JPH06248798A - Simplified green cutter - Google Patents

Abstract

PURPOSE:To provide a simplified green cutter compact and capable of making small turns while preventing a worker from being splashed with water by providing a water spray nozzle and a rotary brush additionally at a traveling truck provided with an operating handle. CONSTITUTION:A wire brush 3 is rotated and brought into contact with the concrete placed face A by an elevating device 13 for the wire brush 3. At this time, contact pressure is regulated by the elevating device 13. Water is sprayed toward the sliding position of the wire brush 3 by a water spray nozzle 18. A traveling truck 1 is steered by an operating handle 1c. After the termination of green cutting by the sliding motion of the wire brush 3, residual material (muck) on the concrete placed face A is washed away first by a water spray nozzle on the front side of the traveling truck, and then the muck is chipped by the rotation of the wire brush 3 and washed away by the water spray nozzle 18. The wire brush 3 can be of cylindrical or plate shape and used properly according to the state of the concrete placed face A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple green cutting machine for green cutting a concrete surface when constructing a concrete structure such as a dam.

[0002]

2. Description of the Related Art Generally, when pouring concrete,
Soluble inorganic salts, called “latance” in concretes, float on the surface of the concretes, and when they are large, they remain as a leitance layer having a thickness of about 1 mm. Then, the remaining of the leitance layer causes a decrease in the strength of the surface of the cast concrete, so that it is necessary to remove the leitance on the surface of the concrete after the concrete has been cast.

Conventionally, when a concrete surface is green cut at a work site such as a dam, an operator carries a nozzle to spray a high-pressure water stream onto a concrete placing surface, and depending on a construction method, a cleaning vehicle. I am using a sweeper. In addition, there is a case where green cutting of the concrete surface is performed using a polisher.

[0004]

By the way, in the above-mentioned green cutting work, in the method of spraying the high-pressure water stream ejected from the nozzle onto the concrete pouring surface, the operator blows off the water ejected from the nozzle, There was a problem that the work environment deteriorates. Further, in the work using the sweeper, one sweeper requires two to three workers, which causes a problem that the work cost becomes high. Further, in the work using the polisher, since the polisher itself is small, the workable range per unit time is limited. There was a problem of burdening the person. In addition, since it is necessary to work with a polisher in a narrow place, there is a problem that working efficiency in such a place is reduced.

Further, when the above-mentioned green cutting work is performed, a large amount of waste called scrap is generated. Then, the worker usually collects it in one place with a large amount of low-pressure water sprinkled from the hose, but if it is hardened at this point, it cannot be washed away by the low-pressure water, and due to a scoop, etc. It is necessary to collect them, which causes an excessive burden on the worker and also causes a problem that work efficiency is deteriorated.

The present invention has been made in view of the above circumstances, and it is possible to perform not only the green-cutting work but also the scrap collecting work, and further, it is small and easy to operate and the turning is small. It is an object of the present invention to provide a simple type green cutting machine that can perform work at low cost without imposing an excessive burden.

[0007]

In order to achieve the above object, in the first aspect of the invention, a traveling carriage having an operation handle which is operated from the rear side by an operator, and a traveling carriage provided at a lower portion on the front side of the traveling carriage are provided. A brush mechanism having a rotatable brush that slides on a concrete placing surface; a power source mounted on the traveling carriage to drive the brush of the brush mechanism to rotate; and water toward the position of the brush. A green cut machine is constructed from the spray nozzles.

In the second invention, the traveling carriage is provided with an elevating mechanism for moving the brush up and down.

In the third invention, the brush is rotatably provided by a shaft arranged in the horizontal direction.

In the fourth invention, the brush is rotatably provided by a shaft arranged in the vertical direction.

In the fifth aspect of the invention, a pair of water spray nozzles for recovering misalignment is provided on each side of the traveling carriage to eject water toward the front inside of the traveling carriage.

[0012]

According to the first aspect of the invention, a traveling carriage having an operation handle which is operated from the rear side by an operator, and a rotatable carriage which is provided at a lower portion on the front side of the traveling carriage and slid on a concrete placing surface. Green cutting machine including a brush mechanism having a different brush, a power source mounted on the traveling carriage for rotationally driving the brush of the brush mechanism, and a sprinkling nozzle for ejecting water toward the position of the brush. Since it is small, the operator can freely move it with the operation handle, which allows a small turning.

In the second aspect of the invention, since the lifting mechanism for moving the brush up and down is provided, the contact pressure between the brush and the concrete placing surface can be set to an optimum value.

In the third invention, a brush sliding on the concrete placing surface is rotatably provided by a shaft arranged in the horizontal direction, and in the fourth invention, the brush sliding on the concrete placing surface is in the vertical direction. Since it is rotatably provided by the shaft arranged at, the green cutting work can be efficiently performed by properly using these brushes according to the state of the concrete placing surface.

According to the fifth aspect of the invention, each side of the traveling carriage is
Since the spray nozzles for collecting sludge for ejecting water are provided on the front inside of the traveling carriage, the sludge remaining on the concrete placing surface after the completion of the green cutting work is The scraps that have been washed away toward the central portion and have not been washed away by the spray nozzle for collecting scraps are scraped off by rotating the wire brush located on the rear side, and the scraps are further washed away by the spray nozzles at the rear side.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, referring to FIG. 1 and FIG. 2, what is denoted by reference numeral 1 in these figures is a traveling carriage having wheels 2 on each side portion in the center, and in the front portion of the traveling carriage 1, A frame 1A is provided, which is rotatably pin-coupled around an axle extension line of the wheel 2. Further, the frame 1A has wire brushes 3 and 4 for scraping off the leitance layer on the concrete placing surface A. A brush mechanism 5 is provided.

The brush mechanism 5 includes an engine 6 provided at an upper center of the traveling carriage 1, and a chain case 7 having a chain and a sprocket (not shown) to which the power generated by the engine 6 is transmitted. , A gear case 8 which is a speed reducer into which the power transmitted by the chain and the sprocket is input through an input shaft, and the power of the engine 6 is transmitted through an output shaft of the gear case 8.
A pair of shafts 9 and 10, both ends of which are rotatably supported by bearings (not shown) and horizontally provided, and the shafts 9 and 10 fixed around the shafts 9 and 10.
The cylindrical wire brushes 3 and 4 that rotate integrally with the casters 11 and 12 fixed to the lower front side of the frame 1A and the outside of the wire brushes 3 and 4, and the bearings of the shafts 9 and 10 are moved up and down. The lifting and lowering mechanism 13 moves the wire brushes 3 and 4 close to and away from the concrete pouring surface A. And
With the above configuration, the power generated by the engine 6 is transmitted to the shafts 9 and 10 through the chain and the sprocket in the chain case 7 and the gear case 8, respectively.
-The wire brushes 3 and 4 provided integrally with 10 rotate.

On the other hand, as shown in FIG. 3, an elevating mechanism 13 for elevating the wire brushes 3 and 4 includes a motor 14 fixed to the frame 1A and a screw provided in the vertical direction and driven to rotate by the motor 14. 15 and the shaft 9
A nut 16 fixed to a vertically movable frame 1B that supports 10 bearings, and having the screw 15 screwed into it. When the screw 15 is rotated by the motor 14, the nut 16 and the movable vertically. The wire brushes 3 and 4 move up and down through the bearings of the frame 1B and the shafts 9 and 10, so that the wire brushes 3 and 4 are moved up and down with respect to the traveling carriage 1, that is, on the concrete placing surface A. On the other hand, the wire brushes 3 and 4 are arranged to be closely spaced. A ball screw may be used as the screw of the elevating mechanism 13.

Further, when the bearings of the shafts 9 and 10 are moved up and down by the elevating mechanism 13, the gear case 8 is also moved up and down, and the angle between the gear case 8 and the chain case 7 is changed. However, such an angle change is allowed because the shaft of the sprocket in the chain case 7 and the input shaft of the gear case 8 are rotatably provided. The motor 14 is operated by electric power from a generator 17 driven by the engine 6 as a power source. The elevating mechanism 13 is provided for each bearing of the shafts 9 and 10, and is controlled by a control panel (not shown) so that the shafts 9 and 10 are always kept in a horizontal state even when the elevating mechanism 13 is driven. .

As shown in FIG. 2, a sprinkler nozzle 18 and a hose 19 for supplying water to the sprinkler nozzle 18 are provided at the lower rear portion of the traveling carriage 1. The water spray nozzle 18 is fixed to a nozzle support portion 20 rotatably provided on the traveling carriage 1 about an up-down axis, and the nozzle support portion 20 directs the water spray nozzle 18 forward. Moreover, the head can be freely shaken in the horizontal direction. In addition, this nozzle support 2
0 is usually set such that the water spray nozzle 18 faces the position where the wire brushes 3 and 4 slide on the concrete placing surface A. In addition, an operation handle 1C for steering the traveling carriage 1 is provided at the rear and upper portions of the traveling carriage 1.

The green cutting machine as described above is
A traveling carriage 1 having an operation handle 1C that is operated from the rear side by an operator, and a rotatable wire brushes 3 and 4 provided on the lower front side of the traveling carriage 1 and slid on a concrete placing surface A. A brush mechanism 5 having the same, an engine 6 mounted on the traveling carriage 1 for rotationally driving the wire brushes 3 and 4 of the brush mechanism 5, and a sprinkling nozzle for ejecting water in the direction of the wire brushes 3 and 4. Since it is a small machine equipped with 18, the operator can freely move it with the operation handle 1C, and it is possible to turn around a small amount.
It is possible to obtain an effect that the green cutting work can be performed without putting an excessive burden on the worker.

<Other Embodiment 1> In the above green cut machine, the motor 15 rotates the screw 15 to move the wire brushes 3 and 4 up and down, but the present invention is not limited to this, and as shown in FIG. Alternatively, an operator may rotate the handle 21 to rotate the screw 15 to move the wire brushes 3 and 4 up and down.

<Other Embodiment 2> In the above green cutting machine, a pair of wire brushes 3 and 4 are provided, but the present invention is not limited to this, and one shaft 22 as shown in FIG.
Therefore, one wire brush 23 may be used. And
In this case, the shaft 22 may be driven on both sides. As shown in FIG. 5, the power generated by the engine 6 is transferred to the output shaft 6A of the engine 6, the chain 24, the sprocket 25, the rotary shaft 26, Transmission to one side of the shaft 22 through the universal joint 27, etc.
May be driven on one side.

<Other Embodiment 3> In the above green cutting machine, the cylindrical wire brushes 3 and 4 are rotated by the shafts 9 and 10 arranged in the horizontal direction, but the present invention is not limited to this. It is also possible to arrange the shafts 28 vertically as shown in, and to fix a planar wire brush 29 that rotates in a horizontal plane to the lower end of the shaft 28.

Next, the second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. Incidentally, in the second embodiment, the same reference numerals are given to the portions having the same configuration as the first embodiment, and the duplicated description will be omitted. The green cutting machine of the second embodiment differs from the green cutting machine of the first embodiment in the position where the water spray nozzles 30 to 32 are provided. The water spray nozzle 30 is the water spray nozzle 18 of the first embodiment described above.
Similarly to the above, water is jetted from the rear side to the position where the wire brushes 3 and 4 are provided on the lower rear side of the traveling carriage 1 and slide on the concrete placing surface A.

The sprinkling nozzles 31 and 32 are respectively provided on the front upper side of the traveling carriage 1 and eject water toward the front inside of the traveling carriage 1. Further, the watering nozzles 31 and 32 are
As shown in FIG. 9, the central portions thereof are respectively supported by the tips of the nozzle support members 34 pivotally supported by the support frame 33, and the directions of the water spray nozzles 31 and 32 are adjusted by the cam mechanism 35. Has become. Cam mechanism 3
As shown in FIG. 9, the reference numeral 5 has a cam 36 and a cam follower 37 which is guided along the cam surface of the cam 36 and is provided at the rear portion of the nozzle support member 34. The power of the engine 6 is selectively applied to the cam 36 through the chain case 7 and the gear box 38 (ON / ON.
The cam follower 37 is vertically moved by the rotation of the rotary shaft 36A, and the position where the water is sprayed by the water spray nozzles 31 and 32.
The position can be freely changed from a close position close to the traveling carriage 1 to a distant position far from the traveling carriage 1.
In these figures, reference numerals 39 and 40 are hoses for supplying low-pressure water to the water spray nozzles 31 and 32.

Then, in the simple type green cutting machine configured as described above, after the green cutting work is completed, the residue remaining on the concrete placing surface A is first washed off by the water spray nozzles 31 and 32, and this water spray is further performed. Nozzle 3
The scraps that have not been washed away by 1.32 can be scraped off by rotating the wire brushes 3 and 4 located on the rear side, and the scraped scrapes can be washed away by the water spray nozzle 30. That is, in the green-cutting machine shown in the second embodiment, the operator can freely move the operation handle 1C as shown in the first embodiment so that the operator can turn around a small amount. It is possible to obtain an effect that the green cutting work can be efficiently performed without applying a burden, and an effect that the scrap remaining on the concrete placing surface A can be efficiently collected after the completion of the green cutting work.

[0028]

As described in detail above, according to the present invention,
A traveling carriage having an operation handle that is operated from the rear side by an operator, a brush mechanism having a rotatable brush provided at a lower portion on the front side of the traveling carriage and slidable on a concrete placing surface, and the traveling carriage. Since it is a green cut machine that is composed of a power source for rotating the brush of the brush mechanism to drive the brush mechanism, and a water spray nozzle that sprays water toward the position of the brush, it is small and The worker can move it freely and can turn around a small amount, which has the effect of improving the work efficiency and keeping the work cost low without imposing an excessive burden on the worker.

Further, in the second invention, since the lifting mechanism for moving the brush up and down is provided, the contact pressure between the brush and the concrete placing surface can be set to an optimum value. This makes it possible to efficiently perform green cutting work on the concrete placing surface.

In the third invention, a brush sliding on the concrete placing surface is rotatably provided by a shaft arranged in the horizontal direction. In the fourth invention, a brush sliding on the concrete placing surface is provided. Since it is rotatably provided by the shaft arranged in the vertical direction, it is possible to perform an efficient green cutting work by properly using these brushes according to the state of the concrete placing surface.

Further, in the fifth aspect of the invention, since a pair of water spray nozzles for collecting scraps for ejecting water to the front inside are provided on each side portion of the traveling carriage, after the green cutting work is completed, the spraying nozzles are put on the concrete placing surface. The residual slag is first washed away with this slurry collection water spray nozzle, and the slag that has not been washed away with this slurry collection water spray nozzle is scraped off by rotating the wire brush located on the rear side.
The scraped off can be washed away by the water spray nozzle at the rear side, which also has the effect of efficiently collecting the scrap caused by the green cut work together with the green cut work.

[Brief description of drawings]

FIG. 1 is a plan view of a green cutting machine showing a first embodiment.

FIG. 2 is a front view of FIG.

FIG. 3 is a front view showing an elevating mechanism 13 of the green cutting machine of FIG.

FIG. 4 is a front view showing another embodiment (1) of the green cutting machine.

FIG. 5 is a front view showing another embodiment (2) of the green cutting machine.

FIG. 6 is a front view showing another embodiment (3) of the green cutting machine.

FIG. 7 is a plan view of a green cutting machine showing a second embodiment.

FIG. 8 is a front view of FIG.

FIG. 9 is a front view showing the vicinity of a water spray nozzle 31 of a second embodiment.

[Explanation of symbols]

 A Concrete placing surface 1 Traveling carriage 1C Operation handle 3 Wire brush 4 Wire brush 5 Brush mechanism 6 Engine 9 Shaft 10 Shaft 13 Lifting mechanism 18 Sprinkling nozzle 28 Shaft 29 Wire brush 30 Sprinkling nozzle 31 Sprinkling nozzle (Sprinkling nozzle for collecting sludge) ) 32 Sprinkling nozzle (Sprinkling collection sprinkling nozzle)

Claims (5)

[Claims] 1. A brush mechanism having a traveling carriage having an operation handle which is operated by an operator from the rear side, and a rotatable brush provided at a lower portion on the front side of the traveling carriage and slidable on a concrete placing surface. And a power source mounted on the traveling carriage for rotationally driving the brush of the brush mechanism,
A simple green cutting machine comprising: a sprinkling nozzle for ejecting water toward the position of the brush. 2. The simplified green cutting machine according to claim 1, wherein the traveling carriage is provided with an elevating mechanism for moving the brush up and down. 3. The simplified green cutting machine according to claim 1, wherein the brush is rotatably provided by a shaft arranged in a horizontal direction. 4. The simple green cutting machine according to claim 1, wherein the brush is rotatably provided by a shaft arranged in a vertical direction. 5. The simplified mold according to claim 1, wherein a pair of water spray nozzles for collecting sludge for ejecting water toward the front inside of the traveling carriage is provided on each side portion of the traveling carriage. Green cut machine.