JPH0239570Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Industrial application field The present invention relates to a crusher for rock, concrete, etc.

(2) Conventional technology An economical method for crushing rocks, concrete, etc. is to drill holes in the material to be crushed, load explosives, and detonate them. However, due to the need to reduce pollution such as noise and vibration, There are methods such as using an expanding agent instead of explosives, inserting a wedge, and press-fitting a slurry.

(3) Problems to be solved by the invention The above method has problems in terms of construction efficiency, machine durability, etc.

The purpose of the present invention is to provide an economical and efficient crusher in view of these problems.

(4) Means for solving the problem Figure 1 is a cross-sectional view of a tube having the basic structure of the present invention. The inner shape of the cross section is flat, that is, non-circular, and the outer shape is approximately circular.

The tube is primarily formed from a combination of elastic and rigid materials.

When applying internal pressure to the tube formed as above,
The inner shape of the cross section tends to approach a circular shape. That is, the minor axis of the inner shape increases. Along with this change, the outer diameter in the short axis direction increases.

(5) Action When the tube is inserted into a substantially cylindrical hole drilled in a material to be crushed and internal pressure is applied, the material to be crushed is spread out and crushed as shown in Fig. 2.

The pipe is mainly made of an elastic material or a combination of an elastic material and a rigid material, and if the internal pressure is removed after crushing, the cross-sectional shape of the pipe will be restored to the state before pressurization, that is, the state shown in Figure 1. , the pressure fluid is recovered.

(6) Embodiment In FIG. 1, 1a is a sealing layer, and 1b is a reinforcing layer for reducing distortion in the circumferential direction and axial direction of the pipe due to internal pressure. 1c is an elastic member for transmitting radial displacement of the seal layer 1a and reinforcing layer 1b due to internal pressure to the object to be crushed. 1d is a reinforcing member for reducing radial distortion of the elastic member 1c and faithfully transmitting radial displacement of the seal layer 1a and reinforcing layer 1b to the object to be crushed. 1e is an inner hole to be pressurized with pressure fluid.

Examples of the constituent materials of the tube are as follows. The sealing layer 1a is made of soft rubber or soft resin, the reinforcing layer 1b is a braided layer of hard steel wire, and the elastic member 1
c is a hard rubber or medium hard resin, and the reinforcing material 1d is a metal lump or a hard resin lump.

To apply internal pressure to the tube, one end is sealed and the other end communicates with a source of pressure fluid.

In FIG. 1, the tube to be pressurized has a single inner hole, whereas FIG. 3 is a sectional view of a tube having a plurality of inner holes. The outside of the cross section of the tube has a shape that is approximately inscribed in a circle at a plurality of locations. When internal pressure is applied to the tube shown in FIG. 3, the cross-sectional shape of each internal hole tends to approach a circular shape. In this case, since the displacements of the respective inner holes are added, the displacement of the outer side in FIG. 1 is larger than that of the tube.

(7) Effects of the invention The shape of the pipe can be easily restored after each crushing operation, and the pressure fluid can be easily recovered, so it is efficient.

Since there is no relative mechanical movement between the members, there is little internal wear and tear, and there is no risk of crushed powder of the material to be crushed entering between the members.

Durability can be ensured by the reinforcing layer.

It is efficient because the deformation of the tube has circumferential directionality, and the desired direction of crushing or the direction of easy crushing can be selected.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the basic structure of the present invention. 1a is a sealing layer, 1b is a reinforcing layer, 1c is an elastic member, 1d is a reinforcing member, and 1e is an inner hole to be pressurized. FIG. 2 is a sectional view of a state in which an object to be crushed is crushed by applying internal pressure to the tube shown in FIG. 2a is the object to be crushed. FIG. 3 is a sectional view of a state in which a pipe with a plurality of inner holes to be pressurized is inserted into an object to be crushed. 3a is a sealing layer, 3b is a reinforcing layer, 3c is an elastic member, 3d and 3e are reinforcing members,
3f is the inner hole to be pressurized, and 3g is the object to be crushed.

Claims (1)

[Scope of utility model registration request] A tube of unequal wall thickness with an inner cross-sectional shape that is flat and an outer cross-sectional shape that is circular or approximately inscribed in a circle, at least partially made of an elastic material, and capable of applying internal pressure. A tubular crusher characterized in that the outer diameter increases in the short diameter direction of the inner cross-sectional shape.