JP2012020810A - Belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt conveyor that prevents damage to a conveyor belt when a transported object is loaded.SOLUTION: An endless buffer rubber belt 9 looped over a pair of pulleys 8 and 8 is installed between a conveying surface 4 of the conveyor belt 3 and the outlet 7 of a chute 5 in such a manner as to tilt downward in the traveling direction of the conveyor belt 3.

Description

  The present invention relates to a belt conveyor, and more particularly, to a belt conveyor that prevents damage to the conveyor belt when a load is loaded.

  In general, when a transported object such as a lump or powder is loaded on a belt conveyor, the transported object is dropped toward the transport surface of the conveyor belt through a chute installed above (for example, Patent Documents). 1). Therefore, measures are taken such as shortening the distance between the chute and the conveying surface or installing a buffer plate inside the chute so that the conveyor belt is not damaged by the impact of the fall of the conveyed product.

  However, the shape and size of the transported goods are constant when targeting transported items that adhere to each other due to moisture or the like, such as belt conveyors used in open pit mines in extremely cold regions. Therefore, there was a problem that the measures described above are insufficient.

JP-A-8-282721

  SUMMARY OF THE INVENTION An object of the present invention is to provide a belt conveyor which does not damage the conveyor belt when loading a load.

  The belt conveyor of the present invention that achieves the above object is a belt conveyor provided with a chute for dropping a conveyed product through a discharge port toward a conveyance surface of an endless conveyor belt that is rotationally driven. And an endless first cushioning rubber belt or cushioning conveyor belt wound around a pair of pulleys so as to incline downward along the running direction of the conveyor belt between the conveyor belt and the conveying surface of the conveyor belt It is characterized by having been installed.

  According to the belt conveyor of the present invention, the cushioning rubber belt or the cushioning conveyor belt wound around the pair of pulleys is directed in the running direction of the conveyor belt between the conveying surface of the conveyor belt and the discharge port of the chute. Due to the installation to tilt downward, the load discharged from the chute discharge port is loaded along the upper surface of the cushion rubber belt or buffer conveyor belt as a cushion when loading the load on the belt conveyor. Since it falls to a conveyance surface after moving diagonally downward, since the impact by fall of a conveyed product is relieved, damage to a conveyor belt can be prevented.

  It is desirable that the cushioning rubber belt or the cushioning conveyor belt is rotationally driven in the direction opposite to the traveling direction of the conveyor belt. By doing so, it is possible to suppress the moving speed of the transported object along the upper surface of the cushioning rubber belt or the buffering conveyor belt obliquely downward, and further reduce the impact caused by the fall of the transported object. By adjusting the rotation speed of the rubber belt for cushioning or the conveyor belt for buffering, it is possible to control the supply amount of the conveyed product to the belt conveyor.

  In addition, the above-described shock absorbing rubber belt or shock absorbing conveyor belt can be rotated in the vertical direction and / or about an axis perpendicular to the conveyor belt conveyance surface and movable along the longitudinal direction of the conveyor belt. It is desirable to be. By doing so, it becomes possible to cope with a transported object having various properties, and it is possible to cope with a relative positional deviation between the conveyor belt and the chute.

1 is an overall view of a belt conveyor according to an embodiment of the present invention. It is a partially expanded sectional view of the installation part of the chute | shoot in FIG. It is an enlarged view explaining the movable state of the rubber belt for buffering. It is a top view explaining the movable state of the rubber belt for buffering in the XX arrow shown in FIG. It is a partial expanded sectional view of the installation part of the chute in the belt conveyor which consists of another embodiment of this invention. It is sectional drawing from the side of a chute | shoot.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a belt conveyor according to an embodiment of the present invention.

  This belt conveyor has an endless conveyor belt 3 wound around a drive pulley 1 and a driven pulley 2 that are rotationally driven by an electric motor (not shown), and a conveying surface 4 that is the upper surface of the forward conveyor belt. Is provided with a chute 5. The chute 5 has a hollow structure that is open at the top and bottom, and transports a lump or powdered material supplied from the upper large-diameter opening 6 to the conveying surface 4 through the lower-diameter discharge port 7. It is intended to load on the belt conveyor by dropping it toward.

  In such a belt conveyor, an endless cushioning rubber belt (first buffering belt) wound around a pair of pulleys 8 and 8 is provided between the conveying surface 4 of the conveyor belt 3 and the discharge port 7 of the chute 5. (Rubber belt) 9 is installed so as to be inclined downward in the running direction of the conveyor belt 3. Although the structure of the buffer rubber belt 9 is not particularly limited, a belt-like rubber member is exemplified. Further, the width of the cushioning rubber belt 9 is preferably larger than the inner diameter of the discharge port 7 of the chute 5.

  By installing the cushioning rubber belt 9 in this way, as shown in FIG. 2, when the article 10 is loaded onto the belt conveyor, the article 10 discharged from the discharge port 7 of the chute 5 is 9 is used as a cushion and moves obliquely downward along its upper surface 11 and falls from the end of the cushioning rubber belt 9 onto the transport surface 4 of the conveyor belt 3, so that the impact caused by the fall of the transported material 10 is mitigated. Damage to the conveyor belt 3 can be prevented.

  The shock absorbing rubber belt 9 is preferably driven to rotate in the direction opposite to the traveling direction of the conveyor belt 3. By doing so, the moving speed of the transported object 10 along the upper surface 11 of the shock absorbing rubber belt 9 can be suppressed, and the impact caused by the drop of the transported object 10 can be further mitigated. Further, by adjusting the rotational speed of the buffer rubber belt 9, the supply amount of the transported material to the transport surface 4 can be controlled.

  Further, the cushioning rubber belt 9 is rotatable in the vertical direction and movable along the longitudinal direction of the conveyor belt 3 (FIG. 3), and in addition, the conveying surface 4 of the conveyor belt 3. It is desirable to be able to rotate around an axis perpendicular to the axis (in particular, an axis passing through the center of the upper pulley 8) (FIG. 4). By doing so, it becomes possible to correspond to the transported object 10 of various properties (shape, size, characteristics, etc.) and to cope with relative positional deviation between the conveyor belt 3 and the chute 5. Can do. The rotation and movement of the cushioning rubber belt 9 must be performed within a range where at least a part of the upper surface 11 overlaps the projection part below the discharge port 7.

  FIG. 5 shows a belt conveyor according to another embodiment of the present invention.

  This belt conveyor has an endless cushioning rubber belt (second cushioning rubber belt) wound around a pair of pulleys 12 and 12 between the cushioning rubber belt 9 and the discharge port 7 of the chute 5 in the above embodiment. ) 13 is installed so as to incline upward in the running direction of the conveyor belt 3.

  By installing the new cushioning rubber belt 13 in this way, the transported material 10 discharged from the discharge port 7 of the chute 5 is placed on the upper surfaces 14 and 11 of the two cushioning rubber belts 13 and 9 in order as cushions. Since it falls to the conveyance surface 4 of the conveyor belt 3 after moving to diagonally downward along, the impact by the fall of the conveyed product 10 can be relieve | moderated significantly.

  Further, the new cushioning rubber belt 13 is driven to rotate in the same direction as the traveling direction of the conveyor belt 3, as in the case of the cushioning rubber belt 9, and has an axis perpendicular to the conveying surface 4 of the conveyor belt 3. It is desirable to be able to turn around and move along the longitudinal direction of the conveyor belt 3.

  In the present embodiment, the two cushioning rubber belts 9 and 13 are installed. However, three or more cushioning rubber belts 9 and 13 may be installed between the discharge port 7 and the conveying surface 4 as necessary.

  In any of the above-described embodiments, instead of the first buffer rubber belt 9 and / or the second buffer rubber belt 13, a buffer for which cover rubber is coated on both surfaces of a core made of an organic fiber canvas. A conveyor belt can be used.

  As shown in FIG. 6, it is desirable to provide a buffer plate 15 on the inner wall surface of the chute 5. By installing the buffer plate 15 in this way, dead stock of the transported material 10 is generated on the buffer plate 15, and the transported material 10 gradually moves downward in the chute 5. It is possible to suppress the amount of fall of the transported object 10.

  Although the use of the belt conveyor of the present invention is not particularly limited, it is preferably used for transporting a transported object that tends to adhere to each other and form a large lump such as a mineral calculated from an open pit mine in a cold region. be able to.

DESCRIPTION OF SYMBOLS 1 Drive pulley 2 Driven pulley 3 Conveyor belt 4 Conveying surface 5 Chute 6 Opening part 7 Discharge port 8, 12 Pulley 9, 13 Buffer rubber belt 10 Conveyed material 11, 14 Upper surface 15 Buffer plate

Claims (9)

In a belt conveyor provided with a chute that drops a transported object through a discharge port toward a conveying surface of an endless conveyor belt that is driven to rotate,
An endless first shock absorbing rubber belt or shock absorbing conveyor belt wound around a pair of pulleys is disposed between the discharge port of the chute and the conveying surface of the conveyor belt in the running direction of the conveyor belt. A belt conveyor characterized by being installed to tilt downward.   The belt conveyor according to claim 1, wherein the first buffer rubber belt or the buffer conveyor belt is rotationally driven in a direction opposite to a traveling direction of the conveyor belt.   The belt conveyor according to claim 1 or 2, wherein the first cushioning rubber belt or the cushioning conveyor belt is rotatable in the vertical direction and / or about an axis perpendicular to the conveying surface of the conveyor belt.   The belt conveyor according to any one of claims 1 to 3, wherein the first buffer rubber belt or the buffer conveyor belt is movable along a longitudinal direction of the conveyor belt.   An endless second shock absorbing rubber belt or shock absorbing conveyor belt wound around a pair of pulleys is provided between the first shock absorbing rubber belt or shock absorbing conveyor belt and the discharge port. The belt conveyor according to any one of claims 1 to 4, wherein the belt conveyor is installed to be inclined upward in a direction.   The belt conveyor according to claim 5, wherein the second buffer rubber belt or the buffer conveyor belt is rotationally driven in the same direction as the traveling direction of the conveyor belt.   The belt conveyor according to claim 5 or 6, wherein the second shock absorbing rubber belt or the shock absorbing conveyor belt is rotatable in a vertical direction and / or around a rotation axis perpendicular to a conveying surface of the conveyor belt.   The belt conveyor according to any one of claims 5 to 7, wherein the second buffer rubber belt or the buffer conveyor belt is movable along a longitudinal direction of the conveyor belt.   The belt conveyor according to any one of claims 1 to 8, wherein a buffer plate protrudes from an inner wall surface of the chute.

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