JP5934596B2 - Belt conveyor apparatus and method for conveying an object to be conveyed - Google Patents

Description

  The present invention relates to a belt conveyor device, and more particularly, to a belt conveyor device that conveys earth and sand generated by excavation in construction for constructing an underground tank or the like.

  In the construction of underground tanks such as LNG (Liquefied Natural Gas) storage tanks and sewage tanks underground, earth and sand are generated due to underground excavation. Therefore, equipment for transporting objects to be transported such as earth and sand generated by excavation from the excavation site where excavation is performed to the ground surface is necessary.

  A belt conveyor device that transports a transported object between a transport belt and a presser belt is known as a device for transporting a transported object between points with a difference in height, such as between an underground excavation site and the ground. (For example, refer to Patent Document 1). In this belt conveyor device, an idler is disposed between the lower curve roller and the upper curve roller so that the conveyance belt and the presser belt are parallel to each other and the transfer belt and the presser belt meander. Adjacent idlers push the conveyor belt and presser belt in opposite directions, generate tension on the conveyor belt and presser belt, and sandwich the object to be transported between the conveyor belt and presser belt, either vertically or vertically. It is possible to transport the object to be transported on a steep slope close to.

  Here, in underground excavation work, the depth of the excavation site from the ground increases with the progress of the work, and accordingly, the conveyance distance in the vertical direction of the object to be conveyed also increases. Therefore, the belt conveyor device for transporting the transported object needs to be able to follow the increase in the transport distance in the vertical direction of the transported object.

  As a belt conveyor device capable of responding to an increase in the conveyance distance in the vertical direction of the object to be conveyed, a conveyor device that forms a double conveyor by a pair of belts facing each other and sandwiches and conveys the object to be conveyed by the double conveyor And what changed the inclination-angle of the double conveyor part is known (for example, refer patent document 2). In this conveyor apparatus, a conveyor boom is pivotally supported on a conveyor support so that it can be raised and lowered, and a portion of the conveyor boom is a double conveyor. And this conveyor apparatus is used in the state which fixed the conveyor boom with the inclination which can obtain a predetermined lift. Further, a cap-shaped frame having a circular arc on the lower side is provided near the base end portion of the conveyor boom, and the cap-shaped frame and a pulley provided on the cap-shaped frame can be moved according to the inclination angle of the conveyor boom. .

Japanese Patent Laid-Open No. 62-275906 JP-A-8-165209

  However, since the conveyor apparatus described in Patent Document 2 uses a cap-shaped frame in the vicinity of the base end portion of the conveyor boom, the inclination angle of the conveyor boom cannot be increased, and the vertical direction of the object to be conveyed is When the inclination angle of the conveyor boom is changed according to the conveyance distance, it cannot be said that the object to be conveyed can be reliably sandwiched between the double conveyors regardless of the inclination angle of the conveyor boom.

  Then, the subject of this invention is providing the belt conveyor apparatus which can load a to-be-conveyed object reliably irrespective of the conveyance distance of the perpendicular direction of a to-be-conveyed object.

  The belt conveyor device according to the present invention that has solved the above problems includes a first belt and a second belt facing each other, a plurality of first carrier rollers that press the first belt in a direction intersecting the surface of the first belt, A plurality of second carrier rollers that press the second belt in a direction intersecting the surface of the second belt, and conveys the object to be conveyed between the first belt and the second belt from the lower position to the upper position. A belt conveyor device comprising a frame member rotatably supporting each of a plurality of first carrier rollers and a plurality of second carrier rollers, wherein the frame member is a lower part disposed at a loading position of a conveyed object at a lower position. A horizontal frame and an inclined frame that can swing around a substantially horizontal axis set at an upper position and lifts the object to be transported loaded on the lower horizontal frame. The first belt at the loading position is a curved surface that protrudes toward the second belt, and the second belt at the loading position is disposed along the tangential direction with respect to the first belt. When the inclination angle in the inclined frame is changed, the second belt is arranged to be arranged along the tangential direction with respect to the first belt, and the lower horizontal frame is It is possible to move in the horizontal direction.

  In the belt conveyor apparatus according to the present invention, the frame member has an inclined frame that can swing around a substantially horizontal axis set at an upper position. In addition, the first belt in the loading position is a curved surface that is convex toward the second belt side, and the second belt in the loading position is relative to the first belt when the inclination angle in the inclined frame is changed. The state of being arranged along the tangential direction is maintained. The lower horizontal frame is movable in the horizontal direction with respect to the inclined frame. For this reason, when the inclination angle of the inclined frame is changed, the second horizontal belt is arranged in a tangential direction with respect to the first belt at the loading position by moving the lower horizontal frame following the change of the inclination angle of the inclined frame. Thus, the conveyed object can be securely sandwiched between the first belt and the second belt even when the inclination angle of the inclined frame is changed. As a result, the object to be conveyed can be reliably loaded on the belt conveyor device regardless of the vertical conveyance distance of the object to be conveyed.

  Here, the curved surface can form an arc having an arc angle larger than the movable range angle of the tilt angle of the tilt frame in a side view.

  As described above, when the curved surface has an arc having a larger arc angle than the movable range angle of the tilt angle of the tilt frame in a side view, when the tilt angle of the tilt frame is changed to any angle within the movable range. In addition, the state in which the second belt is disposed in the tangential direction with respect to the first belt in the loading position can be maintained. Therefore, it is possible to more reliably load the object to be conveyed onto the belt conveyor device.

  In addition, the second belt can form a slope surface connected to the loading position, and the inclination angle of the slope surface with respect to the horizontal plane can be 13 ° or less.

  In this way, the second belt forms a slope surface connected to the loading position, and the inclined angle of the slope surface with respect to the horizontal plane is set to 13 ° or less, so that the object to be conveyed is placed on the second belt. It can be transported from the slope surface to the loading position without sliding down. Therefore, the object to be conveyed can be more reliably loaded on the belt conveyor device.

  Further, the inclined frame has a main frame and an end frame that is rotatably connected to the main frame at an end portion on the lower position side of the main frame, and the main frame and the end frame can be expanded and contracted. It can be made to be connected by a simple tilt angle setting beam.

  As described above, the inclined frame is configured to include the main frame and the end frame that is rotatably connected to the main frame at the end on the lower position side of the main frame. Are connected by a tilt angle setting beam that can be expanded and contracted, the tilt angle setting beam is expanded and contracted to adjust the angle of the end frame with respect to the main frame according to the tilt angle of the tilt frame, and the angle of the end frame is lowered The loading position of the conveyed object between the first belt and the second belt can be adjusted along the horizontal frame. Therefore, it becomes possible to more reliably load the conveyed object onto the belt conveyor regardless of the inclination angle of the inclined frame.

  Moreover, the ground frame mounted on the ground surface is provided, and the inclined frame can be connected to the ground frame so as to be rotatable around the erection pin at an upper position via the erection pin.

  In this way, by placing the ground frame on the ground surface and connecting the inclined frame to the ground frame via the erection pin so as to be rotatable around the erection pin, the inclination frame is moved around the erection pin. The tilted frame and the lower horizontal frame connected to the tilted frame can be levitated from the substantially horizontal plane on which the lower horizontal frame is placed. For this reason, when excavation is advanced below the lower horizontal frame as the construction progresses, the lower horizontal frame can be retreated to a place that does not hinder excavation, and the excavation work can be performed efficiently.

  According to this invention, a to-be-conveyed object can be reliably loaded irrespective of the conveyance distance of the perpendicular direction of a to-be-conveyed object.

It is a perspective view of the belt conveyor apparatus which concerns on embodiment of this invention. It is a side view of a belt conveyor apparatus. It is a principal part enlarged side view of a belt conveyor apparatus. It is a perspective view of the belt conveyor apparatus at the time of changing an inclination angle. It is a side view of the belt conveyor apparatus at the time of changing an inclination angle. It is a principal part enlarged side view of the belt conveyor apparatus at the time of changing an inclination angle.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In each embodiment, portions having the same function are denoted by the same reference numerals, and redundant description may be omitted.

  FIG. 1 is a perspective view of a belt conveyor device 1 according to the present embodiment. The belt conveyor device 1 is a belt conveyor device that is used to transport objects to be transported such as earth and sand generated by excavating underground. The belt conveyor device 1 is arranged at the bottom of an underground space formed by underground excavation work. And the lining board B is provided in the substantially same height as the ground surface so that this underground space may be covered. An opening A is formed in the lining plate B. The belt conveyor device 1 conveys the object to be conveyed from the lower position in the basement to the upper position on the ground through the opening A.

  At the bottom of the underground space, a pre-stage conveyor C1 that conveys the object to be conveyed from a point where the object to be conveyed such as earth and sand is generated by excavation to the loading position of the belt conveyor device 1 is disposed. On the upper surface of the lining plate B, a rear conveyor C2 for conveying the object to be conveyed discharged from the belt conveyor device 1 on the ground is disposed. The rear conveyor C2 conveys the object to be conveyed to the hopper H on the ground, and loads the object to be conveyed on the dump truck D stopped below the hopper H as shown in FIG.

  Next, with reference to FIG.1 and FIG.2, the structure of the belt conveyor apparatus 1 is demonstrated. FIG. 1 is a perspective view of the belt conveyor device 1, and FIG. 2 is a side view of the belt conveyor device 1.

  The belt conveyor device 1 includes a first belt 2 and a second belt 3 that face each other. Each of the first belt 2 and the second belt 3 is a flat belt. The first belt 2 and the second belt 3 convey the object to be conveyed from the lower position to the upper position while sandwiching the object to be conveyed.

  In addition, the belt conveyor device 1 includes a plurality of first carrier rollers 4 and a plurality of second carrier rollers 5. The first carrier roller 4 presses the first belt 2 in a direction intersecting the surface of the first belt 2. The second carrier roller 5 presses the second belt 3 in a direction intersecting the surface of the second belt 3.

  As shown in FIG. 2, the first belt 2 is disposed in the conveyance section from the loading position of the conveyed object at the lower position of the belt conveyor apparatus 1 to the discharged position of the conveyed object at the upper position of the belt conveyor apparatus 1. The second belt 3 is pressed against the first carrier roller 4 and the second carrier roller 5 while being overlapped. The 1st belt 2 and the 2nd belt 3 are made into the shape which repeats the curved surface which becomes convex toward the 1st belt 2 side, and the curved surface which becomes convex toward the 2nd belt 3 side alternately. Tension is applied to the first belt 2 from both sides in the extending direction of the first belt 2 in the curved surface portion that is convex toward the first belt 2 side. When the resultant tension force from both sides of the first belt 2 becomes a force directed toward the second belt 3, the first belt 2 moves the object to be conveyed between the first belt 2 and the second belt 3. Press on. In this way, the first belt 2 and the second belt 3 sandwich the conveyed object and prevent the conveyed object from sliding down when conveying the conveyed object at a large inclination angle.

  The first belt 2 and the second belt 3 are guided by the guide roller 13 from the discharge position of the conveyed object to the loading position of the conveyed object and return. Further, the belt conveyor device 1 is provided with a take-up 14 shown in FIG. The take-up 14 adjusts the tension applied to the first belt 2 and the second belt 3 by adjusting the length of the moving path of the first belt 2 and the second belt 3.

  In addition, the belt conveyor device 1 includes a frame member 6. The frame member 6 rotatably supports the plurality of first carrier rollers 4 and the second carrier rollers 5. The frame member 6 has a lower horizontal frame 7 and an inclined frame 8. The lower horizontal frame 7 is a frame that is disposed at the loading position of the object to be transported on the bottom surface of the underground space and extends in the horizontal direction. The inclined frame 8 is a frame that is connected to the lower horizontal frame 7 and extends upward from the bottom surface of the underground space. The inclined frame 8 lifts the conveyed object loaded in the lower horizontal frame 7 to an upper position. The lower horizontal frame 7 is movable in the horizontal direction on the bottom surface of the underground space when removed from the inclined frame 8.

  Furthermore, the belt conveyor device 1 includes a ground frame 9. The ground frame 9 is placed on the upper surface of a lining plate B provided substantially the same as the ground surface. The inclined frame 8 is connected to the ground frame 9 via the erection pin 12. The erection pin 12 is a pin extending in a substantially horizontal direction. The inclined frame 8 is swingable about a substantially horizontal axis extending along the erection pin 12 and is connected to the ground frame 9. The tilt angle of the tilt frame 8 with respect to the horizontal plane is variable in a range from a predetermined minimum tilt angle to a maximum tilt angle. That is, the inclined frame 8 can be set to an arbitrary inclination angle within a predetermined range between the horizontal direction and the vertical direction.

  Further, the belt conveyor device 1 is provided with a lifting rod 15 shown in FIG. The lifting rod 15 has one end connected to the inclined frame 8 and the other end connected to the ground frame 9. The connection position of the lifting rod 15 with respect to the ground frame 9 is variable. When the tilt angle of the tilt frame 8 is changed, the tilt frame 8 is lifted by the lifting rod 15 and the connection position of the lifting rod 15 with the ground frame 9 is adjusted. By extending the distance from the connection position of the lifting rod 15 and the ground frame 9 to the connection position of the lifting rod 15 and the inclined frame 8, the lower end of the inclined frame 8 moves from the ground surface to a deep position, and accordingly Thus, the inclination angle of the inclined frame 8 with respect to the horizontal plane increases.

  The outline of the lower horizontal frame 7 and the inclined frame 8 when the inclination angle of the inclined frame 8 with respect to the horizontal plane is increased is shown by a two-dot chain line in FIG. Since the inclined frame 8 rotates around the erection pin 12, when the inclination angle of the inclined frame 8 with respect to the horizontal plane is increased, the lower end portion of the inclined frame 8 moves to a deeper position. In accordance with this, the lower horizontal frame 7 connected to the lower end of the inclined frame 8 also moves to a deeper position. Thus, the belt conveyor apparatus 1 can increase the depth from the ground surface of the installation position of a lower horizontal frame with progress of excavation construction.

  The lower horizontal frame 7 and the inclined frame 8 can be connected by a frame connection pin 11. The frame connection pin 11 can change the insertion position according to the inclination angle of the inclined frame 8.

  Here, as shown in FIGS. 3 and 6, the inclined frame 8 may be configured to have two members, a main frame 8A and an end frame 8B. In this case, the main frame 8A and the end frame 8B are rotatably connected to each other around the connection pin by a connection pin and an inclination angle setting beam 10 (not shown) at the lower end of the main frame 8A. The tilt angle setting beam 10 can be expanded and contracted, and one end of the tilt angle setting beam 10 is fixed to the main frame 8A, and the other end of the tilt angle setting beam 10 is fixed to the end frame 8B. The end frame 8B can adjust the angle with the main frame 8A by rotating around the connection pin according to the expansion and contraction of the tilt angle setting beam 10.

  Next, the configuration of the lower position of the belt conveyor device 1 will be described in more detail with reference to FIG. FIG. 3 is an enlarged side view of a main part of the belt conveyor device 1.

  The first belt 2 is pressed by the first carrier roller 4 and forms a curved surface F1 that protrudes toward the second belt 3 at the loading position P1 of the object to be conveyed at a position below the belt conveyor device 1. The curved surface F1 forms an arc having an arc angle θ1 in a side view. The arc angle θ1 is larger than the movable range angle of the tilt angle of the tilt frame 8. For example, when the inclination angle of the inclined frame 8 with respect to the horizontal plane can be changed within a movable range of 60 ° from 15 ° to 75 °, the arc angle θ1 is set to an angle larger than the movable range angle of 60 °. And in this loading position, the 2nd belt 3 is pressed by the 2nd carrier roller 5, and is arrange | positioned so that the tangent direction with respect to the 1st belt 2 may be met. Specifically, the second belt 3 has a curved surface that is convex toward the first belt 2 at the loading position P1, and the tangent of the curved surface is a curved surface formed by the first belt 2 at the loading position P1. It is parallel to the tangential direction of F1.

  Moreover, the 2nd belt 3 forms the slope surface F2 connected to the loading position P1 of a to-be-conveyed object by being pressed by the 2nd carrier roller 5. FIG. The slope surface F2 has an inclination angle θ2 of 13 ° or less with respect to the horizontal plane.

  Next, in the belt conveyor apparatus 1 configured as described above, the operation of the belt conveyor apparatus 1 when the inclination angle is changed with the progress of excavation work will be described with reference to FIGS. 4 and 5. FIG. 4 is a perspective view of the belt conveyor device 1 when the inclination angle is changed, and FIG. 5 is a side view of the belt conveyor device 1 when the inclination angle is changed. 4A to 4D correspond to FIGS. 5A to 5D, respectively.

  FIG. 4A and FIG. 5A show a stage where the depth of the underground space where the earth and sand are excavated is shallow at the initial stage of excavation work. At this time, the inclination angle of the inclined frame 8 with respect to the horizontal plane is small.

  Thereafter, when the excavation work proceeds and the bottom surface of the underground space becomes deeper, the inclination angle of the inclined frame 8 with respect to the horizontal plane is increased as shown in FIGS. 4B and 5B. When the inclination angle of the inclined frame 8 is increased, the second belt 3 maintains a state of being arranged along the tangential direction with respect to the first belt 2 at the loading position of the conveyed object. Specifically, as shown in the enlarged view of the periphery of the lower horizontal frame 7 in FIG. 6A, the fixing of the lower horizontal frame 7 and the inclined frame 8 is released, and the position of the lower end portion of the inclined frame 8 is changed. Accordingly, by moving the lower horizontal frame 7 in the horizontal direction on the bottom surface of the underground space, the tangent line of the first belt 2 and the tangent line of the second belt 3 are made parallel at the loading position.

  Thereafter, when the excavation work further proceeds and the bottom surface of the underground space becomes a deeper position, the inclination angle of the inclined frame 8 with respect to the horizontal plane is further increased as shown in FIGS. 4 (c) and 5 (c). 4B and FIG. 5B, the lower horizontal frame 7 is moved in the horizontal direction, and the position where the second belt 3 is arranged along the tangential direction of the first belt 2 is determined. To maintain.

  At the final stage of excavation work, as shown in FIGS. 4D and 5D, the inclination angle of the inclined frame 8 with respect to the horizontal plane is set to a predetermined maximum inclination angle. At this time, the conveying distance in the vertical direction of the belt conveyor device 1 is maximized. Also in this case, the lower horizontal frame 7 is moved in the horizontal direction so that the position where the second belt 3 is disposed along the tangential direction of the first belt 2 is maintained as shown in FIG. To do.

  Thus, according to the belt conveyor apparatus 1, when the inclination angle of the inclined frame 8 is changed, the lower horizontal frame 7 is moved in accordance with the change of the inclination angle of the inclined frame 8, so that The state in which the second belt 3 is arranged in the tangential direction with respect to the first belt 2 is maintained, and the object to be conveyed is between the first belt 2 and the second belt 3 even when the inclination angle of the inclined frame 8 is changed. It is surely pinched. As a result, the transported object is reliably loaded on the belt conveyor device 1 regardless of the transport distance of the transported object in the vertical direction.

  Further, when the curved surface F1 has an arc having a larger arc angle than the movable range angle of the inclined frame 8 in a side view, the inclined angle of the inclined frame 8 is changed to any angle within the movable range. In addition, the state in which the second belt 3 is disposed in the tangential direction with respect to the first belt 2 at the loading position can be maintained, and the object to be conveyed can be more reliably loaded onto the belt conveyor device 1.

  Further, the second belt 3 forms a slope surface F2 connected to the loading position P1, and the inclination angle of the slope surface F2 with respect to the horizontal plane is 13 ° or less, so that the second belt 3 is conveyed on the second belt 3. Since the object is conveyed from the slope surface F2 to the loading position P1 without sliding down, the object to be conveyed is reliably loaded on the belt conveyor device 1.

  Further, since the ground frame 9 is placed on the ground surface, and the inclined frame 8 is connected to the ground frame 9 via the erection pin 12 so as to be rotatable around the erection pin 12, the inclination frame 8 is erected. By rotating around the pin 12 and pulling up the inclined frame 8, the inclined frame 8 and the lower horizontal frame 7 connected to the inclined frame 8 are pulled up from a substantially horizontal plane on which the lower horizontal frame 7 is placed. For this reason, when the excavation is advanced below the lower horizontal frame 7 as the construction progresses, the lower horizontal frame is retracted to a place where the excavation does not hinder the excavation work.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the shape of the curved surface F1 formed by the first belt 2 in the side view is described as an arc shape, but the shape of the curved surface F1 is not limited to this, and for example, the shape of the circumference of the ellipse in the side view is A shape like a part may be sufficient. Further, the second belt 3 may simply form a flat surface without forming a curved surface that protrudes toward the first belt 2 at the loading position P1. In short, the curved surface F1 formed by the first belt 2 is convex toward the second belt 3 at the loading position P1, and the second belt is changed when the inclination angle of the inclined frame 8 is changed. What is necessary is just to maintain the state where 3 is arrange | positioned in the tangent direction of the curved surface F1. The ground frame 9 may be movable on the ground surface.

DESCRIPTION OF SYMBOLS 1 ... Belt conveyor apparatus 2 ... 1st belt 3 ... 2nd belt 4 ... 1st carrier roller 5 ... 2nd carrier roller 6 ... Frame member 7 ... Lower horizontal frame 8 ... Inclined frame 8A ... Main frame 8B ... End part frame 9 ... Ground frame 10 ... Inclination angle setting beam 11 ... Frame connecting pin 12 ... Erecting pin 13 ... Guide roller 14 ... Take-up 15 ... Lifting rod A ... Opening part B ... Back cover C1 ... Front conveyor C2 ... Back conveyor D ... Dump truck F1 ... curved surface F2 ... slope surface H ... hopper P1 ... loading position X ... substantially horizontal axis

Claims (6)

A first belt and a second belt facing each other;
A plurality of first carrier rollers for pressing the first belt in a direction intersecting the surface of the first belt;
A plurality of second carrier rollers that press the second belt in a direction intersecting the surface of the second belt;
A belt conveyor device that conveys an object to be conveyed between the first belt and the second belt from a lower position to an upper position,
A frame member that rotatably supports the plurality of first carrier rollers and the plurality of second carrier rollers,
The frame member is a lower horizontal frame disposed at a loading position of the object to be conveyed in the lower position;
An inclined frame that is capable of swinging about a substantially horizontal axis set at the upper position, and that lifts the object to be transported loaded on the lower horizontal frame;
Have
The first belt in the loading position is a curved surface that is convex toward the second belt side ,
It said second belt at said loading position is arranged along a tangential direction with respect to the first belt,
The lower horizontal frame is movable in a horizontal direction with respect to the inclined frame;
When the inclination angle of the inclined frame with respect to the lower horizontal frame is changed, the position of the lower horizontal frame follows the change in the inclination angle, so that the second belt moves along the tangential direction with respect to the first belt. The belt conveyor apparatus characterized by maintaining the state arrange | positioned.   The belt conveyor device according to claim 1, wherein the curved surface forms an arc having an arc angle larger than a movable range angle of the tilt angle of the tilt frame in a side view. The second belt forms a slope surface connected to the loading position;
The belt conveyor apparatus according to claim 1 or 2, wherein an inclination angle of the slope surface with respect to a horizontal plane is 13 ° or less. The inclined frame includes a main frame, and an end frame that is rotatably connected to the main frame at an end portion on the lower position side of the main frame,
The belt conveyor device according to any one of claims 1 to 3, wherein the main frame and the end frame are connected by a tilt angle setting beam that can be expanded and contracted. It has a ground frame placed on the ground surface,
The belt conveyor device according to any one of claims 1 to 4, wherein the inclined frame is connected to the ground frame so as to be rotatable around the erection pin via the erection pin at the upper position. A first belt and a second belt facing each other; a plurality of first carrier rollers that press the first belt in a direction intersecting the surface of the first belt; and the direction intersecting the surface of the second belt. A plurality of second carrier rollers that press the second belt, and using a belt conveyor device that conveys an object to be conveyed from a lower position to an upper position while sandwiching an object to be conveyed by the first belt and the second belt, A transport method for a transport object for transporting a transport object,
Changing the inclination angle of the belt conveyor device;
A step of transporting the object to be transported after changing the tilt angle,
The belt conveyor device includes a frame member that rotatably supports the plurality of first carrier rollers and the plurality of second carrier rollers, and the frame member is located at a loading position of the object to be conveyed in the lower position. A lower horizontal frame that is disposed; and an inclined frame that is swingable about a substantially horizontal axis that is set at the upper position and that lifts the object to be transported loaded on the lower horizontal frame. The first belt in the loading position is a curved surface that is convex toward the second belt, and the second belt in the loading position is disposed along a tangential direction with respect to the first belt; The lower horizontal frame is movable in a horizontal direction with respect to the inclined frame;
The step of changing the tilt angle includes a step of releasing the fixation between the lower horizontal frame and the tilt frame, a step of changing the tilt angle of the tilt frame, and a step of moving the lower horizontal frame in the horizontal direction. Including
In the step of moving the lower horizontal frame, the position of the lower horizontal frame is made to follow the change in the inclination angle, thereby maintaining the state in which the second belt is disposed along the tangential direction with respect to the first belt. , A method for transporting a transported object.

Images