JPH083168B2 - Concrete Distributor for Concrete Placing of Concrete Dam - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a concrete distributing device in concrete placing of a concrete dam such as a erosion control dam having a relatively small scale. [Prior Art] When constructing a conventional dam. , Various methods are known for transporting concrete. One of them is the so-called bucket placing method, in which a lifting machine with a transfer wire is installed at the position where a dam is to be installed, and the wire is used to guide a bucket filled with concrete, and concrete is placed at a specified position. Is intended to fall. This method is suitable for relatively large dams, and concrete is stepped into blocks. However, if such a method is applied to a small-scale dam, an expensive lifting machine is required and the equipment becomes oversized. On the other hand, a pipe rotating type distributor is also known for distributing concrete within a block by transporting it using a concrete pump, but this method also requires a relatively expensive distributor and limits the range of concrete pouring. Will end up.

[Problems to be Solved by the Invention] Accordingly, the present invention is directed to the concrete pouring of a concrete dam in which a concrete pouring range can be arbitrarily set without providing expensive equipment such as a lifting machine and a pipe rotary distributor. It is made for the purpose of providing a concrete distributor.

[Means for Solving the Problem] Therefore, according to the present invention, a center post that is erected substantially in the center of a block in which concrete is to be placed in a concrete dam and a rotatably supported on the center post. A revolving frame, a belt conveyor slidably mounted on the revolving frame, and a pressure-feeding pipe that is provided above the belt conveyor and that is provided on the top of a pillar that is erected on the revolving frame and that reaches a concrete pump. Provided is a concrete dispensing device in concrete placing of a concrete dam with a supporting swivel pipe cradle.

[Operation] Concrete sent from the concrete pump is introduced into the belt conveyor on the revolving frame supported by the center post standing upright in the block via the pressure-feeding pipe, revolving the revolving frame and moving the belt conveyor. By sliding the concrete, the concrete is continuously placed at a predetermined pouring position without interruption.

When each block of the concrete dam is constructed from the lower side and reaches a certain height, the swing frame and the belt conveyor are separated by the joint of the center pole, and the blocks are moved to another block and placed.

Further, the concrete sent from the concrete pump is put into the belt conveyor, but since it is supported by the swivel pipe pedestal, it is not restricted by the turning of the turning frame and the sliding of the belt conveyor, and the continuous concrete Easy pumping and distribution.

If the concrete dams have different casting heights (lift heights), change the height of the center post.

In addition, if the concrete dam is long, this is dealt with by lengthening the swivel and the belt conveyor.

Furthermore, it is also possible to cast outside the block (concrete on the fret part of the concrete dam).

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a plan view and a partial side view showing an overall arrangement of equipment for carrying out the present invention,
Now, when constructing a concrete dam D, the kneaded concrete is transported by a truck mixer T, and is thrown into a concrete pump C installed near the dam D, and the concrete pump C feeds a pressure feed pipe P ₁ . Sent.

This pressure-feeding pipe P ₁ is piped from the center in the longitudinal direction of the casting block of the dam D to a swivel-type pipe pedestal 11 which will be described later.

3 and 4 are a plan view and a front view of the distributor M, and the concrete sent by the pressure feed pipe P ₁ is sent to the slide conveyor 3 from its tip. The slide conveyor 3 is movably supported in the longitudinal directions D ₁ and D ₂ of the revolving frame 2, and has a chute 9 at one end thereof. The revolving frame 2 is supported on a revolving pedestal 4 fixed to a center post 1 by a joint 7 so as to be revolvable in both directions S ₁ and S ₂ . Therefore, the slide conveyor 3 is capable of pouring concrete at an arbitrary position of the pouring block b.

In FIG. 5, the swivel frame 2 has a pair of beams 2
a, 2b are provided and a scaffolding 1 is provided outside these beams 2a, 2b
0 and 10 are provided, and two rollers R ₁ and R are provided inside.
_Two are provided. Then, these rollers R ₁ and R ₂ are
It is in contact with a column RP standing upright on the center post 1. Also, there are two beams below the beams 2a and 2b.
Rotating rollers R ₃ and R ₄ are provided, and rails 5 and 5 for guiding the four wheels 6 provided on the frame C ₁ of the belt conveyor C are laid on the upper part thereof. In addition, reference numerals U1 and U2 in the figure are rollers provided on the swivel base 4 for preventing the swivel frame 2 from rising.

6 and 7, columns P ₂ and P ₂ are erected on the scaffolds 10 and 10 via joints F and F, and external fixing rings are provided on the tops of the columns P ₂ and P _2. O is fixed above the belt conveyor 3.

A chute H is suspended from the external fixing ring O,
Four bearings B ₁ and B ₂ are provided in the upper and lower parts of the inner part, respectively. An inner rotating ring I is rotatably supported on the bearings B ₁ and B ₂ . The internal rotation ring I supports the pressure-feeding pipe P ₁ , and its tip end faces the chute H. Therefore, even when the turning frame 2 is turned, the pressure-feeding pipe P ₁ passes through the internal rotation ring I. Concrete can be put into the chute H without rotating.

When constructing the dam D, as shown in FIG. 8, concrete is pumped by a concrete pump C by a pumping pipe P ₁ , charged into a distributor M from an end PE ₁ and swiveling a swivel frame 2 and a slide conveyor 3 The concrete is moved and placed in a predetermined plane of the dam D, and the placed concrete is compacted with a vibrator or the like. Then, when the driving work from the level L ₁ to the level L ₂ is completed, the center post 1 is added and extended upward, the distributor M is installed above, and the pressure feeding pipe is installed.
The end PE ₁ of P ₁ is moved up to the position PE ₂ and concrete is poured to level L 3 in the same manner as described above.

A scaffold B supporting the pressure feed pipe P ₁ is provided outside the dam D, the scaffold B is sequentially extended upward in accordance with the placing work, the pressure feed pipe PM is added, and the end PE ₁ is moved to the position PE ₂ . .

EFFECT OF THE INVENTION Since the present invention is configured as described above,
By using a relatively inexpensive conveyor and a swivel base, the concrete that has been pressure-fed can be continuously placed, which is suitable for constructing a relatively small-scale erosion control dam.

In particular, in the present invention, since the concrete is conveyed by pumping with a pressure-feeding pipe, when the pouring level of the concrete rises, it is sufficient to simply add the pressure-feeding pipes, which can be carried out at a lower cost than with conveyer conveyance.

In addition, the concrete sent from the concrete pump is put into the belt conveyor, but since the pressure feed pipe is supported by the swivel pipe pedestal, it is not restricted by the turning of the turning frame and the sliding of the belt conveyor, and it is continuous. The concrete can be easily pumped and distributed.

[Brief description of drawings]

1 and 2 are a plan view and a partial side view showing an overall layout when the present invention is implemented, and FIGS. 3 and 4 are a plan view and a front view showing a distributor, and FIG. 6 is a side sectional view showing a swivel frame, FIG. 6 is a side view showing a swivel type pipe pedestal, FIG. 7 is an enlarged view showing an essential part of FIG. 6, and FIG. 8 is a side view for explaining a mode of dam construction. It is a figure. C: concrete pump, D: concrete dam,
M ...... dispensing machine, P ₁ ...... pumping tube, 1 ...... center post,
2 …… Swivel frame, 3 …… Slide conveyor, 11 ……
Swivel pipe pedestal

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazumi Sakurai 2-19-1, Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Matsuo Watanabe 1 Fukkamachi, Aoba-ku, Sendai-shi, Miyagi Prefecture No. 27 Kashima Construction Co., Ltd. Tohoku Branch (72) Inventor Koji Itaya 4-51 Otamachi, Naka-ku, Yokohama-shi, Kanagawa Kashima Construction Co., Ltd. Yokohama Branch (72) Akira Kambara Ota, Naka-ku, Yokohama-shi, Kanagawa 4-51, Machi Kashima Construction Co., Ltd., Yokohama Branch (72) Inventor, Isamu Takahashi 4-51, Ota-cho, Naka-ku, Yokohama, Kanagawa Prefecture Kashima Construction Co., Ltd., Yokohama Branch (56) Reference JP-A-61-130561 ( JP, A)

Claims (1)

[Claims] 1. A center post erected substantially in the center of a block for placing concrete in a concrete dam, a revolving frame rotatably supported on the center post, and slidable on the revolving frame. And a swivel pipe pedestal that is provided on the top of a column that is erected on the swivel frame and that is located above the belt conveyor and that supports a pressure-feeding pipe to a concrete pump. A concrete distributor for concrete placing of a concrete dam.