JPS6013194A - Hard substance crushing apparatus - 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 is applicable to, for example, rock breaking work at a quarry, rock destruction work under the road surface in sewerage work, gas pipe work, etc., or concrete manufacturing works such as concrete breakwaters and concrete blocks. This invention relates to a hard object destruction device used for body destruction work.

As this type of hard crushing device, there have conventionally been devices having the gist of the measures described in the following [I] and [11], as shown in the sixth factor.

(Moon) The rigid cylindrical body Q is provided with a piston rond (511) that can freely protrude and retract in its axial direction, and applies fluid pressure to the conohiston rond (51) in the protruding and retracting directions. Additional capacity cylinder chamber tn, 15al
is formed.

Q: There is a wedge-shaped part paulownia 6 at the tip of the piston rod t511.
4I has the same name, and the auxiliary cylindrical body connected to the rigid cylindrical body has the same name as the piston rod 51.
A hard object destruction arm is provided which is forcibly opened and swung in a direction substantially perpendicular to the axial direction as the arm comes into contact with the wedge-shaped member which protrudes and moves integrally with the arm. There is.

In such a conventional device, the wedge-shaped part set 541 is modeled by moving the piston rod (51) in a state in which the arm @ is inserted into a hole (,) previously drilled in the hard object (A). Since this method uses action to destroy a hard object (A), it is easier to destroy a hard object (A) than when a hard object is destroyed using gunpowder, for example, or by striking V-metal with a gray car or steel ball. Although the publication has the advantage of being able to carry out destructive work safely while minimizing noise and vibration pollution, it has the following drawbacks.

That is, in order to correspond to the depth of action of the crushing force and pressurization of various hard materials, the auxiliary isomorphic body l is inserted from the tip of the arm for destroying hard materials
551I7) It is necessary to make the insertion length to the @ capital as long as possible, but if it is made this long, the above-mentioned arm kasumi and It is not necessary to make the diameter of the horizontal member very large, and the diameter of the hole that must be drilled in advance in the hard material also becomes large, so this preliminary drilling operation requires a great deal of effort and time.

Moreover, since the destructive force applied by the arm (g) is applied to only one location, the number of destructive operations per unit area increases, resulting in poor work efficiency as a whole.

One object of the present invention is to improve the above-mentioned conventional drawbacks.

In order to achieve this object, the hard material breaking device according to the present invention is designed such that the hard material breaking device according to the present invention is equipped with a rigid shaft-shaped body having a shaft-shaped body having a shaft-like body having a shaft-like body having a shaft-like body having a shaft-shaped body having a shaft-shaped member having a shaft-like member having a shaft-like member having a shaft-like member having a shaft-like member having a shaft-like member having a shaft-like body. A piston for destroying hard materials is provided which can freely project and retract in a direction perpendicular to or approximately perpendicular to the piston. The point is that means is provided that can move the piston forcibly into the retracted position.

The effects and effects of the above-mentioned special configuration are as follows.

<Function> Hard objects such as rocks and concrete structures'f: When destroying hard objects (A), as shown in Figure 1 of the example below,
The fluid in the protruding movement direction is inserted into the plurality of pistons (3) provided in the hole (11) made of Ill made of shaft (11 is pushed in its entirety into the annular body + 1), which is previously drilled in the hole. By applying pressure, a large area of the hard material can be efficiently destroyed at once by utilizing the property of the hard material having a lower tensile strength than its compressive strength.

<Effects> Therefore, the insertion position of the rigid shaft-like body can be freely set according to the depth of pressure applied to the crushing force of various hard objects, so the length in the axial direction can be reduced compared to conventional equipment. This makes it possible to reduce the size and diameter as much as possible, and also reduces the number of destruction operations per unit area, making it possible to reduce the size and weight of M as a whole. We were able to achieve an improvement in efficiency.

Hereinafter, embodiments of the configuration of the present invention will be described based on the drawings.

Figure 1~! As shown in Figure J8, the hard material destruction device (C), which is detachably connected to the pressure oil (pressure fluid) generator CB) via a hydraulic hose (H), has a cross-sectional shape that is approximately circular. Holes (2) which are perpendicular to or approximately perpendicular to the axial direction at 10 locations equally spaced in the axial direction of the metal shaft-like body fl) having the shape A piston (3) for destroying hard materials, which is movable and protrudes in the axial direction of the hole, is inserted into these six holes (2).
1, and the hole +21 of the shaft-like body (1)
ltO
The INIJ protrudes from the inner end surface of each piston (3) and -.
A flow path (4) along the axial direction is formed to which hydraulic pressure in the J direction can be applied simultaneously.

The plug (5) and the stage m5 (8a) of the piston (3111-) are screwed and defined in the hole opening end of the shaft-like body (1).
・Springs (6) are interposed between the pistons and the pistons, respectively, for forcibly returning the 61J piston +3 to the retired position when the pressure oil in the flow path (4) is discharged. In addition, the stepped portion (8a) of each piston (3)...
The I8 groove (3b) formed on the outer peripheral surface has an O ring (2) in contact with the inner peripheral surface of the shaft-like body flll.
7)・II is fitted and held.

The lfJ pressurized oil button production device B) consists of two types of hydraulic pumps (PI) and (Pz) linked to an electric motor cap), and a relief valve (vl) for switching from a high pressure state to a low pressure state.
), a check valve (v2), a relief valve for circuit safety (v3), a destructive action for supplying pressure oil to the flow path (4) of the shaft-shaped body (1), and a pressure oil to the flow path (4). It is constructed of a neutral window that stops the supply and discharge, and a control valve (v4) that can be switched to a released state that discharges the pressure oil in the flow path (4) to the tank (T).

And, as shown by l1lz, 5 shows rocks and concrete 1.4
When destroying a hard object such as a small object, push the shaft fi+ into the hole (,) drilled in the hard object (N), and operate the control valve ('Va) with this shaft. When pressure oil is supplied to the flow path (4) of the shaft-like body flll, each of the pistons (3)
... resists the elastic force of spring (6)
By protruding and moving each piston (3) and strongly pressing the inner peripheral surface of the hole (,) of the hard object (A) with a fist,
Utilizing the property of the hard material (A) that the tensile strength is lower than the strength of the compacted rice, the hard material (A) is destroyed by generating all the tartar.

In the above embodiment, 70 pistons (3) were arranged in parallel in the axial direction of the shaft-like body +1);
In addition, the piston (3) may be installed at equal or unequal pitches depending on the conditions of use, etc. 1 It is good to set it appropriately.

Furthermore, the piston (3) is installed at two locations in the same direction on the shaft-shaped body (1), or at three locations in the same direction as shown in FIG. 4, or at four locations in the same direction as shown in FIG. You may do so.

Furthermore, when a plurality of pistons (3) are arranged side by side in the circumferential direction as described above, these pistons t3+' may be arranged in a staggered manner in the axial direction.

The fluid pressure applied to the piston (3) may be either static pressure or dynamic pressure, but it is desirable to use dynamic pressure that can efficiently destroy the hard material (A) with impact force.

Forcibly return the piston (3) using fluid pressure f! It may be configured and implemented so as to cut 8 pieces.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the hard material destruction device according to the present invention, FIG. 1 is a schematic diagram showing the state of use, FIG. 2 is an enlarged side view of the main part-7s1, and FIG. The figure is a hydraulic circuit diagram of the main parts. Figure 4. FIG. 5 is an enlarged cross-sectional view of main parts showing different embodiments. FIG. 6 is a longitudinal sectional front view showing a conventional hard material destruction device. (1)...Rigid shaft-like body, (3)...Piston for destroying hard materials, (4)...Flow path. O 2nd 4th 4th mouth 45 ri

Claims (1)

[Scope of Claims] ■ The rigid shaft-like body (1) is provided with a structure that can be freely protruded and retracted in a direction perpendicular to or almost perpendicular to the axial direction of the rigid shaft-like body (1) at multiple points spaced appropriately apart from each other in the axial direction. Piston for breaking hard materials (3
), and a flow path (4) capable of applying fluid pressure in the protruding movement direction to each piston (3) is formed, and the piston (3) is placed in a retracted position. A hard material destruction device provided with a means for forced return movement. (2) The forcible return means of the piston (3) is stopped by a spring. (11) The hard material described in claim 0 is damaged by the hard material (11). (2) The hard material breaking device according to item (2) e, wherein the forced return means for the piston (3) is operated by fluid pressure.