Heavy object movement device and heavy object movement method using the heavy object movement device

Abstract

To provide a heavy object movement device and a heavy object movement method using the heavy object movement device that allows easy transportation to a construction site and installation at the site.SOLUTION: A heavy object movement device comprises: traverse rails; a pair of gantry frames provided facing each other near both ends of the traverse rails; and a lifting mechanism that runs along the traverse rails. A heavy object movement method using the heavy object movement device to move heavy objects includes the steps of: deploying and installing gantry frames having shortened braces and connecting beams, in which the gantry frames comprise a pair of braces that can be expanded and contracted in the height direction, and the connecting beam that connects the upper ends of the braces and can be expanded and contracted in the longitudinal direction; lifting and moving a heavy object by making a heavy mechanism run along the traverse rails while the heavy object is suspended; and minimizing the unfolded gantry frames by shortening both the braces and the connecting beams.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a method for moving a heavy object using a heavy object moving device for lifting and moving the heavy object. and a heavy load moving device. [Background technology]

[0002] Conventionally, bridge deck installation involves replacing the existing deck installed on the I-shaped main girder with a new deck. When removing the existing deck in the replacement method, the first step is to determine the shape of the deck so that it can be loaded onto the loading platform of a transport vehicle. After this, the existing deck is cut into pieces using a lifting device such as a crane. A method is known in which the cut pieces are lifted and moved to the loading platform of a transport vehicle.

[0003] In this situation, in Patent Document 1, a removal member, which is part of the existing deck, is lifted by a girder-type lifting device. The method of removing the lifting device using the erection girder type lifting device is disclosed. First, the lifter is supported by four columns at the four corners of a rectangular platform in plan view. These are then loaded one by one onto the bed of a truck and transported to the construction site. The lifters are placed at intervals with the removal material in between, and the erection girders are attached to the platforms of each lifter. The lifting mechanism is installed on the erection girder so that it can move freely laterally.

[0004] The lifting mechanism of the erection girder type lifting device thus assembled is used to lift the existing deck, which is part of the existing deck. The removed member is removed from the road bridge by lifting it up, and the removed member is suspended and The lifting mechanism is moved horizontally along the erection girder. Meanwhile, one of the two lifters A transport vehicle is placed under one of the platforms, and the lifting mechanism moves along the erection girder to the bottom of the platform. Next, the removal member suspended by the suspension load mechanism is lowered onto the loading platform of the transport vehicle.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The erection girder type hoisting device described in Patent Document 1 uses a general device in the market, namely a lifter, and assembles by spanning an erection girder equipped with a suspension load mechanism thereon. This enables the removal work of the removal member to be carried out while omitting the labor and cost of manufacturing a dedicated device. It has become possible.

[0007] However, as described above, the lifter has a shape in which the four corners of a rectangular base in plan view are supported by four columns. When two such lifters are installed with the removal member sandwiched therebetween, a total of eight columns need to be installed. This requires space. Then, the area occupied by the erection girder type hoisting device at the construction site becomes large, so there are cases where it is difficult to secure an installation space depending on the construction site. This may occur.

[0008] In addition, the assembly work of installing two lifters at the construction site and spanning an erection girder equipped with a suspension load mechanism thereon is complicated. Also, since a plurality of freight trucks are required to transport these to the construction site, securing a place for these freight trucks to park and increasing transportation costs result in problems in terms of the construction period, construction cost, and workability.

[0009] The present invention has been made in view of such problems, and its main object is to provide a method for moving heavy objects and a heavy object moving device using a heavy object moving device that is easy to carry in and out of the site and is easy to install at the construction site. and a method for moving heavy objects using a heavy object moving device that is easy to install at the construction site. The purpose is to provide a method for moving heavy objects and a heavy object moving device.

Means for Solving the Problems

[0010] To achieve such an object, a method for moving a heavy object using the heavy object moving device of the present invention includes a horizontal travel rail, a pair of gantry frames provided opposite to the vicinity of both ends of the horizontal travel rail, and a hoisting mechanism that travels along the horizontal travel rail. Using the heavy object moving device, the heavy object is hoisted and moved. The heavy object moving method is characterized in that the gantry frame includes a pair of columns that are telescopable in the height direction, and a connecting beam that connects the upper ends of the columns and is telescopable in the longitudinal direction. The method includes a step of deploying and installing the gantry frame in a state where the columns and the connecting beam are shortened, a step of moving the hoisting mechanism with the heavy object suspended along the horizontal travel rail to hoist and move the heavy object, and a step of minimizing the deployed gantry frame by shortening both the columns and the connecting beam. By causing the hoisting mechanism with the heavy object suspended to travel along the horizontal travel rail, the heavy object is hoisted and moved. And a step of minimizing the deployed gantry frame by shortening both the columns and the connecting beam. It is characterized by comprising the above steps.

[0011] Further, the heavy object moving device of the present invention includes a horizontal travel rail, a pair of gantry frames provided opposite to the vicinity of both ends of the horizontal travel rail, and a hoisting mechanism that travels along the horizontal travel rail. The heavy object moving device is characterized in that the gantry frame has a pair of columns that are telescopable in the height direction and a connecting beam that connects the upper ends of the columns and is telescopable in the longitudinal direction. The gantry frame has a pair of columns that are telescopable in the height direction and a connecting beam that connects the upper ends of the columns and is telescopable in the longitudinal direction. a connecting beam that connects the upper ends of the columns and is telescopable in the longitudinal direction, and is characterized by having the above. do.

[0012] According to the method for moving a heavy object and the heavy object moving device using the heavy object moving device of the present invention, the gantry frame is composed of a pair of columns that can be expanded and contracted in the height direction, and a connecting beam that connects the upper ends of the columns and can be expanded and contracted in the longitudinal direction . As a result, the shortest length of the column is set to a height that allows road passage when loaded on a trailer , and the shortest length of the connecting beam is set to a length that can be connected at intervals that can be accommodated within the width that can be loaded on a pair of trailers . In this way, the heavy object moving device can be loaded on a trailer and transported in and out of the construction site without disassembling it.

[0013] On the other hand, when performing the hoisting operation of the heavy object, after transporting it to the construction site by a trailer , without performing an assembly operation, the columns and the connecting beam are each extended to expand the gantry frame to a desired size and installed.

[0014] Therefore, every time the heavy object moving device is transported in and out of the construction site, there is no need to perform assembly and disassembly operations, and the workability can be significantly improved. In addition, since it can be transported in and out with one trailer, the transportation cost can be reduced compared to the case where a plurality of transport vehicles are required, and it is possible to contribute to shortening the construction period and reducing the construction cost. Moreover, in the prior art, two lifters, which are general devices traded in the market, require a space to install a total of eight columns. In the present invention, since the gantry frame has a structure with two columns, a space to install a total of four columns is sufficient, and it can be installed even in a narrow space. In addition, when installing the heavy object moving device at the construction site, the columns and the connecting beam of the gantry frame can be extended to a desired length and expanded, and the inner space that becomes the work area can be used.

[0015] Furthermore, in the prior art, a space for installing two lifters, which are general devices traded in the market, and a total of eight columns is required. In the present invention, since the gantry frame has a structure with two columns, a space for installing a total of four columns is sufficient, and it can be installed even in a narrow space. In addition, when installing the heavy object moving device at the construction site, the columns and the connecting beam of the gantry frame can be extended to a desired length and expanded, and the inner space that becomes the work area is sufficient with a structure having two columns for the gantry frame, so a total of four columns can be installed, and it can be installed even in a narrow space. Moreover, when installing the heavy object moving device at the construction site, the columns and the connecting beam of the gantry frame can be extended to a desired length and expanded, and the inner space that becomes the work area and the inner space that becomes the work area can be expanded by extending the columns and the connecting beam of the gantry frame to the desired length. It becomes possible to secure a desired width in between.

[0016] In the heavy object moving device of the present invention, one end of the traversing rail projects outward from a pair of the opposing gantry frames, and a loading hoist is provided at one end of the traversing rail. It is characterized by this.

[0017] According to the heavy object moving device of the present invention, since a loading hoist is provided at one end of the traversing rail, the weight lifting mechanism that has lifted the heavy object is made to travel along the traversing rail, and after moving the heavy object to one end of the traversing rail, it is transferred to the loading hoist and the heavy object can be lifted again. Thereby, while performing the operation of loading the heavy object onto the transport vehicle using the loading hoist, it is possible to carry out the movement operation of a new heavy object with the weight lifting mechanism, and it becomes possible to significantly improve the work efficiency. It becomes possible to significantly improve the work efficiency.

[0018] The heavy object moving device of the present invention is characterized in that a side panel is provided on a side surface parallel to the traversing rail. It is characterized by this.

[0019] According to the heavy object moving device of the present invention, the side panel functions as a protector for the work area set in the inner space. Therefore, for example, when applying the heavy object moving device to road construction, even when carrying out road construction in the work area of the inner space while allowing general vehicles to pass by the side of the heavy object moving device, it becomes possible to improve the work safety.

[0020] The heavy object moving device of the present invention is characterized in that a floor slab removal device for pulling off an existing floor slab from the main girder of a bridge is installed in the weight lifting mechanism. It is characterized by this.

[0021] According to the heavy object moving device of the present invention, since the floor slab removal device is supported by the hoisting mechanism , when removing the existing floor slab from the main girder of the bridge, the cut piece that can be loaded onto the transport vehicle is cut and removed from the main girder using the floor slab removal device. Next, the cut piece and the floor slab removal device are lifted by the hoisting mechanism, and the hoisting machine is run along the traversing rail to move the cut piece together with the floor slab removal device to move. Moreover, if the cut piece is removed from the floor slab removal device, the cut piece can be carried out from the construction site .

[0022] Thus, a series of operations from the removal to the carrying out of the cut piece can be carried out using the heavy object moving device, and the work efficiency can be greatly improved. In addition, since the floor slab removal device can be constantly supported by the hoisting mechanism, a temporary placement place for the floor slab removal device is not required, and it becomes possible to secure a wide working area.

Effect of the Invention

[0023] According to the present invention, since a pair of gantry frames provided near each of both ends of the traversing rail are composed of a pair of columns that are telescopable in the height direction and a connecting beam that is telescopable in the longitudinal direction, by forming the state in which the columns and the connecting beam are the shortest into a size that can be loaded onto the trailer, the heavy object moving device can be loaded onto the trailer and carried in and out of the construction site, and since it is not necessary to carry out assembly and disassembly work every time it is carried in and out, the work of carrying in and out of the construction site and the installation work can be easily carried out.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0025] The heavy object moving device of the present invention is a device for hoisting and moving heavy objects, and has a structure that can be loaded on a trailer while being deployable to a desired height and width at the construction site. In this embodiment, a case where the heavy object moving device is applied to the floor slab replacement method of a bridge for replacing an existing floor slab installed on an I-shaped main girder of a road bridge with a newly installed floor slab is taken as an example, and the details are described below . When replacing the existing floor slab with a newly installed floor slab in the floor slab replacement method, the existing floor slab is cut into cut pieces of a size that can be loaded on the loading platform of a transport vehicle. However, the heavy object moving device

[0026] Note that in the floor slab replacement method, when replacing the existing floor slab with a newly installed floor slab, the existing floor slab is cut into cut pieces of a size that can be loaded on the loading platform of a transport vehicle. However, the heavy object moving device Move the fragments from the main girder and perform the operations until they are loaded onto the transport vehicle.

[0027] ≪≪Heavy Object Moving Device≫≫ As shown in FIGS. 1(a) and 1(b), the heavy object moving device 100 has a structure that can be changed to a length L, width W, and height H that can be loaded onto the trailer T. As shown in FIG. 2, it includes a telescopic frame mechanism 10 having a pair of gantry frames 12, a hoisting mechanism 20 that moves along the traversing rail 11 spanned between the pair of gantry frames 12, and a floor plate removal device 30 installed on the hoisting mechanism 20.

[0028] ≪Telescopic Frame Mechanism≫ As shown in FIGS. 2 and 3, the telescopic frame mechanism 10 includes a pair of gantry frames 12, a pair of connecting trusses 15 that connect the gantry frames 12 to each other, and two traversing rails 11 arranged in parallel with the connecting trusses 15. The gantry frame 12 is composed of a pair of columns 13 arranged at an interval and a connecting beam 14 that connects the vicinity of the upper ends of the pair of columns 13, as shown in FIG. 2.

[0029] Any hoisting device with a telescopic mechanism can be adopted for the column 13, but in this embodiment, a hydraulic jack is adopted. As shown in FIG. 2, the cylinder 131 is located above and the piston rod 132 is located below. Also, the shortest length of the column 13 is set to the height H that allows road passage when loaded on the trailer T, as shown in FIG. 1(b).

[0030] As shown in FIG. 2, the connecting beam 14 is provided with telescopic mechanisms with adjustable lengths at both ends thereof. The shortest length is such that, as shown in FIG. 1(b), the pair of columns 13 are on the trailer ​ It is set to a length that can be connected at intervals that fit within the width W that can be loaded on the trailer T.

[0031] In addition, as shown in FIG. 2, for the engagement between the support column 13 and the connecting beam 14, a brace member 121 is provided for reinforcement. The brace member 121 is configured by a telescopic device such as a screw type telescopic member or a hydraulic jack so as to follow the gantry frame 12 when it is deployed. Both ends thereof are rotatably connected to the support column 13 and the connecting beam 14.

[0032] The connecting truss 15 connects a pair of gantry frames 12 arranged in parallel at intervals shorter than the length L that can be loaded on the trailer T. As shown in FIG. 2, two are arranged in parallel at the same interval as the pair of support columns 13 that constitute the gantry frame 12. And between the two connecting trusses 15, two horizontal rails 11 are arranged in parallel with these at a predetermined interval.

[0033] As shown in FIG. 3, each of the two horizontal rails 11 is installed on the lower surface side of the connecting beam 14 so as to span a pair of gantry frames 12. Its length is longer than the connecting truss 15 and is formed to a maximum length L that can be loaded on the trailer T. Both ends each protrude outward from the space formed between a pair of gantry frames 12. And at one end of each of the horizontal rails 11, two loading hoists 112 are arranged adjacent to each other, and a chain block 111 is installed at the other end.

[0034] The loading hoist 112 moves the cut piece P moved by the lifting mechanism 20 described later, as shown in FIG. 8 ( b) As shown, it is used when loading the transport vehicle C, and two are installed so as to span across the traverse rail 11. Also, two chain blocks 111 are installed as auxiliary hoisting mechanisms, one for each traverse rail 11, but they do not necessarily have to be provided. However, it is not necessary to provide them.

[0035] And on each of the two traverse rails 11 formed of I-shaped steel, the traverse trolley 21 of the hoisting mechanism 20 runs with the lower flange of the rail as the track.

[0036] ≪Hoisting mechanism≫ As shown in FIGS. 4(a) and 4(b), the hoisting mechanism 20 includes a traverse trolley 21 that runs along the lower flange of the traverse rail 11, an orthogonal rail 22 suspended from the traverse trolley 21, an orthogonal trolley 23 that runs along the orthogonal rail 22, and a swivel rail 24 supported by the orthogonal trolley 23.

[0037] Two traverse trolleys 21 are provided at intervals for one traverse rail 11, and a total of four traverse trolleys 21 run synchronously along the two traverse rails 11. Also, the orthogonal rails 22 suspended from these traverse trolleys 21 extend in a direction orthogonal to the traverse rail 11 with a space between the two. And two orthogonal trolleys 23 are provided at intervals for one orthogonal rail 22, and a total of four orthogonal trolleys 23 run synchronously along the two orthogonal rails 22.

[0038] As shown in FIGS. 4 and 5, the swivel rail 24 is a circular rail in plan view supported by four orthogonal trolleys 23. As described above, the four orthogonal trolleys 23 are suspended from the traverse trolley 21. Since it travels along the orthogonal rail 22 suspended therefrom, the telescopic frame mechanism of the swivel rail 24 The position in plan view with respect to 10 can, as shown in Fig. 5, be adjusted by moving it in the extending direction of the traversing rail 11 and the extending direction of the orthogonal rail 22.

[0039] The hoisting mechanism 20 further includes a swivel trolley 25 that travels along the swivel rail 24 and a hoisting winch 26 provided on the swivel trolley 25.

[0040] As shown in Fig. 5, in plan view, the swivel trolley 25 is installed in four units at intervals of 45 degrees with respect to the swivel rail 24, and adjacent swivel trolleys 25 are connected via a connecting member 251 to each other. Thereby, the swivel trolley 25 always travels on the swivel rail 2 4 while maintaining an interval of 45 degrees.

[0041] As shown in Figs. 4(a) and (b), the hoisting winch 26 is installed on each of the four swivel trolleys 25, and thus a total of four units are installed in the hoisting mechanism 20. And although the weight can be hoisted by this hoisting winch 2 6, in the present embodiment, as shown in Fig. 3, the floor slab removal device 30 is suspended by the hoisting winch 2 6, and the cut piece P of the existing floor slab cut on the road bridge B is removed from the main girder D through this floor slab removal device 30.

[0042] ≪Floor slab removal device≫ The floor slab removal device 30 is a device for peeling off the cut piece P from the main girder D of the road bridge B, and as shown in Figs. 6( a)(b), a frame 33 formed by a pair of vertical members 31 and a pair of horizontal members 32, a suspension load anchor member 34 installed on the frame 33, a reaction jack 35, and a suspension jig 36.

[0043] Both the vertical member 31 and the horizontal member 32 are formed of a pair of channel steels as a set of long steel materials, and by arranging the webs of the channel steels back to back with a gap therebetween, a gap parallel to the axis is formed in the central part of the long steel material. The frame 33 is formed in a lattice shape in plan view by a pair of horizontally arranged horizontal members 32 with a space therebetween and a pair of vertically arranged vertical members 31 also with a space therebetween on the upper surface thereof, as shown in Fig. 6(a). At this time, both the vertical member 31 and the horizontal member 32 are arranged in a posture in which the gap of the long steel material penetrates in the vertical direction.

[0044] As shown in Fig. 6(a), the frame 33 is formed in a lattice shape in plan view by a pair of horizontally arranged horizontal members 32 with a space therebetween and a pair of vertically arranged vertical members 31 also with a space therebetween on the upper surface thereof. At this time, both the vertical member 31 and the horizontal member 32 are arranged in a posture in which the gap of the long steel material penetrates in the vertical direction. The suspension load anchor member 34 is arranged at each of the four overlapping positions of the horizontal member 32 and the vertical member 31 in the frame 33. As shown in Fig. 6(c), with the anchor rod 341 penetrating the frame 33, the head is fixed to the upper surface of the vertical member 31 via the anchor plate 342 with the head nut 343. Also, the tip of the anchor rod 341 penetrates the cut piece P and is fixed to the lower surface thereof with the tip nut 344.

[0045] Thus, the cut piece P can be connected to the frame 33 via the suspension load anchor member 34. The reaction force jack 35 is arranged at each of the two ends of the horizontal member 32 at the four corners of the frame 33, as shown in Fig. 6(a). As shown in Fig. 6(c), with the piston rod 351 of the hydraulic jack protruding downward from the lower surface of the horizontal member 32, the cylinder 352 is installed inside the horizontal member 32. Here, as shown in Figs. 6(b) and 6(c), the horizontal member 32 in the frame 33 is provided with notches 331 on the lower surface in the vicinity of both ends where the piston rod 351 of the reaction force jack 35 is arranged. The suspension load anchor member 34 is arranged at each of the four overlapping positions of the horizontal member 32 and the vertical member 31 in the frame 33. As shown in Fig. 6(c), with the anchor rod 341 penetrating the frame 33, the head is fixed to the upper surface of the vertical member 31 via the anchor plate 342 with the head nut 343. Also, the tip of the anchor rod 341 penetrates the cut piece P and is fixed to the lower surface thereof with the tip nut 344. Thus, the cut piece P can be connected to the frame 33 via the suspension load anchor member 34.

[0046] The reaction force jack 35 is arranged at each of the two ends of the horizontal member 32 at the four corners of the frame 33, as shown in Fig. 6(a). As shown in Fig. 6(c), with the piston rod 351 of the hydraulic jack protruding downward from the lower surface of the horizontal member 32, the cylinder 352 is installed inside the horizontal member 32. Here, as shown in Figs. 6(b) and 6(c), the horizontal member 32 in the frame 33 is provided with notches 331 on the lower surface in the vicinity of both ends where the piston rod 351 of the reaction force jack 35 is arranged. The reaction force jack 35 is arranged at each of the two ends of the horizontal member 32 at the four corners of the frame 33, as shown in Fig. 6(a). As shown in Fig. 6(c), with the piston rod 351 of the hydraulic jack protruding downward from the lower surface of the horizontal member 32, the cylinder 352 is installed inside the horizontal member 32. Here, as shown in Figs. 6(b) and 6(c), the horizontal member 32 in the frame 33 is provided with notches 331 on the lower surface in the vicinity of both ends where the piston rod 351 of the reaction force jack 35 is arranged.

[0047] Here, as shown in Figs. 6(b) and 6(c), the horizontal member 32 in the frame 33 is provided with notches 331 on the lower surface in the vicinity of both ends where the piston rod 351 of the reaction force jack 35 is arranged. The reaction force jack 35 is arranged at each of the two ends of the horizontal member 32 at the four corners of the frame 33, as shown in Fig. 6(a). As shown in Fig. 6(c), with the piston rod 351 of the hydraulic jack protruding downward from the lower surface of the horizontal member 32, the cylinder 352 is installed inside the horizontal member 32. When the reaction jack 35 is fully contracted, the pressing surface of the piston rod 351 However, it is shaped so as not to protrude from the lower surface of the frame 33.

[0048] Therefore, as shown in FIG. 6(b), the piston rod 351 of the reaction jack 35 is obstructed. The frame 33 can be stacked on the upper surface of the cut piece P without being damaged. In this state, the cut piece P is connected to the frame 33, and the reaction jack 35 is extended and removed. The piston rod 351 presses against the periphery of the cut piece P to be cut.

[0049] As a result, as shown in FIG. 6(c), the bottom surface of the frame 33 is fixed to the main girder D of the road bridge B. The cut piece P is pulled off from the main girder D and rises. It will be possible to remove it from the main girder D of bridge B.

[0050] The deck removal device 30 has a lifting jig 36 installed on the upper surface of the frame 33. The cut piece P is then lifted up together with the lifting hoist 26 via the lifting jig 36.

[0051] The above-described heavy load moving device 100 has an extendable frame mechanism 10 as shown in FIG. The sides are surrounded by the connecting truss 15 and the columns 13 connected by the connecting truss 15. The truss structure 16 is used on the surface to reinforce it, and side panels 17 are installed. The side panel 17 is provided in the inner space of the telescopic frame mechanism 10. It acts as a protector for the work area.

[0052] Therefore, in the bridge deck replacement method, the cut pieces P of the existing deck are removed from the main girder D and moved. When the general vehicle passes by the side of the heavy object moving device 100, the work in the work area inside the telescopic frame mechanism 10 can be advanced. Note that since both the truss structure 16 and the side panel 17 are provided within the height range of the cylinder 131 of the column 13, the extension or contraction behavior of the column 13 is not hindered. In addition, as shown in FIG. 1, the side panel 17 is installed on either the driver's side or the passenger seat side when placed on the trailer 7, covering the entire height range of the cylinder 131, and the other side is provided with a notch 171 at the lower end. This is suitable for applying the semi-section floor slab replacement method, which replaces the floor slab not in the whole cross-section (entire horizontal cross-section) but in each semi-section. The semi-section floor slab replacement method is, for example, to carry out lane regulation on a two-lane road bridge B having an overtaking lane and a driving lane, and replace either the driving lane side or the overtaking lane side of the concrete floor slab 202 for one semi-section with a new floor slab, and then, successively, replace the other semi-section side with a new floor slab in the same way. When applied to such a semi-section floor slab replacement method, as shown in FIG. 2, for the guardrails H provided on each side of the road bridge B, the cut piece P of the existing floor slab with one side installed remains, and using the notch 171 of the side panel 17, it can be taken into the work area set in the inner space of the telescopic frame mechanism 10 for removal work.

[0053] On the other hand, for the side where the side panel 17 is provided over the entire height range of the cylinder 131, in case of accident For the replacement work of the existing floor slab, instead of the method of performing it on the entire cross-section (entire horizontal cross-section), it is suitable for the semi-section floor slab replacement method of replacing each semi-section. The semi-section floor slab replacement method is applied to a two-lane road bridge B having an overtaking lane and a driving lane, for example, lane regulation is carried out, and for one semi-section, that is, either the driving lane side or the overtaking lane side of the concrete floor slab 202, it is replaced with a new floor slab, and successively, the other semi-section side is also replaced with a new floor slab in the same way. When applied to such a semi-section floor slab replacement method, for the guardrails H provided on each side of the road bridge B, as shown in FIG. 2, for the cut piece P of the existing floor slab with one side installed remaining, using the notch 171 of the side panel 17, it can be taken into the work area set in the inner space of the telescopic frame mechanism 10 for removal work.

[0054] The semi-section floor slab replacement method is, for example, to carry out lane regulation on a two-lane road bridge B having an overtaking lane and a driving lane, and replace either the driving lane side or the overtaking lane side of the concrete floor slab 202 for one semi-section with a new floor slab, and then, successively, replace the other semi-section side with a new floor slab in the same way. When lane regulation is carried out on a two-lane road bridge B having an overtaking lane and a driving lane, and for one semi-section, that is, either the driving lane side or the overtaking lane side of the concrete floor slab 202, it is replaced with a new floor slab, and successively, the other semi-section side is also replaced with a new floor slab in the same way. When applied to such a semi-section floor slab replacement method, for the guardrails H provided on each side of the road bridge B, as shown in FIG. 2, for the cut piece P of the existing floor slab with one side installed remaining, using the notch 171 of the side panel 17, it can be taken into the work area set in the inner space of the telescopic frame mechanism 10 for removal work. This is a method of replacing either the driving lane side or the overtaking lane side of the concrete floor slab 202 for one semi-section with a new floor slab, and then successively replacing the other semi-section side with a new floor slab in the same way.

[0055] When applied to such a semi-section floor slab replacement method, for the guardrails H provided on each side of the road bridge B, as shown in FIG. 2, for the cut piece P of the existing floor slab with one side installed remaining, using the notch 171 of the side panel 17, it can be taken into the work area set in the inner space of the telescopic frame mechanism 10 for removal work. Of the guardrails H provided on each side of the road bridge B, as shown in FIG. 2, for the cut piece P of the existing floor slab with one side installed remaining, using the notch 171 of the side panel 17, it can be taken into the work area set in the inner space of the telescopic frame mechanism 10 for removal work. The side panel 17 is installed on either the driver's side or the passenger seat side when placed on the trailer 7, covering the entire height range of the cylinder 131, and the other side is provided with a notch 171 at the lower end. This is suitable for applying the semi-section floor slab replacement method, which replaces the floor slab not in the whole cross-section (entire horizontal cross-section) but in each semi-section. The semi-section floor slab replacement method is, for example, to carry out lane regulation on a two-lane road bridge B having an overtaking lane and a driving lane, and replace either the driving lane side or the overtaking lane side of the concrete floor slab 202 for one semi-section with a new floor slab, and then, successively, replace the other semi-section side with a new floor slab in the same way.

[0056] On the other hand, for the side where the side panel 17 is provided over the entire height range of the cylinder 131, in case of The phenomenon in which equipment and cut pieces P fly out from the work area can be suppressed due to the situation. Therefore, the notch Using the side panel 17 provided with the notch 171, within the work area in the telescopic frame mechanism 10 While performing the removal work of the cut piece P, on the outer side of the side where the side panel 17 is provided over the entire height range of the cylinder 131, a general vehicle can be safely used.

[0057] ≪≪Method for Moving Heavy Objects Using a Heavy Object Moving Device≫≫ The method for moving heavy objects using the heavy object moving device 100 described above is used in the method for replacing the half-section floor slab of the bridge described above. When removing and moving the cut piece P of the existing floor slab from the main girder D and replacing it, and when placing the newly installed floor slab piece N temporarily placed at the construction site at the site where the cut piece P was removed and moved, The following is an example, and the procedure will be described below. Note that the cut piece P, which is a heavy object, is As shown in Fig. 7(a), in a state where it is installed on the main girder D of the road bridge B, it is pre-cut to a size that can be loaded on the loading platform of the transport vehicle C.

[0058] ≪Case of Removing, Moving, and Removing the Cut Piece P of the Existing Floor Slab from the Construction Site≫ First, as shown in Fig. 1, without disassembling the heavy object moving device 100, load the columns 13 and the connecting beam 14 of the gantry frame 1 2 in the most shortened state onto the trailer T and transport it to the construction site on the road bridge B.

[0059] Next, as shown in Fig. 7(a), with the transverse rail 11 provided in the telescopic frame mechanism 10 facing the bridge axis direction of the road bridge B, stop the trailer T loaded with the heavy object moving device 100 at a position straddling the cut piece P to be removed. Then, appropriately extend the columns 13 and the connecting beam 14 of the gantry frame 12 to adjust the telescopic frame mechanism 10 of the heavy object moving device 100 to a desired size. 14 to adjust the telescopic frame mechanism 10 of the heavy object moving device 100 to a desired size. ​​​​​Unfold and install it at a predetermined position on the road bridge B, while moving the trailer T away. This Before, after, or simultaneously with this operation, install the floor slab removal device 30 on the hoisting winch 26 of the hoisting mechanism 20.

[0060] After that, drive the traversing trolley 21 along the traversing rail 11 to move the hoisting mechanism 20 in the bridge axial direction, and if necessary, drive the orthogonal trolley 23 along the orthogonal rail 22 to move the hoisting mechanism 20 further in the direction perpendicular to the bridge axis, and position the floor slab removal device 30 supported by the hoisting mechanism 20 above the cutting piece P to be removed.

[0061] After aligning the floor slab removal device 30 in this way, as shown in Fig. 7(b), use the hoisting winch 26 of the hoisting mechanism 20 to lower the floor slab removal device 30 and stack it on the upper surface of the cutting piece P. Then, use the lifting anchor member 34 of the floor slab removal device 30 to connect the cutting piece P and the frame 33 of the floor slab removal device 30.

[0062] An anchor insertion hole (not shown) is provided in the cutting piece P in advance. As shown in Fig. 6(b), pass the anchor rod 341 of the lifting anchor member 34 through this anchor insertion hole and fix it with the tip nut 334 on the lower surface of the cutting piece P. On the other hand, the head of the anchor rod 341 is fixed with the head nut 333 on the upper surface of the frame 33 through the anchor plate 342.

[0063] After that, as shown in Fig. 6(c), extend the reaction force jack 35 of the floor slab removal device 30 and press around the cutting piece P with the lower surface of the piston rod 351, so that the cutting piece P rises with the frame 33 and the cutting piece P is completely separated from the main girder. In this state, the hoisting mechanism 2​​​​​ The frame 33 to which the cut piece P is connected via the lifting hoist 26 of 0 is lifted to a predetermined height. to.

[0064] In the present embodiment, the length of the cut piece P in the direction orthogonal to the bridge axis is cut longer than the bridge axis direction. Therefore, as shown in Fig. 8(a), the slewing trolley 25 of the hoisting mechanism 20 is run along the slewing rail 24. The floor slab removal device 30 and the orientation of the cut piece P are rotated by 90 degrees and loaded onto the loading platform of the transport vehicle C. Convert to the posture.

[0065] The cut piece P and the floor slab removal device 30 in this posture are moved in the bridge axis direction by running the traversing trolley 21 of the hoisting mechanism 20 along the traversing rail 11, and one end of the traversing rail 11. It is placed directly below the loading hoist 112 installed at the part. Place it under.

[0066] After removing the suspension anchor member 34 and releasing the connection between the cut piece P and the frame 33. The traversing trolley 21 of the hoisting mechanism 20 is run on the traversing rail 11 to move only the floor slab removal device 30 to the middle of the telescopic frame mechanism 10, and a new cut piece P using the floor slab removal device 30. Start the removal work. Start the removal work.

[0067] On the other hand, as shown in Fig. 8(b), the placed cut piece P is lifted to a predetermined height via the loading hoist 112, and the loading platform is placed below the lifted cut piece P. The transport vehicle C is driven in so that the cut piece P is loaded on the loading platform. In this way, the cut piece P removed and moved via the heavy object Moving device 100 can be carried out of the road bridge B. Moving device 100 can be carried out of the road bridge B. possible.

[0068] <<When placing the temporarily installed new floor slab piece N at the site where the cut piece P was removed and moved>> After repeating the above procedure until all the cut pieces P have been removed, at the removal site of the cut piece P on the main girder D, a newly installed floor slab piece N is laid.

[0069] The newly installed floor slab piece N is carried into the construction site by the transport vehicle C, and temporarily placed on the existing floor slab below the loading hoist 112 from the loading platform of the transport vehicle C using the loading hoist 112. Also, after removing the floor slab removal device 30 from the lifting hoist 26 of the lifting mechanism 20, the traversing trolley 21 is run along the traversing rail 11 to below the loading hoist 112.

[0070] Next, as shown in Fig. 9(a), the temporarily placed newly installed floor slab piece N is lifted using the lifting hoist 26 of the lifting mechanism 20, the traversing trolley 21 is moved along the traversing rail 11, and it is moved to the work area provided in the inner space of the telescopic frame mechanism 10. When placing it at the removal and movement site of the cut piece P, the posture of the newly installed floor slab piece N is such that the length in the direction perpendicular to the bridge axis is longer than the bridge axis direction. Therefore, the swivel trolley 25 of the lifting mechanism 20 is run along the swivel rail 24, and the direction of the newly installed floor slab piece N is rotated by 90 degrees to convert it to the posture when installing it on the upper surface of the main girder D.

[0071] After that, if necessary, as shown in Fig. 5, the traversing trolley 21 is further moved along the traversing rail 11 to move the lifting mechanism 20 in the bridge axis direction. Or the orthogonal trolley 23 is run along the orthogonal rail 22 to move the lifting mechanism 20 in the direction perpendicular to the bridge axis, etc., to position the position of the newly installed floor slab P at the planned installation position on the main girder D.

[0072] After aligning the position of the newly installed floor slab P in this way, as shown in Fig. 9(b), the newly installed floor slab piece N is lowered using the lifting hoist 26 of the lifting mechanism 20 and placed on the upper surface of the main girder D. ​ It is.

[0073] In addition, an attachment that can be detachably provided and is attachable to the hoisting winch 26 of the hoisting mechanism 20 may be provided in advance on the newly installed floor slab piece N. Also, the removal work of the cut piece P and the placement work of the newly installed floor slab piece N may be carried out within the work area provided in the inner space of the telescopic frame mechanism 10 after all the cut pieces P have been removed, or the removal work of the cut piece P and the placement work of the newly installed floor slab piece N may be alternately carried out. After all the cut pieces P located in the cutting P within the work area provided in the inner space of the telescopic frame mechanism 10 are removed, the newly installed floor slab pieces N may be sequentially installed, or the removal work of the cut pieces P and the placement work of the newly installed floor slab pieces N may be alternately carried out. After the above work is completed, the heavy object moving device 100 is carried out of the construction site. The heavy object moving device 100 can be loaded onto the trailer T after minimizing the columns 13 and the connecting beams 14 of the gantry frame 12 to a size that can be loaded onto the trailer T without disassembling, and then this reduced heavy object moving device 100 is loaded onto the trailer T and carried out of the construction site. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area.

[0074] After the above work is completed, the heavy object moving device 100 is carried out of the construction site. The heavy object moving device 100 can be loaded onto the trailer T after minimizing the columns 13 and the connecting beams 14 of the gantry frame 12 to a size that can be loaded onto the trailer T without disassembling, and then this reduced heavy object moving device 100 is loaded onto the trailer T and carried out of the construction site. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area. After the above work is completed, the heavy object moving device 100 is carried out of the construction site. The heavy object moving device 100 can be loaded onto the trailer T after minimizing the columns 13 and the connecting beams 14 of the gantry frame 12 to a size that can be loaded onto the trailer T without disassembling, and then this reduced heavy object moving device 100 is loaded onto the trailer T and carried out of the construction site. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area.

[0075] As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area. As described above, in the floor slab replacement method of the bridge, when the heavy object moving device 100 is used when removing and moving the cut pieces P of the existing floor slab from the main girder D, a series of operations from the removal to the loading of the cut pieces P can be carried out, and the work efficiency can be greatly improved. Also, since the floor slab removal device 30 can always be supported by the hoisting mechanism 20, a temporary placement place for the floor slab removal device 30 becomes unnecessary, and it becomes possible to secure a wide work area.

[0076] Also, the heavy object moving device 100 does not need to be assembled or disassembled every time it is carried in and out of the construction site, and it is possible to greatly improve the constructability. Furthermore, since it can be carried in and out with one trailer T, the transportation cost can be reduced compared to the case where a plurality of trailers T are required. Also, the heavy object moving device 100 does not need to be assembled or disassembled every time it is carried in and out of the construction site, and it is possible to greatly improve the constructability. Furthermore, since it can be carried in and out with one trailer T, the transportation cost can be reduced compared to the case where a plurality of trailers T are required. Also, the heavy object moving device 100 does not need to be assembled or disassembled every time it is carried in and out of the construction site, and it is possible to greatly improve the constructability. Furthermore, since it can be carried in and out with one trailer T, the transportation cost can be reduced compared to the case where a plurality of trailers T are required. This will contribute to shortening construction time and reducing construction costs.

[0077] In addition, the gate-shaped frame 12 has a structure equipped with two support pillars. The telescopic frame mechanism 10 is structured with a total of four support columns 13, so it can be used in small It is possible to install the heavy object moving device 10 at the construction site. When installing the gantry frame 12, the support pillars 13 and the connecting beams 14 are extended to the desired length. By doing so, the telescopic frame mechanism 10 can be expanded, and the inner space which becomes the working area can be expanded to the desired size. It is possible to ensure the reliability.

[0078] The weight moving device of the present invention is not limited to the above-mentioned embodiment, and the gist of the present invention is not limited to the above-mentioned embodiment. Various modifications are possible without departing from the scope of the present invention.

[0079] For example, in this embodiment, in order to pull off the cut piece P from the main girder D, the heavy object moving device 1 A deck removal device 30 is installed on the lifting mechanism 20 of 00, and the deck removal device 30 is used to remove the cut piece P However, if the cut piece P is in a state where it can be removed simply by lifting it up, The cut pieces P are removed by using the lifting hoist 26 of the lifting mechanism 20 without using the removal device 30. It may be removed.

[0080] In addition, the heavy objects to be removed by the heavy object moving device are not limited to cut pieces. The heavy object moving device can also be applied to heavy objects such as the above.

[0081] Furthermore, the traverse rail 11, the orthogonal rail 22, the traverse trolley 21, the orthogonal trolley 23, the turning The number of trolleys 25, etc. is not limited to the above-mentioned number. [Explanation of symbols]

[0082] 100 Weight Object Moving Device 10 Telescopic Frame Mechanism 11 Transverse Rail 111 Chain Block 112 Loading Hoist 12 Gantry Frame 121 Brace Member 13 Support Column 131 Cylinder 132 Piston Rod 14 Connecting Beam 15 Connecting Truss 16 Truss Structure 17 Side Panel 20 Hoisting Mechanism 21 Transverse Trolley 22 Orthogonal Rail 23 Orthogonal Trolley 24 Swivel Rail 25 Swivel Trolley 251 Connecting Member 26 Hoisting Hoist 30 Floor Removal Device 31 Vertical Member 32 Horizontal Member 33 Frame 34 Anchor Member for Suspended Load 341 Anchor Rod 342 Anchor Plate 343 Head Nut 344 Tip Nut 35 Reaction Jack 351 Piston Rod 352 Cylinder T Trailer C Transport Vehicle P Cutting Piece H Fence B Road Bridge D Main Girder N New Floor Slab Piece

Claims

[Claim 1] A first support column that is extendable in a height direction; A second support column that is extendable in a height direction; a length-adjustable connecting beam that connects the first support column and the second support column; A stretchable first braze material having one end rotatably connected to the connecting beam and the other end rotatably connected to the first support; a second braze material having one end rotatably connected to the connecting beam and the other end rotatably connected to the second support column,

Images