JP3725806B2 - Double belt conveyor meander prevention device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a meandering prevention device for a double belt conveyor. More specifically, the present invention relates to a belt meandering prevention device used in a transport facility using a double belt conveyor such as a continuous unloader or a conveyor facility.
[0002]
[Prior art]
As a conventional technique, there is a technique described in Japanese Utility Model Publication No. 57-25817.
In this prior art, as shown in FIG. 10, two circulating belts 114 and 115 are overlapped to constitute a double belt conveyor, and in the upstream in the vicinity of the lower return rollers 116 and 117, Guide belts 118 and 119 for preventing meandering are provided on the belt.
The guide rollers 118 and 119 tilt both ends of the belts 114 and 115 obliquely with respect to the central portion, and the belts 114 and 115 try to move toward the central portion, and as a result, are aligned. Meandering is prevented.
[0003]
[Problems to be solved by the invention]
However, in the prior art, since the belt 114 and 115 have only one position for correcting the meandering in the circulation path of each belt, the long distance on the return side after each belt 114 and 115 finishes conveying the object to be conveyed. The meandering was likely to occur while passing, and correction was difficult if the meandering occurred during this time.
In short, in the prior art, the belt meandering prevention was insufficient.
[0004]
In view of such circumstances, an object of the present invention is to provide a meandering prevention device in a double belt conveyor that can exhibit a higher meandering prevention effect.
[0005]
[Means for Solving the Problems]
Meandering preventing device according to claim 1, move the two endless belt, transported across the transport material between the combined the feed side of the belt, double belt conveyor which circulates through the back side The continuous unloader is arranged so as to circulate between the vertical boom and the horizontal boom. At the return side of the two belts, at least two meandering prevention mechanisms are separated in the belt moving direction. Of the at least two meandering prevention mechanisms, one meandering prevention mechanism is disposed in the vicinity of the lower return roller in the vertical boom, and the other meandering prevention mechanism is disposed at an intermediate portion of the vertical boom. are arranged, each meandering prevention mechanism is configured to both end portions of the back side belt from the guide roll to be inclined with respect to the central portion, between the meandering prevention mechanism of the 2 groups, back Usually guide mechanism for supporting the belt in a flat responsible, characterized in that is provided.
Meandering preventing device 請 Motomeko 2 is the invention of claim 1, wherein the guide rollers of the meandering prevention mechanism comprises a central roller for supporting the central portion of the belt, and the left and right inclined rolls to tilt the both end portions of the belt The bracket includes a bracket that supports the inclined roll, and the bracket includes an arc-shaped elongated hole and a fulcrum hole that can adjust the mounting angle with respect to the mounting counterpart member.
[0006]
The invention of claim 1 has the following effects.
(1) The belt is aligned by a meandering prevention mechanism at at least two points in the traveling direction of the double belt conveyor. When the belt is aligned at two points, the belt meandering between at least two points is unlikely to occur, and the belt alignment is achieved more than when the belt is aligned at one point on the exit side of the two meandering prevention mechanisms. Yes. Therefore, a high meandering prevention effect can be exhibited.
(2) Since one meander prevention mechanism aligns the return belt to be wound around the return roller below the vertical boom, the feeding belt immediately after exiting the return roller is aligned. A to-be-conveyed object can be conveyed in a state. Further, the other meandering prevention mechanism is located at the center of the vertical boom, and the belt is aligned at the portion where the meandering is most likely to occur. Therefore, the belt immediately before entering the one meandering prevention mechanism is aligned in advance. It is in a state. Therefore, the meandering prevention effect at the belt feed side start position is enhanced.
(3) The belt between the two meandering prevention mechanisms is usually a guide mechanism and the return side belt is supported flat. As a result, the end of the belt also passes through the mountain-shaped passing locus even in the entrance-side meandering prevention mechanism, and the mountain-like passing locus also passes through the exit-side meandering prevention mechanism. This means that the belt aligning effect at the entrance side meander prevention mechanism is fixed there, and the alignment effect is not significantly impaired by the subsequent external force, and again at the exit side meander prevention mechanism. The belt will be aligned. Therefore, since the alignment effect of the two meandering prevention mechanisms acts synergistically, the meandering prevention effect of the belt is remarkably high .
According to the invention 請 Motomeko 2, is swung about the bolt inserting the bracket into the fulcrum hole and tightening the bolt through the arcuate slot is adjusted to any inclination angle, optionally a guide roller It can be installed at an inclination angle of. For this reason, the optimal aligning action according to the meandering factor added to a belt can be exhibited.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
1 is a side view of a vertical boom in a continuous unloader to which the meander prevention device of the present invention is applied, FIG. 2 is an enlarged sectional view taken along line A in FIG. 1, and FIG. 3 is an enlarged view taken along line B and C in FIG. 4 is an explanatory view of the belt alignment operation, FIG. 5 is a plan view of the meandering prevention mechanism, FIG. 6 is an enlarged plan view of the main part of the meandering prevention mechanism, and FIG. 7 is an enlarged side view of the main part of the meandering prevention mechanism. FIG. 8 is a schematic side view of the continuous unloader, and FIG. 9 is a layout diagram of the double belt conveyor.
[0008]
The double belt conveyor of the present invention can be used for conveyor equipment and the like, and the most typical application example is a continuous unloader. The outline of this continuous unloader will be described with reference to FIG. 8. 1 is a cart that runs on the quay, 2 is a swivel that swivels on the cart 1, 3 is a horizontal boom that undulates on the swivel 2, and 4 is a horizontal boom. A vertical boom 5 is connected to the tip of 3 and swings. A scraping device 5 is attached to the lower end of the vertical boom 4. S is a transport ship for carrying loose objects.
[0009]
The arrangement path of the double belt conveyor in the continuous unloader as described above is shown in FIG. 10 and 11 are endless belts, and these two belts are combined to form a double belt conveyor.
Reference numeral 6 denotes two lower return rollers provided at a lower end portion of the vertical boom 4, that is, a connecting portion with the scraping device 5. 7 is a turning roller for the belts 10 and 11 on the feeding side provided in the vicinity of the upper end of the vertical boom 4, that is, at the connecting portion with the horizontal boom 3, and 8 is a turning roller for the belts 10 and 11 on the return side. is there. An upper return roller 9 is provided at the base end of the horizontal boom 3.
The two belts 10 and 11 face each other by the lower return rollers 6 and 6 and move upward while sandwiching a conveyed object such as a loose object. In this way, the vertical boom 4 portion is raised, and then the horizontal boom 3 portion is moved toward the base end portion. When the upper return rollers 9 and 9 are reached, the two belts 10 and 11 are separated from each other and are separated. Things are discharged to the chute etc. Thereafter, the belts 10 and 11 are reversed to turn the horizontal boom 3 portion toward the tip, and the direction is changed by the turning rollers 8 and 8 and the vertical boom 4 portion is moved toward the lower end. By circulating this series of movements endlessly, the loose objects are continuously conveyed.
[0010]
Based on FIGS. 1-3, the structure of the double belt conveyor in the said vertical boom 4 is demonstrated.
As described above, the two belts 10, 11 travel along the horizontal boom 3, then turn around by the turning roller 8, descend the vertical boom 4, and change direction with the lower return rollers 6, 6. Together, the center of the vertical boom 4 is raised with the loose object sandwiched therebetween. Then, the direction is changed again by the turning roller 7 and travels to the base end side of the horizontal boom 3.
During this period, the belts 10 and 11 are guided by the guide mechanism shown in FIGS.
[0011]
The guide of the belts 10 and 11 in the vertical boom 4 portion is basically performed by the guide mechanism shown in FIG. In the following description, when the feeding side belt and the return side belt are distinguished from each other, the feeding side belt is identified by reference numerals 10a and 11a, and the returning side belt is denoted by reference numerals 10b and 11b.
The belts 10a and 11a on the feed side that move across the loose object are sandwiched at both ends by pinch rollers 21 and 22, and the ear ends are guided by side rollers 23. The outer belt 11a is pressed by a flat roller 24 so as not to swell outward. As shown in FIG. 1, many feed-side guide mechanisms are provided at a short pitch from the lower end to the upper end of the vertical boom 4.
The return-side belts 10b and 11b are guided by a normal guide mechanism that supports the belt flatly by straight guide rolls 25 and 26 that are slightly longer than the belt width. The return-side guide structure is provided at a position indicated by a symbol A in FIG. 1 and provided at a relatively large pitch.
[0012]
1, one of the two meandering prevention mechanisms, that is, the outgoing meandering prevention mechanism 31 is provided at the position indicated by reference numeral B, and the other one, ie, the inlet side meandering mechanism, is provided at the position indicated by reference numeral C. A prevention mechanism 32 is provided. The meandering prevention device of the present invention comprises these two meandering prevention mechanisms. The exit-side meandering prevention mechanism 31 is provided in the vicinity of the lower return roller 6 at the lower end of the vertical boom 4, and the entry-side meandering prevention mechanism 32 is provided in the middle part of the vertical boom 4. The attachment position of the meandering prevention mechanism 32 does not have to be an intermediate position in a strict sense, and indicates a wide region from the upper 1/3 position to the lower 1/3 position of the vertical boom 4.
[0013]
The details of the meandering prevention mechanism will be described with reference to FIG. Although both the return belts 10b and 11b are provided with meandering prevention mechanisms, since both have the same configuration, the following description will be made without particular distinction.
Each meandering prevention mechanism is composed of one central roll 33 and two right and left inclined rolls 34. The central portions of the return side belts 10b and 11b are supported by a central roll 33, and both end portions are supported by inclined rolls 34 and 34.
The inclined rolls 34 and 34 incline both end portions of the belts 10b and 11b obliquely with respect to the central portion. Thus, when the end portions of the belt are inclined obliquely, If you move too far to the end of the belt, the belt will be centered trying to return to the center due to gravity and belt tension. That is, meandering is prevented.
[0014]
A support structure for the inclined roll 34 will be described with reference to FIGS. As shown in FIG. 5, the bracket 35 that supports the inclined roll 34 is attached to a horizontal girder 41 and an oblique girder 42 that constitute the vertical boom 4 that is an attachment counterpart member.
As shown in FIGS. 6 and 7, the bracket 35 includes a pair of support plates 36 and 36 that support both ends of the inclined roll 34, and a mounting base 37 that establishes the support plates 36 at both ends. The mounting base 37 is formed with one support hole 38 and two arc-shaped elongated holes 39, 39. The two long holes 39 have a shape in which an arc is drawn with the fulcrum hole 38 as a common center and into which mounting bolts are inserted.
According to this mounting structure, the mounting bolt 43 is inserted into the fulcrum hole 38 and supported swingably on the slanting girder 42 as the mounting counterpart member, and the mounting bolt 44 is mounted on the arc-shaped elongated holes 39 and 39. It can be installed by inserting and changing the mounting angle freely.
Therefore, it is possible to correct a specific meandering gaze that varies depending on the belt running position, and a meandering gaze that differs between right and left at the same place.
[0015]
In the present invention, just using the two meandering prevention mechanisms 31 and 32 is useful because an effect of preventing meandering is obtained, but it is preferable to incorporate a normal guide mechanism between the two meandering prevention mechanisms 31 and 32. . That is, as shown in FIGS. 1 and 4, the return belt is supported flatly by the straight guide rolls 25 and 26 between the two meandering prevention mechanisms 31 and 32. In such a case, the belts between the two meandering prevention mechanisms 31 and 32 are normally supported on the return side belts 10b and 11b by the guide rolls 25 and 26 of the guide mechanism. As a result, the end portions of the belts 10b and 11b also pass through the mountain-shaped passing locus in the input-side meander-preventing mechanism 23, and the mountain-side passing locus also passes through the exit-side meander-preventing mechanism 31 in the same manner. This means that the belt 10b, 11b alignment effect in the input side meander prevention mechanism 32 is fixed there, and the alignment effect is not greatly impaired by the subsequent external force. The belts 10b and 11b are aligned again by the prevention mechanism 31. Therefore, since the alignment effect of the two meandering prevention mechanisms 31 and 32 acts synergistically, the meandering prevention effect of the belts 10b and 11b becomes remarkably high. In this case, it is considered that the aligning effect works more effectively than the continuous mountain shape indicated by the dotted line.
[0016]
Although two meandering prevention devices according to the present invention have been described, three or four meandering devices may be installed. It can also be applied to conveyor equipment other than the above-described continuous unloader, and can exhibit substantially the same meandering prevention effect.
[0017]
【The invention's effect】
The invention of claim 1 has the following effects.
(1) Since the belt is aligned at two points, the meandering of the belt between at least two points is unlikely to occur, and belt alignment is achieved more than when the belt is aligned at one point. Therefore, a high meandering prevention effect can be exhibited.
(2) Since alignment is performed immediately before the lower return roller, the feeding belt immediately after exiting the return roller can convey the object to be conveyed with the alignment completed, and even at the portion where the meandering is most likely to occur Therefore, the effect of preventing meandering is enhanced.
(3) Since the belt between the two meandering prevention mechanisms is supported flatly, the end of the belt passes through a mountain-shaped passing locus in the same manner in the meandering prevention mechanism in the entrance side as well as in the meandering prevention mechanism in the exit side. Pass the Yamagata passage. For this reason, the belt alignment effect in the input side meandering prevention mechanism is fixed, and the belt alignment is performed again in the output side meandering prevention mechanism. Therefore, since the alignment effect of the two meandering prevention mechanisms acts synergistically, the meandering prevention effect of the belt is remarkably high .
According to the invention 請 Motomeko 2, it is possible to mount the guide roller is adjusted to any inclination angle, it is possible to exhibit optimal alignment action in accordance with the meandering factors applied to the belt.
[Brief description of the drawings]
FIG. 1 is a side view of a vertical boom in a continuous unloader to which a meander prevention device of the present invention is applied.
2 is an enlarged cross-sectional view taken along line A in FIG.
FIG. 3 is an enlarged cross-sectional view taken along line B and C in FIG. 1;
FIG. 4 is an explanatory diagram of a belt aligning action.
FIG. 5 is a plan view of a meandering prevention mechanism.
FIG. 6 is an enlarged plan view of a main part of a meandering prevention mechanism.
FIG. 7 is an enlarged side view of a main part of a meandering prevention mechanism.
FIG. 8 is a schematic side view of a continuous unloader.
FIG. 9 is a layout diagram of a double belt conveyor.
FIG. 10 is a side view of a meandering prevention device in a conventional double belt conveyor.
[Explanation of symbols]
4 Vertical boom 31, 32 Meander prevention mechanism 10, 11 Belt 33 Central roll 34 Inclined roll

Claims (2)

A double belt conveyor that combines two endless belts, conveys the object to be transported between the combined belts on the sending side, and circulates via the return side is installed horizontally from the vertical boom of the continuous unloader. It is arranged to circulate between the booms,
On the return side of the two belts, at least two meandering prevention mechanisms are provided apart in the moving direction of the belt,
Of the at least two meandering prevention mechanisms, one meandering prevention mechanism is arranged in the vicinity of the lower return roller in the vertical boom, and the other one meandering prevention mechanism is arranged in the middle part of the vertical boom. ,
Each meandering prevention mechanism is composed of a guide roll that obliquely inclines both end portions of the return side belt with respect to the center portion ,
A meandering prevention device for a double belt conveyor, characterized in that a normal guide mechanism is provided between the two meandering prevention mechanisms to support the return belt in a flat manner . The guide roller of the meandering prevention mechanism comprises a central roll that supports a central portion of the belt, left and right inclined rolls that incline both ends of the belt, and a bracket that supports the inclined roll.
2. The meandering prevention device for a double belt conveyor according to claim 1, wherein the bracket has an arc-shaped elongated hole and a fulcrum hole capable of adjusting a mounting angle with respect to a mounting mating member.

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