has a fixed orientation, and the conventional chute pan 1a can be engaged only from the outside of the tilting metal fitting, and is not premised on the input of scrap by the chute pan 1a. Case 8 is more likely to happen.

On the other hand, in the chute pan 1 having the above-mentioned configuration (1), the auxiliary winding hook 6 can be engaged with the tilting metal fitting 4 from both inside and outside. FIG. 9 shows a state where the chute pan 1 according to the above-described embodiment is used and scrap is thrown into the chute pan 1 in the building 8. The configuration is the same as that of FIG. 8 except for the configuration of the chute pan 1 in FIG. As can be seen from FIG. 9, by using the chute pan 1 by reversing it when viewed from the first axial direction, it becomes possible for the crane 81 to be in a sufficiently separated state even on the 1st line near the pillar 82a. , Will be able to put in scrap. Regarding the 2nd line and the 3rd line, the chute pot 1 may be oriented in the same direction as in FIG. 8 as long as there is no problem in the distance between the pillar 82b and the crane 81, and it is the same as the direction of the 1st line in FIG. May be

That is, according to the configuration of (1) above, the chute pan 1 can be tilted in the inverted state regardless of the direction of the auxiliary winding hook 6 of the crane 81. As a result, it is possible to improve the rate at which the chute pot 1 throws in scraps and the like. In particular, when it is not possible to input scraps and the like using the chute pot due to the conditions of the existing building equipment and the like, it becomes possible to input scrap and the like using the chute pot without modifying the building equipment. Moreover, since it can be applied to the conventional chute pan in which the auxiliary winding hook 6 cannot be engaged from the outside by simply modifying the tilting metal fitting, the above effect can be easily obtained. it can.

(2) In the configuration of (1) above, the opening 41 of the tilting metal fitting 4 has a second axial direction which is a direction parallel to the direction in which the pair of trunnion shafts 3 face each other when viewed from the upper side of the main body 2. Has a length c of 1.2 times or more the vertical width e of the auxiliary winding hook 6, and a length d in the second axial direction which is a direction orthogonal to the first axial direction is 1 of the lateral width f of the auxiliary winding hook. It is more than 5 times.
According to the configuration of (2) above, even in a large crane such as an overhead crane, the auxiliary winding hook 6 can be easily inserted from the inside into the opening 41, and the auxiliary winding hook 6 can be more surely inserted. Can be engaged with.

(3) In the configuration of (1) or (2), the main body portion 2 is viewed from the direction in which the pair of trunnion shafts 3 face each other (first axial direction) in a state of being suspended by the pair of main winding hooks 7. The inclination of the upper part with respect to the horizontal direction is 3 degrees or less.
(4) In the configuration according to any one of (1) to (3) above, when the pair of main winding hooks 7 are lifted up, the upper part of the main body 2 is horizontal when viewed from the direction in which the pair of trunnion shafts 3 face each other. A weight 5 is provided on the outer peripheral surface of the main body portion on the opposite side to the side on which the tip of the tilting fitting 4 is arranged so that the inclination with respect to the direction is 3 degrees or less.
According to the above configuration (3) or (4), it is possible to store the contents in the chute pot 1 to the maximum extent, and to stably place the chute pot 1 on the ground without tipping over.

1 chute pan 1a chute pan 2 main body 21 opening 3 trunnion shaft 4 tilting metal fitting 41 opening 5 weight 6 auxiliary winding hook 7 main winding hook 8 building 81 crane 82a, 82b pillar 83 hot metal ladle

Claims (3)

A three-point lifting type chute pot that can be raised and lowered and tilted by a crane having a pair of main winding hooks and auxiliary winding hooks,
A main body having an opening at the top,
A pair of trunnion shafts provided to face the outer peripheral surface of the main body section, with which the pair of main winding hooks engage,
A tilting metal fitting that is provided extending from the outer peripheral surface of the main body, and that engages with the auxiliary winding hook through an opening formed at the tip end;
Equipped with
The chute pan is lifted by a pair of the main winding hooks, and the auxiliary winding hook is moved up and down in a state where the auxiliary winding hook is engaged with the tilting metal fitting, so that the chute pot moves the shaft where the pair of trunnion shafts face each other. Tilting as the center,
The tilting metal fitting is formed with an opening of the tilting metal fitting so that the auxiliary winding hook can be engaged from both the inner side from the body portion side and the outer side opposite to the inner side .
The opening of the tilting fitting has a length in the first axial direction, which is a direction parallel to the direction in which the pair of trunnion shafts face each other, as viewed from the upper side of the main body portion, and is equal to the vertical width of the auxiliary winding hook. 1.2 times or more, and the chute pan the length of the second axial direction as the first direction perpendicular to the axial direction, characterized in der Rukoto 1.5 times the width of the auxiliary winding hook .. In lifting was state by a pair of said main winding hook, viewed from the direction in which the pair of the trunnion shaft is opposed to the claim 1, wherein the inclination with respect to the horizontal direction of the upper portion of the main body portion is not more than 3 degrees The shoot pan described. The tip of the tilting metal fitting is such that the upper part of the main body is inclined by 3 degrees or less with respect to the horizontal direction when viewed from the direction in which the pair of trunnion shafts face each other in a state of being suspended by the pair of main winding hooks. The chute pan according to claim 1 or 2 , wherein a weight is provided on the outer peripheral surface of the main body portion opposite to the side on which the is placed.

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