JP2535559Y2 - Rock crusher - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to an improvement of a rock crusher used for crushing tunnel rock and other hard rocks and concrete (in this application, these are simply referred to as rocks). Things.

[Prior Art] Conventionally, as this kind of rock crushing, a method using a blasting machine, an excavator, a static crushing agent, a hydraulic wedge, a water jet, or the like has been practically used.

"Problems to be solved by the invention" However, the method using the conventional blast described above is dangerous,
Problems such as noise and vibration, the method using an excavator
The problem of the space for the excavator to be brought in due to vibration, the problem that the method using the static crushing agent takes too much time until crushing, the method using the hydraulic wedge requires considerable boring before using the hydraulic wedge. Need to use a large hydraulic supply source, and the method using a water jet has problems such as noise and danger.Each of the above methods needs further improvement. It is pointed out that there is.

[Purpose] In view of the above, the present invention has been made in view of the above circumstances, and is a simple device that uses as little boring as possible, has little noise and vibration, has good operability, has a short crushing cycle, and has a reliable and safe rock. It is intended to provide a crusher.

[Means for Solving the Problems] In accordance with the above object, the configuration of the present invention, which has the scope of the above-mentioned utility model registration claims,
Concave portions 11, 11 are formed in the inner surfaces of a pair of
Are provided between the two loading plates 10, 10, and shape memory alloy rods 1, 1, 1,... For recovering the shape in the direction of increasing the distance between the two loading plates 10, 10 Each of the loading plates 10, 10 was fitted and arranged in the recesses 11, 11, and furthermore, a technical measure was taken in which the loading plates 10, 10 were connected with steel wires 2, 2, 2,... Slightly slackened. Things.

[Operation] Therefore, the rock crusher of the present invention cuts a borehole or a groove shown by a broken line in FIG. 2 and inserts the rock crusher of the present invention into the hole. When the rock crusher is inserted, both loading plates 10, 10a are inserted so that the outer surfaces thereof are in contact with the bore holes or the wall surfaces of the grooves, and the shape memory alloy rods 1, 1, 1. Alternatively, the positional relationship is such that the shape is recovered in the direction in which the groove is pushed and spread.

Then, heat energy is applied to recover the shape of the shape memory alloy rods 1, 1, 1,.... In the case of this embodiment, the heating wire 4 (see FIG. 3) is energized from a power source (not shown) through the lead wires 8a and 8b (see FIG. 1), and the shape memory alloy rods 1, 1, 1.・ ・ Was heated.

Then, the shape memory alloy rods 1, 1, 1,... Exhibit a function of recovering the shape, expanding the borehole or groove from the inside thereof, and crushing the rock.

Steel members 2, 2, 2, ... are always connected so that the components of the rock crusher of the present invention are not separated, and when rock is crushed, the slack extends, and the shape memory alloy rod 1, 1, 1.
・ ・ It has the effect of not hindering the shape recovery.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numerals 10 and 10 denote loading plates.
A pair of the pair 10 is provided, and concave portions 11 are provided on the inner surface side thereof.

The embodiment shown in FIGS. 1 to 3 is an example in which a rock is used by drilling a borehole 9 having a circular cross section as shown in FIG. 2 in the rock, and the outer surfaces of the load plates 10 and 10 are formed in the borehole 8. It has an arc-shaped curved surface that fits the peripheral surface. When used by inserting into a bore hole or groove having a rectangular cross section, the outer surfaces of the loading plates 10 and 10 may be flat,
In practice, the borehole 9 having a circular cross section is easily drilled and the boring amount may be minimized. Therefore, in the present application, only the case where the borehole 9 is inserted into the bore hole 9 having a circular cross section will be described.

The inner surfaces of the loading plates 10, 10 are flat, and the inner surfaces are provided with recesses 11, 11, respectively.
Numerals 1 and 11 are used to fit both ends of a shape memory alloy rod 1, 1 and 1 described later, respectively.
As long as the ends of 1,1,1 can be fitted (they can be loosely fitted), in this embodiment, the shape memory alloy rods 1,1,1 are held by the holder 3 having a heating source. At least,
Since it is arranged between the load plates 10 and 10 described above, the holder 3 has a shape that can be fitted therein.

Further, the depth of the recesses 11 may be appropriately set, but is set to be deeper than the dimensional difference when the shape memory alloy rods 1,1,1 have recovered shape, and the shape memory alloy rods 1,1,1 are set. It is desirable not to fall off by the expansion and contraction of 1.

The load plates 10, 10 are formed of a steel material or the like that does not easily deform even when a strong force is applied.

The shape memory alloy rods 1, 1, 1... For recovering the shape in the direction of increasing the distance between the two loading plates 10, 10 are provided between the two loading plates 10, , 11 respectively.

In the illustrated example, the shape memory alloy rods 1,1,1 ...
・ The shape recovers to the state of extending in the axial direction.
It is desirable to use a reciprocating type that expands when heated and contracts to its original deformed state when returned to room temperature. The shape memory alloy rods 1, 1, 1... May simply be fitted at both ends thereof into the recesses 11, 11, but in this embodiment, the rods are stored in the holder 3 as described above. The holder 3 and the holder 3 are fitted into the recesses 11 and 11, respectively. That is, the holder 3 has the same size as or slightly lower than the height of the shape memory alloy rod 1, and has openings 6, 6, 6,... And a heating wire 4 is provided on the outer peripheral portion of the opening 6, 6, 6,.
It is a matter of course that lead wires 8a and 8b extending outside the holder 3 are connected from the heating wire 4. It is needless to say that the holder 3 may be omitted. In this case, a cord heater or the like (not shown) is used as a heating source instead of the heating wire 4 embedded in the holder 3.
What is necessary is just to mount so that 1,1, ... may be wound.

Further, the loading plates 10, 10 are connected to each other by a steel material 2 which is slightly slackened. Both ends of the steel material 2 are fixed to the loading plates 10, 10 by appropriate means such as soldering. The steel material 2 has its dimensions and dimensions so that it will not be pulled and broken even if the shape memory alloy rod 1 recovers its shape.
Set the material and slack amount. The amount of sag is set so that the shape memory alloy rods 1, 1, 1... Do not fall out of the recesses 11, 11 even if the steel material 2 extends straight.

FIGS. 4 and 5 show the load plates 10 and 1 described above.
Loading plates 10a, 10a and shape memory alloy rods equivalent to 0
This is an embodiment in which wedge plates 12, 12 are interposed between 1, 1, 1,.

The loading capacity of the shape memory alloy rod 1 accompanying the shape recovery has a force that can be used sufficiently for rock crushing as a result of actual measurement, but the size of the shape recovery is small, so the case of the embodiment shown in FIGS. If there is a clearance between the rock crusher of the present invention and the borehole 9 or if the inner surface of the borehole 9 is rough, the crushing ability due to this shape recovery will be attenuated. Load plates 10a, 10a with wedge plates 12, 12 to prevent in advance
Is pressed against the inner peripheral surface of the bore hole 9 in advance.

That is, the wedge plates 12, 12 are provided with the concave portions 11, 11 on the inner surface thereof, and the outer surface side is formed as a wedge slope. The outer surfaces of the loading plates 10a, 10a are first.
3 to 3, the inner surface is a wedge slope paired with the wedge slope of the wedge plates 12 and 12.

The two loading plates 10a, 10a are connected by a slightly slackened steel member 2. In the case of this embodiment, the two wedge plates 12, 12 are replaced with the two loading plates 10a, 10a.
The spaces may be connected by a steel material 2 which has been slightly slackened. However, in this case, the connectivity between the two wedge plates 12 and 12 and the two loading plates 10a and 10a is lost, so the inner surfaces of both loading plates 10a and 10a are provided with dovetail grooves (not shown).
The wedge plates 12, 12 may be fitted into the dovetail groove and connected so as to be movable only in the longitudinal direction.

In the case of the embodiment shown in FIGS.
The object shown in the figure is inserted into the borehole 9 with the right end of the figure first. Then, both loading plates 10a, 10a are
Of the wedge plates 12, 12 to the holder 3 and the shape memory alloy rod 1, while the load plates 10a, 10a are fixed so as not to advance to the back of the hole (with the ends of the loading plates 10a, 10a abutting against the bottom of the bore hole 9). Move 1,1, ... to the back side of the borehole (right side in the figure). Then, both the loading plates 10a, 10a are widened by the wedge action and pressed against the borehole 9.

In the drawing, reference numeral 7 denotes a drawer string which fixes one end of a steel wire to an appropriate place such as the loading plate 10 and is used to take out the rock crusher of the present invention from the crushing end portion.

[Effects of the Invention] Since the present invention is as described above, the structure is extremely simple, and the loading capacity by shape recovery of the shape memory alloy rod 1 is large. Moreover, if electric heating is used for the shape memory alloy rod 1, the power supply of several volts or more is sufficient, and a large operation device is not required, so that the operability is good and safe. Although the shape memory alloy rod 1 varies depending on the amount of heat source supplied, it is 1 per minute.
It is possible to provide a rock crusher that can recover a shape of up to 6 mm and requires a short crushing cycle.

In particular, in the present invention, since the two loading plates 10 and 10 are connected by the slightly slackened steel members 2, 2, 2..., The respective components do not fall apart, and furthermore, the shape memory alloy rods 1, 1, 1
... can also cope with deformation due to shape recovery, etc., and in a state where crushing has been completed, that is, shape memory alloy rods 1, 1, 1, ...
・ Since it is possible to integrally handle even if the shape is recovered and stretched, a rock crusher with good operability can be provided.

[Brief description of the drawings]

1 is a front view showing one embodiment of the rock crusher of the present invention, FIG. 2 is a side view, FIG. 3 is a partially cutaway perspective view, FIG. 4 is a sectional view showing another embodiment, FIG. 5 is a sectional view taken along line AA. 1 ... shape memory alloy rod, 2 ... steel material 10 ... loading plate, 11 ... recess

Claims (1)

(57) [Scope of request for utility model registration] A concave portion is provided on an inner surface of a pair of opposed loading plates, and a distance between the loading plates is increased between the loading plates. , Which are shape-recovering in the direction, are arranged with their both ends fitted into the recesses 11, 11, respectively, and furthermore, there is some slack between the loading plates 10, 10. A rock crusher connected with steel wires 2,2,2 ...