JPH058214A - Concrete injection method for concrete column molding - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a concrete injection method capable of achieving molding of a high-quality concrete pillar. [Structure] In a concrete injection method using a concrete pump in which a mold 3 is placed on an injection carriage 2, a main mouth side concrete pump 4 is attached to a main mouth side 3a of the mold 3.
And, the main mouth side injection pipe 9 and the end mouth side concrete pump 7 and the end mouth side injection pipe 12 are arranged on the end mouth side 3b of the mold 3 respectively, and while moving the injection carriage 2, the main mouth side Injection tube 9
Then, the concrete 10 is injected into the mold 3 from each of the end opening side injection pipes 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for injecting concrete in molding a taper-shaped or not-tapered concrete columnar body such as a concrete pole.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional concrete injection state at the time of molding a concrete column. A mold 103 is placed on a self-propelled injection carriage 102 that can move on the rail 101, and the concrete pump 1 is attached to one end of the rail 101.
04 and its injection pipe 105 are stationary. As shown in FIG. 5, the end 103a of the mold 103 is connected to the tip 1 of the injection pipe 105.
05a, while the concrete mortar (hereinafter abbreviated as concrete) 107 in the hopper 106 is discharged from the tip portion 105a of the injection pipe 105 into the mold 103, the injection carriage 102 is moved to the concrete pump 104. With respect to the mold 103, a predetermined amount of the concrete 107 is sequentially injected from the end side 103a of the mold 103 to the base side 103b. Form 103 after this injection process
The inner concrete 107 is manufactured into a concrete pillar through a centrifugal compaction process, a curing process, a demolding process and the like which are not shown.

[0003]

A form 103 for a taper-shaped concrete column has a smaller inner diameter on the end opening side 103a than on the end opening side 103b, and is used for this. The injection pipe 105 has a considerably small diameter, especially at the tip portion 105a, and is required to have a length substantially equal to the entire length of the mold 103. In order to smoothly discharge the thin and long injection pipe 105 from the tip portion 105a into the mold 103 without clogging the concrete 107, it is usually necessary to use a concrete with a large slump. I don't get it. As a result, quality such as strength and durability of the concrete pillar is deteriorated, which is contrary to the recent tendency that further demands high compressive strength and high durability. In recent years, there has been an increasing demand for small-diameter columns to reduce the embedded space, but the smaller the column, the smaller the ratio of the former mouth diameter to the last mouth diameter of the formwork. As a result, the diameter of the injection pipe used for this purpose is also reduced, and the concrete with a low slump is more likely to be clogged, and the deterioration of the quality of the concrete column due to the increase in the slump is becoming a problem that cannot be ignored. The present invention is intended to solve the above-mentioned problems of the conventional concrete injection method in forming a taper-shaped or not-taper-shaped concrete column body, and is of high quality. It is intended to provide a method for injecting concrete, which can achieve the molding of a concrete column.

[0004]

In order to solve the above-mentioned problems, the present invention provides a concrete injection method by a concrete pump in which a mold 3 is placed on an injection carriage 2.
The former mouth side concrete pump 4 and the former mouth side injection pipe 9 are provided at the former mouth side 3a of the mold 3, and the last mouth side concrete pump 7 and the last mouth side injection pipe 12 are provided at the last mouth side 3b of the formwork 3, Place each,
While moving the injection trolley 2, the concrete 10 is inserted into the mold 3 from each of the former mouth side injection pipe 9 and the last mouth side injection pipe 12.
It is characterized by injecting.

The main mouth side concrete pump 4 and the main mouth side injection pipe 9 are stationary, and the end mouth side concrete pump 7 and the end mouth side injection pipe 12 are configured to move on the injection carriage 2.

Alternatively, the main mouth side concrete pump 4 and the main mouth side injection pipe 9 and the end mouth side concrete pump 7 and the end mouth side injection pipe 12 may be fixed.

[0007]

[Function] The main mouth side injection pipe 9 inserted into the mold 3 from the main mouth side 3a of the mold 3 and the end mouth side inserted into the mold 3 from the last mouth side 3b of the mold 3 Since the concrete 10 is injected into the mold 3 from each of the injection pipes 12, the tip portion 9a of the original mouth side injection pipe 9 does not need to reach the end mouth side 3b of the mold 3 and has a larger diameter than before. The length becomes shorter, and the small-diameter end-mouth side injection pipe 12 is in charge of the vicinity of the end-mouth side 3b of the mold 3 and an extremely short one is sufficient. As a result, even if the slump value is reduced, the concrete 10 is not clogged, the concrete 10 having a smaller slump than the conventional one can be used, and the quality improvement of the concrete pillar can be expected.

According to the construction in which the end-port side concrete pump 7 and the end-port side injection pipe 12 are moved on the injection cart 2,
When the injection carriage 2 is moved, the injection operation from the main-mouth side injection pipe 9 is performed, and at the same time, the end-mouth side injection pipe 12 is moved with respect to the injection carriage 2 so that the injection from the end-mouth side injection pipe 12 is performed. The injection operation is performed in parallel, and the injection process time is shortened.

In the case where both the main mouth side concrete pump 4 and the main mouth side injection pipe 9 and the end mouth side concrete pump 7 and the end mouth side injection pipe 12 are fixed, the moving speed of the injection carriage 2 is changed. By controlling each of the case of the main mouth side injection pipe 9 and the case of the end mouth side injection pipe 12, the moving equipment can be simplified by one injection carriage 2.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially longitudinal front view of the first embodiment of the present invention at the beginning of concrete injection, and FIG. 2 is a front view of the above embodiment at the end of concrete injection. Ray
The mold 3 is placed on a self-propelled injection trolley 2 that can move on the rail 1, and the rail 1 on the side of the end of the former side 3a of the mold 3
The front side concrete pump 4 is placed at one end of the. Injection cart 2 on the side of the end on the end side 3b of the mold 3
On the upper side, the end opening side rail 5 is arranged in parallel with the rail 1,
The self-propelled trailing-end injection truck 6 is placed on the trailing-end rail 5, and the trailing-side concrete pump 7 is attached to the trailing-end injection truck 6.
It is placed in.

Discharge port 8 of the original inlet side concrete pump 4
A taper taper-shaped inlet port injection pipe 9 is connected to. As shown in FIG. 1, when the injection carriage 2 is brought close to the original mouth side concrete pump 4, the tip portion 9a of the former mouth side injection pipe 9 is considerably from the last mouth side 3b of the mold 3 to the former mouth side 3a. The concrete 10 has a length shorter than the length of the mold 3 so that the concrete 10 is located near the position where the diameter of the tip 9a is larger than that of the end 3b of the mold 3. It is formed with a slightly large diameter so that it can be injected.

Discharge port 11 of the end-side concrete pump 7
The end mouth side injection pipe 12 is connected to the. As shown in FIG. 1, the end opening side injection pipe 12 has a front end 12a when the end opening side injection carriage 6 is brought close to the end opening side 3b of the mold 3.
It is formed to be short enough to reach a position considerably entering from the rear end side 3b to the front side 3a.

The source-side concrete pump 4 and the terminal-side concrete pump 7 are provided with the source-side inlet pipe 9 and the terminal outlet of the concrete 10 in each of the hoppers 13 and 14 at respective predetermined discharge amounts. Since the liquid is discharged from the side injection pipe 12, the injection trolley 2 and the end opening side injection are performed so that the injection amount into the mold 3 becomes proportional to the inner cross-sectional area of the mold 3 near the respective tip portions 9a and 12a. The moving speed of the carriage 6 is automatically controlled by the control panel 15.

Next, the operation of the above embodiment will be described. In the injection, as shown in FIG. 1, when the injection carriage 2 is brought close to the original mouth side concrete pump 4 and the mold 3 is fully inserted into the former mouth injection pipe 9, the tip portion 9a becomes the end mouth side of the mold 3. When the end of the injection pipe 12 is fully inserted from the end 3b into the mold 3 and the end-side injection carriage 6 is brought close to the end-side 3b of the mold 3, the tip end of the injection pipe 12 is fully inserted. When the portion 12a reaches a position where the end portion 3a of the mold 3 has entered the original opening side 3a, the tip portions 9a and 12a of both sides approach each other and face each other.
Therefore, the main mouth side concrete pump 4 and the last mouth side concrete
The pump 10 is operated so that the concrete 10 in each of the hoppers 13 and 14 is connected to the inlet port 9 and the inlet port 12 of the source port.
In addition, the control board 15 causes the injection carriage 2 and the end-portion-side injection carriage 6 to automatically run in the arrow direction. Tip portions 9a, 12 of the former mouth side injection pipe 9 and the last mouth side injection pipe 12, respectively
The moving speeds of the injection trolley 2 and the end opening side injection trolley 6 are automatically controlled by the control board 15 so as to be proportional to the inner cross-sectional area of the mold 3 near a, and a predetermined taper shape is obtained. The concrete 10 required for molding the concrete pillar is injected into the mold 3, and the injected concrete 10 is directed toward the original mouth side 3a and the end mouth side 3b in the mold 3. It is sequentially deposited. In the case of FIG. 2 in which the former mouth side injection pipe 9 and the last mouth side injection pipe 12 have come out from the former mouth side 3a and the last mouth side 3b of the form 3, respectively,
The concrete injection process ends.

As described above, the main opening side injection pipe 9 is inserted into the mold 3 from the main opening side 3a of the mold 3, and the end opening side 3b of the mold 3 is inserted into the mold 3. Since concrete is injected into the mold 3 from each of the end mouth side injection pipes 12, the tip portion 9a of the original mouth side injection pipe 9 does not have to reach the end mouth side 3b of the form frame 3. Therefore, the conventional single injection pipe 10
The tip end portion 12a of the injection pipe 9 on the side of the main mouth is larger in diameter than 5 and the length can be shorter than that of the conventional injection pipe 105. Further, the small-diameter end opening side injection pipe 12 is used for the end opening side 3 of the mold 3.
Since the injection in the vicinity of b is shared, it is extremely shorter than the conventional single injection pipe 105.

As a result, the concrete clogging of the main-mouth side injection pipe 9 and the last-mouth side injection pipe 12 is eliminated, and a concrete with a slump much smaller than the conventional one can be used and the concrete clogging occurs. It is particularly advantageous for a small-diameter concrete column that is easy to perform. The conventional single injection tube 1
As a result of having to use a concrete with a large slump, which is a problem of the injection method according to No. 05, the deterioration of quality such as strength and durability of the concrete column was solved by the above-mentioned examples. As a result, it is necessary to sufficiently meet the increasing demand for small-diameter columns to reduce the embedding space of concrete columns and the recent demand trend that further requires high compressive strength and high durability. You can Since the concrete injection operation into the mold 3 is performed in parallel from both the former mouth side injection pipe 9 and the last mouth side injection pipe 12, the injection process time is shorter than that of the conventional method.

According to such a concrete injection method, one concrete pillar can be molded into one having different properties, material strength, color, etc., for example, on the front opening side and the end opening side. Is. That is, a hopper 14 of the end-side concrete pump 7 is provided with a concrete material containing a high-strength material, for example, in the hopper 13 of the front-side concrete pump 4.
For example, a concrete material mixed with a synthetic resin material is put in each, so that a high-strength concrete portion is provided on the main opening side and a resin-reinforced concrete portion is provided on the end opening side. The provided concrete column can be easily molded.

FIG. 3 is a partial vertical sectional front view of the second embodiment of the present invention in the early stage of concrete injection, and FIG. 4 is a partial vertical sectional front view of the latter embodiment of the concrete injection. Each showed. In the second embodiment, the main mouth side concrete pump 4, the main mouth side injection pipe 9 and the end mouth side concrete are shown.
Both of the pump 7 and the end inlet side injection pipe 12 have a fixed structure, and the injection trolley 2 on which only the mold 3 is placed is self-propelled in the direction of the arrow in FIG. The mouth-side injection pipe 12 is configured to move relative to the mold 3, and the same configurations as those of the embodiment of FIG. 1 are denoted by the same reference numerals and the structural description thereof is omitted. When the original mouth side injection pipe 9 is performing concrete injection, at a speed proportional to the inner cross-sectional area of the mold 3 near the tip 9a of the original mouth side injection pipe 9,
Further, when the end mouth side injection pipe 12 is performing injection, the injection carriage 2 is moved at a speed proportional to the inner cross-sectional area of the mold 3 near the tip 12a of the end mouth side injection pipe 12. The control panel 15 automatically controls the moving speed of the injection cart 2.

In injection, as shown in FIG. 3, when the injection carriage 2 is brought close to the original mouth side concrete pump 4 and the mold 3 is fully inserted into the original mouth side injection pipe 9, the end mouth side injection pipe 12 becomes a mold. It is removed from the end opening side 3b of the frame 3. Then, the concrete pump 4 in the hopper 13 is activated by activating the front side concrete pump 4.
The mold 10 is discharged from the injection port 9 on the main opening side, and the injection trolley 2 is automatically run by the control board 15 in the direction of the arrow in FIG. 3 to form a concrete columnar body having a predetermined taper shape. The necessary concrete 10 is injected into the mold 3, and the injected concrete 10 is sequentially deposited toward the main opening side 3a. The front opening side injection pipe 9 is the front opening side 3 of the mold 3.
When it reaches the position shown in FIG.
The tip end portion 12a of No. 2 is to be seen near the end mouth side end portion 10a of the accumulated clot of the concrete 10 that has been injected into the mold 3. Then, the end-port side concrete pump 7 is operated to discharge the concrete 10 in the hopper 14 from the end-port side injection pipe 12, and the control board 15 automatically keeps the injection carriage 2 in the direction of the arrow in FIG. The concrete 10 required for molding a concrete columnar body having a predetermined taper shape is poured into the mold 3 by running, and the poured concrete 10 is directed toward the end opening side 3b. When the tip portion 12a of the end opening side injection pipe 12 is disengaged from the end opening side 3b of the mold 3, the concrete injection step ends.

Also in this second embodiment, (a) the tip end portion 9a of the injection port 9 on the front side of the injection pipe 105 is larger than that of the conventional injection pipe 105, and the length thereof is the same as that of the conventional injection pipe. Can be shorter than 105 and has a small diameter end injection tube 1
Since 2 shares the injection into the vicinity of the end opening side 3b of the mold 3, it is extremely shorter than the conventional single injection tube 105, and the original opening side injection tube 9 and the end opening side injection tube 12 are provided. The concrete clogging is eliminated, and a concrete with a significantly smaller slump can be used, and a concrete with a large slump, which is a problem of the conventional single injection tube 105 injection method, is used. As a result of unavoidable circumstances, it is solved that the quality such as strength and durability of the concrete columnar body is deteriorated. (b) One concrete pillar can be easily molded into one having different properties, material strengths, colors, etc., on the main opening side and the end opening side, respectively. It has the same characteristics as the first embodiment. Particularly, according to the second embodiment, the structure is such that any of the main mouth side concrete pump 4, the main mouth side injection pipe 9, and the end mouth side concrete pump 7 and the end mouth side injection pipe 12 are fixed. If the control program of the control panel 15 is configured so that the moving speed of the injection carriage 2 is controlled in each of the case of the main mouth side injection pipe 9 and the case of the end mouth side injection pipe 12,
There is an advantage that the desired function can be obtained by one injection cart 2 and a simple moving facility is sufficient.

[0021]

As described above, according to the present invention, the form 3
From the former mouth side injection pipe 9 inserted into the mold 3 from the former mouth side 3a, and the last mouth side injection pipe 12 inserted into the mold 3 from the last mouth side 3b of the mold 3 respectively. Concrete 1 in form 3
Since 0 is injected, it is not necessary for the tip portion 9a of the original mouth side injection pipe 9 to reach the end mouth side 3b of the form 3, and the diameter and diameter are shorter and the end mouth of the smaller diameter than before. The side injection pipe 12 is a mold 3
I am in charge of the area near the end opening side 3b, and an extremely short one is sufficient.
As a result, clogging of the concrete 10 of the main mouth side injection pipe 9 and the end mouth side injection pipe 12 is eliminated, and the concrete 10 having a smaller slump than the conventional one can be used.
It can be expected that the quality of the pillar will be improved.

By making the respective concrete materials injected from the main mouth side concrete pump 4 and the last mouth side concrete pump 7 different from each other in properties, material strength, color, etc. A concrete injection method having various excellent characteristics, such as easy formation of concrete pillars of different properties, material strength, colors, etc., on the original mouth side and the end mouth side, respectively. became.

According to the constitution in which the end-mouth side concrete pump 7 and the end-mouth side injection pipe 12 are moved on the injection carriage 2, the movement of the injection carriage 2 causes the injection operation from the main-mouth side injection pipe 9 to be performed. At the same time as it is done, the injection pipe 12 at the end opening side is made into the injection carriage 2.
The injection operation from the end opening side injection pipe 12 is performed in parallel by being moved with respect to, and the injection process time is shortened.

In the case where both the main mouth side concrete pump 4 and the main mouth side injection pipe 9 and the end mouth side concrete pump 7 and the end mouth side injection pipe 12 are fixed, the moving speed of the injection carriage 2 is changed. By controlling each of the case of the main mouth side injection pipe 9 and the case of the end mouth side injection pipe 12, only one injection carriage 2 is sufficient for the moving equipment, and the operation is simple and low cost.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view of a first embodiment of the present invention at the initial stage of concrete injection.

FIG. 2 is a front view of the embodiment of FIG. 1 at the end of concrete injection.

FIG. 3 is a partially longitudinal front view of the second embodiment of the present invention at the initial stage of concrete injection.

FIG. 4 is a partially longitudinal front view of the latter half of the concrete injection in the embodiment of FIG.

FIG. 5 is a partially longitudinal front view of a conventional example in the early stage of concrete injection.

[Explanation of symbols]

2 injection cart 3 formwork 3a Main mouth side 3b End side 4 Original mouth side concrete pump 7 End-side concrete pump 9 Main mouth side injection tube 10 concrete 12 End mouth injection tube

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takamoto Tani             Mie Prefecture Suzuka City Shonomachi 1900 No. Japan Conc             Reit Industry Co., Ltd. Suzuka Factory (72) Inventor Katsuzo Toyama             Mie Prefecture Suzuka City Shonomachi 1900 No. Japan Conc             Reit Industry Co., Ltd. Suzuka Factory

Claims (3)

[Claims] 1. A method of injecting a concrete by a concrete pump in which a mold is placed on an injection trolley, wherein a mold mouth side concrete pump and a mold mouth side injection pipe are provided on the mold mouth side. While arranging the end-port side concrete pump and the end-port side injection pipe on the end-portion side of the frame, respectively, while moving the injection cart,
A method for injecting concrete in concrete column molding, comprising injecting concrete into the mold from each of the former-mouth-side injection tube and the last-mouth-side injection tube. 2. The main mouth side concrete pump and the main mouth side injection pipe are fixed, and the end mouth side concrete pump and the end mouth side injection pipe are moved on the injection carriage. Item 2. A method for injecting a concrete in the concrete pillar molding according to Item 1. 3. The front-side concrete pump and the front-side injection pipe, and the end-side concrete pump and the end-side injection pipe are:
The method for injecting a concrete in a concrete pillar molding according to claim 1, wherein both are stationary.