JP2004232426A - Floor panel laying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accomplish floor panel replacement work regardless of a place for constructing a bridge, to perform loading and unloading work for a transport vehicle without a crane, and to carry in and out a floor panel laying apparatus without a crane. <P>SOLUTION: This floor panel laying apparatus 1 is adapted to support a beam material 3 disposed in the direction of a main beam 2 with two sets of leg bodies 4 and move on the floor panel 6. The leg bodies 4 are freely varied in space between them. The leg bodies 4 are respectively formed like a portal as a whole by disposing inverted-L shaped members to be bilateral symmetrical, and decreased or increased in size by symmetrically moving a slide arm 10 and expanding and contracting the leg bodies 11 in the same direction. In making a loading platform 12 advance into the interior, the size of the portal is maximized and in loading the loading platform 12 with the floor panle laying apparatus 1, the size of the portal is reduced to the minimum. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of removing a concrete old slab laid on a main girder or a wall of a bridge or a tunnel and installing a new slab, or a floor for erection of a slab in a new bridge or a tunnel. The present invention relates to a plate erection device.
[0002]
[Prior art]
For concrete slabs such as steel bridges that have been in operation for many years, it is necessary to remove old slabs and install new slabs as they age. Many old slabs are made of reinforced concrete supported by the main girder, and must be cut out to a predetermined size and removed before removal.
[0003]
However, in truss bridges and tunnels where the ceiling is limited, it may be difficult to move the floor crane truck to the vicinity of the replacement site for loading and unloading slabs. When employed, there was a problem that the construction period was lengthened and the construction cost was increased.
[0004]
For this reason, even on a bridge where a crane truck cannot enter the main girder, the old floor slab on the girder can be easily removed and the new floor slab can be installed thereafter, and at any location regardless of the bridge erection location There has been a demand for a floor slab erection device that can be used also in the above-mentioned case, and for example, a floor slab replacement device described in Patent Document 1 has been proposed.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. Hei 3-6648
As shown in FIG. 6, this conventional floor slab replacement device has a beam 103 provided with a chain block 102 disposed in the main girder 101 direction, and a wheel 104 mounted on the lower end while supporting the beam 3. The carriage 106 has a plurality of legs 105 and is movable on the floor slab 107.
[0007]
Each of these legs 105 has a driving wheel supporting leg 105a provided at one end of the beam 103, a first running wheel supporting leg 105b provided at the other end, and a second running wheel supporting leg 105c provided therebetween. The legs 105 were arranged so that they could straddle at least one divided floor slab 107a. The bogie 106 is provided with a supporting member 109 for lifting by a crane truck 108. A wire 110 is connected to the supporting member 109 for suspension for loading and unloading operations on a transport vehicle such as a trailer (not shown). I was doing it.
[0008]
Each wheel 104 has a six-wheel structure in which one is disposed on each of the left and right sides of each leg 105, and two flat frame-shaped carriages 106 are arranged in parallel at appropriate positions in the width direction of the cut floor slab 107a. To carry out lifting work. A platform 111 on which a driving device (not shown) is mounted is provided below the driving wheel supporting leg 105a, and the two carts 106 are configured to move in conjunction with each other by an operation panel 112 that operates the driving device. I was
[0009]
To replace the old floor slab 107 on the main girder 101, first, two carriages 106 are moved in parallel so that the chain block 102 is positioned on the divided old floor slab 107a to be replaced. When the floor slab 107a is lifted by the chain block 102, the carriage 106 is moved toward the crane 108. At this time, when the old floor slab 107a is removed, there is a gap, and the leg 105 immediately above the corresponding floor floats in the air, but the other two legs, for example, the driving wheel supporting leg 105a and the first running wheel supporting Since the vehicle can be supported by the legs 105b or by the driving wheel supporting legs 105a and the second traveling wheel supporting legs 105c, there is no obstacle to the movement of the bogie 106 even if there is a gap.
[0010]
After moving to the vicinity of the crane 108, the old floor slab 107a is suspended and then each carriage 106 lifts a new floor slab (not shown). In the conventional slab replacement device, the crane 108 is also used for loading and unloading each slab on a transport vehicle such as a trailer (not shown).
[0011]
The trolley 106 on which the new slab is lifted is moved to a place where the old slab 107a is removed, and the slab is replaced by installing the slab 106a. The floor slab can be easily removed and transported to a location near the crane while suspended, and a new floor slab can be transported and installed, making it easy to replace the floor slab even on bridges where the crane cannot enter. It has the advantage of being able to.
[0012]
[Problems to be solved by the invention]
However, the conventional slab replacement device has a fixed frame and is mainly used for transportation, so it can be used for loading old slabs on transport vehicles such as trailers or loading and unloading new slabs from transport vehicles. Required a separate crane, and a crane was essential for loading and unloading the bogie itself.
[0013]
The present invention has been made in order to solve the problems of the conventional floor slab erection apparatus, and does not require a crane for loading / unloading the floor slab to / from a transport vehicle. Another object of the present invention is to provide a floor slab erection device that does not require a crane.
[0014]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a floor slab erection device of the present invention includes a beam member arranged along a main girder or a wall axis direction, and a plurality of legs for supporting the beam member and mounting a moving member at a lower end. A floor slab erection device for removing a former slab on a main girder or a wall or installing a new slab on a main girder or a wall, comprising a body and a lifting member attached to the beam, A tubular member mounted orthogonally to the beam member and movable in the axial direction of the beam member, a horizontal member movably inserted through the cylindrical member, and a leg that can extend and contract from an end of the horizontal member. At least two sets of left and right inverted L-shaped legs composed of a main body are provided, and the lifting member is a hoist movable along the beam.
[0015]
The pair of left and right inverted L-shaped legs can change the size of the portal formed by moving the horizontal member symmetrically and expanding and contracting the leg body in the same direction. In addition, for example, a roller for traveling on the beam and a bolt for fixing the cylinder at an appropriate position on the beam are attached to the outside of the cylinder for holding the inverted L-shaped legs. The distance between the two pairs of inverted L-shaped legs can be freely changed.
[0016]
When ascending and descending the floor slab, maximize the size of the portal and fix the distance between the two to the length of the suspended load. At this time, if the trailer or the like has such a size as to be able to enter the inside, it can be directly loaded and unloaded on the carrier, and also can be directly lifted on a new floor slab.
[0017]
On the other hand, when loading the floor slab erection device itself on a bed such as a trailer, the size of the portal is first maximized to allow the trailer bed to enter the interior. At this time, a gantry for receiving beams is installed on the carrier. Next, the leg body is contracted, and the beam is lowered and supported and fixed to the gantry. Using the rollers and bolts of the cylinder, move the leg to an appropriate position on the bed and fix it.Adjust the lower end of the leg body so that it is located above the bed. Is reduced to the minimum size to complete loading on the loading platform. Loading and unloading are also possible by the reverse process.
[0018]
This slab erection device can be used not only for replacing old slabs, but also for laying new slabs on new bridges and tunnels. In these cases, the position of the legs is set so that the projecting portion exists in the beam material, and the new floor slab lifted from the carrier is moved to the projecting portion by the hoist, and is lowered and set at a predetermined location.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of a floor slab erection apparatus for performing floor slab replacement, and FIG. 2 is a view as viewed in the direction of arrow A in FIG. The floor slab erection apparatus 1 includes a beam 3 disposed in the main girder 2 direction, and two pairs of legs 4 supporting the beam 3. The leg 4 has wheels 5 at its lower end and is movable along a rail 7 laid on a floor slab 6, and can be stopped at a predetermined position by a lock mechanism (not shown). Note that various moving means such as a roller, a tire, and a chill tank can be applied instead of the wheel 5.
[0020]
As shown in FIG. 2, the beam 3 connects two vertical beams 3a, 3a with a horizontal beam 3b, and the traveling beam 3c of the hoist 8 is fixed thereto. The leg 4 is formed by arranging inverted L-shaped members symmetrically to form a portal shape as a whole. Each inverted L-shaped member is a slide guide that bridges between two vertical beams 3a, 3a. 9, a slide arm 10 through which the slide arm 9 is inserted, and a leg body 11 hanging down from the end thereof.
[0021]
The slide guide 9 is a cylindrical body for movably housing the two left and right slide arms 10 and 10, respectively, and for fixing the rollers 9 a for traveling on the stringers 3 a to the outside and the stringers 3 a at appropriate positions. The distance between the two pairs of legs 4 can be freely changed by mounting the bolt 9b.
[0022]
The leg body 11 is composed of a cylindrical leg guide 11a, a telescopic leg 11b housed therein so as to be extendable and contractible, and a movable leg 11c detachably attached to the lower end thereof. The wheel 5 is built in the movable leg 11c. With such a configuration, the leg 4 can change the size of the portal formed by moving the slide arms 10 and 10 symmetrically and expanding and contracting the leg body 11 in the same direction.
[0023]
FIGS. 1 and 2 show a situation in which after removing the old floor slab 6a on the main girder 2, the new floor slab 6b is lifted from the bed 12 of the trailer and installed at the removed location. The size of the gate is maximized so that the loading platform 12 can enter the interior, and the legs 4 are located around the loading platform 12. When performing this work, the beam 3 is used in a state where the beam 3 is protruded, but the protruding length is such that the front of the beam 3 is on the old floor slab 6a to be removed and the direction of the suspended load is changed. The position of the rear leg 4 is set so that there is sufficient space in the rear. In addition, the trailer is replaced every time when the old floor slab 6a is carried out and when the new floor slab 6b is carried in.
[0024]
The old floor slab 6a is often made of reinforced concrete floor slabs, so when removing it, divide it into a predetermined size with a concrete cutter or the like, and connect it to the flange of the main girder 2 by means of a static breaker, a core cutter, or static destruction due to the injection of expansive material. After being released, the floor is lifted gently by a jack to confirm separation, and a floor slab 8a is attached thereto and lifted by the hoist 8. The floor slab replacement work is performed one by one with the new slab 6b, and the rails 7 are replaced while the slabs are replaced. However, slabs can be laid in the new bridge in the same work process.
[0025]
This floor slab erection apparatus can be loaded on a bed or unloaded from the bed without using a crane or the like. This procedure will be described with reference to FIGS. Here, FIG. 3 is a side view when the loading platform enters, FIG. 4 is a side view when the loading platform is loaded, and FIG. 5 is a front view when the loading platform is loaded. When loading the floor slab erection apparatus 1 on the carrier 12, the carrier 12 on which the gantry 12a for receiving the beam is to be installed is first entered by maximizing the size of the portal of the leg 4 (FIG. 3). Next, the telescopic leg 11b is housed in the leg guide 11a, the leg body 11 is contracted, and the beam 3 is lowered and supported and fixed to the gantry 12a.
[0026]
After depositing the load of the floor slab erection device 1 on the gantry 12a, the movable leg 11c is removed, and the telescopic leg 11b is further contracted so that the lower end of the leg body 11 is positioned above the gantry 12. Thereafter, the legs 4 are moved and fixed to appropriate positions on the carrier 12 by using the rollers 9a and the bolts 9b of the slide guide 9 (FIG. 4). Thereafter, the slide arm 10 is pushed into the slide guide 9 to reduce the gate shape of the leg 4 to a minimum size, whereby the loading on the loading platform 12 is completed (FIG. 5). Loading and unloading are also possible by the reverse process.
[0027]
When a self-propelled trolley is used instead of the movable leg 11c, a control device is provided so that the trolleys work together, and a generator is also mounted. Further, it is desirable that the leg body 11 has a structure in which the reaction force is balanced by an automatic leg hydraulic pressure adjusting device.
[0028]
【The invention's effect】
As described above, the floor slab erection apparatus of the present invention can change the size of the portal formed by the legs and also can freely change the interval between the two pairs of legs. A trailer or the like can enter the inside of the car, and the floor slab can be directly loaded and unloaded on the carrier. In addition, if a loading platform into which a beam receiving platform is installed enters, the gate can be minimized and loading can be performed on the loading platform. Therefore, a crane is not required for loading / unloading the floor slab to / from the transport vehicle, and no crane is required for loading / unloading the slab.
[Brief description of the drawings]
FIG. 1 is a side view of a floor slab erection apparatus that performs floor slab replacement work.
FIG. 2 is a view in the direction of arrow A in FIG. 1;
FIG. 3 is a side view of the floor slab erection device at the time of entry into a loading bed.
FIG. 4 is a side view of the floor slab erection device when the loading platform is loaded.
FIG. 5 is a front view of the floor slab erection device when the loading platform is loaded.
FIG. 6 is a side view of a conventional floor slab replacement device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor slab erection apparatus 2 Main girder 3 Beam 4 Leg 5 Wheel 6 Floor slab 9 Slide guide 10 Slide arm 11 Leg body 12 Loading platform

Claims (1)

A beam member provided along the main girder or the wall axis direction, a plurality of legs supporting the beam member and attaching a moving member to a lower end thereof, and a lifting member attached to the beam member In a floor slab erection device for removing an old slab on a girder or a wall or installing a new slab on a main girder or a wall, the leg is placed orthogonally to the beam and is mounted in an axial direction of the beam. On the other hand, at least two pairs of left and right inverted L-shaped legs each comprising a movable cylinder, a horizontal member movably inserted through the cylinder, and a leg body that can extend and contract from an end of the horizontal member. And the lifting member is a hoist movable along the beam.

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