JPH04112986U - rock crushing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rock crushing device that has a drive member with sufficient loading force and a large amount of movement when crushing rocks. [Structure] A pair of loading plates 2 with recesses 2a facing each other
and a drive member 1 made of a shape memory alloy disposed within a space defined by these recesses 2a, 2a. This drive member 1 expands in the direction in which the pair of loading plates 2, 2 face each other due to temperature changes, and has a slit groove 10 midway in the direction in which they face each other.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention is applicable to rocks, rocks, and other rocks including strong objects such as concrete structures. Regarding rock crushing equipment that crushes stones, please refer to rock crushing equipment that uses shape memory alloys. It's about location.

0002

[Conventional technology]

Conventional rock crushing devices of this type include Japanese Patent Application Laid-Open No. 60-115794 and Japanese Patent Application Laid-open No. 60-115794. No. 1-169600, etc., and both of these have heating means in the center. The heating means is surrounded by a shape memory alloy, and the heating means is surrounded by a shape memory alloy. This shape memory alloy is then heated by the heating means described above. When heated, the rock is deformed in the radial direction due to the change in the bending ratio of the shape memory alloy due to temperature changes. It is used to crush stones, etc.

0003

[Problem that the idea aims to solve]

However, rock crushing equipment using the conventional method described above has not yet been put into practical use and widespread use. Not yet. In other words, the deformation of the shape memory alloy due to temperature changes attempts to crush rocks, etc. In order to obtain a large force (hereinafter referred to as the loading capacity of shape memory alloys), it is necessary to It is desirable that the alloy be a block-like solid mass with as large a mass as possible. , conventional rock crushing equipment has a hollow part in the center that houses the heating means. and shape recovery by changing the bending ratio, sufficient crushing force (hereinafter referred to as The disadvantage was that the loading force (hereinafter referred to as "loading force") was not obtained.

0004 In addition, the existence of the hollow portion described above is a cause for the release of stress, although it depends on its cross-sectional shape. This not only causes the load capacity to not be fully demonstrated, but also causes the external shape to be deformed due to thermal changes ( When the diameter is expanded by recovering the shape, the inner diameter of this hollow part is also expanded, and the heating means This caused problems in the conduction of temperature to the shape memory alloy. Especially this kind of rock Stone crushing devices are usually installed in parallel and used simultaneously to crush rocks, etc. However, there is a gap between the heating means and the inner diameter surface of the hollow part surrounding the heating means. If a gap is created due to the diameter, not only will the efficiency of heat conduction decrease, but also unspecified deviation of the heating means will occur. This causes variations in heating efficiency and prevents multiple rock crushing devices from deforming at the same time. Sometimes, the comprehensive loading capacity of multiple rock crushers cannot be obtained efficiently. It had the disadvantage of causing

[0005] In addition, recent research has developed solid block-like shapes to solve these drawbacks. Sufficient loading force using shape reversion to change the distance between opposing end faces of shape memory alloys A crusher that can obtain In this case, the loading force is certainly sufficient, but the stroke of the block to return to its shape is small. Although cracks appear in the crushed rock, the rock to be crushed may not be divided sufficiently.

[0006] Therefore, the technical problem of this invention is to form a shape memory alloy into a block shape and a block shape. The structure has a slit in the center that is perpendicular to both end faces, ensuring sufficient loading force and transfer. The object of the present invention is to provide a rock crushing device that also has a large amount of movement.

[0007]

[Means to solve the problem]

According to the present invention, there is provided a pair of loading plates with recesses facing each other, and a load plate defined by the recesses. a drive member made of a shape memory alloy disposed in a space, the drive member being , due to temperature change, the pair of loading plates expand in opposite directions, and the pair of loading plates expands in opposite directions. A rock crushing device is obtained which is characterized by having a hole midway in the direction.

[0008] According to the present invention, there is provided a pair of loading plates with recesses facing each other, and a load plate defined by the recesses. a plurality of driving members made of a shape memory alloy disposed in a space in which the plurality of driving members are arranged; The driving member expands in the opposite direction of the pair of loading plates due to temperature change. Also, at least one of the plurality of driving members has a hole halfway in the opposing direction. A rock crushing device is obtained which is characterized by having the following.

[0009]

[Effect] In this invention, when a rock crushing device is inserted into a bore hole, a pair of loading plates are used. The distance is determined by a driving member inserted into the recessed space of the pair of loading plates. ing. In other words, below the martensitic transformation temperature, the driving member So, it has been reduced. During rock crushing, the drive member is heated above the reverse transformation temperature and The rock is crushed by elongating along the direction and widening the distance between the facing plates.

0010

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows a rock crushing device according to an embodiment of the present invention, where (a) is a front view and (b) is a front view. FIG. In the figure, the rock crushing device has one arcuate side and a concave side opposite to this one side. A pair of loading plates 2 having portions 2a, and these loading plates 2, 2 having recessed portions 2a, 2a of each other. By facing each other, the space defined by these recesses 2a, 2a is A plurality of drive members 1, 1, 1 made of a cylindrical shape memory alloy are mounted on the ing. This drive member 1 is of a conventionally known composition having a cylindrical shape, and is particularly preferably In most cases, TiNi alloys are used.

[0011] As shown in FIG. 2(a), this driving member 1 has a slit groove 10 in a part of the columnar shape. I'm being kicked. This drive member is connected to the martensitic transformation temperature of the alloy used. When compressed and deformed in the vicinity, the deformation occurs as shown in FIG. 2(b). Use this to reverse the alloy When heated to a temperature higher than the initial temperature, the shape is restored again as shown in Figure 2(a). . As an example, if the length of the column in Figure 2(a) is 35 mm, the length of the column in Figure 2(b) is Even if the length is deformed to 30 mm, the shape will be completely restored by heating. this is , compared to the case where a columnar solid body is compressed, the deformation is reduced due to the bending deformation of the slit groove. This is because the amount becomes large.

0012 Fig. 2(c) shows another example of the drive member 1 (the shape of the deformed portion is indicated by the broken line 1'). However, the amount that this drive member can deform near the martensitic transformation temperature is approximately 6 The limit is about %, and if it exceeds that, it will not completely return to its original state even if heated above the reverse transformation temperature. do not have. As an example, a 32mm column with this type of shape can only be compressed by about 2mm. be.

[0013] FIG. 3 shows the driving member shown in FIG. 2(b) and FIG. 2(c) without the slit groove 10. The relationship between the recovery force and the recovery stroke in the reverse transformation of the drive member was shown. In the figure, the song Line 31 is the drive member shown in FIG. 2(b), and curve 32 is the slit groove shown in FIG. 2(c). 10, respectively. As is clear from FIG. 3, the restoring force of the driving member shown by curve 31 is similar to curve 32. Although it is inferior, the sustained recovery power and recovery stroke are overwhelmingly superior. When crushing rocks, the method of crushing differs depending on the nature of the target structure. sand In other words, if sufficient force is not required for the initial loading, For crushing, etc.), the driving member 1 shown in Fig. 2(b) is sufficient, and the initial loading force is not required. If the drive member shown in Figure 2(b) and the drive member shown in Figure 2(c) need to be moved, ) is required, and the combination of drive members that do not have the slit groove 10 is required. Therefore, the combination of drive members is selected appropriately. In addition, as a method of actually crushing rocks, we used a pre-deformed drive member 1 in Figure 1 ( a) The rock crushing device set as in (b) is inserted into a borehole or groove in the rock. This member 1 is heated with electricity by a heater or has shape memory by hot water, etc. This can be done by heating Alloy 1 above the reverse transformation temperature. In the embodiment of the present invention, the driving member 1 is columnar and has a slit groove 10 in the middle. However, the gist of the present invention is that the recovery of the slit-shaped bending deformation is perpendicular to the loading plate 2. Since this is a common practice, it may be made by gluing two boards together and restraining both ends. Of course, a lantern-shaped one showing the character ``Taku'' would also be fine.

[0014]

[Effect of the idea]

From the above explanation, according to the present invention, the drive member can be moved with sufficient loading force and movement amount. By adopting a structure consisting of a large shape memory alloy, the practical range of rock crushing equipment can be expanded. can be done.

[Brief explanation of drawings]

[Fig. 1] A diagram showing an embodiment of the rock crushing device of the present invention.
(a) is a front view, and (b) is a side view.

FIGS. 2(a) and 2(b) are perspective views of a driving member used in an embodiment of the present invention, and FIG. 2(c) is a perspective view showing another example of the driving member.

3 is a diagram showing the recovery force and recovery stroke when the drive member made of the shape memory alloy shown in FIG. 2 recovers its shape; FIG.

[Explanation of symbols]

1 Drive member 2 Loading plate 2a recess 10 Slit groove 15 Outer peripheral surface

Claims (2)

[Scope of utility model registration request] 1. A pair of loading plates having recessed portions facing each other, and a driving member made of a shape memory alloy disposed within a space defined by the recessed portions, wherein the driving member is configured to move between the pair of loading plates due to a temperature change. A rock crushing device characterized in that the loading plate extends in a direction opposite to the loading plate, and has a hole halfway in the facing direction. 2. A pair of loading plates having recesses facing each other, and a plurality of drive members made of a shape memory alloy arranged in a space defined by the recesses, wherein the plurality of drive members The rock crushing device is characterized in that the rock crushing device extends in the opposing direction of the pair of loading plates, and at least one of the plurality of drive members has a hole midway in the opposing direction.