Bedplate conveying system and bedplate conveying method

Abstract

Suppress the equipment scale and shorten the construction schedule. 【Solution means】The floor slab conveying system includes a lifting device for suspending and lifting the floor slab, and a horizontal moving device that is installed separately from the lifting device, is movable along the horizontal plane, has a support portion for supporting the floor slab, and is provided with a support portion that can move forward and backward on the track of the floor slab lifted and lowered by the lifting device.

Description

Technical Field

[0001] The present invention relates to a floor slab conveying system and a floor slab conveying method.

Background Art

[0002] In a structure such as a bridge, it is configured with a plurality of floor slabs arranged. When constructing such a structure, the floor slabs are transported using a transport device as described in Patent Document 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described transport device, since the equipment scale is large, it takes a long time to install, disassemble, and reassemble the equipment, and there is a problem that the construction schedule is prolonged.

[0005] The present invention has been made in view of the above, and an object thereof is to provide a floor slab conveying system and a floor slab conveying method capable of suppressing the equipment scale and shortening the construction schedule.

Means for Solving the Problems

[0006] The floor slab conveying system according to the present invention includes a lifting device that suspends and raises and lowers a floor slab, and a horizontal moving device that is installed separately from the lifting device, is movable along a horizontal plane, has a support portion that supports the floor slab, and is capable of advancing and retreating on the track of the floor slab lifted and lowered by the lifting device.

[0007] The floor slab conveying method according to the present invention includes a lifting step of lifting and pulling up the floor slab by the lifting device of the above floor slab conveying system, a standby step of moving the horizontal moving device of the floor slab conveying system to a position below the pulled-up floor slab and waiting, a delivery step of lowering the floor slab by the lifting device and supporting it on the horizontal moving device, and releasing the suspension by the lifting device, and a carrying-out step of moving the horizontal moving device along the horizontal plane in a state of supporting the floor slab so as to retreat from the standby position.

[0008] The floor slab conveying method according to the present invention includes a carrying-in step of moving the horizontal moving device along the horizontal plane while supporting the floor slab by the support portion of the horizontal moving device of the above floor slab conveying system, and arranging the floor slab above the installation area where the floor slab is to be installed, a lifting step of lifting and suspending the floor slab arranged above the installation area by the lifting device of the floor slab conveying system, a retreating step of retreating the horizontal moving device from above the installation area after the lifting step, and a lowering step of lowering the floor slab by the lifting device and arranging the floor slab in the installation area after the retreating step.

Advantages of the Invention

[0009] According to the present invention, the equipment scale can be suppressed and the construction schedule can be shortened.

Brief Description of the Drawings

[0010]

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DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of a floor slab conveying system and a floor slab conveying method according to the present invention will be described with reference to the drawings. Note that the present invention is not limited by this embodiment. Further, the constituent elements in the following embodiments include those that can be replaced by those skilled in the art and are easy to replace, or those that are substantially the same.

[0012] In this embodiment, the directions in the figure are described using an XYZ coordinate system. In the XYZ coordinate system, a plane parallel to the horizontal plane is defined as the XY plane. In this XY plane, the longitudinal direction of the floor slab 40 is denoted as the Y direction, and the direction orthogonal to the Y direction on the XY plane is denoted as the X direction. The direction perpendicular to the XY plane is denoted as the Z direction. The Z direction is the vertical direction or the up-and-down direction. Each of the X direction, Y direction, and Z direction is described such that the direction of the arrow in the figure is the + direction, and the direction opposite to the direction of the arrow is the - direction.

[0013] FIGS. 1 and 2 are diagrams showing an example of a floor slab conveying system 100 according to this embodiment. FIG. 1 is a schematic view seen from the side, and FIG. 2 is a schematic view seen from the top. As shown in FIGS. 1 and 2, the floor slab conveying system 100 includes a lifting device 10 and a horizontal moving device 20. The floor slab conveying system 100 shown in FIG. 1 is used for conveying the floor slab 40. The floor slab 40 is used for highways, bridges, etc. The conveyance of the floor slab 40 includes removing and carrying out one floor slab 40 from a state where a plurality of floor slabs 40 are installed as shown in FIG. 1. Further, the conveyance of the floor slab 40 includes carrying a new floor slab 40 into the empty space R (installation area AR) from which the floor slab 40 has been removed. In this embodiment, a plurality of floor slabs 40 are arranged along the horizontal plane. The upper surfaces of the plurality of floor slabs 40 and the upper surfaces of roads or the like connected to the upper surfaces can be used as a working surface S along the horizontal plane.

[0014] The lifting device 10 is a device that moves the floor slab 40 in a direction perpendicular to the horizontal plane (vertical direction, up-and-down direction). The lifting device 10 includes a frame 11, a suspension mechanism 12, and a control unit 13. In FIG. 2, the illustration of the frame 11 and the control unit 13 is omitted.

[0015] The frame 11 is, for example, in the shape of a portal. The frame 11 has a column part 11a and a beam part 11b. The column parts 11a are arranged at two positions spaced apart in the horizontal direction, for example, and are supported by the working surface S. The beam part 11b connects the upper parts of the column parts 11a. Further, the frame 11 may be movable horizontally on the working surface S.

[0016] The suspension mechanism 12 is provided on the beam part 11b. The suspension mechanism 12 has a wire 14 and a wire drive mechanism 15. The upper end of the wire 14 is connected to the wire drive mechanism 15, and a locking part such as a hook for suspending the floor slab 40 is provided at the lower end. A plurality of wires 14 are provided in parallel, for example. The wire drive mechanism 15 pays out and winds up the wire 14. The wire drive mechanism 15 can synchronously pay out and wind up a plurality of wires 14. The suspension mechanism 12 can raise and lower the floor slab 40 suspended at the lower end of the wire 14 along a predetermined track D by paying out and winding up the wire 14 by the wire drive mechanism 15. Note that the suspension mechanism 12 may be provided so as to be rotatable about an axis parallel to the vertical direction (hereinafter referred to as the vertical axis). By rotating the suspension mechanism 12, for example, the longitudinal direction of the floor slab 40 can be adjusted in a state where the floor slab 40 is suspended. The suspension mechanism 12 may be movable horizontally along the beam part 11b.

[0017] The control unit 13 controls the operation of the suspension mechanism 12. Specifically, the control unit 13 controls the pay-out operation and the winding-up operation of the wire 14 by the wire drive mechanism 15.

[0018] The horizontal movement device 20 is an independent device installed separately from the lifting device 10. The horizontal movement device 20 has a base member 21, wheels 22, a drive mechanism 23, and a control unit 24. In FIG. 2, the illustration of the control unit 24 is omitted.

[0019] The base member 21 is plate-shaped and supports the floor slab 40. The wheels 22 support the base member 21 and roll on the working surface S along the horizontal plane. The wheels 22 are provided at at least three or more locations, and in this embodiment, at four locations, on the base member 21.

[0020] The base member 21 has a support portion 21a that supports the floor slab 40 and a base portion 21b that is supported by the wheels 22. The base portion 21b is the portion that connects the four wheels 22 in a straight line in plan view. The support portion 21a is formed to protrude in the horizontal direction with respect to the base portion 21b. Thus, the horizontal movement device 20 has the configuration of a so-called cantilever trolley.

[0021] In the base member 21, a rotation mechanism 30 is provided in the support portion 21a. The rotation mechanism 30 has a turntable 31 and a turn drive mechanism 32. The turntable 31 is rotatable about the axis of the vertical axis while supporting the floor slab 40. The turn drive mechanism 32 drives the turntable 31. By rotating the turntable 31 while supporting the floor slab 40, the orientation of the longitudinal direction of the floor slab 40 can be adjusted. Note that the turntable 31 may be movable in the longitudinal direction and the lateral direction of the base member 21, respectively.

[0022] The drive mechanism 23 drives the wheels 22. When the wheels 22 are placed on the working surface S and the wheels 22 are driven by the drive mechanism 23, the wheels 22 roll on the working surface S. By the rolling of the wheels 22, the horizontal movement device 20 can move along the horizontal plane. The drive mechanism 23 is disposed on the base portion 21b of the base member 21. Note that a counter mass or the like may be disposed on the base portion 21b to suppress the support portion 21a from tilting downward due to weight when the floor slab 40 is placed on the support portion 21a.

[0023] The control unit 24 controls the drive mechanism 23 of the horizontal movement device 20 and the turn drive mechanism 32. By controlling the drive mechanism 23, the control unit 24 can control the movement timing, movement speed, and movement amount of the horizontal movement device 20. By controlling the turn drive mechanism 32, the control unit 24 can control the rotation timing of the turn table 31 and the like.

[0024] Next, a floor slab conveying method using the floor slab conveying system 100 configured as described above will be described. First, a floor slab conveying method when removing the floor slab 40 using the floor slab conveying system 100 will be described. FIG. 3 is a flowchart showing an example of a floor slab conveying method when removing the floor slab 40 using the floor slab conveying system 100. As shown in FIG. 3, the floor slab conveying method includes a lifting step S10, a standby step S20, a delivery step S30, an orientation adjustment step S40, and a carry-out step S50. Hereinafter, each step will be described with reference to FIGS. 4A to 8B.

[0025] In the lifting step S10, the lifting device 10 of the floor slab conveying system 100 suspends and lifts the floor slab 40 to be removed. FIGS. 4A and 4B are diagrams showing an example of the lifting step. In the lifting step S10, first, the lower end of the wire 14 is locked to the floor slab 40. From this state, by winding the wire 14 by the wire drive mechanism 15, as shown in FIGS. 4A and 4B, the floor slab 40 is lifted by the wire 14. In the lifting step S10, the floor slab 40 is lifted to a position higher than the height of the base member 21 of the horizontal movement device 20 of the floor slab conveying system 100. By lifting the floor slab 40, a vacant space R is formed in the portion where the floor slab 40 was installed. The vacant space R is used as an installation area AR for installing a new floor slab 40 described later.

[0026] The standby process S20 moves the horizontal transfer device 20 to a standby position P below the lifted floor slab 40 and makes it standby. FIGS. 5A and 5B are diagrams showing an example of the standby process. In the standby process S20, by driving the wheels 22 by the drive mechanism 23, as shown in FIGS. 5A and 5B, the horizontal transfer device 20 is moved so that the support portion 21a of the base member 21 is positioned below the floor slab 40. In the present embodiment, since the support portion 21a of the base member 21 protrudes with respect to the base portion 21b, the support portion 21a can be positioned above the empty space R in a state where the base portion 21b is arranged at the periphery of the empty space R.

[0027] In the transfer process S30, the lifting device 10 lowers the floor slab 40 to support it on the horizontal transfer device 20, and releases the suspension by the lifting device 10. FIGS. 6A and 6B are diagrams showing an example of the transfer process. In the transfer process S30, as shown in FIGS. 6A and 6B, by lowering the floor slab 40, the floor slab 40 is placed on the turntable 31 arranged on the support portion 21a of the horizontal transfer device 20. Then, the suspension is released by removing the lower end of the wire 14 from the floor slab 40.

[0028] In the orientation adjustment process S40, the floor slab 40 is rotated around the axis of the vertical axis AX to adjust the longitudinal orientation of the floor slab 40. FIGS. 7A and 7B are diagrams showing an example of the orientation adjustment process. In the orientation adjustment process S40, as shown in FIGS. 7A and 7B, the floor slab 40 is rotated around the axis of the vertical axis AX by rotating the turntable 31 around the axis of the vertical axis AX. By adjusting the rotation amount of the turntable 31, the longitudinal orientation of the floor slab 40 can be adjusted. In the orientation adjustment process S40, for example, the turntable 31 is rotated so that the longitudinal orientation of the floor slab 40 is aligned with the moving direction of the horizontal transfer device 20.

[0029] In the unloading process S50, with the floor slab 40 supported, the horizontal moving device 20 is moved along a horizontal plane from the standby position P to a retracted position. FIGS. 8A and 8B are diagrams showing an example of the unloading process. In the unloading process S50, as shown in FIGS. 8A and 8B, the horizontal moving device 20 is moved along the horizontal plane by driving the wheels 22 on the working surface S by the drive mechanism 23. In the above-mentioned orientation adjustment process S40, by aligning the longitudinal direction of the floor slab 40 with the moving direction of the horizontal moving device 20, the floor slab 40 can be moved compactly.

[0030] Next, the operation when installing a new floor slab 40 using the floor slab conveying system 100 will be described. FIG. 9 is a flowchart showing an example of a floor slab conveying method when installing a new floor slab 40 using the floor slab conveying system 100. As shown in FIG. 9, the floor slab conveying method includes a loading process S110, an orientation adjustment process S120, a lifting process S130, a retraction process S140, and a lowering process S150. Hereinafter, each process will be described with reference to FIGS. 10A to 14B.

[0031] In the loading process S110, with the floor slab 40 supported by the support portion 21a of the horizontal moving device 20 of the floor slab conveying system 100, the horizontal moving device 20 is moved along a horizontal plane, and the floor slab 40 is disposed above the installation area AR where the floor slab 40 is to be installed. FIGS. 10A and 10B are diagrams showing an example of the loading process. In the loading process S110, the floor slab 40 is placed on the turntable 31 disposed on the support portion 21a of the horizontal moving device 20, and the longitudinal direction of the floor slab 40 is aligned with the moving direction of the horizontal moving device 20. From this state, as shown in FIGS. 10A and 10B, by driving the wheels 22 by the drive mechanism 23, the horizontal moving device 20 is moved on the working surface S along the horizontal plane, and the floor slab 40 can be disposed above the installation area AR. That is, in the present embodiment, since the support portion 21a of the base member 21 protrudes with respect to the base portion 21b, the support portion 21a can be positioned above the installation area AR with the base portion 21b disposed at the periphery of the installation area AR on the working surface S.

[0032] The orientation adjustment step S120 rotates the floor slab 40 around the axis of the vertical axis AX to adjust the longitudinal orientation of the floor slab 40. FIGS. 11A and 11B are diagrams showing an example of the orientation adjustment step. In the orientation adjustment step S120, as shown in FIGS. 11A and 11B, the turntable 31 is rotated around the axis of the vertical axis AX, thereby rotating the floor slab 40 around the axis of the vertical axis AX. By adjusting the rotation amount of the turntable 31, the longitudinal orientation of the floor slab 40 can be adjusted. In the orientation adjustment step S120, the longitudinal orientation of the floor slab 40 is adjusted to match the longitudinal orientation of the floor slab 40 in the state where the floor slab 40 is installed in the installation area AR.

[0033] The lifting step S130 lifts the floor slab 40 disposed above the installation area AR by the lifting device 10 of the floor slab conveying system 100. FIGS. 12A and 12B are diagrams showing an example of the lifting step. In the lifting step S130, as shown in FIGS. 12A and 12B, the floor slab 40 leaves the horizontal movement device 20 and is transferred to the lifting device 10.

[0034] The retraction step S140 retracts the horizontal movement device 20 from above the installation area AR after the lifting step S130. FIGS. 13A and 13B are diagrams showing an example of the retraction step. In the retraction step S140, as shown in FIGS. 13A and 13B, the wheels 22 are driven by the drive mechanism 23 to move the horizontal movement device 20 along the horizontal plane.

[0035] The lowering step S150 lowers the floor slab 40 by the lifting device 10 after the retraction step S140 and disposes the floor slab 40 in the installation area AR. FIGS. 14A and 14B are diagrams showing an example of the lowering step. In the lowering step S150, by adjusting the longitudinal orientation of the floor slab 40 to match the longitudinal orientation of the floor slab 40 in the state where the floor slab 40 is installed in the installation area AR in the above-mentioned orientation adjustment step S120, as shown in FIGS. 14A and 14B, the floor slab 40 can be appropriately installed in the installation area AR.

[0036] As described above, the floor slab conveying system 100 according to the present embodiment includes a lifting device 10 that suspends and raises and lowers the floor slab 40, and a horizontal moving device 20 that is installed separately from the lifting device 10, is movable along a horizontal plane, has a support portion 21a for supporting the floor slab 40, and is capable of advancing and retreating the support portion 21a on an orbit D of the floor slab 40 that is raised and lowered by the lifting device 10.

[0037] According to this configuration, the floor slab 40 can be raised and lowered by the lifting device 10, and the floor slab 40 can be moved along the horizontal plane by the horizontal moving device 20. Further, by advancing and retreating the support portion 21a on the orbit D of the floor slab 40 that is raised and lowered by the lifting device 10, it becomes possible to transfer the floor slab 40 between the lifting device 10 and the horizontal moving device 20. In this way, the operation of removing the floor slab 40 and the operation of installing a new floor slab 40 can be appropriately performed by the separately provided lifting device 10 and horizontal moving device 20. In this configuration, since the horizontal moving device 20 and the lifting device 10 are provided separately, compared to a device in which the horizontal moving device 20 and the lifting device 10 are integrated, each can be individually installed, disassembled, reassembled, etc., and the equipment scale can be suppressed. Thereby, the construction schedule can be shortened.

[0038] In the floor slab conveying system 100 according to the present embodiment, the horizontal moving device 20 includes a base member 21 including the support portion 21a, and wheels 22 that support the base member 21 and roll on a working surface S along the horizontal plane.

[0039] According to this configuration, the horizontal moving device 20 can be easily moved by rolling the wheels 22 on the working surface S.

[0040] In the floor slab conveying system 100 according to the present embodiment, the base member 21 includes a base portion 21b supported by the wheels 22, and the support portion 21a is formed so as to protrude in the horizontal direction with respect to the base portion 21b.

[0041] According to this configuration, since it has a configuration of a so-called cantilever carriage in which the support portion 21a is formed to protrude in the horizontal direction with respect to the base portion 21b, the support portion 21a can be disposed above the installation region AR in a state where the base portion 21b does not interfere with the installation region AR.

[0042] In the floor slab conveying system 100 according to the present embodiment, at least one of the lifting device 10 and the horizontal movement device 20 has a rotation mechanism 30 that rotates the floor slab 40 around the axis of the vertical axis AX.

[0043] According to this configuration, since the longitudinal direction of the floor slab 40 can be adjusted by rotating the floor slab 40 around the axis of the vertical axis AX, it can be arranged with high precision with respect to the installation region AR.

[0044] In the floor slab conveying system 100 according to the present embodiment, the rotation mechanism 30 has a turntable 31 that is provided on the support portion 21a of the horizontal movement device 20 and supports and rotates the floor slab 40.

[0045] According to this configuration, by rotating the turntable 31, the floor slab 40 can be stably rotated while being supported by the support portion 21a.

[0046] In the floor slab conveying system 100 according to the present embodiment, the turntable 31 is movable on the base member 21.

[0047] According to this configuration, by moving the turntable 31 on the base member 21, the position of the floor slab 40 on the base member 21 can be adjusted.

[0048] The floor slab conveying method according to this embodiment includes a lifting step S10 in which the lifting device 10 of the floor slab conveying system 100 lifts and lowers the floor slab 40, a standby step S20 in which the horizontal moving device 20 of the floor slab conveying system 100 is moved to a standby position P below the lifted floor slab 40 and waits, a delivery step S30 in which the lifting device 10 lowers the floor slab 40 to support it on the horizontal moving device 20 and releases the suspension by the lifting device 10, and a carrying-out step S50 in which the horizontal moving device 20 is moved to retract from the standby position P while supporting the floor slab 40.

[0049] According to this configuration, the floor slab 40 can be appropriately and efficiently carried out from the installation area AR by using the floor slab conveying system 100 in which the lifting device 10 and the horizontal moving device 20 are provided separately.

[0050] In the floor slab conveying method according to this embodiment, before performing the carrying-out step S50, it further includes an orientation adjustment step S40 in which the floor slab 40 is rotated around the axis of the vertical axis AX to adjust the orientation of the longitudinal direction of the floor slab 40.

[0051] According to this configuration, since the orientation of the longitudinal direction of the floor slab 40 can be adjusted, the conveying trajectory of the floor slab 40 can be made compact.

[0052] The floor slab conveying method according to this embodiment includes a carrying-in step S110 in which the horizontal moving device 20 of the floor slab conveying system 100 is moved while supporting the floor slab 40, and the floor slab 40 is arranged above the installation area AR on the working surface S, a lifting step S130 in which the lifting device 10 of the floor slab conveying system 100 lifts and suspends the floor slab 40 arranged above the installation area AR, a retraction step S140 in which the horizontal moving device 20 is retracted from above the installation area AR after the lifting step S130, and a lowering step S150 in which the lifting device 10 lowers the floor slab 40 to arrange the floor slab 40 in the installation area AR after the retraction step S140.

[0053] According to this configuration, the floor slab 40 can be appropriately and efficiently arranged with respect to the installation area AR by using the floor slab conveying system 100 in which the lifting device 10 and the horizontal moving device 20 are provided separately.

[0054] In the floor slab conveying method according to the present embodiment, before performing the lowering step S150, it further includes an orientation adjustment step S120 of rotating the floor slab 40 around the axis of the vertical axis AX to adjust the orientation of the longitudinal direction of the floor slab 40.

[0055] According to this configuration, since the orientation of the longitudinal direction of the floor slab 40 can be adjusted, it can be arranged with high precision with respect to the installation area AR.

[0056] The technical scope of the present invention is not limited to the above embodiments, and appropriate modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, as the horizontal moving device 20, a configuration having wheels 22 that roll on the working surface S is described as an example, but it is not limited to this configuration. For example, a configuration may be such that rails are formed so as to straddle the empty space R (installation area AR) on the working surface S and the floor slab moves on the rails.

Explanation of Reference Numerals

[0057] 10... Lifting device 11... Frame 11a... Column part 11b... Beam part 12... Suspension mechanism 13, 24... Control unit 14... Wire 15... Wire drive mechanism 20... Horizontal moving device 21... Base member 21a... Support part 21b... Base 22... Wheels 23... Drive mechanism 30... Rotation mechanism 31... Turntable 32... Turn drive mechanism 40... Floor slab 100... Floor slab conveying system AR... Installation area AX... Vertical axis D... Orbit P... Standby position R... Free space S... Working surface

Claims

1. A lifting device for suspending and lifting a bed board, which is installed separately from the lifting device, is movable on a working surface along a horizontal plane, has a support portion for supporting the bed board, and is a horizontal movement device capable of advancing and retreating on the track of the bed board lifted and lowered by the lifting device and is provided with wherein the horizontal movement device is a carriage having a base member including the support portion and wheels that support the base member and roll on a working surface along the horizontal plane, the base member includes a base supported by the wheels, the support portion is formed to project horizontally upward from the base to above the installation area with the wheels disposed at the periphery of the installation area of the working surface where the bed board is installed bed board conveying system.

2. At least one of the lifting device and the horizontal movement device has a rotation mechanism for rotating the bed board around the axis of a vertical axis The bed board conveying system according to Claim 1.

3. The rotation mechanism has a turntable provided on the support portion of the horizontal movement device and capable of supporting and rotating the bed board The bed board conveying system according to Claim 2.

4. The turntable is movable on the base member The bed board conveying system according to Claim 3.

5. A lifting step of suspending and lifting a bed board by the lifting device of the bed board conveying system according to Claim 1, a standby step of moving the horizontal movement device of the bed board conveying system to a standby position below the lifted bed board and waiting, a handover step of lowering the bed board by the lifting device to be supported by the horizontal movement device and releasing the suspension by the lifting device, and a carrying-out step of moving the horizontal movement device supporting the bed board so as to retreat from the standby position bed board conveying method including.

6. Before performing the carrying-out step, it further includes an orientation adjustment step of rotating the bed board around the axis of a vertical axis to adjust the orientation of the longitudinal direction of the bed board The bed board conveying method according to Claim 5.

7. A lifting device for suspending and lifting a bed board, which is installed separately from the lifting device, is movable along a horizontal plane, has a support portion for supporting the bed board, and is a horizontal movement device capable of advancing and retreating on the track of the bed board lifted and lowered by the lifting device While the floor slab is supported by the support portion of the horizontal movement device of the floor slab conveying system, move the horizontal movement device and place the floor slab above the installation area where the floor slab is to be installed; a loading step A lifting step of suspending and lifting the floor slab disposed above the installation area by the lifting device of the floor slab conveying system After the lifting step, a retracting step of retracting the horizontal movement device from above the installation area After the retracting step, a lowering step of lowering the floor slab by the lifting device and placing the floor slab in the installation area A floor slab conveying method including the above steps

8. Before performing the lowering step, further including an orientation adjustment step of rotating the floor slab around the axis of the vertical axis to adjust the orientation of the longitudinal direction of the floor slab The floor slab conveying method according to Claim 7

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