JPH11270136A - Cft construction concrete filling-up controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CFT construction concrete filling controller capable of observing in detail the interior of a steel column and the condition of filled concrete with a small-sized light weighted camera unit. SOLUTION: A camera unit 2 having a CCD photographing device 22, a lighting system 23 and an infrared distance sensor 24 accommodated in a cover 21 are lifted and lowered inside a steel column 100 by an elevating device 3 and the state of things inside the steel column 100 photographed with the CCD photographing device 22 is projected on a TV monitor 7. At this time, the distance between the camera unit 2 and the filled concrete 104 inside the steel column 100 is indicated on a display 81 in response to the output from the infrared distance sensor 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for checking before filling concrete inside a steel frame having a CFT structure and grasping and managing the state of filling concrete.

[0002]

2. Description of the Related Art When constructing a column having a CFT structure, it is necessary to check the inside of a steel frame before filling concrete,
Conventionally, to check the state of concrete filling in the steel frame, the operator has to look directly into the steel frame from above, or use a commercially available video camera with a penlight or floodlight fixed inside the steel frame. And a method of observing the inside of a steel frame based on an image from a video camera.

[0003]

However, it is actually impossible for an operator to look directly from above and grasp the situation of the lower part in the steel frame directly and visually, and it is necessary to sufficiently manage the filling of concrete. Could not. On the other hand, in the case of using a commercially available video camera equipped with a lighting device such as a penlight to perform internal observation, the penlight lacks illuminance and it is impossible to clearly identify the inside of the steel frame. Therefore, it is necessary to mount a projector having a sufficient light amount for observation inside the steel frame.

[0004] However, such a floodlight causes an increase in size, and a situation may arise in which the video camera and the floodlight cannot pass through the pressure inlet of the steel pillar or the hole of the diaphragm in the steel pillar.

[0005] Even if the video camera and the projector can pass through the pressure inlet and the aperture of the diaphragm, the increased weight requires a corresponding winding device. In other words, the power cable cannot be used as a hanging wire, and a separate hanging wire is required, so that labor and time are required for moving and changing the wire.

Further, in a configuration in which a projector is simply attached to a video camera, even if the video camera can be put into a steel column, the camera or the like is inadvertently immersed in concrete during observation during filling of concrete, and its function is stopped. There is also the danger that it will be lost.

An object of the present invention is to provide a concrete filling management device having a CFT structure capable of solving the above-mentioned problems in the prior art.

[0008]

According to the present invention, there is provided a concrete filling management device having a CFT structure, in which a CCD image pickup device and a lighting device are housed in a cover. There is proposed a device comprising a camera unit inserted therein for taking a picture of the inside of the steel column, and an image monitor device for taking a picture of the inside of the steel column captured by the CCD image pickup device.

[0009] The CCD imaging device can be miniaturized,
The camera unit can be reduced in size and weight. It is preferable to use an infrared distance sensor as the distance sensor in terms of miniaturization and weight reduction. Illumination light is emitted from the opening of the cover by an illumination device, and the inside of the steel column can be imaged by a CCD imaging device using the illumination light. CC
Since the camera unit is configured by using the D imaging device, the dimensions and shape of the cover can be determined so that the cover can be inserted into the inside of the steel column through, for example, the press-in port of the steel column and can pass through the hole of the diaphragm inside the steel frame. The lighting device can be configured to use a light emitting diode or a halogen bulb. When the camera unit is placed in a steel column, the illumination device illuminates the field of view of the CCD
The state inside the steel column can be photographed by the imaging device.

In the present invention, a distance sensor is housed in the camera unit, and a display device for displaying the distance between the camera unit and the concrete filled in the steel column in response to the output from the distance sensor is provided. It can also be. According to this configuration, since the distance sensor measures the distance between the CCD imager and the filled concrete,
The result can be displayed on a display device, and the elevation of the camera unit can be adjusted by the elevation device based on the display.

According to the present invention, the distance sensor is housed in the camera unit, and when the distance between the camera unit and the concrete filled in the steel column becomes smaller than a predetermined value in response to the output from the distance sensor. It is also possible to adopt a configuration in which an alarm device for outputting an alarm is provided. According to this configuration, when the distance between the camera unit and the concrete filled in the steel column becomes equal to or less than a predetermined value, an alarm output is issued from the alarm device, so that it is easy to immerse the camera unit in the filled concrete. Can be prevented.
The alarm output from the alarm device can be a buzzer, a lamp, or the like.

According to the present invention, in the above configuration, the CCD
The electric cables of the imaging device, the lighting device, and the distance sensor may be drawn out of the cover to be used for hanging the cover. Since the camera unit can be configured to be small and lightweight, there is no need to separately prepare a hanging wire, and an electric cable can be used.

Further, according to the present invention, in the above configuration,
The filling speed of the filling concrete may be measured based on the output signal from the distance sensor, and the measurement result may be displayed on a display device.

Further, according to the present invention, in the above configuration,
The cable for suspending the camera unit is marked in advance to indicate the distance from the camera unit,
It is also possible to configure so that the position of the camera unit can be known by the marking.

Further, according to the present invention, in the above configuration,
The elevation device may be configured to operate to raise the camera unit in response to the output of the distance sensor in response to the movement of the top of the filled concrete. According to this configuration, it is possible to automatically record the movement of the top of the cast concrete.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a configuration diagram showing an example of an embodiment of a concrete filling management device according to the present invention. The concrete filling management device 1 checks the inside of the steel column 100 before filling the concrete into the steel column 100 having the CFT structure, and also manages the concrete filling at the time of filling the concrete into the steel column 100. And a camera unit 2 for photographing the situation inside the steel column 100.

The camera unit 2 passes through the press-in port 101 of the steel column 100 and the hole 103 of the diaphragm 102 in the steel column 100 and enters the lower portion thereof to photograph the internal state of the steel column 100 and the state of the filled concrete 104. In such a case, an ultra-small CCD imaging device is housed in a small cylindrical case.

The configuration of the camera unit 2 will be described with reference to FIGS. The camera unit 2 includes a bell-shaped cover 21 in which a microminiature CCD imaging device 22, an illuminating device 23 using a high-brightness light emitting diode, and an infrared distance sensor 24 are housed. In the present embodiment,
A panel 26 is provided in the opening 21A of the cover 21. The CCD imaging device 22, the lighting device 23, and the infrared distance sensor 24 are fixed to the panel 26, respectively. In the cover 21, a known appropriate cushioning material 25 is packed between the CCD imaging device 22, the lighting device 23, and the infrared distance sensor 24, whereby the camera unit 2 collides with the steel column 100 by mistake. In this case, it is possible to effectively prevent the camera unit 2 from being damaged.

The CCD imaging device 22 is mounted on the panel 2 so that the lens portion 22A of the CCD imaging device 22 is exposed from the panel 26 so that the opening direction of the cover 21 can be imaged.
6 attached. The illumination direction of the illumination device 23 and the distance measurement direction of the infrared distance sensor 24 are also attached to the panel 26 so as to match the imaging direction of the CCD imaging device 22.

The electric cables C1, C2 and C3 respectively coming out of the CCD image pickup device 22, the lighting device 23 and the infrared distance sensor 24 are drawn out from a small-diameter opening 21B provided at the rear end of the cover 21. . Code 27
Is a sealing member for sealing the opening 21B, which can prevent moisture, dust and the like from entering the cover 21 from the opening 21B.

Here, the camera unit 2 is a very small C
Since it is configured to be small and light using the CD imaging device 22, the electric cables C1, C2, and C3 pulled out from the cover 21 are bundled and used as hanging wires.

Returning to FIG. 1, the camera unit 2 constructed as described above is suspended in the steel column 100 by using the suspending wire 28 formed by bundling the electric cables C1, C2 and C3. In order to be able to move the camera unit 2 up and down, a lifting device 3 is provided,
The suspension wire 28 is connected to the lifting device 3.

In FIG. 1, a pulley 1 is provided in a steel column 100.
05 is provided in advance, and the suspension wire 28 is connected to the pulley 1
05 is connected to the lifting device 3. Lifting device 3
Is connected to the control box 4, the operation of the control box 4 controls the operation of the elevating device 3, and the elevating control of the camera unit 2 can be performed. The steel column 10
The elevation control of the camera unit 2 within 0 may be performed manually by an operator.

The control box 4 supplies driving power to the elevating device 3 and also controls the CC in the camera unit 2.
The D imaging device 22, the lighting device 23, and the infrared distance sensor 24 are supplied with power required for their operation.

Reference numeral 5 denotes a branch box, which branches out a video output signal of the CCD image pickup device 22 from the control box 4 and takes out the video output signal. The taken out video output signal is sent to a television monitor 7 via a camera amplifier 6, where the CCD output is sent. Imaging device 2
2 displays an image taken.

Therefore, the user operates the control box 4 to lower the camera unit 2 by the elevating device 3, and
00 and the state of the filled concrete 104 can be projected on the television monitor 7 and observed.

The measuring device 8 has a function of receiving a signal from the infrared distance sensor 24 and displaying the distance measured by the infrared distance sensor 24 on the display 81. The measuring device 8 also fixes the position of the camera unit 2 at a predetermined height by the elevating device 3, sends a signal from the infrared distance sensor 24 provided in the camera unit 2 to the measuring device 8, Top 10 of camera unit 2 and filled concrete 104 by distance sensor 24
4A from the temporal change of the measured distance to the top 104A
, Ie, the filling speed of the filled concrete 104 into the steel column 100 or the amount of rise of the filled concrete 104 can be measured and displayed.

Therefore, the measuring device 8 can easily know not only the distance measurement result obtained by the infrared distance sensor 24 but also the position of the top end 104A of the filled concrete 104, that is, the amount of rise of the filled concrete or its rising speed.

As described above, the distance between the camera unit 2 and the top end 104A of the concrete filling 104 is measured by the measuring device 8, and the measurement result is displayed on the display 81. The operator can control the elevating device 3 by the control box 4 so that the camera unit 2 is not immersed in the filled concrete 104 during the operation.

In addition, in response to a signal from the infrared distance sensor 24 in the camera unit 2, the suspension wire by the elevating device 3 so that the distance between the camera unit 2 and the top end 104 A of the concrete filling 104 maintains a predetermined value. By configuring an automatic winding system that performs the winding of 28, the movement of the top end 104A can be automatically recorded based on the operation state of the lifting device 3.

The signal from the infrared distance sensor 24 in the camera unit 2 is also sent to the alarm device 9 where the camera unit 2 and the concrete
It is determined whether or not the distance between is smaller than a predetermined value,
When the distance between the camera unit 2 and the filled concrete 104 becomes equal to or less than a predetermined value, an alarm is output by sounding the buzzer 9A to alert the worker. Therefore, when an alarm is output, the operator stops the lowering of the camera unit 2 or the like so that the camera unit 2
4 can be prevented beforehand. In addition,
It is a matter of course that the alarm output may be configured to output an alarm by light using a lighting element such as a lamp or a light emitting diode, in addition to a sound. Here, it goes without saying that the above-described alarm operation can be performed using the measurement result of the measuring device 8.

As described above, since the camera unit 2 is configured using the ultra-small CCD image pickup device 22 and is small and lightweight, the camera unit 2 is used as a means for suspending the camera unit 2 in the steel column 100. The electric cables of various devices housed in the device 2 can be used as the suspension wires 28, which is convenient. In this case, if the distance from the camera unit 2 is marked in advance on the hanging wire 28, the operator can clearly know the position of the camera unit 2 in the steel column 100.

[0034]

According to the present invention, as described above, since the camera unit in which the CCD image pickup device and the illumination device are housed in the cover is used, the size and weight can be reduced, and the diaphragm hole in the steel pillar can be formed. Can easily pass through,
The inside of the steel column and the state of concrete filling in the steel column can be observed in detail.

Further, according to the configuration in which the distance sensor is housed in the camera unit and the distance between the camera unit and the filled concrete is displayed by the output from the distance sensor, the position of the camera unit in the steel column is determined. The camera unit can be reliably grasped, and the elevation of the camera unit can be controlled without immersing the camera unit in the filled concrete.
Also, the filling speed of the concrete can be grasped from the display result.

Further, according to the configuration in which the alarm is output when the distance between the camera unit and the concrete in the steel column becomes equal to or less than a predetermined value by the alarm device, when the alarm is output, the camera unit is lowered. The camera unit is immersed in the filled concrete by stopping
Alternatively, collision can be prevented beforehand.

As described above, since the camera unit is lightweight, when the camera unit is suspended in a steel column, there is no need to separately prepare a suspension wire or the like, and an electric cable from each device in the camera unit is required. It is possible to suspend the camera unit by using, and it is not necessary to use a large lifting device.

Further, since the whole apparatus is compact, it can be easily moved and stored, and the distance sensor provided in the camera unit can prevent an accident that the camera unit is immersed in the filled concrete. .

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of an embodiment of a concrete filling management device having a CFT structure according to the present invention.

FIG. 2 is an enlarged sectional view of the camera unit shown in FIG.

FIG. 3 is an enlarged front view of the camera unit shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete filling management device 2 Camera unit 3 Elevating device 7 TV monitor 8 Measuring device 9 Alarm device 21 Cover 22 CCD imaging device 23 Illumination device 24 Infrared distance sensor 100 Steel column 101 Pressure entrance 102 Diaphragm 103 Hole 104 Filling concrete 104A Top end C1 , C2, C3 electric cable

Claims (3)

[Claims] 1. A concrete filling management device having a CFT structure, wherein a CCD image pickup device and a lighting device are housed in a cover, and are put in a steel column to photograph a state inside the steel column. A concrete filling management device having a CFT structure, comprising: a camera unit; and an image monitor device for displaying a state inside the steel column captured by the CCD imaging device. 2. A display device which accommodates a distance sensor in the camera unit and displays a distance between the camera unit and concrete filled in the steel column in response to an output from the distance sensor. The concrete filling management device having a CFT structure according to claim 1. 3. A distance sensor is housed in the camera unit, and a distance between the camera unit and the concrete filling in the steel column is reduced to a predetermined value or less in response to an output from the distance sensor. 2. The CFT according to claim 1, further comprising an alarm device for generating an alarm output in a case.
Construction concrete filling management device.