JP2524335Y2 - Shape memory alloy holder for rock crusher - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention utilizes the shape recovery force of a shape memory alloy block to store rock in tunnels and other hard rocks and concrete (in this application, these are simply referred to as rocks). The present invention relates to an improvement of a shape memory alloy holder of a rock crusher used for crushing of steel.

[Prior art] Conventionally, there has been proposed a method of crushing rock by using the shape recovery force of a shape memory alloy block instead of using a blasting machine, an excavator, a static crushing agent, a hydraulic wedge, a water jet, and the like. This type of rock crushing method uses a rock crusher with a configuration in which a plurality of shape memory alloy blocks are sandwiched between a pair of loading plates, and an electric heater wire is wound around the shape memory alloy blocks. Then, the rock crusher is inserted into a borehole drilled in the rock, and the electric heater wire is energized to heat the shape memory alloy block group, and the shape memory alloy block group recovers its shape and rocks from the borehole. The rocks are cracked by the force of pushing and crushing.

[Problems to be Solved by the Invention] However, in the conventional rock crusher described above, a plurality of shape memory alloy blocks are sandwiched between a pair of loading plates during use, and an electric heater is used for each of the shape memory alloy blocks. It is necessary to wind the wire, and after crushing the rock, each shape memory alloy block, the loading plate, and the electric heater wire are separated, and it takes a lot of labor to collect them. Had disadvantages.

[Purpose] Accordingly, the present invention has been made in view of the above-mentioned drawbacks, and is easy to assemble, and furthermore, a plurality of shape memory alloy blocks and an electric heating tool are integrally held, and the work of a rock crusher is performed. It is an object of the present invention to provide a shape memory alloy holder for a rock crusher, which can improve the properties.

[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,
In the holder body 10 made of a rectangular parallelepiped metal block having good thermal conductivity, holes 11, 11, 11 for storing the shape memory alloy blocks 1, 1, 1,...
.. Are provided with technical means that are vertically opened and juxtaposed so as to communicate from the upper surface 10a to the lower surface 10b of the holder body 10.

Further, the present invention further provides a shape memory alloy block 1,1,1 having a rectangular parallelepiped metal block having good heat conductivity, and a shape memory alloy block 1,1,1,
... of the holder main body 10
Are vertically opened and communicated with each other from the upper surface 10a to the lower surface 10b, and the holder body 10 is provided with insertion holes 12, 12, 12,... For the heater rods 2, 2, 2,. From the one side surface 10c in the longitudinal direction of the holder body 10 to the other side surface 10d, the storage holes 11, 1
Technical means were taken by excavating horizontally so as not to intersect with 1,11 ...

Further, the present invention provides a shape memory alloy block 1, 1, 1,... Which recovers the shape of the holder body 10 made of a rectangular parallelepiped metal block having good heat conductivity so as to increase its height in the vertical direction.
Are provided on the upper surface of the holder body 10.
The holder body 10 is provided with insertion holes 12, 12, 12,... For the heater rods 2, 2, 2,. From the one side surface 10c in the longitudinal direction of the main body 10 to the other side surface 10d, the storage holes 11, 11, 11,.
..Excavation in the horizontal direction so as not to intersect with, and screw holes 13,13,13 of fixing screws 3,3,3,... In both short side surfaces 10e, 10f of the holder body 10. .. Are formed so that the tips of the screw feet 3a of the respective fixing screws 3 penetrate into the respective storage holes 11.

"Action" Therefore, the shape memory alloy holder of the rock crusher of the present invention
By inserting and storing the shape memory alloy blocks 1 in the respective storage holes 11, a plurality of shape memory alloy blocks 1 can be set at predetermined positions, and the shape memory alloy blocks 1 Since it is performed in the hole 11, it exhibits an action of preventing a displacement such as falling down due to shape recovery.

Further, the heater rod 2 is inserted into each insertion hole 12. Since the heater rod 2 is inserted into the deep insertion hole 12, it is merely inserted (of course, the heater rod 2
After insertion, the opening of the insertion hole 12 may be closed with a heat-resistant sealing material such as cement while leaving the lead wire. ) The function of being integrally connected to the holder body 10 to such an extent that the holder body 10 does not come off in normal use.

When the shape memory alloy block 1 is fixed with the fixing screw 3, each of these shape memory alloy holders is
It has the function of being integrally connected to the unit 10.

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 set as appropriate, 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 are inserted and arranged.

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. This steel material 2 is fixed to the loading plates 10 and 10 at both ends 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 configuration is extremely simple, and the loading capacity by shape recovery of the shape memory alloy rod 1 is large. There is no need to worry about vibration, and if electric heat is used to recover the shape of the shape memory alloy rod 1, a power supply of several volts or more can be prepared, and large-sized operation equipment is not required, so operability is good and safe. The shape memory alloy rod 1 can provide a rock crusher which can recover a shape of 1 to 6 mm per minute and has a short crushing cycle, though it differs depending on the amount of heat source supplied.

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]

FIG. 1 is a perspective view showing an embodiment of a shape memory alloy holder of the rock crusher of the present invention, FIG. 2 is a cross-sectional view of the rock crusher using the present invention, and FIG. It shows. 1 shape memory alloy rod, 2 steel material 10 loading plate, 11 recess

Claims (3)

(57) [Scope of request for utility model registration] 1. A holder body 10 made of a rectangular parallelepiped metal block having good heat conductivity, and a storage hole 11 for shape memory alloy blocks 1, 1, 1,... , 11, 11,... Are vertically open and juxtaposed so as to communicate from the upper surface 10a to the lower surface 10b of the holder main body 10. A shape memory alloy holder for a rock crusher. 2. A holder body 10 made of a rectangular parallelepiped metal block having good heat conductivity, and a storage hole 11 for shape memory alloy blocks 1, 1, 1,... , 11, 11, ... are vertically opened and juxtaposed to communicate from the upper surface 10a to the lower surface 10b of the holder body 10, and the holder body 10 includes heater rods 2, 2, 2, ... Insertion hole 12,
..., one longitudinal side surface 10c of the holder body 10.
From the other side 10d to the storage holes 11, 11, 11 ...
The shape memory alloy holder of the rock crusher that is excavated horizontally so that it does not intersect. 3. A holder body 10 made of a rectangular parallelepiped metal block having good thermal conductivity, and a hole 11 for storing shape memory alloy blocks 1, 1, 1,... , 11, 11, ... are vertically opened and juxtaposed to communicate from the upper surface 10a to the lower surface 10b of the holder body 10, and the holder body 10 includes heater rods 2, 2, 2, ... Insertion hole 12,
..., one longitudinal side surface 10c of the holder body 10.
From the other side 10d to the storage holes 11, 11, 11 ...
Excavation in a horizontal direction so as not to intersect, and furthermore, fixing screws on both side surfaces 10e and 10f in the short direction of the holder body 10.
Rocks formed by screw holes 13, 13, 13, ... of 3, 3, 3, ... so that the tips of the screw feet 3a of the respective fixed screws 3 penetrate into the respective storage holes 11. Shape memory alloy holder for crusher.