JP4615372B2 - Drilling device - Google Patents

Description

  The present invention relates to a perforating apparatus capable of forming a groove having a plurality of continuous holes.

2. Description of the Related Art There is known a drilling apparatus that can form a plurality of holes continuously in a rock mass of a natural ground at regular intervals and can form a groove in which a plurality of holes are continuous. This perforating apparatus will be described with reference to FIG. In the following description, the right side of FIG. 6 is defined as “front” and the left side is defined as “rear”. The drilling device 1P is provided at a base 17P called a guide cell connected to an arm of a pilot machine (not shown), a rock drill 2P provided on the base 17P so as to be movable back and forth, and a front portion of the base 17P. The supported support portion 13P, the guide rod 11P connected to the support portion 13P and protruding forward, and the drill portion 3P of the rock drill 2P can be slid in the direction along the axis of the guide rod 11P. The piercing rod 14P and the guide rod 11P are connected to each other with a connecting member 15P called a linear guide. The rock drill 2P includes a drill unit 3P and a driving device (not shown) that drives the drill unit 3P. The drill unit 3P includes a rotating shaft 14d that is rotated by a driving device, and a drilling rod 14P that is coupled to the front end of the rotating shaft 14d so as to rotate together with the rotating shaft 14d. The piercing rod 14P includes a cutting portion 14b called a piercing bit at the front end. The guide rod 11P has a rear end portion connected and fixed to the support portion 13P and a sharp cap 12P at the front end. The connecting member 15P includes a connecting portion 15b connected to the perforating rod 14P, a slide member 15a that slides inside the cylinder of the guide rod 11P, and a connecting plate 15c that connects the connecting portion 15b and the slide member 15a. At the front end of the connecting plate 15c of the connecting member 15P, a cutting blade portion 16P called a tip, which is a hard member for rock crushing, is provided. A regulating member 18P is attached to the front surface of the support portion 13P. The drill part 3P penetrates the hole 19P formed in the support part 13P, and can move back and forth. The support portion 13P connected to the front end of the base 17P is made of a rigid body such as a steel plate extending vertically upward with respect to the extending direction of the base 17P.
A drilling operation by the punching apparatus 1P will be described. First, the driving device of the rock drill 2P is driven and the rock is cut by the cutting portion 14b at the front end of the drill portion 3P to form a leading hole (not shown). Next, the guide rod 11P is attached to the support portion 13P. Then, the guide rod 11P is inserted into the preceding hole by controlling the arm with the pilot. Thereafter, the driving device of the rock drilling machine 2P is driven to cut the rock with the cutting portion 14b of the drill portion 3P and the cutting blade portion 16P of the connecting member 15P. A row hole is formed by the cutting portion 14b, and a connection hole (not shown) that connects the preceding hole and the subsequent hole at a constant interval is formed by the cutting blade portion 16P. After that, when drilling holes, the holes formed before drilling the holes are used as preceding holes to form a plurality of holes, so that a plurality of holes are continuously connected like a daisy chain. Hole grooves called drilling holes, that is, grooves in which the periphery of a plurality of holes are connected to each other by connecting holes can be formed.
JP 2002-327589 A

  In the operation of inserting the guide rod 11P of the drilling device 1P described above into the preceding hole, the advance (extension) direction of the advance hole formed in the rock is not coincident with the advance direction of the guide rod 11P advanced by the arm Even if the front end of the guide rod 11P is pushed into the leading hole after the front end of the guiding rod 11P is inserted into the leading hole by manipulating the arm of the pilot, the leading end of the guiding rod 11P collides with the inner wall of the leading hole. The guide rod 11P cannot be inserted into the preceding hole. Therefore, after inserting the front end of the guide rod 11P into the preceding hole, the arm is operated to finely adjust the position and traveling angle of the guide rod 11P, or the guide rod 11P is inserted into the preceding hole, or in advance, It is necessary to insert the guide rod 11P into the preceding hole after maneuvering the arm to finely adjust the position and traveling angle of the guide rod 11P so that the traveling direction of the guide rod 11P matches the traveling direction of the preceding hole. However, the drive of the arm is a hydraulic drive, and it is difficult to adjust the fine movement and angle of the arm. Therefore, when the traveling direction of the leading hole formed in the rock is not coincident with the traveling direction of the guide rod 11P advanced by the arm, the position and the traveling angle of the guide rod 11P are finely adjusted by manipulating the arm. However, the above-described perforating apparatus 1P has a problem that it is difficult to insert the guide rod 11P into the preceding hole.

The drilling device according to the present invention includes a base connected to the pilot, a rock drill provided on the base so as to be movable back and forth, a support provided at the front of the base, and a support connected to the support A guide rod that protrudes forward and a connecting member that connects the guide rod and the drill portion of the rock drill together, and the connecting member can slide the drill portion back and forth in the direction along the axis of the guide rod In the perforating apparatus, the support portion includes a base side support portion attached to the front portion of the base, a guide rod attachment body attached to the rear portion of the guide rod, a base side support portion, and a guide rod attachment body. The guide rod is maintained in a movable state with respect to the base side support portion by the connecting device. The connecting device is formed by an elastic member having an upper mounting portion attached to the guide rod mounting body and a lower mounting portion attached to the base side support portion, and the upper mounting portion and the guide rod mounting body are connected to each other, By connecting the lower mounting portion and the base support portion to each other, the guide rod is kept movable with respect to the base support portion due to the elasticity of the elastic member, and the elastic member is a coil spring. The elastic member is a leaf spring, and the connecting device is formed of a plate member and an elastic member that connect the base side support portion and the guide rod mounting body to each other, and the plate member and the guide rod mounting body The plate member and the guide rod mounting body are connected to each other in a state where an elastic member is interposed between the plate member and at least one of the plate member and the base support portion, and the plate member and the base support portion are connected to each other. Are connected to each other, And the guide rod by the elastic member is maintained in the movable state with respect to the base-side support portion, a base coupled to the steering motor, a rock drill mounted movably back and forth on the base, A support portion provided at a front portion of the base; a guide rod connected to the support portion and protruding forward; and a connecting member that connects the guide rod and the drill portion of the rock drill together. The drilling device, wherein the drill portion is slidable back and forth in the direction along the axis of the guide rod, includes a connecting device for connecting the rear portion of the guide rod and the support portion to each other, and the guide rod is connected to the support portion by the connecting device It is also characterized by being maintained in a movable state.

According to the drilling device of the present invention, since the guide rod is maintained in a movable state with respect to the base side support portion by the connecting device, the traveling direction of the preceding hole formed in the rock and the guide rod advanced by the arm If the direction of travel does not match and the pilot arm is advanced after the front arm of the guide rod is inserted into the leading hole by manipulating the arm of the controller, the guide rod and the leading hole will collide with the guiding rod. By the applied force, the guide rod moves, and the guide rod can be easily inserted into the preceding hole. Since the guide rod is maintained in a movable state with respect to the base side support portion by the elasticity of the elastic member of the coupling device, the elasticity of the elastic member is caused by the force applied to the guide rod by the collision between the guide rod and the preceding hole. The guide rod moves and the guide rod can be easily inserted into the preceding hole. Because the elastic member is a coil spring, the force applied to the guide rod by the collision between the guide rod and the preceding hole causes the guide rod to move by changing the traveling direction of the guide rod due to the elasticity of the elastic member. By moving in a direction perpendicular to the direction along, the guide rod can be easily inserted into the leading hole. Since the elastic member is a leaf spring, the force applied to the guide rod by the collision between the guide rod and the preceding hole causes the guide rod to move by changing the direction of travel of the guide rod due to the elasticity of the elastic member. By moving in a direction perpendicular to the direction along, the guide rod can be easily inserted into the leading hole. In a state where the coupling device is interposed between the plate material and the guide rod mounting body or between the plate material and the base side support portion with an elastic member interposed therebetween, the plate material and the guide rod mounting body are mutually connected. Since the plate member and the base side support portion are connected to each other, the guide rod is guided by the elasticity of the elastic member by the force applied to the guide rod by the collision of the guide rod and the preceding hole. By moving so as to change the traveling direction of the rod, the guide rod can be easily inserted into the preceding hole. A connecting device for connecting the rear portion of the guide rod and the support portion to each other is provided, and the guide rod is maintained in a movable state with respect to the support portion by the connecting device, so that the guide rod is added to the guide rod by the collision of the preceding hole. By the force, the guide rod moves and the guide rod can be easily inserted into the preceding hole.

  1 to 3 show the best mode of the present invention, FIG. 1 shows a drilling device, FIG. 2 shows an exploded drilling device, and FIG. 3 shows the operation of the drilling device. In FIG. 1, the side where the guide guide is located is defined as “front”, and the side where the drive device is located is defined as “rear”.

  With reference to FIG. 1, the punching apparatus 1 of this form is demonstrated. The drilling device 1 is attached to the arm 2 a of the pilot 2. The controller 2 is a machine called, for example, a drill jumbo. The drilling device 1 includes a base 4, a rock drill 5, a guide rod 6, a support portion 7, and a connecting member 8 called a linear guide. The base 4 includes guide rails 4a on the upper surface. A drive device 9 of the rock drill 5 is mounted on the guide rail 4a so as to be movable in the front-rear direction. The rock drill 5 includes a driving device 9 and a drill unit 3. The drill unit 3 includes a rotating shaft 10 and a drilling rod 11. The drive device 9 includes a rotational drive source by a motor (not shown) and a front and rear drive source by a hydraulic mechanism. A rotary shaft 10 is rotatably connected to a rotational drive source of the drive device 9. The piercing rod 11 is connected to the front end of the rotary shaft 10 and rotates with the rotational force of the rotary shaft 10. The piercing rod 11 includes a cutting portion 41 called a piercing bit at the front end. A cutting blade 42 is provided on the front surface of the cutting portion 41. The front-rear position of the rock drill 5 can be adjusted by manipulating the forward / backward moving mechanism (not shown) connected to the drive device 9 with the controller 2 and moving the housing of the drive device 9 back and forth. At the time of drilling by the rock drill 5, the driving device 9 is driven to rotate the rotation shaft by the rotation driving source, and the casing of the driving device 9 is vibrated back and forth by the front and rear driving source to cause the drilling rod 11 to rotate and hit. Since the cutting part 41 of the piercing rod 11 cuts the piercing object such as a natural rock, the hole can be formed in the piercing object. The connecting member 8 connects the piercing rod 11 and the guide rod 6 to each other, and keeps the piercing rod 11 in a direction along the axis G of the guide rod 6 while keeping the distance between the piercing rod 11 and the guide rod 6 constant. It should be slidable. The support portion 7 includes a base side support portion 13, a guide rod mounting body 14, and a connecting device 15, and the base side support portion 13 and a base made of a plate such as a steel plate connected and fixed to the front end of the base 4. A guide rod mounting body 14 made of a plate such as a steel plate disposed above the base support portion 13 is connected to each other by two right and left connecting devices 15; 15. The drill section 3 of the rock drill 5 can move forward and backward through a hole 16 formed in the guide rod mounting body 14. The rear portion of the guide rod 6 is connected and fixed to the guide rod mounting body 14 and extends forward of the guide rod mounting body 14. A regulating member 18 is attached to the front surface of the base side support portion 13. The base 4 of the drilling device 1 and the arm 2a of the controller 2 are connected to each other, and the arm 2a of the controller 2 is driven by a hydraulic mechanism (not shown). Therefore, when the operator controls the movement of the arm 2a by manipulating the pilot 2 to adjust the position and angle of the guide rod 6 at the front end of the drilling device 1, and when inserting the guide rod 6 into the preceding hole The guide rod 6 is positioned.

  With reference to the exploded perspective view of the punching device 1 of FIG. 2, the structure of the punching device 1 will be described in detail. The coupling device 15 includes a coil spring 20 made of steel as an elastic member, an upper attachment portion 21 and a lower attachment portion 22, and an upper attachment portion 21 such as a steel cylinder and a steel cylinder. The lower mounting portion 22 is connected to each other by a steel coil spring 20. That is, the upper end of the coil spring 20 is connected to the upper mounting portion 21, and the lower end of the coil spring 20 is connected to the lower mounting portion 22. The upper attachment portion 21 of the coupling device 15 is fixed to the guide rod attachment body 14 by a fixture 23, and the lower attachment portion 22 is fixed to the base side support portion 13 by the fixture 23. The fixing tool 23 is formed by forming a rod such as a steel rod into a U shape and forming screw portions (not shown) at both ends. A pair of left and right holes 24; 24 are formed on the left and right sides of the base side support portion 13 and the guide rod mounting body 14 so as to penetrate the U-shaped ends of the fixture 23 through the front and rear of the plate. The pair of left and right holes 24; 24 are formed vertically on the left and right sides of the base side support portion 13 and the guide rod mounting body 14. A lower mounting portion 22 of the coupling device 15 is disposed between a pair of left and right holes 24; 24 on the front surface of the base side support portion 13, and both ends of the U-shape of the fixture 23 are left and right from the front of the base side support portion 13. The fixing tool 23 protrudes rearward of the base side support part 13 in a state where the lower mounting part 22 is pressed against the base side support part 13 inside the U-shape of the fixture 23 through the pair of holes 24; The lower mounting portion 22 and the base side support portion 13 are connected and fixed by attaching and fastening nuts (not shown) to the screw portions at both ends of the U-shape. An upper mounting portion 21 is disposed between a pair of left and right holes 24; 24 on the front surface of the guide rod mounting body 14, and a pair of left and right holes 24; 24 extends from the front of the guide rod mounting body 14 to both ends of the U-shaped fixture 23. In the state where the upper mounting portion 21 is pressed against the guide rod mounting body 14 on the inner side of the U shape of the fixing tool 23, the screw portions at both ends of the U shape of the fixing tool 23 projecting rearward of the guide rod mounting body 14. By attaching and fastening a nut (not shown), the upper mounting portion 21 and the base side support portion 13 are connected and fixed. As described above, since the coupling device 15 is formed by the coil spring 20 including the upper mounting portion 21 and the lower mounting portion 22, the guide rod mounting body 14 and the base side support portion 13 can be easily connected to the coupling device 15. The support part 7 can be easily formed.

  In the center of the guide rod mounting body 14, a hole 25 for positioning and installing the guide rod 6 that is open at the top and penetrates the front and rear of the plate is formed. A hole 16 is formed below the hole 25 so as to penetrate the drill portion 3 of the rock drill 5 so as to be movable back and forth. The hole 25 and the hole 16 are vertically continuous by the communication hole 26. The guide rod 6 is configured such that a conical sharp cap member 29 is detachably attached to a front end of a cylindrical pipe 28. By providing the cap member 29 at the front end of the guide rod 6, the front end of the guide rod 6 can be easily inserted into the preceding hole. The cylindrical pipe 28 has a straight opening groove 30 formed in the direction along the axis of the cylindrical pipe on the outer periphery of the cylindrical pipe. The rear part of the guide rod 6 is attached to the attachment plate 31. A fitting hole 32 is formed in the center of the mounting plate 31 so as to penetrate the front and rear of the plate with the lower part open. The rear part of the guide rod 6 is fitted in the fitting hole 32 of the mounting plate 31 so that the opening groove 30 of the guide rod 6 and the opening part 33 of the fitting hole 32 are aligned. The guide rod 6 and the mounting plate 31 are connected to each other by connecting the periphery of the end portion and the rear surface of the mounting plate 31 by connecting means such as welding. The attachment plate 31 to which the guide rod 6 is attached is connected and fixed to the guide rod attachment body 14. That is, the rear portion of the guide rod 6 is positioned in the installation hole 25, the front surface of the mounting plate 31 is applied to the rear surface of the guide rod mounting body 14, and the positions of the opening 33 and the communication hole 26 are matched in the front-rear direction. By connecting the guide rod attachment body 14 and the attachment plate 31 with a fixture 36 (see FIG. 1) such as a bolt 34 and a nut 35, the guide rod 6 is detachably attached to the guide rod attachment body 14. Since the installation hole 25 is open at the top, the guide rod 6 can be attached from above the hole 25, and the guide rod 6 can be easily attached to and detached from the guide rod attachment body 14.

  The piercing rod 11 includes a connecting member holding body 40 and a cutting portion 41. The connecting member holding body 40 is connected to the front end of the rotating shaft 10. Since the cutting part 41 is detachably attached to the front end of the connecting member holding body 40, the replacement is easy. A cutting blade 42 formed of a super hard material such as chromium molybdenum steel or tungsten steel is provided on the front surface of the cutting portion 41. The connecting member holding body 40 is formed by a front shaft 45 and a rear shaft 46. The front shaft 45 is detachably connected to the rear portion of the cutting portion 41. The rear shaft 46 is detachably connected to the rear portion of the front shaft 45. The rear shaft 46 includes a large-diameter shaft portion 47 having a large diameter provided at the rear portion and a small-diameter shaft portion 48 having a small diameter provided at the front portion of the large-diameter shaft portion 47.

  The connecting member 8 includes a cylindrical body 50, a slide body 51, and a connecting plate 27, and the cylindrical body 50 and the slide body 51 are connected to each other by the connecting plate 27. At the front end of the connecting plate 27, a cutting blade portion 53 called a tip formed of a super hard material such as chromium molybdenum steel or tungsten steel is provided. The front part of the cutting blade part 53 is formed sharply. The cutting edge angle of the front portion of the cutting blade portion 53 is set to about 110 °. The cutting blade 53 is attached to the front end of the connecting plate 27 by a joining means such as welding. The cutting blade portion 53 is at least a position corresponding to the lower end of the guide rod 6 and the upper end of the cutting portion 41 of the drilling rod 11 so that the rock between the guide rod 6 and the cutting portion 41 of the drilling rod 11 can be rocked. It is provided so as to straddle.

  A drilling operation by the punching apparatus 1 will be described. When the first leading hole is formed, the guide rod 6 and the connecting member 8 are removed. That is, the front portion of the small diameter shaft portion 48 and the rear portion of the front shaft 45 are connected in a state where the connecting member 8 is not attached to the small diameter shaft portion 48 of the rear shaft 46 of the drilling rod 11. In this configuration, the drilling rod 11 of the drill unit 3 is advanced forward through the hole 16 of the guide rod mounting body 14, the drill unit 3 is driven by the driving device 9, and the rock is cut by the cutting unit 41 to form the preceding hole. Form.

  After the leading hole is formed, the drill portion 3 is moved rearward from the guide rod attachment body 14, and then the guide rod 6 is attached to the guide rod attachment body 14 as described above. Then, the front shaft 45 is removed from the rear shaft 46 of the perforated rod 11, and the small-diameter shaft portion 48 of the rear shaft 46 is inserted into one end of the hole 52 of the cylindrical body 50 of the connecting member 8 and protrudes to the other end. The front part of the small-diameter shaft part 48 and the rear part of the front shaft 45 are connected. Thereby, the cylindrical body 50 of the connecting member 8 is held by the small-diameter shaft portion 48, and the longitudinal movement of the cylindrical body 50 is restricted by the rear end of the front shaft 45 and the front end of the large-diameter shaft portion 47. 8 is held between the rear end of the front shaft 45 and the front end of the large diameter shaft portion 47 by the small diameter shaft portion 48. That is, the cylindrical body 50 of the connecting member 8 is held in a state where it does not rotate even if the drilling rod 11 rotates. As a detachable connecting means between the front part of the small diameter shaft part 48 and the rear part of the front shaft 45, a male screw part 49 formed at the front part of the small diameter shaft part 48 and a screw hole 49a formed at the rear part of the front shaft 45 are provided. And the front portion of the small-diameter shaft portion 48 is fitted into a non-illustrated fitting hole formed in the rear portion of the front shaft 45 and the screw hole is formed in the non-illustrated screw hole formed in the outer peripheral surface of the fitting hole. And screw connection by fastening the front portion of the small-diameter shaft portion 48. As described above, the connecting member 8 can be attached to the piercing rod 11 only by connecting the small diameter shaft portion 48 to the rear portion of the front shaft 45 through the hole 52 of the cylindrical body 50 of the connecting member 8. The attaching / detaching work of the connecting member 8 can be facilitated. Then, the drill portion 3 is advanced, and the slide body 51 of the connecting member 8 held by the connecting member holding body 40 of the perforating rod 11 is moved from the rear of the mounting plate 31 to the slide rail 55 formed by the cylindrical hole of the guide rod 6. By inserting into the guide rod 6, the connecting member 8 can be attached to the guide rod 6, and the connecting member 8 can be easily attached to and detached from the guide rod 6. The lateral width of the opening 33 of the mounting plate 31, the connecting hole 26 of the guide rod mounting body 14, and the opening groove 30 of the guide rod 6 is formed longer than the width of the connecting plate 27 of the connecting member 8, and the connecting plate 27 can pass through. . Therefore, when the drill portion 3 is advanced forward through the hole 16, the slide body 51 of the connecting member 8 advances forward in the slide rail 55, and the drill portion advances forward along the guide rod 6. Thereby, the drill part 3 becomes movable in the direction along the axis of the guide rod 6 while maintaining a certain distance from the guide rod 6. That is, the connecting member 8 allows the drill portion 3 to move back and forth along the guide rod 6 while maintaining a certain distance from the guide rod 6.

  As described above, after the drill part 3 is slidably attached to the guide rod 6 by the connecting member 8, the driver of the pilot 2 controls the movement of the arm 2 a by maneuvering, and the position of the drilling device 1 The guide rod 6 is inserted into the preceding hole. According to the punching device 1 of this embodiment, the guide rod 6 is maintained in a movable state by the elasticity of the coil spring 20 of the coupling device 15, so that the force applied to the guide rod 6 due to the collision between the guide rod 6 and the preceding hole. Thus, the guide rod 6 can move so as to change the traveling direction of the guide rod 6 or can move in a direction perpendicular to the direction along the guide rod 6. Therefore, for example, as shown in FIG. 3, in the case where the traveling direction of the leading hole 58 formed in the rock 57 of the natural ground does not coincide with the traveling direction of the guide rod 6 advanced by the arm 2a, the guide rod 6 After the front end of the guide rod is inserted into the leading hole 58, when the arm 2a is steered to advance the drilling device 1 forward, the force applied to the guiding rod 6 due to the collision between the leading hole 58 and the guiding rod 6 causes the guide rod attachment body to move forward. 14 moves by force from the guide rod 6 as shown by the arrow F with respect to the base side support portion 13, and the guide rod 6 moves forward in the preceding hole 58 while changing the traveling direction. 58 can be easily inserted. That is, when the advance direction of the leading hole 58 does not coincide with the advance direction of the guide rod 6 advanced by the arm 2a, detailed control of the position and angle of the guide rod 6 difficult by the arm 2a is not performed. The guide rod 6 can be easily inserted into the leading hole 58 by manipulating the arm 2a after the front end of the guiding rod 6 is inserted into the leading hole and moving the punching device 1 forward. Can be easily inserted into the leading hole 58.

  After the guide rod 6 is inserted into the leading hole 58, the front end of the regulating member 18 is abutted against the rock 57, and then the cutting portion 41 at the front end of the drill portion 3 is moved to the rock 57, and then the rock drill 5 is driven. Thus, the cutting portion 41 at the front end of the rock drill 5 cuts the rock 57 below the leading hole 58 and drills a trailing hole (not shown) continuous with the leading hole 58 at a certain interval. At this time, the leading hole 58 and the following hole are drilled by the cutting blade portion 53 of the connecting member 8, thereby forming a connecting hole that connects the leading hole 58 and the following hole. After that, when drilling holes, the holes formed before drilling the holes are used as preceding holes to form a plurality of holes, so that a plurality of holes are continuously connected like a daisy chain. A hole groove called a drilling hole, that is, a groove in which the periphery of a plurality of holes is connected to each other by a connection hole can be formed, and this groove is used for crushing the bedrock 57, for example, excavating a horizontal shaft.

  The punching device 1 of the present invention has a structure in which the guide rod 6 is maintained in a movable state by a connecting device that connects the base side support portion 13 and the guide rod mounting body 14 to each other, or the rear portion of the guide rod 6. What is necessary is just the structure by which the guide rod 6 was maintained in the movable state by the connection apparatus which connects a support part and a support part mutually.

  For example, the coupling device is formed by an elastic member having an upper mounting portion attached to the guide rod mounting body 14 and a lower mounting portion attached to the base side support portion 13, and the guide rod 6 is movable by the elasticity of the elastic member. It is good also as a structure maintained in the state. As the elastic member, the above-described coil spring 20 or a leaf spring not shown may be used.

  Also, as shown in FIG. 4, a plate material 60 such as a steel plate that connects the guide rod mounting body 14 and the base side support portion 13 to each other, an elastic sheet 61 such as a hard rubber sheet as an elastic member, and a bolt 63 A fixing member 62 such as a nut 64 is used, and the elastic sheet 61 is interposed between the plate member 60 and the guide rod mounting body 14 and between the plate member 60 and the base side support portion 13. In this state, the plate member 60 and the guide rod mounting body 14 are connected to each other by the fixture 62, and the plate member 60 and the base side support portion 13 are connected to each other by the fixture 62 to constitute the connecting device 15. Also good. According to the above configuration, the same effect as in the best mode 1 can be obtained, and it is economically advantageous as compared with the case where the elastic member such as the coil spring or the leaf spring described above is used. Further, the plate member 60 and the guide rod attachment are provided with the elastic sheet 61 interposed between at least one of the plate member 60 and the guide rod attachment body 14 or between the plate member 60 and the base side support portion 13. The connecting device 15 may be configured by connecting the body 14 to each other by the fixing tool 62 and connecting the plate member 60 and the base side support portion 13 to each other by the fixing tool 62. The connecting device using a leaf spring as an elastic member uses a leaf spring instead of the elastic sheet 61 and the plate material 60 of FIG. 4 to connect the leaf spring and the guide rod mounting body 14 to each other with a fixture 62, and This can be achieved by connecting the leaf spring and the base side support portion 13 to each other with a fixture 62. A leaf spring may be used in combination with the elastic sheet 61 using a leaf spring instead of the leaf material 60 of FIG. By combining two or more of the coupling device using the coil spring 20, the coupling device using the elastic sheet 61 and the plate material 60, and the coupling device using the plate spring, the guide rod mounting body 14 and the base side You may comprise the coupling device which couple | bonds the support part 13 mutually.

  Further, as shown in FIG. 5, a configuration including a support portion 70 made of a rigid body such as a steel plate connected to the front portion of the base 4 so as to extend vertically upward with respect to the extending direction of the base 4. The mounting plate 31 and the support portion 70 are bolted 73 in a state where an elastic sheet 71 as an elastic member is interposed between the mounting plate 31 attached to the rear portion of the guide rod 6 and the support portion 70. A connection device 75 for connecting the rear portion of the guide rod 6 and the support portion 70 to each other is formed by a structure connected by a fixture 72 such as a nut 74, and the connection device 75 maintains the guide rod 6 in a movable state. The configured configuration may be realized. That is, a structure corresponding to the hole 25 formed in the guide rod mounting body 14 described above; the communication hole 26; the hole 16 is provided on the upper portion of the support portion 70, and the elastic sheet 71 is mounted on the front surface of the mounting plate 31. A guide rod 6 having a mounting plate 31 and an elastic sheet 71 at the rear thereof is installed in a hole outside the figure corresponding to the hole 25, and a bolt through hole formed in the support unit 70, the elastic sheet 71 and the mounting plate 31. The mounting plate 31 and the support portion 70 are connected to each other by inserting the bolt 73 into 76 and fastening the nut 74 to the screw portion at the tip of the bolt 73. According to the above configuration, the same effect as in the best mode 1 can be obtained, and the support portion 70 can be configured by one support plate, and the support portion 70 can be configured by the guide rod mounting body 14 and the base side support portion 13. Therefore, the structure of the support portion 70 can be simplified, which is economically advantageous. In place of the elastic sheet 61 in FIG. 4 or the elastic sheet 71 in FIG. 5, an elastic washer or nut may be interposed.

  The elasticity of the elastic member of the coupling device used in the present invention is such that the guide rod 6 can be finely moved. That is, in a structure in which the guide rod 6 moves greatly even when a small force is applied to the guide rod 6, the force applied to the guide rod 6 from the rock drill 5 through the connecting member 8 during drilling by the rock drill 5. This is because, when the guide rod 6 moves, the guide rod 6 also moves (so as to be covered) in the preceding hole, and the drilling direction of the rock drill 5 becomes unstable. Therefore, the connecting device of the present invention means that the connecting rod is not connected so that the guide rod 6 does not move at all even when a force is applied to the guide rod 6.

  In each configuration described above, a through hole for inserting the guide rod 6, a through hole for inserting a bolt connecting the guide rod mounting body 14 and the base side support portion 13 to each other, the mounting plate 31 and the support portion 70, The through holes for inserting the bolts are connected to the guide rod 6 or the bolt with a diameter larger than the shaft diameter of the bolt (for example, about twice the shaft diameter), and the guide rod 6 is orthogonal to the direction along the guide rod 6. If the degree of fastening of the bolt and nut is adjusted so that it can be moved in the direction in which the guide rod 6 moves, the guide rod 6 moves along the guide rod 6 by the force applied to the guide rod 6 due to the collision between the preceding hole and the guide rod 6. Since it becomes easy to move in the direction orthogonal to the direction, the operation of inserting the guide rod 6 into the preceding hole can be facilitated.

  Further, in the structure of FIGS. 4 and 5, a structure that does not use an elastic member, that is, a structure in which the guide rod mounting body 14 and the base side support portion 13 are directly connected to each other by the plate material 60, In the structure in which the plates 31 are directly connected to each other, the bolts and nuts are adjusted to such an extent that the guide rod 6 can move in a direction perpendicular to the direction along the guide rod 6. A perforating apparatus having a configuration in which the guide rod 6 can move in a direction orthogonal to the direction along the guide rod 6 by a force applied to the guide rod 6 by the collision with the guide rod 6 may be used. Even in such a perforating device, the guide rod 6 moves in a direction perpendicular to the direction along the guide rod 6 due to the force applied to the guide rod 6 due to the collision between the preceding hole and the guide rod 6. This is within the scope of the present invention. However, in the case of the drilling device of this configuration, the guide rod 6 does not move so as to change the traveling direction, so that it is necessary to control the angle of the guide rod 6 by the arm 2a to some extent. Compared to a drilling device in which the guide rod 6 does not move at all even if a force is applied to the guide rod 6, the operation of inserting the guide rod 6 into the preceding hole can be facilitated.

The perspective view which shows the punching apparatus of this invention (best form). The disassembled perspective view which shows the punching apparatus of this invention (best form). Operation | movement explanatory drawing (best form) of the punching apparatus of this invention. The figure which shows the other perforation apparatus of this invention. The figure which shows the other perforation apparatus of this invention. The perspective view which shows the conventional punching apparatus.

Explanation of symbols

1 drilling device, 2 pilot, 3 drill section, 4 base, 5 rock drill,
6 guide rod, 7; 70 support part, 8 connecting member, 13 base side support part,
14 Guide rod mounting body, 15; 75 connecting device, 20 coil spring (elastic member),
21 Upper mounting portion, 22 Lower mounting portion, 60 Plate material, 61 Elastic sheet (elastic member).

Claims (6)

A base connected to the pilot, a rock drill provided on the base so as to be movable back and forth, a support provided at the front of the base, and a guide rod connected to the support and protruding forward And a connecting member for connecting the guide rod and the drilling portion of the rock drill to each other, wherein the connecting member is capable of sliding the drill portion back and forth in the direction along the axis of the guide rod. Is formed by a base side support portion attached to the front portion of the base, a guide rod attachment body attached to the rear portion of the guide rod, and a connecting device for connecting the base side support portion and the guide rod attachment body to each other. A perforating apparatus, wherein the guide rod is maintained in a movable state with respect to the base side support portion by the connecting device. The connecting device is formed by an elastic member having an upper mounting portion attached to the guide rod mounting body and a lower mounting portion attached to the base side support portion, and the upper mounting portion and the guide rod mounting body are connected to each other, 2. The guide rod is maintained in a movable state with respect to the base side support portion by the elasticity of the elastic member by connecting the lower mounting portion and the base side support portion to each other. The drilling device described.   The perforating apparatus according to claim 2, wherein the elastic member is a coil spring.   The perforating apparatus according to claim 2, wherein the elastic member is a leaf spring. The connecting device is formed of a plate material and an elastic member that connect the base side support portion and the guide rod mounting body to each other, and is at least between the plate material and the guide rod mounting body or between the plate material and the base side support portion. With the elastic member interposed between the plates, the plate member and the guide rod mounting body are connected to each other, and the plate member and the base side support portion are connected to each other. The perforating apparatus according to claim 1, wherein the guide rod is maintained in a movable state with respect to the base side support portion . A base connected to the pilot, a rock drill provided on the base so as to be movable back and forth, a support provided at the front of the base, and a guide rod connected to the support and protruding forward And a connecting member that connects the guide rod and the drill portion of the rock drill to each other, and the connecting member can slide the drill portion back and forth in the direction along the axis of the guide rod. A drilling device comprising a connecting device for connecting the rear portion and the support portion to each other, wherein the guide rod is maintained in a movable state with respect to the support portion by the connecting device.

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