Conveying device and conveying method

Abstract

To prevent pre-clipped conveying objects from falling in a conveying device that clips conveying objects between a lower conveyor belt and an upper conveyor belt to convey them upward.SOLUTION: A conveying device 1 of the present invention includes a preparation area P in which, with a lower conveyor belt 23 and an upper conveyor belt 13 facing each other, the curvature states of their respective cross-sections change in the width direction, and an elevating area J where a conveying object 2 is clipped and elevated between the lower conveyor belt 23 and the upper conveyor belt 13 facing each other, and in the preparation area P, there are a first roller 41 that supports the lower ear part 23b of the lower conveyor belt 23 from the upstream side in the conveyance direction of the conveyor device 1 so as to be above the center part of the lower conveyor belt 23, a second roller 42 that supports the upper ear part 13b of the upper conveyor belt 13 so as to be below the center part of the upper conveyor belt 13 and a third roller 43 that supports the lower ear part 23b so as to be above the center part of the lower conveyor belt 23.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a conveying device and a conveying method. [Background technology]

[0002] Traditionally, when transporting coal and other materials from low places to high places, such as from silos to bunkers, using conveying equipment such as belt conveyors, the upward inclination angle of the belt conveyor is limited by the angle of repose of the material being transported. Therefore, the greater the difference in elevation during transport, the longer the transport distance required to lift the material, resulting in the problem of a larger installation area for the conveying equipment. To solve this problem, in recent years, conveying devices have been used that sandwich the object to be conveyed between a lower conveyor belt and an upper conveyor belt and transport it upward (see Patent Document 1). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Patent Application No. 2015-238145 [Overview of the project] [Problems that the invention aims to solve]

[0004] However, with conventional clamp-type conveying systems, a gap may form between the lower and upper conveying belts before the conveyed material is completely clamped between them. If the conveyed material is in the form of pellets, which are more fluid than coal, for example, spillage may occur through this gap.

[0005] The present invention relates to a conveying device and conveying method that transports an object upward by sandwiching it between a lower conveying belt and an upper conveying belt, with the objective of preventing the object from spilling before it is sandwiched. [Means for solving the problem]

[0006] To solve the above problems, the present invention provides a conveying device that clamps an object to be conveyed between a lower conveying belt and an upper conveying belt and conveys the object upward, comprising: a preparation region in which the curvature state in the widthwise cross-section of the lower conveying belt and the upper conveying belt changes when they are facing each other; and an upward region in which the lower conveying belt and the upper conveying belt face each other, clamp the object to be conveyed, and raise the object to be conveyed, wherein in the preparation region, in order from the upstream side in the conveying direction of the conveying device, a first roller that supports the lower ear portion of the lower conveying belt so that it is above the central part of the lower conveying belt; a second roller that supports the upper ear portion of the upper conveying belt so that it is below the central part of the upper conveying belt; and a third roller that supports the lower ear portion of the lower conveying belt so that it is above the central part of the lower conveying belt.

[0007] Preferably, the third roller has a rotating shaft extending substantially horizontally, with a diameter that is largest in the center and decreases towards both ends, and has two barrel-shaped rollers that support the lower ear portion.

[0008] Preferably, the first roller has a cylindrical horizontal roller having a rotation axis extending in a substantially horizontal direction, and two cylindrical trafloras having rotation axes inclined with respect to the rotation axis from both sides of the horizontal roller and supporting the lower lug portion, and the second roller has a cylindrical horizontal roller having a rotation axis extending in a substantially horizontal direction, and two cylindrical trafloras having rotation axes inclined with respect to the rotation axis from both sides of the cylindrical horizontal roller and supporting the upper lug portion.

[0009] In the first roller, it is preferable that the inclination angle of the rotation axis of the traflora with respect to the rotation axis of the horizontal roller is about 18 degrees.

[0010] Furthermore, according to another embodiment of the present invention for solving the above problems, there is a conveying method for conveying an object to be conveyed by clamping it between a lower conveying belt and an upper conveying belt and conveying the object upward, wherein, with the lower conveying belt and the upper conveying belt facing each other, in a preparation region for changing the curvature state in the widthwise cross-section of each, the lower ear portion of the lower conveying belt is supported so as to be above the central portion of the lower conveying belt, the upper ear portion of the upper conveying belt is supported so as to be below the central portion of the upper conveying belt, and the lower ear portion of the lower conveying belt is supported so as to be above the central portion of the lower conveying belt, thereby changing the curvature state in the widthwise cross-section of each, and in the rising region, with the lower conveying belt and the upper conveying belt facing each other, the object to be conveyed is clamped and the object to be conveyed is raised. [Effects of the Invention]

[0011] According to the present invention, in a conveying device and conveying method that transports an object upward by sandwiching it between a lower conveying belt and an upper conveying belt, it is possible to prevent the object from spilling before it is sandwiched. [Brief explanation of the drawing]

[0012] [Figure 1] This is a diagram illustrating the overall configuration of the transport device according to the embodiment. [Figure 2] This is a view of the horizontal rollers positioned in the horizontal area, seen from the width direction. [Figure 3] This is a view of the fourth roller from the width direction. [Figure 4] This is a view of the first roller from the width direction. [Figure 5] This is a view of the second roller from the width direction. [Figure 6] This is a view of the third roller from the width direction. [Figure 7] This is a view of the roller for the lifting area from the width direction. [Figure 8]It is a diagram schematically showing changes in the curved shapes of the upper conveyor belt and the lower conveyor belt at positions a, b, c, d, and e.

Embodiments for Carrying out the Invention

[0013] Hereinafter, embodiments of the present invention will be described. FIG. 1 is a diagram for explaining the overall configuration of the conveying device 1 of the embodiment. The conveying device 1 includes an upper belt conveyor 10 and a lower belt conveyor 20 installed below the upper belt conveyor 10, and is a conveying device 1 that sandwiches an object to be conveyed 2 (not shown in FIG. 1) between the upper belt conveyor 10 and the lower belt conveyor 20 and conveys it upward.

[0014] (Upper Belt Conveyor 10) The upper belt conveyor 10 includes an upper head pulley 11 arranged above, an upper tail pulley 12 arranged below, and an endless upper conveyor belt 13 stretched between the upper head pulley 11 and the upper tail pulley 12.

[0015] The upper conveyor belt 13 has an upper conveying portion 13C that contributes to the conveyance of the object to be conveyed 2 along the conveying direction D from the upper tail pulley 12 toward the upper head pulley 11, and an upper return portion 13R that returns from the upper head pulley 11 to the upper tail pulley 12 in the opposite direction to the upper conveying portion 13C above the upper conveying portion 13C. An upper drive pulley 14 that applies a driving force to the upper conveyor belt 13 is provided in the middle of the upper return portion 13R.

[0016] (Lower Belt Conveyor 20) The lower belt conveyor 20 is arranged below the upper belt conveyor 10, and the upstream side extends further than the upper belt conveyor 10. The lower belt conveyor 20 includes a lower head pulley 21 arranged above, a lower tail pulley 22 arranged below, and an endless lower conveyor belt 23 stretched between the lower head pulley 21 and the lower tail pulley 22.

[0017] The lower conveyor belt 23 has a lower conveying section 23C that contributes to the conveying of the object to be conveyed 2 along the conveying direction D from the lower tail pulley 22 to the lower head pulley 21, and a lower return section 23R that returns from the lower head pulley 21 to the lower tail pulley 22 in the opposite direction to the lower conveying section 23C below the lower conveying section 23C. A lower drive pulley 24 is provided in the middle of the lower return section 23R to provide driving force to the lower conveyor belt 23.

[0018] The conveying device 1 has a horizontal region H in which the object to be conveyed 2 is placed on the lower conveying belt 23 and conveyed substantially horizontally without being covered by the upper conveying belt 13; a preparation region P in which the lower conveying belt 23 and the upper conveying belt 13 face each other but the object to be conveyed 2 has not yet started to rise; and an upward region J in which the lower conveying belt 23 and the upper conveying belt 13 face each other and grasp the object to be conveyed 2 as it rises.

[0019] The lower conveyor belt 23 is stretched longitudinally between the lower head pulley 21 and the lower tail pulley 22, and tension is applied to it. The upper conveyor belt 13 is stretched longitudinally between the upper head pulley 11 and the upper tail pulley 12, and tension is applied to it.

[0020] In the upward region J, this tension causes the lower conveyor belt 23 and the upper conveyor belt 13 to be in close contact with each other, and the lower conveyor belt 23 and the upper conveyor belt 13 sandwich and wrap around the object to be conveyed 2, so that the object to be conveyed 2 is transported upward without spillage.

[0021] (horizontal area H) The horizontal region H is the area between the lower tail pulley 22 of the lower conveyor belt 23 and the upper tail pulley 12 of the upper conveyor belt 13, and the upper conveyor belt 13 is not positioned there. The object to be conveyed 2 is placed on the lower conveyor belt 23 on the side of the lower tail pulley 22 of the lower conveyor belt 23 and is conveyed approximately horizontally without being covered by the upper conveyor belt 13.

[0022] (Roller 31 for horizontal area) Figure 2 shows the horizontal roller 31 positioned in the horizontal region H, viewed from the conveying direction D in the width direction W perpendicular to the conveying direction D. The left side of the figure shows the state without the conveyed object 2, and the right side shows the state with the conveyed object 2. The horizontal roller 31 supports the lower conveying section 23C of the lower conveying belt 23 from the lower surface which is inside the loop of the lower conveying belt 23.

[0023] The horizontal roller 31 has a horizontal axis along the width direction W as its axis of rotation, and is a cylindrical horizontal roller 31M that supports the lower central part 23a, which is the center of the lower conveyor belt 23 in the width direction W, and is continuous from both ends of the axis of rotation of the horizontal roller 31M, with a predetermined trough angle α relative to the horizontal axis. 31 It comprises two cylindrical trough floras 31A, each having an inclined rotation axis and supporting the lower ear portions 23b, which are the ends of the lower conveyor belt 23 in the width direction W. In this embodiment, the lower ear portion 23b refers to the portions on both sides when the lower conveyor belt 23 is divided into approximately three equal parts, and the lower central portion 23a refers to the central portion when the lower conveyor belt 23 is divided into approximately three equal parts.

[0024] In this specification, the angle of inclination of the rotation axis of the trough roller with respect to the rotation axis of the horizontal roller is referred to as the trough angle in various types of rollers.

[0025] Furthermore, two skirt portions 32 are provided above the horizontal roller 31 to hold down both sides of the conveyed object 2 in the width direction W. The lower conveying belt 23 is inserted between the horizontal roller 31 and the skirt portions 32.

[0026] On the upstream side of the horizontal region H, near the lower tail pulley 22, the object to be conveyed 2 is loaded onto the lower conveyor belt 23. At this time, the lower conveyor belt 23 is supported by the horizontal region roller 31 and held in an upward-opening U-shape, and is further provided with two skirt portions 32 that hold down both sides of the object to be conveyed 2 in the width direction W. Therefore, the object to be conveyed 2 loaded onto the lower conveyor belt 23 is conveyed without collapsing in the width direction W.

[0027] (Preparation area P) In the preparation area P located downstream of the horizontal area H, the upper conveyor belt 13 is positioned above the lower conveyor belt 23, but the object to be conveyed 2 has not yet begun to rise. The lower conveyor belt 23 and the upper conveyor belt 13 change their curvature as they move from upstream to downstream, and this area is in preparation for gripping the object to be conveyed 2 between them. The curvature is a U-shaped curve, and can also be expressed by the gentleness (or tightness) of the U-shaped curve, or by the distance between the widthwise ends of the lower conveyor belt 23 and the upper conveyor belt 13. A gentle U-shaped curve means that the distance between the widthwise ends of each belt is long, and a tight U-shaped curve means that the distance between the widthwise ends of each belt is short.

[0028] The preparation area P is equipped with a fourth roller 44 that supports the lower conveyor belt 23 from the lower surface which is inside the loop of the lower conveyor belt 23, a first roller 41, and a third roller 43. Furthermore, a second roller 42 is positioned to press down on the upper conveyor belt 13 from the upper surface, which is inside the loop of the upper conveyor belt 13. These rollers are arranged in the following order from the upstream side: the fourth roller 44, the first roller 41, the second roller 42, and the third roller 43. Furthermore, the preparation area P has a distance sufficient to allow these rollers to be positioned and the curvature of the lower conveyor belt 23 and the upper conveyor belt 13 to be changed without excessive load, as described later. In this embodiment, three rollers are arranged: a fourth roller 44, a first roller 41, and a third roller 43. However, more than one roller may be arranged.

[0029] (4th Roller 44) Figure 3 shows the fourth roller 44, located at the upstream end of the preparation area P, viewed from the conveying direction D in the width direction W. The left side of the figure shows the state without the conveyed object 2, and the right side shows the state with the conveyed object 2. The fourth roller 44 supports the lower conveying section 23C of the lower conveying belt 23 from the lower surface which is inside the loop of the lower conveying belt 23.

[0030] The fourth roller 44 has a horizontal axis along the width direction W as its axis of rotation, and is a cylindrical horizontal roller 44M that supports the lower central part 23a of the lower conveyor belt 23, and is continuous from both ends of the axis of rotation of the horizontal roller 44M and has a trough angle α with respect to the horizontal axis. 44 It comprises two cylindrical trough floras 44A that have an inclined rotation axis and support the lower ear portion 23b of the lower conveyor belt 23. 44 It is approximately 23 degrees. Furthermore, above the fourth roller 44, two skirt portions 32 extend continuously from the horizontal region H, pressing down on both sides of the conveyed object 2 in the width direction W. These skirt portions 32 gradually decrease in height from the horizontal region H and end at the position of the fourth roller 44.

[0031] (First Roller 41) Figure 4 shows the first roller 41, positioned downstream of the fourth roller 44 in the horizontal region H, viewed from the conveying direction D in the width direction W. The left side of the figure shows the state without the conveyed object 2, and the right side shows the state with the conveyed object 2. The first roller 41 supports the lower conveying section 23C of the lower conveying belt 23 from the lower surface which is inside the loop of the lower conveying belt 23.

[0032] The first roller 41 has a horizontal axis along the width direction W as its axis of rotation, and is a cylindrical horizontal roller 41M that supports the lower central part 23a of the lower conveyor belt 23, and is continuous from both ends of the axis of rotation of the horizontal roller 41M and has a trough angle α with respect to the horizontal axis. 41 It comprises two cylindrical trough floras 41A that have an inclined rotation axis and support the lower ear portion 23b of the lower conveyor belt 23. 41 It is approximately 18 degrees. That is, the trough angle α of the first roller 41 41 The angle is 18 degrees, and the trough angle α of the fourth roller 44 44 It is less than 23 degrees.

[0033] (2nd Roller 42) FIG. 5 is a view of the second roller 42 disposed on the downstream side of the first roller 41 in the horizontal region H, as seen in the width direction W from the conveying direction D. The left side in the figure shows the state where the conveyed object 2 does not exist, and the right side in the figure shows the state where the conveyed object 2 exists. The second roller 42 supports the upper conveying portion 13C of the upper conveying belt 13 from the upper surface that becomes the inside of the loop of the upper conveying belt 13.

[0034] The second roller 42 has a horizontal axis along the width direction W as a rotation axis, and includes a columnar horizontal roller 42M that supports the upper central portion 13a of the upper conveying belt 13, and continuous from both ends of the rotation axis of the horizontal roller 42M and with respect to the horizontal axis, with a trough angle of α 42 It has inclined rotation axes and includes two columnar trough rollers 42A that support the upper ear portions 13b of the upper conveying belt 13. In the embodiment, α 42 is about 20 degrees. In the embodiment, the upper ear portions 13b are the two side portions when the upper conveying belt 13 is divided into approximately three equal parts, and the upper central portion 13a is the central portion when the upper conveying belt 13 is divided into approximately three equal parts.

[0035] (The third roller 43) FIG. 6 is a view of the third roller 43 disposed on the downstream side of the second roller 42 in the horizontal region H, as seen in the width direction W from the conveying direction D. The left side in the figure shows the state where the conveyed object 2 does not exist, and the right side in the figure shows the state where the conveyed object 2 exists. The third roller 43 supports the lower conveying portion 23C of the lower conveying belt 23 from the lower surface that becomes the inside of the loop of the lower conveying belt 23.

[0036] The third roller 43 has a horizontal axis along the width direction W as a rotation axis and includes two rollers 43B that support the lower ear portions 23b of the lower conveying belt 23. The two rollers 43B are each of the same shape and have a barrel shape in which the diameter of the central portion is larger than that of both ends in the rotation axis direction as shown in FIG. 6.

[0037] (The ascending region J) The lifting region J, located downstream of the preparation region P, is a region where the lower conveyor belt 23 and the upper conveyor belt 13 face each other, gripping the object to be conveyed 2 and lifting it. In the upward region J, multiple rollers 51 for the upward region are arranged at approximately equal intervals to press down on the upper conveyor belt 13 from the upper surface that is inside the loop of the upper conveyor belt 13.

[0038] Figure 7 shows the roller 51 for the lifting region, positioned in the lifting region J, viewed from the conveying direction D in the width direction W. The left side of the figure shows the state without the conveyed object 2, and the right side shows the state with the conveyed object 2 present. The roller 51 for the lifting area supports the upper conveying section 13C of the upper conveying belt 13 from the upper surface inside the loop of the upper conveying belt 13. The roller 51 for the lifting area has a horizontal axis along the width direction W as its axis of rotation, and is a cylindrical horizontal roller 51M that supports the upper central part 13a of the upper conveyor belt 13, and is continuous from both ends of the axis of rotation of the horizontal roller 42M and has a trough angle of α with respect to the horizontal axis. 51 It comprises two cylindrical trough flora 51A that have an inclined rotation axis and support the upper ear portion 13b of the upper conveyor belt 13. 51 It is approximately 26.5 degrees.

[0039] The fourth roller 44, the first roller 41, and the third roller 43 are arranged at approximately equal intervals. The second roller 42 is positioned approximately midway between the first roller 41 and the third roller 43. The first of the lifting rollers 51 is positioned at a distance approximately equal to the distance between the first roller 41 and the third roller 43, away from the third roller 43, and multiple rollers are arranged consecutively from there.

[0040] Figure 8 schematically shows the change in the curvature of the upper conveyor belt 13 and the lower conveyor belt 23 at positions a, b, c, d, and e shown in Figure 1 in the preparation area P and the rising area J. In the figure, the curvature of the upper conveyor belt 13 and the lower conveyor belt 23 is exaggerated compared to the actual degree of curvature. The top of the figure shows this embodiment, and the bottom shows a comparative embodiment. In this embodiment, a fourth roller 44, a first roller 41, a second roller 42, a third roller 43, and a roller for the lifting region 51 are arranged. In the comparative embodiment, the fourth roller 44 and the roller for the lifting region 51 are arranged, but the first roller 41, the second roller 42, and the third roller 43 are not.

[0041] In the embodiment and comparative embodiment, since the fourth roller 44 and the roller 51 for the lifting region are arranged, the curvature of the upper conveyor belt 13 and the lower conveyor belt 23 is the same at positions a and e. At position a, the upper conveyor belt 13 is in a nearly horizontal state immediately after being changed direction at the upper tail pulley 12, and at position e, it is in a downward U-shape along the roller 51 for the lifting area. The lower conveyor belt 23 has an upward U-shape along the fourth roller 44 at position a, and a gently curving downward U-shape at position e.

[0042] In positions b, c, and d, in both the embodiment and the comparative form, the upper conveyor belt 13 changes from a nearly horizontal state at position a to a downward U-shape along the roller 51 for the rising region at position e. However, the intermediate shape of this change differs between the embodiment and the comparative form. The lower conveyor belt 23 changes from an upward U-shape along the fourth roller 44 at position a to a gently curving downward U-shape at position e. However, the shape during this change differs from that of the embodiment and the comparative form.

[0043] In other words, in the comparative configuration, the lower conveyor belt 23 is approximately horizontal at positions c and d. In this case, if the conveyed object 2 is prone to collapse, such as pellets, it tends to spread out laterally on the lower conveyor belt 23. The upper conveyor belt 13 gradually changes from a nearly horizontal state at position a to a downward U-shape along the roller 51 for the upward region at position e. However, when the lower conveyor belt 23 is nearly horizontal at positions c and d, the upper conveyor belt 13 is not sufficiently curved and does not cover both sides of the lower conveyor belt 23 in the width direction W. Therefore, spillage occurs through the gap between the upper conveyor belt 13 and the lower conveyor belt 23.

[0044] However, in this embodiment, a first roller 41 is provided at position b with respect to the lower conveyor belt 23, and a third roller 43 is provided at position d. As a result, at position b, the lower conveyor belt 23 follows the shape of the first roller 41, allowing the U-shaped curve to be tighter than in the comparative configuration. Although there are no rollers supporting the lower conveyor belt 23 at position c, the lower conveyor belt 23 maintains a slight U-shape even at position c due to the influence of the first roller 41. Then, at position d, the lower conveyor belt 23 is held by the barrel-shaped roller of the third roller 43 such that the lower central portion 23a is at the bottom, it rises as it moves from the lower central portion 23a towards the lower edge portion 23b, and then slopes downward from the middle of the lower edge portion 23b towards the end.

[0045] Furthermore, in this embodiment, since the upper conveyor belt 13 conforms to the shape of the second roller 42 at position c, it is possible to create a more pronounced U-shape than in the comparative embodiment. As a result, in this embodiment, at position c, the upper lug portion 13b of the upper conveyor belt 13 curves downward and the lower lug portion 23b of the lower conveyor belt 23 curves upward compared to the comparative form. This allows the lugs of the upper conveyor belt 13 and the lower conveyor belt 23 to be in closer contact with each other, making it less likely for the conveyed material 2 to spill, even if it is a pellet-like material that is prone to collapse.

[0046] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications are possible. [Explanation of Symbols]

[0047] D Conveying direction H horizontal area J Upward Region P preparation area 1. Conveying device 2. Items to be transported 10 Upper belt conveyor 13 Upper conveyor belt 13C Upper conveying section 13a Upper center part 13b Upper ear 14 Upper drive pulley 20 Lower belt conveyor 23 Lower conveyor belt 23C Lower transport section 23a Lower center part 23b Lower ear 24 Lower drive pulley 41 First Laura 41A Traflora 41M Horizontal Roller 42. Second Laura 42A Traflora 42M Horizontal Roller 43. Third Laura 43B Laura 44. Fourth Laura 44A Traflora 44M Horizontal Roller

Claims

1. A conveying device that holds an object to be conveyed between a lower conveying belt and an upper conveying belt and conveys the object upward, The lower conveyor belt and the upper conveyor belt are facing each other, and the system includes a preparation region in which the curvature of the cross-section in the width direction of each changes, and an upward region in which the lower conveyor belt and the upper conveyor belt face each other to grip the object to be conveyed and raise the object to be conveyed. In the preparation area, starting from the upstream side in the conveying direction of the conveying device, A first roller supports the lower ear portion of the lower conveyor belt so that it is above the central portion of the lower conveyor belt, A second roller supports the upper ear portion of the upper conveyor belt so that it is located below the central portion of the upper conveyor belt, A third roller supports the lower edge portion of the lower conveyor belt so that it is above the central portion of the lower conveyor belt, A conveying device equipped with the following features.

2. The third roller has a rotating shaft extending substantially horizontally, with a diameter that is largest in the center and decreases towards both ends, and has two barrel-shaped rollers that support the lower ear portion. The conveying device according to claim 1.

3. The first roller is A cylindrical horizontal roller having a rotating shaft extending in a nearly horizontal direction, The horizontal roller has two cylindrical trough floras on both sides, each having a rotation axis inclined with respect to the rotation axis and supporting the lower ear portion. The second roller is, A cylindrical horizontal roller having a rotating shaft extending in a nearly horizontal direction, It has two cylindrical trough floras that have rotation axes inclined with respect to the rotation axis on both sides of a cylindrical horizontal roller and support the upper lug portion, The conveying device according to claim 1 or 2.

4. In the first roller, the inclination angle of the rotation axis of the traflora with respect to the rotation axis of the horizontal roller is approximately 18 degrees. The conveying device according to claim 3.

5. A conveying method in which an object to be conveyed is held between a lower conveying belt and an upper conveying belt, and the object to be conveyed is conveyed upward, With the lower conveyor belt and the upper conveyor belt facing each other, in the preparation area for changing the curvature state in the widthwise cross-section of each, The lower ear portion of the lower conveyor belt is supported so that it is above the central portion of the lower conveyor belt. The upper ear portion of the upper conveyor belt is supported so that it is below the central portion of the upper conveyor belt. By supporting the lower ear portion of the lower conveyor belt so that it is above the central portion of the lower conveyor belt, the curvature state in each widthwise cross-section is changed. In the lifting region, with the lower conveyor belt and the upper conveyor belt facing each other, the conveyed object is gripped and lifted. Method of transport.

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