JP2547505B2 - Bonded steel plate cleaning device for underground wall joints - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel plate cleaning device for a continuous continuous wall joint.

[0002]

2. Description of the Related Art Conventionally, when constructing a continuous underground wall,
First, the guide wall W is installed in advance (FIG. 5). Next, the excavator DM is hung by the base machine (crawler crane in the illustrated example) CC, and the excavation groove D1 is dug down (FIG. 6).

Therefore, after excavating to a predetermined depth, the slime in the excavation groove D1 is sucked up and removed, and the excavation circulating mud used for the excavation is replaced with the good liquid GL (FIG. 7). Next, the crawler crane CC suspends the preceding rebar cage B1 into the excavation groove D through the suspending tool H (FIG. 8). Then, the tremie pipe T is hung by the crawler crane CC (FIG. 9).

Next, a belt conveyor C is connected to the crushing stone hopper SH, the crushed stones S are packed outside the rebar cage B1 to stabilize the rebar cage B1, and the concrete pump P is connected to the tremie pipe T via a flexible hose F. Then, concrete is poured to construct the preceding element E1 (FIG. 13) (FIG. 10).

The construction of the trailing element E2 (FIG. 18) is
First, similarly to FIG. 8, the excavation groove D2 is excavated in the portion between the preceding elements E1 and E1 (FIG. 11).

Next, the joint protection plates DP provided on both sides of the preceding element E1 are pulled out by the crawler crane CC (FIG. 12). The joint protection plate DP is for preventing excavated soil from entering the joint portion of the preceding element and preventing the joint portion of the following element from entering. Then, the winch WM moves the cleaner CM up and down along the end face of the joining steel plate JP of the preceding element E1 to clean the end face (FIG. 13).

Next, the slime in the excavation groove D2 is treated to replace the excavation circulating mud with the good liquid GL (FIG. 14). Therefore, the reinforced cage B2 is built with the crawler crane CC (Fig. 15). Then, similarly to FIG. 9, crushed stones are charged and the tremie pipe T is built (FIG. 16). Then, concrete is poured (Fig. 17).

Finally, grout pump G is used to inject cement milk into the joint (FIG. 18).

In the above embodiment, the crushed stone S in FIG. 10 has the following structure before the rebar cage B2 of the trailing element E2 is installed:
The crushed stone S must be cleaned to ensure the function of the joint. However, the crushed stone S may be self-supporting due to compaction or adhered to the joining steel plate JP by cement milk at the time of placing concrete of the preceding element E1.

A conventional cleaning machine CM shown in FIG. 13 scrapes off crushed stones S and the like at the lower end of a spatula, and crushes the solidified crushed stones by dropping another wedge-shaped steel material (not shown). I am trying to do it.

[0011]

To remove and clean crushed stones, a spatula scraper that scrapes off a relatively soft crushed stone that has not been solidified over a wide area and a falling body that breaks a relatively hard crushed stone that cannot be scraped off by the scraper are used. Two were needed.

Further, since the spatula scraper scrapes off a wide range of crushed stones, it becomes large and heavy.

Further, when the scraper scraper cannot scrape off, it is replaced with a falling body, so that the cleaning efficiency is poor.

An object of the present invention is to provide a jointed steel plate cleaning device for an underground continuous wall joint, which has a high cleaning efficiency and is relatively small and weighing.

[0015]

According to the present invention, a plurality of crushing blades for crushing crushed stones and a plurality of scrapers for scraping crushed stones are provided in a main body guided by the guide H steel of the joined steel plate by the guide means. Is provided.

The guide means preferably comprises a pair of guides for holding the central portion of the guide H steel and is provided at the upper and lower portions of the main body.

[0017]

In the cemented steel plate cleaning device for the underground continuous wall joint configured as described above, the device is guided by the guide H of the cemented steel plate and dropped. Then, first, the crushing blade bites into the crushed stone by its own weight, loosens the compacted self-supporting crushed stone, or causes cracks in the solidified crushed stone. The scraper then scrapes and cleans loose crushed stones or solidified crushed stones with the weight of the device. At this time, if you can not scrape with one drop,
Pull up the device and drop it again to scrape.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 shows the preceding element E1 (FIG. 13).
The joining steel plate JP of the reinforced basket B1 of No. 3 is shown.

On the jointed steel plate JP, a pair of guide H steels 20 are arranged to be distributed from the central portion, and protective angles 21 are respectively provided at both end portions, and an inclinometer square pipe 22 is projected near the central portion. It is set up. Also, the protection angle 21
A joint pipe 23 that engages with a joint arm (not shown) of the trailing element E2 is integrally formed in the vicinity of, and is covered with a joint pipe cover 24. Reference numeral 25 in the drawing is a connecting rod.

1 to 3, the main body 2 of the cleaning device, which is generally designated by reference numeral 1, is formed as a plate body having a rectangular cross section whose width is slightly narrower than the half width of the joining steel plate JP. Above and below the center line of the main body 2, a pair of guides 3 that are guide means for sandwiching the central portion 20a of the guide H steel 20 and guiding the main body 2 are provided in a protruding manner. Individual fishing fittings 4 are provided so as to project.

Further, at the bottom of the main body 2, the first crushing blade 5, the second crushing blade 6, and the third crushing blade are distributed from the center in order from the outside.
A crushing blade 7 and a fourth crushing blade 8 are provided so as to project, and
On the outer side of the crushing blade 5, a pair of corner crushing blades 9 are projected. Then, the first scraper 10 connecting the first and second crushing blades 5 and 6, the second scraper 11 connecting the second and third crushing blades 6 and 7, and the third and fourth crushing blades 7,
A third scraper 12 for connecting 8 is provided, and a fourth scraper 13 for the central portion 20a of the guide H steel 20 is provided inside the fourth crushing blade 8 so as to project.

The first, third and fourth crushing blades 5, 7, 8
Have the same shape, the rear edge a is formed in a taper shape that is inclined toward the joint steel plate JP side, and the second crushing blade 6 is formed short in the front-rear direction so as not to interfere with the joint pipe cover 24. .

The first to third scrapers 10 to 12 are
It is attached parallel to the rear edge a. The first scraper 10 is formed to have a short length so as not to interfere with the joint pipe cover 24, and the second scraper 11 is provided with a cutout portion 11 a that does not interfere with the joint pipe cover 24. Also, the third scraper 1
The notch 12a is formed in the connector 2 so as not to interfere with the head of the connecting rod 25.

Further, although not shown, it is preferable to install a belt-shaped brush above the crushing blades 5 to 8 and 9 for cleaning slime and the like adhering to the joined steel plate JP.

Next, the operation will be described.

During cleaning, the apparatus 1 is guided through the guide 3 to the guide H steel 2 on one side (left side in FIG. 4) of the joined steel plate JP.
Guide to 0 and drop. Then, first, the crushing blades 5 to 8 and 9 bite into the crushed stone S by the weight of the device 1, loosen the compacted and self-standing crushed stone S, or cause cracks in the solidified crushed stone S.

Next, the entire weight of the apparatus 1 is applied to the blade edges of the scrapers 10 to 14, and the loose crushed stone S or the solidified crushed stone S in which cracks are generated is used for the joining steel plate JP and the guide H steel 2
Scrape from the 0 surface. Then, when the device 1 cannot be scraped off by one drop, the device 1 is pulled up by 1 to 2 m and dropped again to scrape the crushed stone S for cleaning. When the left side of the joined steel sheet JP is cleaned, the right side is cleaned.

[0029]

Since the present invention is configured as described above, it has the following effects.

(1) Cleaning efficiency for scraping and crushing crushed stones can be improved, and working time can be shortened.

(2) It is relatively small and easy to handle.

(3) Both the scraping and crushing scraping functions are provided, and the conventional setup change time can be eliminated.

(4) There is no mechanical drive part, and there is no risk of failure.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view of FIG. 1;

3 is a top view of FIG.

FIG. 4 is a top view illustrating a cleaning mode.

FIG. 5 is a guide wall installation process diagram for explaining an underground continuous wall construction mode.

FIG. 6 is an excavation process diagram of a preceding element.

FIG. 7 is a process drawing of slime treatment and good liquid replacement.

FIG. 8 is a reinforcing bar building process diagram.

FIG. 9 is a process drawing of building a tremie pipe.

FIG. 10 is a process drawing of crushed stone feeding and concrete placing.

FIG. 11 is an excavation process diagram of a trailing element.

FIG. 12 is a drawing of the joint protective plate drawing process.

FIG. 13 is a joint part cleaning process diagram.

FIG. 14 is a process drawing of slime treatment and good liquid replacement.

FIG. 15 is a reinforcing bar building process diagram.

FIG. 16 is a process drawing of a tremie pipe installation process.

FIG. 17 is a concrete pouring process diagram.

FIG. 18 is a process diagram of a grout injection process.

[Explanation of symbols]

 B1, B2 Reinforcing bar cage BM Base machine C Belt conveyor CM Cleaning machine D1, D2 Excavation groove DM Excavator DP Joint protection plate E1 Leading element E2 Trailing element F Flexible hose G Glaude pump GL Good liquid H Lifting device JP Bonding steel plate P Concrete Pump R Uncut part S Crushed stone SH Crushed stone hopper T Tremy tube W Guide wall WH Winch 1 Cleaning device 2 Main body 3 Guide 4 Lifting metal fitting 5 1st crushing blade 6 2nd crushing blade 7 3rd crushing blade 8 4th Crushing blade 9 Corner crushing blade 10 1st scraper 11 2nd scraper 11a, 12a Notch part 12 3rd scraper 14 4th scraper 20 Guide H steel 20a Central part 21 Protective angle 22 Inclinometer square pipe 23 Joint pipe 24 Joint pipe cover 25 Connecting rod

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takashi Tazawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Toshihisa Takane 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References: Actual development: Sho 55-163085 (JP, U) Actual development: Sho 56-39172 (JP, U)

Claims (1)

(57) [Claims] 1. The underground, characterized in that a main body guided by guide H steel of a joined steel plate by a guide means is provided with a plurality of crushing blades for crushing crushed stones and a plurality of scrapers for scraping crushed stones. A joint steel plate cleaning device for continuous wall joints.