JP3113994B2 - Crusher for improved solidified soil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to construction soil excavated in excavation work or tunnel construction of buildings, or dredged soil, waste bentonite muddy water, waste muddy water generated in a reverse construction method or the like, and other construction waste soil (hereinafter, referred to as "construction soil"). For the disposal and effective use of construction surplus soil), a cement-like stabilizer is mixed into the construction surplus soil, pressurized and dewatered to form a cake-like improved solidified soil that is relatively uniform. The present invention relates to a crusher for crushing stones to produce a large amount of crushed stones.

[0002]

2. Description of the Related Art In recent years, the amount of construction residual soil generated has been increasing, and the capacity for receiving disposal sites is becoming tight. For this reason, technical developments aimed at large-scale industrial disposal and effective use of construction surplus soil have recently been actively pursued in various fields, and results are being produced. For example, the invention of a method for effectively utilizing construction surplus soil described in Japanese Patent Application Laid-Open No. 4-49315 is one type of the invention. The invention is characterized by mixing cement, quick lime or other cement-based stabilizers into construction surplus soil, and adding 5-200 kg /
Pressurized to about ² cm, dehydrated to make an improved solidified cake-like soil, granulated this to a size of about 5 to 100 mm, the granulated stabilized soil alone or a mixture In addition, the content is to be effectively used for the formation of artificial ground and the like as embankment material and backfill material.

[0003] A conventional crushing or crushing device (hereinafter referred to as a crushing device) generally crushes rocks and sedimentary gravel collected from a raw rock hill to produce products from aggregate to fine aggregate. It was meant to be. The crushing mechanism is roughly classified into a rotary crushing method and a compression crushing method, both of which are used merely for the purpose of breaking up large blocks and limiting the diameter (particle size) after crushing to 10 to 50 mm. It is not suitable for continuously producing large amounts of crushed stone.

[0004]

The conventional crusher has a uniaxial strength of 200 to 1 such as rocks, gravel, or concrete waste.
The purpose is to merely crush a relatively hard lump of 000 kg / cm ² into fine pieces. Therefore, the crushing mechanism was based on the principle of crushing with two lithographic plates or drums with slits and irregularities. Configuration, so the diameter is 10
It is an unsuitable device for producing large volumes of relatively uniform crushed stone of 50 mm.

On the other hand, the improved solidified soil immediately after dewatering, which is made into a cake by high-pressure, dewatering treatment by mixing a cement-based stabilizer for effective utilization of construction surplus soil, has a uniaxial compressive strength of 5 to 30 kg / cm. Although the strength is relatively small as about ² , it is a square shape with a thickness of about 20 to 60 mm and a side of about 1 m, which is crushed to a diameter of about 20 to 50 mm to produce a uniform crushed stone. There is no crushing device or crushing method at present.

[0006]

As a means for solving the above-mentioned problems of the prior art, an improved solidified soil crushing apparatus according to the present invention comprises mixing a cement-based stabilizer into construction residual soil, pressurizing and dewatering. In the crushing device for crushing the cake-like improved solidified soil 1 produced by the above method and producing the crushed stone 2, shearing the cake-like improved solidified soil 1 passing between the outer circumferences of the pair of rotating drums 3, 3 therebetween. Alternatively, a protruding crushing blade 4 having an arrangement and a height that causes breakage by bending and pulling at a predetermined size is protruded, and the pair of rotary drums 3 are disposed between the tips of the crushing blades 4. At a distance corresponding to the thickness of the improved solidified soil 1, a pair of rotary drums 3, 3 rotate in a common direction while maintaining a phase relationship in which each crushing blade 4 shears or bends the improved solidified soil 1. (FIGS. 1 to 7).

[0007]

[0008]

The improved solidified cake-like soil 1 can be crushed by the breaking mechanism by shearing or bending and pulling shown in FIG. 1A or the breaking mechanism by shearing shown in FIG. 1B. When the cake-shaped improved solidified soil 1 is passed between the pair of rotary drums 3 having the crushing blades 4 according to the above-described principle, the development of the crushing blades 4 is shown in FIG. As shown in the figure, the improved solidified soil 1 has a thickness of, for example, 10 to 50 mm based on the arrangement and size of the crushing blades 4.
Crushed stones in large numbers continuously.

[0009]

[0010]

Next, an embodiment of the present invention shown in the drawings will be described. 2 and 3 show the configuration of a pair of rotary drums 3 in a breaking device based on the principle of the breaking mechanism by shearing or bending and pulling shown in FIG. 1A or the breaking mechanism by shearing shown in FIG. 1B. On the outer periphery of the pair of rotating drums 3, 3, the cake-like improved solidified soil 1 passing therethrough is provided.
For example, from 10 to 50
In order to produce the crushing blades in a size of mm, the crushing blades 4 each having a square block shape with a side of 20 to 50 mm and having an appropriate height are provided in a checkered pattern. The pair of rotary drums 3, 3 are located between the tips of the crushing blades 4, for example, a cake-shaped (plate-shaped) improved solidified soil 1 having a thickness of 20 to 60 mm.
At a distance equivalent to the thickness of a pair of rotating drums 3,
3 indicates that each crushing blade 4 has the improved solidified soil 1 shown in FIGS. 1A and 1B.
Are rotated in a common direction while maintaining a phase relationship of shearing or bending. Accordingly, when the state of contact of each crushing blade 4 with the improved solidified soil 1 when the pair of rotary drums 3 and 3 rotates is developed, as shown by the solid line and the dotted line in FIG. Dice-shaped crushed stones 2 of substantially the same size are continuously produced by the checkered pattern engagement.

The crushing device shown in FIGS. 5A and 5B shows the crushing blade 4 of the rotary drum 3 formed in a triangular block shape. FIGS. 6A and 6B show the crushing device in which the crushing blade 4 is formed in a cylindrical block shape. The device is shown. 7A and 7B show a crushing device in which the crushing blades 4 of the rotary drum 3 are square block-shaped, triangular block-shaped, and cylindrical block-shaped, each of which is alternately combined in a regular arrangement. ing.

[0012]

[0013]

[0014]

[Effects of the present invention] The improved solidified soil crushing apparatus according to the present invention is a method of adding a cement-based stabilizer to construction residual soil, pressurizing and dewatering the solidified improved soil to form a cake. 20-50mm diameter depending on the purpose of use
It contributes to the continuous mass production of crushed stones of uniform grain size.

[Brief description of the drawings]

1A and 1B are fracture mechanisms of shear and bending tension;
It is a principle explanatory view of a breaking mechanism by shearing.

FIG. 2 is a front view showing an embodiment of a rotary drum of the crushing device.

FIG. 3 is a plan view of the rotating drum of FIG. 2;

FIG. 4 is a developed view showing an operation state of a crushing blade in a pair of rotary drums.

FIGS. 5A and 5B are a front view and a plan view showing different embodiments of the rotating drum.

6A and 6B are a front view and a plan view showing different embodiments of the rotating drum.

FIGS. 7A and 7B are a front view and a plan view showing different embodiments of the rotating drum.

[Explanation of symbols]

 Reference Signs List 1 improved solidified soil 2 crushed stone 3 rotating drum 4 crushing blade

──────────────────────────────────────────────────の Continuing on the front page (73) Patent holder 591043581 Tokyo, Tokyo 2-2-1, Nishishinjuku, Shinjuku-ku, Tokyo (72) Inventor Satoshi Saito 2-5-1-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation In-store technology research institute (72) Inventor Toshiaki Ishise 2-5-1-4 Minamisuna, Koto-ku, Tokyo Co., Ltd.Takenaka Corporation Technical Research Institution (72) Inventor Yoshio Suzuki 2-5-1 Minamisuna, Koto-ku, Tokyo Co., Ltd. Takenaka Corporation Technical Research Institute (72) Inventor Yasushi Kanzaki 8-21-1, Ginza, Chuo-ku, Tokyo, Japan Incorporated Takenaka Civil Engineering Company (72) Inventor Yoshifumi Fujii 8-2-1 Ginza, Chuo-ku, Tokyo, Japan Takenaka, Inc. Civil engineering (72) Inventor Tsuneyasu Onishi 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Civil Engineering Co., Ltd. (72) Inventor Shigeyuki Uchiyama 46 Ohara Nakahara, Tobata-ku, Kitakyushu No. 59 Inside Nippon Steel Corporation (72) Inventor Shunji Uryu 46, Oaza Nakahara, Tobata-ku, Kitakyushu City 59 New Nippon Steel Corporation (72) Inventor Mitsuya Murata 46, Ohara Nakahara, Tobata-ku, Kitakyushu-shi (72) Inventor Kiyoomi Yamada 4-5-8 Miyanogidai, Hanamigawa-ku, Chiba City, Chiba Prefecture (72) Inventor Atsuro Aihara 3-1-6-504, Gyoda, Funabashi City, Chiba Prefecture 72) Inventor Hiroshi Toriumi 1-12-1 Shinkashiwa, Kashiwa-shi, Chiba E-408 Sanpaseo Shin-Kashiwa E-408 (56) References JP-A-4-49315 (JP, A) JP-A-1-99437 (JP, U) 52-29672 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B02C 4/00-4/44 B02C 18/00-18/44 B09B 3/00 301

Claims (1)

(57) [Claims] 1. A crushing apparatus for manufacturing a crushed stone by mixing a cement-based stabilizer into construction residual soil, construction waste soil, etc., compressing and dehydrating a cake-like improved solidified soil, and producing crushed stones. On the outer periphery of the pair of rotating drums, a projecting crushing blade having an arrangement and a tall height that causes breakage of the cake-like improved solidified soil passing therethrough by shearing or bending and pulling to a predetermined size protrudes. The pair of rotary drums are spaced apart from the tip of each crushing blade by a distance corresponding to the thickness of the improved solidified soil, and the pair of rotary drums is configured such that each crushing blade is capable of shearing or bending the improved solidified soil. An improved solidified soil crushing device, characterized in that it is rotated in a common direction while maintaining a certain phase relationship.