JPH0890539A - Apparatus and method for manufacturing thin precast concrete form - Google Patents

Abstract

PURPOSE: To stereoscopically manufacture a thin concrete plate by rotatably installing a cylindrical tube between vertical pieces arranged in a pair of base frames arranged in the support frame of a thin precast concrete form, standing vertical frames at both the ends of the base frame, and arranging a rectangular frame in the vertical frame. CONSTITUTION: A form B is inserted to the support frame C of the form B, and the cylindrical tube 7 of a form bottom is rotatably engaged between vertical partition pieces 9 arranged in a pair of base frame pieces 8 of the frame C. The form B can be rotated with the tube 7 between the adjacent partition pieces 19 as a central axis, and the form B is supported with the oblique angle held at the central axis of the bottom as a center to the form C arranged in the vertical frames 11 stood at both ends of the pieces 8. Reinforcing bars 13 are arranged in the space between the forms B, and concrete 14 is placed from the upper space between the forms B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for manufacturing a thin precast concrete formwork (hereinafter referred to as a PC formwork).

[0002]

2. Description of the Related Art Conventionally, plywood and steel molds have been generally used as molds used for constructing concrete buildings. However, the use of plywood formwork tends to be suppressed as much as possible from the viewpoint of resource conservation, and it is desired to develop a formwork to replace it. Currently, large-sized thin concrete plates are mainly used for wall and floor formwork. The half-PC formwork having the outer shape of the member shape is used as the pillar / beam type.

In the former thin concrete board,
It is manufactured by dividing it into a size that can be roughly transported by truck or a size that can be used for a required part on site.
At this time, reinforcing reinforcing bars are arranged to secure the strength and rigidity of the plate, and part of it is exposed on the surface. Therefore, reinforcing bars are arranged on the horizontal bed (steel surface plate) and concrete is It is placed, and after the concrete is set, it is cured and demolded to be stocked.

The latter, which uses a thin-walled semi-PC board as the form of the pillars and beams, is spread on each side of the outer shell of the pillars and beams, and concrete is laid flat on a horizontal bed to cure it. Waiting, after demolding, the method is to assemble according to the pillar / beam-shaped outer shell.

[0005]

As in the latter case, thin-walled concrete boards are produced flat on a horizontal bed, so many horizontal beds are needed to secure the production requirement for Nissan. Since it has to be set, it requires a fairly large production yard and it is difficult to secure a production yard.

In addition, there is a problem that a considerable transportation cost is required for manufacturing at a factory and transporting to the site. The present invention has been proposed in view of the above problems of the prior art, and an object thereof is an apparatus for manufacturing a thin-walled PC form that allows a plurality of thin-walled PC forms to be easily manufactured at a site where the same is used. And a point of providing a manufacturing method.

[0007]

In order to achieve the above object, a thin-walled PC form making apparatus according to the present invention has an upper surface in which vertical pieces are erected on both sides and bottom of a thin-walled precast concrete form piece. In the lower bottom edge of the open bed, a mold body in which a cylindrical pipe body is arranged, and a vertical partition in which the cylindrical pipe body in the mold body is rotatably fitted are arranged. A vertical frame is provided upright at both ends of the pair of base frame pieces, and a vertical frame is provided in each vertical frame.

According to the second aspect of the present invention, a plurality of the mold bodies are inserted into the rectangular frame of the support frame of the mold body so as to maintain a required inclination angle, and the respective mold bodies are the same. The tip cylindrical tubular body of is rotatably fitted between the partitions, and the reinforcing steel bars are laid on the bed of each of the above-mentioned molds to cast concrete, and the cast concrete has the required strength. Then, the concrete plate is removed from the bed of the mold body while rotating and tilting the mold body through the bottom circular tubular body.

[0009]

As described above, the apparatus for manufacturing a thin-walled PC mold according to the present invention has a wide groove-shaped frame whose upper surface is open by vertically arranging vertical pieces on both sides and bottom of the thin-walled PC mold. A vertical frame having a cylindrical tubular body mounted on the lower bottom edge of the bed is inserted into a support frame of the frame, and a pair of base frame pieces in the support frame are arranged vertically. The cylindrical tubular body at the bottom of the mold frame is rotatably fitted between them so that the cylindrical body can rotate about a circular tubular tube between adjacent partitions as a central axis. The thin-walled PC formwork is supported by the support frames arranged in the vertical frames that are erected at both ends of the piece so that the formwork body is supported while maintaining an inclination angle around the center axis of the bottom side. Is manufactured three-dimensionally, the area of the manufacturing yard can be minimized, and it can be manufactured at the construction site.

According to the second aspect of the present invention, as described above, the reinforcing frames are arranged on the thin-walled PC formwork in the plurality of formwork units installed so as to maintain the inclination angle on the support frame of the formwork body. Then, concrete is poured from the upper opening of the wide groove formwork main body, and when the cast concrete develops the required strength, multiple formwork units installed so as to maintain the inclination angle face each other. Manufacturing a thin-walled PC mold by turning around the cylindrical tubular body between the partitions toward the upper frame on the side of the mold and removing the concrete plate from the mold bed while moving sequentially. Is.

[0011]

The present invention will be described below with reference to the illustrated embodiments. FIG. 1 shows a thin-walled PC form A, which is molded to a desired size, and is composed of a concrete plate 2 with a thickness of about 30 mm in which reinforcing reinforcing bars 1 made of wire mesh reinforcing bars are arranged, and concrete is mortar and bean gravel. May be kneaded, or may be molded only with mortar. Further, the concrete plate 2 is provided with a hole 3 through which the separator required for the formwork is formed, and the hole 3 is also used as a locking portion of the lifting metal fitting during demolding or lifting.

Reference numeral B denotes a form body, which is vertical pieces 5 and 6 on both sides and the bottom of the bed 4 which is thin and has a desired size.
Are erected, and the upper surface is opened to form a wide groove-shaped cross section. Further, a cylindrical tube body 7 is arranged along the bottom edge of the bed 4. 3 and 4 show a supporting frame C of the formwork, in which a plurality of vertical partitions 9 are arranged in a row on a pair of parallel horizontal base frames 8 and a connecting member 10 is provided between the outer ends of both base frames 8.
Are connected. Further, a vertical frame 11 is erected at both ends of the base frame 8 in contact with the inside of the connecting member 10, and a rectangular rectangular frame 12 is arranged on the inner circumference of the upper portion of the vertical frame 11.

Then, the supporting frame C of the formwork body is installed in a yard in the construction site, then the formwork body B is inserted into the rectangular frame 12, and the cylindrical tube body at the lower end portion of the formwork body B is inserted. The mold body B is held at a constant inclination angle so that 7 are fitted between the adjacent vertical partitions 9, and the reinforcing bar 13 is arranged in the space between the mold bodies B (see FIG. 3). Then, the concrete 14 is poured from the upper space between the mold bodies B. Reference numeral 15 denotes the concrete pouring hose.

Next, as shown in FIG. 6, when the casting concrete 14 is removed from the mold B, the concrete 14 is removed from the outermost mold B'after the casting concrete 14 develops a predetermined strength. A hanging hook 1 that is shaped and passed through a sling wire 16 through a hole 3 in a concrete plate 2 and is suspended from a lifting machine.
7 and move it to a stockyard (not shown) for stocking, and tilt the form B'into the square frame 12 in the opposite direction,
The next concrete board 2 is removed from the mold, and the above-described work is repeated in order to remove the concrete board 2. When the demolding of the concrete plate 2 is completed, the form body B is returned to the original inclination angle and leaned against the rectangular frame 12.

As shown in FIG. 5, the tilting of the mold body B is such that the cylindrical tubular body 7 of the mold body B is rotatably supported by the vertical partitions 9 arranged in line on the upper surface of the base frame 8. Therefore, the cylindrical tubular body 7 is constrained by the vertical partition 9 and manually rotated to the opposite side, and the mold body B is easily tilted.

[0016]

According to the present invention, as described above, the thin P
Vertical pieces were erected on both sides and bottom of the C-shaped frame piece,
A cylindrical tubular body is arranged on the lower bottom edge of the bed whose upper surface is open, and the cylindrical tubular body is arranged between the vertical pieces arranged in line on the pair of base frames arranged on the supporting frame of the formwork. It is possible to three-dimensionally manufacture thin-walled concrete plates by rotatably mounting, vertically arranging vertical frames at both ends of the same double base frame, and arranging square frames within the same vertical frame. Yes, and by installing it in the production yard inside the construction site, you can use the thin-walled PC inside the construction site.
Plates are manufactured and stocked to improve workability.

According to the second aspect of the present invention, the plurality of the mold bodies are inserted into the rectangular frame of the support frame of the mold body at a required inclination angle, and the tip end of each mold body is cylindrical. A circular tubular body is rotatably fitted between the vertical partition pieces, and reinforcing steel bars are laid on the beds of the respective formwork bodies to pour concrete, and the pour concrete expresses the required strength. After that,
Since the concrete board is demolded from the bed of the formwork body while rotating and tilting the formwork body through the tubular cylindrical body at the bottom, a plurality of concrete boards are continuously manufactured and demolded. After that, I moved to the stockyard and stocked,
This device simultaneously manufactures the required amount of PC formwork, moves it to the stockyard after demolding and stocks it, supplies the required amount of thin-walled PC formwork, and saves transportation costs by manufacturing at the site.

By using this thin-walled PC form as a form for forming pillars and beams, the thin-walled PC form is directly formed as it is with the pillar and beam concrete slab concrete, which saves time and labor for dismantling the formwork and facilitates post-construction. The workability is improved and the construction period is shortened.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of a thin PC mold is cut away.

FIG. 2 is a perspective view of a mold body for producing a thin PC mold.

FIG. 3 is a partially longitudinal side view showing a state in which the mold frame is installed on the support frame of the mold frame.

FIG. 4 is a plan view of a support frame of the mold body.

FIG. 5 is an enlarged cross-sectional view of a main part in which a mold frame is installed on a support frame of the mold frame.

FIG. 6 is a side view illustrating a demolding process of the concrete for pouring the formwork.

[Explanation of symbols]

 A Thin-walled PC form B, B ′ Form C Support frame for form 1 Reinforcement bar 2 Concrete plate 3 Hole 4 Bed 5 Vertical piece 6 Vertical piece 7 Cylindrical tube 8 Base frame 9 Vertical section 10 Connecting material 11 Vertical Frame 12 Square Frame 13 Reinforcing Reinforcing Bar 14 Concrete 15 Concrete Placing Hose 16 Sliding Wire 17 Hanging Hook

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Sako 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd.

Claims (2)

[Claims] 1. A mold body in which a cylindrical tube is arranged at the lower bottom edge of a bed whose upper surface is open, in which vertical pieces are erected on both sides and bottom of a thin precast concrete mold piece, respectively. A vertical frame is erected at both ends of a pair of base frame pieces in which vertical partitions are rotatably fitted in the same frame body, and a rectangular shape is formed in each vertical frame. An apparatus for manufacturing a thin-walled precast concrete formwork, comprising a support frame of a formwork body provided with a frame. 2. A plurality of the mold bodies are inserted into a rectangular frame of a support frame of the mold body so as to maintain a required inclination angle, and a cylindrical tip end of each of the mold bodies is inserted. After being rotatably fitted between the partitions, concrete was placed by placing reinforcing reinforcing bars on the beds of the molds, and the cast concrete exhibited the required strength, and then the mold A method for manufacturing a thin-walled precast concrete formwork, characterized in that the concrete plate is demolded from the bed of the formwork body while rotating and tilting the frame body via the bottom circular tubular body.