JPH107258A - Bucket wheel type scraping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take in powder and grain regardless of the taking-in direction of a scraping device by raising a cover for partially-covering an annular dis posed bucket on the upper side of a bucket circular path at the time of taking in the powder and grain under a forward moving condition, and swinging and fixing the cover onto the lower side of the circular path at the time of taking in the powder and grain under a backward moving condition. SOLUTION: At the time of taking in powder and grain 9 by moving a scraping-in device 1 forward, a cover 12 is swung onto the upper side of a bucket 8 disposed in an annular shape by the second driving motor 14 and the cover 12 is locked and fixed by the first upper side fixing pin 18 and the first clamp 20 to scrape in the powder and grain 9. At the time of taking in the powder and grain 9 by moving the scraping-in device 1 backward in the direction of an arrow mark 25, the cover 12 is swung onto the lower side of the bucket 8 disposed in an annular shape by the second driving motor 14 to take in the powder and grain in such a condition as the cover 12 is locked and fixed by the first lower side fixing pin 16 and the first clamp 20. It is thus possible to take the powder and grain 9 in the cover 12 without diffusing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket wheel type scraping device, and more particularly to a bucket wheel type scraping device provided in an unloader for unloading a granular material from a ship or the like.

[0002]

2. Description of the Related Art A bucket wheel type scraping device scrapes, for example, powdery particles in a ship 7 by rotating a bucket wheel formed by arranging a plurality of buckets in a ring shape. The powder is dropped and discharged from each bucket to a transport means such as a finned conveyor.

[0003] A bucket wheel type scraping device 1 is shown in FIG.
As shown in the figure, the fin conveyor 2 is located inside the unloader.
It is equipped at the tip of the vertical boom 3 provided with. As shown in FIG. 9, the bucket wheel type scraping device 1 is configured such that the power of the first drive motor 4 is transmitted by the chain 5 and the bucket wheel 6 moves in the counterclockwise direction as indicated by an arrow 11 in the figure. Rotate. On the outer periphery of the bucket wheel 6,
A plurality of buckets 8 are provided, and the granular material 9 scraped by the buckets 8 is fed into the finned conveyor 2 via the chute 10.

[0004]

However, since the rotation of the bucket wheel 6 is determined in one direction in which the granular material 9 is scooped up from below by the bucket 8, the conventional bucket wheel type scraping method is used. In the apparatus 1, it is only possible to take in by moving the scraping device 1 indicated by the arrow 13 in FIG. 9 forward, and it is not possible to take in by moving the scraping device 1 in the backward direction.
As a method of remedying this drawback, the bucket 8 is made movable so that the direction of scraping can be changed, a mechanism for rotating the bucket wheel 6 in the reverse direction, or the direction in which the whole scraping device 1 is taken in with respect to the vertical boom 3 can be used. It is conceivable to make it possible to change However, this method has a drawback in that the apparatus is complicated and large-scale, so that problems occur in strength and weight.

[0005] Further, since the scraping device 1 is a device for taking in the granular material 9 by pushing the bucket 8 into the granular material 9, when the amount of the granular material 9 in the ship 7 decreases, the amount that can be taken in is reduced. And there is a risk that the rotating bucket wheel 6 may come into contact with the bottom of the boat, making it difficult to control the position of the scraping device 1. In order to remedy this drawback, a method of using a bulldozer or the like to collect and take in the powder and granular material 9 into the scraping device 1 is considered. In addition, there is a problem that a person for operating the device is required, and this is not a fundamental solution.

[0006] The present invention has been made in view of such circumstances, and can take in particles regardless of the direction in which the scraping device is taken in, and further improves the ability to take in particles. It is an object of the present invention to provide a bucket wheel type scraping device which can be achieved with a simple configuration.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a bucket wheel type scraper in which a bucket wheel having a plurality of buckets arranged in an annular shape is rotated to scrape powder or granular material with the bucket. In the picking device, an arc-shaped cover that partially covers the annularly arranged bucket and is swingable with respect to the annular bucket, driving means for swinging the cover, and swinging by the driving means Fixing means for fixing the cover at a predetermined position.

According to the present invention, when the scraping device is moved forward to perform the operation of taking in the granular material, the cover is raised to the upper side of the bucket circular orbit and taken in in the same manner as in the prior art. Then, when taking in the powder while moving the scraping device backward in the direction opposite to the above-mentioned taking-in direction, the cover is swung to the lower side of the circular orbit and fixed. As a result, the movement of the scraping device and the peaks of the granular material broken by the scraping in the bucket are taken into the cover without spreading,
The granular material taken into the cover is scraped off with a bucket.
Further, since the lower portion of the bucket wheel is covered with the cover, there is no danger that the bucket will contact the bottom of the ship, for example.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a bucket wheel type scraping device according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the same devices and members as those in FIGS. 8 and 9 described in the related art will be described with the same reference numerals. FIG. 1 shows a bucket wheel type scraping device 1 of the present invention.
FIG. 2 is a side view illustrating a first embodiment of FIG.
It is sectional drawing along the AA line. As shown in FIG. 1 and FIG. 2, the scraping device 1 is mounted on the tip of a vertical boom 3. That is, a casing 38 as a base is supported at the tip of the vertical boom 3, and the wheel 6 is rotatably supported on the outer periphery of the casing 38. On the outer periphery of the wheel 6,
A bucket 8 having a substantially fan-shaped cross section is fixed at a predetermined interval. The first drive motor 4 for rotating the wheel 6 is attached to the casing 38 via the support arm 15, and the chain 5 is suspended between the pulley 17 of the first drive motor 4 and the pulley on the outer periphery of the wheel. Passed. Thereby, when the first drive motor 4 operates, the bucket 8
Rotates in the direction of arrow 19 in FIG.
The granular material 9 scraped off by the bucket 8 is transferred to the finned conveyor 2 disposed in the vertical boom 3 via the chute 10.
Is transferred to

Further, the scraping device of the present invention is provided with an arc-shaped cover 12 that partially covers the annularly arranged bucket 8 and is swingable with respect to the annularly arranged bucket 8. Can be The cover 12 has an inlet 12A and an outlet 12B of the rotating bucket 8 formed therein. This cover 12
Is pivotally supported on the side surface of the casing 38 so as to be capable of swinging. Furthermore, a second drive motor 14 that can rotate the cover 12 forward and backward is supported on the side surface portion 38A of the casing 38 through the opening 29 in the cover side surface portion, and the swing of the cover 12 is fixed. A first clamp 20 to be operated and a first servo lifter 22 for operating the first clamp 20 are provided. On the other hand, a first upper fixing pin 18 for engaging the cover 12 with the first clamp 20 above the bucket 8 arranged in an annular shape, The first clamp 20 is located below the bucket 8
And a first lower fixing pin 16 to be engaged with the first projection. As a result, the cover 12 is moved by the second drive motor 14 so that the first clamp 20 is engaged with one of the first upper fixing pin 18 and the first lower fixing pin 16. This allows the cover 12 to be locked above or below the circular orbit on which the bucket 8 rotates.

Next, the operation of the bucket wheel type scraping device configured as described above will be described. FIG. 3 shows a case where the scraping device 1 is moved forward in the direction of the arrow 23 to perform the operation of taking in the granular material 9. In this case, since the cover 12 does not need to be used, the cover 12 is swung by the second drive motor 14 above the annularly arranged bucket 8 so that the first upper fixing pin 18 and the second One clamp 20
To lock and fix the cover 12. In this state, the granular material 9 is scraped off by the bucket 8 while being scooped up from below by the bucket 8 as in the conventional case.

FIG. 4 shows a case in which the scraping device 1 is moved backward in the direction of the arrow 25 opposite to the forward direction to carry out the operation of taking in the granular material 9. In this case, the cover 12 is swung below the annularly arranged bucket 8 by the second drive motor 14, and the first lower fixing pin 16 and the first clamp 20 are rotated.
With the cover 12 locked and fixed by the
Perform the import operation. When the cover 12 is lowered, it is preferable that the entrance of the cover 12 be oriented in the same direction as the horizontal movement direction of the scraping device 1. In this manner, when the cover 12 is lowered, the powder and granular material 9 broken by the movement of the scraper 1 and the scraping by the rotation of the bucket 8 is moved.
Are taken into the cover 12 without being diffused. The granular material 9 taken into the cover 12 is scraped off by the bucket 8. Therefore, even if the take-in operation is performed while moving the scraping device 1 in the reverse direction, the take-up operation of the granular material 9 can be efficiently performed without reduction. In this case, if the bucket 8 is designed so as to be substantially inscribed in the cover 12, the granular material 9 is less likely to be missed and can be taken in most efficiently.

When the amount of the granular material 9 decreases, as shown in FIG. 4, the entire scraping device 1 moves in the direction of arrow 27 in FIG. 9 can be increased. As a result, FIG.
Even when the amount of the granular material 9 is small as in the case of the bottom dredging, the intake amount can be improved. Further, if the bottom is dredged with the cover 12 lowered, the bucket 8 does not directly hit the bottom of the ship or the like, so that damage to the bucket or the bottom of the ship can be prevented.

FIG. 6 is a side view for explaining a bucket wheel type scraping device according to a second embodiment of the present invention. The second embodiment differs from the first embodiment in FIG. 1 in that a substantially horizontal bottom plate 26 is provided on the inlet 12A side of the cover 12.
A and a pair of side plates 26B, 26B are provided with a dust-draining bottom-draining cover 26 composed of a pair of side plates 26B. is there.

As shown in FIG. 6, the bottom dredge cover 2
In the case 6, the side surface 26C extending from the side plate 26B is swingably supported by the side surface 38A of the casing 38.
Casing 38 through opening 29 of cover side portion 12C
A side surface portion 38A supports a third drive motor 28 that can rotate forward and reverse to swing the bottom dredge cover 26, and a second clamp 34 that fixes the swing of the bottom dredge cover 26. A second servo lifter 36 for operating the second clamp 34 is provided. On the other hand, the bottom dredge cover 26
A second upper fixing pin 32 for engaging the bottom dredge cover 26 with the second clamp 34 on the upper side of the annularly arranged bucket 8 and a bottom dredge cover 26 And a second lower fixing pin 30 that engages with the second clamp 34 at a front position on the side of the cover 12 inlet 12A. As a result, the bottom drive cover 26 is swung by the third drive motor 28 to attach the second clamp 34 to one of the second upper fixing pin 32 and the second lower fixing pin 30. By engaging, the bottom dredge cover 26
Can be locked and fixed to the upper side of the annularly arranged bucket 8 or the front position on the side of the cover 12 entrance 12A.

Therefore, according to the second embodiment,
The cover 12 is shaped so as to easily adhere to the slope of the granular material 9,
By forming the bottom dredge cover 26 into a shape that makes it easy to scrape the granular material 9 from the ship bottom, there is an effect of further improving the bottom dredge ability. As shown in FIG. 7, the worm gear 2 is used to transmit power from the second drive motor 14 to the cover 12.
4, the first lower fixing pin 16, the first upper fixing pin 18, the first clamp 20, and the first servo lifter 22 in FIG. 1 can be omitted. In this case, effects such as reduction of manufacturing cost, simplification of manufacturing and maintenance, and weight reduction by reducing the number of parts can be obtained. Although the clamp and the servo lifter are used in the embodiment of FIG. 6, the same effect can be obtained in this case also by using a worm gear for power transmission.

[0017]

As described above, according to the bucket wheel scraping device of the present invention, an arc-shaped bucket which partially covers an annularly disposed bucket and is swingable with respect to the annular bucket. With a simple configuration of fixing the cover at a predetermined position, even when scraping the powder while moving the scraping device in the reverse direction opposite to the normal forward movement direction, by using the cover down, The powder is taken into the cover without being diffused. Thus, the powder and granules can be scraped regardless of the direction in which the scraping device takes in the powder.

Further, unlike the conventional apparatus, the apparatus for taking in the granular material regardless of the taking-in direction is complicated and not large-scale, so that there is no problem in strength and weight and the production cost is low.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a configuration of a first embodiment of a bucket wheel type scraping device of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a view for explaining the first embodiment, and is an explanatory view in a case where the cover is lifted and scraped while moving forward.

FIG. 4 is a view for explaining the first embodiment, and is an explanatory view in a case where the cover is lowered and scraped while moving backward.

FIG. 5 is a view for explaining the first embodiment, and is an explanatory view in a case where a bottom is dredged while lowering a cover and moving backward.

FIG. 6 is a side view illustrating a configuration of a bucket wheel type scraping device according to a second embodiment of the present invention.

FIG. 7 is a side view illustrating a configuration of an embodiment using a worm gear for transmitting power from a motor to a cover.

FIG. 8 is an overall configuration diagram of an unloader using a bucket wheel type scraping device.

FIG. 9 is a side view showing a configuration of a conventional bucket wheel type scraping device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Scrape device 6 ... Bucket wheel 8 ... Bucket 9 ... Powder and granular material 12 ... Cover 14 ... Second drive motor 16 ... 1st lower fixing pin 18 ... 1st upper fixing pin 20 ... 1st , A first servo lifter 24, a worm gear 26, a bottom dredge cover 28, a third drive motor 30, a second lower fixing pin 32, a second upper fixing pin 34, a second clamp 36 Second servo lifter

Claims (2)

[Claims] 1. A bucket wheel type scraping device in which a bucket wheel in which a plurality of buckets are arranged in an annular shape is rotated to scrape particles with the bucket, wherein the bucket arranged in an annular shape is partially covered. An arc-shaped cover swingable with respect to an annular bucket, a driving unit for swinging the cover, and a fixing unit for fixing the cover swung by the driving unit at a predetermined position. A bucket wheel type scraping device, characterized in that: 2. A bucket wheel type scraping device according to claim 1, further comprising a bottom dredge cover for dripping the granular material into the cover at an entrance side of the cover.