JPS6229698A - Crusher - 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 FIELD OF THE INVENTION The present invention relates to a crushing device for primary crushing of rock, concrete foundations, etc., and more particularly to a crusher that crushes by static high pressure using fluid pressure.

BACKGROUND TECHNOLOGY Conventionally, explosives such as dynamite have been commonly used as a crushing method for primary crushing of bedrock and concrete foundations, but for example, noise and vibration in urban areas have been avoided for safety reasons. There is a demand for crushing methods that are noise-free and vibration-free, and crushers that use explosives or hydraulic pressure to suppress rapid chemical reactions are being put into practical use.

In addition, the applicant previously proposed a crushing device that uses the vaporization pressure of dry ice to bulge an elastic tube and apply high pressure to concrete, etc. (Japanese Patent Laid-Open No. 60-3183
No. 9).

The above crushing equipment vaporizes dry ice to obtain high pressure, so it is necessary to set the pressure arbitrarily and fill it with dry ice before operation. There was a problem in terms of ability.

Purpose of the Invention The present invention provides a crushing device that performs primary crushing of concrete, etc. by expanding an elastic body with high-pressure fluid, and can arbitrarily set the pressure using hydraulic pressure, which improves workability and safety, and improves pressure resistance. The aim is to create a crusher with excellent durability, high crushing efficiency, simple structure, and easy maintenance.

Structure and Effects of the Invention The present invention has a cylindrical cylinder sealed at both ends with end caps, which is divided into two chambers by a free piston fitted therein, and in which fluid is supplied to the outer peripheral surface of the cylinder at the terminal end of one chamber. Two rubber tubes each having a passage and a thick-walled flange around the inner peripheral surface of one end are combined so that each thick-walled flange is located at both ends of the cylinder, and the flanges are clamped or attached to the end cap. The cylinder is fitted into a circumferential groove and the outer peripheral surface of the cylinder is covered.
A crusher characterized in that fluid is sealed in advance in one of the chambers, high pressure fluid is introduced into the other chamber, the sealing fluid is pressurized between the outer periphery of the cylinder and the rubber tube, and the rubber tube is expanded in a radial direction. It is.

In this invention, the end cap of the cylinder may have a removable structure or may be integrated with the cylinder,
The double-walled rubber tube may be made of any material as long as it has an elastic structure.The thick-walled flange of each inner and outer tube is provided at one end of each tube, and the thin-walled flange is provided at the other end of the inner tube. It is also a good idea to provide

The flanges of each tube are placed opposite each other at both ends of the cylinder, and when the crusher is in operation, the axial force is transmitted only to these flanges, resulting in excellent pressure resistance and durability.
This has the advantage of improving crushing efficiency.

Further, the two pressure media used may be the same or different, or a combination thereof, which allows the tube to expand within the movement range of the free piston and prevents damage to the tube due to excessive expansion.

In addition, the crushing machine according to the present invention is noiseless because it primarily crushes rock, etc. using the expansion pressure of the rubber tube.

There is no vibration, and the time required for crushing is short, and the double-layered structure and rubber tubes ensure performance such as strength and crushing ability under high pressure, and safety against M leakage. It is also advantageous in terms of maintenance, as only the outer tube, which is easily damaged, can be replaced.

In addition, the crusher according to the present invention can connect a plurality of crushers in series at the end cap portions at both ends, and simultaneously operate the connected crushers as a crusher according to the length of the hole provided in the rock.
Rocks can be crushed efficiently.

DISCLOSURE OF THE INVENTION BASED ON THE DRAWINGS FIG. 1 is a longitudinal sectional view of a crusher according to the present invention, and FIG. 2 is a longitudinal sectional view of the crusher in operation with high-pressure fluid.

The cylindrical cylinder (1) has cylindrical end caps (2X3) screwed onto both openings, and the cylinder (1)
A piston guide (5) made of a hollow pipe is arranged at the axial center of the piston guide (5), both ends of which are supported by the above-mentioned end caps (2
A free piston (6) that moves under the control of the cylinder (1) is fitted into the cylinder (1).

The inside of the cylinder (1) is divided into two chambers by a free piston (6), and the water chamber (8) on the tip side of the cylinder (1) (lower side in Figure 1) has a tip end cap (3). Water is introduced into the chamber through the water supply port (13) drilled in the chamber and sealed with a plug. Pressure oil is introduced into the oil chamber through the oil port (11) through the piston guide (5) through the port (10), and through the oil port (10).
A pipe from the hydraulic service device is connected to the end cap (3), and the other end cap (3) has a communication hole (for discharging pressure oil).
12) is perforated and is usually closed with a plug.

The outer peripheral surface of the cylinder (1) is the inner tube [20]
and an outer tube (22).

Inner tube (20) and outer tube (22)
Each has a flange portion (21H23) provided around its inner peripheral surface at one end, and the mutual flange portions (21) (2
3) They are arranged so that they are located at opposite ends of the cylinder (1), and the flange portion (21) of the inner tube (20) is connected to the end cap (2) having the pressure oil port (10). It abuts on the outward end face and is clamped with a lock nut (4) via a spacer ring (9).

It's stuck. In other words, the flange portion (21) is clamped within a circumferential groove formed by the end face of the end cap (2) and the spacer ring (9).

Further, the other end of the inner tube (20) extends to the outward end surface position of the end cap (3) on the distal end side, and the entire inner tube (20) is covered with the outer tube (22). flange part (2
3), as in the case of the inner tube (20), comes into contact with the outward end surface of the end cap (3) on the distal side, and is clamped and fixed with the lock nut (4) via the spacer ring (9). The other end is configured to cover the spacer ring (9) on the end cap (2) side having the pressure oil port (10).

Next, the operation and effects of the crusher according to the present invention will be explained.

Inner tube (20) and outer tube (22)
Pressure oil at the required pressure is supplied from the pressure oil port (10) of the end cap (2), enters the oil chamber (force) from the oil hole (11) of the piston guide (5), and expands the free piston. (6) is how to use the end cap (3)
The pressure is transferred to the water in the water chamber (8) which was previously sealed by moving to the side, and the water in the water chamber (8) passes through the water hole (14) provided at the other end of the cylinder (1). ) is press-fitted between the inner tube (20) and the outer periphery of the cylinder (1) to inflate the inner tube (20) and outer tube (22).

That is, as shown in Fig. 2, the pressurized water acts on the inner tube (20) (arrow in the figure), causing the inner tube (20) and the outer tube (22) to expand and bulge, causing the rock (30), etc. Pressure is applied to the material, eventually crushing it.

At this time, the flange portions (21) (23) of the inner tube (20) and outer tube (22) are arranged so that the spacer The sliding surfaces of the ring (9) and the flange portions (21) (233) form a seal that prevents water from leaking to the outside, sliding in the radial direction and coming into close contact with the perforated violet in the rock.In addition, the inner tube (20) The wall thickness is thin and there is no reinforcing material except for the flange part (21), but the flange part (21) is similar to the outer tube (22
), it adheres closely to the hole wall, preventing it from protruding and preventing damage even when high pressure is applied.

The crusher of this invention has a double structure tube consisting of an inner tube (20) and an outer tube (22), so that the flange portions (21) (
23), it is possible to improve strength and ensure leakage resistance, and it is easy to attach the tube.In addition, by inserting reinforcing material throughout the outer tube (22) including the flange portion (23), It can maintain its strength against friction scratches with the rock (30), and furthermore, even if a small hole occurs in the outer tube (22), the inner tube (20) is protected and pressure fluid is not released to the outside. No leakage.

On the other hand, the rock mass (30) is crushed by high pressure, but when cracks occur, the resistance force decreases rapidly, and the internal pressure of the tube also decreases.

In addition, the inner tube (20) and outer tube (
Since the double-structured tube 22) cannot be expanded indefinitely, it is necessary to provide a limiter, but in the embodiment, the free piston (6) functions as a limiter. That is, when pressure oil is not introduced, the free piston (6) is located near the end cap (2) on the pressure oil port (10) side, and when pressure oil is introduced, the free piston (6) is located near the end cap (3) at the tip. It moves to the side and finally abuts the end cap (3) and the tube does not expand any further, thus preventing breakage.

After completing the crushing of the rock (30), when the crusher handles pressure oil, the inner tube (20) and outer tube (22) return to their original outer diameters due to their own contraction force, and are released from the crushing hole. It can be removed.

As described above, the crusher according to the present invention primarily crushes rock etc. using the expansion pressure of the rubber tube, so it is noiseless and vibration-free, and the FR distance required for crushing is short, and it has a double structure. The rubber tube ensures safety such as strength and leakage resistance during high pressure operation, and is also advantageous in terms of maintenance, as only the outer tube, which is easily damaged, can be replaced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a crusher according to the present invention, and FIG. 2 is a longitudinal sectional view of the crusher in operation with high-pressure fluid. 1...Cylinder, 2.3...End cap, 4.
...Lock nut, 5...Piston guide, 6...
Free piston, 7, 8... Chamber, 9... Spacer ring, 10... Pressure oil boat, 11... Oil passage hole, 12... Communication hole, 13... Water supply boat, 1
4... Water hole, 20... Inner tube, 21.
23...Flange part, 22...Outer tube,
30...Bedrock.

Claims (1)

[Claims] 1 A cylindrical cylinder whose both ends are sealed with end caps is divided into two chambers by a free piston fitted inside the cylinder, and a fluid passage to the outer peripheral surface of the cylinder is provided at the terminal end of one chamber, Two rubber tubes each having a thick-walled flange around the surface are combined so that each thick-walled flange part is located at both ends of the cylinder, and the flanges are held by the end cap part or fitted into the attached circumferential groove. , consists of a structure in which the outer circumferential surface of the cylinder is encapsulated, one of the chambers is sealed with fluid in advance, high pressure fluid is introduced into the other chamber, the sealing fluid is pressurized between the outer circumference of the cylinder and the rubber tube, and the rubber tube is sealed. A crusher characterized by bulging in the radial direction.