JP2000198519A - Double belt conveyer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it hard for cargoes to fall from a steep gradient section and curved section by making it hard for belts to produce gaps between two belt at even a place where there is no pressing roller and for belts to move in a zigzag direction. SOLUTION: Two endless flat belts 1 and 2 are suspended around pulleys independent of each other, and the intermediate sections of the flat belt adjacent to each other in the longitudinal direction are overlapped to each other, and a cargo 5 is held between them, and the two belt overlapped to each other by a guide roller is guided along a specified path, and the ends of the two belts are held to convey the cargo 5. The flat belts 1 and 2 have projections 1a and 2a and recessed grooves 1b and 2b extending in the longitudinal direction and arranged adjacent to each other at both end sections in the width direction of the side (outside) where the cargo 5 is held. The projection of one of the two flat belts is fitted to the recessed groove of the other belt, restraining the production of gaps in the end section at a place where there is no pressing roller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-belt conveyor for holding a load between two flat belts and transporting a steep or curved portion.

[0002]

2. Description of the Related Art In order to convey a load such as earth and sand excavated by a tunnel excavation device along a tunnel having a curved portion, a "conveyor device" (Japanese Patent Application No. 9-274414) was developed by the inventors of the present invention. Proposed. In this apparatus, as illustrated in FIG. 5, the two flat belts 1 and 2 are independently and endlessly bridged between pulleys 3a, 3b, 4a and 4b, and the flat belts 1 and 2 in the middle are mutually connected. Superimpose, sandwich the load 5 such as earth and sand between them,
The load is conveyed by guiding the flat belts along a steep slope or a curved portion. In this case, the ends of the flat belts 1 and 2 are sandwiched by the pressing rollers 7 so that the ends of the flat belts 1 and 2 are opened at a steep slope or a curved portion so that the load does not spill.

[0003]

As described above, conventionally, the roller 7 is pressed against the outer ends of the two flat belts 1 and 2 from the outside, and the pressing force sandwiches the belt 1 and the belt 2. . However, even if the two belts are sandwiched between the rollers 7, there is a problem that, in a portion where the rollers 7 are not provided, a gap is formed between the belts 1 and 2 due to the weight of the load or meandering of the belt, and the load spills out of the gap. Was. In particular, the seal structure had no resistance to meandering of the belt.

The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a double belt conveyor device in which a gap is hardly formed between two belts and a belt is not easily meandered even in a place where a pressing roller is not provided, thereby reducing a load drop on a steep slope or a curved portion. Is to do.

[0005]

According to the present invention, two flat belts (1, 2) are independently driven by pulleys (3a, 3a).
b, 4a, 4b) endlessly, and the longitudinal intermediate portions of the adjacent flat belts overlap each other,
In the meantime, the load (5) is sandwiched, and the two flat belts overlapped by the guide roller (6) are guided along a predetermined path, and the ends of the two flat belts are pressed by the pressing roller (7). A double-belt conveyor device for nipping and transporting a load, wherein the flat belts (1, 2) are respectively provided with protrusions (1) extending in the length direction at both ends in the width direction of the side for holding the load (5).
a, 2a) and a concave groove (1b, 2b), wherein one protrusion of two flat belts is fitted into the other concave groove.

According to the configuration of the present invention, the flat belts (1, 2) are provided with the protrusions (1a, 2a) and the concave grooves extending in the length direction at both ends in the width direction on the side for holding the load (5). (1b, 2b), and one protrusion of the two flat belts is fitted into the other groove, so that the pressing roller sandwiches the ends of the two flat belts (1, 2). (7) Even when the width direction ends slightly open due to the weight of the load in the portion where there is no (7), the projections (1a, 2a) and the concave grooves (1b, 2b) are fitted to each other. Until the engagement between the belt and the concave groove is released, a gap is not formed at both ends of the belt (1, 2), and the load can be prevented from being spilled.

According to a preferred embodiment of the present invention, the projections (1a, 2a) of the two flat belts (1, 2) are arranged adjacent to each other. With this configuration, until the distal ends of the adjacent protrusions (1a, 2a) come off, that is,
The formation of a gap at the belt end can be prevented up to approximately twice the height of the protrusion.

Further, it is preferable that an end guide roller (8) for guiding at least one widthwise end face of the two flat belts (1, 2) is provided. With this configuration, when the belt starts to meander, the meandering amount can be suppressed by the end face guide roller (8). In particular, the guide roller and the projection (1a, 2a)
And the concave grooves (1b, 2b) are fitted to each other, so that one belt is prevented from meandering, and the other belt is restrained from being caught by the protrusion and the concave groove, thereby reducing meandering and providing an end due to meandering. The opening of the part can be prevented, and the spill can be prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In each of the drawings, the same reference numerals are used for common parts, and redundant description will be omitted.

FIG. 1 is an overall configuration diagram of a double belt conveyor device according to the present invention. The double belt conveyor device shown in this figure is a steep belt conveyor that sandwiches and transports a load between two flat belts. As shown in FIG. 1, the double belt conveyor of the present invention
It has two flat belts 1 and 2. The flat belt 1 has a pulley 3
a, 3b and endlessly,
It rotates endlessly between a and 3b. In addition, flat belt 2
Is endlessly stretched between the pulleys 4a and 4b, and similarly rotates endlessly between the pulleys 4a and 4b.

Further, an intermediate portion in the longitudinal direction of the two flat belts 1 and 2 adjacent to each other, that is, the lower side of the flat belt 1 and the upper side of the flat belt 2 in FIG. I have. The overlapping portions of the two flat belts 1 and 2 move at the same speed, and a load 5 (for example, earth and sand) is nipped and conveyed therebetween.

Further, the two flat belts 1 and 2 superposed by the guide roller 6 are guided along a predetermined path (for example, a steep slope or a curved portion), and the two flat belts 1 and 2 are pressed by the pressing roller 7. , 2 between the flat belts 1, 2,
Are held in close contact with each other to prevent a gap from being formed at the end. In place where the two flat belts 1 and 2 are guided, a pressing roller 7 is used instead of the guide roller 6.
May guide two flat belts. Further, in this figure, the two flat pressing rollers 7 press the flat belts 1 and 2 at the same position, but the upper and lower pressing rollers 7 may be arranged alternately.

FIG. 2 is a sectional view taken along line AA of FIG. As shown in this figure, at the place where the two flat belts 1 and 2 are guided, in addition to the above-described pressing roller 7, an end face that guides at least one widthwise end face of the two flat belts 1 and 2. A guide roller 8 is provided. The end surface guide roller 8 is arranged with a slight gap from the width direction end surfaces of the two flat belts 1 and 2 and freely rotates about an axis parallel to the belt end surfaces (the vertical direction in the figure). It has become. The end guide roller 8 is preferably arranged between the adjacent pressing rollers 7 so as not to interfere with the pressing roller 7. The guide roller 6, the pressing roller 7, and the end surface guide roller 8 are preferably cylindrical rollers as shown in the figure, but may have other shapes if necessary.

FIG. 3 is an enlarged view of a portion B in FIG. As shown in this figure, the flat belts 1 and 2 have protrusions 1a and 2a extending in the length direction (moving direction of the belt) and concave grooves 1b and 1b at both ends in the width direction on the side (outside) where the load 5 is held. 2b. In this example, the projections 1a and 2a are provided one at each end, and two concave grooves 1b and 2b are provided. Further, in this example, the projections 1 of the two flat belts 1 and 2
a and 2a are arranged adjacent to each other, and one of the projections 1a and 2a of the two flat belts is fitted into the other groove 1b and 2b, and the flat portions without the projection and the groove are in close contact with each other. Has become.

FIG. 4 is an enlarged view of a portion B in use. A gap is formed between the flat portions of the belts 1 and 2 due to the weight of the load and the meandering of the belts. This shows a state in which the protrusions 1a and 2a are displaced in the lateral direction (the left direction in this figure) and are in contact with each other near the distal end.

According to the configuration of the present invention described above, the flat belts 1 and 2 have the projections 1a and 2a and the grooves 1b and 2b extending in the length direction at both ends in the width direction on the side where the load 5 is held. In addition, since one protrusion of the two flat belts is fitted in the other groove, the weight of the load is reduced in a portion where the pressing rollers 7 for nipping the ends of the two flat belts 1 and 2 are not provided. Even if the end in the width direction is slightly opened due to, for example, as shown in FIGS. 3 and 4,
Since the projections 1a, 2a and the concave grooves 1b, 2b are fitted to each other, there is no gap at both ends of the belts 1, 2 until the protrusions and the concave grooves are disengaged, so that the load spill can be prevented. .

In particular, since the projections 1a and 2a of the two flat belts 1 and 2 are arranged adjacent to each other, FIG.
As shown in (1), it is possible to prevent the formation of a gap at the belt end until the tips of the adjacent projections 1a and 2a come off from each other, that is, up to almost twice the height of the projections.

Further, since end belt guide rollers 8 for guiding at least one end face in the width direction of the flat belts 1 and 2 are provided, when the belt starts to meander, the amount of meandering can be suppressed by the end guide rollers 8, particularly Due to the fitting of the guide roller 8, the projections 1a, 2a, and the concave grooves 1b, 2b, one belt (for example, the belt 1 in FIG. 4) tries to meander, while the other belt (the belt 2 in FIG. 4). Is suppressed by the protrusion 2a and the concave groove 1b being caught, the meandering can be reduced, the end portion can be prevented from opening due to the meandering, and the load can be prevented from being spilled.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. For example, in the above description, the steep conveyor is described in detail, but the present invention can be similarly applied to a curved portion.

[0020]

As described above, in the double belt conveyor device of the present invention, it is difficult for a gap to be formed between two belts and for the belt to meander even in a place where there is no pressing roller.
This has excellent effects such as less spillage on steep slopes and curved portions.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a double belt conveyor device according to the present invention.

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

FIG. 3 is an enlarged view of a portion B in FIG. 2;

FIG. 4 is an enlarged view of a portion B during use.

FIG. 5 is an explanatory diagram of a prior art by the inventors of the present invention.

[Explanation of symbols]

 1, 2 flat belt 1a, 2a protrusion 1b, 2b concave groove 3a, 3b, 4a, 4b pulley 5 load 6 guide roller 7 pressing roller 8 end guide roller

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Tsuchiya 6-4 Akashicho, Chuo-ku, Tokyo Inside Ishikawajima Transport Machinery Co., Ltd. (72) Inventor Hiroaki Shinomiya 6-4 Akashicho, Chuo-ku, Tokyo Ishikawajima Transport Machinery F term in reference (reference) 3F023 AA01 AB02 BA02 BA09 BB06 BC03 EA05 3F024 DA07

Claims (3)

[Claims] 1. Two flat belts (1, 2) are independently and endlessly bridged between pulleys (3a, 3b, 4a, 4b), and the longitudinal intermediate portions of the adjacent flat belts are overlapped with each other. The two flat belts overlapped by a guide roller (6) are guided along a predetermined path, and the ends of the two flat belts are guided by a pressing roller (7). A flat belt (1, 2) that protrudes in the length direction at both ends in the width direction on the side that holds the load (5). 1a, 2
a) and a concave groove (1b, 2b), wherein one of the two flat belts is fitted into the other concave groove. 2. The projection (1) of two flat belts (1, 2).
2. The double belt conveyor according to claim 1, wherein a, 2a) are arranged adjacent to each other. 3. The double belt conveyor device according to claim 1, further comprising an end surface guide roller (8) for guiding at least one widthwise end surface of the two flat belts (1, 2). .