JP5125895B2 - Reclaimer - Google Patents

Description

  The present invention relates to a reclaimer used when a bulk material such as iron ore or coal stacked in a raw material yard is discharged from the raw material yard.

  For example, the reclaimers disclosed in Patent Documents 1 to 3 are known as machines that discharge raw materials such as iron ore and coal stacked in a raw material yard from the raw material yard. As shown in FIG. 5, this type of reclaimer includes a traveling carriage 12 that travels on a rail 11 laid in a raw material yard, and a boom belt conveyor provided on the traveling carriage 12 so as to be capable of turning and raising. A bucket wheel 14 having a structure shown in FIGS. 6 to 8 is rotatably provided at the tip end portion of 13.

The bucket wheel 14 has a plurality of buckets 15 that scrape the bulk material stacked in the raw material yard, and the bulk material scraped off by the buckets 15 is stored in the bucket 15 as the bucket wheel 14 rotates. When the posture changes, the material drops from the raw material outlet formed on the bucket 15 onto the chute 16 (see FIG. 7) and is delivered to the boom belt conveyor 13.
The bucket wheel 14 has a plurality of spoke frames 19 that connect the wheel bosses 17 and the wheel rims 18, and the fan-shaped opening formed by the spoke frames 19 has a plurality of reinforcements for reinforcing the spoke frames 19. It is blocked by the reinforcing plate 20.

In such a reclaimer, a reinforcing plate 20 that reinforces the bucket wheel 14 is provided in the vicinity of the chute 16 that receives the bulk material from the bucket 15. For this reason, a part of the bulk material scraped off by the bucket 15 passes through a gap 21 (see FIG. 7) formed between the chute 16 and the reinforcing plate 20, and the bulk material that has passed through the gap 21 Wearing the reinforcing plate 20 vigorously causes wear or thinning in the reinforcing plate 20, which causes a problem of reducing the strength of the bucket wheel 14.
Therefore, in order to prevent the strength of the bucket wheel 14 from being reduced due to wear or thinning of the reinforcing plate 20, it has been studied to omit the reinforcing plate 20.
JP-A-11-334880 JP 2000-136027 A Japanese Utility Model Publication No. 54-13191

However, as shown in FIG. 8, the spoke frame 19 of the bucket wheel 14 is formed by welding and joining three plate-like members 22, 23, 24 in an I shape. Part of the bulk material scraped off by the above enters into the concave portion 25 formed by the plate-like members 22 to 24. And since the rose material raw material which entered into the concave part 25 moves in the concave part 25 in the longitudinal direction of the spoke frame 19 as the bucket wheel 14 rotates, there is a risk that the rotational balance of the bucket wheel 14 will be greatly disrupted. there were.
The present invention has been made in view of the above-described problems, and an object thereof is to provide a reclaimer capable of discharging the bulk material stacked in the raw material yard without greatly losing the rotational balance of the bucket wheel. To do.

In order to solve the above-mentioned problems, a reclaimer according to the invention described in claim 1 includes a traveling carriage that travels on a rail laid in a raw material yard, and a boom belt conveyor that is provided on the traveling carriage so as to be capable of turning and raising. And a bucket wheel rotatably provided at the tip of the boom belt conveyor, and a plurality of spoke frames for connecting the wheel boss and the wheel rim of the bucket wheel welded and joined three plate-like members into an I shape In the reclaimer formed as described above, there is provided a plate-like cover member having substantially the same plate width as the opening width of the concave portion formed by the three plate-like members and having substantially the same length as the opening length of the concave portion. The three plate-like members are welded and joined to two plate-like members parallel to each other, and the concave portion is covered with the plate-like cover member. It is.
A reclaimer according to a second aspect of the present invention is the reclaimer according to the first aspect, wherein an arcuate corner portion is provided at a joint portion between the wheel boss and the spoke frame and a joint portion between the wheel rim and the spoke frame. It is characterized by that.

  According to the reclaimer according to the first aspect of the present invention, the plate-like cover has a plate width substantially the same as the opening width of the concave portion formed by the three plate-like members and has a length substantially the same as the opening length of the concave portion. The member is welded and joined to two plate-like members parallel to each other among the three plate-like members, and the concave portion is covered with the plate-like cover member, so that the spoke frame welds and joins the three plate-like members into an I shape. Even if it is formed, the bulk material does not enter the concave portion. Therefore, it is possible to pay out the raw materials stacked in the raw material yard without greatly losing the rotational balance of the bucket wheel.

  According to the reclaimer according to the second aspect of the present invention, the outer peripheral surface of the wheel boss and the wheel can be obtained by providing the arc-shaped corner portion at the joint portion between the wheel boss and the spoke frame and the joint portion between the wheel rim and the spoke frame. It is difficult for the raw material to deposit on the inner peripheral surface of the rim. Therefore, it is possible to pay out the raw materials stacked in the raw material yard without greatly losing the rotational balance of the bucket wheel.

Hereinafter, the reclaimer according to the present invention will be described with reference to FIGS. 1 to 4, but the same parts as those shown in FIGS. 5 to 8 are denoted by the same reference numerals, and detailed description thereof will be omitted.
FIG. 1 is a front view of a bucket wheel of a reclaimer according to a first embodiment of the present invention, FIG. 2 is a view showing a cross section AA of FIG. 2, and the first embodiment of the present invention is shown in FIGS. The first point different from that shown in FIG. 8 is that the plate width is approximately the same as the opening width of the concave portion 25 formed by the plate-like members 22 to 24 and has the same length as the opening length of the concave portion 25. The plate-shaped cover member 26 is welded to the two plate-shaped members 23 and 24 parallel to each other among the plate-shaped members 22 to 24, and the concave portion 25 is covered with the plate-shaped cover member 26.

Further, the second point of the first embodiment of the present invention different from that shown in FIGS. 6 to 8 is that the joint between the wheel boss 17 and the spoke frame 19 and the joint between the wheel rim 18 and the spoke frame 19 are the same. This is a point in which an arcuate corner portion 27 is provided in the portion.
As described above, the plate-like cover members 26 having substantially the same plate width as the opening width of the concave portion 25 and substantially the same length as the opening length of the concave portion 25 are parallel to each other among the plate-like members 22 to 24. When the concave portion 25 is covered by the plate-like cover member 26 by welding and joining the two plate-like members 23 and 24, the spoke frame 19 is formed by welding and joining the three plate-like members 22 to 24 in the I shape. Also, the raw material of roses does not enter the concave portion 25. Accordingly, it is possible to pay out the bulk material stacked in the raw material yard without greatly losing the rotational balance of the bucket wheel 14.

  Further, when an arcuate corner portion 27 is provided at the joint between the wheel boss 17 and the spoke frame 19 and the joint between the wheel rim 18 and the spoke frame 19, the outer peripheral surface of the wheel boss 17 and the inner peripheral surface of the wheel rim 18 are provided. This makes it difficult to deposit raw materials. Therefore, it is possible to dispense the bulk material stacked in the raw material yard without greatly losing the rotational balance of the bucket wheel 14.

  In the first embodiment of the present invention described above, both end portions in the width direction of the plate-like cover member 26 are welded to the left and right end surfaces of the plate-like members 22 and 23 so that the concave portion 25 is covered with the plate-like cover member 26. However, as in the second embodiment of the present invention shown in FIGS. 3 and 4, both end surfaces in the width direction of the plate-like cover member 26 are welded to the opposing flat portions of the plate-like members 22 and 23. The concave portion 25 may be covered with the plate-like cover member 26.

It is a front view of the bucket wheel of the reclaimer which concerns on the 1st Embodiment of this invention. It is a figure which shows the AA cross section of FIG. It is a front view of the bucket wheel of the reclaimer which concerns on the 2nd Embodiment of this invention. It is a figure which shows the BB cross section of FIG. It is a figure which shows schematic structure of a reclaimer. It is a front view of the bucket wheel of the conventional reclaimer. It is a figure which shows CC cross section of FIG. It is a figure which shows the DD cross section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Rail 12 Traveling carriage 13 Boom belt conveyor 14 Bucket wheel 15 Bucket 16 Chute 17 Wheel boss 18 Wheel rim 19 Spoke frame 20 Reinforcement plate 21 Gap 22, 23, 24 Plate member 25 Concave portion 26 Plate cover member 27 Arc-shaped Corner section

Claims (2)

A traveling carriage that travels on rails laid in the raw material yard, a boom belt conveyor that can be swung and raised on the traveling carriage, and a bucket wheel that is rotatably provided at the tip of the boom belt conveyor; A plurality of spoke frames connecting the wheel bosses of the bucket wheel and the wheel rim are formed by welding and joining three plate-like members into an I shape,
A plate-like cover member having substantially the same plate width as the opening width of the concave portion formed by the three plate-like members and having substantially the same length as the opening length of the concave portion is formed on the three plate-like members. A reclaimer characterized in that the concave portion is covered with the plate-like cover member by welding to two plate-like members parallel to each other. 2. The reclaimer according to claim 1, wherein arc-shaped corner portions are provided at a joint portion between the wheel boss and the spoke frame and a joint portion between the wheel rim and the spoke frame.

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