JP2007137670A - Belt meandering and rolling prevention idler in belt conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a belt conveyor capable of suppressing occurrence of rolling and meandering of a belt in a curve having many curves having small radii of bending continuously on the left and right sides and having large rate of folding in the horizontal direction. <P>SOLUTION: Meandering and rolling of the belt 1 are prevented by eliminating difference between inner peripheral length and outer peripheral length of the belt 1 on the curve conveyor by making their peripheral length the same by trampling on an end part of the inner peripheral side belt 1 by a roller 7 and causing wave-like wrinkles in an inner side end part of the belt 1 among three points by a carrier roller 3 and obliquely standing rollers 5 having different angles. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  Roller idler for preventing belt meandering and rolling from occurring in the curved portion of the belt conveyor of the present invention

The meandering of the belt generated in the conveyor has been considered as the cause of solid wear due to uneven wear of roller bearings and the like, the outer diameter of the roller and the like, and the growth of dust attached to the back of the belt.
The conveyor does not significantly affect the conveyance of the vertical movement of the traveling frame relative to the horizontal.

The prevention of meandering of the conveyor belt is caused by the lateral inclination of the belt traveling direction.
In recent years, rather than a conveyor that transports several general-purpose conveyors while transferring them, a curved conveyor, snake-con or three-dimensional conveyor, and a cylindrical conveyor with a belt rounded into a cylindrical shape have been developed. It's working, but there are problems.

Since the cylindrical conveyor rounds the belt, the belt width increases. On the other hand, with a small curve with a small conveyance amount, it is difficult to form the belt against a radius. When used for a long time, it folds inward due to rounding folds. There was a problem such that the conveyance amount was unquestioned or the belt cylinder was reversed when the specified amount was supplied, but the belt was transversely cut.
This problem is difficult when the filling rate is 60% or more with respect to the cylindrical cross section, and powder transportation is good, but the lump is damaged and spilled due to the structure in which the belt is molded and wrapped with a roller.

  When the conveyor trough angle is increased, a phenomenon occurs in which the belt bends toward the belt width core side. This phenomenon causes the belt to run the shortest distance along the inner roller of the curve section. In extreme terms, the trough center approaches the center of the inner Earl, and rolling occurs. Since both ends of the belt are pointed up and down, unloading occurs on a small curve.

Isn't it possible to create a conveyor without a special belt using a normal 30 degree trough and 45 degree trough and without making a special belt?
The minimum radius of a conventional curve conveyor is about 200 M with a belt conveyor having a width of 750 or less although it depends on the belt width. The actual width of 150M are seen with a 600-width belt, but it is approaching 100M or less.

Isn't a curved conveyor capable of handling 80M or less even when the belt width is increased to 1200?
The transfer speed of 150M / min has a difficult problem.
Noise is not generated when there are few connections. At the dam site and the like, in the transportation of the aggregate of the aggregate 50 to 150 selected, the sound and dust of connection are problems.
Japanese Patent No. 64-34807 Patent 1-34807 Patent 6-305529 Japanese Patent Application 2001-306943 Ramsa ABE

  Is it possible to suppress the occurrence of rolling in the curved part of the belt conveyor and prevent meandering, and even if the bending radius is small, the conveyance amount is large, the conveyance speed is fast, and can it run without spilling?

  Using a versatile JIS carrier idler, the difference in the length of the belt contacting between the outer roller and the outer roller in the curved portion is adjusted to the same distance. Naturally, since the inner curve is long, the end of the belt on the inner side of the curve is made to wave.

  Reduce the equipment cost by achieving the purpose of a conveyor with many connections with a single conveyor. It is effective in preventing dust, noise and unloading generated at the connecting part.

  The carrier idler that supports the load of the transported object depends on the transported object, but a JIS 30-degree trough or 45-degree trough flora set is applied to the entire belt line, and only the inner curve has a wave that synchronizes with the belt inner length and outer circumference length with the inclined roller. The same distance is created with a tread roller that can hold the belt up.

The carrier idler that supports the load of the conveyed product uses a JIS carrier stand and a roller.
Both straight and curved sections are arranged on all lines, and the end face of the belt can be pressed with a roller inclined at about 80 degrees to the trough angle formed by the 30-degree stand used inside the curved section. Make a treadle roller.

  The trampled roller can be a cantilever support roller or a JIS side roller up to a belt width of 750. The stepping roller presses the belt end side portion with a sliding function in the horizontal oblique downward direction or upward and downward so that the stepping pressure can be increased or decreased from the outside of the belt. Decreasing the presser foot pressure, you can freely control the size of the ridges on the end of the belt.

  The carrier roller installed on the curve part by the action of stepping on the belt is arranged in a fan shape, and the distance the curve of the belt running on it differs from the inside and the outside, the difference becomes larger as the radius becomes smaller and the running length becomes longer growing. Because the belt travels the shortest distance, it is pulled inward and causes a rolling phenomenon.

  In order to prevent this rolling, the end surface of the belt is stepped on. By pressing the end side of the belt, the scooping is stopped and the belt between the carrier rollers is wrinkled. The length is adjusted by the wrinkle. If the problem is solved by stepping between the carrier rollers as described above, the center of the roller support is considered to be effective. However, the center of the support squeezes into the roller or rises with a slight wave of the belt.

In order to reliably control the specified amount by pressing the end face of the belt, a roller that receives pressure applied to the belt is required.
Therefore, when the inclined roller is placed before and after the carrier roller, the load of the conveyed product is received by the carrier roller, and the side load applied to the inner radius is supported by the inclined roller.

In the structure of the oblique roller, the U-shaped frame is joined to the conveyor frame by the stand base with bolts. The upper roller-shaped trough angle of the roller frame is tilted up to about 30 degrees plus the carrier roller trough angle. Install a roller.
The action of the shallow angle roller, the deep angle roller, and the JIS roller at the low position of the oblique roller has the effect of naturally generating a triangular wave between these three points, and the angle of the oblique roller is the same angle. If you do not use it, you will not have any problems with the roller.

  Using the tilt of the oblique roller stand, hold the roller bracket up and down, and the roller between them. Using the oblique stand, take out the bracket from the side of the frame and join the stepping roller. The tread roller is tilted about 5 degrees and pressed backward with a delay angle to push the belt end face back toward the center of the belt, and acts the same as a forward tilting carrier roller.

Both the tilting idler and the stepping roller are integrated, and the stepping roller is not installed on the tilting roller installed in front of the carrier roller.
The stepping roller integrated with the oblique roller stand is installed close to the carrier roller so that the stepping roller comes forward in the belt traveling direction. The operation of the stepping roller adjusts the length by stepping on the difference in the length of the belt, pressing the belt to the outside lower part, forming a waveform. A long hole is made in the tilting idler stand mounting base, and the contact strength between the tilting roller and the belt can be adjusted.

  For conveyors with a relatively narrow belt width of up to 750 mm, one set of inclined stepping rollers does not require a front inclined roller, and no problem arises. However, if the radius is small and the conveyance amount is large, a vertical roller is provided. In front of the belt running direction, it is about 100 mm at the end of the belt width belt with a slanted roller on the inner side of the radius, making a deep trough and receiving with the roller to push up the belt.

The tilting roller with a stepping roller installed in front of the carrier roller is a shape that supports the belt with three points between the rollers located outside the rounded part inside the three-point carrier roller when making a trough that is 10 degrees deeper. Thus, a triangular wave is generated between the front and front oblique rollers. The belt is brought into contact with the inclined roller in front of the bag and the end of the belt is bent into a square shape to run.

Due to the action of the front oblique roller creating a deep trough, the belt is momentarily sprinkled, and when the belt is pushed to the center of the conveyor and moves beyond the roller away from the oblique roller, rolling occurs due to the belt tension.
The stepping roller makes it easy to create a corrugated wave shape by pressing the side of the belt, and adjusts the difference in belt length with the length of the collar.

It is more advantageous to run with a deep trough than the JIS carrier idler 30 to 45 degrees traflora described above.
The oblique roller is installed before and after the carrier roller inside the bent portion if the bending radius is reduced, but if the radius is 100M radius or more, it can be appropriately installed by skipping one set.
For the 900 to 1400 width belt, the deeper JIS carrier trough is better, and all the inclined rollers can be provided at the curved portion.
In this case, the stepping roller bracket is a support roller on both sides, and has a structure that can withstand the pushing-up force due to the rolling action of the belt.

  Although the curve portion traveling on the loading side can be performed as described above, the traveling of the return side belt can be performed obliquely or U-shaped.

The return side is in the flat belt state as before, and the straight portion is running on the curve, and the return side flat belt is pressed from the top by a combination of two long and short rollers.
The pressing roller can hold the belt with a long roller on the inner curve side. The position is between the enclosing rollers.

  Join the joint bracket and guide that are passed between the conveyor frames, and suspend the roller frame from the bracket to the lot. The suspension position is such that the guide pipe is suspended from the joint material on the outer periphery side and inner periphery side of the curve, and the guide lot is passed.

  A bracket is attached to the lower part of the U-shaped idler to hold two long and short rollers, and the upper part of the idler frame on the outer periphery side and the horizontal member frame are routed through a lot, and the hanging fulcrum is prevented at one place in the horizontal direction. In addition, the cross bar is restrained by a guide bar that can turn 90 degrees with respect to the belt, and the weight of the frame and the roller is pressed down on the outer periphery obliquely with the weight of the frame and the roller lying on the belt.

  Rollers arranged in a straight line on the return side shall conform to the general-purpose conveyor pitch. 7. Ritan rollers on the curve are arranged radially in the center of the radius. From the conveyor frame 23. 19. With hanging bracket. Lower roller 20. The upper roller fixes the roller shaft on the top to prevent it from lifting.

21. Vertically in the immediate vicinity of the return roller. Raise the surrounding roller. The roller should be fixed vertically. The suspension frame is engaged with the conveyor frame.
The surrounding roller narrows the arrangement pitch as the radius of curvature decreases. The belt is pressed from above with a pressing roller between the surrounding rollers.

The presser roller with a U-shape placed between the return roller is 18. 10. Passed on conveyor frame From horizontal tethers 11.12. 13. Bracket With a binder. Suspended roller frame to prevent rotational force due to belt inertia Use the lot as a guide and slide up and down.
With the short roller side as a fulcrum, the belt is held down by the combined weight of the roller and the frame, and the long roller pushes the belt that tries to move inside the curve. A belt is grabbed between the surrounding roller and the surrounding roller, and a large wave is made with the shape roller to adjust the distance between the outer and inner circumferences of the rollers, and the lengths of the inner and outer circumference belts are synchronized. The belt moves to the outer peripheral side by pressing it with a rounded roller, and when the belt is pressed, it lifts and pops out with the surrounding roller to prevent it.

Industrial applicability

When it is desired to bend a part of a curve conveyor or a normal belt conveyor, it is possible to prevent the meandering and rolling of the belt by making a ridge with the outer circumference and inner circumference of the belt between the rollers.
When it is desired to bend a part of a curve conveyor or a normal belt conveyor, it is possible to prevent the meandering and rolling of the belt by making a ridge with the outer circumference and inner circumference of the belt between the rollers.

The gist of the equipment is that the load of the transported object is the same as that of a conventional linear conveyor, and a JIS carrier stand and a roller are used to support the load at the time of the shortest running of the belt on the curve by the inclined roller.
The belt climbs to the inside of the curve due to the tension of the driving pulley. The pressing roller is set at a delay angle with respect to the belt with a stepping roller on the side of the belt end that climbs up.

Explanatory drawing showing the implementation method of the curve conveyor Explanatory drawing showing the listing of curved conveyors Relationship diagram between oblique roller and JIS roller Top view of inclined roller Top view of inclined roller Character roller diagram for Ritan roller Enclosed roller diagram

Explanation of symbols

1. Belt 2. 2. belt end 3. Carrier roller 4. Carrier stand For inclined roller 80 degrees 6. 6. Stepping roller holder Stepping roller8. For inclined roller 70 degrees 9. Enclosure roller holder 10. Horizontal connecting frame 11. Upper bracket 12. Lower bracket 13. Connecting plate 14. U-shaped roller frame15. Short roller 16. Long roller 17. Guide lot 18. Conveyor frame 19. Ritan lower roller 20. Ritan upper roller 21. Enclosure roller 22. Upper and lower return roller hanging bracket

Claims (3)

A roller is mounted on a tilted roller stand, and the roller is held at a right angle by a bracket that extends in the lateral direction of the belt from the stand that is tilted at 70 degrees out of two tilt angles of approximately 60 degrees and approximately 70 degrees. The bracket can be slid up and down and crossed with an inclined roller. The intersecting rollers are set to a delay angle of about 5 degrees behind the belt running.
A carrier stand is sandwiched in the immediate vicinity of the carrier roller stand arranged on the curved portion, and a 70 degree oblique frame is arranged on the belt running side and a 60 degree oblique frame is arranged on the front side.
This inclined roller joins the stand to the curve inner frame in the curve conveyor. Two rollers of different lengths are attached to the lower side of the character frame in the shape of a character.
The short roller is placed on the outer curve side, the long roller is placed on the inner curve side, the combined angle between the two rollers is around 140 degrees, and the short frame holding structure can be freely adjusted around 10 degrees. A bracket that allows the fulcrum to be changed is installed on the short roller side of the upper part, and it is hung from the cross member passed to the curved conveyor frame. Suspend the guide bar from the cross member at a position close to the inner curve. To install the guide rod, move the guide rod through the guide ring by creating a guide ring that moves left and right on the frame that moves only to the left and right. Hold the Ritan belt lightly between the two upper and lower Ritan rollers to prevent the roller placed on the upper side of the belt from lifting.
Stand the flat roller vertically on both sides of the belt and gently press the belt edge.
The position of the standing roller is very close to the return roller, and it can be either before or after the belt traveling direction. The return roller pitch is about 3.5M, and the presser roller of claim 3 is placed in the middle of the conveyor curve. A return belt meandering idler that holds the return belt in place with the long roll side.

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