Method for moving heavy objects using a heavy object moving device and heavy object moving 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 heavy object moving method using a heavy object moving device for lifting and moving heavy objects and a heavy object moving device.

Background Art

[0002] Conventionally, in a bridge deck replacement method for replacing an existing deck installed on an I-shaped main girder with a new deck when removing an existing deck, first, the existing deck is cut into a shape that can be loaded onto the bed of a transport vehicle. After that, there is known a method of lifting the cut pieces of the existing deck using a lifting device such as a crane and moving them to the bed of a transport vehicle. cut pieces while lifting the cut pieces of the existing deck using a lifting device such as a crane and moving them to the bed of a transport vehicle.

[0003] Under such circumstances, Patent Document 1 discloses a method of removing a removal member that is a part of an existing deck using an erection girder type lifting device. The erection girder type lifting device is a device structured to be assembled at a construction site. First, two lifters each having four struts supporting the four corners of a gantry that is rectangular in plan view are prepared, each of these two lifters is loaded onto the bed of a truck and carried into the construction site. Next, the two lifters are arranged at an interval with the removal member interposed therebetween, the two lifters are arranged at an interval with the removal member interposed therebetween, an erection girder is installed across the gantry of each lifter, and a load lifting mechanism is installed on the erection girder so as to be capable of traversing. the two lifters are arranged at an interval with the removal member interposed therebetween, an erection girder is installed across the gantry of each lifter, and a load lifting mechanism is installed on the erection girder so as to be capable of traversing. an erection girder is installed across the gantry of each lifter, and a load lifting mechanism is installed on the erection girder so as to be capable of traversing.

[0004] Through the load lifting mechanism of the erection girder type lifting device assembled in this way, the removal member which is a part of the existing deck is lifted to remove the removal member from the road bridge, the removal member which is a part of the existing deck is lifted to remove the removal member from the road bridge, and the load lifting mechanism is traversed along the erection girder while suspending the removal member. On the other hand, a transport vehicle is driven under the gantry of one of the two lifters in advance, and the load lifting mechanism moves along the erection girder to under the gantry On the other hand, a transport vehicle is driven under the gantry of one of the two lifters in advance, and the load lifting mechanism moves along the erection girder to under the gantry Then, the removal components suspended from the lifting mechanism are lowered onto the cargo bed of the transport vehicle. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2018-204427 [Overview of the project] [Problems that the invention aims to solve]

[0006] The erection girder type lifting device described in Patent Document 1 is a common device traded on the market. Using a lifter, a temporary girder equipped with a load-lifting mechanism is assembled by placing it across the lifter. This eliminates the time and cost of manufacturing a dedicated device, while also facilitating the removal of the removed components. It is now possible to implement this.

[0007] However, as mentioned earlier, the lifter supports the four corners of the rectangular platform in plan view with four support columns. It has this shape, and if two of these lifters are installed with the removal component in between, a total of eight support columns will be installed. Space is required for installation. This means that the area occupied by the erection girder type lifting device at the construction site is Because the area is vast, it may be difficult to secure installation space depending on the construction site. This occurs.

[0008] In addition, two lifters were installed at the construction site, and erection girders equipped with a load-lifting mechanism were erected on them. The assembly process is complicated, and transporting these parts to the construction site requires a cargo truck. Since multiple vehicles are required, securing parking spaces for these cargo trucks and transportation costs will increase. This can lead to challenges in terms of construction period, cost, and work efficiency.

[0009] This invention has been made in view of the above problems, and its main purpose is to transport materials to and from the site. A heavy object moving device that is easy to use and easy to install at the construction site. The objective is to provide a method for moving objects and a device for moving heavy objects. [Means for solving the problem]

[0010] To achieve this objective, the method of moving heavy objects using the heavy object moving device of the present invention is to move horizontally A row rail, a pair of gate-shaped frames provided opposite each other near both ends of the row rail, and front A heavy object moving device equipped with a lifting mechanism that travels along the traverse rail is used to lift heavy objects. A method for moving heavy objects, wherein the gate-shaped frame comprises a pair of frames that are extendable and retractable in the height direction. It comprises a support column and a connecting beam that connects the upper ends of the support columns and is extendable and retractable in the longitudinal direction, The process of unfolding and installing the portal frame, in which the columns and connecting beams have been shortened, The lifting mechanism, with the aforementioned heavy object suspended from it, is to be moved along the traverse rail. This eliminates the process of lifting and moving the heavy object, and shortens both the support column and the connecting beam. The present invention is characterized by comprising the steps of minimizing the deployed gantry frame.

[0011] Furthermore, the heavy object moving device of the present invention includes a traverse rail and, facing each other near both ends of the traverse rail... It comprises a pair of gate-shaped frames and a lifting mechanism that travels along the traverse rail. A heavy object moving device, wherein the gate-type frame comprises a pair of support columns that are extendable and retractable in the height direction. It is characterized by having a connecting beam that connects the upper ends of the support columns and is expandable and contractible in the longitudinal direction. do.

[0012] According to the heavy object moving method using the heavy object moving device and the heavy object moving device of the present invention, the gantry frame is composed of a pair of support columns that can expand and contract in the height direction, and a connecting beam that connects the upper ends of the support columns and can expand and contract in the longitudinal direction . Accordingly, by setting the shortest length of the support columns to a height that allows road passage when loaded on a trailer and setting the shortest length of the connecting beam to a length that allows the pair of support columns to be connected at an interval that fits within the width loadable on a trai ler, the heavy object moving device can be loaded onto the trailer and carried in and out of the construction site without being disassembled.

[0013] On the other hand, when performing lifting work for heavy objects, after being carried into the construction site by a trailer , the gantry frame can be obtained to a desired size by expanding the support columns and the connecting beam respectively without assembly work , and then installed and deployed.

[0014] Therefore, it is not necessary to perform assembly and disassembly work every time the heavy object moving device is carried in and out at the construction site , and workability can be greatly improved. In addition, since it can be carried in and out by one trailer , transportation costs can be reduced compared to the case where a plurality of transportation vehicles are required , which can contribute to the shortening of construction period and the reduction of construction cost.

[0015] Furthermore, in the prior art, a space for installing a total of eight support columns is required, where two lifters, which are common devices traded in the market, are used , while in the present invention, since the gantry frame has a structure including two support columns , a space for installing a total of four support columns is sufficient, and the device can also be installed in a narrow space . In addition, when installing the heavy object moving device at the construction site, the support columns and the connecting beam of the gantry frame can be extended and deployed to a desired length, and the inner space serving as the working area ​It becomes possible to secure the desired amount of space in between.

[0016] The heavy object moving device of the present invention has one end of the traverse rails facing a pair of gate-type rails. A loading hoist is provided at one end of the traverse rail, which extends outward from the frame. It is characterized by the provision of [a feature].

[0017] According to the heavy object moving device of the present invention, a loading hoist is provided at one end of the traverse rail. Therefore, the lifting mechanism that has lifted the heavy object is moved along the horizontal rail, and the heavy object After moving it to one end of the traverse rail, the heavy object is transferred to the loading hoist and then... It can be lifted. This allows heavy objects to be loaded onto transport vehicles using a loading hoist. While loading is underway, the lifting mechanism can be used to move new heavy objects, improving work efficiency. Significant improvements will be possible.

[0018] The heavy object moving device of the present invention is provided with side panels on the side parallel to the traverse rail. It is characterized by having this feature.

[0019] According to the heavy object moving device of the present invention, a protector for the work area set in the inner space is used. The side panels function. Therefore, for example, when applying heavy object moving equipment to road construction... ...and road construction proceeds in the work area within the inner space while general vehicles are allowed to pass alongside the heavy object moving device. It is possible to improve work efficiency while also enhancing safety during the work process.

[0020] The heavy object moving device of the present invention includes a lifting mechanism for removing existing deck slabs from the main girders of a bridge. A key feature is the installation of a plate removal device.

[0021] According to the heavy object moving device of the present invention, the deck removal device is supported by the lifting mechanism. When removing the existing deck slab from the main girder of a bridge, the cut pieces are cut so that they can be loaded onto a transport vehicle, and the deck slab The slab is removed by detaching it from the main girder using a removal device. Next, the cut pieces and the deck slab removal device are lifted. The mechanism lifts the piece, and the hoisting machine is driven along the traverse rail to remove the cut piece along with the deck slab removal device. Move it. Then, remove the cut piece from the deck slab removal device, and the cut piece will be removed from the construction site. It can be transported out.

[0022] This allows for the use of heavy object moving equipment to carry out a series of operations from the removal of cut pieces to their transport. This significantly improves work efficiency. Furthermore, the deck removal device is constantly supported by the lifting mechanism. Because it can be stored in place, a temporary storage area for the deck removal equipment is unnecessary, expanding the work area. It will become possible to secure it. [Effects of the Invention]

[0023] According to the present invention, a pair of gate-shaped frames provided near both ends of the traverse rail are configured in height It is composed of a pair of support columns that can extend and retract in the direction and a connecting beam that can extend and retract in the longitudinal direction, Furthermore, by forming the connecting beam in its shortest possible state to a size that can be loaded onto a trailer, The heavy object moving equipment can be loaded onto a trailer and transported to and from the construction site, and each time it is transported in and out Since assembly and disassembly work is not required, the work of transporting to and from the construction site and installation work is not required. This makes it easier to implement. [Brief explanation of the drawing]

[0024] [Figure 1] This figure shows the heavy object moving device according to an embodiment of the present invention loaded onto a trailer. [Figure 2]This figure shows the rear view of a heavy object moving device according to an embodiment of the present invention. [Figure 3] This figure shows a side cross-section (AA section) of a heavy object moving device according to an embodiment of the present invention. [Figure 4] This figure shows a lifting mechanism in an embodiment of the present invention. [Figure 5] This figure shows a swivel rail and swivel trolley according to an embodiment of the present invention. [Figure 6] This figure shows a deck slab removal device according to an embodiment of the present invention. [Figure 7] This figure (Part 1) shows the procedure for removing and moving a cut piece of an existing deck slab from the main girder using a heavy object moving device according to an embodiment of the present invention. [Figure 8] This figure (part 2) shows the procedure for removing and moving a cut piece of an existing deck slab from the main girder using a heavy object moving device according to an embodiment of the present invention. [Figure 9] This figure shows the procedure for placing a new deck slab piece in the place where a cut piece of an existing deck slab was removed, using a heavy object moving device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0025] The present invention relates to a heavy object moving device that lifts and moves heavy objects, and is loaded onto a trailer. It is possible to deploy it to the desired height and width at the construction site, and it has a structure that allows for this. In this embodiment, the existing deck slab installed on the I-shaped main girder of the road bridge is attached to the new deck slab. As an example, let's consider the case where a heavy object moving device is applied to the bridge deck replacement method, and then... I will explain the details to you.

[0026] Furthermore, in the deck replacement method, when replacing the existing deck with a new deck, the existing deck The material is cut into pieces small enough to be loaded onto the cargo bed of a transport vehicle, but the heavy object moving device is used to cut this material. This involves moving the fragments from the main girder and loading them onto transport vehicles.

[0027] ≪≪Heavy object moving device≫≫ The heavy object moving device 100 is sized to fit a trailer T, as shown in Figures 1(a) and 1(b). It has a structure that allows the length L, width W, and height H to be changed so that it can be loaded, as shown in Figure 2. A telescopic frame mechanism 10 having a pair of gate-shaped frames 12, and a bridge over the pair of gate-shaped frames 12 A lifting mechanism 20 that moves along the traverse rail 11 that is laid across it, and a floor installed on the lifting mechanism 20 It is equipped with a plate removal device 30.

[0028] <<Extendable frame mechanism>> The telescopic frame mechanism 10, as shown in Figures 2 and 3, consists of a pair of gate-shaped frames 12 and a gate A pair of connecting trusses 15 that connect the formwork frames 12 together, and arranged parallel to the connecting trusses 15. The gate-shaped frame 12 comprises two horizontal rails 11, and the spacing between them is as shown in Figure 2. A pair of support columns 13 are positioned, and a connecting beam 1 connects the vicinity of the upper ends of the pair of support columns 13. It consists of 4.

[0029] Any lifting device having an extension mechanism may be used for the support column 13, but in this implementation In terms of configuration, a hydraulic jack is used, and as shown in Figure 2, the cylinder 131 is located at the top and the piston The ton rod 132 is positioned downwards. Also, the minimum length of the support column 13 is As shown in Figure 1(b), the height H is set to a height that allows for road traffic when loaded onto the trailer T. It is being done.

[0030] As shown in Figure 2, the connecting beam 14 has a telescopic mechanism at both ends that allows for length adjustment. A trailer is provided, and the shortest length is as shown in Figure 1(b), connecting a pair of support columns 13 to the trailer. The length is set so that they can be connected at intervals that fit within the width W that can be loaded onto T.

[0031] Furthermore, as shown in Figure 2, a brace member 121 is used at the connection between the support column 13 and the connecting beam 14. It is provided and reinforced. The brace material 121 is provided as described above for the portal frame 12 It is constructed with extension and retraction mechanisms such as screw-type telescopic members and hydraulic jacks to follow the movement when it is deployed. Furthermore, both ends of the structure are rotatably connected to the support column 13 and the connecting beam 14. It is being done.

[0032] The connecting trusses 15 are arranged in parallel at intervals shorter than the length L that can be loaded onto the trailer T. This connects a pair of gate-type frames 12 together, as shown in Figure 2, Two of them are arranged in parallel at the same interval as the pair of support columns 13 that make up 12. And two Between the connecting trusses 15, two traverse rails 11 are arranged parallel to them at a predetermined distance apart. It is positioned.

[0033] Each of the two horizontal rails 11 has a pair of gate-shaped frames 12 mounted on it, as shown in Figure 3. The ends are positioned so as to span across, with each near the end being installed on the underside of the connecting beam 14. Its length is It is longer than the connecting truss 15 and formed to a maximum length L that can be loaded onto the trailer T, and both ends Each protrudes outward from the space formed between the pair of gate-shaped frames 12. At one end of each of the traverse rails 11, two loading hoists 112 are positioned adjacent to each other. A chain block 111 is installed at the other end.

[0034] The loading hoist 112 moves the cut pieces P, which have been moved by the lifting mechanism 20 described later, as shown in Figure 8. As shown in b), it is used when loading onto transport vehicle C, and is mounted on the traverse rail 11. Two units are installed to span across from each other. In addition, the chain hoist 111 has one horizontal rail Two auxiliary lifting mechanisms are installed, one on each side of the Ru11, but they are not always necessary. That's fine.

[0035] Then, the two traverse rails 11, which are formed from I-shaped steel members, each have a lower section. The traversing trolley 21 of the lifting mechanism 20 travels along the lunge, which acts as a rail.

[0036] ≪Lifting mechanism≫ The lifting mechanism 20 is located along the lower flange of the traverse rail 11, as shown in Figures 4(a) and 4(b). A traversing trolley 21 that moves along the tracks, and a right-angle rail 22 suspended from the traversing trolley 21, A right-angle trolley 23 that runs along the right-angle rail 22, and a swing supported by the right-angle trolley 23 It is equipped with a rotating rail 24.

[0037] Two traverse trolleys 21 are installed on each traverse rail 11 with a gap between them. A total of four units will run in sync along the two horizontal rails 11. The right-angle rails 22 suspended from the rail 21 are spaced apart and perpendicular to the traverse rail 11. It extends in the direction. And, there are two orthogonal trolleys 23 between one orthogonal rail 22. They are spaced apart, and a total of four units travel synchronously along two orthogonal rails 22. .

[0038] The swivel rail 24 was supported by four orthogonal trolleys 23, as shown in Figures 4 and 5. The rail is circular in plan view. As described above, the four orthogonal trolleys 23 are traversing trolleys 21 Because it runs along the orthogonal rail 22 suspended from it, the retractable frame mechanism of the swivel rail 24 The plan view position relative to 10 is as shown in Figure 5, in the direction of extension of the traverse rail 11 and the orthogonal rail The length of part 22 can be adjusted by moving it in the direction of extension.

[0039] The lifting mechanism 20 further includes a slewing trolley 25 that travels along the slewing rail 24, and a slewing trolley It is equipped with a lifting hoist 26 located on the lorry 25.

[0040] The swivel trolley 25, as shown in Figure 5, is at a 45-degree angle to the swivel rail 24 in a plan view. Four units are installed at intervals, and adjacent swivel trolleys 25 are connected to each other via connecting members 251. This allows the swivel trolley 25 to maintain a constant 45-degree gap while rotating on the rail 2 It travels on route 4.

[0041] The lifting hoist 26 is attached to each of the four swivel trolleys 25, as shown in Figures 4(a) and 4(b). It is installed, bringing the total number of units installed on the lifting mechanism 20 to four. And this lifting hoist 2 Although heavy objects can also be lifted with 6, in this embodiment, as shown in Figure 3, the lifting wheel The deck removal device 30 is suspended by Stroke 26, and the deck is cut on road bridge B via this deck removal device 30. The cut pieces P of the existing deck slab are removed from the main girder D.

[0042] ≪Floor slab removal device≫ The deck removal device 30 is a device for peeling off the cut pieces P from the main girder D of the road bridge B, as shown in Figure 6. As shown in a)(b), the frame is formed by a pair of vertical members 31 and a pair of horizontal members 32. The M33, the load-lifting anchor member 34 installed on the frame 33, the reaction jack 35, It is composed of a lifting jig 36.

[0043] Both the vertical members 31 and the horizontal members 32 are formed from long steel materials, each formed by combining a pair of channel steel sections. By placing the webs of channel steel back-to-back with a gap between them, the central part of the long steel material A gap is formed parallel to the axis.

[0044] The frame 33, as shown in Figure 6(a), consists of a pair of horizontal members 32 arranged at intervals, On its upper surface, it is formed in a grid pattern in plan view by a pair of vertical members 31 arranged at similar intervals. In this case, the gaps between the long steel members 31 and 32 are penetrated vertically. It is positioned in a certain posture.

[0045] The load-suspending anchor member 34 is located where the horizontal member 32 and vertical member 31 overlap in the frame 33. They are positioned in each location, and as shown in Figure 6(c), the anchor rods 341 penetrate the frame 33. With the nuts 34 attached, the head of the nut 34 is attached to the upper surface of the vertical member 31 via the anchor plate 342. It is fixed at 3. Also, the tip of the anchor rod 341 penetrates the cut piece P and below it It is fixed to the surface with a tip nut 344. This allows the load-suspending anchor member 34 to be used. The cut piece P can be connected to the frame 33.

[0046] The reaction jack 35 is located at the four corners of the horizontal members 32 of the frame 33, as shown in Figure 6(a). Arranged at each end, as shown in Figure 6(c), the piston rod 351 of the hydraulic jack The cylinder 352 is housed inside the horizontal member 32 in such a manner that it protrudes downward from the lower surface of the horizontal member 32. ru.

[0047] Here, the horizontal member 32 in the frame 33 is a reaction force jack, as shown in Figures 6(b) and 6(c). Notches 331 are provided on the lower surface near both ends where the piston rods 351 of the lock 35 are located. It is kicked, and with the reaction jack 35 in its shortest state, the pressing surface of the piston rod 351 However, it is shaped so that it does not protrude from the underside of frame 33.

[0048] Therefore, as shown in Figure 6(b), the piston rod 351 of the reaction jack 35 is obstructed. The frame 33 can be laminated onto the upper surface of the cut piece P without being harmed. In this state, connect the cut piece P and the frame 33, extend the reaction jack 35, and remove it. The piston rod 351 presses against the periphery of the cutting piece P that is to be cut.

[0049] As a result, as shown in Figure 6(c), the frame 33 is fixed to the main girder D of the road bridge B on its underside. The cut piece P, which is attached, is pulled away from the main girder D as it rises. In this way, the cut piece P is removed from the road. It will be possible to remove the main girder D of bridge B.

[0050] Furthermore, 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 by the lifting hoist 26 via this lifting jig 36.

[0051] The heavy object moving device 100 with the above configuration is shown in Figure 3, and the telescopic frame mechanism 10 The sides are enclosed by the connecting truss 15 and the support columns 13 connected by this connecting truss 15. The surface is reinforced with a truss structure 16, and side panels 17 are installed. This side panel 17 is provided in the inner space of the telescopic frame mechanism 10. It functions 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 doing so, while allowing general vehicles to pass alongside the heavy object moving device 100, the telescopic frame mechanism 10 This makes it possible to advance work in the work area. Since both Nel 17 are installed within the height range of the cylinder 131 of the support column 13, It does not inhibit the extension or contraction behavior of 3.

[0053] Furthermore, as shown in Figure 1, the side panel 17 is on the driver's side when mounted on the trailer 7. Alternatively, one of the passenger-side units may be installed across the entire height range of the cylinder 131, and the other unit may be installed as follows: It is a good idea to make a notch 171 at the bottom end. This makes it easier to replace the existing floor slab across the entire surface (horizontally). This method is suitable for replacing half of the floor slab, rather than replacing the entire section. It is suitable for use.

[0054] The half-section deck replacement method can be used, for example, on a two-lane road bridge B that has an overtaking lane and a driving lane. Lane restrictions were implemented in this area, and half of the section, that is, the driving lane side of the concrete deck slab 202 and One of the overtaking lane sections will be replaced with a new deck, and simultaneously, the other half-section section will be replaced. Similarly, this method involves replacing the old deck with a newly constructed one.

[0055] When applied to this type of half-section deck replacement method, the railings provided on both sides of road bridge B Of H, as shown in Figure 2, the cut piece P of the existing floor slab, which remains installed on one side, is used as a side panel. Using the notch 171 of the flannel 17, the work area set in the inner space of the telescopic frame mechanism 10 It can be brought into the rear and removed.

[0056] On the other hand, the side on which the side panel 17 is provided over the entire height range of the cylinder 131 is, in case of accident This can suppress the phenomenon of equipment or cut pieces P flying out of the work area due to the situation. Using the side panel 17 equipped with k171, in the work area within the telescopic frame mechanism 10 While removing the cut pieces P, the side panels 17 are installed over the entire height range of the cylinder 131. On the outside of the girder, general vehicles can be safely used.

[0057] ≪≪Method for moving heavy objects using a heavy object moving device≫≫ The method of moving heavy objects using the heavy object moving device 100 described above is applied to the half-section floor of the bridge described above. In the slab replacement method, when the cut pieces P of the existing deck slab are removed from the main girder D and moved, and at the construction site As an example, consider the case where a newly constructed slab piece N, temporarily placed inside, is positioned in the area where the cut piece P was removed and moved. The procedure is described below. Note that the heavy cut piece P is as shown in Figure 7(a). With the structure installed on the main girder D of road bridge B, it is roughly the size that can be loaded onto the cargo bed of transport vehicle C. It has been cut.

[0058] ≪When removing and moving cut pieces P of the existing deck slab and transporting them away from the construction site≫ First, as shown in Figure 1, the gantry frame 1 can be dismantled without dismantling the heavy object moving device 100. The two support columns 13 and connecting beams 14 are loaded onto trailer T in their shortest possible state, and then onto road bridge B It will be delivered to the construction site above.

[0059] Next, as shown in Figure 7(a), the traverse rail 11 provided on the telescopic frame mechanism 10 is moved along the road. With bridge B facing the bridge axis direction, the heavy object moving device 100 is positioned to straddle the cut piece P that is scheduled to be removed. The trailer T loaded with the goods is parked. Then, the pillars 13 and connecting beams of the gate-type frame 12 are connected. By extending 14 as appropriate, the telescopic frame mechanism 10 of the heavy object moving device 100 can be adjusted to the desired size. While deploying and positioning it in the designated location on road bridge B, trailer T is removed. Before, during, or simultaneously with the work, attach the deck removal device 30 to the lifting hoist 26 of the lifting mechanism 20. Install it.

[0060] After this, the traverse trolley 21 is moved along the traverse rail 11, and the lifting mechanism 20 is moved across the bridge. Move it axially, and if necessary, move the orthogonal trolley 23 along the orthogonal rail 22 The lifting mechanism 20 is moved, and the lifting mechanism 20 is further moved in a direction perpendicular to the bridge axis, and the lifting mechanism 20 is supported The deck slab removal device 30 is positioned above the cut piece P to be removed.

[0061] Having thus aligned the deck removal device 30, as shown in Figure 7(b) Then, using the lifting hoist 26 of the lifting mechanism 20, the deck removal device 30 is lowered, and the cut pieces P The material is stacked on the top surface. Then, the lifting anchor member 34 of the floor slab removal device 30 is used to cut the piece. P is connected to the frame 33 of the deck slab removal device 30.

[0062] The cut piece P is pre-filled with an anchor insertion hole (not shown), as shown in Figure 6(b). As such, the anchor rod 341 of the load-lifting anchor member 34 is passed through this anchor insertion hole. Then, the cut piece P is fixed to the lower surface with a tip nut 334. Meanwhile, the head of the anchor rod 341 The part is fixed to the upper surface of the frame 33 via an anchor plate 342 and a head nut 333. ru.

[0063] Next, as shown in Figure 6(c), the reaction jack 35 of the deck removal device 30 is extended. By pressing the lower surface of the piston rod 351 against the periphery of the cutting piece P, the cutting piece P becomes flexible. The platform 33 rises, and the cut piece P is completely detached from the main girder. In this state, the lifting mechanism 2 The frame 33 to which the cut pieces P are connected is raised to a predetermined height via a lifting hoist 26. Let it.

[0064] In this embodiment, the length of the cut piece P in the direction perpendicular to the bridge axis is made longer than the length in the direction of the bridge axis. Therefore, as shown in Figure 8(a), the swivel trolley 25 of the lifting mechanism 20 is moved to the swivel rail 24 The transport vehicle C is driven along the track, the orientation of the deck removal device 30 and the cut piece P is rotated 90 degrees, and the transport vehicle C Switch to a position for loading onto the truck bed.

[0065] In this position, the cut piece P and the deck removal device 30 are lifted by the traversing trolley 21 of the lifting mechanism 20. By moving along rail 11, it moves in the direction of the bridge axis, and one end of the traverse rail 11 It is placed directly beneath the loading hoist 112 installed in the section.

[0066] After removing the load-lifting anchor member 34 and releasing the connection between the cut piece P and the frame 33, The traversing trolley 21 of the lifting mechanism 20 is moved along the traversing rail 11, and only the floor slab removal device 30 is used. Move it to the middle of the telescopic frame mechanism 10, and use the slab removal device 30 to cut a new piece P We will begin the removal work.

[0067] On the other hand, the placed cut pieces P are loaded onto the loading hoist 112, as shown in Figure 8(b). The cut piece P is lifted to a predetermined height via the platform, and a loading platform is placed below the lifted cut piece P. The transport vehicle C is driven in so that the cut pieces P are positioned, and the cut pieces P are loaded onto the truck bed. In this way, the heavy object The cut pieces P, which have been removed and moved via the moving device 100, can be transported from the road bridge B. Cut.

[0068] ≪When placing a temporarily placed new deck slab piece N in the area where the cut piece P was removed and moved≫ After repeating the above procedure to remove all the cut pieces P, cut on the main girder D A new deck slab (section N) will be laid on the site where section P was removed.

[0069] The new deck slab pieces N will be transported to the construction site by transport vehicle C and loaded using loading hoist 112. The load is then temporarily placed on the existing deck slab below the loading hoist 112 from the loading platform of transport vehicle C. Furthermore, after removing the deck removal device 30 from the lifting hoist 26 of the lifting mechanism 20, The trolley 21 is moved along the traverse rail 11 to below the loading hoist 112.

[0070] Next, as shown in Figure 9(a), the temporarily placed new floor slab piece N is lifted by the lifting hoist of the lifting mechanism 20. The trolley 21 is suspended using the T26 and moved along the trolley rail 11, and the telescopic frame Move to the work area located in the inner space of the frame mechanism 10. Remove the cut piece P and move it to the site where it was previously moved. The orientation of the newly constructed deck slab piece N when it is placed is such that its length in the direction perpendicular to the bridge axis is greater than its length in the direction of the bridge axis. The swivel trolley 25 of the lifting mechanism 20 is moved along the swivel rail 24, and the newly installed deck slab piece N The orientation is rotated 90 degrees to the position required for installation on the upper surface of the main girder D.

[0071] After this, if necessary, the traverse trolley 21 is moved along the traverse rail 11 as shown in Figure 5. Then move it further to move the lifting mechanism 20 in the bridge axis direction. Alternatively, use the orthogonal trolley 23 The lifting mechanism 20 is moved in the direction perpendicular to the bridge axis by moving it along the orthogonal rail 22, The location of the new deck slab P is positioned on the main girder D at the planned installation location.

[0072] Once the new deck slab P has been aligned, the lifting process is carried out as shown in Figure 9(b). The lifting hoist 26 of mechanism 20 is used to lower the newly constructed deck slab piece N and place it on the upper surface of the main girder D. ru.

[0073] Furthermore, the newly installed deck slab section N can be pre-attached to the lifting hoist 26 of the lifting mechanism 20. It is advisable to provide a detachable mounting device. Also, the removal of the cut piece P and the new floor slab piece N The placement work is performed by cutting P located within the work area provided in the inner space of the telescopic frame mechanism 10. After removing all of them, the new deck slab pieces N may be installed sequentially, or the removal of the cut pieces P and the new The work of placing the floor slab pieces N may be performed alternately.

[0074] After the above work is completed, the heavy object moving device 100 will be removed from the construction site. Without dismantling the moving device 100, the support columns 13 and connecting beams 14 of the gate-type frame 12 are moved to the shortest possible length. After reducing the size to a size that can be loaded onto trailer T, the movement of this reduced heavy object The device 100 is loaded onto trailer T and transported away from the construction site.

[0075] As described above, in the bridge deck replacement method, the cut pieces P of the existing deck are removed from the main girder D. When moving the cut pieces P, the heavy object moving device 100 is used, and the entire process from removal to transport is completed. This allows the work to be carried out and significantly improves work efficiency. Also, the deck slab removal device 30 Since it can be kept supported by the lifting mechanism 20 at all times, the temporary storage area for the deck removal device 30 is This eliminates the need for certain items, allowing for a larger workspace.

[0076] Furthermore, the heavy object moving device 100 is assembled or disassembled each time it is transported to or from the construction site. This eliminates the need for manual labor and significantly improves workability. Furthermore, with just one trailer T... Because it allows for loading and unloading, it reduces transportation costs compared to cases where multiple trailers are required. This makes it possible to shorten the construction period and reduce construction costs.

[0077] Furthermore, the gate-type frame 12 has a structure that includes two support columns, and a pair of gate-type frames 12 The telescopic frame mechanism 10, which is constructed in this way, has a structure that has a total of four support columns 13, so it is small. It can also be installed in small installation spaces. And at the construction site, the heavy object moving device 10 When installing the 0, extend the support columns 13 and connecting beams 14 of the gate-type frame 12 to the desired length. This allows the telescopic frame mechanism 10 to be deployed, creating a desired working area within the interior space. It becomes possible to ensure this.

[0078] The heavy object moving device of the present invention is not limited to the above embodiments, and the spirit of the present invention is as described above. Various changes are possible as long as they do not deviate from the original specifications.

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

[0080] Furthermore, the heavy objects removed by the heavy object moving device are not limited to cut pieces, but also include It is also possible to apply heavy object moving devices to heavy objects.

[0081] Furthermore, there are the traverse rail 11, the right-angle rail 22, the traverse trolley 21, the right-angle trolley 23, and the spiral rail. The quantities of trolleys such as the Trolley 25 are not limited to the quantities mentioned above. [Explanation of symbols]

[0082] 100 Heavy object moving equipment 10 Telescopic frame mechanism 11 Traverse Rail 111 Chain hoist 112 Loading Hoist 12 Gate-type frame 121 Brace material 13 Posts 131 Cylinder 132 Piston Rod 14 Connecting beam 15. Connecting Truss 16 Truss structure 17 Side Panel 20 Lifting mechanism 21 Traverse Trolley 22 Right-angle rails 23 Orthogonal Trolley 24 Swivel Rails 25. Swivel Trolley 251 Connecting material 26 Lifting hoist 30 Floor slab removal device 31 Vertical members 32 Crosspiece 33 frames 34 Anchor members for lifting loads 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 cut piece H high railing B Road bridge D Main girder N Newly installed floor slab

Claims

1. A gantry frame provided in a heavy object moving device comprising: a pair of gantry frames; a transverse rail spanning the pair of gantry frames; a lifting mechanism that moves along the transverse rail; and a deck slab removal device installed on the lifting mechanism, A first support column that can be extended in the height direction, A second support column that can be extended in the height direction, A length-adjustable connecting beam connects the first support column and the second support column, A retractable first brace member, one end of which is rotatably connected to the connecting beam and the other end of which is rotatably connected to the first support column, A gate-type frame comprising: an extendable second brace member, one end of which is rotatably connected to the connecting beam and the other end of which is rotatably connected to the second support column.

2. The first support column has a first cylinder located above and a first piston rod located below, The second support column has a second cylinder located above and a second piston rod located below, The other end of the first blaze material is connected to the first cylinder, The other end of the second blaze member is connected to the second cylinder, as described in claim 1.

3. A pair of gantry frames, each of which is a gantry frame according to claim 1 or 2, A traverse rail is stretched across the pair of gate-shaped frames, A lifting mechanism that moves along the aforementioned traverse rail, A heavy object moving device comprising a deck slab removal device installed on the aforementioned lifting mechanism.

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