JPH0751836B2 - Laitance removal machine - Google Patents

Description

Detailed Description of the Invention

[Industrial applications]

The present invention relates to a leitance removing machine that removes the leitance that has risen and is deposited on the surface of cast concrete.

[Prior art]

Laitance is a fine substance such as cement, sand, etc. formed by the material separation of concrete, which is deposited on the surface of the concrete as the water rises in the breathing, that is, in the concrete that has not yet solidified. , Even when cured, strength, adhesion,
Since the watertightness is small and a weak layer is formed, it is a serious defect of the structure unless it is completely removed particularly in a horizontal joint. Conventionally, for example, the removal of the above-mentioned leitance in a concrete dam has been performed by using a floor polisher to carve out about 5 to 10 mm of the concrete pouring surface and wash it off with high pressure water.

[Problems to be Solved by the Invention]

However, the scraped leitance forms a sludge when mixed with water, etc., and covers the work surface that is the concrete pouring surface.Therefore, especially in the case of manual work, grasping the finish status must be done by intuition and experience. . In addition, the work is extremely difficult due to the unevenness of the concrete pouring surface, the difference in the degree of hardening of the concrete due to changes in the outside temperature, etc., and there is a risk that overcutting or uncutting will occur. Therefore, it is difficult to secure personnel due to the bad working environment where sludge is scattered, even though skilled workers are required, and the working machine is small compared to the size of the work yard. Under the circumstances, a large number of workers and a large number of workers who operate them are required at present. Furthermore, since it is necessary to use a large amount of high-pressure water for work, a large number of cables, hoses, etc. are arranged in the work yard, which poses a safety problem. An object of the present invention is to horizontally cut a concrete surface with a disk-shaped brush, suck the carved out reitance by a squeegee and feed it to a vacuum tank, and then use a cylindrical brush to vertically cut the concrete surface. In addition to cutting or wiping, the washing water is sprinkled, and the latencies and the washing water cut out there are sucked by another squeegee and fed to the vacuum tank, thereby solving the above-mentioned problems.

[Means for Solving the Problems]

In the present invention, first, the front latance processing device A is mounted on the front side of the self-propelled machine frame 1 and the rear latance processing device B is mounted on the rear side. The front leitance processing device A includes disk-shaped brushes 21 to 23 for horizontally cutting a concrete surface and a front squeegee 45 installed behind the disc brushes 21 to scrape and inhale the cutting leitance. The rear latance processing device B includes a cylindrical brush 57 for vertically cutting or wiping a concrete surface, a nozzle 76 'for spraying cleaning water, and a rear squeegee installed behind it for scraping and sucking the cutting latance and the sprayed cleaning water. 62
Consists of. Further, the machine casing 1 has two vacuum tanks 5 which are separately connected to the front squeegee 45 and the rear squeegee 62, respectively.
It is equipped with one vacuum tank connected to 5,78 or both skewers.

[Action]

By cutting the concrete surface horizontally with a disc brush first, and then vertically cutting or wiping with a cylindrical brush, surely carve out the leitance over the entire concrete surface, and inhale it with the front squeegee and the rear squeegee. By doing so, it is automatically fed and stored in a predetermined vacuum tank. Further, since the cleaning water is sprayed at the time of the above cutting or wiping with the cylindrical brush, the concrete surface is automatically cleaned at the same time as the removal of the leitance.

【Example】

Hereinafter, examples of the present invention will be described in detail. Reference numeral 1 denotes a machine frame having front wheels 2 and rear wheels 3, which travels by driving the front wheels 2. A is a front leitance processing device mounted on the front side of the machine casing 1,
B is a rear latance processing device mounted on the rear side of the machine casing 1. The structure of the front latance processing device A is as follows. Reference numerals 4 ₁ to 4 ₄ are four parallel links vertically and horizontally having a base end pivotally supported by left and right brackets 5 ₁ and 5 ₂ of the machine frame 1. 6 is a rail which is parallel to the front and rear sides of the lower surface and opens inward
Suspended board provided with 7,7 ', 8,8' are horizontal members on the left and right sides which are laid down on the upper surface of the suspended board 6, and columns are erected on 9 ', 1
Reference numerals 0 and 10 'are reinforcing members obliquely provided between the columns 8 and 8'and the front horizontal member 9', and 11 _{1 to} 11 ₄ are connecting plates attached to both left and right sides of the columns 8 and 8 '. Each of the connecting plates 11 _{1 to} 11 ₄ has a wide vertical hole 12 on the upper side and a narrow vertical hole 13 on the lower side, and the vertical holes of the connecting plates 11 _{1 to} 11 ₄ . Parallel link to 12 and 13
The relatively long shaft rods 14 _{1 to} 14 ₄ mounted on the ends of 4 ₁ to 4 ₄ are attached to the ends of these parallel links 4 ₁ to 4 ₄ by the suspension board 6
Are inserted in such a relationship that they have relative degrees of freedom for vertical movement, forward / backward rotation, and left / right rotation. That is, lowering the substrate 6 suspended, to the distal end of the parallel link ₄₁ to _4, it is possible to relatively move up and down within the length of the elongated holes 12 and 13 (height), the bottom of the longitudinal hole Axle inserted in 13
14 ₂ and 14 ₄ can be relatively rotated back and forth within the width of the upper vertical hole 12 with the fulcrum as the fulcrum, and further, both end surfaces of the parallel links 4 ₁ to _{4 4 and} the inner surfaces of the connecting plates 11 _{1 to} 11 ₄ can be rotated. It is also possible to relatively rotate left and right within the range of the gap between and (Figs. 6 and 7). Reference numeral 15 denotes a base end of which is rotatably supported on the machine frame 1 and a tip of a piston rod 15 ′ is laterally mounted between columns 8 and 8 ′ to provide a horizontal rod 8 ″.
The at axially supported by the hydraulic cylinder, made in the manner or can down or pulled through the lower substrate 6 a parallel link ₄₁ to ₄ suspended by the operation of the hydraulic cylinder 15. Reference numeral 16 is a brush mounting substrate, which is suspended and mounted on the suspension substrate 6 by engaging sliders 17 and 17 'standing upright on the upper surface to the rails 7 and 7', and for sliding fixed on the front side. The sprocket 19 of the hydraulic motor 18 is meshed with a chain rack 20 stretched over the entire surface of the suspension board 6. Therefore, the brush mounting board 16 slides to the left and right with respect to the suspension board 6 based on the drive of the sliding hydraulic motor 18, and the left and right amplitudes thereof correspond to the width of the machine frame 1 (first). (Fig. 5). Numerals 21 to 23 are disk-shaped brushes rotatably supported on the left and right sides and the center of the lower surface of the brush mounting substrate 16, and have a doughnut-shaped plate with an outer diameter of about φ320 mm and an inner diameter of about φ150 mm with a diameter of 0.4 to 0.8 and a length of about 50 mm. A large number of steel wires are densely planted. Reference numeral 24 denotes a brush rotation hydraulic motor fixed to the rear side of the base plate 16, and a drive chain 31 is wound around the sprockets 25 to 28 and the turning sprocket 29, 30 to provide a brush rotation hydraulic pressure. The disk-shaped brushes 21 to 23 are simultaneously rotated by the motor 24, for example, in the direction of the arrow in FIG. The support of the disk-shaped brushes 21 to 23 to the brush mounting substrate 16 is performed as follows. Reference numeral 32 denotes a shaft fixedly established on each sprocket 26 to 28, and each sprocket 26 to 28 is rotatably supported on the lower surface of the brush mounting substrate 16 via a required bearing 33 via the shaft 32. 34 is a brush flange to which the disk-shaped brushes 21 to 23 are detachably attached. Bolts 36 are inserted through the three through holes 35 provided at the positions corresponding to the corners of the equilateral triangle of the brush flange 34. Together with the collar 37 fitted to the bolt 36, the sprocket 26 to 28 are projected upward through the three through holes 38 provided at the positions corresponding to the respective corners of the equilateral triangle. Reference numeral 41 is a coil spring fitted to a portion of the collar 37 protruding above the sprockets 26 to 28, which is interposed between the washer 40 which is in contact with the nut 39 on the upper surface of the collar 37 and the upper surfaces of the sprockets 26 to 28. However, the disk-shaped brushes 21 to 23 act so as to be pulled up toward the brush flange 34. Reference numeral 42 denotes a spherical body fitted to the protruding shaft 43 on the lower surface of the sprockets 26 to 28.The spherical body 42 and the spherical bearing seat 44 on the upper surface of the brush flange 34 are in an elastic state by the action of the coil spring 41. There is. Therefore, when the lower surface of each of the disk-shaped brushes 21 to 23 comes into contact with the sloped portion S of the concrete surface, the disk-shaped brushes 21 to 23 follow the inclination and freely tilt with respect to the sprockets 26 to 28, and thus also to the brush mounting substrate 16. It is possible (Fig. 8). Reference numeral 45 is a front squeegee formed by vertically arranging a front plate 47 and a rear blade 48 on the lower surface of an arc-shaped top plate 46, which is movable up and down via parallel links 49 ₁ to 49 ₄ behind the brush mounting substrate 16. It is installed. That is, the parallel links 49 whose base ends are axially supported by the brackets 50 ₁ and 50 ₂ mounted on the rear side edge of the brush mounting substrate 16.
₁ the mounting plate 51 pivotally supported on to 49 ₄ of the tip, more to the mounting plate 51 to connect the front Sukyuji 45, said front Sukyuji 45 than anything that could be vertically movable relative to the brush mounting substrate 16 Normally, it is supported in its lowered state by its own weight. Since the upper left and right 49 ₁ and 49 _{3 in} the parallel link are in the turnbuckle type, the front and rear inclination of the front squeegee 45 is adjusted by expanding and contracting them, and the concrete of the front blade 47 and the rear blade 48 is adjusted. The distance between the surfaces and the state of contact can be arbitrarily set to the most suitable ones. Reference numeral 52 denotes an elbow-shaped connecting piece whose lower end is fixed to the center of the top plate 46 of the front squeegee 45, and the upper end is rotatably inserted into the mounting hole 53 of the mounting plate 51, whereby the front squeegee 45
Can also be rotated left and right around the elbow-shaped connecting piece 52. Reference numeral 54 denotes a vacuum hose connection port installed at the center of the top plate 46, which is opened between the front blade 47 and the rear blade 48. Reference character a is a suspension spring stretched between the machine frame 1 and the suspension board 6, and the stroke is manually adjusted at the upper end portion locked to the machine frame 1.
It controls the ground load of 21-23. The configuration of the front latance processing device A is as described above, and it is pulled up by the hydraulic cylinder 15 when not in use, but when it is used to perform the latance processing work, the hydraulic cylinder 15 is in a free state. As a result, the disk-shaped brushes 21 to 23 can be lowered to the place where they are grounded on the concrete surface (Figs. 1 and 3). As described above, the load at the time of grounding can be controlled by the suspension spring a. The disk-shaped brushes 21 to 23 are replaced by a hydraulic motor 24 for rotating the brush.
When the machine of the present invention is moved forward while horizontally rotating at, the concrete surface is horizontally cut by the disk-shaped brushes 21 to 23, and the carved latance is sucked into the front squeegee 45, and vacuumed from the vacuum hose connection port 54. It is fed and stored in the tank 55. In this case, when there is a large swell on the concrete surface, the length (height) of the vertical holes 12 and 13 of the connecting plates 11 _{1 to} 11 ₄
And within the width, and the connecting plates 11 _{1 to} 11 ₄ and the parallel links 4 ₁ to
4 within the gap between the _4, in yet a parallel link ₄₁ to ₄ range of rotation of itself, and the entire front Reitansu processing apparatus A moves up and down and back and forth horizontally rotating, disc-shaped brush 21 to 23 Always follows the large swell of the concrete surface (see FIGS. 6 and 7). Further, when the concrete surface has small unevenness corresponding to each of the disk-shaped brushes 21 to 23, the disk-shaped brush appropriately expands and contracts the coil spring 41 and follows the inclined portion S formed by the unevenness. Also tilts in the direction of (8th
See figure). The front squeegee 45 is attached to the brush mounting board 16 as described above.
Since it is movable up and down and is normally supported by its own weight in a lowered state, when the disk-shaped brushes 21-23 are grounded on the concrete surface, the rear blade 48 is
It is designed to be grounded and to follow the unevenness of the concrete surface by independently moving up and down and turning left and right as described above. These can be adjusted and set as appropriate by the parallel links 49 ₁ and 49 ₃ . As a result, the laitance on the concrete pouring surface is almost completely removed by cutting. Next, the configuration of the backward latance processing device B is as follows. Reference numeral 56 is a brush mounting frame, 57 is a cylindrical brush mounted on the brush mounting frame 56, and is made by densely implanting a nylon thread having a diameter of 2 mm and a length of about 125 mm in a steel pipe having an outer diameter of 48.6. Reference numeral 58 is a brush rotating hydraulic motor for rotating the cylindrical brush 57. The brush mounting frame 56 is rotatably mounted on the machine frame 1 by pivotally supporting an auxiliary frame 59 projecting from the brush mounting frame body 56 with a horizontal shaft rod 60. The auxiliary frame 59 and the machine frame 1 face each other. The piston rod 61 ′ of the hydraulic cylinder 61 installed between the parts is vertically rotated in response to the expansion and contraction of the piston rod 61 ′, and when the cylindrical brush 57 is not in use, it is pulled up, and when the rattans treatment work is performed, concrete brush 57 is used. Lower it to where it touches the surface (Fig. 1). Reference numeral 62 denotes a rear squeegee formed by vertically arranging a front blade 64 and a rear blade 65 on the lower surface of an arc-shaped top plate 63, which is provided on the rear side of the machine casing ₁ via parallel links 66 ₁ and 66 _2. It is mounted so that it can move up and down. That is, the bracket attached to the rear side edge of the machine casing 1.
A mounting frame 68 is pivotally supported at the tips of the parallel links 66 ₁ and 66 ₂ whose base ends are pivotally supported by 67 ₁ and 67 ₂ , and a rear skewage 62 is connected to the mounting frame 68. Is movable up and down with respect to the machine casing 1. 69 is a base end bent to the machine frame 1 above the brackets 67 ₁ and 67 ₂
A lever member that rotatably supports 69 ₁ and a pin 69 _{2 at} its tip.
The lower end of the connecting rod 71, which is hung down by fitting the vertically long hole 70 therein, and the upper end of the mounting frame 68 are axially connected. Reference numeral 72 denotes a connecting rod, _one end of which is pivotally attached to the auxiliary frame 59 and the other end of which is pivotally attached to the bent base end 69 ₁ of the lever member 69. Therefore, the rear squeegee 62 moves up and down as the brush mounting frame 56 is rotated up and down by the hydraulic cylinder 61, and is positioned similarly upward when the cylindrical brush 57 is pulled up and is not in use. , Cylindrical brush 57
When the product is in use when it is dropped to the place where it touches the concrete surface, it will drop to the place where it touches the concrete surface in the same manner. The parallel link 66 _1, so are the turnbuckles format, which of the front and rear of the rear Sukyuji 62 by stretching the tilt by adjusting the degree, spacing and contact with the concrete surface of the front blade 64 and rear blade 65 of the state Can be arbitrarily set to the most appropriate one. 73 is an elbow-shaped connecting piece whose lower end is fixed to the center of the arc-shaped top plate 63 of the rear skewer 62, and the upper end is a mounting hole for the mounting frame 68.
By being rotatably inserted in the 74, the rear squeegee 62 can be rotated left and right around the elbow-shaped connecting piece 73. Reference numeral 75 denotes a vacuum hose connection port installed in the center of the top plate 63, which is opened between the front blade 64 and the rear blade 65. Reference numeral 76 denotes a water sprinkling pipe horizontally laid in an upper space between the cylindrical brush 57 and the rear squeegee 62, which is connected to a water tank 77 mounted on the machine casing 1 by a pipe, and a high pressure pump 79 sprays pressure water to a nozzle 76. Water from ' The configuration of the rear leitance processing device B is as described above, and it is pulled up above the concrete surface by the hydraulic cylinder 61 when not in use, but when it is used for performing the leitance processing work, the cylindrical brush 57 and the rear portion are used. The squeegee 62 is lowered to the place where it comes into contact with the concrete surface (FIG. 1), the cylindrical brush 57 is rotated by the brush rotating hydraulic motor 58, and the sprinkling nozzle 76 'is rotated.
By spraying water from the above to wash the concrete surface and advancing the machine of the present invention, the cylindrical brush 57 is left behind due to the fact that the laitance is thick in spite of the above treatment by the forward leitance treatment device A. And the recessed part are cut from the vertical direction, and while wiping the concrete surface, the sludge-like leitance generated there is washed with the cleaning water sprinkled to the rear squeegee 62. To the vacuum tank 78 through the vacuum hose connection port 75 and stored. In this case, the rear squeegee 62 is rotatable left and right with respect to the mounting frame 68 as described above, and the connecting rod 71 whose lower end is axially connected to the mounting frame 68 is freely moved up and down within the range of the vertically elongated hole 70. Therefore, it can move up and down independently and follow left and right with respect to the unevenness of the concrete surface, and the inclination of the front and rear of this rear skewer 62 can be appropriately adjusted and set by the parallel link 66 ₁ . Is. In this way, the finishing process of the leitance of the concrete surface can be efficiently carried out. In the figure, 80 is a vacuum pump, 81 is a generator, and 82 is a hydraulic unit, both of which are mounted on the machine casing 1.

【The invention's effect】

With the machine of the present invention, the following effects can be obtained. The concrete surface is cut horizontally with a disc-shaped brush and vertically cut or wiped with a cylindrical brush.Therefore, even if the concrete surface has large undulations or small irregularities, it is possible to reliably cut the laitance over the entire area. Can be issued. By sucking the cut out latance by the front squeegee and the rear squeegee, it is possible to automatically feed and store it in a predetermined vacuum tank. Further, since the cleaning water is sprayed by the cylindrical brush at the time of the above cutting or wiping and the water is sucked by the rear squeegee, the concrete surface can be removed at the same time and the predetermined cleaning. By self-propelled, it is possible to easily remove laitance and perform predetermined cleaning. Unlike conventional manual work, grasping the finish status is not only based on intuition and experience, but it is also possible to automatically perform preset cutting, and there is no risk of over-cutting or uncut areas. Therefore, it is possible to obtain a proper finished surface without unevenness.

[Brief description of drawings]

The drawings show an embodiment of the machine of the present invention. Fig. 1 is a schematic side view, Fig. 2 is a plan view of the same, Fig. 3 is a side view of a main part of a front latance processing device, and Fig. 4 is a plan view of the same. 5 and FIG. 5 are plan views showing the left and right sliding range of the brush mounting substrate, and FIGS. 6 and 7 are vertical movements, front and rear movements of the front latance processing device.
A rear view and a side view of the parallel link mechanism portion for explaining the state of right and left rotation, FIGS. 8 and 9 are a side view and an exploded perspective view of a disk-shaped brush attached state, and FIG. 10 is a front squeegee. FIG. 11 is a perspective view of a mounted state, FIG. 11 is a bottom view of the front squeegee, FIGS. 12 and 13 are cross-sectional views of main portions of the front squeegee, and FIG. 14 is a front view of the cylindrical brush in a mounted state. First
FIG. 15 is a side view of the rotating portion of the mounting frame of the cylindrical brush, and FIG. 16 is a perspective view of the state in which the rear skewers are mounted. 21-23 …… Disc-shaped brush, 45 …… Front squeegee, 55…
… Vacuum tank, 57 …… Cylindrical brush, 62 …… Rear squeegee, 78 …… Vacuum tank, 1 …… Machine frame, A
...... Front leitance treatment device, B …… Rear leitance treatment device, 76 ′ …… Sprinkling nozzle.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eisuke Numaguchi 2 Sanbancho, Chiyoda-ku, Tokyo Inside Tobishima Construction Co., Ltd. (56) Reference JP 62-164965 (JP, A) Jpn. A microfilm (JP, U) of the contents and drawings attached to the application for No. 119340 (No. Sho 64-23545)

Claims (1)

[Claims] 1. A front brush of a self-propelled machine frame is mounted with a front latance processing device and a rear side thereof is mounted with a rear latance processing device, and the front latance processing device is a disk-shaped brush for horizontally cutting a concrete surface. And a front squeegee that is installed behind it and draws in and inhales the cutting reitance.The rear reitance processing device is installed behind the cylindrical brush that vertically cuts or wipes the concrete surface, the nozzle that sprays the cleaning water, and the rear of it. The machine frame consists of cutting latencies and a rear squeegee that draws in and inhales the sprayed cleaning water, and the machine frame has two vacuum tanks respectively connected to the front squeegee and the rear squeegee or one squeegee connected to both squeegees. A laitance removal machine that is equipped with a vacuum tank.