JP2000273902A - Cleaning device for concrete end face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning device for a concrete end face capable of being easily diverted and simply carrying out exchanging work. SOLUTION: When the cutting of a concrete end face 14 is completed, a cleaning device 10 is provided to a rotary drum 12, and a cake of mud adhered to the end face 14 is raked out by the cleaning device. The cleaning device 10 is equipped with a brush holder 26 and a cleaning brush 34. The brush holder 26 holding the cleaning brush 34 in a detachable manner includes a mounting base 28, a holding plate 30 and a plurality of fixed plates 32. The mounting base 28 is formed in the same form as that of the mounting base of cutting teeth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning an end face of a concrete, and more particularly to a cleaning apparatus used for cleaning an end face after cutting an underground continuous wall.

[0002]

2. Description of the Related Art When constructing an underground structure, an underground continuous wall is sometimes used as an earth retaining wall, a foundation frame, or the like. The construction method of the underground diaphragm wall is to excavate a groove-shaped excavation groove from the surface side,
The basic configuration is to form a panel-shaped unit wall by casting concrete after the reinforcing cage is built in the excavated trench.

In this type of underground continuous wall construction method, the joining structure between the leading and trailing panels includes, for example,
There are types such as rigid connection, hinge connection, and free connection, and they are appropriately selected according to the purpose of use of the underground continuous wall.

[0004] Of these joining structures, free joining is
This is a method in which the joining end face of the preceding panel is cut and the succeeding panel is joined, and the end face of the preceding panel is usually cut with a cutter tooth using an excavator provided with a rotating drum that is driven to rotate at the lower end. While excavating with the ground, a succeeding panel is formed.

[0005] In the free joining performed in this manner, if the concrete end face of the cut preceding panel is not cleaned, there is a concern that the water stopping property of the joined portion may be reduced due to the mud cake adhered to the cutting face.

Therefore, conventionally, a mud cake has been scraped off by attaching a wire brush or the like to a rotating drum or a body frame of an excavator and rotating the drum or moving the body frame up and down.

[0007] However, such conventional means for cleaning a concrete end face has the following technical problems.

[0008]

That is, in the cleaning means using a wire brush, once the wire brush is used, the wire brush is greatly deformed and the restoring force is poor, so that the wire brush remains deformed. Is difficult to scrape off.

Further, since the wire brush has poor restorability, it is difficult to convert the wire brush as it is, and there is a problem that the replacement operation requires time and labor.

The present invention has been made in view of such conventional problems, and an object of the present invention is to clean a concrete end face which can be easily diverted and can be easily replaced. It is to provide a device.

[0011]

To achieve the above object, the present invention provides an excavator body frame suspended and supported, and a rotary drum rotatably driven at a lower end of the excavator body frame. A cleaning device used for an excavator for cutting a concrete end surface, comprising: a mounting base detachably fitted and fixed to a tooth holder of the rotating drum; a brush holder mounted on the mounting base; A cleaning brush having abrasion resistance and resilience sandwiched as possible. According to the concrete end face cleaning device configured as described above, the mounting base detachably fitted to and fixed to the tooth holder of the rotating drum, the brush holder mounted on the mounting base, and the brush holder removably sandwiched. It has a cleaning brush with abrasion resistance and restorability, so the mounting base is fitted and fixed to the tooth holder with the cutter teeth detached, and the rotating drum is rotated. The cake can be scraped off with a cleaning brush. At this time, since the cleaning brush has abrasion resistance and resilience, it does not remain deformed and can be diverted a plurality of times. The brush holder extends so as to be orthogonal to the rotation direction of the rotary drum, and has a substantially arc-shaped holding plate having a predetermined width fixed to the mounting base, and a center portion of the holding plate and a center portion thereof. A plurality of fixing plates respectively fixed to both sides by bolts, wherein the cleaning brush is a short cleaning brush arranged at a center portion of the holding plate, and a long cleaning brush is arranged at both side portions of the holding plate. And a brush. According to this configuration, since the cleaning brush has the short cleaning brush arranged at the center of the holding plate and the long cleaning brush arranged on both sides of the holding plate, the same material is used. Even if the brush is used, since the rigidity and the restoring force are different, the removal efficiency of the mud cake increases.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of a concrete edge cleaning apparatus according to the present invention.

As shown in FIG. 1, the cleaning apparatus 10 of the present invention includes an excavator body frame 11 suspended and supported, and a rotary drum 12 rotatably driven at a lower end of the excavator body frame 11. It is used for the excavator 16 for cutting the concrete end face 14.

The excavator 16 is a so-called hydrophrase excavator, and as shown in FIG.
A pair of rotary drums 12 are provided at the lower ends of the pair to face each other.

When forming an underground continuous wall, as shown in FIG. 1A, first, after forming a leading panel 18, the end face 14 of the leading panel 18 is attached to the outer peripheral surface of the rotating drum 12. The cutting teeth 22 are mounted on the provided tooth holder 20, and cutting is performed.

As shown in detail in FIG. 3, the cutting tooth 22 has a blade portion 22a provided on the distal end side and a flat mounting base 22b formed integrally with the blade portion 22a. Provided, mounting base 22b
Is formed with a notch 22c.

The tooth holder 20 is mounted on a holder mounting plate 24 protrudingly fixed on the outer peripheral surface of the rotary drum 12, and has a mounting base 22 of the cutter tooth 22.
A groove 20a into which the b can be inserted and a through hole 20b are provided.

The cutter teeth 20 are attached to a mounting base 22.
b is inserted into the groove 20a of the tooth holder 20, and the knock pin that passes through the concave portion 22c is inserted into the through hole 20b to be fixed.

When the cutting teeth 22 are mounted on the tooth holder 20 and the cutting of the concrete end surface 14 is completed, as shown in FIG.
2, the cleaning device 10 of the present invention is mounted, and the mud cake adhering to the end face 14 is scraped off.

The details of the cleaning device 10 are shown in FIGS. The cleaning device 10 shown in these figures includes a brush holder 26 and a cleaning brush 34. The brush holder 26 detachably holds the cleaning brush 34, and includes a mounting base 28 and a holding plate 30.
And a plurality of fixing plates 32.

The mounting base 28 is formed in exactly the same shape as the mounting base 22b of the cutting tooth 22, and similarly to the mounting base 22b, a semicircular concave portion 29 is cut out.

The holding plate 30 is formed of a flat plate having a predetermined width bent in a substantially arc shape, and is mounted so that the mounting base 28 extends downward from the lower surface side of the flat central portion. It is erected and fixed to the upper end side of the base 28 by welding.

The fixing plate 32 is composed of a central portion of the holding plate 30 and a total of three plates fixed to both sides thereof by bolting.

The cleaning brush 34 is made of a steel material or a synthetic resin having abrasion resistance and resilience. In the case of the present embodiment, the cleaning brush 34 is disposed at the center of the holding plate 30. 34a, and a pair of long cleaning brushes 34b disposed on both side portions thereof.

Each of the cleaning brushes 34 has a predetermined length and is arranged to have a predetermined thickness, and a lower end of the cleaning brushes 34 is bound by a binding material 35 such as a lead plate. The fixing plate 32 is fixed to the holding plate 30 with bolts so as to be held between the plates 30 and 32.

Then, as shown in FIG. 6, the mounting base 28 of the cleaning device 10 is inserted into the tooth holder 20 from which the cutting teeth 22 have been detached, and fixed by knock pins.

At the time of this replacement, the mounting base 22
Since the b and the mounting base 28 are shared, it can be easily performed, and when the replacement work is completed, the main body frame 11 is moved up and down while rotating the rotary drum 12 as shown in FIG. Thus, the cleaning brush 34 is brought into contact with the end face 14 to scrape off the adhering mud cake.

In this case, when the cleaning device 10 is mounted, as shown in FIG. 7, the longitudinal direction of the holding plate 30 is orthogonal to the rotating direction of the rotating drum 12 and the rotating drum 1
Cleaning brush 3 adjacent in a direction perpendicular to the rotation direction of the cleaning brush 3
It is desirable to set such that a part of 4 is overlapped with each other, and by mounting in this way, it is possible to prevent generation of an uncleaned portion by the cleaning brush 34.

Now, the cleaning device 10 constructed as described above.
According to this, the cleaning brush 34 has abrasion resistance and resilience, so that the cleaning brush 34 does not remain deformed and can be diverted a plurality of times.

In this embodiment, the brush holder 26 extends substantially perpendicularly to the rotating direction of the rotary drum 12 and has a substantially C-shape having a predetermined width fixed upright on the mounting base 28. A holding plate 30 having a shape, a plurality of fixing plates 32 bolted to a central portion of the holding plate 30 and both sides thereof, respectively, and the cleaning brush 34
Since it has the short cleaning brush 34a arranged at the center of the holding plate 30 and the long cleaning brush 34b arranged at both sides of the holding plate 30, even if brushes of the same material are used, Since the rigidity and the restoring force are different, the effect of removing the mud cake can be increased.

[0031]

As described above in detail in the embodiments,
According to the concrete edge cleaning device of the present invention,
It can be easily diverted, and replacement work can be easily performed.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a concrete end face cutting step performed before using a cleaning apparatus according to the present invention and an end face cleaning step using a cleaning apparatus.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is an enlarged side view of the cleaning device shown in FIG.

FIG. 5 is a sectional view of FIG. 4;

FIG. 6 is an explanatory diagram of a mounting method of the cleaning device shown in FIG.

FIG. 7 is an explanatory view of a mounted state of the cleaning device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cleaning device 11 Main body frame 12 Rotary drum 14 Concrete end surface 16 Excavator 18 Leading panel 20 Teeth holder 22 Cutting teeth 24 Holder mounting plate 26 Brush holder 28 Mounting base 30 Holding plate 32 Fixed plate 34 Cleaning brush

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Satoru Kudo 1-10-4, Minamidai, Kawagoe-shi, Saitama F-term in Obayashi Corporation Tokyo Machinery Factory (reference) 2D049 GA06 3B116 AA31 AB51 BA02 BA14 BA33

Claims (2)

[Claims] 1. A cleaning device used for a cutting excavator for cutting a concrete end face provided with an excavator body frame suspended and supported, and a rotating drum rotatably driven at a lower end of the excavator body frame, A mounting base detachably fitted to and fixed to a tooth holder of the rotating drum; a brush holder mounted on the mounting base; and abrasion resistance and restorability removably sandwiched by the brush holder. A cleaning device for a concrete end face, comprising a cleaning brush. 2. The holding device according to claim 2, wherein the brush holder extends in a direction perpendicular to the rotation direction of the rotary drum, and has a substantially arc-shaped holding plate having a predetermined width and fixed to the mounting base. And a plurality of fixing plates respectively bolted to both sides thereof, wherein the cleaning brush is disposed at a central portion of the holding plate, and a short cleaning brush is disposed at both sides of the holding plate. The cleaning device for a concrete end face according to claim 1, further comprising a long cleaning brush that is provided.