JP2021070547A - Belt support device and belt conveyor - Google Patents

Abstract

To provide a belt support device capable of suppressing elongation of a rope embedded in a conveyor belt, and a belt conveyor comprising the same.SOLUTION: A belt support device 20 comprises: a frame body 30 constituted so as to pass a conveyor belt 16; a pair of first support rollers 32a, 32b for supporting both end parts 26a, 26b on a carrier side 16a of the conveyor belt 16 so that the carrier side 16a has a bag-shaped cross section; and carrier rollers 34a, 34b for supporting the carrier side 16a from below at a lower side than the first support rollers 32a, 32b.SELECTED DRAWING: Figure 4

Description

The present invention relates to a belt support device for supporting a conveyor belt of a belt conveyor and a belt conveyor provided with the belt support device.

Conventionally, belt conveyors have been used in various facilities. For example, in port facilities, belt conveyors are used to transport raw materials (loose objects) such as iron ore landed from cargo ships.

FIG. 1 is a schematic view showing a basic configuration of a conventional belt conveyor, and FIG. 2 is a schematic cross-sectional view showing a portion AA of FIG. As shown in FIGS. 1 and 2, the conventional belt conveyor 1 generally has a pair of pulleys 2 and 3, an endless belt 4 wound around the pulleys 2 and 3, and the pulleys 2 and 3. A plurality of carrier rollers 5 provided to support the carrier side 4a of the belt 4 and a plurality of return rollers 6 provided to support the return side 4b of the belt 4 between the pulleys 2 and 3 are provided. ing.

As shown in FIG. 2, the carrier roller 5 and the return roller 6 are supported on the ground G by the support unit 7. The conveyed object 8 is conveyed by the carrier side 4a of the belt 4. In FIG. 1, the support unit 7 and the conveyed object 8 are not shown in order to avoid complicating the drawings.

By the way, it may not be possible to arrange the support unit 7 on the ground G due to geographical problems or restrictions due to other equipment arranged on the ground G. In such a case, the conveyed object 8 is conveyed in a bag shape on the carrier side 4a so that the conveyed object 8 does not fall from the carrier side 4a above the area where the support unit 7 cannot be arranged. It is conceivable to do. For example, in the conveyor disclosed in Patent Document 1, in a roller stand, a pair of rollers support both ends of the belt in the width direction so as to sandwich them from the back surface side of the belt. As a result, the belt is made into a bag shape so that luggage can be stored inside. Then, the belt is sent to the next roller stand in the shape of a bag.

JP-A-54-75773

It is considered that the conveyor disclosed in Patent Document 1 can convey the conveyed object between adjacent roller stands while suppressing the conveyed object from falling from the belt. However, as a result of detailed studies by the present inventors, it has been found that the conveyor disclosed in Patent Document 1 may not be able to operate stably as described below.

In the conveyor of Patent Document 1, reinforcing cores are embedded at both ends in the width direction of the belt. A wire rope is generally used as the reinforcing core. Further, in the conveyor of Patent Document 1, as described above, both ends of the belt in the width direction are supported by a pair of rollers in a bag-shaped state. Therefore, a large load is applied to the wire ropes buried at both ends in the width direction of the belt, and the wire ropes may be stretched. As a result of the study by the present inventors, it has been found that the belt may not be able to rotate smoothly due to the large elongation of the wire rope. This makes it difficult for the conveyor to operate stably. In particular, if the difference in the amount of elongation between one wire rope and the other wire rope becomes large, stable operation of the conveyor becomes more difficult.

Therefore, an object of the present invention is to provide a belt support device capable of suppressing the elongation of a rope embedded in a conveyor belt of a belt conveyor, and a belt conveyor provided with the belt support device.

The gist of the present invention is the following belt support device and belt conveyor.

(1) A belt support device for supporting the conveyor belt of a belt conveyor provided with an endless conveyor belt and a pair of ropes embedded at both ends in the width direction of the conveyor belt.
A frame body configured to allow the transport belt to pass through, and
A pair of first support rollers that are supported by the frame and support both ends of the carrier side so that the carrier side of the transport belt has a bag-like cross section.
A carrier roller that is supported by the frame and supports the carrier side from below below the pair of first support rollers.
A belt support device comprising.

(2) The above (1), further including a pair of second support rollers that are supported by the frame and support both ends of the return side so that the return side of the transport belt has a U-shaped cross section. Belt support device.

(3) The frame body includes a first frame portion that forms a space for passing the carrier side and a second frame portion that forms a space for passing the return side below the first frame portion. Have and
The pair of first support rollers and the carrier roller are provided inside the first frame portion so as to be supported by the first frame portion.
The pair of second support rollers are provided inside the second frame portion so as to be supported by the second frame portion, and the lower portion of the first frame portion is the said when viewed from the moving direction of the transport belt. The belt support device according to (2) above, which supports the return side so as to be located inside the return side.

(4) In the pair of second support rollers, both ends on the return side are from both ends on the carrier side so that the transport surface of the transport belt faces upward and when viewed from the moving direction of the transport belt. The belt support device according to (3) above, which supports the return side so as to be located on the outside.

(5) A pair of pulleys and
An endless transport belt wound around the pair of pulleys,
A pair of ropes buried at both ends in the width direction of the transport belt,
A linear member provided above the transport belt so as to extend along the transport belt, and
The plurality of belt support devices according to any one of (1) to (4) above, which are suspended from the linear member.
Belt conveyor equipped with.

(6) A pair of reversing devices provided on the upstream side and the downstream side of the plurality of belt support devices in the moving direction on the return side of the conveying belt and reversing the conveying surface and the back surface of the conveying belt are further provided. The belt conveyor according to (5) above.

According to the present invention, it is possible to suppress the elongation of the rope of the conveyor belt of the belt conveyor.

FIG. 1 is a schematic view showing a basic configuration of a conventional belt conveyor. FIG. 2 is a schematic cross-sectional view showing a portion AA of FIG. FIG. 3 is a schematic view showing a belt conveyor according to an embodiment of the present invention. FIG. 4 is a schematic cross-sectional view showing a portion BB of FIG. FIG. 5 is a schematic view showing a belt support device according to another embodiment of the present invention. FIG. 6 is a schematic view showing a modified example of the belt support device.

Hereinafter, the belt support device according to the embodiment of the present invention and the belt conveyor provided with the belt support device will be described with reference to the drawings.

FIG. 3 is a schematic view showing a belt conveyor according to an embodiment of the present invention, and FIG. 4 is a schematic cross-sectional view showing a portion BB of FIG. The belt conveyor 10 shown in FIG. 3 is bridged between two separated points P1 and P2.

As shown in FIG. 3, the belt conveyor 10 includes a head pulley 12, a tail pulley 14, a conveyor belt 16, a pair of reversing devices 17, a linear member 18, a plurality of belt support devices 20, and a plurality of rollers 22. .. As the configuration of the head pulley 12, the tail pulley 14, and the roller 22, the same configuration as the known belt conveyor head pulley, tail pulley, and roller (carrier roller and return roller) can be used. Therefore, the description of the head pulley 12, the tail pulley 14, and the roller 22 will be omitted.

The transport belt 16 has an endless shape and is wound around a head pulley 12 and a tail pulley 14. In FIG. 3, the moving direction of the carrier side 16a of the transport belt 16 is indicated by an arrow X1, and the moving direction of the return side 16b of the transport belt 16 is indicated by an arrow X2. The rotation direction of the transport belt 16 is not particularly limited, and the conveyor belt 16 may be rotated in the reverse direction. That is, the moving direction of the carrier side 16a and the moving direction of the return side 16b may be reversed. Although the details will be described later, the transport belt 16 is provided so as to pass through the inside of each belt support device 20.

As shown in FIG. 4, the transport belt 16 has a transport surface 24a and a back surface 24b. The conveyed object 8 is placed on the conveyed surface 24a. Both ends 26a and 26b of the transport belt 16 in the width direction project toward the back surface 24b, respectively. Wire ropes 28a and 28b are embedded in both ends 26a and 26b of the transport belt 16 as reinforcing members for reinforcing the transport belt 16, respectively. A rope other than the wire rope may be used as the reinforcing member. For example, fiber ropes made of materials such as cotton, linen, or synthetic fibers may be used.

As shown in FIG. 3, reversing devices 17 are provided at both ends of the return side 16b of the transport belt 16 in the moving direction X2. The reversing device 17 is a device that reverses the transport surface 24a (see FIG. 4) and the back surface 24b (see FIG. 4) on the return side 16b. In the present embodiment, inversion devices 17 are provided on the upstream side and the downstream side of the plurality of belt support devices 20 in the moving direction X2 of the return side 16b, respectively. Therefore, the return side 16b passes through the plurality of belt support devices 20 with the transport surface 24a facing upward and the back surface 24b facing downward. Since various known reversing devices can be used as the reversing device 17, detailed description of the configuration of the reversing device 17 itself will be omitted.

As shown in FIG. 3, the linear member 18 is provided so as to extend along the transport belt 16 above the transport belt 16. As the linear member 18, for example, various ropes such as a wire rope and a fiber rope can be used.

In the present embodiment, both ends of the linear member 18 are supported by a pair of belt support devices 20 arranged at both ends in the moving direction of the transport belt 16 (methods indicated by arrows X1 and X2) among the plurality of belt support devices 20. The other plurality of belt support devices 20 are suspended from the linear member 18. One of the pair of belt support devices 20 that support the linear member 18 is installed on the ground on the point P1 side, and the other is installed on the ground on the point P2 side. Although detailed description will be omitted, both ends of the linear member 18 may be supported by other members such as columns instead of the belt support device 20.

The plurality of belt support devices 20 are arranged at intervals from each other in the moving direction of the transport belt 16. As shown in FIG. 4, each belt support device 20 includes a frame body 30, first support rollers 32a and 32b, carrier rollers 34a and 34b, second support rollers 36a and 36b, and return rollers 38a and 38b. have. In FIG. 4, the center of rotation (rotation axis) of each roller is indicated by a chain line.

Inside the frame 30, a first space 30a for passing the carrier side 16a of the transport belt 16 and a second space 30b for passing the return side 16b of the transport belt 16 are formed. In the present embodiment, the frame body 30 is fixed to the first frame portion 40 forming the first space 30a and the first frame portion 40 so as to form the second space 30b below the first frame portion 40. It has a second frame portion 42.

A through hole 40a for passing the linear member 18 is formed in the central portion of the upper portion of the first frame portion 40. In the present embodiment, the belt support device 20 is suspended from the linear member 18 by passing the linear member 18 through the through hole 40a.

The first support rollers 32a and 32b and the carrier rollers 34a and 34b are provided inside the first frame portion 40 so as to be supported by the first frame portion 40, respectively. In the present embodiment, the first support rollers 32a and 32b and the carrier rollers 34a and 34b are rotatably supported by the first frame portion 40 via the support members, respectively.

The first support rollers 32a and 32b support both ends 26a and 26b of the carrier side 16a from the back surface 24b side so that the carrier side 16a of the transport belt 16 has a bag-like cross section. In the present embodiment, the carrier side 16a is supported by the first support rollers 32a and 32b so that both end portions 26a and 26b have a substantially U-shaped cross section separated from each other. The first support rollers 32a and 32b sandwich the carrier side 16a from the outside in the width direction of the transport belt 16 so as to support both end portions 26a and 26b of the carrier side 16a from below. The carrier rollers 34a and 34b support the carrier side 16a from below below the first support rollers 32a and 32b.

In the present embodiment, both ends 26a and 26b are pressed against the first support rollers 32a and 32b by the restoring force generated by bending the carrier side 16a into a U shape. As a result, it is possible to prevent both end portions 26a and 26b from falling off from the first support rollers 32a and 32b. Although detailed description will be omitted, in order to more reliably prevent the both end portions 26a and 26b from falling off from the first support rollers 32a and 32b, members may be provided to close the gaps between the both end portions 26a and 26b. .. Further, a roller may be provided in the gap between both end portions 26a and 26b, and both end portions 26a and 26b may be sandwiched between the roller and the first support rollers 32a and 32b.

In the present specification, when the carrier side has a bag-shaped cross section, the carrier side is curved so that both ends are located at the upper end and the center portion is located at the lower end in the cross section orthogonal to the moving direction of the carrier side. Means that. Therefore, the carrier side 16a may be supported by the first support rollers 32a and 32b so that, for example, both end portions 26a and 26b are in contact with each other (so that the cross section is annular). In this case, as compared with the case where the carrier side 16a is deformed into a U shape, it is possible to easily prevent both end portions 26a and 26b from falling off from the first support rollers 32a and 32b. In order to convey a large amount of the conveyed object 8, the carrier side 16a is preferably supported by the first support rollers 32a and 32b so as to have a substantially U-shaped cross section.

The second support rollers 36a and 36b and the return rollers 38a and 38b are provided inside the second frame portion 42 so as to be supported by the second frame portion 42, respectively. In the present embodiment, the second support rollers 36a and 36b and the return rollers 38a and 38b are rotatably supported by the second frame portion 42 via the support members, respectively.

The second support rollers 36a and 36b support both ends 26a and 26b of the return side 16b from the back surface 24b side so that the return side 16b of the transport belt 16 has a U-shaped cross section below the carrier side 16a. More specifically, the second support rollers 36a and 36b sandwich the return side 16b from the outside in the width direction of the transport belt 16 so as to support both end portions 26a and 26b of the return side 16b from below. The return rollers 38a and 38b support the return side 16b from below below the second support rollers 36a and 36b.

As described above, in the present embodiment, in the belt support device 20, the first support rollers 32a and 32b support both ends 26a and 26b of the carrier side 16a, and below the first support rollers 32a and 32b. Carrier rollers 34a and 34b support the carrier side 16a from below. Therefore, when the carrier side 16a passes through the belt support device 20 with the conveyed object 8 housed inside, the load of the conveyed object 8 can be received by the carrier rollers 34a and 34b. As a result, it is possible to prevent a large force from acting between both end portions 26a, 26b of the carrier side 16a and the first support rollers 32a, 32b, and it is possible to prevent a large force from acting on the wire ropes 28a, 28b. Therefore, it is possible to prevent the wire ropes 28a and 28b from being stretched. Further, since the elongation of each of the wire ropes 28a and 28b can be suppressed, it is possible to prevent a large difference in the elongation amount between the wire rope 28a and the wire rope 28b. As a result, stable operation of the belt conveyor 10 becomes possible.

Further, in the present embodiment, the second support rollers 36a and 36b support both ends 26a and 26b of the return side 16b so that the return side 16b has a U-shaped cross section. By deforming the carrier side 16a into a bag shape and the return side 16b into a U shape in this way, the width direction of the belt support device 20 (the direction orthogonal to the moving direction of the transport belt 16 when viewed from above). ) Can be reduced. As a result, the belt support device 20 can be miniaturized.

Further, in the present embodiment, as shown in FIG. 4, in the second support rollers 36a and 36b, the lower portion of the first frame portion 40 is located inside the return side 16b when viewed from the moving direction of the transport belt 16. In addition, the return side 16b is supported. As a result, the vertical dimension of the belt support device 20 can be reduced. In particular, in the present embodiment, as shown in FIG. 4, in the belt support device 20, the transport belt 16 is supported so that the lower end of the carrier side 16a is located below the upper end of the return side 16b. As a result, the vertical dimension of the belt support device 20 can be sufficiently reduced.

Further, in the present embodiment, the return side 16b passes through the belt support device 20 after being reversed by the reversing device 17. In other words, when the return side 16b passes through the belt support device 20, the transport surface 24a faces upward. As a result, when the return side 16b passes through the plurality of belt support devices 20, it is possible to prevent the transported object 8 adhering to the transport surface 24a from falling. In particular, in the present embodiment, since the return side 16b passes through the plurality of belt support devices 20 in a U-shaped deformed state, it is possible to sufficiently prevent the conveyed object 8 from falling from the conveyed surface 24a.

Further, in the present embodiment, as shown in FIG. 4, in the second support rollers 36a and 36b, both ends 26a and 26b of the return side 16b are the both ends 26a of the carrier side 16a when viewed from the moving direction of the transport belt 16. , The return side 16b is supported so as to be located outside the 26b. In this case, even if the transported object 8 falls from the carrier side 16a, the transported object 8 can be received on the transport surface 24a on the return side 16b. As a result, it is possible to prevent the conveyed object 8 from falling from the conveyed belt 16 and prevent the conveyed object 8 from adhering to the back surface 24b.

In the above-described embodiment, the carrier side 16a is supported from below by a pair of carrier rollers 34a and 34b, but the number of carrier rollers included in the belt support device is not limited to the above-mentioned example. For example, the portion of the carrier side 16a accommodating the conveyed object 8 (the central portion in the width direction of the carrier side 16a) may be supported by three or more carrier rollers, or may be supported by one carrier roller.

Further, although detailed description is omitted, the number of return rollers included in the belt support device is not limited to the above example, and the number of return rollers included in the belt support device may be one or three or more. It may be.

Further, in the above-described embodiment, the belt support device 20 used in the belt conveyor 10 provided with the reversing device 17 has been described, but the belt supporting device according to the present invention may also be used in the belt conveyor not provided with the reversing device. it can. FIG. 5 is a diagram showing a belt support device used in a belt conveyor not provided with a reversing device.

The belt support device 50 shown in FIG. 5 is different from the above-mentioned belt support device 20 in that the frame body 60 is provided instead of the frame body 30, and the second support roller instead of the second support rollers 36a and 36b. The points where 62a and 62b are provided, and the points where the return rollers 38a and 38b support the transport surface 24a on the return side 16b from below.

The second support rollers 62a and 62b are rotatably supported by the frame body 60 around a rotation axis extending in the vertical direction. In the present embodiment, the second support rollers 62a and 62b support both ends 26a and 26b of the return side 16b from the transfer surface 24a side so that the return side 16b of the transfer belt 16 has a bag-like cross section. In the present embodiment, the diameter of the lower portion of each of the second support rollers 62a and 62b is larger than the diameter of the upper portion. As a result, both ends 26a and 26b of the return side 16b of the transport belt 16 can be sufficiently prevented from falling out from between the second support rollers 62a and 62b.

Also in the belt support device 50 according to the present embodiment, the first support rollers 32a and 32b support both ends 26a and 26b of the carrier side 16a, and the carrier rollers 34a and 32b are below the first support rollers 32a and 32b. 34b supports the carrier side 16a from below. As a result, similarly to the belt support device 20 described above, it is possible to prevent a large force from acting between both end portions 26a and 26b of the carrier side 16a and the first support rollers 32a and 32b, and the wire ropes 28a and 28b can be prevented from acting. It is possible to suppress the occurrence of elongation.

Further, also in the belt support device 50 according to the present embodiment, the second support rollers 62a and 62b support both ends 26a and 26b of the return side 16b so that the return side 16b has a U-shaped cross section. As a result, the width direction of the belt support device 50 can be reduced in the same manner as the belt support device 20 described above.

As in the belt support device 50a shown in FIG. 6, instead of the second support rollers 62a and 62b (see FIG. 5), a columnar column rotatably supported by the frame body 60 around a rotation axis extending in the vertical direction. Second support rollers 62c and 62d can be used. The second support rollers 62c and 62d support both ends 26a and 26b of the return side 16b from the transfer surface 24a side so that the return side 16b of the transfer belt 16 has a bag-like cross section. In the present embodiment, the positions of the second support rollers 62c and 62d in the vertical direction are different from each other. The second support rollers 62c and 62d support both end portions 26a and 26b of the return side 16b from the transport surface 24a side so that the end portions 26a fit below the end portion 26b. The positions of the second support rollers 62c and 62d in the vertical direction may be reversed. In this case, the second support rollers 62c and 62d support both end portions 26a and 26b of the return side 16b so that the end portions 26b fit below the end portions 26a.

According to the present invention, it is possible to suppress the elongation of the wire rope of the conveyor belt of the belt conveyor.

10 Belt conveyor 12 Head pulley 14 Tail pulley 16 Conveyor belt 16a Carrier side 16b Return side 18 Linear member 20 Belt support device 24a Conveyor surface 24b Back surface 26a, 26b Conveyor belt end 28a, 28b Wire rope 30, 60 Frame 30a No. 1 space 30b 2nd space 32a, 32b 1st support roller 34a, 34b Carrier roller 36a, 36b, 62a, 62b, 62c, 62d 2nd support roller 38a, 38b Return roller 40 1st frame 42 2nd frame

Claims (6)

A belt support device for supporting the conveyor belt of a belt conveyor provided with an endless conveyor belt and a pair of ropes embedded at both ends in the width direction of the conveyor belt.
A frame body configured to allow the transport belt to pass through, and
A pair of first support rollers that are supported by the frame and support both ends of the carrier side so that the carrier side of the transport belt has a bag-like cross section.
A belt support device including a carrier roller that is supported by the frame and supports the carrier side from below below the pair of first support rollers. The belt support device according to claim 1, further comprising a pair of second support rollers that are supported by the frame and support both ends of the return side so that the return side of the transport belt has a U-shaped cross section. .. The frame body has a first frame portion that forms a space for passing the carrier side, and a second frame portion that forms a space for passing the return side below the first frame portion.
The pair of first support rollers and the carrier roller are provided inside the first frame portion so as to be supported by the first frame portion.
The pair of second support rollers are provided inside the second frame portion so as to be supported by the second frame portion, and the lower portion of the first frame portion is the said when viewed from the moving direction of the transport belt. The belt support device according to claim 2, wherein the return side is supported so as to be located inside the return side. In the pair of second support rollers, both ends on the return side are outward from both ends on the carrier side so that the transport surface of the transport belt faces upward and when viewed from the moving direction of the transport belt. The belt support device according to claim 3, which supports the return side so as to be located. A pair of pulleys and
An endless transport belt wound around the pair of pulleys,
A pair of ropes buried at both ends in the width direction of the transport belt,
A linear member provided above the transport belt so as to extend along the transport belt, and
The plurality of belt support devices according to any one of claims 1 to 4 suspended from the linear member, and the plurality of belt support devices.
Belt conveyor equipped with. 5. The fifth aspect of the present invention is further provided with a pair of reversing devices provided on the upstream side and the downstream side of the plurality of belt support devices in the moving direction on the return side of the conveying belt and reversing the conveying surface and the back surface of the conveying belt. Belt conveyor described in.

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