Deck slab transport system and deck slab transport method

Abstract

We will reduce the scale of the facilities and shorten the construction schedule. [Solution] The deck slab transport system comprises a lifting device that suspends and raises the deck slab, and a horizontal moving device that is installed separately from the lifting device, is movable along a horizontal plane, has a support part that supports the deck slab, and is capable of moving the support part back and forth along the track of the deck slab that is raised 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 structures such as bridges, a plurality of floor slabs are 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 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 a track of the floor slab that is raised and lowered by the lifting device.

[0007] The floor slab transport method according to the present invention includes a lifting step of suspending and lifting the floor slab using the lifting device of the floor slab transport system described above; a waiting step of moving the horizontal movement device of the floor slab transport system below the lifted floor slab and putting it into standby position; a transfer step of lowering the floor slab using the lifting device and supporting it with the horizontal movement device, and releasing the suspension by the lifting device; and a transport step of moving the horizontal movement device from the standby position to a safe distance along the horizontal plane while supporting the floor slab.

[0008] The floor slab transport method according to the present invention includes a transport step of moving the horizontal moving device of the floor slab transport system along a horizontal plane while supporting the floor slab with the support portion of the horizontal moving device of the floor slab transport system, and positioning the floor slab above the installation area where the floor slab will be installed; a lifting step of suspending and lifting the floor slab positioned above the installation area using the lifting device of the floor slab transport system; a retreat step of moving the horizontal moving device away from above the installation area after the lifting step; and a lowering step of lowering the floor slab using the lifting device after the retreat step to position the floor slab in the installation area. [Effects of the Invention]

[0009] According to the present invention, it is possible to reduce the scale of the equipment and shorten the construction schedule. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 shows an example of a slab transport system according to an embodiment. [Figure 2] Figure 2 shows an example of a deck slab transport system according to the embodiment. [Figure 3] Figure 3 is a flowchart showing an example of a method for transporting a bridge deck when removing it using a bridge deck transport system. [Figure 4A] Figure 4A shows an example of the lifting process. [Figure 4B] Figure 4B shows an example of the lifting process. [Figure 5A]FIG. 5A is a diagram showing an example of a standby process. [Figure 5B] FIG. 5B is a diagram showing an example of a standby process. [Figure 6A] FIG. 6A is a diagram showing an example of a delivery process. [Figure 6B] FIG. 6B is a diagram showing an example of a delivery process. [Figure 7A] FIG. 7A is a diagram showing an example of an orientation adjustment process. [Figure 7B] FIG. 7B is a diagram showing an example of an orientation adjustment process. [Figure 8A] FIG. 8A is a diagram showing an example of an unloading process. [Figure 8B] FIG. 8B is a diagram showing an example of an unloading process. [Figure 9] FIG. 9 is a flowchart showing an example of a floor slab transportation method when installing a new floor slab using a floor slab transportation system. [Figure 10A] FIG. 10A is a diagram showing an example of a loading process. [Figure 10B] FIG. 10B is a diagram showing an example of a loading process. [Figure 11A] FIG. 11A is a diagram showing an example of an orientation adjustment process. [Figure 11B] FIG. 11B is a diagram showing an example of an orientation adjustment process. [Figure 12A] FIG. 12A is a diagram showing an example of a lifting process. [Figure 12B] FIG. 12B is a diagram showing an example of a lifting process. [Figure 13A] FIG. 13A is a diagram showing an example of an evacuation process. [Figure 13B] FIG. 13B is a diagram showing an example of an evacuation process. [Figure 14A] FIG. 14A is a diagram showing an example of a lowering process. [Figure 14B] FIG. 14B is a diagram showing an example of a lowering process.

MODE FOR CARRYING OUT THE INVENTION

[0011] Hereinafter, embodiments of the deck slab transport system and deck slab transport method according to the present invention will be described with reference to the drawings. However, the present invention is not limited by these embodiments. Furthermore, the components in the following embodiments include those that are easily substituted or substantially identical to those that are easily substituted by those skilled in the art.

[0012] In this embodiment, directions in the figure will be explained using the XYZ coordinate system. In this XYZ coordinate system, the 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 perpendicular 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 up and down direction. In the X, Y, and Z directions, 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] Figures 1 and 2 show an example of a deck slab transport system 100 according to this embodiment. Figure 1 is a schematic diagram viewed from the side, and Figure 2 is a schematic diagram viewed from above. As shown in Figures 1 and 2, the deck slab transport system 100 includes a lifting device 10 and a horizontal moving device 20. The deck slab transport system 100 shown in Figure 1 is used to transport deck slabs 40. Deck slabs 40 are used in highways, bridges, etc. Transporting deck slabs 40 includes removing one deck slab 40 from a state in which multiple deck slabs 40 are installed, as shown in Figure 1, and transporting it out. Transporting deck slabs 40 also includes transporting a new deck slab 40 into the empty space R (installation area AR) from which the deck slab 40 was removed. In this embodiment, multiple deck slabs 40 are arranged along a horizontal plane. The upper surfaces of the multiple deck slabs 40 and the upper surfaces of roads, etc. connected to those upper surfaces can be used as work surfaces 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 has a frame 11, a suspension mechanism 12, and a control unit 13. Note that the frame 11 and the control unit 13 are not shown in Figure 2.

[0015] The frame 11 is, for example, a gate-type frame. The frame 11 has column sections 11a and beam sections 11b. The column sections 11a are, for example, arranged at two locations spaced apart horizontally and supported on the work surface S. The beam sections 11b connect the upper parts of the column sections 11a. The frame 11 may also be movable horizontally on the work surface S.

[0016] The suspension mechanism 12 is provided on the beam section 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 the lower end is provided with a locking part such as a hook for suspending the floor slab 40. For example, multiple wires 14 are provided in parallel. The wire drive mechanism 15 pays out and retracts the wire 14. The wire drive mechanism 15 is capable of synchronously paying out and retracting multiple wires 14. By retracting and paying out the wire 14 using the wire drive mechanism 15, the suspension mechanism 12 is capable of raising and lowering the floor slab 40, which is suspended from the lower end of the wire 14, along a predetermined track D. The suspension mechanism 12 may also 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 orientation of the floor slab 40 can be adjusted while the floor slab 40 is suspended. The suspension mechanism 12 may also be movable horizontally along the beam portion 11b.

[0017] The control unit 13 controls the operation of the suspension mechanism 12. Specifically, the control unit 13 controls the unwinding and winding operations 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 includes a base member 21, wheels 22, a drive mechanism 23, and a control unit 24. Note that the control unit 24 is not shown in Figure 2.

[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 a work surface S that is aligned with the horizontal plane. The wheels 22 are provided at least three locations on the base member 21, and in this embodiment, at four locations.

[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 part that connects the four wheels 22 in a straight line when viewed from above. The support portion 21a is formed to protrude horizontally from the base portion 21b. In this way, the horizontal movement device 20 has the configuration of a so-called cantilever bogie.

[0021] In the base member 21, a rotation mechanism 30 is provided in the support portion 21a. The rotation mechanism 30 includes a turntable 31 and a turn drive mechanism 32. The turntable 31 is rotatable around 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 longitudinal orientation of the floor slab 40 can be adjusted. The turntable 31 may also be movable in the longitudinal and transverse directions of the base member 21.

[0022] The drive mechanism 23 drives the wheels 22. When the wheels 22 are placed on the work surface S, the drive mechanism 23 drives the wheels 22, causing them to roll on the work surface S. The rolling of the wheels 22 allows the horizontal movement device 20 to move along the horizontal plane. The drive mechanism 23 is positioned on the base portion 21b of the base member 21. A counter mass or the like may be positioned on the base portion 21b to prevent the support portion 21a from tilting downward due to the weight when the floor slab 40 is placed on the support portion 21a.

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

[0024] Next, a method for transporting floor slabs using the floor slab transport system 100 configured as described above will be explained. First, a method for transporting floor slabs when removing floor slabs 40 using the floor slab transport system 100 will be explained. Figure 3 is a flowchart showing an example of a floor slab transport method when removing floor slabs 40 using the floor slab transport system 100. As shown in Figure 3, this floor slab transport method includes a lifting process S10, a waiting process S20, a handover process S30, an orientation adjustment process S40, and a removal process S50. Each process will be explained below with reference to Figures 4A to 8B.

[0025] In the lifting process S10, the floor slab 40 to be removed is suspended and lifted by the lifting device 10 of the floor slab transport system 100. Figures 4A and 4B show an example of the lifting process. In the lifting process S10, first, the lower end of the wire 14 is secured to the floor slab 40. From this state, the wire 14 is wound up by the wire drive mechanism 15, and the floor slab 40 is lifted by the wire 14 as shown in Figures 4A and 4B. In the lifting process 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 transport system 100. By lifting the floor slab 40, an empty space R is created in the area where the floor slab 40 was installed. This empty space R is used as an installation area AR for installing a new floor slab 40, which will be described later.

[0026] The standby process S20 involves moving the horizontal movement device 20 to a standby position P below the raised floor slab 40 and placing it in standby mode. Figures 5A and 5B show an example of the standby process. In the standby process 20, the drive mechanism 23 drives the wheels 22 to move the horizontal movement device 20 so that the support portion 21a of the base member 21 is positioned below the floor slab 40, as shown in Figures 5A and 5B. In this embodiment, since the support portion 21a of the base member 21 protrudes from the base portion 21b, the support portion 21a can be positioned above the empty space R while the base portion 21b is positioned at the periphery of the empty space R.

[0027] In the transfer process S30, the floor slab 40 is lowered by the lifting device 10 and supported by the horizontal moving device 20, and the suspension by the lifting device 10 is released. Figures 6A and 6B show an example of the transfer process. In the transfer process S30, as shown in Figures 6A and 6B, the floor slab 40 is lowered and placed on the turntable 31 located on the support part 21a of the horizontal moving device 20. After that, the suspension is released by removing the lower end of the wire 14 from the floor slab 40.

[0028] The orientation adjustment step S40 adjusts the longitudinal orientation of the floor slab 40 by rotating it around the vertical axis AX. Figures 7A and 7B show an example of the orientation adjustment step. In the orientation adjustment step S40, as shown in Figures 7A and 7B, the floor slab 40 is rotated around the vertical axis AX by rotating the turntable 31 around the vertical axis AX. The longitudinal orientation of the floor slab 40 can be adjusted by adjusting the amount of rotation of the turntable 31. In the orientation adjustment step S40, for example, the turntable 31 is rotated so that the longitudinal orientation of the floor slab 40 matches the direction of movement of the horizontal movement device 20.

[0029] In the removal process S50, the horizontal movement device 20 is moved from the standby position P to a position on the horizontal plane while the floor slab 40 is supported. Figures 8A and 8B show an example of the removal process. In the removal process S50, as shown in Figures 8A and 8B, the horizontal movement device 20 is moved along the horizontal plane by driving the wheels 22 on the work surface S with the drive mechanism 23. In the orientation adjustment process S40 described above, the longitudinal orientation of the floor slab 40 is aligned with the direction of movement of the horizontal movement device 20, allowing the floor slab 40 to be moved compactly.

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

[0031] In the loading process S110, the horizontal moving device 20 of the floor slab transport system 100 is moved along a horizontal plane while the floor slab 40 is supported by the support portion 21a of the horizontal moving device 20, and the floor slab 40 is positioned above the installation area AR where the floor slab 40 will be installed. Figures 10A and 10B show an example of the loading process. In the loading process S110, the floor slab 40 is placed on a turntable 31 positioned on the support portion 21a of the horizontal moving device 20, and the longitudinal orientation of the floor slab 40 is aligned with the direction of movement of the horizontal moving device 20. From this state, as shown in Figures 10A and 10B, the wheels 22 are driven by the drive mechanism 23, which moves the horizontal moving device 20 along the horizontal plane on the work surface S, and the floor slab 40 can be positioned above the installation area AR. In other words, in this embodiment, since the support portion 21a of the base member 21 protrudes from the base portion 21b, the support portion 21a can be positioned above the installation area AR while the base portion 21b is positioned at the periphery of the installation area AR on the work surface S.

[0032] The orientation adjustment step S120 adjusts the longitudinal orientation of the floor slab 40 by rotating it around the vertical axis AX. Figures 11A and 11B show an example of the orientation adjustment step. In the orientation adjustment step S120, as shown in Figures 11A and 11B, the floor slab 40 is rotated around the vertical axis AX by rotating the turntable 31 around the vertical axis AX. The longitudinal orientation of the floor slab 40 can be adjusted by adjusting the amount of rotation of the turntable 31. 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 when it is installed in the installation area AR.

[0033] In the lifting process S130, the floor slab 40, which is positioned above the installation area AR, is suspended and lifted by the lifting device 10 of the floor slab transport system 100. Figures 12A and 12B show an example of the lifting process. In the lifting process S130, as shown in Figures 12A and 12B, the floor slab 40 leaves the horizontal movement device 20 and is handed over to the lifting device 10.

[0034] The retraction process S140 involves retracting the horizontal movement device 20 from above the installation area AR after the lifting process S130. Figures 13A and 13B show an example of the retraction process. In the retraction process S140, as shown in Figures 13A and 13B, the horizontal movement device 20 is moved along the horizontal plane by driving the wheels 22 with the drive mechanism 23.

[0035] In the lowering process S150, after the retraction process S140, the lifting device 10 lowers the floor slab 40 to position it in the installation area AR. Figures 14A and 14B show an example of the lowering process. In the lowering process S150, the longitudinal orientation of the floor slab 40 is adjusted in the orientation adjustment process S120 to match the longitudinal orientation of the floor slab 40 when it is installed in the installation area AR, so that the floor slab 40 can be properly installed in the installation area AR as shown in Figures 14A and 14B.

[0036] As described above, the slab transport system 100 according to this embodiment includes a lifting device 10 that suspends and raises the 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 part 21a that supports the slab 40, and is capable of moving the support part 21a back and forth on the track D of the slab 40 that is raised and lowered by the lifting device 10.

[0037] In this configuration, the lifting device 10 can raise and lower the floor slab 40, and the horizontal moving device 20 can move the floor slab 40 along a horizontal plane. Furthermore, by moving the support part 21a back and forth on the track D of the floor slab 40 being raised and lowered by the lifting device 10, the floor slab 40 can be transferred between the lifting device 10 and the horizontal moving device 20. In this way, the lifting device 10 and the horizontal moving device 20, which are provided separately, allow for the proper removal of the floor slab 40 and the installation of a new floor slab 40. In this configuration, since the horizontal moving device 20 and the lifting device 10 are provided separately, they can be installed, disassembled, and reassembled individually, compared to a device in which the horizontal moving device 20 and the lifting device 10 are integrated, thus reducing the size of the equipment. This allows for a shortening of the construction schedule.

[0038] In the deck slab transport system 100 according to this embodiment, the horizontal movement device 20 includes a base member 21 including a support portion 21a, and wheels 22 that support the base member 21 and roll along a work surface S that is aligned with the horizontal plane.

[0039] With this configuration, the horizontal movement device 20 can be easily moved by rolling the wheels 22 on the work surface S.

[0040] In the slab transport system 100 according to this embodiment, the base member 21 includes a base portion 21b supported by wheels 22, and the support portion 21a is formed to protrude horizontally from the base portion 21b.

[0041] With this configuration, the support portion 21a is formed to protrude horizontally from the base portion 21b, resulting in a so-called cantilevered trolley configuration. Therefore, the support portion 21a can be positioned above the installation area AR without the base portion 21b interfering with the installation area AR.

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

[0043] With this configuration, the longitudinal orientation of the floor slab 40 can be adjusted by rotating the floor slab 40 around the vertical axis AX, allowing for high-precision positioning relative to the installation area AR.

[0044] In the slab transport system 100 according to this embodiment, the rotating mechanism 30 has a turntable 31 that is provided on the support portion 21a of the horizontal moving device 20 and is capable of supporting the slab 40 and rotating.

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

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

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

[0048] The floor slab transport method according to this embodiment includes a lifting step S10 in which the floor slab 40 is suspended and lifted by the lifting device 10 of the floor slab transport system 100; a waiting step S20 in which the horizontal movement device 20 of the floor slab transport system 100 is moved to a waiting position P below the lifted floor slab 40 and put into standby mode; a handover step S30 in which the floor slab 40 is lowered by the lifting device 10 and supported by the horizontal movement device 20, and the suspension by the lifting device 10 is released; and a transport step S50 in which the horizontal movement device 20 is moved away from the standby position P while the floor slab 40 is being supported.

[0049] With this configuration, the floor slab 40 can be appropriately and efficiently transported out of the installation area AR using a floor slab transport system 100 in which a lifting device 10 and a horizontal moving device 20 are provided separately.

[0050] In the deck slab transport method according to this embodiment, the method further includes a direction adjustment step S40 in which the deck slab 40 is rotated around the axis of the vertical axis AX to adjust the longitudinal orientation of the deck slab 40 before the transport step S50 is performed.

[0051] This configuration allows for adjustment of the longitudinal orientation of the floor slab 40, thereby making the transport trajectory of the floor slab 40 more compact.

[0052] The floor slab transport method according to this embodiment includes a transport step S110 in which the horizontal movement device 20 of the floor slab transport system 100 is moved with the floor slab 40 supported by the horizontal movement device 20 and the floor slab 40 is positioned above the installation area AR on the work surface S; a lifting step S130 in which the lifting device 10 of the floor slab transport system 100 is used to suspend and lift the floor slab 40 positioned above the installation area AR; a retreat step S140 in which the horizontal movement device 20 is moved away from above the installation area AR after the lifting step S130; and a lowering step S150 in which the lifting device 10 is used to lower the floor slab 40 and position the floor slab 40 in the installation area AR after the retreat step S140.

[0053] With this configuration, the floor slab 40 can be appropriately and efficiently positioned relative to the installation area AR using a floor slab transport system 100 in which a lifting device 10 and a horizontal movement device 20 are provided separately.

[0054] In the deck slab transport method according to this embodiment, before performing the lowering step S150, the method further includes a direction adjustment step S120 in which the deck slab 40 is rotated around the axis of the vertical axis AX to adjust the longitudinal orientation of the deck slab 40.

[0055] This configuration allows for adjustment of the longitudinal orientation of the floor slab 40, enabling high-precision positioning relative to the installation area AR.

[0056] The technical scope of the present invention is not limited to the embodiments described above, and modifications can be made as appropriate without departing from the spirit of the invention. For example, in the above embodiments, the horizontal movement device 20 was described as having a configuration in which wheels 22 that roll on a work surface S, but the invention is not limited to this configuration. For example, a rail may be formed on the work surface S so as to straddle an empty space R (installation area AR), and the device may move along the rail. [Explanation of symbols]

[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 movement device 21…Base component 21a...Support part 21b...Base 22...Wheel 23…Drive mechanism 30…Rotation mechanism 31... Turntable 32... Turn drive mechanism 40…Floor slab 100... Deck slab transport system AR…Installation area AX...Vertical axis D... Orbit P…Standby position R...empty space S…Work surface

Claims

1. A lifting device that suspends and raises the floor slab, A horizontal moving device is installed separately from the aforementioned lifting device, is movable along a horizontal plane, has a support part that supports the floor slab, and is capable of moving the support part back and forth on the track of the floor slab that is raised and lowered by the lifting device. A deck slab transport system equipped with the following features.

2. The horizontal movement device comprises a base member including the support portion and wheels that support the base member and roll along a work surface aligned with the horizontal plane. The slab transport system according to claim 1.

3. The base member includes a base supported by the wheel, and the support portion is formed to protrude horizontally from the base. The slab transport system according to claim 2.

4. At least one of the lifting device and the horizontal moving device has a rotation mechanism that rotates the floor slab around the axis of the vertical axis. The slab transport system according to claim 1.

5. The rotation mechanism has a turntable that is provided on the support portion of the horizontal moving device and is rotatable while supporting the floor slab. The slab transport system according to claim 3.

6. The turntable is movable on the base member. The slab transport system according to claim 5.

7. A lifting step of suspending and lifting the floor slab using the lifting device of the floor slab transport system described in claim 1, A waiting step involves moving the horizontal movement device of the floor slab transport system to a waiting position below the lifted floor slab and putting it into standby mode. A transfer process in which the floor slab is lowered by the lifting device and supported by the horizontal moving device, and the suspension by the lifting device is released, A removal process in which the horizontal moving device is moved away from the standby position while the floor slab is supported. A method for transporting floor slabs, including the method described above.

8. Prior to the aforementioned removal process, the process further includes a direction adjustment step in which the floor slab is rotated around the vertical axis to adjust its longitudinal orientation. The method for transporting a slab according to claim 7.

9. A transport step of moving the horizontal moving device of the floor slab transport system according to claim 1, with the floor slab supported by the support portion of the horizontal moving device, and positioning the floor slab above the installation area where the floor slab will be installed, The lifting process involves using the lifting device of the floor slab transport system to suspend and lift the floor slab, which is positioned above the installation area, After the lifting step, a retraction step is performed to move the horizontal moving device away from above the installation area, After the aforementioned retraction step, a lowering step is performed in which the floor slab is lowered by the lifting device and placed in the installation area. A method for transporting floor slabs, including the method described above.

10. Prior to performing the aforementioned lowering step, the process further includes a direction adjustment step in which the floor slab is rotated around the vertical axis to adjust the longitudinal orientation of the floor slab. The method for transporting a slab according to claim 9.

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