JPS58113470A - Method and apparatus for crushing concrete or rock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for crushing rocks, concrete, etc.

This type of crushing method is called Dyna!, which is used to crush concrete or rocks during construction or mining. ◎ However, it is impossible to use explosives in such areas where people are crowded, and when they are used in mines, it also causes the collapse of mine roads. For this reason, the
Particularly in order to crush small-scale rocks, concrete, etc., K drills a hole in #1 grade co/crete, etc., fills this hole i1 with expandable cement, hardens and expands it, and uses this 11 dominant force to crush the concrete. One method has been developed to create cracks in rocks, etc.

This type of crushing method is effective because it is not dangerous, does not require any skill, and can be used with explosives. After forming the crack, the cement is filled into the crack and acts as an adhesive.In order to completely crush the crack, K has to harden and dissolve the cement. There is a drawback. That is, the crushing method has the drawbacks of being expensive and requiring double labor.

The object of the present invention is to provide a method and apparatus for crushing concrete, rocks, etc., which are inexpensive, easy and safe and which do not have these drawbacks. This is what we intend to provide.

Therefore, the crushing method according to the present invention is characterized by filling water into the holes formed in the crushing target, freezing only the upper part of the water, and then freezing the entire water.〇The present invention The crushing device according to the invention has a cooling pipe in a hollow circular casing, and the cooling pipe includes a round cooling pipe that cools only the upper part of the hollow cylindrical casing, and a cooling pipe that cools the entire casing or the #Il cooling pipe. According to the crushing method or crushing apparatus according to the present invention, it is possible to use expensive cement or dangerous explosive lK. To further explain the present invention: First, in the crushing method according to the present invention, a well-sized hole for filling water is bored in the object to be crushed. Of course, if a hole has already been formed, this hole may be used.The object to be crushed is not limited in the present invention, and can be the aforementioned rocks, concrete, etc. However, according to the present invention, there is a feature that it can be effectively used for crushing in water. According to the crushing method according to the present invention, water is filled in the hole of the object to be crushed, and first only the upper part of the hole is crushed. Freeze to form an ice layer on top. This is done in order to prevent the Wl tension caused by the freezing of the ice layer mineral water from escaping above the open hole. The method of freezing only the upper part in this way is not limited.For example, after filling the large part with water, adding ice cubes to float in the water, and then cooling the whole part.
It can also be formed by selectively cooling water.

In this way, only the upper part of the water filled in the hole is first frozen to form an ice layer, and then the entire remaining water is frozen, so that the object to be crushed is crushed by the expansion force. At this time, as in the case of using the above-mentioned g* cement, the object to be crushed is not crushed by the powder 2 because it is attached by ice, but the ice melts when exposed to only 71klll in the atmosphere. It is possible to create a state where it is difficult to move.

The refrigerant for cooling water is basically not limited. For example, it can be liquefied carbon dioxide, liquefied oxygen, liquefied air, liquefied nitrogen, anomonia, liquefied water, chilled alcohol, and the like.

Next, an example of a crushing device according to the present invention will be explained based on the drawings.

Figure N1 is a sectional view of an example of a crushing device according to the present invention.

As is clear from Fig. 1, inside the hollow cylindrical cake/dagger, 4 seconds of water other than the cooling pipe 2 for cooling the upper part of the water and the forming ice layer 3 (Fig. 2) are cooled. A cooling pipe 5 is provided on the inner wall of the primary casing/glue, and the cooling pipes 1z6- and 5 are connected to the refrigerant introduction pipes gt and 5t6c, respectively, and separate the switching pulp 6 from the refrigerant tank. (Not shown) K connection.

On the other hand, refrigerant discharge pipe 22 for discharging unnecessary cold*1*
．． 52 is connected to cooling pipes 2 and 5.

The casing is preferably made of a thermally conductive, malleable material, such as aluminum alloy, which has a high thermal conductivity and is free from freezing of water. This is because it can refreshingly prevent the destruction of. The inward force caused by this freezing is extremely large. This is thought to be because icing occurs on the casing surface, and this icing layer functions to maintain the casing's stability.

Furthermore, the reason why the casing 1 is cylindrical is that it conducts cold and heat uniformly in all directions and is rounded to prevent the value S of the casing l by dispersing the force inward. Apparatus: In the casing 1, a cut #7t can be interposed between the upper io cooling pipe 2i1 and the aI2 cooling pipe 5s. This makes it possible to cool only the upper part of the vehicle more efficiently.

In order to use the crushing device according to the present invention, water 4 is first filled in the hole 9 formed in the object 8 of the concrete wall, and the crushing device is inserted into the water 4 almost vertically.

The refrigerant is transferred through the switching pulp 6 to the refrigerant introduction pipe 21 and the cooling pipe 2.
Then, through the switching pulp 6, the refrigerant is introduced only into the cooling pipe 5 or into the cooling pipes 2 and 5, and the entire water is frozen. Due to this freezing, the water 4 (ice) expands and crushes the object 8 to be crushed.

Next, examples of the present invention will be described.

Example height: 18ffix diameter? (If a hole with a diameter of 2011 x 1551 is made in the cylindrical concrete of !If, 100 f of water is poured into this hole.
Insert the crushing device according to the present invention with a length of 10 mm and the water will dry out and overflow (9), first freeze the upper part at a temperature of -20°C, and then freeze the whole body at -20°C. Cooled and cured for 1 time, the compressive strength is approximately 200%.

After cooling, cracks appeared in the concrete within an hour, so cooling was stopped and the ice was melted.The cylinder was crushed by 2 degrees from the height direction, and one of the crushed pieces was crushed from the horizontal direction. It was completely crushed into three pieces in total.

As a reference, when the concrete was crushed using a cylindrical concrete of the same size Kll-dominant cement (Plyster: Onoda Ryu Menoto II), cracks occurred in about 36 hours. As explained above, according to the present invention, it is possible to completely crush the ice by simply melting the ice after cracking and cracking. It is advantageous because it can be worn as shoes.

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[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an example of fracture iI and pupil according to the present invention. FIG. 2 is a schematic diagram for explaining how to use this crushing device. l...-Casing, 2.5... Cooling pipe, 3...
... Ice layer, 4... Water 8... Material to be crushed, 9... Hole. Applicant Agent Masaki Amemiya - 10 - Figure 1 Figure 2 Procedural amendment (method) 1. Indication of the case Filed in 1982 Permit Application No. 137266 3. Relationship with the person making the amendment Patent application Person 4, Agent 6, Number of inventions increased by amendment 7, Subject of amendment (1) Domei Zhongzhong, 1st, Name of invention Concrete,
Method for crushing concrete, rocks, etc. and crushing rod #1, title of the invention Delete two characters, ``Method for crushing concrete, rocks, etc., and device #1''.

Claims (1)

[Claims] L. A method for crushing concrete, rocks, etc., characterized by filling nine holes formed in an object to be crushed with water, freezing only the upper part of the water, and then freezing the entire water. 2. Mayuki Hio produces liquefied carbon dioxide, liquefied carbon dioxide, nitrogen chloride,
Claim I characterized in that the process is carried out using a refrigerant such as liquid air, ammonia, liquid hydrogen, or cooling alcohol.
Method of crushing concrete, rocks, etc. using K 0 8 @ Ice only on the upper part - Cooling by pouring water into water 41 tf Claim O range 1si
Method for crushing concrete, rock, etc. according to either l or 20 〇15-t A cooling pipe is provided in a hollow cylindrical casing. Crushing of concrete, rocks, etc., characterized by comprising: a first cooling pipe; and a second cooling pipe for cooling the entire cage/da or a portion where the first cooling pipe is not attached. Apparatus ◎ 5. The apparatus for crushing concrete, rocks, etc. according to claim 4, characterized in that the cage/da described in tII is manufactured from a material having good thermal conductivity and excellent malleability.