JPH08232474A - Muck recoverer of green-cut surface - Google Patents

Abstract

PURPOSE: To prevent any scattering of water in and around a suction nozzle as well as to enable it to improve a muck recovering capacity so sharply by recovering a muck formed on a green-cut surface by means of jointing surface processing operations in time of mass concrete placing. CONSTITUTION: A suction device 27 is operated as traveling an undercarriage 1, and pressure water is fed to a water injection nozzle, separating a muck on a green-cut surface 11 in a suction nozzle 12. In this case, the muck is separated by dint of rotation of a rotary brush 18 and injection water out of the injection nozzle, and it is sucked in together with water from a suction port and automatically housed in a receiver tank 24 by way of a muck conveyor. At that time, an outer boundary of the suction nozzle 12 is covered with a cover 9, preventing any scattering of water around the circumference from occurring. In addition, a degree of closure in the suction nozzle 12 is enhanced by means of sliding contact with the green-cut surface 11 owing to a skid 16 of an opening part circumferential edge, whereby the muck is separated by dint of a rotation of the rotary brush 18 and injection water and thus it is drawn by suction. With this constitution, all operations ranging from muck separation to muck gathering and its storage are performed at the same time as in automation, so a reduction in the number of operators and an improvement in execution capacity are all improvable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for recovering misalignment of a green cut surface, and in particular, a scrap produced on the surface by a connecting surface processing operation (green cutting operation) at the time of pouring mass concrete such as a concrete dam. It relates to a scrap recovery device for a green-cut surface that recovers leitance floating on the concrete surface and scraped off weak-layer mortar).

[0002]

2. Description of the Related Art Conventionally, as this type of scrap collecting device,
The one described in JP-A-6-26024 is known. This scrap collecting device is attached to the front part of the chassis,
The boom extends forward and is attached to the tip of the boom so that it can follow the green cut surface while maintaining a required distance, and the width becomes wider from the front to the rear in the moving direction, and the lower and rear sides. A suction nozzle that is formed in the shape of a trapezoidal box that is open toward one side and that has a suction port at the front upper part, and a plurality of water that are attached to the rear part inside the suction nozzle and that spray water toward the green cut surface toward the suction port. An injection nozzle, a pressure water supply means for supplying pressure water to each water injection nozzle, a receiver tank that is mounted on the chassis and stores the gap and water sucked from the suction nozzle, and a receiver tank that is mounted on the chassis and used as a receiver tank. It is provided with a slippery device and a suction device for making a negative pressure therein for inhaling water. Then, while moving the chassis, by operating the suction device, and by supplying the pressure water from the pressure water supply means to each water injection nozzle, the deviation on the green cut surface in the suction nozzle from each water injection nozzle It is peeled off by the sprayed water, gathered in the vicinity of the suction port, and is automatically stored in the receiver tank from the suction port together with water.

[0003]

However, in the conventional device for recovering deviations of the green cut surface, since the lower periphery of the suction nozzle is opened relatively large, water is scattered around the suction nozzle, while the suction nozzle is Has a problem that the workability of scraping is low, the work recovery capability is low at a maximum of 80 m ² / h, and the step is more than double compared to the conventional manual work (work for collecting and removing the green cut surface). Therefore, an object of the present invention is to provide a deviation collecting device for a green cut surface, which can prevent water from scattering around the suction nozzle and can significantly improve the deviation collecting ability.

[0004]

In order to solve the above-mentioned problems, a first green-cut surface shear recovery device of the present invention is attached to a front part of a chassis and has a boom extending forward and a tip part of the boom. A box-shaped cover with a downward opening that can be run on the green cut surface, and a box with a downward opening that is hung inside the cover via a link so that it can be moved up and down and is connected via a towing arm. While having a suction port on the front upper part, it is attached to the suction nozzle that slides in contact with the green cut surface by a skid provided on the peripheral edge of the opening and the rear side part inside the suction nozzle, and water is applied to the green cut surface toward the front side. A plurality of water jet nozzles for jetting, pressure water supply means for supplying pressure water to each water jet nozzle, a receiver tank mounted on the chassis for accommodating the slip and water sucked from the suction nozzle, and the chassis It is mounted, characterized in that it comprises a suction device and a negative pressure therein for sucking muck and water to the receiver tank. The second green-cut surface misalignment recovery device is characterized in that, in the first one, a horizontal rotary brush for cleaning the green-cut surface is attached to the front part inside the suction nozzle.

[0005]

In the first device for collecting the deviation of the green cut surface of the present invention, the periphery of the suction nozzle is covered with the cover, and the sealing degree of the suction nozzle is different from that of the green cut surface by skid around the opening. Increased by sliding contact. Further, in the second green-cut surface deviation collecting device, in addition to the function of the first one, the deviation adhered to the green-cut surface is peeled off by the rotation of the rotary brush.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1, FIG. 2, FIG. 3 and FIG. 4 are a left side view, a plan view, a front view and a right side view with a part omitted showing an embodiment of the device for recovering misalignment of a green cut surface of the present invention. At the center of the front part of the crawler type chassis 1, there is a base end part of a rectangular extension boom 2 which can be expanded and contracted by a built-in extension cylinder (not shown).
The extension boom 2 is connected by a vertical pin and a horizontal pin (both not shown), and the extension boom 2 includes a boom swing cylinder 3 interposed between one side surface of the extension boom 2 and the front center of the chassis 1, and the upper surface and the chassis. By the boom lift cylinder 4 interposed between the center of the front part of 1 and the front end of the boom lift cylinder 4, the tip part has an angle range of about 40 ° (right
The angle is 20 °) and the left is 20 °), and the vertical range is swingable in the angular range of about 90 ° (elevation angle 80 °, depression angle 10 °).

At the tip of the extension boom 3,
An oval table holder 5 is attached by a horizontal pin 6, and the table holder 5 is centered on the pin 6 by a nozzle swing cylinder 7 interposed between the tip of the extension boom 2 and the table holder 5. It is provided so that it can swing. A swivel table 8 is provided below the table holder 5 so as to swivel in a range of about 135 ° about a vertical axis by a nozzle swivel hydraulic motor (not shown).

As shown in detail in FIGS. 5 and 6, a box-shaped cover 9 having a downward opening is attached to the lower portion of the swivel table 8, and the cover 9 is attached to the four corners inside thereof. The four rotary casters 10 are provided so that the peripheral edge of the opening can be moved while maintaining the required distance (for example, 5 to 10 cm) from the uncut green cut surface 11. Inside the cover 9, a suction nozzle 12 in the form of a box that opens downward is suspended movably up and down via two pairs of loosely provided links 13 provided in the middle, and a plurality of tractions are provided. It is connected via the arm 14. The suction nozzle 12 sucks the gap on the green cut surface 11 together with water by the operation of the suction device described later.
A rectangular suction port 15 is provided in the upper central part (ceiling part) on the front side (right side in FIGS. 5 and 6), while a green cut surface 11 is formed by a skid 16 formed of a metal pipe or the like on the periphery of the opening. Is in sliding contact with. Suction nozzle 12
To increase the wear resistance of the skid 16 on both outer sides of
Four fixed casters 17 are attached. On the other hand, in the suction nozzle 12, a horizontal rotary brush 18 for cleaning the green cut surface 11 is mounted in the vicinity of the front side of the suction port 15, and the rotary brush 18 is mounted on the upper part of the suction nozzle 12. The hydraulic motor 19 is linked to the hydraulic motor 19 and is rotatably provided according to the traveling speed of the chassis 1. Further, a plurality of water jet nozzles 20 for jetting water toward the front side are attached to the rear side portion of the suction nozzle 12 and are separated by the jet water from these water jet nozzles 20. The guide plate 21 that guides the gap and the jetted water that are moved to the front side to the suction port 15 is attached to the inner surface of the ceiling portion. Each water jet nozzle 20 is connected to a pressure water supply means for supplying pressure water of 5 to 10 kg / cm ² with a flexible hose (both not shown).

One end of a flexible shear transfer hose 22 (see FIGS. 5 and 6) is connected to the suction port 15 of the suction nozzle 12, and the other end of the slip transport hose 22 is connected to the chassis 1
Equipped with a slide transfer pipe 23 (Fig.
(See) is connected to one end. As shown in FIGS. 1 and 2, the other end of the slip transport pipe 23 is switchably connected to two receiver tanks 24 mounted on the rear portion of the chassis 1. Each of the receiver tanks 24 accommodates the slip and water sucked from the suction nozzle 12, and is provided so as to be individually movable to the upper rear of the chassis 1 by a tank slide cylinder (not shown) mounted on the chassis 1. In addition, a lower slide gate 25 is provided so as to be openable and closable by a gate opening / closing cylinder (not shown), and a drain pipe 26 for discharging the stored water is attached to the rear side portion. Each receiver tank 24 is mounted on the front side of the chassis 1 and sucks the slip and water into the receiver tank 24 by a high-speed air flow (air volume 54 m ³ / mm, transport amount m).
ax, 9m ³ / Hr) so that the inside of the chamber is negative pressure (static pressure -65
Roots blower suction device 27
Is connected so that it can be switched and connected. In FIGS. 1 to 4, 28 is an operator's cab and 29 is an engine room.

In the device for collecting deviations of the green cut surface having the above structure, while the chassis 1 is running, the suction device 27 is operated and the pressure water is supplied from the pressure water supply means to the respective water jet nozzles 20. By operating the motor 19, the gap on the green cut surface 11 in the suction nozzle 12 is first separated by the rotation of the rotary brush 18 and the water jetted from each water jet nozzle 20, and the front side is jetted by the jet water. To the suction port 15 and is sucked together with water from the suction port 15 by the guide plate 21.
And, it is automatically accommodated in either one of the receiver tanks 24 via the slide conveying pipe 23. When sucking the above gap,
Since the periphery of the suction nozzle 12 is covered by the cover 9, it was possible to prevent the water splashing from the suction nozzle 12 from splashing around. Further, since the airtightness of the suction nozzle 12 is enhanced by the sliding contact with the green cut surface 11 by the skid 16 at the peripheral edge of the opening, the suction nozzle 12 is separated by the rotation of the rotary brush 18 and the water sprayed from each water spray nozzle 20. As a result, the ability to collect scraps gathered near the suction port 15 was significantly increased to 200 m ² / h. Therefore, the peeling of the slip by the rotating brush 18 and the jet water, the gathering of the slip by the jet water and the like, and the accommodating of the slip in the receiver tank 24 by the suction device 27 are automatically performed at the same time, and the number of workers is greatly increased. In addition to being able to reduce the number, it is possible to significantly improve the construction capacity and productivity. Then, at a constant time interval by a timer, the slidable conveying pipe 23 and the suction device 27 are switched and connected to the other receiver tank 24, and the sludge collection work is performed continuously. The water in the tank 24 is discharged from the drain pipe 26. Then, after the drainage is completed, the tank slide cylinder is operated to move the one receiver tank 24 to the upper rear of the truck 1,
A scrap transport vehicle (not shown) is placed below it, and
The gate opening / closing cylinder is operated to open the slide gate 25 and discharge the misalignment. After that, slide gate 2
5 is closed, and the receiver tank 24 is moved back onto the chassis 1. Hereinafter, the scrap recovery work is continuously performed while alternately using the receiver tanks 24.

In the case of the slip recovery work, when the slip recovery position is near the side of the chassis 1 due to the limitation of the traveling position of the chassis 1, the extension cylinder 2 extends the extension boom 2 and the boom swing cylinder 3 extends the extension. The boom 2 is appropriately swung, and the turning table 8 is driven by a hydraulic motor.
By appropriately turning the suction nozzle 12 in the traveling direction of the chassis 1.
When the green cut surface 11 is inclined, the nozzle swing cylinder 7 swings the suction nozzle 12 in accordance with the inclination to perform the work. The extension boom 2 is appropriately tilted and stored by the boom lift cylinder 4 in order to save space.

[0012]

As described above, according to the first green cut surface misalignment recovery device of the present invention, the periphery of the suction nozzle is covered with the cover, so that the water splashing from the suction nozzle is scattered around. In addition, the airtightness of the suction nozzle can be improved by the sliding contact with the green cut surface by the skid at the peripheral edge of the opening, so that it is separated by the water jetted from each water jet nozzle and near the suction port. It is possible to significantly improve the collection ability of the scraps gathered together in comparison with the conventional one. Further, according to the second green-cut surface deviation collecting device, in addition to the function and effect of the first one, the deviation adhering to the green-cut surface is peeled off by the rotation of the rotary brush, so that the deviation collecting ability is further enhanced. You can

[Brief description of drawings]

FIG. 1 is a left side view showing an embodiment of a deviation collecting device for a green cut surface of the present invention.

FIG. 2 is a plan view of the scrap recovery device of FIG.

3 is a front view of the scrap recovery device of FIG. 1. FIG.

FIG. 4 is a right side view with a part of the scrap recovery device of FIG. 1 omitted.

5 is a side sectional view of a suction nozzle portion in the misalignment recovery device of FIG.

FIG. 6 is a bottom view of the suction nozzle unit of FIG.

[Explanation of symbols]

 1 crawler type chassis 2 extension boom 9 cover 10 rotating caster 11 green cut surface 12 suction nozzle 13 link 14 towing arm 15 suction port 16 skit 20 water injection nozzle 24 receiver tank 27 suction device

Claims (2)

[Claims] 1. A boom which is attached to a front part of a chassis and extends forward, a box-shaped cover having a lower opening which is attached to a tip part of the boom and can travel on a green cut surface, and a link in the cover. It has a box-like shape with a downward opening that is movably hung up and down via a towing arm and has a suction port on the front upper part, while a skid that is slidably in contact with the green cut surface by a skid provided at the periphery of the opening. Nozzles, a plurality of water injection nozzles attached to the rear side of the suction nozzle and injecting water toward the green cut surface toward the front side, pressure water supply means for supplying pressure water to each water injection nozzle, and chassis A receiver tank that is mounted on the vehicle and stores the slip and water sucked from the suction nozzle; and a suction device that is mounted on the chassis and uses a negative pressure to suck the slip and water into the receiver tank. A device for recovering misalignment of a green cut surface, which is provided with. 2. The deviation collecting device for a green cut surface according to claim 1, wherein a horizontal rotary brush for cleaning the green cut surface is attached to a front portion of the suction nozzle.