JP2001322722A - Foreign matter collecting device for continuous unloader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter collecting device for a continuous unloader to be excellent in maintainability and capable of increasing the efficiency of foreign matter collection. SOLUTION: A foreign matter collection screen 2 to selectively capture a foreign matter in a bulk is removable situated inclinably based on a horizontal direction in the middle of the bulk drop route. An inclining table 4 is situated below and in succession to the foreign matter collection screen 2 and a foreign matter collecting box 5 is situated below the inclining table 4 and a foreign matter captured by the foreign matter collection screen 2 is slipped down from the inclining table 4 into a collecting box 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign substance collecting apparatus of a continuous unloader for collecting foreign substances contained in bulk materials such as coal being conveyed.

[0002]

2. Description of the Related Art First, an outline of a continuous unloader will be described with reference to FIG.

As shown in FIG. 4, a continuous unloader 21
Is a traveling section 24 traveling on a rail 23 provided on the wharf 22, a boom 25 rotatably and undulatingly provided on the traveling section 24, and a bucket elevator 27 provided at one end of the boom 25. And The bucket elevator 27 includes an elevator unit 29 and a scraping unit 30. In the elevator unit 29 and the scraping unit 30, buckets 31 for scraping loose materials 34 such as coal are arranged at predetermined intervals. A conveyor 32 is provided so as to be able to circulate.

[0004] By circulating the bucket conveyor 32,
The loose objects 34 loaded in the hold 33 are
After being scraped into the bucket 31 by the bucket 31 located at 0, it is carried upward by the elevator unit 29. The roses transported upward are transferred to a boom conveyor 36 provided on the boom 25 and transported toward the wharf 22. The loose objects transported toward the wharf 22 are further transferred to a transport conveyor 37 via a central chute 35 and transported to a predetermined storage or the like.

The boom 25 is provided with a crane 39 which can move in the length direction of the boom 25 and can be lowered and raised.
Is provided.

Incidentally, since foreign matter such as lump of iron may be mixed in the bulk material 34 such as coal, the foreign material 34 is discriminated and collected before the bulk material 34 is transported to a storage or the like. It is desirable to do.

Therefore, conventionally, the central chute 35
By disposing a box having a gap through which only loose objects can pass, foreign substances contained in the loose objects are captured in the box and the foreign substances are collected. This box is usually supported by an arm, which can hold the box in the central chute 35 and pull it out of the central chute 35 It had a structure that could be used.

[0008]

However, the above-mentioned conventional foreign matter collecting apparatus has several drawbacks. For example, in the conventional foreign matter collection device, the box supported by the arm could not be removed, so that there was a problem that the workability in performing the maintenance of the box was poor.

Further, in the conventional foreign matter collecting apparatus, every time foreign matter in the box is collected, the box must be pulled out of the central chute 35 and the foreign matter must be taken out of the box. Was also inefficient.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and to provide a foreign substance collecting device of a continuous unloader capable of improving maintainability and improving the efficiency of collecting foreign substances.

[0011]

In order to achieve the above object, the present invention is directed to a continuous unloader for discriminating and collecting foreign matter contained in loose materials such as coal conveyed by a continuous unloader. In the foreign matter collecting device, a foreign matter collecting screen for selectively capturing foreign matter in the loose matter is provided detachably and inclined with respect to the horizontal direction in the middle of the falling path of the loose matter, and an inclined base continuous below the screen. And a foreign substance collection box is provided below the inclined table,
A foreign matter collection device for a continuous unloader, characterized in that foreign matter captured by the foreign matter collection screen is slid off from the inclined table to a collection box as it is.

According to a second aspect of the present invention, there is provided the continuous unloader according to the first aspect, wherein the foreign substance collection box is provided on a trolley, and the trolley can reciprocate between a position below the inclined table and a predetermined dispensing position. It is a foreign substance collection device.

[0013]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

Since the basic structure of the continuous unloader according to this embodiment is the same as that of the continuous unloader 21 shown in FIG. 4, the same components are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 1, the foreign matter collecting apparatus 1 according to the present embodiment includes a central chute 35 shown in FIG.
Inside, there is provided a foreign matter collecting screen 2 for selectively capturing foreign matter in loose objects, and FIG. 1 is a front view showing the foreign matter collecting apparatus 1. FIG. 2 is a plan view of the foreign substance collecting device 1, and FIG. 3 is a front sectional view of the foreign substance collecting screen 2 taken along line AA in FIG.

As shown in FIGS. 1 and 2, the foreign matter collecting device 1 includes a foreign matter collecting screen 2 which is located in the middle of a falling path of loose objects dropped from the boom conveyor 36 and selectively captures foreign matter. It has a rotating means 3 for rotating the foreign substance collecting screen 2, an inclined table 4 continuous below the foreign substance collecting screen 2, and a collecting box 5 located below the inclined table 4. I have.

[0017] Foreign matter collection screen 2 in the present embodiment
Is formed in a lattice shape, and captures only the foreign matter contained in loose objects passing through the foreign matter collection screen 2 on its upper part.

As is clear from FIG. 1, the foreign matter collecting screen 2 is provided in the central chute 35 at a predetermined angle θ with respect to the horizontal direction. That is, the foreign matter collection screen 2 has one end side (the right end in FIG. 1) of the central chute 35 via the rotating shaft 7.
And the other end (left end in FIG. 1) is placed on a pair of fixing pins 9, 9 extending inward from both ends of the central chute 35,
The foreign matter collecting screen 2 is held in the central chute 35, and the fixing pins 9, 9 are arranged above the rotating shaft 7 so that the foreign matter collecting screen 2 is held at an angle θ with respect to the horizontal direction. I have. In the present embodiment, the inclination angle θ of the foreign matter collection screen 2 with respect to the horizontal direction is about 3
0 °.

The rotating shaft 7 is provided on the foreign matter collecting screen 2.
And both ends thereof are rotatably fixed to the central chute 35 via bearings.
The rotating shaft 7 is engaged with the foreign matter collecting screen 2 via an engaging means (not shown).
Relative rotation with respect to and relative movement in the axial direction. Therefore, the fixing of the both ends of the rotating shaft 7 to the central chute 35 is released, and the rotating shaft 7 can be removed from the central chute 35 by moving the rotating shaft 7 in the axial direction. When the rotating shaft 7 is pulled out of the central chute 35, the foreign matter collecting screen 2 is only mounted on the fixing pins 9, 9 and thus is substantially movable, and can be removed from the central chute 35. Become.

Further, as described above, since the rotating shaft 7 is engaged with the foreign matter collecting screen 2 so as not to rotate relatively, when the rotating shaft 7 rotates, the foreign matter collecting screen 2 also rotates together. ing.

As shown in FIGS. 2 and 3, the foreign matter collecting screen 2 is composed of vertical plates 2a which cross each other to form a lattice.
And the horizontal plate 2b. The size of the lattice is such that loose objects such as coal can pass through, but foreign substances larger in size than the loose objects cannot pass through. As is clear from FIG. 3, the vertical plate 2a is positioned substantially perpendicular to the horizontal plate 2b when the foreign substance collecting screen 2 is provided at an angle θ in the central chute 35. It is provided at an angle so as not to obstruct the falling of loose objects.
Further, the fixing pin 9 has a quadrangular cross section, and has a surface 9 a on which the foreign substance collecting screen 2 is placed while being inclined at the same angle as the inclination angle of the foreign substance collecting screen 2. However, the cross-sectional shape of the fixing pin 9 is not limited to a square shape, and may be another shape such as a circular shape.

Returning to FIGS. 1 and 2, the rotating means 3 includes a bracket 1 provided outside the central chute 35.
1 comprises an extendable and retractable cylinder 12 and an arm 13 connected to the cylinder 12. The arm 13 has one end connected to the cylinder 12 and the other end connected to the rotary shaft 7 extending outside the central chute 35. The cylinder 12 is, for example, a hydraulic cylinder, but is not limited.

When the cylinder 12 extends, one end (the left end in FIG. 1) of the arm 13 is lifted upward to rotate the rotating shaft 7 and the foreign matter collecting screen 2 engaged with the rotating shaft 7. The state is shown by a dotted line in FIG. A gap between the rotating shaft 7 extending outside the central chute 35 and the central chute 35 is sealed by a seal member (not shown).

Further, the foreign matter collecting apparatus 1 has an auxiliary screen 14 which is continuously provided at the same angle as the foreign matter collecting screen 2. This auxiliary screen 14
Is fixed to the central chute 35 and guides the foreign matter captured by the foreign matter collecting screen 2 to the inclined table 4.

The foreign substance collecting device 1 includes a foreign substance collecting screen 2
Has an inclined table 4 provided continuously below the table. The inclined table 4 is for sliding the foreign matter captured by the foreign matter collection screen 2 into the foreign matter collection box 5. In the present embodiment, the inclined base 4 is formed from the central chute 35 to the outside, and includes a foreign matter collecting chute 15 inclined at the same angle as the foreign matter collecting screen 2.

The foreign substance collecting box 5 is provided on a carriage 17 which can reciprocate between a position below the foreign substance collecting chute 15 and a predetermined dispensing position 20, and can be lifted and moved by the crane 39 at the dispensing position 20. It has become.

Next, the operation of the present invention will be described.

The loose objects transported by the boom conveyor 36 are dropped onto a central chute 35. At this time, the loose objects hit the plate 19 and fall onto the foreign substance collecting screen 2 in the central chute 35. The loose objects that have fallen onto the foreign matter collection screen 2 pass through the foreign matter collection screen 2 and fall further downward, and are conveyed by the conveyor 3.
Moved to 7 mag. When the loose objects pass through the foreign substance collecting screen 2, the foreign substances contained in the loose objects cannot be passed through the foreign substance collecting screen 2 but are captured on the foreign substance collecting screen 2. The captured foreign matter is collected by the foreign matter collection screen 2 because the foreign matter collection screen 2 is inclined.
It slides down on the upper side (right side in FIG. 1), and further slides down on the auxiliary screen 14 and the foreign matter collecting chute 15 to be collected in the foreign matter collecting box 5. The foreign substance collecting box 5 from which the foreign substances have been collected is moved by the carriage 17 from below the foreign substance collecting chute 15 to a predetermined payout position 20. The foreign substance collection box 5 is lifted and moved by the crane 39 at the payout position 20, and the internal foreign substances are collected at a predetermined location.

Next, a method of removing the foreign substance collecting screen 2 when performing maintenance on the foreign substance collecting screen 2 will be described.

First, the cylinder 12 is driven to extend. When the cylinder 12 extends, one end (the left end in FIG. 1) of the arm 13 is lifted, and the rotating shaft 7 and the foreign matter collecting screen 2 rotate. While the cylinder 12 is extended and the foreign substance collecting screen 2 is rotated by about 90 °, the foreign substance collecting screen 2 is lifted by the crane 39 to support the weight. In this state, the rotating shaft 7 is moved in the axial direction and extracted, and the foreign matter collecting screen 2 is removed.
Free. The crane 39 is raised to move the foreign substance collecting screen 2 to a predetermined maintenance place.

In this embodiment, since the foreign matter collecting screen 2 is removable, its maintenance is easy.

Further, since the foreign matter collection screen 2 is provided at an angle, the foreign matter captured by the foreign matter collection screen 2 slides down to the collection box 5. Therefore, it is not necessary to take out the foreign matter from the central chute 35 to the outside, so that the workability is good and the collection efficiency is good.

In the present embodiment, since the foreign matter collecting screen 2 is fixed by the rotating shaft 7 and the fixing pin 9, the structure is simpler and the cost can be reduced as compared with the conventional one.

The present embodiment is shown as an example of the present invention, and various modifications are conceivable. For example, the inclination angle of the foreign substance collecting screen 2 may be larger or smaller. Further, although the vertical plate 2a and the horizontal plate 2b forming the foreign matter collection screen 2 are shown to intersect perpendicularly to each other, the present invention is not limited in this respect, and may intersect obliquely. . Further, in the present embodiment, the foreign matter collection device 1 is provided in the central chute 35,
May be provided in another place such as a falling path when the loose object 34 scraped by the above is transferred to the boom conveyor 36.

[0035]

In summary, according to the present invention, the following excellent effects can be obtained.

(1) The maintainability of the foreign matter collection screen is improved.

(2) The efficiency of collecting foreign substances is increased.

(3) The structure is simple.

[Brief description of the drawings]

FIG. 1 is a front view of a foreign matter collection device according to an embodiment of the present invention.

FIG. 2 is a plan view of the foreign matter collecting device according to the embodiment of the present invention.

FIG. 3 is a front cross-sectional view taken along line AA of FIG. 2 of the foreign matter collection screen according to the embodiment of the present invention.

FIG. 4 is a schematic diagram of a continuous unloader.

[Explanation of symbols]

 2 Foreign matter collection screen 4 Inclined platform 5 Collection box 17 cart

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65G 65/06 B65G 65/06 67/60 67/60 D

Claims (2)

[Claims] 1. A foreign matter collection device for a continuous unloader for determining and collecting foreign matter contained in bulk material such as coal conveyed by a continuous unloader, wherein a foreign material in the bulk material falls along a falling path of the bulk material. A foreign matter collection screen for selectively capturing is provided detachably and inclined with respect to the horizontal direction, and a continuous inclined table is provided below the foreign matter collection screen, and a foreign matter collection box is provided below the inclined table.
A foreign matter collecting device for a continuous unloader, wherein foreign matter captured by the foreign matter collecting screen is slid off from the inclined table to a collecting box as it is. 2. The foreign matter collection device for a continuous unloader according to claim 1, wherein the foreign matter collection box is provided on a trolley, and the trolley can reciprocate between a position below the inclined table and a predetermined payout position.