JPH0644992Y2 - Automatic demolding of long concrete members with irregularities on the upper and lower surfaces - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a formwork for producing a long concrete member having unevenness on the upper and lower surfaces of the formwork, such as a precast concrete corrugated sheet pile.

[Conventional technology]

Formwork for manufacturing long concrete members having unevenness on the upper and lower surfaces, such as conventional precast concrete corrugated sheet piles, has an assembly formwork with a lower surface that matches the uneven shape, and uses a bolt nut, cotter, or the like. It was of the type assembled using. Such a formwork was constructed by placing concrete, curing it, and then disassembling and removing it.

With such a formwork, it takes time to assemble and disassemble,
There was a problem of low work efficiency.

Further, in a formwork having a flat bottom face and a horizontal top face, such as a flat plate-like slab or an I-shaped girder, there is disclosed a formwork in which only the side plates are linearly moved or rotated to assemble and disassemble in one operation (for example, actual opening). 60-105112). However, there has not been a conventional formwork such as a concrete corrugated sheet pile having unevenness on the upper and lower surfaces, which can easily remove the upper and lower formwork.

[Problems to be solved by the device]

In consideration of the above situation, as a result of various efforts made by the present inventor, as a mold for a long concrete product having unevenness on the upper and lower surfaces, a mold that is easy to assemble, demold, disassemble, and take out the product and has high workability. I came to develop the frame. The present invention aims to provide such a new form.

[Means for Solving the Problems]

The present invention is configured by combining the following means. That is, a bed having a pair of guide bases on both sides in the width direction, an inward spring-back mounting plate is hung on both edges in the width direction, and the mounting plate is fitted and inserted between the pair of guide bases. A lower surface form having an uneven surface, a fixture that locks to the mounting plate of this lower surface form and pulls each to the width direction surface side to fix it to the guide base, linear movement or turning sideways A side mold attached to the side of the guide base or the bed, an upper mold attached to the bed so as to be rotatable sideways, and actuators that linearly move or rotate the side mold and the upper mold, respectively. It is an automatic demolding frame for a concrete long member having irregularities.

[Action]

INDUSTRIAL APPLICABILITY The formwork of the present invention is an automatic demolding form intended for a formwork used for manufacturing a concrete elongate member having irregularities on an upper surface, a side surface and a lower surface, for example, a concrete sheet pile. For this reason,
The upper, lower and side molds were easily assembled and disassembled. The concave formwork on the lower surface should be contracted by springback, then expanded to be attached to the guide base. The top and bottom concave and convex sides are
It is equipped with an actuator that is linearly moved or turned according to its shape, and is automatically detached.

The lower surface form was designed so that both edges in the width direction were fitted between a pair of guide bases provided on the bed. The bottom formwork should have a mounting plate that springs back inside, and when the formwork is assembled, pull the springback side plate of this bottom formwork from the side of the guide base with a fixture to fix it, and release it when releasing from the mold. By using the elastic force of the mounting plate that springs back, it can be easily demolded and disassembled, which makes mounting and disassembling extremely easy.

Since the side formwork is configured to be laterally movable or rollable to the side and the top formwork is configured to be rollable and equipped with an actuator, it is possible to automatically operate a long formwork in one operation, It was labor-saving.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a plan view of a formwork according to an embodiment of the present invention.
An arrow view and an arrow B view are shown in (b), and a CC arrow view is shown in (c).

(1) Bed (see FIG. 2) The bed 1 of the embodiment has a length of 12.0 m and a width of 1.2 m, and the structure is such that a plate 2 having an upper surface of 12 mm is attached, and a pair of guide bases 3,
As No. 3, two H-shaped steels were arranged on both sides along the longitudinal direction. A space between the lower bottom frame 11 and the air pipe 4 was taken in a horizontal direction, and a side frame, a bed frame for opening and closing the top frame, and a separable vibrator 6 were attached to the lower surface.

(2) Lower surface form (see FIG. 3) The lower surface form 11 has irregularities that match the back surface of the product and can be replaced according to the product. It is also possible to use the PC version of flat sheet pile without unevenness. The lower surface mold has a mounting plate 12 that springs back, and is a structure that can be attached and detached from the outside of the guide base 3 by a blinding operation close to one touch by a fixture 13 that pulls the springing back mounting plate 12.

(3) Side Frame The side frame 21 horizontally moves from the assembly position shown by the solid line in FIG. 4 (a) to the position 21a shown by the broken line, and then turns as shown in FIG. 4 (b). For this reason, the support bracket 23 is provided with a long pin hole 24 so that the mold can be moved horizontally. When assembling, it is sufficient to assemble in the reverse order of the above, and the actuator 22 operates.

The unit length of the side frame is about 6.0 m, and it is operated by the actuator 22, but the joint part every 6 m is set in the longitudinal direction so that one line of the long form frame (for example, 70 m) can be opened and closed at once. By providing rattling of about 5 mm, the entire line can be opened and closed at the same time, and even if the air cylinder (actuator 22) has a non-uniform speed at the time of opening and closing, it can open and close without any problem.

As mentioned above, the side frame has a structure in which it rolls after pulling out 30 mm to 40 mm in the horizontal direction (horizontal direction) in consideration of the shape of the side part of the product, but depending on the shape of the side part of the product, horizontal movement is omitted. It may be a structure.

(4) Top form (see FIGS. 5 and 6) The top form 31 is pin-coupled to the bracket 32 attached to the bed 1, and is pivoted sideways while being lifted slightly upward with this pin as the center. This turning is performed by the actuator 33.

In the embodiment shown in FIG. 5, actuators for operating the upper surface form are provided on both sides of the form of the long concrete product. (The figure shows only the left side). In the embodiment shown in FIG. 6, the left and right upper surface molds 31a are coupled by a coupling material 31b, and one actuator (not shown) rotates together to one side (left side in the figure). In this case, since no formwork or actuator is arranged on the right side of FIG. 6, there is an advantage that this space can be freely used as a working side.

The top mold has a length of about 6.0 m so that one long line 70 m can be turned at once, and the bending and twisting process of the joint is similar to that of the side frame structure.

Of course, the upper mold can be exchanged for each type of product, and a product surface having an arbitrary shape can be formed.

Two actuators 33 were placed at 6.0 m. In the embodiment shown in FIG. 5, only turning is performed, and as shown in FIG.
I only tried to open it.

[Effect of device]

According to the present invention, a long concrete member having unevenness on the upper and lower surfaces such as a concrete sheet pile can be easily and automatically produced efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a part of a mold of an embodiment of the present invention, (a) a plan view, (b) a sectional view taken along arrows A and B, and (c) a sectional view taken along arrow C. Fig. 2 is a sectional view of the bed, Fig. 3 is a sectional view showing the attachment of the lower mold, and Fig. 4 is a side mold (a) when mounted.
(B) Sectional view showing the retracted state, and FIG. 5 is (a) of the upper formwork.
FIG. 6 is a cross-sectional view showing the time of mounting and (b) retreat, and FIG. 6 is an explanatory view showing the operation of another embodiment of the upper surface formwork. 1 ... Bed 3 ... Guide base 11 ... Bottom form 12 ... Spring back mounting plate 13 ... Fixing 21 ... Side form 22 ... Actuator 31 ... Top form 33 ... Actuator 40 ... Concrete product

Claims (1)

[Scope of utility model registration request] 1. A pair of guide bases (3, 3) on both sides in the width direction.
(1) having a bed and a mounting plate (12) that springs back inwardly hangs down on both edges in the width direction, and the mounting plate (12)
Is fitted between the guide bases (3, 3) and is locked to a lower surface mold (11) having an uneven surface on the mold surface and a mounting plate (12) of the lower surface mold (11). And the guide base (3, 3) for pulling each side of the guide in the width direction to fix the guide base (3, 3) to the guide base (3, 3).
3) Side formwork (21) attached to the side or bed (1)
And an upper surface formwork (31) attached to the bed (1) so as to be able to rotate sideways, and an actuator (22) () for linearly moving or rotating the side formwork (21) and the upper surface formwork (31), respectively. 33) and an automatic demolding frame for a concrete long member (40) having unevenness on the upper and lower surfaces.