JP2022097988A - Heavy article tranport truck and using method thereof - Google Patents

Abstract

To provide a heavy article transport truck and a transport and installation method in which an extremely heavy member can be safely transported and installed at a predetermined position in a field where a large heavy machinery cannot be used.SOLUTION: As a heavy article transport truck C, A box frame body 1 is formed with an upper frame 11, an underframe 12, and a support rod 13. A rail material 2 is attached to the upper frame 11 so as to project from directly above both ends of the underframe 12. A trolley 3 is supported by the rail material 2 and a chain block 4 is provided to the trolley 3, and a caster 5 is provided to the underframe 12. The trolley 3 runs along the rail material 2 between a position projecting from directly above the one end and a position projecting from directly above the other end of the underframe 12. When using the heavy article transport truck C, a heavy article is lifted and loaded on the underframe 12 and moved to the vicinity of a predetermined installation place, and then can be accurately hung down at the predetermined installation place.SELECTED DRAWING: Figure 1

Description

The present invention relates to a trolley for transporting and installing a heavy object and a method of using the trolley when constructing a structure or the like.

In recent years, with the aging of expressways, construction work to replace the bridge girders of elevated bridges has been carried out in various places, but in urban areas, as shown in FIG. 12, traffic volume along the viaduct 51a of the expressway 51. There is a section in which general roads 52 with many roads are parallel, and in such sections, heavy objects are removed with the general road 52 closed and a large crane car with a long boom laid sideways on the viaduct of the highway 51. Or installation work cannot be performed.

In order to carry out construction under these conditions, a construction method will be adopted in which a new bridge girder is assembled under the existing bridge girder, the existing bridge girder is divided into small pieces and removed, and then the new bridge girder is lifted with a jack. There is.

However, according to this construction method, when constructing a new bridge girder, the existing bridge girder exists above the work site, so a large crane vehicle can still be used as a means of transporting heavy objects such as wall railings. Instead, as a countermeasure, for example, it is conceivable to use a compact manual arm type heavy object lifting and transporting vehicle as described in Patent Document 1 below.

Japanese Unexamined Patent Publication No. 2001-31383

However, the heavy object lifting carrier described in Patent Document 1 is intended to be used for assembling a machine mainly composed of metal, and is not suitable for transporting a very heavy concrete member. ..

Therefore, it is an object of the present invention to provide an apparatus and a method capable of safely transporting a very heavy member and installing it at a predetermined position in a field where a large heavy machine cannot be used.

In order to solve the above problems, in the present invention, a box-shaped frame is formed of an upper frame, an underframe, and a support column, and a rail material is attached to the upper frame so as to project from directly above both ends of the underframe. The rail material supports the trolley, the trolley is equipped with a chain block, and the underframe is equipped with casters.
The trolley is intended to provide a trolley for transporting heavy objects that travels along the rail material between a position protruding from directly above one end of the underframe and a position protruding from directly above the other end.

Further, using the heavy object transporting trolley, the heavy object is lifted by the chain block in a state where the trolley supported by the rail material is in a position of projecting from directly above one end of the underframe.
The trolley is run along the rail material, the heavy object is positioned above the underframe, and then the heavy object is unloaded by the chain block and placed on the underframe.
In that state, the wheels of the casters are rolled to move the heavy load transport trolley to the vicinity of the predetermined installation location of the heavy load.
The chain block lifts a heavy object from the underframe, runs the trolley along the rail material to a position where it projects from directly above the other end of the underframe, and lowers the heavy object to a predetermined installation location with the chain block. We decided to provide a method.

In addition, as an application, when replacing the bridge girder in the bridge, a new main part of the bridge girder that assembles the main girder and the floor slab is constructed below the existing bridge girder.
The heavy load transport trolley is positioned near one side of the new bridge girder floor slab, and the wall balustrade to be installed on the other side edge of the floor slab is closer to one side edge of the floor slab than the heavy load transport trolley. Temporarily placed in
From that state, a method for transporting and installing the wall balustrade by transporting the wall balustrade to a position facing the other side edge of the floor slab and installing the wall balustrade in a predetermined place by the above-mentioned method using the heavy load transport cart is provided. I decided to do it.

In the heavy load transport trolley according to the present invention, the rail material attached to the upper part of the box formwork protrudes from directly above one end and the other end of the underframe having casters, and a chain block is provided along the rail material. Since the structure is such that the trolley runs, by using it, heavy concrete objects such as wall balustrades are lifted, placed on the underframe, moved to the vicinity of the specified installation location, and then moved to the specified installation location. Can be hung down. Therefore, in a field where a large heavy machine cannot be used, a very heavy member can be safely transported and accurately installed at a predetermined position.

A perspective view from above showing an embodiment of a heavy load carrying trolley according to the present invention. Same as above (2A) schematic front view, (2B) schematic side view Perspective view showing the installation state of the support along the pier of the viaduct A perspective view showing the assembled state of the new bridge girder below the existing bridge girder as above. A perspective view showing the state where the wall balustrade is installed on the floor slab of the new bridge girder as above. Explanatory drawing of the installation method of the wall balustrade using the same heavy load transport trolley A perspective view showing the dismantling and removal process of the existing bridge girder as above. A perspective view showing the process of raising the deck of the new bridge girder as above. A perspective view showing the process of connecting the new bridge girders as above and supporting them with piers. A perspective view showing the process of installing a wall balustrade at the connecting part of the new bridge girder as above. A perspective view showing the state where the new bridge girder as above is paved and road markings are installed. A bird's-eye view of the highway where bridge girder replacement work is being carried out from above

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the heavy object transporting trolley C according to the present invention is for transporting and installing a heavy concrete wall railing column W, and is a box form made of steel. Body 1 is the basic structure.

The box-shaped frame body 1 is composed of a rectangular upper frame 11 and an underframe 12, and columns 13 that stand upright at the four corners. The columns 13 are divided into an upper column 13a and a lower column 13b, and the upper frame 11 and the upper column 13 The upper frame body 1a is formed from the pillar 13a, and the lower frame body 1b is formed from the underframe 12 and the lower pillar 13b, respectively.

The upper frame 11 is formed by welding a pair of short-sided and long-sided H-shaped steel sapwoods 11a and 11b, and passing braces 11c diagonally.

An upper column 13a is welded to the corner where the sapwood 11a and 11b are joined, and is reinforced with reinforcing ribs so that the angle of the upper column 13a with respect to the sapwood 11a and 11b is maintained at a right angle.

The underframe 12 is formed by welding a pair of short-sided and long-sided H-shaped steel sapwoods 12a and 12b, and two receiving materials 12c for receiving the wall railings W between the lower surfaces of the opposing sapwoods 12b. It was handed over and welded. A rubber cushioning material 12d is attached to the upper surface of the receiving material 12c.

A lower column 13b is welded to the corner where the sapwood 12a and 12b are joined, and is reinforced with reinforcing ribs so that the angle of the lower column 13b with respect to the sapwood 12a is maintained at a right angle.

The upper frame body 1a in which the upper pillar 13a hangs down from the upper frame 11 and the lower frame body 1b in which the lower pillar 13b stands upright from the underframe 12 are an adjustment stand for height adjustment between the upper pillar 13a and the lower pillar 13b. 13c is interposed and they are connected by bolts. On the surface of the upper frame 11 and the underframe 12 on the short side side, the brace 13d is passed to the facing columns 13.

A rail member 2 of H-shaped steel is bolted to the lower surface of the opposite sap member 11b of the upper frame 11 so as to project from directly above both ends of the short side of the underframe 12. A trolley 3 is supported on the lower flange of the rail material 2, and the trolley 3 is provided with a chain block 4.

The trolley 3 runs along the rail material 2 between a position protruding from directly above one end of the underframe 12 and a position protruding from directly above the other end.

At the four corners of the underframe 12, casters 5 capable of changing the direction of the wheels are provided. The lower pillar 13b is provided with a cylindrical handle holder 5b for holding the L-shaped caster operation handle 5a. The caster operating handle 5a is pulled out from the handle holder 5b and engaged with the portion holding the wheels of the caster 5 when the caster 5 is turned to change the moving direction of the heavy load carrying carriage C.

Further, on the lower surfaces of both ends of the sapwood 12b of the underframe 12, jack receivers 12e for receiving the head of the jack J that lifts the box-shaped frame 1 when the caster 5 is changed in direction or the like are attached. A counterweight 6 corresponding to the weight of the heavy object is attached to the side surface of the web of the sapwood 12b with a bolt in order to prevent the heavy object from tipping over when it is lifted.

In order to make the underframe 12 horizontal when the moving surface of the heavy load carrying trolley C is tilted between the mounting seat of the caster 5 and the lower surface of the underframe 12, an appropriate number of height adjusting plates 7 Is sandwiched and fixed with bolts. As a mechanism for leveling the underframe 12, a well-known screw-type mechanism or the like may be adopted.

Further, on the upper surface of one of the sapwoods 12a, in addition to the jack storage portion 12f for storing the jack J, a plurality of upright holding rods 12g are provided, and the height adjusting plate 7 and the bottom of the jack J are provided. The liner plate 8 for laying on the liner plate 8 can be held in a state where a plurality of holding rods are stacked by inserting a holding rod 12 g into a hole at a corner.

Using the heavy load transport trolley C having the above configuration, as shown in FIG. 12, for the viaduct 51a in which the up line and the down line of the expressway 51 are parallel to each other, the replacement work of each bridge girder is performed. As shown in FIG. 3, the support work 21 is installed along the pier 53 of the viaduct 51a.

Next, as shown in FIG. 4, the main girder 55a and the floor slab 55b are assembled on the work receiving seat 22 installed on the ground below the existing bridge girder 54 to construct a new main body of the bridge girder 55. do.

Then, as shown in FIG. 5, with the existing bridge girder 54 still existing above the new bridge girder 55, wall railings W having a weight exceeding 3 tons per piece are placed on both side edges of the deck 55b, respectively. Install them side by side in the designated place along the line.

In this work, as shown in FIG. 6, the space between the parallel high bridges 51a is used, and a heavy load carrier C is mounted near one side of the deck 55b of the new bridge girder 55 by a small crane or the like. One wall balustrade W is installed at a predetermined position along one side edge of the floor slab 55b, and the other wall balustrade W is temporarily placed between one side edge of the floor slab 55b and the heavy load carrier C. ..

Then, in the heavy load transporting carriage C, the temporarily placed wall balustrade W is lifted by the chain block 4 in a state where the trolley 3 is in a position of projecting from directly above one end of the underframe 12. At that time, the hook at the lower end of the load chain of the chain block 4 is engaged with the head of the lifting pin whose lower portion is buried in the recess on the top surface of the wall balustrade W via a C-shaped hanging bracket. Wind up the load chain (see Fig. 2).

Next, the trolley 3 is run along the rail material 2, the wall balustrade W is positioned above the underframe 12, and then the wall balustrade W is lowered by the chain block 4 and placed on the receiving material 12c of the underframe 12. do. By repeating this process, a plurality of wall railings W arranged in a row are loaded on the underframe 12.

The wheels of the casters 5 are oriented in the direction in which the wall railing W to be transported is planned to be installed. However, if the bridge girder 55 is tilted in the width direction corresponding to the curved section of the highway 51, the wall railing W A tire stopper 23 is placed along the wheels of the casters 5 so that the heavy load carrying carriage C does not suddenly move to the lower side of the floor slab 55b during the lifting work.

In this state, the wheels of the casters 5 roll to move the heavy load carrier C to the vicinity of the predetermined installation location of the wall railing column W facing the other side edge of the floor slab 55b.

Next, the wall balustrade W is lifted from the underframe 12 by the chain block 4, the trolley 3 is run along the rail material 2 to a position where it projects from directly above the other end of the underframe 12, and the wall balustrade W is designated by the chain block 4. Take it down to the place where it is installed and fix it in that place.

Then, by changing the direction of the casters 5, the heavy load carrying carriage C is moved in the length direction of the bridge girder 55, the wall railings W are lowered from the underframe 12, and a plurality of wall rails W are arranged along the other side edge of the floor slab 55b. ..

After that, the existing bridge girder 54 remaining above the new bridge girder 55 is dismantled and removed. In this work, the floor slab 54b of the existing bridge girder 54 was removed, and as shown in FIG. 7, the main girder 54a was cut into small pieces and subdivided using the other parallel viaduct 51a. The main girder 54a is removed by a large crane 24.

When the removal of the existing bridge girder 54 is completed, as shown in FIG. 8, the new bridge girder 55 is sequentially raised to a predetermined height by a jack (not shown) along the support work 21.

Next, as shown in FIG. 9, in order to connect the main girder 55a and the deck 55b of the new bridge girder 55 above the pier 53, the main girder 55a and the main girder 55a carried by the truck 25 using the other high bridge 51a. The extension of the deck 55b is placed on the pier 53 by the crane 24, connected to the ground girder 55, and the main girder 55a and the deck 55b are passed between the piers 53 and erected.

Further, as shown in FIG. 10, the connecting portion of the wall railing column W carried by the truck 25 using the other viaduct 51a to the floor slab 55b of the connecting portion of the new bridge girder 55 is designated by a large crane 24. Install in place.

Finally, as shown in FIG. 11, the construction of this section is completed by paving the floor slab 55b of the new bridge girder 55, constructing road markings, and removing temporary objects for work.

As described above, in the heavy load transporting carriage C, the rail material 2 attached to the upper part of the box-shaped frame 1 projects from directly above one end and the other end of the underframe 12 having the casters 5, and is attached to the rail material 2. Since the trolley 3 provided with the chain block 4 runs along the structure, a heavy concrete object such as a wall balustrade W is lifted and placed on the underframe 12 by its use, and is near a predetermined installation location. After moving to, it can be hung at the designated installation location.

In the above embodiment, the case where the heavy load transportation carriage C is used for the replacement work of the bridge girder in the viaduct 51a has been illustrated, but the heavy load transportation carriage C having the above configuration is not limited to such an application. In the field where large heavy machinery cannot be used, various kinds of very heavy members can be safely transported and accurately installed in a predetermined position.

Further, the form of the trolley C for transporting heavy objects can be appropriately changed according to the shape of the heavy objects to be transported and the situation at the site where the heavy objects are used.

1 Box formwork 1a Upper framer 1b Lower framer 2 Rail material 3 Trolley 4 Chain block 5 Caster 5a Caster operation handle 5b Handle holder 6 Counterweight 7 Height adjustment plate 8 Liner plate 11 Upper frame 11a, 11b Sapwood 11c Brace 12 Underframe 12a, 12b Sap material 12c Receiving material 12d Cushioning material 12e Jack receiver 12f Jack storage part 12g Holding rod 13 Pillar 13a Upper pillar 13b Lower pillar 13c Adjustment stand 13d Brace 21 Supporting work seat 23 Tire stopper 24 Crane 25 Truck 51 Highway 51a High bridge 52 General road 53 Formwork 54 Bridge girder (existing)
54a Main girder 54b Floor slab 55 Bridge girder (new)
55a Main girder 55b Floor slab C Heavy load carrier J Jack W Wall railing

Claims (3)

The box-shaped frame body (1) is formed of an upper frame (11), an underframe (12), and a support column (13) so as to project onto the upper frame (11) from directly above both ends of the underframe (12). A rail material (2) is attached, a trolley (3) is supported on the rail material (2), a chain block (4) is provided on the trolley (3), and casters (5) are provided on the underframe (12). ) Is provided,
The trolley (3) is a heavy load transporting trolley (C) that travels along the rail material (2) between a position protruding from directly above one end of the underframe (12) and a position protruding from directly above the other end. ). The trolley (C) for transporting heavy objects according to claim 1 is used, and the trolley (3) supported by the rail material (2) is in a position of projecting from directly above one end of the underframe (12). , Lift heavy objects with the chain block (4),
The trolley (3) is run along the rail material (2) to position a heavy object above the underframe (12), and then the heavy object is unloaded by the chain block (4) to lower the underframe. Placed in (12)
In that state, the wheels of the caster (5) are rolled to move the heavy load carrying trolley (C) to the vicinity of the predetermined installation location of the heavy load.
A heavy object is lifted from the underframe (12) by the chain block (4), and the trolley (3) is driven along the rail material (2) to a position where the trolley (3) projects from directly above the other end of the underframe (12). A method of transporting and installing a heavy object by using the chain block (4) to lower the heavy object to a predetermined installation location. When replacing the bridge girder in the bridge, construct a new main part of the bridge girder (55) by assembling the main girder (55a) and the deck (55b) below the existing bridge girder (54).
The heavy load carrier (C) is positioned near one side of the deck (55b) of the new bridge girder (55), and the wall rail (W) to be installed on the other side edge of the deck (55b) is described above. Temporarily place it closer to one side edge of the deck (55b) than the trolley (C) for transporting heavy objects.
From that state, the wall balustrade (W) is transported to a position facing the other side edge of the floor slab (55b) by the method according to claim 2 using the heavy load transport trolley (C). How to transport and install the wall railing (W) to be installed in the place of.

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