JPS60152797A - Explosion free hard rock 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 relates to an improvement of a non-blasting hard rock crushing device that utilizes elastic deformation of an elastic body.

Conventionally, techniques using explosives or mechanical force have been known to crush hard rocks such as hard rocks, but in recent years, as described in Japanese Patent Application Laid-Open No. 58-41189, Techniques have been proposed for crushing rock, etc. using elastic deformation. In this technique, a hole is made in the rock or the like to be crushed, a cylindrical elastic body is inserted into the hole, both end faces of the cylindrical elastic body in the axial direction are supported, and one end face is attached to the other. By pressing, for example, a hydraulic cylinder against the end face of the cylinder, the cylindrical elastic body is swelled radially outward to crush rock or the like.

However, according to the prior art, the support part of the elastic body simply engages with the axial end face of the elastic body, so that when the elastic body deforms, the elastic body deformed between the support part and the insertion hole. A part of the body gets trapped, and as a result, the elastic body is eaten away, which has the disadvantage that the life of the elastic body is shortened.

Therefore, it is an object of the present invention to provide a non-blasting hard rock crushing device that does not cause wear and tear on the elastic body and can have a long service life.

According to the present invention, a tension rod and a ram chair are inserted into a hole drilled in hard rock, an elastic body is provided between the tension rod and the ram chair, and the tension rod and the ram chair are moved relative to each other. In a blastless hard rock crushing device that crushes hard rock by pressing an elastic body in the axial direction and deforming the elastic body radially outward to press a hole, the upper and lower parts of the elastic body are first and second washers. and the washers include first and second ring elements and a plurality of segments disposed between the first and second ring elements, the segments being engaged with a The first and second ring elements have a taper that moves radially outward as the first and second ring elements move toward each other.

Therefore, when the first ring element and the second ring element become relatively close to each other during press deformation of the elastic body, the segments move radially outward under the action of the taper and engage with the inner wall of the hole. Therefore, the elastic body will not get wedged between the support part, for example, the ram chair, and the inner wall of the hole and be torn off.

Although only one elastic body may be used in carrying out the present invention, it is preferable to provide a plurality of elastic bodies. Although the number of segments must be at least two, it is also possible to have a large number of segments. The taper may be provided on the engaging surfaces of the segments or on the engaging surfaces of the first and second ring elements and the segments.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a non-blasting hard rock crushing device A according to the present invention. It shows where the machine is about to be crushed. This non-blasting hard rock crushing device A is equipped with a tension rod 1, and has a ring-shaped cylinder 2 on the upper part thereof, and the tension rod 1 extends through the center of the cylinder 2. cylinder 2
A ring-shaped bismine 3 is housed inside, and a tubular piston rod 4 extends upward from the piston 3. The piston rod 4 is engaged with a stopper, for example a nut 5, provided at the upper end of the tension rod 1. The cylinder 2 is fixed to the upper part of a bracket 6, and the upper part of a pipe-shaped ram chair 7 is fixed to the lower part of the bracket 6. A first washer 8, which will be described later, is provided at the lower end of this ram chair 7, and a stopper, or straw oak 1-9, is provided at the lower end of the tension rod 1, and above the stopper 9, a second washer 8, which will be described later, is provided. A washer 10 is provided. A plurality of cylindrical elastic bodies E are provided between the first washer 8 and the second washer 10. This elastic body is preferably made of urethane rubber, for example.

In operation, as shown in FIG. 2, when liquid J is supplied to the cylinder 2 to move the piston 3 upward, the tension rod 1 moves upward as the piston rod 4 moves upward. As a result, the elastic body E is compressed between the first washer 8 and the second washer 10, so that the elastic body E expands radially outward.

This expansion of the elastic body E in the radial direction presses the hard rock R around the hole [(), and finally a crack B occurs, resulting in the hard rock R
can be crushed.

However, according to the prior art, since the first and second washers 8.10 are not provided as described above, when the elastic body E is expanded, the operating hole 1-1 is not provided. After being engaged, it moves in the axial direction, and the elastic body E is caught between the stopper of the upper part and the I section and the hole 1''.

However, in the present invention, the above-mentioned drawbacks can be overcome by the washer 11 described later.

Figures 3 and 4 show a first example of a washer embodying the invention.
An example is shown. 4. This washer can be applied to either the first or second notch shown in FIG.

In the illustrated embodiment, a first ring element 11 that engages with the elastic body E (FIG. 1) and a second ring element 12 that engages with the lower end of the stopper 9 or the tension rod 1 are provided. Between the first and second ring elements 11.12 there are a plurality of segments 13a, 113b each having a taper surface 14a, 14b (in the illustrated embodiment two segments 13a, 113b) such that the tapered surfaces 14a, 141) engage with each other. It is installed in The segments are therefore ring-shaped both in the assembled state and in the unfolded state, and in this embodiment are semicircular. A circumferential groove 158 N 15b is formed in each of these pigments h 13a, 13b, and an elastic ring 16 is attached to these grooves 15a, 15b. This elastic ring 16 is also preferably made of urethane rubber. In addition, 17 in the figure indicates that the tension rod 1 penetrates J.
- shows a hole.

During operation, as the piston 3 moves upward as shown in FIG. 2, the first ring element 11 and the second ring element 12 are pressed toward each other.

As a result, the plurality of pigments 138, 13a are forced outward in the radial direction by the wedging action of the engaging tapered surfaces 14a, 141). The state is shown in FIG. When both ring elements 11 and 12 are pressed in the direction toward each other in this way, the outer periphery of each segment engages with iH, and the elastic body E is deformed and moved in the axial direction so that the inner wall of hole 1'' and the stopper Even if the elastic body E tries to get in between the elastic body E and the like, the e-gments 13a and 13b can prevent the elastic body E from digging in. The elastic ring 16 is for returning the pigments 1 to 13a, 13b to the position shown in FIG. 3 when the pressing force is released.

Although the illustrated embodiment shows a combination of two segments, three or more segments may be combined. However, in the case of five or more tapered surfaces, it is necessary to form a curved surface so that the tapered surfaces are not flat but come into surface contact during movement.

5 and 6@' show other embodiments of the present invention, in which the left side shows the state before pressing, and the right side shows the state after suppression. In this embodiment, one ring element, e.g.
Tapered surfaces 23a, 23b are formed on the ring element 22 of the ring element 22, and both segments 24a, 24bk: tapered surfaces 25a, 2 that engage with the tapered surfaces 23a, 23b, respectively.
This is an example of forming 5t+. Therefore, the first ring element 21 and the pigments 1 to 24ci, 24b engage in a plane perpendicular to the axis.

As shown in FIG. 6, when pressed, each segment 24a,
24b extends to the positions indicated by two-dot chain lines 24C and 124d to prevent the elastic body from biting in. Elastic rings shown at 'e' as shown in the figure are fitted into grooves on the outer periphery of the pigments L-24a and 24b. This point is similar to the previous embodiment.

FIGS. 7' to 10 show still other embodiments of the present invention. In this example the first and second rings! ! The cables 21 and 22 are substantially the same as those shown in Figures 5 and 6, but the pigments 1-30 are approximately triangular in shape as shown in Figure 9 when viewed from the stop surface. Yes, in the plan view, the first
As shown in Figure 0, it is formed in an arc shape, and adjacent pigments are alternately arranged so that one narrow side 32 faces upward and the other wide side 31 faces downward. and the eighth
As shown, the segments 30 arranged adjacent to each other in opposite directions are arranged in a ring shape and therefore have tapered side surfaces 33. Further, a tapered surface 21a on the lower surface of the first ring element 21 is formed, a tapered surface 35 that engages with this tapered surface 21a is formed on the upper surface 32 of the pigments 1 to 30, and The tapered surface 34 that engages with the surface 22a is made of pigments 1 to 3o.
It is formed on the lower surface 31 of. 1 All Pigmen h 3
A groove 36 is formed on the outer periphery of the groove 36 to which an elastic ring (not shown) is FM attached.

Therefore, before pressing, each pigment +-30 is in a retracted position radially outward as shown on the left side of FIG. 7 and FIG.・is the 7th
As shown on the right side of the figure and @8, it protrudes radially outward and engages with the hole 1-1 to prevent the elastic body F from digging in.

Note that the elastic ring fitted in the groove 3G serves to prevent each segment from returning to the retracted position shown on the left side of FIGS. 7 and 8.

As described above, according to the present invention, a plurality of pigments 1- are installed between the first ring element and the second ring element, and both of the pigments 1- are retarded. Since the taper is formed to move outward in the radial direction when the elastic body is pressed, the tapered part expands outward in the radial direction and engages with the hole when the elastic body is suppressed and deformed, thereby preventing the elastic body from digging in. It can be prevented.

Therefore, the life of the elastic body is extended, and it can be used many times for hole-drilling operations.

[Brief explanation of drawings]

Figure 1 is a side view of the non-blasting hard rock crushing equipment that carried out Kihatsuro, Figure 2 is a side view similar to Figure 1 showing the place where hard rock is being crushed, and Figure 3 is a side view of the non-blast hard rock crushing equipment that carried out the Kihatsuro. FIG. 4 is a side view showing an example of the washer to be used. FIG. 4 is a side view showing the washer shown in FIG. 3 when a pressing force is applied. FIG. 5 is a sectional side view showing another example of the washer. 6 is a plan view of FIG. 5, FIG. 7 is a cross-sectional side view similar to FIG. 5 showing another embodiment of the washer, and FIG.
FIG. 9 is a front view of the L-cumen 1- shown in the direction of the arrow ■ in FIG. 8, and FIG. 10 is a plan view of the segment as seen in the direction of the arrow X in FIG. R... Hard rock 1-1... Hole E... Elastic body 1.
... Tension Rond 2... Cylinder 3... Piston 7... Ramge Air 8... First washer 10... Second washer 11.21... First ring element 12.22. ...Second ring element 13a
, 13b, 24a, 24b, 30--Segment 14a, 14b, 21a, 22a. 25a 125b, 34.35--Tapered surface Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 2 Fig. 7 Fig. 6

Claims (1)

[Claims] On hard rock? A tension rod and a ram chair are inserted into the hole made by iQ, and an elastic body is installed between the tension rod and ram chair, and the elastic body is pushed in the axial direction by moving the tension rod and ram chair relatively. In a non-blasting hard rock crushing device that crushes hard rock by deforming an elastic body radially outward and pressing a hole, the top and bottom of the elastic body engage with the first and second washers. J3, those washers are attached to the first and second ring elements and their first
and a plurality of segments numbered 1 to 1 disposed between the first and second ring elements, the segments extending radially outward as the first and second ring elements move toward each other. A non-blasting hard rock crushing device that is characterized by the fact that it moves in both directions.