JP2813082B2 - Pipe conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe conveyor and, more particularly, to an improvement in a structure of a corner portion which is bent in a pipeline path.

[0002]

2. Description of the Related Art Conventionally, there has been known a pipe conveyor having a built-in circulating conveying means in which blades or buckets are connected at equal intervals to a short link chain, a roller chain, a wire rope, or the like. This pipe conveyor circulates and drives the above-mentioned conveying means to various solid substances (for example, wood or metal chips, earth and sand, mineral raw materials, metallic substances, paper products, plastics, fish and shellfish, snow, garbage, etc. ) And other granular materials. FIG. 5 shows an example of a conventional link chain type pipe conveyor, in which a straight pipe 1 and an elbow pipe (or bend pipe) 2 bent in a substantially L shape or a U shape meandering. Pipeline path is formed. At an appropriate point in the pipeline route, a hopper 3 serving as an inlet for one or more objects to be conveyed is provided, and at an appropriate turning point,
A discharge unit 4 for discarding or carrying out the transported object is provided. An endless chain 5 is built in the link chain type pipe conveyor as shown in FIG.
0, and is wrapped around a driving wheel 9 driven by a motor M, and is stretched and circulated in the pipeline so as to connect the shortest distance thereof. Here, in the link chain type pipe conveyor, the direction in which the endless chain 5 is folded back by the drive wheels 9 is not particularly limited, and may be a vertical direction (illustrated example) or a horizontal direction. Also,
The pipeline may be laid out one-way without folding. As shown in FIG. 7, the endless chain 5 is formed by connecting a large number of oval links 6 at right angles to each other. Blades 7 having a circular outer periphery are fixed at appropriate intervals and covered by the blades 7. The transported object A is transported. Accordingly, the endless chain 5 circulates while always in contact with the inner wall surface of the inner corner of each corner of the pipeline, and the blade 7 abuts against the inner wall surface and turns while twisting the endless chain 5, thereby turning the corner of the pipeline. , The blade 7 turns and returns in the opposite direction due to the repulsive force of the twist of the endless chain, and circulates through the pipeline to discharge the transported object A while repeating such turning. Therefore, in such a link chain type pipe conveyor, the inner wall surface at the corner of the elbow pipe 2 is strongly rubbed by the circulation of the endless chain 5 and the rotation caused by the twisting and returning of the blade 7 due to the rotation, and is easily worn. was there. Therefore, conventionally, as shown in FIG. 8, the surface of an elbow pipe 2 arranged at a corner of this pipeline is heat-treated to improve wear resistance, or as shown in FIG. The service life is extended by welding the reinforcing plate 10 to the inner corner of the elbow tube 2 to increase the wall thickness. However, in the heat treatment,
The service life is not significantly extended compared to the time and cost required for the repair or replacement. Further, in the configuration in which the reinforcing plate 10 is welded to the inner corner of the elbow tube 2, the life is extended by the increased thickness, but high carbon and high hardness steel is used as a material. For this reason, it is necessary to remove the welded portion and replace the reinforcing plate, but these replacement operations for the pipeline once installed are very difficult and time-consuming. In addition, the elbow or bend
Due to sliding friction with a chain or the like passing through the inside, the resistance was large and it was not suitable for long-distance conveyance. Such a problem is not limited to the link chain type pipe conveyor having the above-described configuration. In the case of a structure in which corners are strongly rubbed, this is a common disadvantage, and a solution is expected in this type of technical field.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its main object the problem of abrasion or damage to the corners of a pipeline of a pipe conveyor utilizing rolling friction using rollers. It is an object of the present invention to provide a corner structure of a pipe conveyor capable of reducing the length of a pipe and enabling long-distance conveyance.

[0004]

In order to solve the above-mentioned problems, the present invention provides a means for rotatably providing a drum-shaped corner roller having an arcuate concave surface whose peripheral surface matches the inner diameter of a pipeline at a corner portion. Taken. That is, the present invention relates to a pipe conveyor having a built-in conveying means for circulating and driving in a pipeline including a corner portion. The peripheral wall surface of the corner roller is set to have substantially the same curvature as the inner wall surface of the pipe, and the peripheral wall surface is substantially continuous with the inner wall surface of the pipe. The technical means that it is arranged in the position where it does. Inside a reversing corner portion which is connected to a pair of pipelines serving as an outward route and a return route and inverts the conveying means by 180 degrees,
A corner roller rotatable in the conveying direction of the conveying means to be inverted is pivotally supported, and the peripheral wall surface of the corner roller is set to have substantially the same curvature as the inner wall surface of the pipe, and the peripheral wall surface is formed with the inner wall surface of the pipe. It is arranged in a substantially continuous position,
It has taken the technical measures.

[0005]

[Function] Endless chains and blades connected to them come into contact with the corner rollers at the corners, but at this time the corner rollers rotate, so the friction with the transport means such as chains becomes rolling friction and is reduced. Is done. As a result, the resistance of the entire circulating conveyance line is reduced, so that long-distance conveyance is possible.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the pipe conveyor of the present invention will be described below with reference to the drawings. FIG. 1 shows the structure of a corner portion (distorted portion) of a pipe conveyor according to the present invention, in which the inside of a corner portion inner wall 11 corresponding to the elbow pipe 2 bent in a substantially L shape is bent. A mounting case portion 13 that expands outward is provided so that the portion 12 is open and covers the portion 12.
Inside 3, a drum-shaped corner roller 14 is provided rotatably about the axis.

More specifically, the mounting case 13 has a rectangular tubular mounting portion 15 projecting outward so as to cover the opening of the inner bent portion 12, and the mounting portion 1.
5 and a cap portion 16 covering the outer opening. A mounting plate (not shown) is provided along the outer opening edge of the mounting portion 15 and abuts against a flange (not shown) of the cap portion 16 to fix the cap portion 16 with bolts or the like. I am getting it.

The mounting portion 15 and the cap portion 16
A bearing 17 is fixed to the abutting portion, and both ends of a shaft 18 provided so as to penetrate the axis of the corner roller 14 are rotatably supported by the bearing 17. In addition, the drum-shaped corner roller 14 is
Since 4a has an arc-shaped concave surface that matches the inner diameter of the pipeline of the pipeline, the inner diameter of the pipeline is maintained as it is at the corner where the corner roller 14 is attached.

It is to be noted that one or a plurality of the corner rollers can be arranged in parallel as shown in FIG. 2 or according to the radius of curvature of the corner portion. At this time, the pipe wall
An opening is formed at a position matching the peripheral surface of the corner roller, so that the peripheral surface of the corner roller can form a part of the inner peripheral surface of the pipe.

The corner roller 24 shown in FIGS.
Indicates a case where the corner is provided at a point where the corner is inverted by 180 degrees. The reversing corner portion 20 is formed of a box-shaped casing, and the forward path 1a and the backward path 1b are connected. A corner roller 24 is rotatably supported in the reversing corner portion 20 so as to be rotatable in the conveying direction of the endless chain 5. In this case, the direction of the endless chain 5 can be directly changed by the corner roller without using the curved inner peripheral surface of the conventional bend pipe.

The corner structure of the pipe conveyor according to the present invention can be applied to all kinds of pipe conveyors having a built-in circulating conveying means using a conventional short link chain, roller chain, wire rope or the like.

[0012]

According to the present invention, a rotatable drum-shaped corner roller is provided at a corner portion, and the friction with a conveying means such as a chain at this corner portion is changed from the conventional sliding friction to rolling friction. Therefore, friction with endless chains, wires, and the like at corners is reduced, smooth circulation is achieved, and the inside diameter of the bent portion of the pipeline can be secured. In addition, this reduces the resistance of the entire circulating conveyance line, enabling long-distance conveyance, increasing the chain speed, and greatly increasing the conveyance amount compared to the conventional sliding friction type. Becomes

[Brief description of the drawings]

FIG. 1 is a sectional view showing a corner portion of a pipe conveyor of the present invention.

FIG. 2 is a plan view showing an example in which a plurality of drum-shaped corner rollers according to the present invention are arranged in parallel.

FIG. 3 is a cross-sectional view when a corner roller is incorporated in a folded portion.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a perspective view showing an example of a conventional link chain type pipe conveyor.

FIG. 6 is a sectional view showing a corner portion of a conventional link chain type pipe conveyor.

FIG. 7 is a partially cutaway view showing the inside of a pipe of a link chain type pipe conveyor.

FIG. 8 is a cross-sectional view illustrating a state of a conventional elbow tube.

FIG. 9 is a cross-sectional view illustrating a state of a conventional elbow tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Straight pipe 2 Elbow pipe 3 Hopper 4 Discharge part 5 Endless chain 7 Blade 9 Drive wheel 10 Reinforcement plate 11 Corner inner wall 12 Inside bent part 13 Mounting case part 14 Drum-shaped corner roller 15 Mounting part 16 Cap part 17 Bearing 18 shaft

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akitaka Kimura 3700 Tana, Sagamihara City, Kanagawa Prefecture Inside C.M.General Service Co., Ltd. (72) Inventor Hiroo Inoue 1-3-2 Kita-Aoyama, Minato-ku, Tokyo Inside Mitsubishi Corporation (56) References JP-B-41-16652 (JP, B1) JP-B-58-42322 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65G 19 / 14 B65G 19/28

Claims (3)

(57) [Claims] 1. A pipe conveyor having built-in transport means for circulating and driving in a pipeline including a corner portion, wherein a corner roller rotatable in the transport direction is provided at the corner portion in a direction in which a rotation axis thereof is orthogonal to the transport direction. So that the peripheral wall surface of the corner roller is set to have substantially the same curvature as the inner wall surface of the pipe, and the peripheral wall surface is substantially continuous with the inner wall surface of the pipe. A pipe conveyor characterized by being arranged at a position. 2. In the inner part of the corner on the inner wall of the pipe,
A pipe provided with a mounting case portion protruding outside the pipe, and a plurality of drum-shaped corner rollers provided in the mounting case portion along the transport direction while securing the inner diameter of the pipe at the corner portion; Conveyor. 3. A reversing corner section which is connected to a pair of outward and return pipelines and inverts the transport means by 180 degrees in a pipe conveyor having a built-in transport means for circulating and driving in a pipeline including a corner portion. Inside, a corner roller rotatable in the transport direction of the inverted transport means is pivotally supported. The peripheral wall surface of the corner roller is set to have substantially the same curvature as the inner wall surface of the pipe, and the peripheral wall surface is A pipe conveyor, wherein the pipe conveyor is arranged at a position substantially continuous with an inner wall surface of the pipe.