JP2008143692A - Conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyor device which is relatively unlikely to drop an object to be transported in spite of the thickness of a sealing belt as a whole wherein it is restrained to eject a large amount of objects to be transported to outside. <P>SOLUTION: The conveyor device consists of a conveyor belt 10 with cleats having a conveyor belt body 1 with a conveyance surface 1a formed in a band shape and arranged with the objects to be transported on a top surface side, edge cleats 2 standing on both edge parts of the conveyance surface 1a of the conveyor belt body 1 along a longitudinal direction, a conveyor belt 10 with cleats having a lateral cleat 3 standing between both the edge cleats to demarcate the conveyor surface 1a and a sealing belt for covering the conveyor surface side of the conveyor belt 10 with cleats. The sealing belt is provided with a sealing belt body formed in a belt shape contacted with top parts of both the edge cleats 2 and a fitting-in protruding part, protruding at a middle part in a width direction of the sealing belt body in a longitudinal direction, and being fit in between both the edge cleats 2 to fill a step of the edge cleats 2 and the lateral cleat 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention mainly relates to a conveyor device used for conveying various objects to be conveyed, in particular, objects to be conveyed such as crushed stone, sand, and powder, in a steep slope or the like.

  Conventionally, this type of conveyor device has a conveyor belt body formed in a belt-like shape and having a conveyance surface on which an object to be conveyed is arranged on the front surface side (outer surface side), and both ears of the conveyance surface of the conveyance belt body. Conveyor belt with crosspieces, including a crosspiece erected along the longitudinal direction and a horizontal crosspiece erected between both ears to partition the transport surface, in particular, the ear cross is formed into a corrugated plate shape. Corrugated side conveyor belts are used.

  A conveyor device using such a conveyor belt with a cross has an advantage that the crossed object can be conveyed while surrounding the transferred object, and therefore, the conveyed object can be conveyed even in a steep slope.

Further, in such a conveyor device using a conveyor belt with a cross, the transported object may fall over the cross depending on the inclination angle and the type of the transported object. The height of the crosspiece is assumed to be uniform, and a belt-like seal belt that covers the conveying surface side of the conveyor belt with the crosspiece and moves at the same speed as the conveyor belt with the crosspiece is also used (described below) (See Patent Documents 1 and 2).
According to such a conveyor apparatus, the object to be transported is surrounded by the transport surfaces of the crosspieces, the seal belt, and the conveyor belt with the crosspieces, so that the possibility of the articles to be transported falling is reduced.

JP 58-130806 A JP 58-130807 A

By the way, in this type of conventional conveyor device using a seal belt in combination, in order to suppress the fall of the object to be conveyed, the seal belt is attached to the conveyor belt with a cross by a pressing roller or the like at many places. Where it is necessary to press, when the seal belt is pressed in such a large number of places, the wear damage on the surface of the seal belt becomes great.
Therefore, in order to suppress such wear damage, a countermeasure has been proposed in which the number of pressing points is reduced by increasing the pitch of the pressing rollers.
However, with such a countermeasure, the smaller the number of pressed points, the more the seal belt bends between the pressed points so that the intermediate portion in the width direction swells, for example, as shown in FIG. As a result, a gap 120 larger than that allowed between the seal belt and each of the crosspieces (particularly the horizontal crosspiece 110) is created, which may cause a problem that the conveyed object easily falls.
On the other hand, measures such as increasing the rigidity by increasing the thickness of the entire seal belt can be considered, but when the entire seal belt is increased in thickness, the power cost for driving the seal belt increases.

  In the above conventional conveyor device, the relative position of both belts is shifted due to the meandering of each belt, and the end of the seal belt moves to the inside of the end of the conveyor belt with the cross. As a result, there is also a problem that a large amount of the object to be conveyed is discharged to the outside.

  In view of the above-described conventional problems, the present invention can make the conveyed object relatively difficult to fall for the overall thickness of the seal belt, and discharge a large amount of the conveyed object to the outside. It is an object of the present invention to provide a conveyor device that is also suppressed.

In order to solve the above-described problems, the present invention provides a conveyor belt body formed in a strip shape and having a conveyance surface on which the object to be conveyed is arranged on the surface side, and at both ears of the conveyance surface of the conveyance belt body in the longitudinal direction. Conveyor belt with crosspieces having ear rails erected along and horizontal rails erected between both ears to partition the transport surface;
A conveyor device comprising a seal belt covering the conveyor surface side of the conveyor belt with a cross in order to prevent the transported object from falling,
The horizontal beam is configured such that the top is set lower than the ear beam,
The seal belt is formed in a belt shape and is in contact with the top of both ears, and is protruded along the longitudinal direction at an intermediate portion in the width direction of the seal belt main body. And a fitting projection that is fitted between the bins to fill the step.

In the conveyor apparatus of the present invention, the seal belt is provided with an insertion convex portion at the middle in the width direction of the seal belt body which is likely to be bent, so that the portion becomes thick, and the average thickness as a whole. However, it can be less bent.
Therefore, the conveyor device can make it difficult for the article to be transported to fall for the average thickness of the seal belt.
Furthermore, since the insertion convex part is inserted between both ears, the conveyor device suppresses the relative positional deviation between both belts, and also prevents a large amount of conveyed objects from being discharged to the outside. .

In the conveyor apparatus of the present invention, it is preferable that a reinforcing canvas is embedded in the seal belt body.
In such a conveyor apparatus, the seal belt is more difficult to bend with respect to the thickness of the entire seal belt.

Further, it is preferable that a reinforcing canvas is embedded in the fitting convex portion.
Similarly, in such a conveyor device, the seal belt is further less likely to bend for the thickness of the entire seal belt.

  As described above, the conveyor device according to the present invention can make the conveyed object relatively difficult to fall for the overall thickness of the seal belt, and a large amount of the conveyed object is discharged to the outside. It is also suppressed.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic diagram illustrating a conveyor device according to the present embodiment.
As shown in FIG. 1, the conveyor device according to the present embodiment covers an annular cross-belt conveyor belt 10 that rotates to transport the object to be transported 30 and the surface side (outer surface side) of the cross-belt conveyor belt 10. In addition to the seal belt 20 and a plurality of pressing rollers 50 for bringing them into pressure contact with each other, a drive roller 60 for driving these belts, a driven roller 70 for defining bent and folded portions, and the like are provided. ing.

FIG. 2 is a perspective view showing a main part of one aspect of the conveyor belt 10 with a crosspiece.
As shown in FIG. 2, the conveyor belt 10 with a cross is formed in a belt shape and has a transport surface 1 a on the surface side on which a transported object 30 is arranged, and the transport surface of the transport belt body 1. A pair of ear rails 2 erected along the longitudinal direction at both ears of 1a, and a plurality of horizontal rails 3 erected between both ear rails 2 to partition the conveying surface 1a. Yes.
That is, the conveyor belt 10 with a cross has a conveyance surface 1a sandwiched between standing binaural bars 2 on the surface side of the conveyance belt main body 1 and traverses between the bins. A housing space, which is a space on the transport surface 1a, is defined by a plurality of horizontal rails 3 standing upright.

The conveyor belt body 1 is formed into a belt shape by vulcanizing a rubber composition.
In the rubber composition, various additives such as a filler, a softening agent, an anti-aging agent, a vulcanization accelerator, a vulcanizing agent, and a lubricant are usually blended in addition to the rubber component.
Further, as the rubber component, conventionally known rubber components used for rubber belts for conveyance, for example, one or more of natural rubber, styrene butadiene rubber, butadiene rubber, and acrylonitrile butadiene rubber can be used.
Further, as a filler, a softener, an anti-aging agent, a vulcanization accelerator, a vulcanizing agent, a lubricant, and the like, conventionally known materials used for rubber belts for conveyance can be used.
The amount of these additives is preferably 40 to 70 parts by weight of filler, 0 to 10 parts by weight of softener, 1 to 3 parts by weight of anti-aging agent, and 100 parts by weight of rubber component. The sulfur accelerator is 0.5 to 1.5 parts by weight, the vulcanizing agent is 1 to 3 parts by weight, and the lubricant is about 1 to 2 parts by weight.
Moreover, the said conveyance belt main body 1 is shape | molded by vulcanizing, after forming the above rubber compositions in a strip | belt shape.
Vulcanization is usually carried out by heating to 140 to 160 ° C, preferably 146 to 150 ° C, although it varies depending on the rubber component and the like.

The ear rail 2 is corrugated by bending a belt-like rubber sheet so that a portion away from the conveyor belt main body 1 can be expanded and contracted so as to correspond to the bending and turning track of the conveyor belt 10 with a rail. And a bottom plate portion 6 which is formed wider than the wave amplitude of the main body portion 5 and is fixed to the bottom surface of the main body portion 5, and is conveyed with the bottom plate portion 5. When the belt body 1 is fixed, the belt body 1 is erected on the surface side of the conveyor belt body 1.
The standing beam 2 is erected on the conveyor belt body 1 so as to be substantially vertical. However, the ridgeline of the wave in the corrugated body portion 5 is preferably formed on the conveyor belt body 1. It is set to incline toward the direction of travel.
The bottom plate 6 and the conveyor belt body 1 are fixed by a method using an adhesive or a screw.
The ear cross 2 (both the main body portion 5 and the bottom plate portion 6) is also formed by vulcanizing a rubber composition. The rubber composition and vulcanization are the same as those of the conveyor belt main body 1. is there.

The horizontal rail 3 is a plate-like rubber member, and is erected on the conveyor belt main body 1 along the width direction so as to cross between the ear rails 2. Each is fixed.
This fixing is performed by a method using an adhesive or a method using a screw.
Further, the horizontal rail 3 is preferably attached to the ear rail 2 so as to incline toward the longitudinal direction (traveling method) of the conveyor belt body 1 in order to facilitate the conveyance of the object 30 on an inclined ground. It is erected on the conveyor belt body 1 so as to incline along the inclination of the ridgeline of the wave, and the height of the top portion 3a from the conveyor belt body 1 is higher than the height of the top portion 2a of the ear cross 2 It is set to be low.
The inclination angle, that is, the angle formed between the horizontal rail 3 (and the ridgeline) and the perpendicular of the conveyor belt body 1 is preferably set to about 0 to 20 degrees.
The step (height difference) between the top 2a of the ear cross 2 and the top 3a of the horizontal cross 3 is preferably set to 5 to 10 mm.
The horizontal rail 3 is also formed by vulcanizing a rubber composition. The rubber composition and vulcanization are the same as those of the conveyor belt body 1.

FIG. 3 is a cross-sectional perspective view showing one aspect of the seal belt 20.
The seal belt 20 has a seal belt main body 21 (flat belt) formed in a belt shape as described above, and is protruded at an intermediate portion in the width direction on the surface side of the seal belt main body 21, and extends along the longitudinal direction. It has the fitting convex part 22 extended.

The seal belt main body 21 is preferably embedded with a reinforcing canvas 4 along the surface direction of the seal belt main body 21.
In FIG. 3, two reinforcing canvases 4 are embedded.

The seal belt main body 21 is formed by, for example, forming the rubber composition into a belt shape and vulcanizing the rubber composition while embedding the reinforcing canvas 4 in the rubber composition.
The preferred rubber composition of the seal belt body 21 is the same as that of the transport belt body 1. Further, normal vulcanization conditions and preferable vulcanization conditions for molding the seal belt main body 21 are the same as those of the transport belt main body 1.
As the reinforcing canvas 4, for example, a polyester cloth in which warp yarns and weft yarns are woven with polyester yarns is used.

  The fitting convex portion 22 of the seal belt 20 is preferably formed by a band-like body (flat belt) having a width narrower than that of the seal belt main body 21, and is protruded from the seal belt main body 21.

The belt-like body is preferably embedded with a reinforcing canvas 4 along the surface direction of the belt-like body.
Such a belt-like body is formed, for example, by embedding a reinforcing canvas 4 in a rubber composition and vulcanizing it.
A preferable rubber composition of the belt-like body is the same as that of the transport belt body 1. Further, normal vulcanization conditions and preferable vulcanization conditions for molding the belt-like body are the same as those in the case of the conveyor belt body 1.
In addition, as the reinforcing canvas 4 embedded in the belt-like body, for example, a polyester cloth in which warp yarns and weft yarns are woven with polyester yarns is used.

The width direction of the insertion convex portion 22 is set to a length that can be inserted between the ear rails 2, and specifically, with respect to the shortest width between the ear rails 2 (usually the width of the horizontal rail). The length is set to 90 to 95%.
If it exceeds 95%, the contact surface between the side surface (width direction end surface) of the insertion convex portion 22 and the ear cross 2 may increase, and abnormal wear may occur. If it is less than 90%, the insertion convex portion The transported object 30 easily enters between the side surface 22 and the ear cross 2, and the amount of the transported object 30 that falls is increased.
Further, the protruding height h (that is, the thickness of the belt-like body) of the fitting convex portion 22 is set to a height corresponding to the step between the ear beam 2 and the horizontal beam 3.

For the adhesion between the seal belt body 21 and the belt-like body, an adhesion method such as adhesion by press vulcanization, adhesion by an adhesive, or welding by a wader is used.
Specific examples of the adhesion by press vulcanization include a method in which unvulcanized compositions are each formed into a strip shape, and these are laminated and vulcanized simultaneously at 146 to 150 ° C., for example. .

Specific examples of the adhesion by the adhesive include a method in which a buffing process for forming irregularities on the adhesive surfaces of the seal belt main body 21 and the belt-like body is performed, and then both are pressure-bonded with a hammer or the like via a normal temperature adhesive. Can do.
Examples of the room temperature adhesive include “Sanpat ECO” (trade name) manufactured by Bando Chemical Co., Ltd.

  As shown in FIG. 4, in the conveyor device of this embodiment, in the state where the seal belt 20 is arranged so as to cover the surface side of the conveyor belt 10 with a crosspiece, both ears of the seal belt main body 21 are the ears. The top 2 a of the crosspiece 2 is in contact with the top 22 a of the fitting protrusion 22, and the top 2 a of the ear cross 2 is in contact with the top 2 a.

The conveyor device of the present embodiment configured as described above is less likely to bend due to the presence of the insertion convex portion 22 in the width direction intermediate portion of the seal belt 20 as compared with the case where only the seal belt main body 21 is used. As shown in FIG. 5, during the conveyance, the top 3a of the horizontal rail 3 and the fitting convex portion 22 are maintained in contact with each other, so that the object to be conveyed 30 can hardly fall.
Moreover, as a result that the intermediate portion in the width direction is difficult to bend, the interval between the pressing rollers 50 can be widened, and the surface of the seal belt 20 can be reduced in wear damage, that is, excellent in durability.
Furthermore, as a result of the insertion of the insertion convex portion 22 limiting the relative positional shift range of the belts 10 and 20, it is possible to prevent a large amount of the conveyed object 30 from being discharged to the outside.

In addition, although the conveyor apparatus of this embodiment is comprised as mentioned above, the conveyor apparatus of this invention is not limited to the said structure, A design change is possible suitably within the range which this invention intends. .
For example, in the present embodiment, the seal belt 20 is configured by adhering a seal belt main body 21 and a belt-like body that becomes the fitting convex portion 22, and these are integrally formed by simultaneous molding. However, it is within the scope of the present invention.

Example 1
As shown in FIG. 6, an apparatus designed to convey the object to be conveyed 30 to a height of 7000 mm is used, and the conveyor belt 10 with a crosspiece and the seal belt 20 are further designed as shown in FIG. Two reinforcing canvases 4 are embedded in each of the seal belt main body 21 and the insertion convex portion 22. The composition of each rubber composition is as shown in Table 1 below. Then, an operation was performed in which a predetermined amount of the object to be transported 30 was loaded between the horizontal rails 1 pitch at the tail horizontal portion 80 and transported to the head horizontal portion 90 under the following transport conditions.
The total transport amount transported to the head horizontal portion 90, the fall amount, and the transport efficiency (the total transport amount / load amount × 100%) between the pitches on which the transported object 30 is stacked and the two pitches behind it. Was measured.
Furthermore, the driving power consumption of the conveyor belt and the seal belt and the maximum positional deviation (meandering amount) between the conveyor belt and the seal belt were measured.
In FIGS. 6 and 7, the unit of each numerical value is mm. In addition, the pitch of the horizontal bars is an angle formed by the 500 mm conveying belt body 1 and the horizontal bars 3 is 90 degrees.
<Conveying conditions>
Belt transport speed: 60 m / min
Loading weight at tail horizontal part: 4800g
Transported object: crushed stone (particle diameter Φ5-10mm)

Comparative Example 1
As shown in FIG. 7 (b), the flat belt having the same structure as the seal belt main body 21 of the first embodiment is used as the seal belt 20 while eliminating the step between the ear beam 2 and the horizontal beam 3, and the other examples are the same as in the first embodiment. In the same manner as described above, the total transport amount, the fall amount, the transport efficiency (total transport amount / loading amount × 100%), the power consumption, and the maximum misalignment amount (meandering amount) were measured.

Comparative Example 2
As shown in FIG. 7C, a flat belt (reinforcing reinforced canvas) having a step difference between the ear beam 2 and the horizontal beam 3 and having the same thickness as the total thickness of the seal belt main body 21 and the fitting convex portion 22 of the first embodiment. The number is 2) as the seal belt 20, and otherwise the same as in Example 1, the total amount of conveyance, the amount of fall, the conveyance efficiency (total amount of conveyance / loading amount × 100%), power consumption and maximum The amount of displacement (meandering amount) was measured.

The results of Example 1, Comparative Example 1 and Comparative Example 2 are shown in Table 2 below.

  As is apparent from Table 2, it is recognized that by providing the insertion convex portion 22 without changing the seal belt main body 21 to a thick one, the conveyance efficiency is significantly improved with relatively low power consumption. It was. It was also observed that the amount of meandering was very small.

The schematic diagram which shows the conveyor apparatus of one Embodiment. The partially broken perspective view which shows the principal part of the conveyor belt with a crosspiece of the embodiment. The partially broken perspective view which shows the principal part of the seal belt of the embodiment. The partially broken perspective view which shows the principal part of the conveyor belt with a crosspiece and the seal belt of the conveyor apparatus of the embodiment. Sectional drawing which cut | disconnected the width direction intermediate part of the belt with a crosspiece and the seal belt in the conveyance state of the embodiment. Schematic schematic diagram of conveyor device used in Examples and Comparative Examples (A) is a width direction sectional view showing a conveyor belt with a cross and a seal belt of Example 1. (B) is a cross-sectional view in the width direction showing a conveyor belt with a cross and a seal belt of Comparative Example 1. (C) is a cross-sectional view in the width direction showing a conveyor belt with a cross and a seal belt of Comparative Example 2. The width direction sectional view which shows the conveyor belt with a cross in a conventional conveyor apparatus, and a seal belt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Conveying belt main body 1a ... Conveying surface 2 ... Ear crosspiece 2a ... Top part of ear crossing 3 ... Horizontal crosspiece 3a ... Top part of horizontal crosspiece 4 ... Reinforcement canvas 10.・ Conveyor belt with crosspieces 20 ... Seal belt 21 ... Seal belt body 22 ... Inserted convex part 30 ... Conveyed object

Claims (3)

A conveyor belt body formed in a belt shape and having a conveyance surface on which the object to be conveyed is arranged on the front surface side, and ear rails erected along the longitudinal direction at both ears of the conveyance surface of the conveyance belt body, and the conveyance A conveyor belt with a cross having a horizontal cross placed between both side crosses to partition the surface;
A conveyor device comprising a seal belt covering the conveyor surface side of the conveyor belt with a cross in order to prevent the transported object from falling,
The horizontal beam is configured such that the top is set lower than the ear beam,
The seal belt is formed in a belt shape and is in contact with the top of both ears, and is protruded along the longitudinal direction at an intermediate portion in the width direction of the seal belt main body. And a fitting projection that is fitted between both ears to fill the step. The conveyor apparatus according to claim 1, wherein a reinforcing canvas is embedded in the seal belt body. The conveyor apparatus according to claim 1, wherein a reinforcing canvas is embedded in the fitting convex portion.

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