JPS6349010B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile formwork apparatus suitable for constructing concrete structures such as culverts having curved sections.

BACKGROUND OF THE INVENTION In recent years, large mobile formwork equipment has been used to construct culverts, elevated structures, etc. on roads, railways, etc., and it has become possible to perform highly efficient construction.

By the way, these concrete structures have not only straight parts but also many curved parts, and since large-scale mobile formwork equipment is generally formed with a long overall length, it is necessary to adapt it when constructing curved parts. Therefore, it is necessary to make a special short device and connect many of them together, to make a formwork device specifically for that curve, or to use the traditional method of hand-assembling. They also use formwork. Therefore, the construction of structures having curved portions has many disadvantages, such as requiring a lot of labor and expense and significantly reducing construction efficiency.

The present invention improves the drawbacks of the large-scale movable formwork device as described above, and by combining a freely curveable formwork device and a traveling truck, it is suitable for not only straight sections such as culverts but also curved sections. The purpose of this is to provide a moving formwork device that can be adapted to the construction of concrete structures such as culverts that have curved sections, thereby improving the efficiency of constructing concrete structures such as culverts and reducing labor and costs. It is intended to be

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a front view showing a movable formwork device according to the present invention, and Fig. 2 is a partially cutaway plan view thereof. It is formed by integrally connecting the main frames 1, 1 arranged at 2
A traveling platform vehicle 6, 6 is provided with wheels 4 and a lifting device 5 that can run along a rail 3 installed at 6, and by operating the lifting device 5, the traveling platform A can be moved along an arrow. It can be raised and lowered as desired.

Further, B is a formwork device placed on the traveling truck A, in which a plurality of slab beams 8 formed long in the width direction of the traveling truck A are arranged in parallel at a required interval, A plurality of connecting pieces 7, 7 are protruded from the side surface of the intermediate part of this slab beam 8 at required intervals, and each slab beam 8, 8 is provided between the connecting pieces 7, 7 facing each other. Connect both ends of the connecting rod 10 to pins 9, 9.
are pivotally connected to each other so as to be movable in parallel. The connected body of the slab beams 8, 8 is placed on the traveling truck A via the connecting rods 10, 10.

Also, side wall vertical flaps 11 are pivotally attached to both ends of each slab beam 8 by pins 12, and side wall sheath plates 13 are provided on the outside of these side wall vertical flaps 11, 11.
is attached to form the side wall formwork 14.
The proper lower part of the side wall formwork 14 is located at the main frame body 1, 1.
and a telescopic device 15 such as a turnbuckle or cylinder, and by the telescopic operation of the telescopic device 15, the side wall formwork 14 can be tilted arbitrarily about each pin 12, 12 as shown by the arrow in Fig. 1. It's becoming like that. Furthermore, slab sheathing plates 16 are placed or attached as appropriate on the slab beams 8, 8, and a slab formwork 17 is formed by these slab beams 8 and slab sheathing plates 16. .

A telescoping device 18 such as a turnbuckle or cylinder is installed in the diagonal direction of the rectangular surrounding frame formed by the slab beam 8 and the connecting rods 10.
Its both ends are pivotally connected to the slab beam 8 and the connecting rod 10 by pins 19, and by expanding and contracting the expansion device 18, the slab beam 8 and the connecting rod 10 are connected.
and rotates relative to each other around the pin 19, the intersection angle between the slab beam 8 and the connecting rod 10 changes, and each slab beam 8 is relatively translated parallel to each other in its length direction. The rectangular surrounding frame formed by the beams 8, 8 and the connecting rods 10, 10 is deformed into a diamond shape. As a result, the planar shape of the formwork device B as a whole is curved in its length direction as shown in FIG. 3, and one of the side wall forms 14, 14 is deformed into a convex shape and the other into a concave shape. , it is possible to form a shape that follows the curve of the constructed structure.

Note that when performing such transformation operations,
This is preferably carried out with the slab weir plate 16 removed, and the slab weir plate 16 may be stretched to match the planar shape of the formwork device B after the bending deformation operation. In this case, the slab weir 16 is the slab beam 8
It may be simply placed on the slab beam 8, or it may be fixed to the slab beam 8. Since the side wall formwork 14 is formed thin as a whole and has a structure that is easily deformed elastically in its length direction, the above-mentioned deformation operation can be performed without any problem even if the side wall sheath plate 13 remains attached at all times. can be done.

The configuration for bending the formwork device B is not limited to the above-mentioned means, but can be changed as appropriate. For example, as shown in FIG. It may be placed at the same position as the pin 9, or it may be pivotally connected between the slab beam 8 and the connecting rod 10 at appropriate positions using pins 20, 20.
Further, the deforming means is not limited to the above-mentioned expansion and contraction device 18, but other means such as the one shown in FIG. Fix the adjusting device 22 screwed into
0 or by engaging the slab beam 8, this threaded rod 21
The intersecting angle of both 8 and 10 may be changed by the rotation of .

Then, the formwork device B is placed on the traveling trolley A as shown in the figure, and on the top surface of the traveling trolley A there is a
An adjusting tool 24 screwed onto a threaded rod 23 is provided.
Bring the end of the threaded rod 23 into contact with the side surface of the connecting rod 10,
By rotating the threaded rod 23 and moving it back and forth in the lateral direction, the formwork device B is moved in the lateral direction, and its placement position with respect to the traveling carriage A is adjusted.

Note that 25 is a lower formwork auxiliary material separately arranged on the floor surface 26, and the upper end surface of this material and the lower end surface of the side wall formwork 14 that abuts this material are inclined inward as shown in the figure. When the side wall formwork 14 is tilted inward, its lower end surface can be smoothly separated from the upper end surface of the lower formwork auxiliary material 25.

In order to construct, for example, a curved culvert using the moving internal formwork apparatus of the present invention having the above configuration,
Place the formwork device B on the traveling trolley A as shown in the figure,
Move along the rail 3 installed on the floor,
Fix it at the specified construction position. Next, by adjusting the lifting devices 5, 5, the formwork device B is moved through the traveling trolley A.
is set at a predetermined height, and the telescopic device 1
8 and 18 to change the intersecting angle between the slab beam 8 and the connecting rod 10 as shown in FIG.
The outer surfaces of the weir plates 13 and 13 of No. 4 and 14 are made to match the curvature of the structure to be constructed. When performing this operation, the slab weir plate 16 may be removed and placed or attached after the operation is completed. In addition, in this case, the side wall formwork 14, 14
The normal alignment is performed by operating the expansion and contraction devices 15, 15 and adjusting their tilting positions, and the movement of the entire formwork device B in the lateral direction is adjusted by using the threaded rod 23 of the adjustment tool 24. Rotate and do it. In addition,
When constructing a wall structure that does not require slab concrete, it is not necessary to place or attach the slab sheath plate 16.

In the construction of culverts and walls as shown in the figure, an outer formwork is required in addition to the inner formwork, but it is not possible to use the conventional hand-built formwork for this outer formwork. The application may be arbitrary, such as using a movable formwork or a large frame suspended by a crane.

Once the inner formwork apparatus and outer formwork of the present invention are set as described above, concrete 27 is poured. When the concrete 27 hardens, the expansion and contraction devices 15, 15 are retracted and the side wall formwork 14, as shown in FIG.
14 is pulled inward and tilted, and then the lifting devices 5, 5 are operated to lower the traveling trolley A, and the formwork device B is lowered accordingly.
The inner formwork device B will be removed from the mold and will be reduced in size as a whole. Then, the apparatus of the present invention is moved in its reduced state to the next construction site, and the above-mentioned operations are repeated to proceed with the construction. Note that if the curvature of the constructed structure at the next construction location is the same as that at the previous construction location, the expansion and contraction device 18
The formwork can be set by simply lifting and lowering the formwork device B and tilting the side wall formwork 14, excluding the bending operation.

FIGS. 7 and 8 show still other embodiments. In this embodiment, the entire formwork apparatus B is not placed on the traveling bogie A via the connecting rods 10, but the upper connecting girders 2, 2 of the traveling bogie A are constructed on the upper surface of the main frames 1, 1. Then, each slab beam 8,8 is placed directly on the connecting girder 2,2. Then, the slab beam 8 is placed near both ends of the lower surface of each slab beam 8, 8.
Adjustment devices 24 screwed together with screw rods 23 that can move forward and backward in the longitudinal direction are provided respectively, and both screw rods 2
By engaging the terminals of 3 and 23 with the outer surfaces of the connecting girders 2 and 2, and moving both screw rods 23 and 23 forward and backward, the slab beam 8 is moved laterally with respect to the connecting girder 2, and each slab beam The planar shape of the formwork device B is curved and deformed due to the difference in the amount of movement of the molds 8 and 8. It goes without saying that in this embodiment as well, the expansion and contraction device 18 or the adjustment device 22 in each of the above embodiments can be applied as a device for adjusting the intersecting angle between the slab beams 8, 8 and the connecting rods 10, 10. Nor.

As explained above, the present invention includes a traveling truck having a lifting device and a formwork device placed on the traveling truck, and this formwork device connects a plurality of slab beams to each other. Therefore, the intersection angle between the slab beam and the connecting rod can be adjusted freely, and the side wall formwork is provided at both ends of the slab beam so that the tilting can be adjusted freely, so that the formwork device can move easily. The trolley makes it easy to move, and the formwork can be removed, reduced, and shaped easily and quickly, significantly improving construction efficiency.Furthermore, the formwork device can be bent freely, so it can be used for culverts, etc. Even if the construction structure is curved in plan, the side wall sheathing plates can be freely adjusted to fit the shape, and the application range of large mobile formwork equipment with excellent workability. It has many excellent effects, such as significantly increasing the efficiency of construction and significantly reducing construction costs.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a plan view, Fig. 3 is a plan view showing the formwork device of the present invention in a curved state, and Fig. 4 is a tilting of the side wall formwork after construction. , a front view showing the demolded part, FIGS. 5 and 6 are plan views showing other embodiments of the mechanism for bending the formwork, and FIG. 7 is a front view showing still another embodiment. FIG. 8 is a plan view of the same. A... Traveling bogie, B... Formwork device, 1... Main frame body, 2... Connecting girder, 3... Rail, 4... Wheels,
5... Lifting device, 6... Traveling caster, 8... Slab beam, 10... Connecting rod, 11... Side wall vertical flap, 13...
...Side wall shedding plate, 14... Side wall formwork, 15... Expanding device, 16... Slab shedding board, 17... Slab formwork, 18... Expanding device, 25... Lower formwork auxiliary material, 26... Floor surface, 27... concrete.

Claims (1)

[Claims] 1. A traveling trolley having a lifting device, and a plurality of slab beams placed on the traveling trolley, which are movably connected in parallel to each other by a plurality of connecting rods at required intervals, and which are connected at both ends of the slab beams. The section comprises a formwork device in which the upper end of the side wall formwork is pivotally mounted in a tilt-adjustable manner, and the formwork device is equipped with a device for adjusting the intersecting angle between the slab beam and the connecting rod. Features: Mobile formwork equipment for culverts, etc.