JPH0223657B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water absorption work vehicle for concrete floor finishing, which removes water seeping out from the upper surface of a semi-solidified concrete floor that has been compacted after concrete placement.

The above-mentioned water absorption work is carried out prior to surface finishing work to smooth the surface of the concrete floor. Conventionally, when performing this water absorption work, a working vehicle generally sweeps up the water and drains it by pouring it into a drainage ditch. However, it relies on manual work, requires a great deal of effort, and has the drawbacks of low work efficiency.

In view of the above points, it is an object of the present invention to enable water absorption work to be carried out efficiently, to easily detect the hardness of a concrete floor surface, and to enable surface finishing work to be performed satisfactorily.

In order to achieve the above object, the water absorption work vehicle for finishing concrete floors according to the present invention has a water absorption device for sucking water on the surface of a poured concrete floor installed on a traveling vehicle body equipped with a drive traveling device, and It is characterized by being equipped with a sensor that detects the hardness of the floor surface.

The effects of the above characteristic configuration are as follows.

In other words, water absorption work can be done while driving.
All you need to do is steer and travel the traveling device.
It has become possible to absorb water with less effort and improve work efficiency.

In addition, in the case of manual sweeping work, there was a disadvantage that the surface of the concrete floor was roughened by scraping off dirt with the sweeping tool, making subsequent surface finishing work time-consuming. According to the above, by increasing the ground contact area of the traveling device and setting the surface pressure below a predetermined value, water absorption work can be performed well without roughening the surface of the concrete floor, which has the advantage of further improving work efficiency.

Furthermore, in order to detect the hardness of the surface of a concrete floor, the conventional method is to press the surface of the concrete floor with your finger and judge the hardness based on empirical intuition based on the degree of pushing. It had to be repeated at dispersed locations over a wide work area, which required a great deal of effort, and it also had the drawbacks of easily misjudging the hardness and starting the surface finishing work after the water absorption work was done at the wrong time. According to the present invention, since the hardness can be detected by the sensor along with the water absorption work as the vehicle travels, the hardness can be detected efficiently and accurately, making it easy to know when to start the surface finishing work. This has enabled us to perform surface finishing work better and to further improve the efficiency of a series of operations for finishing concrete floors.

Hereinafter, embodiments of the present invention will be described in detail based on illustrative drawings.

A water absorption device 4 is attached to a traveling vehicle body 3 equipped with a traveling device 2 consisting of a pair of left and right crawler traveling devices 1, 1, and equipped with a power source such as a battery or an engine.
A concrete floor finishing water absorption work vehicle is constructed to suck up moisture that has seeped into the upper surface of the concrete floor after the concrete is installed and the concrete is placed and compacted.

The crawler 1a of each of the crawler type traveling devices 1, 1 is made of a rubber belt with a smooth outer surface on the grounding side, and is pressed to ground on a track frame 7 that supports the front and rear wheels 5, 6. A plate member 8 is attached to the work vehicle so that the surface pressure applied to the surface of the concrete floor due to the weight of the work vehicle is minimized (eg, 0.1 kg/cm ² or less).

An electric motor 9 is attached to the traveling vehicle body 3, and a transmission 10 is interlocked and connected to the motor 9, and the transmission 10 and the left and right wheels 6, 6 on the rear side
Each of them is interlocked and connected via a steering clutch (not shown).

To configure the water absorption device 4, a support frame 11 having a triangular shape in side view is pivotally connected to the rear end side of the traveling vehicle body 3 so as to be swingable about a left-right axis. Rotating bodies 12 and 13 are rotatably mounted on the shafts at both the upper and lower ends, respectively, and an endless band 16 for absorbing water with water absorbing material 15 such as sponge adhered to the outer surface of the drive belt 14 extends over both the rotating bodies 12 and 13. Upper rotating body 1 that is also rotated
A squeezing roller 17 is mounted on a shaft near the squeezing roller 2, and a water storage tank 18 is provided in the traveling vehicle body 3, located below the squeezing roller 17. The water absorbing material 15 is pressed by the squeezing roller 17 to remove water contained therein, and is referred to as a dewatering mechanism.

An electric motor 19 attached to the support frame 11 is operatively connected to the upper rotating body 12, and the rotating body 12 and a squeeze roller 17 are operatively connected via a gear type transmission mechanism 19a.

An arm 20 is provided protruding from the support frame 11, and a rod 21 connected to the arm 20 is loosely fitted into the traveling vehicle body 3 so as to be able to slide vertically, and the fixed position of the rod 21 is adjusted by a nut 22 at a predetermined location. The spring receiver 23 is freely attached, and a compression coil spring 24 is interposed between the arm 20 and the spring receiver 23.
The ground pressure adjustment mechanism 25 is configured to adjust the ground pressure of the ground contact portion of the endless band 16 by adjusting the urging force of the ground pressure adjustment mechanism 25 .

A water surface detection sensor 2 is installed in the water storage tank 18.
6 is attached, and based on the detection result by the sensor 26, when more than a predetermined amount of water has been collected in the water storage tank 18, a buzzer 27 and a lamp 28 are configured to notify the user of this fact.

A U-shaped support member 29 is attached to the rear of the traveling vehicle body 3 so as to bypass the endless band 16, and is positioned immediately behind the endless band 16, with a concrete floor attached to the tip of the support member 29. A first sensor 30 that detects the hardness of the surface and a second sensor 31 that detects the position of the traveling vehicle body 3 are attached.

To configure the first sensor 30, a rod 33 as a grounding member is attached to the sensor case 32 so as to be able to swing up and down around the left-right axis of the vehicle body, and a side that presses the rod 33 to ground it. A spring 34 is attached to the pivot portion of the rod 33, and a potentiometer 35 is attached to the pivot portion of the rod 33 to detect the retaining angle with respect to the sensor case 32. Based on the swing angle of the rod 33, The amount of penetration into the concrete floor surface,
That is, it is configured to detect hardness.

The second sensor 31 is composed of a magnetic sensor, detects each of the vertical reinforcements 36 and horizontal reinforcements 37 arranged in the concrete floor, counts the number of vertical reinforcements 36 or horizontal reinforcements 37 passed through as the vehicle travels, and detects vertical reinforcements 36 and horizontal reinforcements 37. It is configured to detect which square the traveling vehicle body 3 is located in among the squares partitioned by the horizontal lines 36 and 37.

The detection results from the first and second sensors 30, 31 are input to the arithmetic processing unit 38, which divides the squares into squares with hardness above a predetermined level and squares with hardness below a predetermined level. 3
As shown in the figure, the system is configured to calculate the travel route of the finishing vehicle W ₂ for performing surface finishing work following the water absorption work by the water absorbing vehicle W ₁ . In the figure, A, B, C, and D indicate work areas divided by column reinforcing bars and the like.

The traveling vehicle body 3 is provided with a drive control section 39 that outputs operation signals to the motors 9 and 10, and the drive control section 39 is provided with an antenna 40 that inputs command signals, and the vehicle travels for work by remote control operation. It is configured as follows. 41 in the diagram
is the transmitting antenna for finishing vehicle _W2 .

4 and 5 show another embodiment, in which a hollow rotary body 44 having a large number of water intake ports 43 formed in a hollow pipe frame 42 extending behind the traveling vehicle body 3 is rotatable. The hollow rotating body 44 is mounted on an axis, and a water-absorbing material 45 such as a sponge is attached to the outer peripheral surface of the hollow rotating body 44.
is attached, and the traveling vehicle body 3 is provided with a vacuum suction pump 46 and a water storage tank 18, and the internal space S and the pump 46 are connected via the pipe frame 42 and the hose 47, and the concrete floor The water absorbing material 45 is impregnated with water on the surface of the tank 1, and the water is sucked into the tank 1.
The structure is such that it is collected every 8 days. 42a
reduces the internal space S, and the water-absorbing material 4 immediately after absorbing water
This is a cover body for applying suction pressure to 5 in a good manner.

An angle frame 48 extends behind the traveling vehicle body 3, and the first and second sensors 30 and 31 are attached to the lower end of the angle frame 48.

In the figure, numerals 49, . . . are obstacle detection sensors, each of which is configured to detect contact with another object and automatically stop the vehicle from traveling by the drive control unit 39 based on the detected contact with another object.

FIG. 6 shows the first sensor 30 for hardness detection.
Another embodiment of the sensor case 32 is shown.
An optical sensor 50 having a light projecting part 50a and a light receiving part 50b is attached to the sensor case 32, and is configured to detect the height of the pivot portion of the rod 33 to the sensor case 32 relative to the concrete floor surface, and
The signal from the optical sensor 50 and the signal from the potentiometer 35 are input to a subtracter 51, and the rod 33 is pressed against the surface of the concrete floor while a predetermined pressing force is applied by the spring 34.
The intrusion amount, that is, the hardness can be accurately detected.

FIG. 7 also shows another embodiment of the first sensor 30, in which a grounding member 52 is slidably moved up and down on the support member 29.
is attached, and is also provided with a compression coil spring 53 that biases the grounding member 52 upwardly to the non-grounding side, and an angle for causing the grounding member 52 to plunge into the surface of the concrete floor to a predetermined depth. A member 54 is slidably provided, a solenoid 55 is linked to the angle member 54, and a load cell 56 is attached to a portion of the angle member 54 that presses into contact with the grounding member 52 to stop traveling. At a predetermined position, the ground member 52 is energized by the solenoid 55 to plunge into the concrete floor to a predetermined depth (for example, 2 to 3 mm), the pressure in that state is detected by the load cell 56, and the hardness is determined based on the pressure. Configured to detect. In place of the load cell 55, conductive rubber may be used.

As the second sensor 31, various structures can be adopted, such as a gyro locator or a laser beam.

As the traveling device 3, various structural modifications are possible, such as using low-pressure tire wheels, or mounting a large number of rollers on parallel shafts in the front-rear direction.

The present invention can be applied to water absorption work prior to surface finishing of various concrete floors such as buildings, gas stations, and parking lots.

Further, the present invention may be configured to be a riding type vehicle by providing a driver's seat in the traveling vehicle body 3.

The crawler 1a is not limited to rubber;
For example, various structural modifications are possible, such as constructing an endless band by connecting a large number of narrow iron pieces or FRP pieces with Teflon coating on their outer surfaces so that they can swing freely in the width direction. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the water absorption work vehicle for concrete floor finishing of the present invention, in which Fig. 1 is a side view of the entire partially cut away, Fig. 2 is a plan view of the entire partially cut away, and Fig. 3 is an explanatory diagram of the working form. , FIG. 4 is a partially cutaway perspective view showing another embodiment, FIG. 5 is a cross-sectional view of the main part of FIG. 4, FIG. 6 is a side view of the main part of another embodiment, and FIG. The figure is a partially cutaway side view of main parts showing another embodiment. 2... Drive traveling device, 3... Traveling vehicle body, 4... Water absorption device, 30... Sensor, 33, 51... Grounding member.

Claims (1)

[Claims] 1. A water absorption device 4 that sucks water from the surface of a poured concrete floor to a traveling vehicle body 3 equipped with a drive traveling device 2.
A water absorption work vehicle for finishing concrete floors, characterized in that it is equipped with a sensor 30 for detecting the hardness of the surface of a poured concrete floor. 2. The water absorption work vehicle for concrete floor finishing according to claim 1, wherein the sensor 30 is provided at a position immediately after the water absorption device 4 in the traveling direction. 3. The water absorption work for finishing concrete floors according to claim 1 or 2, wherein the sensor 30 detects the reaction force required to plunge the grounding member 51 into the surface of the concrete floor to a predetermined depth. car. 4. The concrete floor according to claim 1 or 2, wherein the sensor 30 detects the amount of thrust of the grounding member 33, which is urged toward the grounding side with a predetermined pressing force, into the surface of the concrete floor. Water absorption work vehicle for finishing.