JPH0648544A - Corner roller for pipe conveyor - Google Patents

Abstract

PURPOSE:To eliminate a sliding caused between a roller and a chain, and secure rotation of a corner roller by arranging projecting parts in places coming into contact with a link chain on the peripheral surface of the corner roller whose curvature is set approximately in the same with the inner peripheral surface of a conveyor corner part. CONSTITUTION:An inside curved part 12 is opened on the corner part inner wall 11 in a part corresponding to an elbow pipe 2 curved in an approximate L shape, and an installing case part 13 enlarged outward is arranged so as to cover this, and a hand drum shape corner roller 14 is arranged in this case part 13 so as to be rotatable freely around the shaft center. The peripheral surface 14a of the roller 14 is formed in an arc shape recessed surface so as to be fitted to an inside diameter of a pipeline. Filament projecting parts 40 extending in a shaft direction are arranged respectively in positions set by dividing the central part outer periphery of the roller 14 by integral times of the pitch of an endless chain 5. Thereby, since the corner roller 14 is formed apparently in a polygon, a slide with the chain 5 can be eliminated, so that the roller 14 can be rotated forcibly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corner roller of a pipe conveyor, and more particularly to a structure which can be reliably rotated by a chain.

[0002]

2. Description of the Related Art Heretofore, there has been known a pipe conveyor having a short link chain and a circulating transfer means in which blades or buckets are connected at equal intervals. This pipe conveyor circulates and drives the above-mentioned transportation means to produce various solid substances (for example, wood or metal chips, earth and sand, mineral raw materials, metallic substances, paper products, plastics, fish and shellfish,
It is used to transport snow, garbage, etc.) and other granular materials. FIG. 9 shows an example of a conventional link chain type pipe conveyor, which is formed in a meandering shape by a combination of a straight pipe 1 and an elbow pipe (or a bend pipe) 2 bent in a substantially L shape or a U shape. The pipeline route of is formed. A hopper 3 serving as an input port for one or more conveyed objects is provided at an appropriate position of this pipeline system path,
In addition, a discharge portion 4 for discarding or carrying out the object to be transported is provided at an appropriate turning point. Then, as shown in FIG. 10, an endless chain 5 is built in the inside of the link chain type pipe conveyor, and a drive wheel 9 provided by a drive casing 10 in which a discharge part 4 is formed and driven by a motor is provided. It is stretched and circulated in the pipeline so as to be stretched so as to connect the shortest distance. Here, in the link chain type pipe conveyor, the folding direction of the endless chain 5 by the drive wheel 9 is not particularly limited, and may be the vertical direction (illustrated example) or the horizontal direction. Further, the pipeline may be laid out in a one-way way without folding back. As shown in FIG. 11, the endless chain 5 is formed by connecting a number of egg-shaped links 6 orthogonal to each other, and blades 7 having circular outer circumferences are fixed at appropriate intervals. The article A is conveyed. Therefore, the endless chain 5 constantly circulates while being in contact with the inner wall surface 2a of the inner corner of each corner of the pipeline, and the blade 7 abuts against the inner wall surface and twists the endless chain 5 to swirl, thereby turning the pipeline corner. When the blade 7 crosses over the portion, the blade 7 turns in the opposite direction by the repulsive force of the twist of the endless chain and returns, and the object A to be conveyed is circulated through the pipeline while repeating such turning. Therefore, in such a link chain type pipe conveyor, the inner wall surface 2a of the corner portion of the elbow pipe 2 is
However, there is a problem that the endless chain 5 is rubbed strongly by the circulation of the endless chain 5 and the rotation by the turning of the blade 7 and the rotation by the return, and is easily worn. Therefore, conventionally, the surface of the elbow pipe 2 arranged at the corner portion of the pipeline is heat treated to improve wear resistance, or the reinforcing plate 10 is welded to the inner corner of the elbow pipe 2 of the pipeline. The service life is being extended by increasing the wall thickness. However, the heat treatment does not extend the service life so much as compared with the time and cost required for repair or replacement. Further, in the structure in which the reinforcing plate 10 is welded to the inner corner of the elbow pipe 2, although the life is extended by the amount corresponding to the increase in the wall thickness, high carbon is used as the material.
Since high hardness steel is used, once it is damaged, it is necessary to remove the welding part and replace the reinforcing plate for repair, but these replacement operations for the pipeline once installed are very difficult. , Took a lot of time. Further, the elbow pipe or the bend pipe has a large resistance due to sliding friction with a chain or the like passing through the elbow pipe or the bend pipe, and is not suitable for long-distance transportation. Therefore, a method of providing a corner roller at these corners and utilizing the rolling friction can be considered, but the roller surface is machined and slippery. Also, due to long-term use, the transported object may adhere around the corner roller, or the roller bearing may deteriorate, causing the corner roller itself to malfunction.
The chain simply slides on the roller surface, which may lead to uneven wear of the corner roller and accidental cutting of the chain. In particular, in a pipeline for long-distance transportation, there is a possibility that a large resistance is generated and eventually the transportation becomes impossible.

[0003]

SUMMARY OF THE INVENTION The present invention was created in view of the above circumstances, and its main object is to eliminate slippage between the corner roller and the chain and force the chain to move the corner. It is to provide a corner roller of a pipe conveyor for rotating a roller to change the direction of a chain.

[0004]

In order to solve the above problems, the present invention provides a corner portion of a pipe conveyor having a link chain for connecting blades or buckets to move in the pipe conveyor. A corner roller provided so as to rotate in the conveying direction, the peripheral surface of the corner roller being set to have substantially the same curvature as the inner peripheral surface of the corner portion, the peripheral surface of the corner roller being in contact with the link chain. The technical measure is to provide a protrusion at each point.

[0005]

In the corner portion of the chain, the corner roller comes into contact with the corner roller. At that time, the chain is caught by the protrusion formed on the peripheral surface of the corner roller. Then, the corner roller can be reliably rotated by the movement of the chain, and the rolling friction of the corner roller can be utilized to change the direction of the chain.

[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 a structure of a corner portion (bending portion) of a pipe conveyor according to the present invention, in which an inner wall of a corner portion inner wall 11 of a portion corresponding to an elbow pipe 2 bent in a substantially L shape is bent. A portion 12 is opened, and a mounting case portion 13 that expands outward is provided so as to cover the portion 12, and the mounting case portion 1 is provided.
3, a drum-shaped corner roller 14 is provided rotatably around an axis.

More specifically, the mounting case portion 13
Is composed of a rectangular tube-shaped mounting portion 15 protruding outwardly so as to cover the opening of the inner bent portion 12, and a cap portion 16 covering the outer opening of the mounting portion 15. . A mounting plate (not shown) is provided along the outer opening edge of the mounting portion 15, and the cap portion 16 is provided.
The cap portion 16 can be fixed to the flange (not shown) by means of bolts or the like.

Further, the mounting portion 15 and the cap portion 16
A bearing 17 is fixed to an abutting portion of the shaft 17 and both ends of a shaft 18 provided so as to penetrate the shaft center of the corner roller 14 are rotatably supported by the bearing 17. The drum-shaped corner roller 14 has a peripheral surface 1
Since 4a has an arcuate concave surface that matches the inside diameter of the pipeline, the inside diameter of the pipeline is secured as it is even at the corner portion where the corner roller 14 is attached.

Incidentally, one or a plurality of the corner rollers can be arranged in parallel depending on the size of the radius of curvature of the corner portion (see FIG. 2). At this time, an opening is formed in the wall surface of the pipe at a position aligned with the peripheral surface of the corner roller, and the peripheral surface of the corner roller can form a part of the inner peripheral surface of the pipe.

FIGS. 3 and 4 show a mounting case portion that expands outward at an inner bent portion 12 of a corner inner wall 11 of a portion corresponding to the elbow pipe 2a bent horizontally in a substantially L shape. 23 is provided, and the corner roller 24 has a different shape in which the axial center is inclined in the mounting case portion 23.

That is, the mounting case portion 23 has a rectangular tubular mounting portion 25 projecting outward and a mounting portion 2
5 and a cap portion 26 for covering the outer opening portion of 5. As shown in FIG. 4, a mounting plate 27 is provided along the outer opening edge of the mounting portion 25, and the mounting plate 27 abuts the flange 26a of the cap portion 26 so that the cap portion 26 is inserted via the bolt 31 or the like. It can be fixed. Figure 4
Inside, 28 is a hole for inserting a bolt.

The bottom surface 25a of the mounting portion 25 is inclined upward so as to be substantially parallel to the bottom surface of the inclined corner roller 24 as described later. Further, a pair of fixing plates 29 are provided so as to project inward from the upper and lower surfaces of the mounting plate 27 so as to face each other, and the shaft 30 is provided at both ends of the pair of fixing plates 29. It is pivoted in a tilted state.

The corner roller 24 is provided with its bottom surface having a large diameter facing down, and the shaft center penetrating the shaft 30. The corner roller 24 is rotatable about the shaft 30 in an inclined state. Since the peripheral surface 24a of the corner roller 24 is a truncated cone having an arcuate concave surface that matches the inner diameter of the pipeline, the pipeline is also used in the horizontal corner portion to which the corner roller 24 is attached. The inner diameter will be secured.

Corner roller 1 arranged as described above
In Nos. 4 and 24, as shown in FIGS. 5 and 6, a protrusion is provided at a portion in contact with the endless chain, and the peripheral surface is formed in an uneven shape in cross section. That is, the corner rollers 14, 2
Reference numeral 4 denotes a linear ridge portion 40 that extends in the axial direction at a position where the outer periphery of the central portion of the corner rollers 14 and 24 (the portion having the smallest diameter) is divided by an integral multiple of the pitch of the endless chain 5.
Is provided.

In the case of this embodiment, the linear protrusion 40 is
The corner rollers 14, 24 are preheated at a predetermined temperature in advance, the corner rollers 14, 24 are opened at appropriate intervals, and the grooves 41 extending in the axial direction are provided with, for example, high carbon steel,
It is obtained by forming a hardened padded beat surface using a welding rod (not shown) made of a high hardness material such as high hardness wear resistant steel or alloy steel.

As a result, as shown in FIG. 7, since the corner rollers 14 and 24 are apparently polygonal,
The corner roller can be forcedly rotated without slipping with the endless chain 5.

In this embodiment, since the linear protrusions 40 are arranged at positions divided by an interval (1 time) equal to the pitch of the chain 5, as shown in FIG. 8, the eggs forming the chain 5 are arranged. The shaped link 6 engages with the linear ridge 40, and the linear ridge 40 is pushed by the drive of the chain to rotate the corner roller.

By the rotation of the corner rollers 14 and 24, the contact with the chain becomes rolling friction.
You can smoothly change the direction of the chain. At this time, resistance is generated between the chain and the linear raised portion 40, but since the rotation of the controller is ensured, there is no problem in the entire drive of the endless chain. In the present embodiment, even if the corner rollers 14 and 24 are made of ordinary steel such as SS steel, the line ridges 40 are hard and hardened, so that abrasion resistance can be achieved and the life of the corner rollers is increased. It is possible to improve and reduce the load on the pipeline.

Further, in this embodiment, the protrusion has a structure in which linear protrusions are provided in series between the end portions along the axial direction on the peripheral surface of the corner roller. The length may be set only to the central portion of the possible corner roller. Alternatively, instead of forming the filaments, for example, hemispherical or pyramidal protrusions projecting outward may be arranged at a predetermined interval and arranged at the same intervals as the filament protrusion protrusions. Further, the corner roller may be formed as a polyhedron that bends at the position where the linear protrusions are formed in the above embodiment.

[0020]

According to the present invention, rotatable corner rollers are provided at the corners, and the friction with the chain at the corners is changed from the conventional sliding friction to rolling friction. Since the corner roller is provided with a protrusion, the corner chain can be forcibly rotated by the chain that is driven, and the corner roller is prevented from rotating back to slip friction and the corner caused by this. Problems such as uneven wear of the rollers and cutting of the chain can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-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 provided in an inclined shape.

FIG. 4 is a plan view of FIG.

FIG. 5 is a perspective view when a corner roller is provided with a protrusion.

FIG. 6 is a perspective view when a protrusion is provided on an inclined corner roller.

FIG. 7 is a sectional view of a corner roller.

FIG. 8 is a cross-sectional view showing a state in which a link is engaged with a corner roller.

FIG. 9 is a perspective view showing an example of a conventional link chain type pipe conveyor.

FIG. 10 is a sectional view showing a corner portion of a conventional link chain type pipe conveyor.

FIG. 11 is a partial cutaway view showing the inside of the pipe of the link chain type pipe conveyor.

[Explanation of symbols]

 1 Straight Pipe 2 Elbow Pipe 5 Endless Chain 7 Blade 9 Drive Wheel 14 Corner Roller 24 Corner Roller 40 Linear Ridge 41 Groove

Claims (3)

[Claims] 1. A corner roller of a pipe conveyor having a built-in link chain that moves in a pipe conveyor by connecting blades or buckets, and is a corner roller provided so as to rotate in the transport direction by the movement of the link chain. In addition, the cross section of the peripheral surface of the corner roller is set to have substantially the same curvature as the cross section of the inner peripheral surface of the corner portion, and a protrusion is provided on the peripheral surface of the corner roller where it contacts the link chain. Corner rollers for pipe conveyors. 2. The projection has a linear protrusion extending in the axial direction at a position where the outer periphery of the central portion of the corner roller is divided by an integral multiple of the pitch of the chain.
Corner roller of the pipe conveyor described in. 3. A hard facing layer made of a high hardness material such as high carbon steel or alloy steel is formed in a groove on the peripheral surface of the corner roller where a linear protrusion is arranged, the groove extending in the axial direction. 3. The corner roller for a pipe conveyor according to claim 1, wherein the corner roller is integrally formed with a corner roller formed as a linear protrusion.