JPH0241626B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a movable outer formwork device used in the construction of arch culverts.

In order to improve efficiency and save labor in constructing horizontally long concrete structures such as culverts and retaining walls, in recent years mobile type structures have been used, in which large-scale formwork is moved and used repeatedly. Frame construction methods have come into use, and the method of moving the formwork by supporting it on a trolley is becoming mainstream.

However, when applying this traveling type to the outer formwork of an arch culvert, the formwork has a large-scale structure and is particularly large and heavy; Supporting and moving the formwork, various adjustments such as shaping and demolding the formwork,
In order to operate smoothly and reliably, the carts used to move the formwork must be strong and large, and
There are many problems, such as the operation mechanism of the formwork being complicated, making it difficult to handle, and requiring a large space to set up the traveling cart.

The present invention was made in order to solve the problems in the above-mentioned traveling type movable outer formwork device for arch culverts. The structure is simple and lightweight, and the structure is simple and lightweight, and the formwork can be shaped easily. It is an object of the present invention to provide a movable outer formwork device for arch culverts that allows operations such as adjustment and demolding to be performed reliably and easily, and has good work efficiency.

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

In the figure, reference numeral 1 denotes a formwork body, which consists of arch-shaped batten materials 2 arranged in parallel at required intervals, connected by horizontal battens (not shown), and a weir plate 3 attached to the inside of the batten materials 2. ing. Further, as shown in the figure, the formwork body 1 is divided into two parts at the top of the formwork body 1a and 1b as needed, and the formwork bodies 1a and 1b are rotated in the direction of the arrow by a pin 4 at the top end of the formwork body 1. It is also possible to have a structure in which they are freely connected.

Reference numeral 5 denotes a traveling leg vehicle disposed at the lower part of both outside sides of the form body 1, in which a supporting leg 7 equipped with wheels 6 can be freely adjusted up and down by a lifting mechanism 9 such as a hydraulic type or a screw type on a pedestal 8. It has a set configuration. This running caster 5 is attached to the outside of the formwork 1 via an X-shaped support 10 which is pivotally connected to each other at the center and can be freely opened and closed, so that it can be attached to and detached from a load-bearing material such as a butterfly material 2. has been done. That is, the pair of support rods 10 of the X-shaped support 10
The lower end portions of the supports 10a and 10b are pivotally connected to the pillar 8 and the butterfly material 2 by pins 11 and 12, respectively, and the upper end portions of the support rods 10a and 10b are respectively provided to the pillar 8 and the butterfly material 2. The vertical holes 13 and 14 are engaged with pins 15 and 16, respectively. A means is provided between the traveling caster 5 and the form body 1 to freely adjust the distance between them.

Various methods are conceivable as this contact/separation adjustment means, but as an example, as shown in FIGS. Both ends are connected by pins 18 and 19. As another example, as shown in FIG.
It is also possible to extend the side that is pivotally connected to the pins 11 and 15 outward from the pins 11 and 15, and to attach the telescopic adjustment member 17 to the end thereof by pivotally connecting the ends 20 and 21.

The traveling casters 5 are mounted at the front and rear of the formwork 1 and other appropriate positions.

Next, construction procedures using the apparatus of the present invention will be explained. Prior to construction by the apparatus of the present invention, the cloth foundation 22 of the culvert is constructed to a predetermined height, and the rails 23 are laid along the outside thereof. Then, the device of the present invention is placed on the rails 23 via the wheels 6, moved, and fixed at a predetermined construction position. In this case, the lifting mechanism 9 of the traveling caster 5 is operated to raise the pedestal 8 so that the lower end of the form body 1 does not touch the ground 24.

To position the form body 1 in the transverse direction,
The distance between the form body 1 and the traveling caster 5 may be moved toward or away from each other by operating the telescopic adjustment member 17. Further, positioning of the form body 1 in the height direction can be performed by operating the elevating mechanism 9 of the traveling caster vehicle 5 and adjusting the height position of the pedestal 8 up and down. After positioning, the pedestal 25 is inserted under the formwork 1 to stabilize the formwork 1.

In contrast to the setting of the outer formwork body, the inner formwork 26
(Indicated by chain lines in FIG. 1) is also set, but this inner mold 26 is not particularly limited, and conventionally known devices may be employed as appropriate. Concrete 27 is then placed between the inner and outer molds.

After the concrete 27 has hardened, the formwork body 1 is removed from the mold. To do this, the telescopic adjustment member 17 is shortened to draw the lower part of the formwork body 1 outward, that is, toward the traveling vehicle 5 side, and the formwork body 1 is removed from the formwork. At the same time as the lower part of the mold body 1 is peeled off, the lifting mechanism 9 is operated to move the entire mold body 1 up and down, and the upper part of the mold body 1 is peeled off. This allows the form body 1 to be removed from the concrete 26 smoothly.

The form body 1 after demolding is further moved to the concrete 27 by operating the expansion/contraction adjustment member 17 and the elevation adjustment mechanism 9.
The robot is sufficiently separated from the robot and moved to the next construction position, and the above-mentioned operations are repeated to proceed with the construction.

As explained above, the present invention has an X-shaped structure that can be freely opened and closed, and has support legs equipped with running wheels that can be adjusted up and down at the bottom of both outer sides of a form body that is formed in an arch shape. Since it is attached so that it can be moved toward and away from the support member, it is possible to stably support and move the formwork that makes up the large area, as well as adjust the height of the formwork, adjust its movement in the transverse direction, and control the movement of concrete. Peeling from the mold and demolding are extremely simple, just by raising and lowering the supporting legs and expanding and contracting the telescopic adjustment member.
It can be carried out reliably, the work can be done efficiently and labor-savingly, and it has an extremely simple structure, is lightweight, and can be manufactured at low cost, and has many excellent effects as an external formwork for arch culverts. .

[Brief explanation of the drawing]

Fig. 1 is a front view showing the molded state of the device according to an embodiment of the present invention, Fig. 2 is a front view showing the same demolded state, and Fig. 3 is the connection between the form body and the traveling caster. FIG. 7 is a front view showing another embodiment of the separation adjustment mechanism. 1...Formwork body, 2...Butter material, 3...Weir board,
5... Traveling gear, 6... Wheels, 7... Support legs, 8...
... Pillar, 9 ... Elevation adjustment mechanism, 10 ...
……concrete.

Claims (1)

[Claims] 1 A pair of running casters, each of which has supporting legs equipped with running wheels on the pillars that can be adjusted up and down, are placed at the bottom of both outer sides of an arch-shaped formwork body with a weir plate attached to the inside. One end of both support rods of an X-shaped support formed by pivotally connecting the center portions of the support rods to each other is pivotally connected to the form body and the traveling caster, and the other ends of the two support rods are are pivotally connected to the formwork body and the traveling castor vehicle so as to be vertically slidable, respectively, and further, the formwork body and the traveling castor vehicle are connected by a telescopic adjustment member,
Movable external formwork device for arch culverts.