JPH0728308Y2 - Concrete press fitting hardware - Google Patents

Description

[Detailed Description of the Invention] << Industrial field of application >> The present invention fills a precast concrete pillar member in the shape of a hollow cylinder by injecting fresh concrete upward into the interior through an injection port formed in the lower part of the pillar member. For concrete press-fitting hardware for

<< Prior Art >> A diversion-type simple check valve 17 as shown in FIG. 6 has been conventionally used for injection of mortar or chemicals. However, this conversion type simple check valve 17 is a rotary blade in which the shaft 19 is bridged over the hole 18.
Since 20 is a constituent element, it has a large resistance to press-fitting the fresh concrete from the hose 15 and is not suitable, and there is a problem that post-treatment is complicated such as economical efficiency and removal of solidified concrete after use. Many.

Therefore, the applicant for this utility model registration is considering a concrete press fitting metal fitting as shown in FIGS. 7 and 8.

As shown in the figure, the concrete press-fitting metal fitting 1 is attached to a hole 6 formed in the lower portion of a hollow precast concrete pillar member 5, the mouthpiece 3 of a hose 15 is fitted into the hole 6, and the washer 4 is attached to a bolt 16 thereof. And a nut 9, and a comb-shaped shutter 22 is provided slidably provided between the mouthpiece 3 and the hole 6 to prevent backflow of the fresh concrete 21 after pouring. It is a thing.

<< Problems to be solved by the invention >> However, since the concrete press-fitting metal fitting 1 can be removed from the pillar member 5 only after the ready-mixed concrete 21 is solidified, the concrete press-fitting hardware 1 can be quickly inserted into another hollow precast concrete pillar member 5. Not only is it not possible to divert it, but since the fresh concrete has solidified around the comb-shaped shutter 22, it is necessary to remove the solidified concrete that has been solidified before it is diverted, and the removal and cleaning work is complicated. Met.

The present invention was devised to solve the above-mentioned problems of the prior art, and a new concrete press-fitting metal fitting that can be easily and quickly diverted and has high economical efficiency and easy post-treatment is provided. The purpose is to provide.

<< Means for Solving the Problem >> In order to achieve the above object, in the present invention, fresh concrete is press-fitted upward from an injection port formed in the lower portion of a hollow cylindrical precast concrete column member. In a concrete press-fitting metal part for filling, a mouthpiece member detachably attached to the column member, to which a fresh concrete pouring means is connected for guiding the raw concrete to the pouring port, and a detachable attachment to the column member. A plate-like member that is slidably supported by the mouthpiece member and has an opening portion that opens the inlet in the sliding direction and a flat plate portion that closes the inlet and that opens and closes the inlet by changing the mounting position. A shutter and a fixing means for fixing the plate-like shutter to the pillar member are provided.

<< Operation >> In the above configuration, when the fresh concrete is filled, the shutter is fixed to the hollow precast concrete pillar member by the fixing means so that the opening of the shutter coincides with the pouring port, and the mouthpiece member is also attached. In such a state, fresh concrete is pressure-fed from the pouring means connected to the mouthpiece member, and is poured and filled into the hollow precast concrete column member. Thereafter, when the filling of the fresh concrete is completed, the fixing means is released and the shutter is slid, and the flat plate portion is fixed again by the fixing means with the injection port closed. Subsequently, by removing only the attachment of the mouthpiece member and leaving the shutter on the pillar member, the mouthpiece member and the injection means connected thereto can be diverted to another hollow precast concrete pillar member.

<< Embodiment >> A preferred embodiment of the present invention will be described below in detail with reference to the drawings. It should be noted that the same reference numerals are used for the components common to the conventional ones.

FIG. 1 is a front view of a lower portion of a hollow precast concrete column member to which the concrete press-fitting metal fitting of the present invention is attached, and FIG. 2 is a perspective view of the concrete press-fitting metal fitting when assembled with fresh concrete.

The present invention is basically a concrete press fitting hardware 30 for press-fitting and filling raw concrete upward from an injection port 6 formed in the lower part of a hollow cylindrical precast concrete column member 5. A mouthpiece member 4 which is detachably attached to the pillar member 5 and to which a fresh concrete pouring means 15 is connected to guide the raw concrete to the pouring port 6, and a detachable attachment to the pillar member 5 and slide on the mouthpiece member 4. A plate-shaped shutter 2 that is freely supported and has an opening 7 that opens the inlet 6 in the sliding direction and a flat plate portion 8 that closes the inlet 7 and that opens and closes the inlet 6 by changing the mounting position. Consists of

As shown in the figure, the concrete press-fitting hardware 30 is mainly composed of a shutter 2 and a mouthpiece member 4, and is attached to the lower part of a hollow precast concrete pillar member 5.

Specifically, the shutter 2 has a width sufficient to open and close an injection port 6 for filling fresh concrete that is opened at the bottom of the hollow precast concrete pillar member 5, and an opening portion that opens the injection port 6. 7 and a flat plate portion 8 for closing the filling port 6 are provided in a vertical shape, and two female screw holes 9 formed above and below the filling port 6 are formed above and below the flat plate portion 8. Two screw insertion holes 10 are formed at an interval equal to the interval. In the present embodiment, the female screw hole 9, the screw insertion hole 10 and the screw 16 described later constitute a fixing means. Further, a stopper 11 projecting toward the front is formed at the upper edge of the shutter 2.

On the other hand, specifically, the base member 4 has a lateral rectangular shape, and a fitting guide groove for guiding the shutter 2 up and down is provided on the back surface side thereof.
12 is formed, and two screw insertion holes 13 are formed on both sides thereof at an interval equal to the interval of the two female screw holes 9 formed on the left and right of the injection port 6.

An end of a hose 15, which is a concrete pouring means for pumping fresh concrete by a joint 14, is connected to the mouthpiece member 4. 16 is a shutter 2 and a base member 4
Is a screw for fastening the hollow precast concrete pillar member 5.

Although the number of the female screw holes 9 is provided at four positions on the upper, lower, left and right sides, the position and the number may be four or more.

Next, the concrete press-fitting hardware constructed as described above
The action of 30 will be explained.

When the raw concrete press-fitting metal fitting 30 is attached to the hollow precast concrete pillar member 5, first, both sides of the mouthpiece member 4 are brought into contact with the lower wall surface of the pillar member 5, and the left and right screw insertion holes 13 are inserted into the left and right sides of the inlet 6. Align with each female screw hole 9 and fasten with a screw 16.

Then, insert the shutter 2 from above the fitting guide groove 12,
The screw insertion hole 10 on the lower side is aligned with the female screw hole 9 on the upper side of the injection port 6, and as shown in FIG. 2, the shutter 2 is fixed by a screw 16 in a state of being positioned above. Even if the screw 16 is not completely screwed into the female screw hole 9, the head protruding toward the front may be engaged with the upper edge of the mouthpiece member 4, so that the shutter 2 can be positioned. There is.

At this time, as shown in FIG. 3, the opening 7 of the shutter 2 and the injection port 6 of the hollow precast concrete pillar member 5 are aligned with each other, and the fresh concrete pressure-feeding hose 15 and the pillar member 5 are
Since it communicates with the inside of, the raw concrete is poured and filled in this state.

After the filling of the ready-mixed concrete into the inside, the screw 16 is removed, and the mounting position of the shutter 2 at the upper position is changed to the lower position.

At this time, the shutter 2 is prevented from coming out downward by the stopper 11 projecting toward the front at the upper end edge thereof engaging with the upper edge of the mouthpiece member 4. Further, the upper and lower screw insertion holes 10 of the shutter 2 are aligned with the upper and lower female screw holes 9 of the injection port 6 of the pillar member 5, and the screws 16 are screwed and fastened (fourth).
Figure).

At this time, the injection port 6 is closed by the flat plate portion 8 of the shutter 2, and the reverse flow of the fresh concrete is blocked. Therefore, by removing the screws 16 on both sides of the mouthpiece member 4, the mouthpiece member 4, the hose 15, etc. can be immediately diverted to another hollow precast concrete pillar member 5. For this diversion, the shutter 2 has to be prepared separately, but since the structure is simple, it can be diverted at low cost.

According to the modified embodiment of the shutter 2 shown in FIG.
Because one opening 7 is provided with two upper and lower flat plate portions 8,
After pouring fresh concrete into one hollow precast concrete pillar member 5 and completing the filling, after closing the injection port 6 of the pillar member 5 in one flat plate portion 8 of this shutter 2, the shutter 2 is placed at the position of the broken line A. The shutter 2 is divided into two, and the divided shutter 2 is used for another hollow precast concrete pillar member 5
Can be diverted to open and close the injection port 6. That is, in this case, the opening 7 of the shutter 2 is used twice.

<< Effect of Device >> As described above, according to the present invention, the following excellent effects are exhibited.

A shutter having a flat plate portion and an opening for opening and closing an inlet for pouring fresh concrete is fixed to a hollow precast concrete column member independently of a mouthpiece member to which the concrete pouring means is connected by a fixing means. Since it is possible, while completely blocking the backflow of the fresh concrete filled with the shutter, the mouthpiece member is immediately removed immediately after the filling of the fresh concrete, and it is quickly diverted for work on other hollow precast concrete column members. It is possible and economical.

The shutter is plate-shaped, has a simple structure, and can be manufactured at low cost.

Also, the base member can be removed immediately after the injection is completed,
It can be easily cleaned by washing and the like, and the concrete removing work from the shutter that is removed after solidification is simple because it is flat, and convenient for storage and reuse.

[Brief description of drawings]

FIG. 1 is a bottom front view of a hollow precast concrete column member equipped with the concrete press-fitting hardware of the present invention, and FIG.
The figure is a perspective view of a state where the concrete press-fitting part is assembled when pouring fresh concrete, FIG. 3 is an explanatory view of a state where the injection port and the shutter opening are aligned, and FIG. 4 is a shutter where the injection port and the die member are shutters. FIG. 5 is an explanatory view of a state in which it is closed by a flat plate portion, FIG. 5 is a front view of a modified embodiment of the shutter, FIG. 6 is a perspective view of a conventional diversion type simple check valve, and FIG. 7 is a conventional concrete press fitting metal fitting. Fig. 8 is a side view of the detached state of Fig. 8, and Fig. 8 is a sectional view taken along the line VIII-VIII in Fig. 7. 2 ... Shutter 4 ... Die member 5 ... Hollow precast concrete column member 6 ... Injection port 7 ... Opening part 8 ... Flat plate part 15 ... Fresh concrete injection means (hose)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Application Laid-Open No. 64-62555 (JP, A) Japanese Patent Application No. 57-135160 (Japanese Utility Model Application No. 59-38348) A microfilm (JP, U) of which the contents of the description and drawings attached to the application for Japanese Patent Application No. 54-77565 (Japanese Utility Model Publication No. 55-176943) were photographed (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A concrete press-fitting metal part for press-fitting and filling raw concrete upward from an injection port formed in the lower part of a hollow cylindrical precast concrete column member, to and from the column member. A mouthpiece member that is freely attached and to which fresh concrete pouring means is connected to guide the raw concrete into the pouring port, and a pillar member that is detachably attached and is slidably supported by the mouthpiece member, in the sliding direction. A plate-like shutter having an opening for opening the inlet and a flat plate portion for closing the inlet to open and close the inlet by changing the mounting position, and the plate-like shutter is fixed to the pillar member. A concrete press-fitting metal fitting, comprising a fixing means.