JP6963718B1 - Breaking rock tool and crushing method using the tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently crush a object to be processed such as a rock, a bedrock or a concrete structure by using a rock breaking tool capable of efficiently and with a relatively large force and the tool. Provide a possible crushing method. SOLUTION: In the present invention, a first blade member moves toward the bottom surface together with the movable plate portion by applying an external force toward the bottom surface of the movable plate portion. While sliding along the first base-side inclined surface and the first plate-side inclined surface, it moves in the first radial direction Y1 to press the inner wall of the drilled hole 21, and the second blade member presses the second base-side inclined surface. And while sliding along the second plate side inclined surface, it moves in the second radial direction Y2 and presses the inner wall of the drilled hole 21. [Selection diagram] Fig. 2

Description

The present invention relates to a rock breaking tool for breaking a treatment object such as bedrock, rock, and a concrete structure, and a crushing technique for crushing the treatment target using the tool.

Conventionally, wedge members (sometimes called wedges) and blade members (sometimes called liners) have been used as rock breaking tools for breaking rocks, rocks, concrete structures, and other objects to be treated. The so-called seri arrow was known. For example, Patent Document 1 describes a technique for breaking a rock to be processed by a rock breaking tool that combines a wedge member and a blade member. More specifically, a hole is formed in the bedrock in advance with a rock drill, a rock breaking tool that combines a wedge member and a blade member is inserted into the hole, and the rear end of the wedge member is hit with a breaker to break the rock. The bedrock is crushed.

With the above-mentioned rock breaking tool, it is possible to use a work machine as an auxiliary for the work of inserting each blade member and wedge member into the drilling hole and the work of recovering each blade member and wedge member after crushing the bedrock. .. However, in the crushing work using the rock breaking tool, there are many manual works. For example, it was necessary to insert the blade members individually into the holes before hitting with a breaker, and to separate the blade members from each other in the holes to form a gap for inserting the tip of the wedge member. .. Further, after the crushing is completed and the wedge member is pulled out from the blade member, the position of each blade member separated from each other in the crushed region is confirmed, and manpower is also required to collect each individually. It is necessary to perform such manual work for each rock breaking, which has been one of the main factors that reduce the efficiency of the crushing process using the rock breaking tool.

Therefore, the applicant of the present application has a connecting body in which the first lower arm and the first upper arm are connected by the first connecting movable portion, and the second lower arm and the second upper arm between the base portion and the bracket portion. Was created (see Patent Document 2). After inserting this rock breaking tool into the drilling hole, when an external force is applied to the bracket portion toward the bottom surface of the drilling hole, the first connecting movable portion and the first connecting movable portion and the bracket portion descend toward the bottom surface. The second connecting movable portion moves in the first radial direction and the second radial direction, respectively, and presses the inner wall of the drilled hole to execute the rock splitting treatment. As a result, it has become possible to efficiently split rocks, rocks, concrete structures, and other objects to be treated.

Japanese Unexamined Patent Publication No. 2006-225925 (Fig. 3) Patent No. 6817512

In the rock breaking tool described in Patent Document 2, the base portion and the bracket portion are connected by two connecting bodies, and the link mechanism of these connecting bodies is used to connect the first connecting movable portion and the second connecting portion according to the movement of the bracket portion. The movable portion is moved in the first radial direction and the second radial direction, respectively, to press the inner wall of the drilled hole. Therefore, the external force that can be applied to the bracket portion is limited to a relatively small one that does not damage the link mechanism, and the usable range of the rock breaking tool is limited to the object to be treated that can break the rock with a relatively small force.

The present invention has been made in view of the above problems, and a rock breaking tool capable of breaking a rock, a bedrock, a concrete structure, or the like to be treated efficiently and with a relatively large force, and the tool are used to break the rock. It is an object of the present invention to provide a crushing method capable of crushing an object efficiently.

The first aspect of the present invention is a rock breaking tool, in which a base portion supported by the bottom surface of the drilling hole formed in the object to be treated and a base portion projecting from the base portion toward the opening of the drilling hole in an arrow shape. A wedge member on the base side, a movable plate portion provided so as to be movable along the depth direction of the drilling on the opening side of the drilling hole, and an arrow-shaped protrusion from the movable plate portion toward the bottom surface of the drilling hole. The plate-side wedge member, the first base-side inclined surface provided on the side surface of the base-side wedge member in the first radial direction in the radial direction of the hole, and the plate-side wedge member in the first radial direction. Between the first plate-side inclined surface provided on the side surface, the first blade member slidably arranged with respect to the first base-side inclined surface and the first plate-side inclined surface, and inside the drilling hole. A second base-side inclined surface provided on the second radial side surface of the base-side wedge member in the radial direction of the hole, and a second plate-side inclined surface provided on the second radial side surface of the plate-side wedge member. In between, the second blade member slidably arranged with respect to the second base side inclined surface and the second plate side inclined surface, and the first blade member and the second blade member are cut with respect to the base side wedge member. A base-side connecting portion that is movably connected in the radial direction of the hole, and a plate-side connecting portion that movably connects the first blade member and the second blade member to the plate-side wedge member in the radial direction of the hole. As the plate-side wedge member moves toward the bottom surface together with the movable plate portion by applying an external force toward the bottom surface of the movable plate portion, the first blade member tilts toward the first base side. While sliding along the surface and the inclined surface on the first plate side, it moves in the first radial direction to press the inner wall of the drilled hole, and the second blade member is the inclined surface on the second base side and the inclined surface on the second plate side. It is characterized in that it moves in the second radial direction while sliding along the above and presses the inner wall of the drilled hole.

Further, a second aspect of the present invention further comprises a long shaft body extending along the drilling hole on the opening side of the drilling hole with respect to the movable plate portion in the rock splitting tool according to the first aspect. The first end face of both end faces of the long shaft body facing the movable plate portion abuts on the movable plate portion, while the second end face opposite to the first end face receives an external force, so that the long shaft body can move the external force. Transmit to the plate part.

A third aspect of the present invention is, in the rock breaking tool according to the second aspect, of the facing surface of the movable plate portion facing the first end surface of the long shaft body and the first end surface of the long shaft body. One is finished to be concave and the other is finished to be convex so that they can be slidably contacted with each other.

Further, a fourth aspect of the present invention is provided in the rock breaking tool according to the second or third aspect, in addition to being provided so as to project in the first radial direction from a region near the second end surface of the side surface of the long shaft body. The first engaging portion is provided with a first inclined surface that can engage with the circumference of the drilled opening at the tip portion protruding in the one radial direction, and the second from the region near the second end surface of the side surface of the long shaft body. The first inclination is provided with a second engaging portion which is provided so as to project in the radial direction and has a second inclined surface which is provided with a second inclined surface which can engage with the circumference of the opening of the drilled hole at the tip portion protruding in the second radial direction. The surface and the second inclined surface are inclined so that the amount of protrusion from the neighboring region increases as the amount of protrusion from the vicinity region progresses from the first end surface to the second end surface, and the movable plate portion and the plate side wedge member are applied by applying an external force. As the long shaft body moves toward the bottom surface, the position of the first inclined surface and the second inclined surface that engages with the periphery of the hole opening moves toward the second end surface side. The 1 engaging portion presses the circumference of the hole opening in the first radial direction, and the second engaging portion presses the circumference of the drilling opening in the second radial direction.

Further, in the fifth aspect of the present invention, the rock breaking tool according to the first aspect is inserted into the drilling hole with the first blade member and the second blade member in close proximity to each other, and the base portion is placed on the bottom surface. By applying an external force toward the bottom surface to the movable plate part of the split rock tool inserted in the drilling process and the process of placing, the distance between the movable plate part and the base part inside the drilling is shortened and the distance is increased. It is characterized in that the first blade member and the second blade member are provided with a step of pressing the inner wall of the drilled hole to crush the periphery of the drilled hole according to the shortening.

Further, in the sixth aspect of the present invention, the first crushing rock tool having the same configuration as the crushing rock tool according to the first aspect is inserted into the hole in a state where the first blade member and the second blade member are close to each other. Then, following the step of placing the base portion of the 10th split rock tool on the bottom surface and the insertion of the 10th split rock tool into the drilling hole, the 20th split rock tool having the same configuration as the split rock tool according to claim 1. The process of inserting the first blade member and the second blade member into the drilling hole in a state where the first blade member and the second blade member are close to each other and placing the base portion of the 20th split rock tool on the movable plate portion of the 10th split rock tool, and drilling. By applying an external force toward the bottom surface to the movable plate portion of the 20th split rock tool inserted in, the distance between the movable plate portion and the base portion in each of the 10th split rock tool and the 20th split rock tool inside the drilling hole. It is characterized in that the first blade member and the second blade member are provided with a step of pressing the inner wall of the drilled hole to crush the periphery of the drilled hole in accordance with the shortening of the distance.

Further, in the seventh aspect of the present invention, the moving direction of the first blade member and the second blade member in the 20th split rock tool is different from the moving direction of the first blade member and the second blade member in the 10th split rock tool. As described above, the 20th split rock tool is placed on the movable plate portion of the 10th split rock tool.

Further, the eighth aspect of the present invention is a crushing method of crushing the periphery of the drilled hole by using the rock breaking tool according to the second or third aspect, in which the first blade member and the second blade member mutually. In a state of being close to each other, the base part, the base side wedge member, the movable plate part, the plate side wedge member, the first blade member, the second blade member, the base side connecting part and the plate side connecting part are integrally inserted into the drilling hole. The process of placing the base portion on the bottom surface, the process of inserting the long shaft body into the drilling hole and bringing the first end surface of the long shaft body into contact with the movable plate portion, and the process of moving the first end surface of the long shaft body. By applying an external force to the second end surface of the long shaft body in contact with the plate portion, the distance between the movable plate portion and the base portion inside the drilling is shortened, and the distance is reduced according to the shortening of the distance. It is characterized by including a step of pressing the inner wall of the drilled hole to crush the periphery of the drilled hole by pressing the 1-blade member and the second blade member.

Further, the ninth aspect of the present invention is a crushing method of crushing the periphery of the drilled hole by using the rock breaking tool according to the fourth aspect, in which the first blade member and the second blade member are close to each other. In this state, the base portion, the base side wedge member, the movable plate portion, the plate side wedge member, the first blade member, the second blade member, the base side connecting portion and the plate side connecting portion are integrally inserted into the drilling hole to form the base. In the process of placing the portion on the bottom surface, the long shaft body is inserted into the drilling hole to bring the first end surface of the long shaft body into contact with the movable plate portion, and the first inclined surface and the first inclined surface of the first engaging portion. 2 The step of bringing the second inclined surface of the engaging portion into contact with the periphery of the opening of the drilled hole, and the step of bringing the first end surface of the long shaft body into contact with the movable plate portion, and the first inclined surface of the first engaging portion and By applying an external force to the second end surface of the long shaft body in a state where the second inclined surface of the second engaging portion is in contact with the periphery of the opening of the drilled hole, the movable plate portion and the base portion are formed inside the drilled hole. By shortening the distance to and from, the inner wall of the drilled hole is pressed by the first blade member and the second blade member according to the shortened distance, and the opening of the drilled hole is opened by the first engaging portion and the second engaging portion. It is characterized by including a step of pressing the surroundings to crush the surroundings of the drilled hole.

As described above, according to the present invention, the first blade member and the second blade member are movably connected to the base side wedge member by the base side connecting portion in the radial direction of the drilled hole, and the plate side wedge member. The first blade member and the second blade member are movably connected to the member by the plate-side connecting portion in the radial direction of the drilled hole. Therefore, a plurality of elements constituting the rock breaking tool can be inserted into the drilling hole at once. Moreover, even after the rock splitting treatment, those elements can be collectively recovered.

Further, since it has the above-mentioned connecting structure, the first blade member and the second blade member are drilled through the connecting structure in response to the external force being applied to the movable plate portion toward the bottom surface. It moves toward the inner wall of the and presses it, but the pressing force is relatively small as described above. However, in the present embodiment, as the plate-side wedge member moves toward the bottom surface together with the movable plate portion in response to the application of the external force, the first blade member moves toward the first base-side inclined surface and the first plate-side. While sliding along the inclined surface, it moves in the first radial direction to press the inner wall of the drilled hole, and the second blade member slides along the second base side inclined surface and the second plate side inclined surface. While moving in the second radial direction, the inner wall of the drilled hole is pressed. In this way, the blade member is moved by a mechanism other than the link mechanism to further press the inner wall of the drilled hole. Moreover, the mechanism for sliding the blade member along the inclined surface to move the blade member in the radial direction in this way can apply a relatively large force and has excellent fracture resistance. As a result, rocks, rocks, concrete structures and other objects to be treated can be split efficiently and with a relatively large force.

It is a figure which shows the rock breaking tool and the breaker used when carrying out 1st Embodiment of the crushing method which concerns on this invention. It is a figure which shows the structure of the rock breaking tool shown in FIG. FIG. 2 (b) is a view taken along the line III-III of the rock breaking tool shown in FIG. 2 (b). It is a figure which shows typically 1st Embodiment of the crushing method which concerns on this invention. It is a side view which shows the 2nd Embodiment of the rock breaking tool which concerns on this invention. It is a figure which looked at the rock breaking tool shown in FIG. 5 from various directions. It is a figure which shows typically the 3rd Embodiment of the crushing method which concerns on this invention. It is a figure which shows typically the rock breaking tool for carrying out 4th Embodiment of the crushing method which concerns on this invention. It is an enlarged view of the rock breaking tool shown in FIG. It is a figure which further enlarged a part of the rock breaking tool used in 4th Embodiment. It is a figure which shows typically the 4th embodiment of the crushing method which concerns on this invention. It is a figure which shows typically 5th Embodiment of the crushing method which concerns on this invention. It is a figure which shows the rock breaking tool and the breaker used when carrying out 1st Embodiment of the crushing method which concerns on this invention. It is an enlarged view of the rock breaking tool shown in FIG.

<First Embodiment>
The first embodiment of the crushing method according to the present invention includes the following steps (1) to (4),
Step (1): Forming holes in the object to be treated such as rock, bedrock and concrete structure.
Step (2): Insert the rock breaking tool according to the present invention into the drilling hole.
Step (3): The movable plate portion of the rock breaking tool is hit with a piston of a circuit breaker and press-fitted toward the bottom surface of the drilled hole to crack the rock around the drilled hole.
Step (4): Collect the rock breaking tool after removing the breaker,
By executing the above, the object to be treated is cracked and the area around the drilled hole is crushed. In particular, in order to improve the crushing efficiency, the rock splitting tool described below is used.

FIG. 1 is a diagram showing a rock breaking tool and a breaker used when carrying out the first embodiment of the crushing method according to the present invention, and the rock breaking tool corresponds to the first embodiment of the rock breaking tool according to the present invention. ing. 2A and 2B are views showing the configuration of the rock breaking tool shown in FIG. 1, FIG. 2A is an exploded view, and FIG. 2B is a side view showing the rock breaking tool after assembly. FIG. 3 is a view taken along the line III-III of the rock breaking tool shown in FIG. 2 (b). The XYZ orthogonal coordinate axes are set in order to show the directions in each figure in a unified manner. Here, the axial direction of the Z axis represents the depth direction in which the hole 21 is formed with respect to the object 2 to be processed, and the bottom surface 211 of the hole 21 is located in the Z2 direction, while the opening of the hole 21 is in the Z1 direction. 212 is located. Further, the axial direction of the Y axis orthogonal to the depth direction Z of the drilling 21 corresponds to the radial direction of the drilling 21, of which Y1 corresponds to the first radial direction and Y2 corresponds to the second radial direction. There is. Further, an axis orthogonal to both the Z axis and the Y axis is defined as the X axis, one of which is in the X1 direction and the other is in the X2 direction.

The rock breaking tool 1A includes a base portion 11 having a substantially oval shape in a plan view from above. The major axis (Y direction size) of the base portion 11 is slightly shorter than the inner diameter of the drilled hole 21, and the minor axis (X direction size) is further shorter than the major axis. It can be inserted into 21. The base portion 11 is inserted into the drilling hole 21, and the flat surface of the base portion 11 on the Z2 direction side is locked by the bottom surface 211 of the drilling hole 21 so that the base portion 11 can be supported by the bottom surface 211. The shape of the base portion 11 is not limited to this, and may be any shape as long as it is inserted into the drilled hole 21 and stably supported by the bottom surface 211, for example, a circular shape. The same applies to the movable plate portion 13 described later.

The base side wedge member 12 is projected from the central portion of the plane of the base portion 11 on the Z1 direction side toward the opening 212 of the drilled hole 21 in an arrow shape. The side surface of the base side wedge member 12 in the Y1 direction and the side surface in the Y2 direction are finished as inclined surfaces. In order to distinguish between the two inclined surfaces, the side surface on the Y1 direction side is referred to as the first base side inclined surface 121, and the side surface on the Y2 direction side is referred to as the second base side inclined surface 122. Further, a shaft 123 extending in the X direction is inserted in the vicinity of the top of the base side wedge member 12, and both ends thereof are fixed to the base side wedge member 12 in a shape protruding in the X1 direction and the X2 direction. These protruding portions function as pins 124 that pivotally support the link bar of the base-side connecting portion described later on the base-side wedge member 12 side.

A movable plate portion 13 is provided at a position away from the base portion 11 in the Z1 direction on the opening side (Z2 direction side) of the drilling 21 so as to be movable along the depth direction Z of the drilling 21. Like the base portion 11, the movable plate portion 13 also has a substantially oval shape in a plan view from above, and can be inserted into the drilling 21 through the opening 212 of the drilling 21. Further, a female screw for the eyebolt 19 is screwed in the central portion of the upper surface (main surface on the Z1 direction side) of the movable plate portion 13. Since the rock splitting tool 1A has a symmetrical shape in the vertical direction Z and can be used upside down, a female screw for the eyebolt 19 is also screwed on the base portion 11.

A plate-side wedge member 14 is projected from the central portion of the plane of the movable plate portion 13 on the Z2 direction side toward the bottom surface 211 of the drilling 21 in an arrow shape. The side surface of the plate-side wedge member 14 in the Y1 direction and the side surface in the Y2 direction are finished as inclined surfaces. In order to distinguish between the two inclined surfaces, the side surface on the Y1 direction side is referred to as the first plate side inclined surface 141, and the side surface on the Y2 direction side is referred to as the second plate side inclined surface 142. The absolute values of the inclination angles of the inclined surfaces 121, 122, 141, and 142 are the same. Further, a shaft 143 extending in the X direction is inserted in the vicinity of the top of the plate side wedge member 14, and both ends thereof are fixed to the plate side wedge member 14 in a shape protruding in the X1 direction and the X2 direction. These protruding portions function as pins 144 that axially support the link bars 181 and 182 of the plate-side connecting portion 18 to be described later on the plate-side wedge member 14 side.

In this way, the movable plate portion 13 and the plate-side wedge member 14 are integrated, and are integrally movable inside the drilling 21 according to the application of an external force. For example, when a striking force is applied to the movable plate portion 13 from the breaker 3, the plate side wedge member 14 moves in the Z2 direction together with the movable plate portion 13, and the distance from the base side wedge member 12 is shortened. Since the first blade member 15 and the second blade member 16 are interposed between the base side wedge member 12, they do not collide with the base side wedge member 12.

In the first blade member 15, as shown in FIG. 2A, an inclined surface 151 that is slidable with respect to the first base side inclined surface 121 and the first plate side inclined surface 141 on the side surface on the Y2 direction side, respectively. , 152 are provided. Then, in the first blade member 15, the inclined surface 151 is set with respect to the first base side inclined surface 121 between the first base side inclined surface 121 and the first plate side inclined surface 141 inside the drilled hole 21. It is slidable, and the inclined surface 152 is slidably arranged with respect to the inclined surface 141 on the first plate side. On the other hand, a band-shaped groove is formed in the central portion in the Z direction on the side surface of the first blade member 15 on the Y1 direction side. Therefore, as will be described later, when the first blade member 15 is moved in the Y1 direction, the upper end portion and the lower end portion of the side surface on the Y1 direction side are in close contact with the inner wall of the drilling 21 and are directed in the Y1 direction. And give a pressing force. That is, the pressing force can be applied to the inner wall of the drilling 21 by being divided into upper and lower stages. Further, a shaft 153 extending in the X direction is inserted through the lower end portion of the first blade member 15, and both ends thereof are fixed to the first blade member 15 in a shape protruding in the X1 direction and the X2 direction. These protruding portions function as pins 154 that pivotally support the link bar 171 of the base-side connecting portion 17, which will be described later, on the first blade member 15 side. Further, a shaft 155 extending in the X direction is inserted through the upper end portion of the first blade member 15, and both ends thereof are fixed to the first blade member 15 in a form protruding in the X1 direction and the X2 direction. These projecting portions function as pins 156 that pivotally support the link bar 181 of the plate-side connecting portion 18 described later on the first blade member 15 side.

The second blade member 16 is provided with inclined surfaces 161 and 162 that are slidable with respect to the second base-side inclined surface 122 and the second plate-side inclined surface 142, respectively, on the side surface on the Y1 direction side. Then, in the second blade member 16, the inclined surface 161 is located between the second base-side inclined surface 122 and the second plate-side inclined surface 142 with respect to the second base-side inclined surface 122 inside the drilling 21. It is slidable, and the inclined surface 162 is slidably arranged with respect to the inclined surface 142 on the second plate side. On the other hand, a band-shaped groove is formed in the central portion in the Z direction on the side surface of the second blade member 16 on the Y1 direction side. Therefore, as will be described later, when the second blade member 16 is moved in the Y2 direction, the upper end portion and the lower end portion of the side surface on the Y2 direction side are in close contact with the inner wall of the drilling 21 and are directed in the Y2 direction. And give a pressing force. That is, the pressing force can be applied to the inner wall of the drilling 21 by being divided into upper and lower stages. Further, a shaft 163 extending in the X direction is inserted through the lower end portion of the second blade member 16, and both ends thereof are fixed to the second blade member 16 so as to project in the X1 direction and the X2 direction. These projecting portions function as pins 164 that pivotally support the link bar 172 of the base-side connecting portion 17 described later on the second blade member 16 side. Further, a shaft 165 extending in the X direction is inserted through the upper end portion of the second blade member 16, and both ends thereof are fixed to the second blade member 16 so as to project in the X1 direction and the X2 direction. These projecting portions function as pins 166 that pivotally support the link bar 182 of the plate-side connecting portion 18 described later on the second blade member 16 side.

On the lower end side of the rock breaking tool 1A, a base side connecting portion 17 is provided. The base side connecting portion 17 has two link bars 171 and 172. Slotted holes are provided at both ends of the link bars 171 and 172. The long hole on the Y1 direction side of the link bar 171 is rotatably attached to the pin 154, and the long hole on the Y2 direction side is rotatably attached to the pin 124. Further, the long hole on the Y1 direction side of the link bar 172 is rotatably attached to the pin 124, and the long hole on the Y2 direction side is rotatably attached to the pin 164. Therefore, the first blade member 15 and the second blade member 16 are movably connected to the base side wedge member 12 on the lower end side of the rock splitting tool 1A in the radial direction Y of the drilling 21.

A plate-side connecting portion 18 is provided on the upper end side of the rock breaking tool 1A. The plate-side connecting portion 18 has two link bars 181 and 182. Slotted holes are provided at both ends of the link bars 181 and 182. The long hole on the Y1 direction side of the link bar 181 is rotatably attached to the pin 156, and the long hole on the Y2 direction side is rotatably attached to the pin 144. Further, the long hole on the Y1 direction side of the link bar 182 is rotatably attached to the pin 144, and the long hole on the Y2 direction side is rotatably attached to the pin 166. Therefore, the first blade member 15 and the second blade member 16 are movably connected to the plate side wedge member 14 on the upper end side of the rock splitting tool 1A in the radial direction Y of the drilling 21.

As described above, in the rock splitting tool 1A, as shown in FIG. 2B, the base side wedge member 12 integrated with the base portion 11, the plate side wedge member 14 integrated with the movable plate portion 13, and the first blade. The member 15 and the second blade member 16 are connected to each other by two connecting portions 17 and 18. Then, the first blade member 15 and the second blade member 16 are brought close to each other and separated from each other according to a change in the distance between the base side wedge member 12 and the plate side wedge member 14 (hereinafter referred to as "inter-wedge distance"). It is configured.

Further, when the wedge-to-wedge distance is shortened, the inclined surfaces 151 and 152 slide along the first base-side inclined surface 121 and the first plate-side inclined surface 141, respectively, so that the first blade member 15 becomes the first. It moves in the radial direction Y1 and presses the inner wall of the drilling 21 in the Y1 direction. At the same time, the inclined surfaces 161 and 162 slide along the inclined surface 122 on the second base side and the inclined surface 142 on the second plate side, respectively, so that the second blade member 16 moves in the second radial direction Y2 and is scraped. The inner wall of the hole 21 is pressed in the Y2 direction. In addition, in order to facilitate the sliding of the first blade member 15 and the second blade member 16 with respect to each of the base side wedge member 12 and the plate side wedge member 14, as shown in FIG. 3, a lubricant is applied to each sliding surface. Grooves TR are provided on each inclined surface for supplying the above.

As shown in FIG. 1, the breaker 3 for applying an external force toward the base portion 11 to the movable plate portion 13 to move in the Z2 direction is provided via a bracket 52 on an arm 51 of a construction vehicle 5 such as a hydraulic power shovel. Is installed. Therefore, the operator can control the position and posture of the breaker 3 by operating the operation lever of the construction vehicle 5 to control the position and angle of the arm 51.

Next, a method of breaking and crushing the object 2 to be processed by using the rock breaking tool 1A and the breaker 3 configured as described above will be described with reference to FIG. FIG. 4 is a diagram schematically showing a first embodiment of the crushing method according to the present invention. The upper part of the figure is a schematic view of the inside of the hole 21 as viewed from the X2 direction, and the lower part is a view of the inside of the hole 21 as seen from above. In the figure, in order to clarify the moving operation of the base portion 11, the base side wedge member 12, the movable plate portion 13, the plate side wedge member 14, the first blade member 15, and the second blade member 16, the connection mechanism is related. The configuration (pins and link bars) is not shown.

In this embodiment, as shown in FIG. 4A, a hole 21 is formed in the object 2 to be processed in the Z2 direction (step (1): hole forming step). In parallel with this, a rock breaking tool 1A to be inserted into the drilling 21 is prepared (preparation step). In this preparatory step, the male screw of the eyebolt 19 is screwed into the female screw provided at the center of the upper surface (main surface on the Z1 direction side) of the movable plate portion 13, and the eyebolt 19 is attached to the rock splitting tool 1A. Further, the hanging wire W is attached to the eyebolt 19.

Then, as shown by the arrow in the figure (a), the rock breaking tool 1A is inserted into the drilling 21 by using the hanging wire W, and the base portion 11 of the rock breaking tool 1A is placed on the bottom surface 211 of the drilling 21. It is placed and supported by the bottom surface 211 (process (2): installation process of breaking rock tool). At this time, the upper end and the lower end of the outer peripheral surfaces of the first blade member 15 and the second blade member 16 come into contact with the inner wall of the drilled hole 21, while the central portion provided with the band-shaped groove portion is from the inner wall of the drilled hole 21. It is separated.

Subsequently, after removing the hanging wire W and the eyebolt 19, the tip portion (not shown) of the breaker 3 is positioned on the movable plate portion 13 of the rock breaking tool 1A as shown in FIG. After that, as shown in FIG. 4B, the breaker 3 is operated to hit the movable plate portion 13 to push down the movable plate portion 13 together with the plate side wedge member 14 in the Z2 direction. As a result, the distance between the wedges is shortened, and the first blade member 15 and the second blade member 16 move in the Y1 direction and the Y2 direction, respectively. As a result, as shown by the white arrows in FIG. 4B, the outer upper end portion and the outer lower end portion of the blade members 15 and 16 are in close contact with the inner wall of the drilling 21 to apply a pressing force. That is, the pressing force is applied to the inner wall of the drilling 21 in two upper and lower stages. As a result, the object 2 to be treated is cracked, cracks CR are formed around the drilling 21 and crushed (step (3): crushing step).

After that, the operation of the breaker 3 is stopped, and the breaker 3 is separated from the movable plate portion 13 in the Z1 direction. Then, since the pressing force applied to the inner wall of the drilling 21 is eliminated and the periphery of the drilling 21 has already been crushed, the rock splitting tool 1A can be integrally recovered from the object to be processed 2 (step). (4): Recovery step).

As described above, in the present embodiment, as shown in FIG. 2B, the rock breaking tool 1A has a base side wedge member 12 integrated with the base portion 11 and a plate side integrated with the movable plate portion 13. The wedge member 14, the first blade member 15, and the second blade member 16 are connected to each other by two connecting portions 17, 18. Therefore, a plurality of elements constituting the rock splitting tool 1A can be collectively inserted into the drilling hole 21. Moreover, even after the rock splitting treatment, those elements can be collectively recovered.

Further, since it has the above-mentioned connecting structure, the first blade member 15 and the second blade member 15 and the second blade member correspond to the external force applied to the movable plate portion 13 toward the bottom surface 211. 16 moves toward the inner wall of the drilling 21 and presses it. The pressing force is relatively small, but in addition to this, a larger pressing force acts on the inner wall of the drilling 21. That is, as the plate-side wedge member 14 moves toward the bottom surface 211 together with the movable plate portion 13 in response to the application of the external force, the first blade member 15 moves toward the first base-side inclined surface 121 and the first plate-side. While sliding along the inclined surface 141, it moves in the first radial direction Y1 to press the inner wall of the drilled hole 21, and the second blade member 16 has the second base side inclined surface 122 and the second plate side inclined surface 142. While sliding along, it moves in the second radial direction Y2 and presses the inner wall of the drilled hole 21. In the mechanism for moving the blade members 15 and 16 in the radial direction Y by sliding the blade members 15 and 16 along the inclined surface in this way, a relatively large force can be applied and the blade members 15 and 16 have excellent fracture resistance. ing. As a result, the object 2 to be treated such as rock, bedrock and concrete structure can be split efficiently and with a relatively large force.

<Second Embodiment>
FIG. 5 is a side view showing a second embodiment of the rock breaking tool according to the present invention. FIG. 6 is a view of the rock breaking tool shown in FIG. 5 from various directions, and FIGS. It is a figure, CC line arrow view and DD line arrow view. The alternate long and short dash line in FIGS. 6 (a) and 6 (b) indicates the drilled hole 21. The points that the rock breaking tool 1B according to the second embodiment is significantly different from the rock breaking tool 1A according to the first embodiment are as follows.

As shown in FIGS. 6A and 6B, guide grooves 157 and 167 are provided on the inclined surface side of the blade members 15 and 16, and the base side wedge member 12 and the plate side wedge member 14 are provided in the Z direction. It is possible to guide.

Further, no groove is provided on the anti-inclined surface side (outer surface side) of the blade members 15 and 16, and as shown in FIGS. 6A and 6B, the blade members 15 and 16 are close to each other. In the state, the rock breaking tool 1B has an outer diameter D1 on the opening side (Z1 direction side) of the drilling 21 and an outer diameter D2 (<D1) on the bottom surface side (Z2 direction side) of the drilling 21. .. That is, as shown in FIG. 5, although it is a little, it has a shape that tapers toward the Z2 direction. Such a configuration can also be applied to the rock breaking tool 1A according to the first embodiment. On the contrary, similarly to the rock breaking tool 1A, in the second embodiment, the outer diameter D1 = the outer diameter D2, and a groove portion may be provided in the central portion of the outer surface.

Further, in the rock splitting tool 1B, as shown in FIGS. 5 and 6, the base side connecting portion 17 is configured by one link bar 173 instead of the two link bars 171 and 172 in the X2 direction. .. The link bar 173 is composed of a plate member extending in the Y direction, and an engaging pin 174 projects from the central portion toward the wedge member 12 on the base side. Further, from the engaging pin 174, a long hole 175 is provided in the first radial direction Y1 and a long hole 176 is provided in the second radial direction Y2. The link bar 173 having such a configuration is a long hole in a state where the tip end portion of the engaging pin 174 is engaged with the groove portion 125 extending in the Z direction on the side surface of the base side wedge member 12 on the X2 direction side. It is connected to the blade members 15 and 16 by connecting members 177 and 178 such as bolts via 175 and 176, respectively. The base-side connecting portion 17 configured in this way is also provided in the X1 direction, and the two base-side connecting portions 17 allow the blade members 15 and 16 to be radial to the base-side wedge member 12. It is movably connected to Y.

Such a connecting structure is also provided on the plate side. That is, in the X2 direction, the plate side connecting portion 18 is configured by one link bar 183 instead of the two link bars 181 and 182. The link bar 183 is composed of a plate member extending in the Y direction, and an engaging pin 184 is projected toward the plate side wedge member 14 with respect to the central portion thereof. Further, from the engaging pin 184, an elongated hole 185 is provided in the first radial direction Y1 and an elongated hole 186 is provided in the second radial direction Y2. The link bar 183 having such a configuration is a long hole in a state where the tip end portion of the engagement pin 184 is engaged with the groove portion 145 extending in the Z direction on the side surface of the plate side wedge member 14 on the X2 direction side. It is connected to the blade members 15 and 16 by connecting members 187 and 188 such as bolts via 185 and 186, respectively. The plate-side connecting portion 18 configured in this way is also provided in the X1 direction, and the two plate-side connecting portions 18 allow the blade members 15 and 16 to be radial to the plate-side wedge member 14. It is movably connected to Y.

The other configurations are basically the same as those of the rock breaking tool 1A according to the first embodiment. Therefore, the same reference numerals are given to the same configurations, and the description thereof will be omitted.

When the object 2 to be processed is cracked and crushed by using the rock breaking tool 1B and the breaker 3 configured in this way, a hole 21 is formed in the object 2 to be processed in the Z2 direction as in the first embodiment (similar to the first embodiment). In parallel with the step (1): drilling step), the rock breaking tool 1B to be inserted into the drilling 21 is prepared (preparation step). In this preparatory step, the male screw of the eyebolt 19 (see FIG. 2) is screwed into the female screw provided at the center of the upper surface (main surface on the Z1 direction side) of the movable plate portion 13, and the eyebolt 19 is screwed into the rock splitting tool 1B. To install. Further, a hanging wire W (see FIG. 2) is attached to the eyebolt 19.

Then, the rock splitting tool 1B is inserted into the drilling hole 21 using the hanging wire W, the base portion 11 of the rock splitting tool 1B is placed on the bottom surface 211 (see FIG. 4) of the drilling hole 21, and is supported by the bottom surface 211. (Process (2): Installation process of breaking rock tool). At this time, since the dimensional relationship of the outer diameter is (D1> D2), the rock splitting tool 1B can be stably inserted into the drilling hole 21. Following this, after removing the hanging wire W and the eyebolt 19, the tip of the breaker 3 (see FIG. 1) is positioned on the movable plate portion 13 of the rock breaking tool 1B. After that, the breaker 3 is operated to hit the movable plate portion 13 to push down the movable plate portion 13 together with the plate side wedge member 14 in the Z2 direction. As a result, the distance between the wedges is shortened, and the first blade member 15 and the second blade member 16 move in the Y1 direction and the Y2 direction, respectively. As a result, the outer surfaces of the blade members 15 and 16 come into close contact with the inner wall of the drilling 21 to apply a pressing force. As a result, the object 2 to be treated is cracked, a crack CR (see FIG. 4) is formed around the drilled hole 21, and the object is crushed (step (3): crushing step). After that, the operation of the breaker 3 is stopped, and the breaker 3 is separated from the movable plate portion 13 in the Z1 direction. Then, since the pressing force applied to the inner wall of the drilling 21 is eliminated and the periphery of the drilling 21 has already been crushed, the rock splitting tool 1B can be integrally recovered from the object 2 to be processed (step). (4): Recovery step).

As described above, also in the rock breaking tool 1B according to the second embodiment, the base side wedge member 12 integrated with the base portion 11, the plate side wedge member 14 integrated with the movable plate portion 13, and the first blade member The 15 and the second blade member 16 are connected to each other by two connecting portions 17 and 18. Therefore, a plurality of elements constituting the rock splitting tool 1B can be collectively inserted into the drilling hole 21. Moreover, even after the rock splitting treatment, those elements can be collectively recovered.

Further, since it has the above-mentioned connecting structure, a large pressing force acts on the inner wall of the drilling 21 in response to the external force being applied to the movable plate portion 13 toward the bottom surface 211. That is, as the plate-side wedge member 14 moves toward the bottom surface 211 together with the movable plate portion 13 in response to the application of the external force, the first blade member 15 moves toward the first base-side inclined surface 121 and the first plate-side. While sliding along the inclined surface 141, it moves in the first radial direction Y1 to press the inner wall of the drilled hole 21, and the second blade member 16 has the second base side inclined surface 122 and the second plate side inclined surface 142. While sliding along, it moves in the second radial direction Y2 and presses the inner wall of the drilled hole 21. In the mechanism for moving the blade members 15 and 16 in the radial direction Y by sliding the blade members 15 and 16 along the inclined surface in this way, a relatively large force can be applied and the blade members 15 and 16 have excellent fracture resistance. ing. As a result, the object 2 to be treated such as rock, bedrock and concrete structure can be split efficiently and with a relatively large force.

<Third Embodiment>
In the first embodiment and the second embodiment, one rock breaking tool 1A and 1B are inserted into one drilling 21 to crush the periphery of the drilling 21. However, one drilling 21 is crushed. Multiple rock breaking tools may be inserted. For example, as shown in FIG. 7, two rock breaking tools 1a and 1b having the same configuration as the rock breaking tool 1A shown in FIG. 2 may be inserted into the drilling 21 in this order (third embodiment).

FIG. 7 is a diagram schematically showing a third embodiment of the crushing method according to the present invention. In the third embodiment, as shown in the figure, the base portion 11 of the rock breaking tool 1a is placed on the bottom surface 211 of the drilling 21, and the base portion of the rock breaking tool 1b is further placed on the movable plate portion 13 of the rock breaking tool 1a. 11 is placed. As a result, the rock breaking tool 1a is directly supported by the bottom surface 211 of the drilling hole 21, and receives an external force from the breaker 3 via the rock breaking tool 1b. On the other hand, the rock breaking tool 1b is indirectly supported by the bottom surface 211 of the drilling 21 via the rock breaking tool 1a, and the external force from the breaker 3 is directly received by the movable plate portion 13. Further, by arranging the rock breaking tools 1a and 1b so as to intersect each other (for example, orthogonally) in a plan view from the Z1 direction, the rock breaking direction by the rock breaking tool 1a and the rock breaking direction by the rock breaking tool 1b can be made different, and crushing can be performed. Efficiency can be further increased.

In this third embodiment, the rock breaking tools 1a and 1b correspond to examples of the "10th rock breaking tool" and the "20th breaking rock tool" of the present invention, respectively. Further, with respect to the rock breaking tool 1a, the Y1 direction and the Y2 direction correspond to an example of the "first radial direction" and the "second radial direction" of the present invention, respectively. On the other hand, with respect to the rock breaking tool 1b, the X direction, the X1 direction and the X2 direction correspond to examples of the "diameter direction", "first radial direction" and "second radial direction" of the present invention, respectively.

Further, in the third embodiment, the rock breaking tools 1a and 1b are arranged so as to intersect each other (for example, orthogonally) in a plan view from the Z1 direction, but the rock breaking tool 1b is completely equal to the rock breaking tool 1a in the same plan view. They may be arranged so that they overlap, that is, the directions of the split rocks match.

Further, in the third embodiment, two rock breaking tools 1a and 1b having the same configuration as the rock breaking tool 1A shown in FIG. 2 are used, but two having the same configuration as the rock breaking tool 1B shown in FIGS. 5 and 6 are used. A rock breaking tool may be used.

<Fourth Embodiment>
In the first to third embodiments, the external force from the breaker 3 of the rock breaking tools 1A, 1B, 1a, and 1b is directly applied to the movable plate portion 13, but another member, for example, as shown in FIG. The external force may be applied to the movable plate portion 13 via the long shaft body 6 extending in the Z direction (fourth embodiment).

FIG. 8 is a diagram schematically showing a rock breaking tool for carrying out the fourth embodiment of the crushing method according to the present invention. The fourth embodiment is significantly different from the first embodiment in that an external force from the breaker 3 is applied to the movable plate portion 13 via the long shaft body 6 and a pair provided on the side surface of the long shaft body 6. The engaging portions 61 and 62 press the periphery of the opening 212 of the drilled hole 21, and the other configurations are basically the same as those of the first embodiment. Therefore, in the following description, the differences will be mainly described, and the same configuration will be referred to with the same or equivalent reference numerals and the configuration description will be omitted.

9 is an enlarged view of the rock breaking tool shown in FIG. 8, and FIG. 9A is a side view. Further, FIG. (B) is a cross-sectional view taken along the line BB in the figure (a), and FIG. 3 (c) is a cross-sectional view taken along the line CC in the figure (a). The alternate long and short dash line in the drawing of is indicated by drilling. FIG. 10 is a further enlarged view of a part of the rock breaking tool used in the fourth embodiment. The rock breaking tool 1C shown in FIG. 9 differs from the rock breaking tool 1A shown in FIG. 2 in that the long shaft body 6 is additionally equipped and the upper surface 131 of the movable plate portion 13 (the "opposing surface" of the present invention). The point (corresponding to one example) is that it is finished in a convex shape, and the other configurations are basically the same. Therefore, in the following description, the same configuration will be referred to with the same reference numerals, the description will be omitted, and the differences will be mainly described.

As shown in FIG. 6A, the long shaft body 6 is arranged so that the end face on the Z1 direction side faces the breaker 3 and the end face on the Z2 direction side faces the upper surface 131 of the movable plate portion 13. That is, it is arranged between the breaker 3 and the movable plate portion 13 so that the axis of the long shaft body 6 is substantially parallel to the formation direction Z of the drilling 21. Here, when the upper surface 131 of the movable plate portion 13 is finished flat as in the first to third embodiments, it is desirable that both end faces of the long shaft body 6 are also finished flat. On the other hand, for example, as described in Japanese Patent Application Laid-Open No. 2016-21221, even if the axis of the piston 31 provided on the breaker 3 and the axis of the wedge members 12 and 14 are slightly inconsistent, the striking force of the breaker 3 is applied. In order to reliably transmit to the wedge members 12 and 14, as shown in FIG. 9, the piston 31, the long shaft body 6 and the movable plate portion 13 may be finished in a curved shape, and in the fourth embodiment, the configuration is formed. It is adopted. More specifically, the lower surface 311 of the piston 31 is finished with a curved concave surface recessed in the Z1 direction. Correspondingly, the end face 64 on the Z1 direction side of the long shaft body 6 (corresponding to an example of the "second end face" of the present invention) 64 is finished as a curved convex surface protruding in the Z1 direction. Moreover, the lower surface 311 of the piston 31 and the end face 63 on the Z1 direction side of the long shaft body 6 have the following relationship (radius of curvature of the end face 311) = (radius of curvature of the end face 63).
have.

Further, the end surface 63 (corresponding to an example of the "first end surface" of the present invention) on the Z2 direction side of the long shaft body 6 is finished as a curved concave surface recessed in the Z1 direction. Correspondingly, the upper surface 131 of the movable plate portion 13 is finished in a curved convex surface protruding in the Z1 direction. Moreover, the end surface 64 on the Z2 direction side of the long shaft body 6 and the upper surface 131 of the movable plate portion 13 have the following relationship (radius of curvature of the end surface 64) = (radius of curvature of the upper surface 131).
have. Of course, it goes without saying that both or one of the above-mentioned unevenness relationships may be reversed, and in either case, it is assumed that the axis of the piston 31 provided on the breaker 3 and the axis of the wedge members 12 and 14 are slightly inconsistent. The striking force of the breaker 3 can be reliably transmitted to the wedge members 12 and 14.

Further, in the fourth embodiment, as shown in FIG. 9, the long shaft body 6 has two engaging portions 61 and 62. The first engaging portion 61 is provided so as to project in the first radial direction Y1 from a region near the second end surface 64 of the side surface 65 of the long shaft body 6. In the first engaging portion 61, a first inclined surface 612 capable of engaging with the periphery of the opening 212 of the drilling 21 is provided at the tip portion 611 protruding in the first radial direction Y1. On the other hand, the second engaging portion 62 is provided so as to project in the second radial direction Y2 from the vicinity region of the second end surface 64 of the long shaft body 6. In the second engaging portion 62, a second inclined surface 622 capable of engaging with the periphery of the opening 212 of the drilled hole 21 is provided at the tip portion 621 protruding in the second radial direction Y2. The first inclined surface 612 and the second inclined surface 622 are inclined so that the amount of protrusion from the neighboring region increases in the Z1 direction (direction from the first end surface 63 to the second end surface 64). It can be engaged with the opening 212 of the drilling 21.

As shown in FIG. 9, when the long shaft body 6 is inserted into the drilling hole 21 into which the components other than the long shaft body 6 of the rock splitting tool 1C are collectively inserted, the first end surface 63 becomes the upper surface of the movable plate portion 13. It slides in contact with 131. Further, the first inclined surface 612 of the engaging portion 61 and the second inclined surface 622 of the engaging portion 62 are locked to the object 2 to be processed around the opening 212 of the drilled hole 21. When the striking force of the breaker 3 is applied to the long shaft body 6 in such a state, the long shaft body 6 moves toward the bottom surface 211 together with the movable plate portion 13 and the plate side wedge member 14. Along with this, the pressing by the blade members 15 and 16 in the radial direction is executed in the same manner as in the first embodiment, and at the same time, the pressing by the engaging portions 61 and 62 is executed. That is, the engagement position P of the first inclined surface 612 and the second inclined surface 622 that engages with the periphery of the opening 212 of the drilled hole 21 moves to the second end surface 64 side, that is, to the Z1 direction side, so that the first The engaging portion 61 presses the periphery of the opening 212 of the drilling 21 in the first radial direction Y1, and the second engaging portion 62 presses the periphery of the opening 212 of the drilling 21 in the second radial direction Y2.

Next, a method of breaking and crushing the object 2 to be processed by using the rock breaking tool 1C and the breaker 3 configured as described above will be described with reference to FIG. FIG. 11 is a diagram schematically showing a fourth embodiment of the crushing method according to the present invention. In each column of the figure, the left side drawing is a schematic view of the inside of the hole 21 viewed from the X2 direction, the upper right drawing is a view of the vicinity of the opening 212 of the hole 21 from above, and the lower right drawing is a view. It is the figure which looked at the inside of the drilling 21 from above. In the figure, the long shaft body 6, the engaging portions 61, 62, the base portion 11, the base side wedge member 12, the movable plate portion 13, the plate side wedge member 14, the first blade member 15, and the second blade member 16 In order to clarify the movement operation of, the configuration (pin and link bar) related to the connecting mechanism is not shown.

In this fourth embodiment, as shown in FIG. 11A, a hole 21 is formed in the object 2 to be processed in the Z2 direction (step (1): hole forming step). In parallel with this, the rock breaking tool 1C to be inserted into the drilling 21 is prepared (preparation step). In this preparatory step, the bolt 71 provided at the tip of the hanging member 7 (see FIG. 10B) is screwed into the female screw provided at the center of the upper surface 131 of the movable plate portion 13, and the rock splitting tool 1C (However, the long shaft body 6 is excluded) is attached to the hanging member 7 so as to be suspended.

Then, as shown in FIG. 6A, the component parts (substantially the same integrated structure as the rock splitting tool 1A) other than the long shaft body 6 of the rock splitting tool 1C are inserted into the hole 21 by the hanging member 7. Inserted, the base portion 11 of the rock splitting tool 1C is placed on the bottom surface 211 of the drilling 21 and supported by the bottom surface 211. Following this, after the hanging member 7 is removed from the movable plate portion 13, the tip and center portions of the long shaft body 6 are inserted into the drilling holes 21, and the first end surface 63 is the upper surface 131 of the movable plate portion 13. The first inclined surface 612 of the engaging portion 61 and the second inclined surface 622 of the engaging portion 62 are locked around the opening 212 of the drilling 21 (step (2): installation of a rock breaking tool). Process).

When the preparation for the crushing process is completed in this way, the piston 31 of the breaker 3 is brought into sliding contact with the second end surface 64 of the long shaft body 6 of the rock breaking tool 1C as shown in FIG. After that, the breaker 3 is operated to hit the long shaft body 6 as shown in FIG. 11 (b). As a result, the long shaft body 6 is pushed down in the Z2 direction, and the movable plate portion 13 is pushed down together with the plate side wedge member 14 in the Z2 direction. Of these, the engagement position P that engages with the periphery of the opening 212 of the drilled hole 21 of the first inclined surface 612 and the second inclined surface 622 by pushing down the long shaft body 6 is on the second end surface 64 side, that is, on the Z1 direction side. Move to. As a result, as shown by the white arrow AR1 in FIG. 11B, the first engaging portion 61 presses the periphery of the opening 212 of the drilled hole 21 in the first radial direction Y1 and the second engaging portion. 62 presses the periphery of the opening 212 of the drilling 21 in the second radial direction Y2. At the same time, by pushing down the movable plate portion 13 and the plate side wedge member 14 in the Z2 direction, the distance between the wedges is shortened, and the first blade member 15 and the second blade member 16 move in the Y1 direction and the Y2 direction, respectively. As a result, as shown by the white arrow AR2 in FIG. 11B, the outer surfaces of the blade members 15 and 16 are in close contact with the inner wall of the drilling 21 to apply a pressing force. As a result, the object 2 to be treated is cracked, cracks CR are formed around the drilling 21 and crushed (step (3): crushing step).

After that, the operation of the breaker 3 is stopped, and the breaker 3 is separated from the movable plate portion 13 in the Z1 direction. Then, the pressing force applied to the inner wall of the drilling 21 disappears, and the periphery of the drilling 21 has already been crushed. Therefore, the long shaft body 6 is recovered, and the rock breaking tool 1C excluding the long shaft body 6 is used. It can be integrally recovered from the object to be processed 2 (step (4): recovery step).

As described above, in the present embodiment, the rock splitting tool 1C has a long shaft body 6 and an integrated structure other than the long shaft body 6, but the integrated structure other than the long shaft body 6 is used. It is substantially the same as the rock breaking tool 1A, and a plurality of elements constituting the integrated structure can be collectively inserted into the drilling hole 21. Moreover, even after the rock splitting treatment, those elements can be collectively recovered. Further, since the long shaft body 6 is used in a state where the end portion on the Z2 direction side is always exposed from the drilling hole 21 as shown in FIG. 11, it can be inserted into the drilling hole 21 and recovered from the drilling hole 21. It's easy. Therefore, the same effects as those of the first to third embodiments can be obtained.

Further, in the fourth embodiment, the vicinity of the bottom surface of the drilling 21 and the vicinity of the opening 212 can be crushed at the same time, and the efficiency of the crushing process can be improved.

<Fifth Embodiment>
In the fourth embodiment, the above steps (2) to (4) are continuously executed for one hole 21. However, a plurality of holes 21 are formed in a row in advance, and these steps are performed. The crushing treatment may be continuously performed by performing all or part of the above in parallel (fifth embodiment).

FIG. 12 is a diagram schematically showing a fifth embodiment of the crushing method according to the present invention. In this fifth embodiment, as shown in FIG. 5A, a plurality of drilling holes 21 may be formed, and three sets of rock breaking tools 1C may be prepared and the following steps may be performed.

-Insert the rock splitting tool 1C into each of the holes 21a to 21c (Fig. (B)).
The second end surface 64 of the long shaft body 6 is struck by the piston 31 (see FIG. 8) of the breaker 3 to push down the long shaft body 6 and the movable plate portion 13 to crush the periphery of the drilled hole 21a (the same figure (FIG. 8). c)),
-Recover the rock-breaking tool 1C from the drilling 21a, and insert the recovered rock-breaking tool 1C into another drilling hole (not shown) following the drilling 21c.
By performing the above steps in parallel, the efficiency of the crushing process can be further improved.

The present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the spirit of the present invention. For example, in the fourth and fifth embodiments, the crushing process is performed by combining the rock breaking tool 1A with the long shaft body 6 and using the rock breaking tool 1C. As shown in FIGS. 13 and 14, the rock breaking tool is executed. The crushing process may be performed using a rock breaking tool 1D in which the long shaft body 6 is combined with 1B (sixth embodiment). Further, a plurality of split rock tools 1A and 1B may be combined with one long shaft body 6 as shown in the third embodiment.

Further, in the above embodiment, the breaker 3 is used as a means for applying an external force toward the base portion 11 to the movable plate portion 13 and the long shaft body 6, but the above external force is applied to the movable plate portion 13 by other means. It may be configured to give and perform a rock splitting process.

Further, in the first embodiment, the band-shaped groove portion is provided in the entire central portion of the outer surface of the blade members 15 and 16, but a plurality of groove portions may be further provided. Further, it is not an essential requirement to provide the groove portion, and the blade members 15 and 16 having no groove portion may be used, and as in the second embodiment, the shape may be tapered toward the Z2 direction. good. Further, conversely, only the central portion of the outer surface of the blade members 15 and 16 may be inflated outward so that the inner wall of the drilled hole 21 is pressed only by the central portion.

The present invention can be applied to all rock breaking tools for breaking rocks, rocks, concrete structures and other objects to be treated, and all crushing techniques for crushing objects to be treated using the tools.

1A ~ 1D ... Breaking rock tool 1a ... (1st) Breaking rock tool 1b ... (2nd) Breaking rock tool 2 ... Processing target 6 ... Long shaft body 11 ... Base part 12 ... Base side wedge member 13 ... Movable plate part 14 ... Plate Side wedge member 15 ... 1st blade member 16 ... 2nd blade member 17 ... Base side connecting part 18 ... Plate side connecting part 21 ... Drilling 61 ... 1st engaging part 62 ... 2nd engaging part 63 ... (2nd ) End surface 64 ... (1st) end surface 65 ... Side surface 121 ... 1st base side inclined surface 122 ... 2nd base side inclined surface 131 ... Upper surface (opposing surface of movable plate portion)
141 ... Inclined surface on the first plate side 142 ... Inclined surface on the second plate side 151, 152 ... Inclined surface (of the first blade member) 161, 162 ... Inclined surface (of the second blade member) 211 ... (of the hole 21) Bottom surface 212 ... Opening (of drilling 21) 611, 621 ... Tip portion 612 ... First inclined surface 622 ... Second inclined surface P ... Engagement position X1, Y1 ... First radial direction X2, Y2 ... Second radial direction Y ... radial direction Z ... depth direction

Claims (9)

The base part supported by the bottom surface of the drilled hole formed in the object to be treated, and
A base-side wedge member projecting from the base portion toward the opening of the hole in an arrow shape,
A movable plate portion that is movably provided on the opening side of the drilling along the depth direction of the drilling, and a movable plate portion.
A plate-side wedge member projecting from the movable plate portion toward the bottom surface of the drilling hole in an arrow shape,
Inside the drilled hole, a first base-side inclined surface provided on the first radial side surface of the base-side wedge member in the radial direction of the drilled hole, and the first radial side surface of the plate-side wedge member. A first blade member that is slidably arranged with respect to the first base-side inclined surface and the first plate-side inclined surface, and the first blade member.
Inside the hole, a second base-side inclined surface provided on the second radial side surface of the base-side wedge member in the radial direction of the hole, and a second radial side surface of the plate-side wedge member. A second blade member slidably arranged with respect to the second base-side inclined surface and the second plate-side inclined surface provided in
A base-side connecting portion for connecting the first blade member and the second blade member to the base-side wedge member so as to be movable in the radial direction of the hole.
A plate-side connecting portion for connecting the first blade member and the second blade member to the plate-side wedge member so as to be movable in the radial direction of the drilling is provided.
When an external force is applied to the movable plate portion toward the bottom surface, the plate-side wedge member moves toward the bottom surface together with the movable plate portion, and the first blade member moves toward the bottom surface. While sliding along the 1 base side inclined surface and the 1st plate side inclined surface, it moves in the 1st radial direction to press the inner wall of the drilled hole, and the 2nd blade member is on the 2nd base side. A rock breaking tool characterized in that it moves in the second radial direction while sliding along the inclined surface and the inclined surface on the second plate side to press the inner wall of the drilled hole. The rock breaking tool according to claim 1.
A long shaft body extending along the drilled hole on the opening side of the drilled hole is further provided with respect to the movable plate portion.
The first end face of both end faces of the long shaft body facing the movable plate portion comes into contact with the movable plate portion, while the second end face on the opposite side of the first end face receives the external force to obtain the length. A rock breaking tool in which the shaft body transmits the external force to the movable plate portion. The rock breaking tool according to claim 2.
Of the facing surface of the movable plate portion facing the first end surface of the long shaft body and the first end surface of the long shaft body, one is finished as a concave surface and the other is finished as a convex surface so that they can be slidably contacted with each other. A split rock tool that has become. The rock breaking tool according to claim 2 or 3.
It is provided so as to project in the first radial direction from a region near the second end surface of the side surface of the long shaft body, and the tip portion protruding in the first radial direction can be engaged with the periphery of the opening of the drilled hole. The first engaging portion provided with the first inclined surface and
It is provided so as to project in the second radial direction from a region near the second end surface of the side surface of the long shaft body, and the tip portion projecting in the second radial direction can be engaged with the periphery of the opening of the drilled hole. A second engaging portion provided with a second inclined surface, and
The first inclined surface and the second inclined surface are inclined so that the amount of protrusion from the vicinity region increases as the amount of protrusion from the vicinity region progresses from the first end surface toward the second end surface.
As the long shaft body moves toward the bottom surface together with the movable plate portion and the plate side wedge member due to the application of the external force, the drilled holes of the first inclined surface and the second inclined surface are formed. By moving the position of engagement with the periphery of the opening toward the second end surface side, the first engaging portion presses the periphery of the opening of the drilled hole in the first radial direction, and the second engagement is performed. A rock breaking tool in which a portion presses the circumference of the drilling opening in the second radial direction. A step of inserting the rock breaking tool according to claim 1 into the drilling hole in a state where the first blade member and the second blade member are close to each other and placing the base portion on the bottom surface.
By applying an external force toward the bottom surface of the movable plate portion of the rock breaking tool inserted into the drilling hole, the distance between the movable plate portion and the base portion inside the drilling hole is shortened, and the distance between the movable plate portion and the base portion is shortened. A crushing method comprising a step of pressing the inner wall of the drilling hole against the first blade member and the second blade member in accordance with the shortening of the distance to crush the periphery of the drilling hole. A base of the 10-split rock tool by inserting a 10-split rock tool having the same configuration as the rock-breaking tool according to claim 1 into the drilling hole in a state where the first blade member and the second blade member are close to each other. The process of placing the part on the bottom surface and
Following the insertion of the 10th blade into the drilling hole, the 1st blade member and the 2nd blade member brought the 20th blade member having the same configuration as the rock splitting tool according to claim 1 close to each other. A step of inserting the base portion of the 20th split rock tool into the drilling hole in the state and placing the base portion of the 20th split rock tool on the movable plate portion of the 10th split rock tool.
By applying an external force toward the bottom surface of the movable plate portion of the 20-split rock tool inserted into the drilling hole, in each of the 10-split rock tool and the 20-split rock tool inside the drilling hole. The distance between the movable plate portion and the base portion is shortened, and the first blade member and the second blade member are pressed against the inner wall of the drilled hole in accordance with the shortened distance to move around the drilled hole. A crushing method comprising a step of crushing. The crushing method according to claim 6.
The first blade member and the second blade member in the 20-split rock tool move in a different direction from the movement direction of the first blade member and the second blade member in the 10-split rock tool. A crushing method in which a 20% rock tool is placed on the movable plate portion of the 10th rock tool. A crushing method for crushing the periphery of the hole using the rock breaking tool according to claim 2 or 3.
With the first blade member and the second blade member in close proximity to each other, the base portion, the base side wedge member, the movable plate portion, the plate side wedge member, the first blade member, and the second blade. A step of integrally inserting the member, the base side connecting portion and the plate side connecting portion into the drilling hole, and placing the base portion on the bottom surface.
A step of inserting the long shaft body toward the movable plate portion inserted into the drilling hole and bringing the first end surface of the long shaft body into contact with the movable plate portion.
By applying the external force to the second end surface of the long shaft body in a state where the first end surface of the long shaft body is in contact with the movable plate portion, the movable plate portion and the base are inside the drilled hole. A step of shortening the distance to the portion and pressing the inner wall of the drilling hole against the first blade member and the second blade member to crush the periphery of the drilling hole according to the shortening of the distance. A crushing method characterized by. A crushing method for crushing the periphery of the hole using the rock breaking tool according to claim 4.
With the first blade member and the second blade member in close proximity to each other, the base portion, the base side wedge member, the movable plate portion, the plate side wedge member, the first blade member, and the second blade. A step of integrally inserting the member, the base side connecting portion and the plate side connecting portion into the drilling hole, and placing the base portion on the bottom surface.
The long shaft body is inserted toward the movable plate portion inserted into the drilled hole so that the first end surface of the long shaft body is brought into contact with the movable plate portion, and the first engaging portion of the first engaging portion is brought into contact with the movable plate portion. A step of bringing the inclined surface and the second inclined surface of the second engaging portion into contact with the periphery of the opening of the drilled hole, and
The first end surface of the long shaft body is brought into contact with the movable plate portion, and the first inclined surface of the first engaging portion and the second inclined surface of the second engaging portion are placed around the opening of the drilled hole. By applying the external force to the second end surface of the long shaft body in the abutted state, the distance between the movable plate portion and the base portion is shortened inside the drilled hole, thereby shortening the distance. Correspondingly, the first blade member and the second blade member press the inner wall of the drilled hole, and the first engaging portion and the second engaging portion press the periphery of the opening of the drilled hole. A crushing method comprising a step of crushing the periphery of a hole.

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