JPH0525938A - Automatic concrete placing method and device - Google Patents

Abstract

PURPOSE:To automate concrete placing and to secure flatness. CONSTITUTION:A concrete supply pipe 2 is provided over an area where a concrete 1 is to be placed so that it covers the area. Discharge ports 3 are provided at this concrete supply pipe 2 with a predetermined interval, a valve 4 is provided at the discharge port 3 and a sensor 5 is provided for detecting whether the height of the concrete 1 discharged from this discharge port 3 is a predetermined value or not. The valve 4 is opened/closed by a signal form this sensor 5 so as to equalize the height of the concrete 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for automatically pouring concrete.

[0002]

2. Description of the Related Art Generally, as a concrete pouring method, concrete is supplied by a hose and the concrete is poured into a predetermined position while moving the hose.

Then, in order to obtain the levelness of the concrete surface, it is manually corrected while inspecting with a level.

[0004]

However, in the above-mentioned prior art, there is no problem when the area where the concrete is to be placed is small, but when the large area is to be placed, the concrete distribution work itself is required. Not only does it require a large number of personnel, but it is difficult to work to obtain the levelness.

The present invention has been made in view of the above matters, and it is a technical object to provide an automatic concrete pouring method and apparatus capable of automating the distribution of concrete and also ensuring the flatness. And

[0006]

The present invention has the following methods in order to solve the above technical problems. That is, a concrete supply pipe is installed above the area so as to cover the area where the concrete should be poured, and the concrete is discharged from a large number of discharge ports formed in this concrete supply pipe,
By detecting whether or not the height of the concrete at each discharge port is at a predetermined value, the amount of concrete discharged from the discharge port is controlled to make the height of the concrete uniform.

In order to solve the above technical problems,
The configuration is as follows. A concrete supply pipe is installed above this area so as to cover the area where concrete should be placed, and discharge ports are provided at predetermined intervals in this concrete supply pipe, and valves are provided at the discharge port, in the vicinity of the discharge port. A sensor for detecting whether or not the height of the concrete discharged from the discharge port is at a predetermined value is provided, and the valve is opened / closed by a signal from the sensor so that the height of the concrete is made uniform. .

[0008]

When the concrete is discharged from the discharge ports provided at the predetermined intervals in the concrete supply pipe, the concrete surface gradually rises.

Here, the height of the concrete surface varies depending on the location, but when the height of the concrete reaches a predetermined position by the sensor, the valve for supplying the concrete is closed. Then the concrete has an open valve,
That is, the concrete is supplied mainly to a portion where the height is not sufficient, and the height of each portion of the concrete, that is, the horizontality is secured.

[0010]

Embodiments of the present invention will be described with reference to FIGS. A concrete supply pipe 2 is installed above the area where the concrete 1 is to be placed. A plurality of the concrete supply pipes 2 are arranged at a predetermined interval, and one ends of the concrete supply pipes 2 are connected to a concrete supply device (not shown). The concrete supply pipe 2 is provided with discharge ports 3 at predetermined intervals. The distance between the discharge ports 3 varies depending on the viscosity of the concrete and the thickness to be cast, but the discharge ports 3 are so close to each other that no recesses are formed in the concrete.

A valve 4 is provided inside the discharge port 3. The valve 4 is controlled to be opened and closed by an electromagnetic plunger (not shown), and the electromagnetic plunger is operated by a command from the control device 10.

An air plunger or a servomotor may be used as the valve 4. A sensor 5 for detecting whether or not the height of the concrete 1 discharged from the discharge port 3 has reached a predetermined value is provided near the discharge port 3. This sensor 5 detects whether or not the upper surface of concrete is in contact with the electrodes by suspending two electrodes and detecting the electric resistance between the electrodes.

In the above embodiment, the valve 4 is operated in response to a command from the controller 10,
The valve 4 may be directly controlled by amplifying the output from the sensor 5 by an independent circuit. Further, as the sensor 5, a temperature sensor, an infrared sensor or an ultrasonic sensor can be used.

When a temperature sensor is used, the temperature difference between the outside air and concrete is detected. That is,
When the thermistor is hung down from the discharge port 3 and the concrete top surface comes into contact therewith, the temperature fluctuates. Therefore, this is detected and the valve 4 is closed.

When an infrared sensor is used, a light output / input device for detecting the intensity of the reflected light reflected on the concrete surface is provided, and the valve 4 is turned on when the reflected light reaches a preset level. Close it.

When an ultrasonic sensor is used, a sound wave output / input device for detecting the reflection time of the sound wave and the phase of the output sound wave and the reflected sound wave to detect the distance from the sensor to the concrete upper surface is provided. The valve 4 is closed when the sound pressure reaches a preset level.

An operation example will be described below. When the concrete 1 is discharged from the discharge ports provided in the concrete supply pipe 2 at predetermined intervals, the concrete surface gradually rises.

Here, although the concrete surface height varies depending on the place, when the height of the concrete 1 reaches a predetermined position by the sensor 5, the concrete supply valve 4 is closed. Then, the concrete 1 is mainly supplied to the open valve 4, that is, the portion where the height is not sufficient, and the height of the concrete 1 is leveled.
When actually operated, as the discharge port 3 closer to the concrete supply device discharges more concrete,
The valve 4 was sequentially closed from the discharge port 3 close to the concrete supply device, and as a result, a flat concrete surface could be obtained. As described above, when the concrete height reaches the specified value, the concrete supply is automatically stopped and the concrete is supplied at a constant density to the pouring area in a low state, so that the smoothness is finally obtained. It can be a concrete surface. This method was most suitable for concrete that does not require compaction.

FIG. 5 shows another embodiment, in which a float is used as the sensor 5. That is, the float 5a is provided at the tip of the arm 5b connected to the valve 4, and when the float 5a is lifted by the concrete 1, the valve 4 closes the discharge port 3 and stops the outflow of the concrete 1. .

In this embodiment, the wiring of the electric system, the control device, etc. are not required, so that the structure can be greatly simplified and the invention can be easily applied to a vast placing area. The rest of the configuration and operation are the same as in the above-mentioned embodiment, and will be omitted.

[0021]

According to the present invention, the amount of concrete discharged from the discharge port is controlled by detecting whether or not the height of the concrete at each discharge port is at a predetermined value. The pouring can be automated and the distribution of concrete can be made uniform to ensure the flatness.

[Brief description of drawings]

FIG. 1 is a side view of an operation process showing an embodiment of the present invention.

FIG. 2 is a side view of an operation process showing an embodiment of the present invention.

FIG. 3 is a side view of an operation process showing an embodiment of the present invention.

FIG. 4 is a side view of an essential part showing an embodiment of the present invention.

FIG. 5 is a side view of an essential part showing another embodiment of the present invention.

[Explanation of symbols]

1 concrete, 2 concrete supply pipe, 3 outlets, 4 valves, 5 sensors,

Claims (2)

[Claims] 1. A concrete supply pipe is installed above this area so as to cover the area where concrete should be placed,
Concrete is discharged from a large number of discharge ports formed in this concrete supply pipe, the amount of concrete discharged from the discharge port is controlled by detecting whether the height of the concrete at each discharge port is at a predetermined value, or concrete is discharged. A method for automatically placing concrete, characterized by making the height of the walls uniform. 2. A concrete supply pipe is installed above the area so as to cover an area where concrete should be poured, and the concrete supply pipe is provided with discharge ports at predetermined intervals, and a valve is provided at the discharge port to discharge the concrete. Provided near the outlet is a sensor that detects whether the height of the concrete discharged from this outlet is at a predetermined value or not.The signal from this sensor opens and closes the valve to equalize the height of the concrete. An automatic concrete pouring device characterized by being configured as follows.