JPS59109657A - Moving inner mold frame apparatus of tunnel or culvert - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a movable formwork apparatus used for tunnel lining or culvert construction.

Conventionally, in the construction of tunnel concrete linings and 6YH culvert concrete, mobile formwork equipment equipped with collapsible formwork on a trolley has been used to save labor and improve efficiency. However, all of the devices that have been used so far have had many drawbacks, such as complicated structures, large weights, and complicated operations. In addition, in order to reduce the weight of the equipment, equipment has been developed in which the formwork itself is equipped with a traveling device and the trolley is omitted.
This also has the drawback that, although the overall weight of the @ holder is reduced, it is cumbersome to operate, requires skill, and is inefficient.

The present invention aims to improve the above-mentioned drawbacks of conventional devices and provide a mobile formwork device for constructing tunnels or culverts that is simple in structure, lightweight, easy to operate, and has extremely high work efficiency. .

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

In FIGS. 1 and 2, 1 is the floor of tunnel A. On this floor, a pair of guide rails 2.2 are laid extending in the longitudinal direction of the tunnel. for,
Traveling casters 4, 4 supporting a pair of form bodies 3.3 which are divided into left and right parts are mounted via wheels 5, 5.

The form body 3 is formed to match the required inner surface shape of the lining for the tunnel.
are arranged at required intervals and connected by horizontal flaps (not shown), and a weir plate 7' (il-
It is constructed by erection. These pair of frame bodies 3, 3 are rotatably coupled together by pins 8 etc. near their tops.

The traveling caster 4 is provided with a supporting leg 10 having a wheel 5 on a pedestal 9, which can be raised and lowered by a lifting means 11 such as a hydraulic hydraulic type (screw type). It is attached to a load-bearing member of the formwork 3, for example, a vertical butterfly 6, so as to be able to approach and separate, via an X-shaped support 13 which is pivotally connected to each other at the center 12 and can be opened and closed. The lower end portions of the pair of support rods 13a and 13b of the support body 13 are pivotally connected to the pedestal 9 and the vertical butterfly 6 by pins 14 and 15, respectively, and the upper end portions of the pair of support rods 13a and 13b are connected to the vertical length provided on the pedestal 9. Hole 18 and vertical butterfly 6
A pin 16.1 is inserted into the long hole 19 in the vertical direction provided in the
7.

Between the intermediate portions of the pair of formwork bodies 3, 3, a cylindrical member 2o between the formwork bodies 3, 30 has both ends thereof pivoted to respective vertical butterflies 6, 6 by pins 21, 21, for example. The bridge is being constructed on the ground.

This spacing adjustment member 2o is provided with a telescoping mechanism 22, such as a turnbuckle type or an oil field type as shown in the figure, and by adjusting the telescoping mechanism, the distance between the pins 21 and 21 of the spacing adjustment member 2o changes, and both types The frames 3.degree. 3 are moved to open and close relative to each other around pins 8 at their tops, so that the distance between the two forms 3 and 30 can be adjusted.

Next, we will explain the construction procedure using the device of the present invention.
First, as shown in FIG. 1, the device is moved on guide rails 2.2 via wheels and fixed in a predetermined position. Then, the interval adjusting member 20 is expanded and contracted to position the formwork bodies 3, 3 in the transverse direction, and the elevating means 11.11
is operated to raise the formworks 3, 3 and set them to a predetermined height position. Once the formwork bodies 3, 3 are set in the predetermined positions, the auxiliary formwork 23, 23 is set at the lower end of the formwork bodies 3, 3, and the concrete B (see Fig. 2) is placed on the outside of the formwork bodies 3, 3. ).

After the concrete (concrete) B has hardened, the form body 3.3 is moved inward, demolded, further shrunk, and moved to the next construction position, as shown in Figure 2. , First, auxiliary formwork 2
3.23, then shorten the distance adjusting member 2o to draw both formworks 3. ll' to lower the pillars 9, 9, the formwork bodies 3.3 rotate around the pins 8, and the lower parts move inward, narrowing the gap and lowering the formwork. The entire frame body will be lowered, and the form bodies 3, 3 will be separated from the cast concrete 17-B and removed from the mold. Then, by further operating the elevation adjustment means 11 and the interval adjustment member 2o, the form body 3.3 is further lowered and drawn inward to contract and travel to the next construction position.

By repeating the steps described above, it is possible to proceed with the construction of a horizontally long tunnel or culvert.

As explained above, the movable formwork device of the present invention has a pair of formwork bodies rotatably connected to each other near their tops, each of which is provided with support legs equipped with wheels at each lower part of the inside of the formwork body, which can be adjusted up and down. The legs are attached so that they can be freely moved toward and away from the inside and outside through an X-shaped support that can be fully opened and closed, and an interval adjustment member between the two formwork bodies is installed between the middle parts of both formwork bodies. Adjustment of the height of the form body, movement control in the inside and outside directions ff1), peeling from the concrete, and demolding can be performed extremely easily by simply raising and lowering the support legs and expanding and contracting the spacing adjustment members.
It is extremely easy to shrink and move the entire formwork, no skilled workers are required, fewer workers are required, and labor-saving and high-performance construction can be achieved. Moreover, the structure is extremely simple and lightweight, and it can be manufactured at low cost, and has great advantages as a movable formwork for tunnels and culverts.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a state in which a device according to an embodiment of the present invention has been applied to tunnel construction and has been shaped, and FIG. 2 is a front view similarly showing a state in which the device has been removed from the mold. A...Tunnel B...Concrete...Floor surface 2...Guide rail 3...Form body
4... Traveling gear 5... ■ Wheels 6...
Vertical flap 7... Shelter plate 8... Connecting bin 9...
- Pillar 10... Support leg 11... Lifting means
13...X-shaped support 20... Spacing adjustment device 2
3...Auxiliary formwork patent applicant Okabe Co., Ltd. (and 1 other person)

Claims (1)

[Claims] At the bottom of each of the inner sides of a pair of formwork bodies that are connected to each other in a rotatable manner near the top, there is an X-shaped support that can be freely opened and closed. A movable interior for tunnels or culverts, characterized in that it is attached so as to be able to move toward and away from the inside and outside through the body, and an interval adjustment member for both formwork bodies is installed between the middle parts of both side frame bodies. Current frame equipment.