JPH083272B2 - Concrete compaction method and its equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete compaction method and apparatus for vibrating a cast concrete by a vibrator mounted on a formwork, and in particular, it automatically prevents concrete malfunction while preventing the vibrator from malfunctioning. TECHNICAL FIELD The present invention relates to a compaction method for compacting concrete and a device therefor.

[0002]

2. Description of the Related Art In constructing a concrete structure, vibration is applied to concrete placed in a mold by a vibrator to compact it. When performing this compaction, it is necessary to accurately grasp the concrete filling condition.For example, a sensor for sensing the concrete filling and a vibrator are mounted on the formwork, and the detector continues for a predetermined period of time. It is conceivable to operate the vibrator according to the condition that is detected.

In this case, the detector for detecting the filling of concrete is generally designed to detect a large amount of water contained in the cast concrete. That is, as an example, it is utilized that two electrodes separated in the mold conduct electricity through the water content of the concrete when it comes into contact with the cast concrete. For example, the two electrodes are slightly (usually several mm). ) A configuration is adopted in which the sensor portions that are spaced apart and arranged in parallel are penetrated into the mold and a voltage is applied between both electrodes.

[0004]

However, in the above-mentioned sensor, since the distance between the two electrodes of the sensor section is small, there is a possibility that the sensor may become conductive and malfunction even if it is sprinkled with water before being placed. There was a point.

Further, it is necessary to previously provide a through hole for mounting the sensor portion in the mold, and it is troublesome and complicated to mount the sensor. Moreover, since the concrete enters the hole for mounting the sensor portion, there is a disadvantage that a convex portion remains on the concrete surface after the mold is removed and the appearance is impaired.

The present invention has been made in view of the above circumstances, and an object thereof is easy handling and excellent operability.
It is to provide a concrete compaction method and device that can accurately detect concrete filling, can expect a reliable compaction operation without malfunction due to water sprinkling, etc. and that does not damage the concrete surface unnecessarily. .

[0007]

In order to achieve the above object, the present invention provides a concrete compacting method in which a vibrator is attached to a mold, and vibration is applied by the vibrator to compact the poured concrete. Fixing the vibrator to the thick pipe that is connected to the separator,
A step of locking by implanting conductor rod-shaped in the mold, before
Note that when the vibrator is ready for automatic operation
And displaying, by applying a voltage between the vibrator and the rod-shaped conductor, by monitoring the current flowing between the conductor of the rod-shaped vibrator, when more than a predetermined current value of the energization continues for a predetermined time It was judged that the concrete was detected.
Engineering to start the vibrator with a constant to display
Degree and, Bei and a step of displaying the compaction operation is completed while subsequently stopping the vibrator when a predetermined time has elapsed
It is characterized by what you got .

Further, according to the present invention, a vibrator fixed to a thick pipe connected to a separator of a mold and electrically connected to the separator and an electrode formed by being driven into the mold are formed. A rod-shaped conductor, and continuity monitoring means for monitoring a current flowing between the rod-shaped conductor and the vibrator,
Based on the detection result of the continuity monitoring means, a control means for activating the vibrator when the energization detection of a predetermined current value or more continues for a predetermined time, and then stopping the vibrator when the predetermined time has elapsed, and an automatic operation of the vibrator.
The first indicator light that lights up when the
Second indicator light that lights up when the filling of the reet is detected
And lights up when the concrete is completely compacted
And a display unit including a third indicator light .

[0009]

The operation of the present invention will be described. Since the vibrator fixed to the thick pipe is electrically connected to the separator penetrating the form via the thick pipe, the vibrator itself detects the pouring concrete. When one of the electrodes is formed, the rod-shaped conductor that is driven into the mold and locked forms the other electrode, and when the cast concrete comes into contact with this rod-shaped conductor, the two electrically conduct. Since the vibrator is fixed to the thick pipe and the rod-shaped conductor is driven into the mold, the vibrator can be ready for automatic operation and is extremely easy to handle. Further, since the rod-shaped conductor can be driven into an appropriate portion of the form, the distance between the rod-shaped conductor and the separator, which is an electrode for detecting cast concrete, can be set arbitrarily. Furthermore, since only the tips of the rod-shaped conductors are penetrated into the form, the concrete surface is not unnecessarily damaged.

At the time of pouring concrete, the conduction state between the rod-shaped conductor and the vibrator fixed to the thick pipe (separator) is monitored by the conduction monitoring means, and the vibration is controlled by the control means which receives the monitor detection. It is started and stopped under current and time
Since the state of this driving operation is displayed on the display means, reliable compaction work can be performed.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a configuration diagram showing a preferred embodiment of a concrete compacting device according to the present invention, and FIG. 2 is a side view for explaining a mounted state of the device. FIG. 1 shows a situation where concrete is being filled in the mold, and FIG. 2 shows the outside of the mold.

This concrete compaction device is basically a vibrator 1 which is mounted on a mold 9 and vibrates the concrete 10 for compaction, and an electrode which is driven into the mold 9 to form an electrode. It includes a driving sensor 2 as a rod-shaped conductor and a switch box 3 serving as a controller. The switch box 3 is provided with a continuity monitor section 30 as continuity monitor means, a control section 31 as control means, and a display section 32 as display means.

A vertical thick pipe 8 and a lateral thick pipe 7 are assembled on the outside of the mold 9 so as to intersect with each other, and a separator 6 is fastened to the intersection of both. Therefore, the thick pipes 7 and 8 at both ends and the separator 6 are electrically connected.

The vibrator 1 is fixed to the lateral thick pipe 7 via the mounting plate 4 and is adapted to be supplied with electric power from the control unit 31. The vibrator 1 and the continuity monitor unit 30 are connected by an electric wire. Here, the horizontal end thick pipe 7 is in a state of being electrically connected to the separator 6, and the vibrator 1 is fixed to the attachment plate 4 which is attached to the horizontal end thick pipe 7, so that the vibrator 1 is connected to the separator 6. It is electrically connected, and therefore the separator 6 and the continuity monitoring unit 30 are electrically connected. Since the separator 6 penetrates the form 9, it forms one electrode for detecting the poured concrete 10. At this time, the electric wire connected to the continuity monitor unit 30 may be connected to the mounting plate 4 instead of the vibrator 1.

As shown in the enlarged view of FIG. 3, in the driving sensor 2, a nail-shaped rod 20 is driven into the mold 9 to form an electrode. The head side is covered with a handle 21 so that it can be held. On the tip end side of the rod body 20, a predetermined length is thinly coated with the resin 22 from the portion protruding from the handle 21 so that only the tip end is exposed. That is, the rod 20 is insulated from the mold 9 by the coating layer formed of the resin 22 when the mold 20 is driven into the mold 9, so that erroneous conduction detection due to the water content of the mold 9 does not occur. . Of course, the coat layer of the resin 22 may be omitted depending on the state of the formwork 9 at the construction site. An electric wire is connected to the rod body 20 inside the handle 21, and the electric wire is extended and connected to the continuity monitor unit 30. The handle 21 is formed in a lever shape so that a large force can be applied when it is gripped, and has a strength capable of withstanding the driving force of the mallet 5 or the like. For this reason, it is possible not only to strike the mold frame 9 with a striking force, but also to easily pierce or pull out while twisting by hand. In addition,
Instead of the lever-shaped handle 21, a grip ball-shaped handle 210 may be used. Further, the handle 21 or 210 may be formed integrally with the rod body 20.

As shown in FIG. 5, the switch box 3 can be engaged with the lateral thick pipe 7 by a hook 33 provided on the back surface thereof. For this reason, it is possible to avoid contamination due to scattered water, concrete, and the like, and it is possible to prevent damage due to accidentally stepped on by an operator at the construction site.

The switch box 3 has on its surface a standby indicator light 320, which is a first indicator light, and a second indicator light.
Concrete detection indicator light 321, which is the indicator light of
A compaction completion indicator light 322, which is an indicator light, is provided, and a switch 34 for automatically operating and manually operating the vibrator and a power switch 35 are also provided. The status of the driving operation by the control unit 31 is appropriately displayed on these indicator lights 320 to 322. That is, the standby indicator light 320 is in a state ready for automatic operation, the concrete detection indicator light 321 is a state in which the filling of the concrete 10 is detected, and the compaction completion indicator light 322.
Each of them is lit up when the compaction of the concrete 10 is completed.
The display unit 32 shown in FIG.
The electric wire from the vibrator 1 and the driving sensor 2
The electric wire from is connected to each switch box 3 via connectors 36 and 37 provided on the side surface of the switch box 3, and can be separated at the parts of the connectors 36 and 37, respectively.

In the continuity monitor section 30, a voltage is applied between the rod body 20 of the driving sensor 2 and the separator 6 to detect the presence or absence of continuity and the current value level at that time. It is sent to the control unit 31. That is, the conduction monitor unit 30 monitors the conduction state between the rod body 20 of the driving sensor 2 and the separator 6, and when the rod body 20 and the separator 6 come into contact with the pouring concrete 10 in the mold 9, A predetermined amount of current flowing between the rod 20 and the separator 6 functions as a so-called concrete sensor that senses the filling of the concrete 10. The positive polarity may be applied to either the implantation sensor 2 or the separator 6 or the vibrator 1 when applying the voltage.

FIG. 6 is a flow chart for explaining the compaction operation of concrete.

In the control section 31, when the power switch 35 is turned on and the automatic / manual switch 34 is switched to the automatic side, that is, the standby indicator lamp 320 is turned on when the automatic operation is ready (S1). . When a level signal for continuity detection input from the continuity monitor unit 30 is received (S2), a level signal of a predetermined level or higher (a predetermined current value or higher) is detected (S3, YES), and when it continues for a predetermined time ( S4, YES), as an example of the setting conditions, if the conduction of 600 μA or more continues for 3 seconds when 4.5 V is applied, the concrete sensor 10 is filled up to the driving sensor 2, and the driving sensor 2 and the vibrator 1 are set.
It is determined that there is continuity between the two, and concrete detection indicator light 321
Is turned on (S5), and the vibrator 1 is activated (S5).
6). After that, when a predetermined time has passed (S7, YE
S), the vibrator 1 is stopped (S8), the compaction completion indicator lamp is turned on (S9), and the control operation is ended.

That is, in filling (placing) the concrete 10, when the vibrator 1 is attached to the mold 9 and the concrete 1 is vibrated and compacted by the vibrator 1, first the separator 6 of the mold 9 and The vibrator 1 is fixed to the lateral thick pipe 7 to be connected. Then, the nail-shaped rod body 20 of the driving sensor 2 is driven and locked in the frame 9, and the driving sensor 2 and the vibrator 1 are driven.
The electrical continuity between the rod body 20 and the separator 6 is monitored. Here, when continuity of a predetermined level or more (predetermined current value or more) continues for a predetermined time, it is determined to be conduction by the pouring concrete 10 and the vibrator 1 is activated,
After that, the vibrator 1 is stopped when a predetermined time has elapsed. Note that the operation time of the vibrator 1 depends on the control unit 31.
The timer should be built in and set.

According to such a construction method, the wide end thick pipe 7
The vibrator 1 fixed to the above is electrically connected to the separator 6 penetrating the mold 9 to form one electrode for sensing the cast concrete 10, and the vibrator 1 is driven into the mold 9 and locked. Since the rod 20 of the driving sensor 2 forms the other electrode, when the driving concrete 10 contacts both electrodes, they are electrically conducted and the driving concrete 10 can be reliably sensed. Further, the vibrator 1 is fixed to the lateral end thick pipe 7, and the driving sensor 2 is attached to the form 9
Since the automatic operation of the vibrator 1 can be prepared by simply driving in, the handling is extremely easy and the operability is excellent.

Further, the driving sensor 2 can be driven into an appropriate portion of the form 9, and the interval between the separator 6 which is an electrode for detecting the concrete 10 to be poured and the rod 20 of the driving sensor 2 is arbitrary. Since it can be set, it is possible to prevent electricity from being sprinkled or when the concrete falls from the slab is not energized, and it is possible to prevent erroneous detection of the placed concrete and erroneous operation of the vibrator.

Further, the rod 20 of the driving sensor 2 is penetrated into the mold 9, and since the rod 20 has a nail shape,
The surface of the concrete 10 is not unnecessarily damaged and the appearance is not spoiled.

Further, according to the concrete compacting device having the above-mentioned structure, when the concrete 10 is placed, the conduction monitor section 30 monitors the conduction state between the driving sensor 2 and the vibrator 1, and receives the monitor detection. The control unit 31 starts and stops the vibrator 1 under a predetermined condition, the state of the driving operation is appropriately displayed on each of the indicator lights 320 to 322 of the display unit 32, and the concrete 10 is actually placed. In this case, since it is determined that the concrete 10 has been sensed when the continuity exceeds a predetermined level (predetermined current value) and has continued for a predetermined time or longer, there is no erroneous detection in sprinkling water or when the concrete is dropped from the slab. Therefore, the filling of the concrete 10 can be accurately detected. Since the vibrator 1 is started and stopped upon receiving this detection, a reliable compaction operation can be automatically performed.

Further, since the driving sensor 2 has the simple structure as described above, it is possible to reduce the size and improve the handleability.

[0027]

As described in detail above, according to the concrete compaction method and the apparatus thereof according to the present invention,
Exhibits the following excellent effects. (1) The vibrator can be prepared for automatic operation simply by fixing the vibrator to the thick pipe and driving the rod-shaped conductor into the form, and it is extremely easy to handle and has excellent operability and operation. Status is displayed on the display
Therefore, the workability is even better . (2) Since the rod-shaped conductor can be driven into the separator at an arbitrary interval, electrical connection between the rod-shaped conductor and the vibrator does not occur when water is sprinkled, and erroneous detection of concrete and malfunction of the vibrator can be prevented. (3) Since only the tips of the rod-shaped conductors are penetrated into the formwork, the concrete surface is not unnecessarily damaged. (4) The concrete is sensed when the conductivity exceeds a predetermined level (predetermined current value) when pouring the concrete and continues for a predetermined time or longer, so that the concrete can be accurately sensed and the vibrator can be detected according to the result. Is started and stopped, so that a reliable compaction operation can be performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a side view illustrating a mounted state of the concrete compacting device according to the present invention.

FIG. 3 is a partially cutaway side sectional view showing a mounting state of a driving sensor.

FIG. 4 is a side view showing another embodiment of the driving sensor.

FIG. 5 is a partially cutaway side sectional view showing a mounted state of the switch box.

FIG. 6 is a flowchart illustrating a concrete compacting operation.

[Explanation of symbols]

 1 Vibrator 2 Driving Sensor 6 Separator 7 Horizontal End Thick Pipe 9 Formwork 10 Concrete 30 Continuity Monitor Means (Continuity Monitor) 31 Control Means (Control) 32 Display Means (Display)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Nomura 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo headquarters (72) Inventor Shinichi Hashimoto 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office (56) References JP-A-2-157359 (JP, A)

Claims (2)

[Claims] 1. A method of fixing a vibrator to a thick pipe connected to a separator of a mold in a concrete compaction method in which a vibrator is attached to the mold and vibration is applied by the vibrator to compact the poured concrete. If this a step for locking by implanting conductor rod-shaped in the mold, in a state in which automatic operation preparation of the vibrator is completed
And a voltage is applied between the rod-shaped conductor and the vibrator.
And monitors the current flowing between the conductor of the bar vibrator, a predetermined current value or more energization displays determines that senses Da設concrete when continued for a predetermined time
Process and, this <br/> the compaction method of the concrete, characterized in having at the time of the lapse then a predetermined time and displaying the compaction operation is completed to stop the vibrator to start the vibrator with. 2. A vibrator fixed to a thick pipe connected to a separator of a mold and electrically connected to the separator, and a rod-shaped conductor which is driven into the mold to form an electrode. A conduction monitor means for monitoring a current flowing between the rod-shaped conductor and the vibrator; and a detection result of the conduction monitor means, when the electricity detection of a predetermined current value or more continues for a predetermined time, the vibrator is activated, and then, for a predetermined time. Control means for stopping the vibrator when the time has elapsed, and lights when the vibrator is ready for automatic operation
The first indicator light and the state that concrete filling is detected.
Indicator light that lights up in the state and compaction of the concrete
A compaction device for concrete, comprising: a display means comprising a third indicator light that lights up in a completed state .