JP2002284326A - Apron conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress entering of an object to be carried into a gap of an overlap part of bottom plates of aprons in an apron conveyor. SOLUTION: By providing projecting lines 11 which extend in the width directions of the aprons 5 adjacently to the overlap part and are formed higher than the gap 10 of the upper and lower sides of the overlap part on an upper surface of the bottom plate 3 overlapped on a lower side in the overlap part of the bottom plates 3 of the aprons 5, the object to be carried is made difficult to enter the gap 10 by closing the opening of the gap 10 by the projecting lines 11, engagement of the object to be carried is prevented in the overlap part of the relatively inclined bottom plates 3 and thereby the apron conveyor can be smoothly operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apron conveyor for transporting loose articles.

[0002]

2. Description of the Related Art As shown in FIG. 6, for example, a plurality of apron conveyors used for conveying loose conveyed objects such as municipal solid waste, building waste, ore, etc. are wound around a sprocket wheel 51 and move around. In the endless chain 52 of the strip,
An apron 55 in which side plates 54 are provided at both ends in the width direction of a bottom plate 53 on which a conveyed object is placed is attached in a back-and-forth direction. Some aprons 55 do not have the side plate 54.
The transport path of this apron conveyor is composed of a horizontal portion on the supply end side and an inclined portion on the discharge end side, and a concave bent region 56 is formed between the horizontal portion and the inclined portion.

As shown in FIG. 7, a bottom plate 53 of each apron 55 has a curved portion 53 having a predetermined curvature at its front and rear ends.
a, 53b, and these curved portions 53a, 53b
Is a curved portion 53 of a bottom plate 53 of an apron 55 connected in front and back.
b, 53a with a predetermined gap 57 therebetween.

[0004] The overlapping portion having the gap 57 is a curved portion of the endless chain 52 in the winding region of the sprocket wheel 51 or the bent region 56 of the conveying path, and the aprons 55 connected in front and rear are along the curved portion. It is intended to be able to move smoothly. That is, the bottom plates 53 that overlap with each other with the gap 57 opened between the curved portions 53a and 53b are relatively tilted, so that the connected aprons 55 move along the curved portion of the endless chain 52.

[0005]

In the above-mentioned conventional apron conveyor, a gap is provided at the overlapping portion of the bottom plates of the aprons connected in front and rear, so that a loose conveyed article enters into the gap. If the amount of intrusion of conveyed products into this gap is large, these conveyed products may be formed in the curved part of the endless chain such as the sprocket wheel winding area or the bent area of the conveying path.
There is a case where the apron conveyor is caught between the curved portions of the bottom plate that tilt relatively, which hinders the smooth operation of the apron conveyor.

SUMMARY OF THE INVENTION It is an object of the present invention to suppress the intrusion of a conveyed product into a gap between overlapping portions of apron bottom plates in an apron conveyor.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a plurality of endless chains that are wound around a sprocket wheel and move around, and a plurality of aprons are moved back and forth along the conveying direction. In the apron conveyor for transporting the conveyed material supplied on each apron, an overlapping portion is provided between the bottom plates of the aprons connected in front and rear of the apron, and a gap is provided between the bottom plates of the aprons. A protruding ridge is provided on the upper surface of the bottom plate of the apron that overlaps with the upper portion and extends in the width direction of the apron near the overlapping portion and is formed higher than the upper and lower gaps of the overlapping portion.

That is, a ridge is provided on the upper surface of the bottom plate which overlaps with the lower portion of the bottom portion of the apron and extends in the width direction of the apron close to the overlap portion and is formed higher than the upper and lower gaps of the overlap portion. As a result, the opening of the gap is closed by this ridge, so that the conveyed material is hard to enter the gap.

[0009] By forming a flank on the upper part of the ridge so as to face the overlapping portion and escape upward,
The lump-shaped conveyed material sandwiched between the upper bottom plate and the ridge which is relatively inclined at the curved portion of the endless chain is released upward, so that the conveyed material can be made harder to enter the gap.

Each of the apron conveyors described above may be provided with an upward side plate at both ends in the width direction of the bottom plate of each apron.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the apron conveyor has a plurality of endless chains 2 that are wound around a sprocket wheel 1 and move around. Are attached in front and back. In addition,
The transport path of the apron conveyor includes a horizontal portion on the supply end side and an inclined portion on the discharge end side, and a concave bent region 6 is formed between the horizontal portion and the inclined portion.

As shown in FIGS. 2 to 4, two endless chains 2 are provided in a pair on the left and right sides. Each endless chain 2 uses a flanged roller 8 to link a link composed of an inner link member 7a and an outer link member 7b. These rollers 8, which are connected and freely rotatable, run on rails 9 provided along the conveying path of the apron conveyor. In addition, each apron 5 has a bottom plate 3 attached to inner link members 7a of a pair of left and right links.

At the front and rear ends of the bottom plate 3 of each apron 5, curved portions 3a and 3b having a predetermined curvature are formed, and the curved portion 3a at the front end side is curved at the rear end side of the bottom plate 3 of the apron 5 connected to the front. On the upper side of 3b, it overlaps with a predetermined gap 10. A projection 11 extending in the width direction of the apron 5 is provided on the upper surface on the rear end side of the bottom plate 3 overlapping the lower side at the overlapping portion, in the vicinity of the overlapping portion.

As will be described later, the ridges 11 are for suppressing the entry of the conveyed material into the gap 10, and the height thereof is set to a linear portion of the endless chain 2 as shown in FIG. In the straight portion of the transport path, the gap is formed to be higher than the dimension of the gap 10. Specifically, ridge 11
Is preferably approximately the same height as the upper surface of the curved portion 3a. It is useless to make the ridge 11 too high.
As a guide, the maximum height is set so as to protrude from the upper surface of the curved portion 3 a by the size of the gap 10. In addition, a flank 11a that escapes upward is formed on an upper portion of the ridge 11 on the side facing the overlapping portion.

The left and right side plates 4 of each apron 5
Are provided with a slight inclination angle of inward narrowing toward the transporting direction of the apron conveyor so as not to interfere with each side plate 4 of the apron 5 which is connected in front and rear.

FIGS. 5 (a) and 5 (b) show the bottom plate 3 of the apron 5 connected in front and rear at the curved portion of the endless chain 2. FIG.
The state of the relative tilt between the two is shown. FIG. 5 (a) shows the winding area of the sprocket wheel 1 in which the curved part is convex, and the curved parts 3a, 3b of each bottom plate 3 have the center of curvature of the curved part, that is, the sprocket wheel generally. 1
Relative to the center of rotation so as to reduce the overlap margin. Therefore, the distance between the ridge 11 and the opening of the gap 10 is slightly increased, so that it is not possible to completely prevent the conveyed material from entering the gap 10, but the amount of entry is considerably reduced. Note that this relative tilt returns to the state of the straight portion of the endless chain 2 shown in FIG. 3 on the exit side of the winding region of the sprocket wheel 1.

FIG. 5B shows a bent area 6 of the conveyance path in which the curved portion is concave. In this case, the bending portions 3a, 3
Each bottom plate 3 is relatively tilted so that the overlap margin of b increases, and the ridge 11 approaches the opening of the gap 10 and substantially closes the opening. Further, the conveyed material sandwiched between the ridge 11 and the end face of the upper bottom plate 3 is released upward by the flank 11a of the ridge 11, so that the intrusion of the conveyed material into the gap 10 is almost completely suppressed.

In the above-described embodiment, the curved portion on the front end side of the rear bottom plate is overlapped on the upper side of the curved portion on the rear end side of the front bottom plate. It may be superposed on the upper side of the curved portion on the front end side of the bottom plate. In this case, the projection is provided on the upper surface on the front end side of the bottom plate.

Further, in this embodiment, each protrusion is provided on the flat portion near the boundary with the curved portion of the bottom plate, but may be provided on the curved portion. In other words, in order to suppress the intrusion of the conveyed material into the gap between the bottom plates, it is better to provide the protrusion near the overlapping portion of the bottom plate, and it is preferable to provide the protrusion on the curved portion as long as it does not interfere with the overlapping portion. it can. Furthermore, the projecting cross-sectional shape is not limited to that of the embodiment,
It can be arbitrarily designed including the cross-sectional shape of the flank.

[0020]

As described above, the apron conveyor according to the present invention extends on the upper surface of the bottom plate overlapping the lower portion at the overlapping portion of the bottom plate of the apron and extends in the width direction of the apron in the vicinity of the overlapping portion. A ridge formed higher than the gap is provided, and this ridge closes the opening of the gap, making it difficult for the conveyed material to enter the gap, thereby preventing the conveyed product from being caught in the overlapping portion of the bottom plate that tilts relatively. , The apron conveyor can be operated smoothly.

Also, a flank is formed on the upper part of the ridge so as to face the overlapping part and escape upward, so that the upper bottom plate which is relatively inclined at the curved part of the endless chain and the lumps sandwiched between the ridges. This allows the transported object to escape upward, making it more difficult for the transported object to enter the gap.

[Brief description of the drawings]

FIG. 1 is a partially omitted front view showing an embodiment of an apron conveyor.

FIG. 2 is an enlarged plan view of a main part of FIG. 1;

FIG. 3 is a partially cutaway front view of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

5A and 5B are front cross-sectional views each showing a relative tilting state of the apron bottom plate of FIG. 3;

FIG. 6 is a partially omitted front view showing a conventional apron conveyor.

FIG. 7 is a partially cutaway front view showing an enlarged main part of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sprocket wheel 2 Endless chain 3 Bottom plate 3a, 3b Curved part 4 Side plate 5 Apron 6 Bending area 7a, 7b Link material 8 Roller 9 Rail 10 Clearance 11 Protrusion 11a Relief surface

Claims (3)

[Claims] 1. A plurality of aprons are attached to a plurality of endless chains that are wound around a sprocket wheel and move around in a row along the transport direction, and between the bottom plates of the aprons connected to the front and rear, In the apron conveyor for providing a conveyed portion supplied on each apron with an overlap portion with a gap provided vertically, on the upper surface of the bottom plate of the apron that overlaps the lower portion in the overlap portion, the apron is located close to the overlap portion. An apron conveyor provided with a ridge extending in the width direction and formed higher than the upper and lower gaps of the overlapping portion. 2. The apron conveyor according to claim 1, wherein a flank is formed on an upper portion of the ridge so as to face the overlapping portion and escape upward. 3. At both ends in the width direction of the bottom plate of each apron,
The apron conveyor according to claim 1 or 2, further comprising an upward side plate.