JP2019203368A - Rock crushing tool and crushing method therewith - Google Patents

Abstract

To provide a rock crushing tool and a rock crushing method therewith capable of effectively suppressing seizure of a wedge member and a blade member when crushing objects to be crushed such as rocks, rock ground, concrete constructions, and like by using a rock crushing tool provided with the wedge member and the blade member.SOLUTION: A rock crushing tool comprises: a wedge member with a tapered shape toward a tip, of which a tip part is detachable to a drilling hole created in the object to be crushed; and a blade member with an inclined face at a blade side slidable on an inclined face at a wedge side formed on a tip part of the wedge member, which presses an inner wall of the drilling hole through moving to an outside of a radial direction as sliding the inclined surface at the blade side in relative to the inclined surface at the wedge side together with movement of the wedge member along the drilling hole. In the blade member, a concave part configured to store lubricant is extendingly arranged on the inclined surface at the blade side in an insertion direction of the wedge member, while, in the wedge member, a convex part engageable on a rear end part of the concave part is protrudingly arranged from the inclined surface at the wedge side, wherein the lubricant stored within the concave part is injected between the inclined surface at the wedge side and the inclined surface at the blade side as the convex part press it toward an inner wall surface at a tip side of the concave part together with movement of the wedge member along the drilling hole.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a split rock tool for splitting a processing object such as a rock, a rock, and a concrete structure, and a crushing technique for crushing the processing object using the tool.

  Conventionally, a wedge member (sometimes called a wedge) and a blade member (a liner, a movable member, a movable piece, etc.) are used as a split rock tool for splitting a processing object such as a rock, bedrock, or concrete structure. The so-called seri-arrow using this may be known. For example, in Patent Document 1, a drilling hole is previously formed in a rock drill with a rock drill, a split rock tool in which a wedge member and a blade member are combined is inserted into the drill hole, and the rear end portion of the wedge member is struck with a breaker. Then the rock mass is crushed. In addition to this, a number of split rock tools using the serrated arrow technique and crushing techniques using the same have been proposed (Patent Documents 2 to 9 etc.).

Japanese Patent Laying-Open No. 2006-225925 (FIG. 3) JP2013-96166A Japanese Patent No. 3117969 Japanese Patent No. 4951574 Japanese Patent No. 5033401 Patent No. 5003131 Japanese Patent No. 5333815 Patent No. 5824713 Japanese Patent No. 5838435 Patent No. 5857375

  In the above-mentioned split rock tool, when the wedge member is pressed by the breaker or the like and moves along the hole, the inclined surface provided on the wedge member moves in the hole while sliding on the inclined surface provided on the blade member. In response to this, the blade member moves outward in the radial direction of the drilling hole, and the split rock treatment is executed. At this time, frictional heat is generated between the inclined surface of the wedge member and the inclined surface of the blade member, and sticking between the wedge member and the blade member, so-called “burn-in”, may occur. In order to prevent seizure, for example, in Patent Document 9 and Patent Document 10, a groove portion is provided on the inclined surface of the wedge member and the inclined surface of the blade member, and the lubricating oil is supplied to the wedge member and the blade member via the groove portion. It has been proposed to supply the sliding surface.

  However, in the above prior art, it cannot be said that the lubricating oil present in the groove portion is necessarily supplied efficiently between the wedge member and the blade member, and at present, the seizure between the wedge member and the blade member is more reliably performed. It is desired to provide technology that can be suppressed.

  The present invention has been made in view of the above problems, and when using a split rock tool having a wedge member and a blade member to split an object to be processed such as rock, bedrock or concrete structure, the wedge member and the blade member An object of the present invention is to provide a technique capable of effectively suppressing the image sticking.

  A first aspect of the present invention is a split rock tool, which has a tapered shape, a wedge member that can be inserted into and removed from a drilled hole formed in a processing object, and a distal end portion of the wedge member. The blade side inclined surface is slidable with respect to the formed wedge side inclined surface, and the blade side inclined surface slides relative to the wedge side inclined surface as the wedge member moves along the drilling hole. A blade member that moves outward in the radial direction of the drilling hole and presses the inner wall of the drilling hole, and in the blade member, a recess for storing the lubricant extends on the blade-side inclined surface in the insertion direction of the wedge member. On the other hand, in the wedge member, a convex portion that can be engaged with the rear end portion of the concave portion protrudes from the inclined surface on the wedge side, and the convex portion is stored in the concave portion as the wedge member moves along the hole. Is pushed toward the inner wall surface on the front end side of the concave portion and injected between the wedge-side inclined surface and the blade-side inclined surface.

  Further, a second aspect of the present invention is a split rock tool, which has a tapered shape, a wedge member that can be inserted into and removed from a drilled hole formed in a processing object, and a distal end of the wedge member A blade-side inclined surface that is slidable with respect to the wedge-side inclined surface formed in the portion, and the blade-side inclined surface is relatively moved with respect to the wedge-side inclined surface as the wedge member moves along the hole. A blade member that moves radially outward of the drilling hole and presses the inner wall of the drilling hole while sliding, and in the wedge member, a recess for storing lubricant extends on the wedge-side inclined surface in the insertion direction of the wedge member On the other hand, in the blade member, a convex portion that can be engaged with the tip of the concave portion protrudes from the inclined surface on the blade side, and the inner wall surface of the concave portion on the rear end side of the concave portion is inside the concave portion as the wedge member moves along the drilling hole. The lubricant is pushed toward the convex portion and injected between the wedge side inclined surface and the blade side inclined surface.

  Furthermore, a third aspect of the present invention is a crushing method, wherein the step of preparing the above-mentioned swarf tool, the step of replenishing the recess with a lubricant, the step of inserting the blade member into the hole, and the lubricant With the convex portion engaged with the replenished concave portion, the wedge side inclined surface and the blade side are pressed by press-fitting the tip of the wedge member into the hole while sliding the wedge side inclined surface against the blade side inclined surface. And a step of crushing the periphery of the drilling hole while injecting a lubricant between the inclined surfaces.

  As described above, according to the present invention, the concave portion is provided on one of the wedge-side inclined surface and the blade-side inclined surface, and the convex portion is provided on the other side. Then, as the wedge member is moved along the hole in a state where the convex portion is engaged with the concave portion storing the lubricant, the blade-side inclined surface is relatively moved with respect to the wedge-side inclined surface. While sliding, the blade member moves outward in the radial direction of the drilling hole and presses the inner wall of the drilling hole, thereby splitting the object to be processed. During this split rock treatment, the lubricant stored in the recess as the wedge member is inserted is injected between the wedge side inclined surface and the blade side inclined surface, and between the wedge side inclined surface and the blade side inclined surface. Reduce friction. As a result, the seizure between the wedge member and the blade member can be more reliably suppressed.

It is a figure which shows the rock rock tool and breaker used when implementing one Embodiment of the crushing method concerning this invention. It is a figure which shows the structure of the split rock tool used when implementing one Embodiment of the crushing method concerning this invention. It is a figure which shows the structure of the front-end | tip part of the wedge member and blade member of a rock rock tool. It is a figure which shows the structure of a swarf tool when a process target is swarted with the swarf tool shown in FIG. It is a figure which shows other embodiment of the split rock tool concerning this invention. It is a figure which shows another embodiment of the split rock tool concerning this invention. It is a figure which shows other embodiment of the split rock tool concerning this invention. It is a figure which shows another embodiment of the split rock tool concerning this invention.

The crushing method according to the present invention includes the following steps (1) to (6),
Step (1): forming a hole in a processing object such as rock, bedrock or concrete structure,
Step (2): Replenish and store a lubricant such as grease in the recess provided in the blade member,
Step (3): preparing a split rock tool composed of a wedge member, a plurality of blade members, and a connecting mechanism for connecting the plurality of blade members to each other;
Step (4): Inserting a plurality of blade members into the drilling holes and inserting a leading end portion of the wedge member between the plurality of blade members. At this time, the lubricant is stored in the convex portion provided on the wedge member. Engage with the recess to prepare for lubricant injection.
Step (5): The tip of the wedge member is press-fitted with a breaker piston.
Step (6): After removing the breaker, a pulling tool is set at the rear end of the wedge member, and after pulling out the wedge member using the pulling tool, a plurality of blade members connected to each other by a connecting mechanism are provided. to recover,
Is to break up the object to be processed and crush the periphery of the drilling hole. In particular, a split rock tool and a drawing tool having the same structure as that described in Patent Document 9 except that a lubricant injection structure for more reliably suppressing seizure between the wedge member and the blade member is provided. Is used.

  FIG. 1 is a view showing a swarf tool and a breaker used in carrying out an embodiment of a crushing method according to the present invention. The split rock tool 1 can be inserted / removed between two blade members 11 and 12, a connecting mechanism 13 that connects the rear ends of the blade members 11 and 12, and between the blade members 11 and 12. And a wedge member 14 formed on the surface. The two blade members 11 and 12 are connected to each other by the connecting mechanism 13. In this specification, the direction X in which the hole 21 is formed with respect to the processing object 2 is referred to as the “hole forming direction” or the “insertion direction of the wedge member”, and the side proceeding in the X direction is referred to as the “tip side”. The opposite side is referred to as “rear end side”. Further, a direction Y in which the blade members 11 and 12 are arranged in a direction orthogonal to the hole forming direction X is referred to as an “arrangement direction”.

  FIG. 2 is a diagram showing a configuration of a swarf tool used when an embodiment of the crushing method according to the present invention is executed. FIG. 3 is a diagram showing the configuration of the tip of the wedge member and the blade member of the split rock tool. Furthermore, FIG. 4 is a figure which shows the structure of the swarf tool when a processing target is swarfed by the swarf tool shown in FIG. In FIG. 2, (c) is a side view of the split rock tool 1, and (b-1) to (b-4) are cross-sectional views of the wedge member and the blade member at different positions in the insertion direction X. . Moreover, (a) is the AA arrow directional view of FIG.2 (c). 4A and 4B are cross-sectional views of the wedge member and the blade member at positions different from each other in the insertion direction X. Moreover, the code | symbol W1 in (b-4) of FIG. 2 and the code | symbol W2 in (b-4) of FIG. 4 have shown the dimension of the front-end | tip part of the split rock tool 1. FIG.

  In this split rock tool 1, the blade members 11 and 12 have the same shape and the same dimensions. Therefore, while the configuration of the blade member 11 will be described below, the components of the blade member 12 are denoted by the same reference numerals and the description thereof is omitted.

  The blade member 11 includes a flange portion 11a and a pressing portion 11b extending from the lower surface of the flange portion 11a in a direction parallel to the hole forming direction X. As shown in the plan view of FIG. 2A, the flange portion 11a has a sufficiently larger plane size than the pressing portion 11b. More specifically, the flange portion 11 a has a larger plane size than the hole 21, while the pressing portion 11 b has a smaller plane size than the hole 21.

  The flange portion 11a is provided with two through holes 11c and 11d spaced apart from each other by a certain distance in a direction perpendicular to the XY plane, and the flange portion 12a is provided with two through holes 12c and 12d by a certain distance from each other. They are spaced apart in the direction orthogonal to the XY plane. By arranging the inclined surface 11f provided on the blade member 11 and the inclined surface 12e provided on the blade member 12 to face each other, the through holes 11c and 12c are aligned in the Y direction and the through hole 11d. , 12d are arranged in a straight line in the Y direction.

  The surface of the pressing portion 11b that faces the inner wall of the hole 21 is formed with an arc surface along the hole forming direction X as a basic shape, and as a pressing surface that presses the inner wall of the hole 21 as will be described later. Function. Note that the arc surface here does not need to be strictly a part of a circle, and includes a case where the cross section is a part of an ellipse. Moreover, in the press part 11b, the inclined surface is formed in the opposite side to a circular arc surface (press surface). The two blade members 11 and 12 are integrated by connecting the flange portions 11a and 12a to each other by the connecting mechanism 13 described in detail below in a state where the inclined surfaces face each other.

  The coupling mechanism 13 is formed by coil springs 131 to 133, bolts 134 and nuts 135. A coil spring 132 is arranged so as to be sandwiched between through holes 11c and 12c formed in the flange portions 11a and 12a, respectively. A coil spring 131 is disposed on the (−Y) direction side of the through hole 11c, and a coil spring 133 is disposed on the (+ Y) direction side of the through hole 12c. Then, a bolt 134 is inserted through the coil spring 131, the through hole 11 c, the coil spring 132, the through hole 12 c and the coil spring 133, and a nut 135 is screwed into the male thread portion at the tip of the bolt 134. In addition, coil springs 131 to 133, bolts 134, and nuts 135 are also provided on the through holes 11d and 12d side as described above.

  The coil spring 132 urges the blade members 11 and 12 to be separated from each other in the Y direction. The head of the bolt 134 restricts the movement of the blade member 11 in the (−Y) direction, and the nut 135 restricts the movement of the blade member 112 in the (+ Y) direction. Thus, in this embodiment, the Y direction corresponds to an example of the “radial direction” of the present invention. The coil spring 131 is disposed between the blade member 11 and the head of the bolt 134 to urge the blade member 11 in the (+ Y) direction with respect to the head of the bolt 134. Further, the coil spring 133 is disposed between the blade member 12 and the nut 135 to urge the blade member 12 against the nut 135 in the (−Y) direction.

  By providing the connecting mechanism 13 in this manner, the blade members 11 and 12 are connected to each other while being guided by the cylindrical portion of the bolt 134 so as to be movable in the Y direction. Can be adjusted by a nut 135. Further, when the tip portions of the blade members 11 and 12, that is, the pressing portions 11 b and 12 b are inserted into the hole 21, the flange portions 11 a and 12 a are locked to the peripheral surface of the hole 21, and further insertion is possible. Due to the restriction, the split rock tool 1 can be set to the drilling hole 21. Furthermore, the space sandwiched between the inclined surfaces by the integration of the blade members 11 and 12 has a tapered shape that becomes thinner toward the tip side of the blade members 11 and 12. A wedge member 14 having a tapered shape is inserted into this tapered space in the same manner as this space.

  The front end portion of the wedge member 14 has a rectangular shape in a cross section orthogonal to the X direction, and has a tapered shape in which the thickness in the Y direction decreases toward the front end. The (−Y) side surface and (+ Y The side surface is an inclined surface 14a (FIG. 3). Further, a first gripped portion 14b gripped by the two gripping members 32 (FIG. 3) and a second gripped portion 14c gripped by the extraction tool are provided at the rear end portion of the wedge member 14. Yes. Among these, the 1st to-be-held part 14b is finished in the column shape. On the other hand, the 2nd to-be-held part 14c is located in the front end side rather than the 1st to-be-held part 14b, and is finished in the rectangular parallelepiped shape. And the recessed part 14d is provided in the (-Y) direction side surface and the (+ Y) direction side surface, and the wedge member 14 is hold | maintained by the extraction tool by inserting the engaging member of an extraction tool in each recessed part 14d, and being pinched | interposed. On the other hand, the holding of the wedge member 14 by the extraction tool is released by the disengagement of the engaging member from each recess 14d. Further, reference numerals 136 and 137 in FIG. 2 are hooks for suspending a connecting body formed by connecting the blade members 11 and 12 by the connecting mechanism 13, and the hooks 136 and 137 are upper surfaces of the flange portions 11a and 12a, respectively. The wire 138 can be attached.

  As shown in FIG. 1, the breaker 3 for press-fitting the wedge member 14 is attached to an arm 51 of a construction vehicle 5 such as a hydraulic power shovel via a bracket 52. Therefore, the operator can control the position and posture of the breaker 3 by operating the operation lever of the construction vehicle 5 and controlling the position and angle of the arm 51.

  The split rock tool 1 configured as described above is provided with a lubricant injection structure as described in detail below. This injection structure is formed by concave portions 11e and 12e provided on the inclined surfaces 11f and 12f of the blade members 11 and 12, respectively, and convex portions 14e provided on the inclined surface 14a of the wedge member 14. The inclined surfaces 11 f and 12 f of the blade members 11 and 12 are finished so as to be slidable with respect to the inclined surface 14 a of the wedge member 14. On the inclined surface 11f, the two concave portions 11e are extended in the insertion direction X of the wedge member 14 while being spaced apart from each other by a predetermined interval, and the two concave portions 12e are also spaced from each other by a predetermined interval on the inclined surface 12e. However, it extends in the insertion direction X of the wedge member 14. The rear ends of the recesses 11e and 12e extend to the vicinity of the flanges 11a and 12a, respectively. On the other hand, the front ends of the recesses 11e and 12e extend to the vicinity of the front ends of the pressing portions 11b and 12b, respectively. For this reason, the lubricant 6 such as grease can be stored in the recesses 11e and 12e. As shown in the enlarged cross-sectional view of the right middle stage of FIG. 3, the tip side inner wall surface 12g of the recess 12e protrudes spherically inside the recess 12e, and the tip side inner wall surface of the recess 11e is not shown in the figure. It is finished in the same shape as the side inner wall surface 12g.

  On the other hand, in the wedge member 14, the convex part 14e which can be engaged with the rear-end part of the recessed parts 11e and 12e is protrudingly provided toward the press part 11b, 12b of the blade members 11 and 12 from the inclined surface 14a. In this embodiment, as shown in the enlarged cross-sectional view on the upper right side of FIG. 3, the front end side outer wall surface 14f of the convex portion 14e has a shape that can be engaged with the inner wall surface on the front end side of the concave portions 11e, 12e, that is, the spherical surface from the concave portion 12e. It has a recess shape that is recessed in a shape. Then, as shown in FIGS. 1 and 2, when the two blade members 11, 12 are inserted into the hole 21 and the tip of the wedge member 14 is inserted between the blade members 11, 12 (step (4) )), The convex portion 14e is located at the rear end of the concave portions 11e and 12e.

  When the rear end portion of the wedge member 14 is hit by the piston of the breaker 3 and the front end portion of the wedge member 14 is press-fitted in the insertion direction X, the wedge member 14 extends along the hole 21 as shown in FIG. Inserted and moved. Along with this, the blade members 11 and 12 move radially outward of the hole 21 as indicated by an arrow AR in the figure while sliding the inclined surfaces 11f and 12f relative to the inclined surface 14a. The inner wall of the hole 21 is pressed. As a result, the processing object 2 is split. Further, during this split rock treatment, on the blade member 12 side, the convex portion 14e pushes the lubricant 6 stored in the concave portion 12e toward the tip side inner wall surface 12g of the concave portion 12e as the wedge member 14 is inserted. Inject between the inclined surfaces 12f and 14a. Also on the blade member 11 side, the blade member 12 stored in the concave portion 11e of the blade member 11 is injected between the inclined surfaces 11f and 14a in the same manner as the blade member 12 side. The action of the injected lubricant 6 reduces the friction between the inclined surface 14a and the inclined surfaces 11f and 12f. As a result, the seizure between the wedge member 14 and the blade members 11 and 12 can be more reliably suppressed.

  1 to 4, the inclined surface 14a corresponds to an example of the “wedge side inclined surface” of the present invention, and the inclined surfaces 11f and 12f are examples of the “blade side inclined surface” of the present invention. It corresponds to. The directions (+ Y) and (−Y) correspond to an example of the radially outer side of the hole 21.

  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 above embodiment, the two concave portions 12e are provided on the inclined surface 12f and the convex portions 14e are provided for each concave portion 12e. However, the number of the concave portions 12e and the convex portions 14e is not limited to this. Is optional. For example, as shown in FIG. 5, six concave portions 12e may be provided on the inclined surface 12f and a convex portion 14e may be provided for each concave portion 12e. In addition, one concave portion 12e may be provided on the inclined surface 12f and one convex portion 14e may be provided corresponding to the concave portion 12e. The same applies to the number of concave portions 11e provided on the inclined surface 11f and the number of convex portions 14e provided corresponding to the concave portions 11e. Moreover, in the said embodiment, although the number of the recessed parts 11e and 12e is "2", both may be inconsistent. In short, the convex portions 14e can be provided to correspond to the concave portions 11e on a one-to-one basis, and the convex portions 14e can be provided to correspond to the concave portions 12e on a one-to-one basis. Moreover, in the said embodiment, although the recessed part is provided in both the inclined surfaces 11f and 12f, you may provide a recessed part only in one side.

  Moreover, in the said embodiment, although the front end side inner wall surface 12g of the recessed part 12e is finished in the shape which protruded spherically, the shape of the front end side inner wall surface 12g is not limited to this, For example, the right side of FIG. You may finish in a taper shape as shown to a lower enlarged drawing drawing. Correspondingly, the front end side outer wall surface 14f of the convex portion 14e may be finished to a shape that can be engaged with the front end side inner wall surface of the concave portion 12e. Further, these points are the same in the blade member 11.

  Further, in the above embodiment, the wedge member 14 having the convex portion 14 can be manufactured by applying a cutting process to the metal block prepared for manufacturing the wedge member 14, but the processing accuracy is limited. Yes, when the convex portion 14e is slid with respect to the concave portions 11e and 12e, for example, a gap 16 may be generated as shown in the enlarged right end view in FIG. When such a gap 16 is generated, it is difficult to supply the lubricant satisfactorily. Therefore, as shown in the figure, a concave portion 14f is provided on the inclined surface 14a of 14 at the tip side of the convex portion 14, and a close contact member 15 formed of a resin material or a rubber material and capable of being in close contact with the concave portion 12e is provided in the concave portion 14f. It may be provided. That is, the tip end side portion of the convex portion 14e is configured by the close contact member 15, so that the close contact member 15 is slidable while being in close contact with the concave portion 12e, and the lubricant 6 in the concave portion 12e is allowed to slide on the convex portion 14e. Without leaking to the rear end side, it can be surely pushed toward the front end side inner wall surface 12g of the recess 12e and injected between the inclined surfaces 12f, 14a. The same applies to the concave portion 11e side.

  Further, in order to retract the surplus lubricant 6 during the split rock treatment, for example, as shown in FIG. 7, retreat holes 11g and 12g may be provided in the recesses 11e and 12e of the blade members 11 and 12, respectively. In this case, the lubricant 6 is stored only in the recesses 11e and 12e before the wedge member 14 is inserted, that is, before the split rock treatment, and the surplus lubricant 6 generated when the wedge member 14 is inserted is retreated holes 11g and 12g. Can be recovered.

  Moreover, in the said embodiment, although the recessed parts 11e and 12e are provided in the blade members 11 and 12, and the convex part 14e is provided in the wedge member 14, these relations may be reversed. For example, as shown in FIG. 8, a concave portion 14g extending in the insertion direction X may be provided on the inclined surface 14a of the wedge member 14, and a convex portion 12h that can be engaged with each concave portion 14g may be provided on the blade member 12. . In this case, as the wedge member 14 is inserted into the drilling hole 21, the rear end side inner wall surface 14h provided in the wedge member 14 is stored in the recess 14g, so that the lubricant 6 is supplied to the blade member 12. It pushes toward the provided convex part 12h and inject | pours between the wedge side inclined surface 14a and the blade | wing side inclined surface 12f.

  For the embodiment in which the relationship between the concave portion and the convex portion is reversed as described above, the configuration (close contact member or retracting hole) shown in FIG. 6 or 7 may be adopted. That is, by forming the rear end side end portion of the convex portion 12h with a close contact member, the lubricant 6 in the concave portion 14e does not leak to the front end side of the convex portion 12h, and the rear end side inner wall surface 14h of the concave portion 14e is ensured. It is possible to inject between the inclined surfaces 12f and 14a by pushing toward the surface. The same applies to the other side. Further, in order to retract the excess lubricant 6 during the split rock treatment, a recess hole may be provided in the recess 14e.

  Further, in the above embodiment, two wedge side inclined surfaces 14a facing the radial direction of the different drilling holes 21 are provided, and the blade members 11 and 12 can slide relative to the wedge member 14 for each wedge side inclined surface 14a. Although the present invention is applied to the split rock tool 1 provided in the present invention, the application object of the present invention is not limited to this, and one or three or more wedge-side inclined surfaces 14a are provided, The present invention can also be applied to a split rock tool in which a blade member is slidable with respect to the wedge member 14 for each side inclined surface 14a.

  In the above-described embodiment, the blade members 11 and 12 are cut while the blade side inclined surfaces 11f and 12f slide relative to the wedge side inclined surface 14a as the wedge member 14 is inserted into the hole 21. The present invention is applied to the split rock tool 1 that moves outward in the radial direction of the hole 21 and presses the inner wall of the hole 21. For example, as described in Patent Document 6 and Patent Document 7, The present invention can be applied to a swarf tool that is moved in the discharge direction along. In short, the present invention has a tapered shape, a wedge member that can be inserted into and removed from a hole formed in the object to be processed, and a blade side that is slidable with respect to a wedge-side inclined surface formed in the wedge member. As the wedge member moves along the drilling hole, the inner wall of the drilling hole moves radially outward while sliding the blade-side inclined surface relative to the wedge-side tilting surface. It can be applied to a split rock tool provided with a blade member that presses.

  Furthermore, in the said embodiment, although the said process (2)-(6) is continuously performed with respect to one drilling hole 21, all or one part of those processes may be performed in parallel. .

  The present invention can be applied to all swarf tools for splitting a processing object such as rock, rock, and concrete structure, and to all crushing techniques for crushing a processing object using the tool.

DESCRIPTION OF SYMBOLS 1 ... Split rock tool 2 ... Processing object 11, 12 ... Blade | wing member 11b, 12b ... Press part 11f, 12f ... (blade side) inclined surface 11g, 12g ... Retraction hole 12e, 14g ... Recess 12g ... Tip side inner wall surface 12h, 14e ... convex portion 14 ... wedge member 14a ... (wedge side) inclined surface 14h ... rear end side inner wall surface 15 ... intimate member X ... insertion direction of the wedge member Y ... radial direction of the drilling hole

A first aspect of the present invention is a split rock tool, which has a tapered shape, a wedge member that can be inserted into and removed from a drilled hole formed in a processing object, and a distal end portion of the wedge member. The blade side inclined surface is slidable with respect to the formed wedge side inclined surface, and the blade side inclined surface slides relative to the wedge side inclined surface as the wedge member moves along the drilling hole. A blade member that moves outward in the radial direction of the drilling hole and presses the inner wall of the drilling hole. The blade member has a front end side inner wall surface at the front end side and a lubricant on the rear end side from the front end side inner wall surface. While the wedge member extends in the insertion direction of the wedge member on the blade-side inclined surface, while the wedge member has a convex portion that can be engaged with the recess on the rear end side of the inner wall surface on the front end side of the recess. Projecting from
With the movement of the wedge member along the hole, the convex part is inclined inside the concave part by pushing the lubricant stored between the convex part and the inner wall surface on the front end side toward the inner wall surface on the front end side of the concave part. It is characterized by injecting between the surface and the blade-side inclined surface.

Further, a second aspect of the present invention is a split rock tool, which has a tapered shape, a wedge member that can be inserted into and removed from a drilled hole formed in a processing object, and a distal end of the wedge member A blade-side inclined surface that is slidable with respect to the wedge-side inclined surface formed in the portion, and the blade-side inclined surface is relatively moved with respect to the wedge-side inclined surface as the wedge member moves along the hole. A blade member that moves radially outward of the drilling hole and presses the inner wall of the drilling hole while sliding, and the wedge member has a rear end side inner wall surface on the rear end side and a front end than the rear end side inner wall surface The concave portion for storing the lubricant on the side extends in the wedge-side inclined surface in the insertion direction of the wedge member, while the blade member has a convex portion that can be engaged with the concave portion on the front end side than the inner wall surface on the rear end side of the concave portion. projecting from the vane-side inclined surface, the convex portion and the rear end side inner wall surface of the interior of the rear side inner wall surface of a concave portion of the concave portion along with the movement of the wedge member along the drilling It is characterized by injecting between the pooled lubricant impelled toward the protrusion wedge-side inclined surface and the blade-side inclined surface between.

Further, in the above embodiment, the wedge member 14 having the convex portion 14 can be manufactured by applying a cutting process to the metal block prepared for manufacturing the wedge member 14, but the processing accuracy is limited. Yes, when the convex portion 14e is slid with respect to the concave portions 11e and 12e, for example, a gap 16 may be generated as shown in the enlarged right end view in FIG. When such a gap 16 is generated, it is difficult to supply the lubricant satisfactorily. Therefore, as shown in the figure, the recess 14h in the resin material can be in close contact with the recess 12e or rubber material is formed close member 15 provided with a recess 14h to the inclined surface 14a of the 14 at the tip end of the protrusion 14 It may be provided. That is, the tip end side portion of the convex portion 14e is configured by the close contact member 15, so that the close contact member 15 is slidable while being in close contact with the concave portion 12e, and the lubricant 6 in the concave portion 12e is allowed to slide on the convex portion 14e. Without leaking to the rear end side, it can be surely pushed toward the front end side inner wall surface 12g of the recess 12e and injected between the inclined surfaces 12f, 14a. The same applies to the concave portion 11e side.

Claims (9)

A wedge member having a tapered shape, the tip of which can be inserted into and removed from a hole formed in the object to be processed;
A blade-side inclined surface that is slidable with respect to a wedge-side inclined surface formed at a tip portion of the wedge member, and moves with respect to the wedge-side inclined surface as the wedge member moves along the hole; A blade member that moves radially outward of the drilling hole and presses the inner wall of the drilling hole while relatively sliding the blade-side inclined surface;
In the blade member, a concave portion for storing a lubricant extends on the blade-side inclined surface in the insertion direction of the wedge member, while in the wedge member, a convex portion engageable with a rear end portion of the concave portion is provided on the wedge member. Protruding from the side inclined surface,
With the movement of the wedge member along the hole, the lubricant stored in the concave portion is pushed toward the inner wall surface on the distal end side of the concave portion, and the wedge-side inclined surface and the blade A split rock tool which is injected between the side inclined surface. A split rock tool according to claim 1,
The wedge member is provided with N wedge-side inclined surfaces (where N is a natural number of 2 or more) facing the radial directions of the different drilling holes,
The blade member is provided slidably with respect to the wedge member for each wedge-side inclined surface,
At least one of the N blade members is provided with the concave portion, and the convex portion is provided on the wedge-side inclined surface that is in sliding contact with the blade-side inclined surface for each blade member provided with the concave portion. A split rock tool. A split rock tool according to claim 1 or 2,
A split rock tool which is a close contact member which is made of a resin material or a rubber material and is slidable in close contact with the recess. A split rock tool according to any one of claims 1 to 3,
The blade member is provided with a retreat hole for retreating a part of the lubricant pushed toward the inner wall surface on the front end side of the recess from the recess. A wedge member having a tapered shape, the tip of which can be inserted into and removed from a hole formed in the object to be processed;
A blade-side inclined surface that is slidable with respect to a wedge-side inclined surface formed at a tip portion of the wedge member, and moves with respect to the wedge-side inclined surface as the wedge member moves along the hole; A blade member that moves radially outward of the drilling hole and presses the inner wall of the drilling hole while relatively sliding the blade-side inclined surface;
In the wedge member, a concave portion for storing a lubricant extends on the wedge-side inclined surface in the insertion direction of the wedge member, while in the blade member, a convex portion that can be engaged with a tip portion of the concave portion is on the blade side. Protruding from an inclined surface,
Along with the movement of the wedge member along the drilling hole, the rear end side inner wall surface of the concave portion pushes the lubricant stored in the concave portion toward the convex portion, and the wedge side inclined surface and the A split rock tool which is injected between the blade side inclined surface. A split rock tool according to claim 5,
The wedge member is provided with N wedge-side inclined surfaces (where N is a natural number of 2 or more) facing the radial directions of the different drilling holes,
The blade member is provided slidably with respect to the wedge member for each wedge-side inclined surface,
At least one of the N wedge-side inclined surfaces is provided with the concave portion, and the blade-side inclined surface of the blade member that is in sliding contact with the wedge member for each wedge-side inclined surface provided with the concave portion. A split rock tool provided with the convex portion. A split rock tool according to claim 5 or 6,
A split rock tool which is a close contact member which is made of a resin material or a rubber material and is slidable in close contact with the recess. A split rock tool according to any one of claims 5 to 7,
The wedge member is provided with a retreat hole for retreating a part of the lubricant pushed toward the convex portion from the concave portion. A step of preparing the split rock tool according to any one of claims 1 to 8,
Replenishing the recess with the lubricant;
Inserting the blade member into the hole,
The front end of the wedge member is press-fitted into the hole while the wedge-side inclined surface is slidably contacted with the blade-side inclined surface with the convex portion engaged with the concave portion supplied with the lubricant. And crushing the periphery of the hole while injecting the lubricant between the wedge-side inclined surface and the blade-side inclined surface.

Images