Bedplate replacement device

Abstract

To provide a floor slab replacing device capable of shortening a working process from carrying-in to replacement of a floor slab.SOLUTION: A floor slab replacing device is provided with a vehicle 20 having a load-carrying platform 21 on which a floor slab can be loaded, a support frame 30 erected on the load-carrying platform 21, a traveling rail 33 extending in the longitudinal direction of the vehicle 20 and supported by the support frame 30 above the load-carrying platform 21, a traveling body 40 movably attached to the traveling rail 33, and an arm 50 extending rearward from the traveling body 40. The arm 50 can be tilted in the vertical direction, and when the traveling body 40 is moved to the rear side of the vehicle 20, the tip of the arm 50 is positioned behind the load-carrying platform 21, and when the traveling body 40 is moved to the front side of the vehicle 20, the tip of the arm 50 is positioned above the load-carrying platform 21.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a floor slab replacement device.

Background Art

[0002] In repair work such as for road bridges, a construction method is carried out in which a deteriorated part of a concrete floor slab is removed and a new floor slab is laid. In a construction method of removing an existing floor slab and installing a new floor slab, in order to move the floor slab, a hoisting vehicle such as a crane truck may be used. However, it is necessary to separately prepare a transport vehicle for carrying out the removed floor slab and carrying in the newly installed floor slab. For example, when only one lane of the road width can be blocked or when working in a narrow area, the frequency of entry and exit and movement of construction vehicles becomes high, and there are cases where construction cannot be carried out efficiently.

[0003] As a method of replacing a floor slab without using a crane truck, a method using a gantry-type hanging device movable in the bridge axis direction is known. For example, Patent Document 1 describes a method of replacing a concrete floor slab in which a removed floor slab is suspended by a hanging device, moved to a transport vehicle and placed on the loading platform of the transport vehicle, and then a newly installed floor slab is suspended by the hanging device and moved to be newly installed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the invention described in Patent Document 1, after loading the lifting device on the loading platform of the transport vehicle and transporting it to the replacement location, it is necessary to lower the lifting device from the loading platform and install it at the replacement location of the floor slab. Further, after the work is completed, since it is necessary to return the floor slab replacement device to the loading platform again, there is a problem that the work takes time. Furthermore, it is necessary to prepare a separate transport vehicle for carrying out the removed floor slab and for carrying in the newly installed floor slab.

[0006] From such a viewpoint, an object of the present invention is to provide a floor slab replacement device capable of efficiently performing the loading / unloading and replacement work of the floor slab.

Means for Solving the Problems

[0007] The floor slab replacement device of the present invention for solving the above problems includes a vehicle having a loading platform capable of loading a floor slab, a support frame erected on the loading platform, a traveling rail extending in the front-rear direction of the vehicle and supported by the support frame above the loading platform, a traveling body movably attached to the traveling rail, and an arm extending rearward from the traveling body. The arm is tiltable in the vertical direction, The front end of the traveling rail is located in front of the front end of the loading platform and when the traveling body is moved to the rear side of the vehicle, the tip of the arm is located behind the loading platform, and when the traveling body is moved to the front side of the vehicle, the tip of the arm is located above the loading platform.

[0008] According to the present invention, with the floor slab (removed floor slab or newly installed floor slab) attached to the tip of the arm, the arm can move in the front-rear direction of the vehicle, and further, since the arm is tiltable, it is possible to perform the work of lifting the removed floor slab from the removal position and loading it on the loading platform and the work of lifting the newly installed floor slab loaded on the loading platform and lowering it to the installation position. Therefore, it is not necessary to prepare a separate crane vehicle and transport vehicle, and the loading / unloading and replacement work of the floor slab can be efficiently performed.

[0009] Further, it is preferable that the arm is rotatable in the left-right direction.

[0010] According to the present invention, since the arm rotates, even when there is a deviation in the parking position of the vehicle, it is possible to carry in, carry out, and replace the floor plate.

[0011] The arm preferably has a connecting portion connected to the floor plate, and the connecting portion is rotatable in the left - right direction.

[0012] According to the present invention, since the suspended floor plate can be rotated, the orientation of the floor plate can be easily adjusted.

[0013] The proximal end side of the arm is preferably rotatably supported by the traveling body, and the distal end side of the arm is supported by the traveling body via a tilting cylinder. According to the present invention, the floor plate can be moved up and down in a more stable state compared to the case of lifting and lowering the floor plate using a wire.

Effects of the Invention

[0014] According to the floor - plate replacement device of the present invention, it is possible to provide a floor - plate replacement device capable of efficiently carrying in, carrying out, and replacing the floor plate.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0016] Embodiments of the present invention will be described with appropriate reference to the drawings. The present invention is not limited only to the following embodiments.

[0017] As shown in Fig. 1, the floor slab replacement device 1 of the present embodiment includes a tractor 10, a vehicle 20, a support frame 30, a traveling body 40, and an arm 50. The floor slab replacement device 1 is a device for loading, unloading, and replacing floor slabs with a single unit without using a hoisting vehicle such as a crane.

[0018] The tractor 10 is a vehicle that towes the vehicle 20. The vehicle 20 is a trailer connected to the rear of the tractor 10 and includes a loading platform 21 capable of loading floor slabs. Wheels capable of traveling on the road are provided at the rear of the vehicle 20, and outriggers projecting toward the side of the vehicle 20 are provided at the front and rear of the vehicle 20. The outriggers of the present embodiment are attached for the purpose of dispersing the reaction force when a load equal to or greater than the self-weight of the vehicle 20 (the load associated with loading and unloading the floor slab) is applied, but the vehicle 20 may be lifted. The shape of the loading platform 21 is not particularly limited, but the length in the front-rear direction is preferably such that the removed floor slab P and the newly installed floor slab Q can be loaded simultaneously.

[0019] (Support Frame 30) The support frame 30 includes a pair of support structure surfaces 31, 31 erected on the left and right edges of the loading platform 21, a beam member 32 (see Fig. 2) connecting the upper parts of the support structure surfaces 31, 31, and a traveling rail 33 supported by the beam member 32. The support structure surface 31 is, for example, a planar truss structure. The support structure surface of the present embodiment includes upper and lower girders (upper chord members, lower chord members) and vertical members (column members, diagonal members) arranged between the upper and lower girders. In Fig. 1, the illustration of the diagonal members is partially omitted (only the diagonal members arranged in the front-rear direction are illustrated). As shown in Fig. 3, a plurality (six in the present embodiment) of beam members 32 are arranged at intervals in the front-rear direction. The traveling rail 33 extends in the front-rear direction. In the present embodiment, a pair of traveling rails 33 are arranged at intervals on the left and right and are respectively attached to the lower surfaces of the respective beam members 32. The front end of the traveling rail 33 is located in front of the front end portion of the loading platform 21, and the rear end of the traveling rail 33 is located above the rear end portion of the loading platform 21. The constituent members of the support structure surface 31, the beam member 32, and the traveling rail 33 are formed of steel materials such as H-shaped steel, rail I-shaped steel, and frame angle pipes.

[0020] (Traveling body 40) As shown in Fig. 2, the traveling body 40 includes a main body portion 44 formed by combining steel materials in a lattice shape, a trolley 41 that moves along the traveling rails 33, 33, a swivel body 42 that swivels with respect to the main body portion 44, and a swivel cylinder 43 interposed between the main body portion 44 and the swivel body 42. A pair of trolleys 41 (a total of four) are provided on each traveling rail 33 in the front and rear directions. The trolley 41 includes a driving trolley and a driven trolley. The driving trolley is configured to move in the front and rear directions along the traveling rail 33 by driving a roller 41a that engages with the traveling rail 33 with a motor. At the lower end of the traveling body 40, an arm 50 described later is rotatably attached via the swivel body 42.

[0021] As shown in Fig. 1, the swivel body 42 is formed by combining steel materials in a lattice shape and is attached to the lower surface of the main body portion 44 via a swivel bearing. The swivel cylinder 43 is, for example, a hydraulic cylinder. One end of the swivel cylinder 43 is fixed to the swivel body 42, and the other end of the swivel cylinder 43 is fixed to the main body portion 44. The swivel body 42 rotates by advancing and retracting the rod of the swivel cylinder 43, and as shown in Fig. 3, the arm 50 rotates in the left - right direction.

[0022] (Arm 50) As shown in Fig. 1, the arm 50 includes a connection portion 51, a shaft portion 52, an arm portion 53, and a tilting cylinder 54.

[0023] The connection portion 51 is configured to be connectable to the floor slab. The connection portion 51 of the present embodiment is fixed to an insert embedded in the floor slab by bolts. The connection portion 51 is rotatably supported by the arm portion 53 via the shaft portion 52.

[0024] The wrist part 53 normally extends parallel along the front-rear direction of the loading platform 21. The wrist part 53 is formed by combining steel materials in a ladder shape. The base end part (front end part) of the wrist part 53 is connected to the bracket of the swivel body 42 via a pin and can tilt (swivel) up and down around the pin. That is, the base end side of the arm 50 is rotatably supported by the traveling body 40. The tilting cylinder 54 is interposed between the swivel body 42 and the wrist part 53. The tilting cylinder 54 is, for example, a hydraulic jack. The rear end part of the tilting cylinder 54 is connected to the front end part of the swivel body 42, and the front end part of the tilting cylinder 54 is connected to the wrist part 53 in front of the swivel body 42. That is, the tip side of the arm 50 is supported by the traveling body 40 via the tilting cylinder 54. The wrist part 53 tilts up and down by advancing and retracting the rod of the tilting cylinder 54. Also, as shown in Fig. 1(a), when the traveling body 40 is located on the rear side of the traveling rail 33, the wrist part 53 protrudes to the rear side of the loading platform 21. Also, as shown in Fig. 1(b), when the traveling body 40 is located on the front side of the traveling rail 33, it is located above the loading platform 21.

[0025] Note that the controller for operating the traveling body 40 and the arm 50 may be a wired type or a wireless type.

[0026] (Method for replacing the floor slab) A method for replacing the floor slab using the floor slab replacement device 1 of the present embodiment will be described with reference to Fig. 1. Here, the process of installing the new floor slab Q after removing the removed floor slab P will be described. The floor slabs P and Q are rectangular in plan view, and the length in the front-rear direction is formed shorter than the length in the direction perpendicular to the front-rear direction.

[0027] First, place the arm 50 on the removal floor plate P. Here, if the position of the arm 50 is shifted left or right, the swivel body 42 can be swiveled (rotated) by driving the swivel cylinder 43 to position the tip of the arm 50 at the center of the floor plate. Next, drive the tilting cylinder 54 to tilt the arm portion 53 of the arm 50 downward. After fixing the connecting portion 51 of the arm 50 to the removal floor plate P, tilt the arm portion 53 upward. Then, adjust the longitudinal direction of the removal floor plate P to be in the front-rear direction by rotating the connecting portion 51 90 degrees around the shaft portion 52.

[0028] After that, with the removal floor plate P attached to the tip of the arm 50, move the traveling body 40 forward along the traveling rail 33 by each trolley 41. When the removal floor plate P has been moved above the loading platform 21, drive the tilting cylinder 54 to tilt the arm 50 downward and load the removal floor plate P onto the loading platform 21. Then, the connecting portion 51 releases the connection state with the removal floor plate P.

[0029] Subsequently, move the traveling body 40 to the front end portion of the traveling rail 33 by each trolley 41. Then, drive the tilting cylinder 54 to tilt the arm portion 53 of the arm 50 downward and connect the connecting portion 51 of the arm 50 to the newly installed floor plate Q loaded on the loading platform 21. Note that the newly installed floor plate Q is loaded on the loading platform 21 with its longitudinal direction in the front-rear direction. Then, tilt the arm portion 53 of the arm 50 upward and move the traveling body 40 to the rear end portion of the traveling rail 33.

[0030] When the newly installed floor plate Q has been moved above the installation position, adjust the short side direction of the newly installed floor plate Q to be in the front-rear direction by rotating the connecting portion 51 90 degrees around the shaft portion 52. After adjusting the direction of the newly installed floor plate Q, drive the tilting cylinder 54 to tilt the arm portion 53 of the arm 50 downward and install the newly installed floor plate Q in the portion where the removal floor plate P was removed. Then, the connecting portion 51 releases the connection state with the newly installed floor plate Q.

[0031] According to the floor slab replacement device 1 according to the present embodiment described above, with the floor slab (removed floor slab P or newly installed floor slab Q) attached to the tip of the arm 50, the arm 50 can move in the front-rear direction of the vehicle 20, and further, since the arm 50 can be tilted, the operation of lifting the removed floor slab from the removal position and loading it onto the loading platform 21 and the operation of lowering the newly installed floor slab loaded on the loading platform 21 to the lifting and installation position can be performed. Therefore, it is not necessary to prepare a crane vehicle and a transport vehicle separately, and the loading, unloading, and replacement operations of the floor slab can be performed efficiently.

[0032] Further, the arm 50 can rotate with respect to the traveling body 40. Therefore, even when the parking position of the vehicle 20 is shifted, the loading, unloading, and replacement operations of the floor slab can be performed.

[0033] Further, the arm 50 has a connection portion 51 connected to the floor slab, and the connection portion 51 can rotate in the left-right direction. Therefore, since the suspended floor slab can be rotated, the orientation of the floor slab can be easily adjusted.

[0034] In addition, since the arm is tilted by the tilting cylinder 54, the floor slab can be moved up and down in a more stable state compared to the case where the floor slab is lifted and lowered using a wire.

[0035] Further, the beam member 32 and the traveling rail 33 protrude forward from the loading platform 21. As a result, with the floor slab suspended, the traveling body 40 can move forward from the loading platform 21. That is, it becomes possible to load the floor slab at the front part of the loading platform.

[0036] The embodiments according to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and each component can be appropriately changed without departing from the gist of the present invention.

Explanation of Reference Numerals

[0037] 1 Floor slab replacement device 10 Tractor 20 Vehicle 21 Loading platform 30 Support Frame 31 Support Structure Part 32 Beam Material 33 Running Rail 40 Running Body 41 Trolley 42 Swiveling Body 43 Cylinder for Swiveling 44 Main Body Part 50 Arm 51 Connection Part 52 Shaft Part 53 Arm Part 54 Cylinder for Tilting P Removed Floor Plate Q Newly Installed Floor Plate

Claims

1. A vehicle having a loading platform on which a bed plate can be loaded, A support frame erected on the loading platform, A traveling rail extending in the longitudinal direction of the vehicle and supported by the support frame above the loading platform, A traveling body movably attached to the traveling rail, An arm extending rearward from the traveling body, and comprising: The arm is tiltable in the vertical direction, The front end portion of the traveling rail is located in front of the front end portion of the loading platform, When the traveling body is moved to the rear side of the vehicle, the tip of the arm is located behind the loading platform A bed plate replacement device, characterized in that when the traveling body is moved to the front side of the vehicle, the tip of the arm is located above the loading platform.

2. The bed plate replacement device according to claim 1, wherein the arm is rotatable in the left-right direction.

3. The arm has a connecting portion connected to the bed plate, The bed plate replacement device according to claim 1 or claim 2, wherein the connecting portion is rotatable in the left-right direction.

4. The proximal end side of the arm is rotatably supported by the traveling body, The bed plate replacement device according to any one of claims 1 to 3, wherein the distal end side of the arm is supported by the traveling body via a tilting cylinder.

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