JPH0730765Y2 - Fork structure for blast furnace residue transfer - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] <Industrial Application Field> The present invention is a vehicle for transporting residues such as residual iron in the blast furnace to the outside when the aging blast furnace is repaired. The present invention relates to a blast furnace residue transfer fork structure for mounting on a main body and holding or mounting the above residue.

<Prior art> Normally, the blast furnace needs to be regularly repaired due to problems such as the service life of refractory bricks. At the time of this repair work, since the hot metal remains at the bottom of the blast furnace and remains as residual iron, conventionally, after this residual iron has been cooled and solidified, it is crushed using blasting and carried out by a bulldozer. This is done (see, for example, Japanese Patent Laid-Open No. 52-5603).

In the work described above, if the crushed residual iron mass is large, it cannot be carried out by a relatively small bulldozer that can penetrate into the blast furnace, and in some cases, blasting is used again to crush it into smaller masses. Inside, a worker hooked the wire on the lump and pulled it out with a bulldozer.

<Problems to be solved by the device> However, since the work of crushing the lump of residual iron using blasting again cannot be performed in parallel with other work, it becomes a factor of prolonging the repair work period In the work of pulling and pulling, it is necessary to lower the temperature of the atmosphere in the furnace and the temperature of the residual pig iron in order to ensure the work safety in the blast furnace, which is also a factor that prolongs the period of the repair work.

Therefore, for example, as disclosed in Japanese Utility Model Publication No. 2-15918, a clamp-type fork attachment having a pair of forks in the lower portion and a pair of arms rotating in the upper portion is attached to a vehicle, and the attachment is left. Although it is possible to grasp the pig iron and convey it to the outside, the crushed residual pig iron mass is not uniform in size and has a wide variety of shapes. It was difficult to grip a smaller lump of residual pig iron, and it was impossible to remove a finer lump of residual pig iron. Further, when a large number of lower fork pawls are provided or a flat bottom plate is provided between the plurality of lower fork pawls, it becomes difficult to invade the fork pawls under a large lump of residual iron. Further, depending on the structure of the upper arm, it is difficult to reliably hold lumps of various sizes or lumps of complicated shape.

In view of the problems of the prior art as described above, the main purpose of the present invention is to easily transfer a large lump of residual iron or the like in the blast furnace to the outside in order to finish the blast furnace repair work in the shortest possible time. (EN) Provided is a blast furnace residue transfer fork structure capable of easily grasping or mounting relatively fine residue and transferring it to the outside.

[Construction of the Invention] <Means for Solving the Problems> According to the present invention, such a purpose is to install a blast furnace residue transfer fork for transferring and removing the residue in the blast furnace attached to the vehicle body. A structure, a base extending substantially perpendicular to the floor and attachable to the vehicle body;
Three lower fork claws which are integral with the base and extend substantially horizontally to the floor surface and which are parallel to each other, and a bottom plate which is provided from a base end part to an intermediate part between the fork claws, Two upper parts that are independently rotatable with respect to the fork claws such that the tip ends approach / separate from above and are pivotally supported by the base so as to be located between the fork claws. The present invention is achieved by providing a fork structure for transferring a blast furnace residue, which has an arm and a driving means for independently driving each of the upper arms.

<Operation> In this way, in order to grip a large lump of residual iron,
The lower fork claw of the book can be easily conveyed to the outside by intruding it under the lump and grasping it with the upper arm. At this time, if the tip end portion of the lower fork pawl has a taper whose upper end surface is inclined downward, the fork pawl can easily enter under the lump of residual pig iron. Further, in order to grip a rather small lump, it is sufficient to grip the lower fork claw at the center, one of the lower fork claws, and either the left or right upper arm. At this time, the upper arm is located between the fork claws, and each of them rotates independently, so that it is possible to easily grasp a complicated large or small lump. Further, the fine residue may be mounted on the bottom plate provided from the middle portion to the base end portion of the lower fork claw.

<Embodiment> Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a fork attachment 1 to which the present invention is applied. The fork attachment 1 includes brackets 3a and 3b for attaching to a vehicle body such as a bulldozer, and three L-shaped portions 2a, 2b and 2c provided so as to extend substantially perpendicular to the floor surface. With a base 2 and from each part 2a, 2b, 2c of the base 2 forward or first
Fork claws 4 to 6 extending to the left in the figure, and each fork claw 4 from the base end part to the middle part of the fork claws 4 to 6
6 to the bottom plate 7 and the fork claws 4 described above
Arms 11 and 12 are rotatably supported on the upper end of the base 2 by pivoting parts 8 and 9 in the direction of approaching / distinguishing from 6. Between the base end portions 11a and 12a of the arms 11 and 12 and the support portions 2d and 2e of the base 2, the arm driving hydraulic cylinder 1 is provided.
There are four and fifteen. Tip 4 of fork claws 4-6
The a, 5a, and 6a are separate members from the fork claws 4 to 6, and their upper end surfaces are inclined downward and are tapered, so that they can be easily inserted under the lump of residual pig iron described later. There is. A large number of protrusions 11b and 12b are provided on the surfaces of the arms 11 and 12 facing the fork claws 4 to 6 so that a large lump of residual iron, which will be described later, can be reliably gripped. Strength members 16-18 are provided between the fork claws 4-6 and between the portions 2a, 2b, 2c. In practice, the position of the reinforcing member 16 is arbitrary and may be determined in consideration of the relative positional relationship with the bottom plate 7.

As shown in FIG. 4, the fork attachment 1 as described above holds or mounts the residual irons 24 to 27 that have been destroyed by blasting in advance in the blast furnace 23 attached to the vehicle main body 21 and conveys them to the outside. Here, for example, relatively large residual iron 24
In order to grip, the fork claws 4 to 6 are made to invade from the tip portions 4a, 5a, 6a under the residual iron, the upper arms 11, 12 are rotated and gripped, lifted and conveyed to the outside. At this time,
Since the upper arms of both the upper arms 11 and 12 are located between the fork claws and rotate independently, it is possible to easily grasp a large or small lump having a complicated shape. If the residual pig iron 25 is so large that it cannot be lifted, the residual pig iron 25 is grasped and slid out to the outside in the same manner as described above. Further, in the case of the relatively small residual iron 26, for example, the nail is inserted so as to mount the residual iron 26 between the fork nails 4 and 5, and is grasped by the arm 11 or the arm 12 and conveyed to the outside. In addition, in the case of the relatively fine granular residual iron 27, it is impossible to grip with the arms 11 and 12, and the diameter of the residual iron is smaller than the interval between the lower fork claws 4 to 6. The residual iron 27 is mounted on the bottom plate 7, and the entire fork attachment 1 is tilted backward and conveyed to the outside.

[Advantage of the Invention] As described above, according to the present invention, the residue can be suitably held and transferred to the outside regardless of the size of the residue in the blast furnace, and the inside of the blast furnace during the blast furnace repair work can be carried out. Since the residue can be removed as quickly as possible, the blast furnace repair period can be shortened, which is a great effect.

[Brief description of drawings]

1 is a side sectional view of a fork attachment to which the present invention is applied, which is taken along line II in FIG. FIG. 2 is a plan view of a fork attachment to which the present invention is applied. FIG. 3 is a rear view of a fork attachment to which the present invention is applied. FIG. 4 is an explanatory view showing the work for removing the residue in the blast furnace by using the fork attachment to which the present invention is applied. 1 ... Fork attachment 2 ... Base, 2a, 2b, 2c ... Part 2d, 2e ... Support part, 3 ... Bracket 4-6 ... Lower fork claws 4a, 5a, 6a ... Tip part 7 ... Bottom plate, 8, 9 ...... Pivot parts 11, 12 ...... Arms, 11a, 12a ...... Base end parts 11b, 12b ...... Protrusions, 14, 15 ...... Hydraulic cylinders 16-18 ...... Strength members, 21 ...... vehicles Main unit 23 …… Blast furnace, 24-27 …… Still pig iron

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yukio Ishizaka, 2-19-1 Sanno, Yawatahigashi-ku, Kitakyushu, Fukuoka Prefecture, Okumuragumi Kyushu Branch (72) Inventor, Tatsuhiro Kocho Sanno, Hachiman-gu, Kitakyushu, Fukuoka 2-19-1 Okumura Gumi Kyushu Branch Co., Ltd. (56) References JP-A-52-5603 (JP, A) SAIKAI 61-102657 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A blast furnace residue carrying fork structure, which is mounted on a vehicle body to carry and remove residues in a blast furnace, the fork structure carrying blast furnace residues extending substantially perpendicularly to a floor surface and to the vehicle body. A base that can be attached, three lower fork pawls that are integral with the base and extend substantially horizontally with respect to the floor surface and that are parallel to each other, and extend from the base end portion to the middle portion between the fork pawls. The bottom plate provided and the fork pawl are independently rotatable in a direction such that the tip end portion approaches or separates from above, and is pivotally supported on the base so as to be located between the fork pawls. Fork structure for transporting blast furnace residue, comprising: two upper arms that are formed; and a drive unit that independently drives each of the upper arms.