JP7435025B2 - Mechanical gantry and roof construction method - Google Patents

Description

The present invention relates to a mechanical gantry used for constructing a folded plate roof and a roof constructing method using the same.

A folded plate roof is formed by arranging folded plates formed from steel plate rolls in a forming machine as a roof. During this construction, a forming machine may be placed near the end of the folded plate (roof) (for example, see Patent Documents 1 and 2).

In Patent Document 1, a movable work stand is installed outside a building, and a molding machine is placed on the movable installation stand that is movable on the work stand. Further, Patent Document 2 describes a folded plate conveying device that conveys a folded plate formed by extrusion from a forming machine without moving the forming machine.

JP2019-31800A Japanese Patent Application Publication No. 2015-59349

Depending on the shape of the roof, such as a sloping roof or a roof with steps, the folded plates may not be at the same height. In this case, the folded plates formed by the forming machine are lifted up and lowered and arranged using the folded plate conveying device described in Patent Document 2 or manually. Therefore, the work of arranging the folded plates was complicated and the construction time was long.

A mechanical gantry for solving the above problem is a mechanical gantry on which a forming machine for forming folded plates constituting a folded plate roof from steel plate rolls is mounted, and the mechanical gantry is moved in the width direction of the folded plates. a mounting table having a mounting surface on which the molding machine is placed; and an elevating mechanism that raises and lowers the mounting table , and the elevating mechanism is configured to move the molding machine placed on the mounting table. A plurality of devices are arranged spaced apart at at least four corners outside the position of the machine, the device changes the height of the mounting surface while maintaining the horizontal state of the mounting surface, and the moving mechanism By operating the forming machine, the forming machine is moved to a position in the width direction corresponding to the arrangement position of the folded plate, and by operating the lifting mechanism, the forming machine is moved to a height corresponding to the arrangement position of the folded plate. Arrange the writing table .

Further, a roof construction method for solving the above problem is a roof construction method for constructing the folded plate roof using a mechanical gantry movable in the width direction of the folded plates constituting the folded plate roof, comprising: The machine gantry includes a moving mechanism that moves the machine gantry in the width direction of the folded plate, a mounting surface on which a forming machine for forming the folded plate from a steel plate roll is placed , and the mounting base. and a lifting mechanism for lifting and lowering the molding machine, and the lifting mechanism is a plurality of devices that are arranged spaced apart at at least four corners of the mounting table outside the position of the molding machine on which the molding machine is placed, and The device changes the height of the mounting table while maintaining the horizontal state of the mounting surface, and by operating the moving mechanism, the molding machine is moved to a position in the width direction corresponding to the arrangement position of the folded plate. By moving the folding plate and operating the elevating mechanism, the mounting base is arranged at a height corresponding to the arrangement position of the folded plate.

According to the present invention, folded plates can be efficiently arranged on a roof.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram illustrating the structure of a roof constructed in an embodiment, in which (a) is a perspective view of a main part of a building, and (b) is a perspective view illustrating the width direction of folded plates arranged on the roof. FIG. 1 is a schematic side view of a roof construction system in an embodiment. FIG. 1 is a schematic top view of a roof construction system in an embodiment. FIG. 2 is a perspective view illustrating running rails arranged on beams that constitute a building in an embodiment. FIG. 2 is a front cross-sectional view illustrating running rails arranged on beams constituting a building in an embodiment. FIG. 3 is a top view of the material transport gantry in the embodiment. FIG. 3 is a side view of the material transport gantry in the embodiment. FIG. 3 is a front view of the material transport gantry in the embodiment. The perspective view of the crane gantry in an embodiment. The top view of the crane gantry in an embodiment. FIG. 3 is a side view of the crane gantry in the embodiment. FIG. 2 is an enlarged side view of the main parts of the crane gantry in the embodiment. The front view of the crane gantry in an embodiment. FIG. 2 is an enlarged front view of main parts of the crane gantry in the embodiment. A perspective view of a machine gantry in an embodiment. FIG. 3 is a top view of the machine gantry in the embodiment. The front view of the machine gantry in an embodiment. FIG. 3 is an enlarged front view of the main parts of the machine gantry in the embodiment. FIG. 3 is a side view of the machine gantry in the embodiment. FIG. 2 is a front sectional view illustrating a chain block and a lifting stage in an embodiment. FIG. 2 is an explanatory diagram illustrating the main parts of the elevating stage in the embodiment, in which (a) is a top view, (b) is a side view, and (c) is a rear view seen from the direction of line CC in (b); (d) shows the state at the start of the replacement of the falling support beam, (e) shows the state in the middle of replacement of the falling support beam, and (f) shows the state just before the end of the replacement of the falling support beam. FIG. 3 is a side view of the machine gantry on an inclined plane in the embodiment. FIG. 3 is a side view of the machine gantry on an inclined plane in the embodiment. FIG. 3 is a side view of the machine gantry on an inclined plane in the embodiment.

An embodiment of a machine gantry and a roof construction method will be described below with reference to FIGS. 1 to 24. In this embodiment, a folded plate roof is constructed using a roof construction system including a mechanical gantry. Note that the same configurations are denoted by the same reference numerals, and detailed explanations of the configurations will be omitted.

As shown in FIG. 1(a), the roof 21 of the building 20 has a sloped roof area 24 arranged between (center) sawtooth roof areas 22 and 23 as a first roof area and a second roof area. configured. In the sawtooth roof areas 22 and 23, folded plates having a slope that is higher in one direction are periodically and repeatedly arranged. Further, the sawtooth roof regions 22 and 23 have a slope that is high at the center and low at both ends in a direction perpendicular to the direction in which the slope is periodically repeated.
Each of the sawtooth roof regions 22 and 23 is a folded plate roof in which a plurality of folded plates are arranged with their ends overlapped in the width direction of the folded plates. Here, FIG. 1(b) shows a part of the arranged folded plate FD1 in an enlarged manner. As shown in this figure, the width direction of the folded plate FD1 corresponds to the longitudinal direction of the sloped roof region 24 in this embodiment. Note that the folded plate is a plate member having one or more uneven shapes.
Furthermore, as shown in FIG. 1(a), in this embodiment, the height (vertical position) of the folded plates arranged in each of the sawtooth roof regions 22, 23 gradually increases. The slanted roof region 24 is disposed between the ends of the sawtooth roof regions 22 and 23 and has a sloped surface so that rainwater etc. from the sawtooth roof regions 22 and 23 can flow down from the ends. In this embodiment, before constructing the roof in the pitched roof region 24, a roof construction system is placed in this region and the folded plate roof is constructed in the sawtooth roof regions 22, 23. For this purpose, the sloped roof area 24 is used as a working area for the roof construction system.

As shown in FIG. 2, the building 20 has a plurality of columns 25a, 25b and beams 22b, 24b, 24c. Column 25a supports beams 24b, 24c of pitched roof area 24, and column 25b supports beam 22b of sawtooth roof area 22. The beams 22b, 24b, and 24c are permanent beams that constitute the building 20.

The roof construction system 100 includes a material transport gantry 30, a crane gantry 40, and a machine gantry 50. The material transport gantry 30, the crane gantry 40, and the machine gantry 50 are arranged so as to be movable with the longitudinal direction of the sloped roof area 24 as the movement direction D1.

The machine gantry 50 carries a forming machine M1 that forms folded plates to be placed in the saw roof areas 22 and 23. The material transport gantry 30 transports a steel plate roll (material) R1 used in the forming machine M1 from the material lifting area 26 to the vicinity of the machine gantry 50. A steel plate roll R1 placed on the ground in the material lifting area 26 is loaded onto the material transport gantry 30 using a crane (not shown) outside the building. The crane gantry 40 mounts the crane CL1. The steel plate roll R1 placed on the material transport gantry 30 is transferred to the forming machine M1 of the machine gantry 50 by this crane CL1. Therefore, the material transport gantry 30, the crane gantry 40, and the machine gantry 50 are arranged in this order from the material lifting area 26 side of the building 20. Further, the crane gantry 40 and the machine gantry 50 are provided with an adjustment mechanism that adjusts the inclination of the mounting surface of the molding machine M1 and the crane CL1. Further, the machine gantry 50 includes an elevating mechanism that raises and lowers the mounting surface on which the molding machine M1 is mounted.

As shown in FIG. 3, in this embodiment, five beams 24b extend in parallel in the moving direction D1 in the sloped roof region 24. A traveling rail 27 is fixed on the three central beams 24b among these beams 24b along the beams 24b. Further, in the sloped roof region 24, a beam 24c is arranged perpendicularly to the beam 24b so as to span the adjacent beam 24b.

As shown in FIG. 4, a traveling rail 27 is removably placed and fixed on the central beam 24b. When the beam 24b is inclined, the running rail 27 is arranged to be inclined according to this inclination.

As shown in FIG. 5, the traveling rail 27 is a long article having a groove with a U-shaped cross section and an open top.
As shown in FIG. 4, a plurality of protruding plates 28 are fixed to the outer surface of both sides of the traveling rail 27 at intervals in the moving direction D1. This protruding plate 28 extends below the traveling rail 27. An outer end of a locking plate 29 is fixed to the lower end of the protruding plate 28 with bolts and nuts. This locking plate 29 comes into contact with the lower surface of the upper flange of the beam 24b.

(Configuration of material transport gantry 30)
Next, the configuration of the material transport gantry 30 will be explained using FIG. 3 and FIGS. 6 to 8.
As shown in FIG. 3, the material transport gantry 30 is arranged on two adjacent running rails 27, and runs on the running rails 27 in the moving direction D1.

As shown in FIG. 6, the material transport gantry 30 has a structure that is symmetrical with respect to the center line C1 of the two traveling rails 27. The material transport gantry 30 includes running sections 31 running on the running rails 27 at four corners.

As shown in FIG. 7, the running section 31 includes a mounting block 31a and a rotating section 31b provided at the lower end of the mounting block 31a. The rotating part 31b is, for example, a Chill Tank (registered trademark), and is an endless roller for moving heavy objects that has a plurality of cylindrical bodies connected in parallel and rotates like an endless track.

As shown in FIG. 6, on the two traveling parts 31, a large puller 33 extending in the moving direction D1 is arranged. A chill climber TC1 and a sheave S1 are attached to the inside of the main drawer 33 via attachment members P1 and P2, respectively.

The chill climber TC1 is an endless type electric winch that can be towed back and forth. Sheave S1 is a pulley that changes the direction of wire W3 from chill climber TC1. The wire W3 is arranged inside the two running rails 27 on which the material transport gantry 30 is supported, and substantially parallel to the running rails 27. The wire W3 extends from end to end in the extending direction of the sloped roof region 24. By relatively pulling the wire W3 by the chill climber TC1, the material transport gantry 30 moves along the traveling rail 27.

One end portion of two flint braces B1 is fixed to the upper surface of the center of each large puller 33.
Furthermore, as shown in FIG. 7, two support beams 36 are fixed onto the ends of the large pulley 33 via auxiliary pieces P3. The auxiliary piece P3 has a height corresponding to the thickness of the flint brace B1.

As shown in FIG. 8, the support beams 36 connect the opposing ends of the main pull-outs 33 to each other.
As shown in FIG. 6, the other end of the flint brace B1 is fixed to the lower surface of the support beam 36. The flint brace B1 is fixed in an oblique shape with respect to the main drawer 33 and the receiving beam 36 orthogonal thereto.

The ends of two mounting beams 37 are fixed to the center of the receiving beam 36. The attachment beams 37 are arranged at intervals according to the width of the steel plate roll R1. A roll holding portion 38 whose end portion is fixed to a fixture 39 is provided between the mounting beams 37 . The roll holding section 38 is made of a flexible net or cloth, and holds the steel plate roll R1 in a bent state.

(Configuration of crane gantry 40)
Next, the configuration of the crane gantry 40 will be explained using FIG. 3 and FIGS. 9 to 14. Here, FIGS. 9 to 11 and FIG. 13 are a perspective view, a top view, a front view, and a side view of the crane gantry 40, and FIGS. 12 and 14 are main parts of the front view and side view of the crane gantry 40. FIG. Moreover, in FIGS. 9 and 10, the crane CL1 is omitted.

As shown in FIG. 3, the crane gantry 40 is arranged on two adjacent running rails 27 and moves on the running rails 27. One of the running rails 27 on which the crane gantry 40 is supported is the same as the one on which the material transport gantry 30 is arranged.

As shown in FIG. 10, the crane gantry 40 has a symmetrical structure with respect to the center line C2 of the two traveling rails 27. The crane gantry 40 includes running sections 41 running on the running rails 27 at four corners.

As shown in FIG. 12, each traveling section 41, like the traveling section 31 of the material transport gantry 30, includes a mounting block 41a and a rotating section 41b constituted by a chill tank.
As shown in FIG. 11, the ends of the movable horizontal members 43 are fixed on top of each running section 41. The movable horizontal members 43 extend in the moving direction D1, and two movable horizontal members 43 are arranged side by side in the moving direction D1 with an interval between them.

A pin support PN1 is fixed on one end of each movable horizontal member 43 on the center side. Furthermore, a pin support PN2 is fixed on the other end of each movable horizontal member 43. The pin supports PN1 and PN2 have a structure in which the upper shoe and the lower shoe are connected by a cylindrical pin, and are rotatable in only one direction (rotation direction with the second direction D2 perpendicular to the plane of the paper as the central axis in FIG. 11). It is a fixed bearing.

Furthermore, as shown in FIG. 13, each movable horizontal frame member 43 is formed with a protrusion portion 43c that protrudes toward the opposing movable horizontal frame member 43 side (inside).
As shown in FIG. 14, this protrusion 43c has a length that defines a space in which a sheave S1 (and chill climber), which will be described later, can be accommodated. A restraint member P4 is provided at the inner center of the protrusion 43c. This restraining member P4 sandwiches a flange f1 of a post 49, which will be described later, and slides on the flange f1. Thereby, the restraining member P4 guides the movable horizontal member 43, which changes the relative height with respect to the support column 49 according to the inclination of the traveling rail 27.

Further, as shown in FIG. 10, a horizontal connecting member K1 is fixed to the movable horizontal member 43 to connect with the opposing movable horizontal member 43. The horizontal connecting members K1 have a K-shape and an inverted K-shape, respectively, and include a member that connects the movable horizontal members 43 to each other at the central end of the crane gantry 40, and a member that connects the movable horizontal members 43 to each other from the center of this member. It has two diagonal members facing toward.

Further, four jacks 44 are fixed on the pin support PN2 of the movable horizontal member 43 so as to align with the running section 41.
As shown in FIG. 11, each jack 44 is a hydraulic jack that functions as an adjustment mechanism and has a ram 44a that extends and contracts upward.

Furthermore, height sensors (not shown) are provided at the front end and the rear end of each movable horizontal member 43 to detect the height from the reference height. Then, the height of the end of the movable horizontal member 43 and the amount of inclination of the movable horizontal member 43 can be specified using the measured value from the height sensor.

A large puller 45 is arranged above the two movable horizontal members 43 aligned in the moving direction D1. Pin supports PN1 are fixed to the lower surface of the center portion of the main drawer 45 at two spaced apart positions.

As shown in FIG. 10, inside each large puller 45, a chill climber TC1 is attached to the machine gantry 50 side (front) via an attachment member P1, and a sheave S1 is attached to the material transport gantry 30 side (rear) via an attachment member. Attached via P2. The crane gantry 40 moves along the travel rail 27 by relatively pulling the wire W4 extending from end to end in the extending direction of the sloped roof region 24 by the chill climber TC1.

As shown in FIG. 11, two reaction support columns 46a and 46b are fixed to the upper surface of each end of the main puller 45 so as to sandwich the support beam 48 therebetween. The reaction struts 46a and 46b receive a reaction force corresponding to the expansion and contraction of the ram 44a of the jack 44. The reaction struts 46a and 46b have the same height as the support beam 48 fixed on the main drag 45 via the auxiliary piece P3. A reaction beam 47 is fixed to the upper surfaces of the reaction columns 46a, 46b and the receiving beam 48. The reaction beam 47 projects further in the movement direction D1 than the large puller 45, and the ram 44a of the jack 44 is fixed to the lower surface of the projecting side.

Therefore, when the crane gantry 40 is located on the inclined surface of the traveling rail 27, the ram 44a of the jack 44 on the movable horizontal member 43 inclined along the inclined surface is expanded and contracted, and the end of the reaction beam 47 is Make the heights almost the same. In this case, since the heights of the ends of the two support beams 48 are approximately the same, the outrigger OT1 of the crane CL1 placed on the support beam 48 is installed on a substantially horizontal plane.

As shown in FIG. 9, one end portion of two flint braces B1 is fixed to the upper surface of the center of each large puller 45.
As shown in FIG. 11, a support beam 48 is fixed onto the end of the main puller 45 via an auxiliary piece P3. The support beams 48 connect the opposing ends of the large pullers 45 to each other. The other end of the flint brace B1 is fixed to the lower surface of the support beam 48.

As shown in FIG. 13, struts 49 are fixed to the lower surface of the support beam 48 at positions apart from each end so as to correspond to the protrusions 43c. The support column 49 is made of H-beam steel.
As shown in FIG. 14, a restraining member P4 of the movable horizontal member 43 is fitted into a part of the flange f1 located on the outside of the support column 49 so as to be movable up and down.

As shown in FIG. 13, one end of the brace B2 is rotatably fixed to the lower end of the support column 49. As shown in FIG. The other end of the brace B2 is rotatably fixed to the lower surface of the center of the support beam 48. On the support beam 48, an outrigger OT1 of the crane CL1 is fixed.

(Configuration of machine gantry 50)
Next, the configuration of the mechanical gantry 50 will be explained using FIG. 3 and FIGS. 15 to 21.
15 is a perspective view of the machine gantry 50, FIG. 16 is a top view of the machine gantry 50, FIG. 17 is a front view of the machine gantry 50, FIG. 18 is an enlarged view of the main parts in FIG. 17, and FIG. 19 is a side view of the machine gantry 50. It is a diagram. 20 is a front view of the main part of the chain block 65, which is the elevating mechanism of the machine gantry 50, seen from inside, and FIG. It is an explanatory view of a part. 16 and 17 show a half from the end to the center line C3, and a symmetrical member is provided on the opposite side. Further, in FIGS. 15 and 16, the foot plate 75 placed on the elevating frame 66 has been removed to show the structure of the machine gantry 50.

As shown in FIG. 3, the machine gantry 50 straddles the five beams 24b and travels on the three travel rails 27 and on the beams 24b at both ends. The mechanical gantry 50 has a line-symmetric structure with respect to the center line C3 and the center line C4. Here, the center line C3 is located at the center line of the beam 24b (traveling rail 27) arranged in the middle, and the center line C4 is located at the center of the second direction D2 orthogonal to the moving direction D1.

As shown in FIG. 16, the machine gantry 50 includes a plurality of running sections 51. Two traveling parts 51 are arranged on each traveling rail 27 and on the beam 24b.
As shown in FIG. 18, the traveling section 51, like the traveling section 41 of the crane gantry 40, includes a mounting block 51a and a rotating section 51b constituted by a chill tank.

As shown in FIG. 15, on the running part 51 running on the end beam 24b and on the running part 51 running on the adjacent running rail 27, there is an end of the connecting beam 52 extending in the second direction D2. part is fixed.

As shown in FIG. 18, the end of the movable horizontal member 53 is fixed to the connecting beam 52 at a distance L1 from the end and at a position on the traveling rail 27. A pillar 25b is located near the end beam 24b, and above the pillar 25b the roofs of the sawtooth roof regions 22, 23 are located. For this reason, in order to prevent the suspension struts 61 and the like provided on the movable horizontal member 53 from colliding with the roofs of the sawtooth roof regions 22 and 23, at a position separated by a distance L1 or more from the end of the running section 51. A movable horizontal member 53 is arranged. At this position, the two movable horizontal members 53 are arranged extending in the moving direction D1 and aligned.

Furthermore, as shown in FIG. 15, the ends of the extending movable horizontal member 53 are arranged above the two running parts 51 arranged on the central running rail 27.
As shown in FIG. 19, like the movable horizontal members 43 of the crane gantry 40, the movable horizontal members 53 extend in the moving direction D1, and are arranged in two rows in the moving direction D1 with an interval. . A pin support PN1 is fixed on one end of the center side of each movable horizontal member 53. Further, a pin support PN2 is fixed on the other end of the movable horizontal frame member 53 located above the portion of the connecting beam 52 to which the movable horizontal frame member 53 is connected and on the central traveling rail 27. The pin support PN2 is arranged at a distance L1 from the end of the running section 51 located on the end beam 24b, or directly above the running section 51 on the central running rail 27.

Furthermore, as shown in FIG. 18, each movable horizontal frame member 53 is formed with a protrusion portion 53c that protrudes toward the opposing movable horizontal frame member 53 side (inside). This protruding portion 53c has a length that defines a space in which a sheave S1 (and a chill climber), which will be described later, can be accommodated. At the center of the protruding portion 53c, a restraining member P4 is provided that slides by sandwiching a flange f1 of a support column 59, which will be described later. Thereby, the restraint member P4 guides the movable horizontal member 53, which changes the relative height with respect to the support column 59 fixed to the receiving beam 58, depending on the inclination of the beam 24b and the traveling rail 27.

Furthermore, as shown in FIG. 16, a horizontal connecting member K1 that connects with the adjacent movable horizontal member 53 is fixed to the movable horizontal member 53, similarly to the movable horizontal member 43 of the crane gantry 40.
Further, a jack 54 is fixed on each pin support PN2.
As shown in FIG. 19, like the jack 44, each jack 54 is a hydraulic jack that functions as an adjustment mechanism and has a ram 54a that expands and contracts upward.

Furthermore, height sensors (not shown) are provided at the front end and the rear end of each movable horizontal member 53 to detect the height from the reference height. Then, the height of the end of the movable horizontal member 53 and the amount of inclination of the movable horizontal member 53 can be specified using the measured value from the height sensor.

A large puller 55 is arranged above the two movable horizontal members 53 aligned in the moving direction D1. Pin supports PN1 are fixed to the lower surface of the central portion of the main drawer 55 at two spaced apart positions.

Furthermore, as shown in FIG. 16, inside the main drawer 55 corresponding to the connecting beam 52, the chill climber TC1 is attached to the front via the attachment member P1, and the sheave S1 is attached to the rear (crane gantry 40 side) via the attachment member. Attached via P2. The mechanical gantry 50 moves along the beam 24b and the running rail 27 by relatively pulling the wire W5 extending from end to end in the extending direction of the inclined roof region 24 by the chill climber TC1.

As shown in FIG. 3, the connecting beam 52 is located closer to the sawtooth roof areas 22 and 23 than the material transport gantry 30 and the crane gantry 40. Therefore, the wire W5 is arranged at a different position from the wires W3 and W4.

As shown in FIG. 19, a reaction support column 56 is fixed to the upper surface of each end of the puller 55, which receives a reaction force based on the expansion and contraction of the ram 54a of the jack 54. The reaction support column 56 has a height corresponding to the height of the support beam 58 fixed to the main puller 55 via the auxiliary piece P3. A reaction beam 57 is fixed to the upper surface of the reaction support column 56. The reaction beam 57 protrudes further in the moving direction D1 than the puller 55, and the ram 54a of the jack 54 is fixed to the lower surface of the protruding side.

Therefore, when the machine gantry 50 is located on the inclined surface of the beam 24b and the traveling rail 27, the ram 54a of the jack 54 expands and contracts to make the end portions of the reaction beams 57 approximately the same height. As a result, the heights of the ends of the two support beams 58 (the heights of the reference planes) are approximately the same, so that a plurality of hanging supports 61, which will be described later and are placed on top of the support beams 58, are placed on a substantially horizontal plane. will be installed in

One end portion of the two flint braces B1 is fixed to the upper surface of the center of each Obiki 55. A support beam 58 is fixed onto the end of the main drawer 55 via an auxiliary piece P3. The receiving beam 58 connects the opposing ends of the large pullers 55 to each other. The other end of the flint brace B1 is fixed to the lower surface of the support beam 58.

As shown in FIG. 18, struts 59 made of H-shaped steel are fixed to the lower surface of the support beam 58 at positions apart from each end so as to correspond to the protruding portions 53c. A restraining member P4 of the movable horizontal member 53 is fitted into a portion of the flange f1 of the support column 59 so as to be movable up and down.

As shown in FIG. 17, one end of the brace B2 is rotatably fixed to the lower end of the support column 59. As shown in FIG. The other end of the brace B2 is rotatably fixed to the lower surface of the center of the support beam 58.
On the other hand, as shown in FIG. 15, a plurality of hanging struts 61 are provided on the receiving beam 58 at positions that contact each of the reaction beams 57. The hanging strut 61 is made of H-beam steel.

As shown in FIG. 21(c), a plurality of holes 61a arranged in two rows are formed in the inner flange of each hanging column 61. The holes 61a are formed at predetermined intervals (for example, 100 mm) from the end of the hanging column 61.

As shown in FIG. 17, braces 62 are arranged in an X-shape between hanging struts 61 adjacent to each other in the second direction D2. This brace 62 connects the upper end of one suspension strut 61 and the lower end of the other adjacent suspension strut 61.

As shown in FIG. 15, auxiliary pieces P6 and P7 are provided at the upper end of the hanging column 61 on the outside and inside in the moving direction D1. Furthermore, a suspension beam 63 is fixed to the upper surface of the suspension column 61 and the upper surfaces of the auxiliary pieces P6 and P7. The suspension beam 63 connects the suspension columns 61 aligned in the moving direction D1.

A horizontal connection 64 is fixed to the lower surface of the outer auxiliary piece P6. The horizontal connection 64 connects the hanging struts 61 arranged in the second direction D2.
As shown in FIG. 19, a chain block 65 is suspended from the inner auxiliary piece P7. The chain block 65 functions as an elevating mechanism and suspends an elevating frame 66 serving as a mounting table.

Specifically, as shown in FIG. 20, the lower hook of the chain block 65 is hooked onto a shackle 67 suspended from an engaging portion 66a provided on the upper surface of the lifting frame 66. Then, by changing the chain length of the chain block 65, the elevating frame 66 is raised and lowered.

Ends of a plurality of small beams 68 are fixed to the lifting frame 66 at a distance. Each small beam 68 spans two elevating frames 66. An auxiliary piece P8 is provided on the lower surface of the elevating frame 66.

FIGS. 21(a) and 21(b) are a top view and a side view showing the configuration around the suspension support 61 and the lifting frame 66. Further, FIG. 21(c) is a cross-sectional view seen from the direction of line cc in FIG. 21(b). Note that FIGS. 21(d) to (f) are explanatory diagrams illustrating the movement of the falling receiving beam 71 during repositioning.

As shown in FIGS. 21(a) and 21(b), the small beams 68 are located on both sides of the hanging column 61. Further, an L-shaped fall prevention member 70 is fixed to the upper surface of the small beam 68. This fall prevention member 70 is also fixed to the elevating frame 66. The ends of the fall prevention member 70 on the side of the hanging column 61 are arranged so as to sandwich the hanging column 61 therebetween.

Then, as shown in FIG. 21(c), the falling support beam 71 is fixed to the hanging column 61 by a bolt passing through the hole 61a. The fall prevention member 70 is fixed by coming into contact with the upper surface of the fall support beam 71. The drop support beam 71 is provided with two fixing bolt holes 71a and two replacement bolt holes 71b. The two fixing bolt holes 71a are provided at positions corresponding to the two holes 61a of the hanging column 61, and are used when locking the fall prevention member 70 in a horizontal state. The replacement bolt hole 71b is the hole 61a one step above or the hole 61a one step below when the falling support beam 71 is rotated with one hole 61a and the fixing bolt hole 71a bolted together. It is located in a position that matches the

As shown in FIG. 15, a plurality of discrete small beams 73 are arranged between the two lifting frames 66 in parallel with the small beams 68. Further, a joist 74 is provided at the center of the two lifting frames 66 in parallel with the lifting frames 66. This joist 74 is fixed onto the small beams 68 and 73.

As shown in FIG. 19, a foot plate 75 is provided on the joist 74 and the lifting frame 66 as a mounting surface. A molding machine M1 is placed on this foot plate 75.
Further, a scaffold 60 is provided on the front side of the machine gantry 50, and a cloth board 60a of the scaffold 60 is fixed to a hanging column 61. This scaffold 60 is provided with a control device (not shown). The control device acquires a movement instruction including the movement direction and amount of movement of the machine gantry 50 and a lift instruction including the amount of elevation from the operation unit, and controls the chill climber TC1 of the machine gantry 50, the rotating part 51b of the traveling part 51, the jack 54, Controls chain block 65. The control device controls the chill climber TC1 and the rotating part 51b that constitute the moving mechanism to control the moving direction and the moving amount, and makes the foot plate 75 (placing surface) horizontal according to the inclination of the beam 24b at the moved position. The jack 54 is controlled so that the Further, the control device changes the height of the lifting frame 66 and the foot plate 75 (placement surface) by changing the length of the chain up to the lower hook of the chain block 65.

(Roof construction method)
Next, a roof construction method for arranging folded plates in the sawtooth roof regions 22 and 23 using the roof construction system 100 configured as described above will be described. Here, the folded plates are arranged in the order of the sawtooth roof area 23 on the front side and the sawtooth roof area 22 on the back side shown in FIG.

First, as shown in FIG. 2, in the building 20, the traveling rail 27 is placed on the beam 24b of the sloped roof area 24 before the roof is constructed.
Here, as shown in FIG. 4, the running rail 27 is arranged so as to fit between the beams 24c, and a locking plate 29 is attached to the lower end of the protruding plate 28, which is in contact with the lower surface of the upper flange of the beam 24b. Secure the ends. Then, each gantry (30, 40, 50) is arranged on the beam 24b and the traveling rail 27.

Next, as shown in FIG. 3, a movement instruction is input to the control device to move the machine gantry 50 so that the forming machine M1 corresponds to the arrangement position of the folded plate in the saw roof area 23. Then, in order to set the forming machine M1 to a height corresponding to the height of the folded plates to be placed, a lifting instruction is inputted to the control device, and the falling support beam 71 is removed. Next, the length of the chain of the chain block 65 is changed to raise and lower the elevating frame 66. In this case, the lifting frame 66 is guided by the fall prevention member 70 moving along the hanging support 61. When elevated to a desired height, the drop support beam 71 is placed under the fall prevention member 70, and the elevation frame 66 is fixed via the fall prevention member 70.

For example, as shown in FIG. 21(d), when raising the lifting frame 66, after lifting the lifting frame 66 to a desired height with the chain block 65, one of the fixing bolt holes 71a of the falling support beam 71 is Remove the bolt from. Then, the falling support beam 71 is rotated using the fixing bolt hole 71a fixed with a bolt as a fulcrum, as shown by the two-dot chain line. Further, the replacement bolt hole 71b adjacent to the fixing bolt hole 71a from which the bolt was removed is engaged with the hole 61a of the hanging support column 61 one step above to tighten the bolt.

Next, as shown in FIG. 21(e), remove the bolt from the other fixing bolt hole 71a, rotate the drop support beam 71, and rotate the suspension support two steps above, as shown by the two-dot chain line. 61 and bolted.

Then, as shown in FIG. 21(f), the bolt of the replacement bolt hole 71b that was tightened with the bolt is removed. Then, the falling support beam 71 is rotated to be in a horizontal state as shown by the two-dot chain line, and the fixing bolt hole 71a adjacent to the replacement bolt hole 71b is fixed to the hole 61a one step above. As a result of the above, the elevating frame 66 can be fixed at an interval of one hole 61a formed in the hanging column 61 (an interval of 200 mm). Then, by repeating the above-described operations, the falling support beam 71 is raised to an arbitrary height.

When the adjustment of the position and height of the folded plate is completed, the forming machine M1 is operated to form the steel plate roll R1 into a folded plate shape and arrange it in the sawtooth roof area 23.
Here, the traveling rail 27 and the beam 24b on which the machine gantry 50 of this embodiment runs are partially inclined in the moving direction D1. As shown in FIG. 22, when the machine gantry 50 is located on the inclined surface of the beam 24b, the control device uses the measured value from the height sensor to determine the front and rear height of each movable horizontal member 53. and identify the slope. Then, the control device extends the ram 54a of the jack 54 on the lower side of the slope and reduces the ram 54a of the jack 54 on the higher side of the slope, so that the height of the reaction beam 57 to which the ram 54a is fixed is increased. be the same. In this case, the lower shoe of the pin support PN1 of the movable horizontal member 53 rotates with respect to the puller 55 to maintain the puller 55 in a horizontal state. Furthermore, the restraining member P4 of the movable horizontal member 53 moves up and down along the flange f1 of the support column 59 to guide the lifting and lowering of the main puller 55. A plurality of hanging columns 61 installed on the support beam 58 placed on the main puller 55 are erected on a horizontal plane, and the same chain of the chain block 65 of the auxiliary piece P7 fixed to the hanging column 61 The foot plate 75 (mounting surface) of the elevating frame 66 suspended by its length is maintained in a horizontal state.

FIG. 23 shows a case where the machine gantry 50 reaches an inclined surface in which the center is lower and the front and back are higher than the center in the moving direction D1. Further, FIG. 24 shows a case where the machine gantry 50 reaches an inclined surface in which the center is higher and the front and back are lower than the center in the movement direction D1. In either case, the control device expands and contracts the ram 54a of the jack 54 according to the inclination, so that the main puller 55 and the support beam 58 are maintained in a horizontal state, and the elevating frame 66 on which the molding machine M1 is mounted is The foot plate 75 (placement surface) becomes horizontal.

Then, at the specified position and height of the machine gantry 50, the forming machine M1 forms and extrudes a folded plate using the steel plate roll R1, and arranges this folded plate in the saw roof area 23.
After that, if the deviation between the position of the forming machine M1 of the machine gantry 50 and the position where the folded plate is placed becomes large depending on the slope of the saw roof area 23, the movement and height of the machine gantry 50 are changed. do. Specifically, the molding machine M1 is stopped, the machine gantry 50 is moved to the position of the folded plate to be placed, and the height of the lifting frame 66 is adjusted to the height at which the folded plate is placed. Next, the forming machine M1 is operated again, and the folded plate formed from the steel plate roll R1 is placed in the saw roof area 23. Repeat this process.

When the steel plate rolls R1 of the machine gantry 50 are used up, the material transport gantry 30 on which the steel plate rolls R1 are stacked in the material lifting area 26 is moved to the vicinity of the machine gantry 50 by driving the chill climber TC1. Next, the crane CL1 of the crane gantry 40 disposed between the material transport gantry 30 and the machine gantry 50 is operated to transfer the steel plate roll R1 of the material transport gantry 30 to the machine gantry 50.

Here, when the crane gantry 40 is located on the inclined surface of the traveling rail 27, the height of the inclined surface is adjusted so that the height of the lower surface of all the reaction beams 47 in the crane gantry 40 is the same. The ram 44a of the jack 44 is expanded or contracted in accordance with the above. Here, in accordance with the expansion and contraction of the ram 44a, the lower foot of the pin support PN1 of the movable horizontal member 43 rotates with respect to the main puller 45, and the restraint member P4 of the movable horizontal member 43 is attached to the flange f1 of the support column 49. It moves up and down along the lines to guide the lift 45 up and down. The outrigger OT1 installed on the support beam 48 placed on the main puller 45 is erected on a horizontal surface, and the crane CL1 is maintained horizontally.

Then, the machine gantry 50 sequentially arranges the transferred steel sheet roll R1 and the folded plates formed using the forming machine M1 in the saw roof area 23.
Further, the material transport gantry 30, which has become empty after the steel plate roll R1 has been transferred, is moved to the vicinity of the material lifting area 26. Then, the steel plate roll R1 on the ground in the material lifting area 26 is newly loaded onto the material transport gantry 30. Repeat the above steps.

Thereafter, after completing the arrangement of the folded plates in the sawtooth roof region 23, the forming machine M1 is reversed and directed toward the sawtooth roof region 22. Then, similar to the arrangement of folded plates in the sawtooth roof region 23 described above, folded plates are arranged in the sawtooth roof region 22.

After completing the placement of the folded plates on the sawtooth roof areas 22 and 23 on both sides of the sloped roof area 24, the roof construction system 100 and the running rail 27 are removed from the sloped roof area 24, and the roof is constructed on the sloped roof area 24. .

(effect)
An elevating frame 66 on which a foot plate 75 is mounted as a mounting surface on which a forming machine M1 for forming folded plates is mounted is suspended by a chain block 65. By changing the length of the chain of the chain block 65, the elevating frame 66 is raised and lowered to change the height of the foot plate 75. Thereby, the height of the molding machine M1 can be efficiently changed, so the height of the molding machine M1 can be adjusted according to the height at which the folded plates are arranged.

According to this embodiment, the following effects can be obtained.
(1) In this embodiment, the roof construction system 100 includes a material transport gantry 30 and a machine gantry 50. The material transport gantry 30 transports the loaded steel plate roll R1 to the vicinity of the machine gantry 50 and transfers it to the machine gantry 50. The forming machine M1 of the machine gantry 50 forms a folded plate using the supplied steel plate roll R1 and places it in the saw roof area 23. Thereby, when the machine gantry 50 is located at a position that cannot be reached by a crane, the material transport gantry 30, which is easier to move than the machine gantry 50, is moved and the steel plate roll R1 is supplied to the machine gantry 50. Therefore, the steel plate roll R1 can be efficiently supplied to the forming machine M1, and the folded plate can be arranged in the sawtooth roof area 23. In addition, when forming folded plates in the forming machine M1 of the machine gantry 50, the material transport gantry 30 transports the steel plate roll R1 to the material lifting area 26, so the steel plate roll R1 is replenished in the forming machine M1. It can be done efficiently.

(2) This embodiment includes a crane gantry 40 on which the crane CL1 is placed. Thereby, the steel plate roll R1 transported by the material transport gantry 30 can be transferred to the machine gantry 50 using the crane CL1.

(3) In this embodiment, the crane gantry 40 on which the crane CL1 is placed is arranged between the material transport gantry 30 and the machine gantry 50. Thereby, since the crane CL1 is adjacent to the machine gantry 50 and the material transport gantry 30, the steel plate roll R1 can be transferred within a short operating range, and the crane CL1 can be made smaller.

(4) In this embodiment, the material transport gantry 30, the crane gantry 40, and the machine gantry 50 travel on the beam 24b of the sloped roof area 24 of the building 20. Accordingly, each gantry (30, 40, 50) is arranged on the building 20, so even if the space around the building 20 is small, the folded plates can be efficiently arranged on the roof.

(5) In this embodiment, the material transport gantry 30, the crane gantry 40, and the machine gantry 50 travel on the beam 24b of the building 20. Thereby, the load of the material transport gantry 30, the crane gantry 40, and the machine gantry 50 can be supported by the beam 24b of the building 20.

(6) In this embodiment, the traveling rail 27 having both side parts is fixed on the central beam 24b. Thereby, the material transport gantry 30, the crane gantry 40, and the machine gantry 50 can move while being guided by both sides of the traveling rail 27.

(7) In the present embodiment, the traveling rail 27 is constructed by using the projecting plate 28 extending downward and the locking plate 29 having an end fixed to this and abutting on the lower surface of the upper flange of the beam 24b. 24b. Thereby, the traveling rail 27 can be efficiently fixed and removed without drilling or other processing in the beam 24b for fixing.

(8) In this embodiment, the crane gantry 40 and the machine gantry 50 include jacks 44 and 54 as adjustment mechanisms. Thereby, even on an inclined surface, the molding machine M1 and the crane CL1 can be maintained in a horizontal state.

(9) In the present embodiment, the crane gantry 40 and the machine gantry 50 include two movable horizontal members 43, 53 that are connected by a pin at the center of the drawers 45, 55 and lined up in the moving direction D1. As a result, even when the center is low and the front and back are higher than the center, or when the center is high and the front and back are lower than the center, the main drawers 45, 55 and the support beams 48, 58 can be adjusted. Can be maintained horizontally.

(10) In the present embodiment, the restraining member P4 of the movable horizontal member 53 slides in the vertical direction on the flange f1 of the column 59 of the machine gantry 50. Thereby, when changing the relative height of the support column 59 with respect to the movable horizontal member 53 by expanding and contracting the ram 54a of the jack 54, the elevation of the support column 59 is guided, so that the height adjustment can be performed smoothly.

(11) In this embodiment, the wires W3 and W4 engaged with the chill climber TC1 are arranged inside the material transport gantry 30 and the crane gantry 40. The wire W5 of the machine gantry 50 is arranged outside the area where the material transport gantry 30 and the crane gantry 40 move. Thereby, the wires W3 to W5 can be arranged in different areas, and each gantry (30, 40, 50) can be smoothly moved.

(12) In this embodiment, in the connecting beam 52 of the machine gantry 50, the movable horizontal member 53, the main drawer 55, the suspension support 61, etc. are arranged at a position separated by a distance L1 or more from the end of the running section 51. . Thereby, the machine gantry 50 can be smoothly moved without coming into contact with the roof above the pillar 25b.

(13) In the present embodiment, the machine gantry 50 is configured to mount the molding machine M1 on the lifting frame 66 by changing the chain length of the chain block 65 suspended from the suspension support 61. The foot plate 75 as a surface is raised and lowered. Thereby, even when the height at which the folded plates are arranged changes in the sawtooth roof regions 22 and 23, the height of the forming machine M1 can be changed according to the arrangement position. Therefore, the folded plates extruded from the molding machine M1 can be smoothly arranged.

(14) In this embodiment, the fall prevention member 70 that sandwiches the hanging support 61 is fixed to the lifting frame 66. Thereby, when the elevating frame 66 is raised or lowered, the fall prevention member 70 moves along the hanging support 61, so that the elevating frame 66 can be smoothly raised or lowered.

(15) In this embodiment, the fall prevention member 70 fixed to the elevating frame 66 comes into contact with the upper surface of the fall support beam 71. Thereby, the height of the elevating frame 66 can be fixed.

This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- In the above embodiment, in the machine gantry 50, the chain block 65 is used as an elevating mechanism for suspending and elevating the mounting surface of the foot plate 75 on which the molding machine M1 is mounted. The elevating mechanism is not limited to the chain block 65, and for example, an elevating mechanism such as a jack that pushes up the mounting surface on which the molding machine M1 is placed may be used.

- In the above embodiment, the machine gantry 50 horizontally arranges the suspension support 61 that fixes the auxiliary piece P7 for suspending the chain block 65 by the adjustment mechanism. The adjustment mechanism of the machine gantry 50 is not limited to a mechanism that adjusts the mounting surface horizontally, as long as it adjusts the inclination of the mounting surface on which the molding machine M1 is mounted. For example, an adjustment mechanism that adjusts the inclination of the mounting surface using a structure that raises and lowers the mounting block of the traveling section 51 according to a height sensor, or a chain block that is a lifting mechanism may be used. Further, when the molding machine is arranged at an angle depending on the inclination of the folded plates arranged on the roof, an adjustment mechanism may be used to adjust the molding machine to maintain the inclined state. Specifically, when placing a heavy folded plate, the inclination of the mounting surface is adjusted so as to maintain an inclined surface corresponding to the inclination of the folded plate to be placed. In this case, the control device is made to memorize the inclination of the mounting surface, and the adjustment device is adjusted so as to achieve this inclination.

- In the above embodiment, in the connecting beam 52 of the machine gantry 50, the movable horizontal member 53 is arranged at a distance L1 from the end of the running section 51 that runs on the beam 24b adjacent to the sawtooth roof areas 22 and 23. did. If there is no obstructive part above the end of the machine gantry 50, a movable horizontal member 53, a drawer 55, etc. may be arranged above the running section 51 at the end.

- In the above embodiment, the control unit of the machine gantry 50 controls the horizontal position and vertical position (height) of the molding machine M1 via the operation unit, by controlling the amount of movement and the amount of elevation according to the height and position of the folded plate to be placed. was identified. The height may be automatically changed depending on the horizontal movement distance of the machine gantry 50 depending on the shape and slope of the roof on which the folded plate is placed. In this case, the control unit stores the height corresponding to the horizontal movement distance from the reference position of the machine gantry 50, and operates the lifting mechanism according to the measured horizontal movement distance to adjust the height of the molding machine M1. change.

- In the above embodiment, the running rail 27 on which the machine gantry 50 runs is provided on the beam 24b having an inclined portion, and is inclined in correspondence with this inclined portion. The beam on which the machine gantry 50 is movably arranged is not limited to a beam having an inclined portion, but may be a flat beam that is not inclined.

- In the above embodiment, height sensors are provided at the front end and rear end of each movable horizontal member 43, 53, and the inclination of the mounting surface is adjusted based on the measured value from the height sensor. did. The adjustment mechanism is not limited to a configuration in which the inclination of the mounting surface is adjusted using measured values from the sensor in response to instructions from the control device. For example, a worker manually measures the height of the ends of the pullers 45, 55 and support beams 48, 58, and adjusts the expansion and contraction of the rams 44a, 54a of the jacks 44, 54 based on the measured values. By doing so, the heights of the drawers 45, 55 and the support beams 48, 58 may be adjusted to adjust the inclination of the mounting surface.

Next, technical ideas that can be understood from the above embodiment and other examples will be additionally described below.
(a) The machine gantry is provided with a falling support beam that fixes the height of the mounting base and is removed when the mounting base is raised or lowered by the lifting mechanism. mechanical gantry.

(b) The machine gantry is connected by a connecting beam to a member located a predetermined distance from a running portion at an end in a horizontal direction perpendicular to the width direction of the folded plate. a) A mechanical gantry according to claim 1 or 2.

B1... Flint brace, B2, 62... Brace, C1, C2, C3, C4... Center line, CL1... Crane, D1... Moving direction, D2... Second direction, f1... Flange, FD1... Folded plate, K1... Horizontal connection Material, M1... Molding machine, OT1... Outrigger, P1, P2... Mounting member, P3, P6, P7, P8... Auxiliary piece, P4... Restraint member, PN1, PN2... Pin support, R1... Steel plate roll, S1... Sheave, TC1... Chill climber constituting the moving mechanism, W3, W4, W5... Wire, 20... Building, 21... Roof, 22, 23... Sawtooth roof area, 22b, 24b, 24c... Beam, 24... Sloped roof area, 25a, 25b ...Column, 26...Material lifting area, 27...Traveling rail, 28...Protruding plate, 29...Locking plate, 30...Material transport gantry, 31, 41, 51, 81...Traveling section, 31a, 41a, 51a...Mounting block , 31b, 41b, 51b...Rotating part constituting the moving mechanism, 33, 45, 55... Main puller, 36, 48, 58... Reception beam, 37... Mounting beam, 38... Roll holding part, 39... Fixture, 40 ...Crane gantry, 43, 53...Movable horizontal member, 43c, 53c...Protrusion, 44, 54...Jack as adjustment mechanism, 44a, 54a...Ram, 46a, 46b, 56...Reaction support column, 47, 57... Reaction beam, 49, 59... Support, 50... Machine gantry, 52... Connecting beam, 60... Scaffolding, 60a... Cloth board, 61... Suspension support, 61a... Hole, 63... Suspension beam, 64... Horizontal connection, 65... Chain block as a lifting mechanism, 66... Lifting frame as a mounting table, 66a... Engaging portion, 67... Shackle, 68, 73... Small beam, 70... Fall prevention member, 71... Fall support beam, 71a... Fixing 71b... bolt hole for replacement, 74... joist, 75... foot plate as a mounting surface, 100... roof construction system.

Claims (3)

A mechanical gantry on which a forming machine for forming folded plates constituting a folded plate roof from steel plate rolls is mounted,
a moving mechanism that moves the mechanical gantry in the width direction of the folded plate;
a mounting table having a mounting surface on which the molding machine is mounted;
Equipped with a lifting mechanism that lifts and lowers the above-mentioned mounting table ,
The elevating mechanism is a plurality of devices that are arranged at least four corners of the mounting table at least one spaced apart from each other outside the position of the molding machine to be mounted, and the elevating and lowering mechanism is a device that is arranged in plurality at a distance from each other at at least four corners outside the position of the molding machine on which the mounting surface is maintained. A device for changing the height of the above-mentioned mounting table,
By operating the moving mechanism, the forming machine is moved to a position in the width direction corresponding to the arrangement position of the folded plate, and by operating the lifting mechanism, the height is adjusted according to the arrangement position of the folded plate. A machine gantry, characterized in that the above-mentioned mounting stand is placed on the mount . The machine gantry according to claim 1, further comprising an adjustment mechanism that can adjust the inclination of the mounting surface to maintain the horizontal state of the molding machine on the mounting surface. A roof construction method for constructing the folded plate roof using a mechanical gantry movable in the width direction of the folded plates constituting the folded plate roof,
The mechanical gantry is
a moving mechanism that moves the mechanical gantry in the width direction of the folded plate;
a mounting table having a mounting surface on which a forming machine for forming the folded plate from a steel plate roll is mounted;
Equipped with a lifting mechanism that lifts and lowers the above-mentioned mounting table,
The elevating mechanism is a plurality of devices that are arranged at least four corners of the mounting table at least one spaced apart from each other outside the position of the molding machine to be mounted, and the elevating and lowering mechanism is a device that is arranged in plurality at a distance from each other at at least four corners outside the position of the molding machine on which the mounting surface is maintained. A device for changing the height of the above-mentioned mounting table,
By operating the moving mechanism, the forming machine is moved to a position in the width direction corresponding to the arrangement position of the folded plate, and by operating the lifting mechanism, the forming machine is moved to the position where the folded plate is arranged. A roof construction method characterized by arranging the above-mentioned mounting base at a corresponding height .