Blasting drilling device for tunnel precise blasting construction and using method of blasting drilling device

Abstract

The invention relates to the technical field of drilling equipment, in particular to a blasting drilling device for tunnel precise blasting construction and a using method thereof.The blasting drilling device comprises a mounting main body, a rotating mechanism is arranged on the mounting main body, a connecting assembly is arranged on the rotating mechanism, and a translation mechanism is arranged on the connecting assembly; a limiting assembly is further arranged on the mounting body, a limiting adjusting mechanism is arranged between the translation mechanism and the mounting body, and a drilling machine is fixedly connected to the translation mechanism. According to the drilling machine, through the arranged limiting adjusting assembly, in the process that the sliding plate drives the drilling machine to drill and complete resetting, a rack can be driven to move and be engaged with a gear ring, the gear ring is made to rotate, accordingly, a limiting stop lever is driven to rotate by a certain angle, and the rotated limiting stop lever serves as a position mark and can be used for controlling the rotating angle of the drilling machine; and accurate positioning of the drilling machine is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and in particular to a blasting drilling device for precise tunnel blasting construction and a use method thereof. Background Art

[0002] During the tunnel excavation process, when blasting excavation is carried out, it is necessary to first drill multiple blast holes on the blasting surface, and then place the explosive packs in each blast hole after configuring them according to the pre-designed blasting parameters, and then detonate them to complete the blasting construction. Nowadays, when blasting is carried out during the tunnel excavation process, measuring tools are usually used to determine the position of each blast hole, and then the blast holes are opened one by one in the surrounding rock by manual drilling rigs or drilling equipment.

[0003] Since the blasting holes at the upper end of the blasting surface are close to the top surface of the tunnel, when workers use a drill to open a blasthole, they not only need to raise it, but also need to lift the drill to drill, which is inconvenient to use. In addition, because the blast holes at the upper end of the blasting surface are arranged in an arc shape, it is not easy for existing drilling equipment to accurately position when opening a hole. Summary of the invention

[0004] The purpose of the present invention is to provide a blasting drilling device for precise tunnel blasting construction and a method of using the same, so as to solve the problem that the existing drilling equipment is difficult to accurately locate arc-shaped blast holes as mentioned in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: A blasting drilling device for precise tunnel blasting construction comprises an installation body, a rotating mechanism is arranged on the installation body, a connecting assembly is arranged on the rotating mechanism, a translation mechanism is arranged on the connecting assembly, a limit position assembly is also arranged on the installation body, a limit position adjustment mechanism is arranged between the translation mechanism and the installation body, and a drilling machine is fixedly connected to the translation mechanism.

[0005] Preferably, the rotating mechanism includes a mounting rod and a transmission rod, and the mounting rod and the transmission rod are rotationally connected to the mounting body in parallel, and the mounting body is symmetrically fixedly connected with two fixed brackets 1, and the fixed bracket 1 is rotatably connected with a rotating shaft, and the rotating shaft is fixedly connected with a staggered axis bevel gear 1 and a worm gear, and the mounting rod is symmetrically fixedly connected with two staggered axis bevel gears 2, and the staggered axis bevel gear 1 and the staggered axis bevel gear 2 on the same side are meshed, and the transmission rod is symmetrically fixedly connected with two worms, and the worm wheel on the same side is meshed with the worm, and the transmission rod is also fixedly connected with a rotating handle.

[0006] Preferably, the connection assembly comprises a connection bracket, two of the connection brackets are symmetrically fixedly connected to the mounting rod, and the ends of the two mounting rods are fixedly connected with mounting slides.

[0007] Preferably, the translation mechanism includes a sliding plate, which is slidably connected to the mounting slide, a protrusion is fixedly connected at the bottom of the sliding plate, a nut sleeve is fixedly connected to the protrusion, two fixed brackets 2 are symmetrically fixedly connected to the mounting slide, a screw rod is rotatably connected to the two fixed brackets 2, the screw rod is threadedly connected to the nut sleeve, a drive motor is fixedly connected to the mounting slide, and the screw rod is fixedly connected to the output shaft of the drive motor.

[0008] Preferably, the limit assembly includes a mounting ring, which is fixedly connected to the mounting body, the mounting ring is coaxial with the mounting rod, the mounting ring is rotatably connected to a gear ring, the gear ring is fixedly connected to a connecting block, both sides of the connecting block are rotatably connected to limit stop rods, the mounting rod is fixedly connected to a positioning block, and the limit stop rod on one side is in contact with the positioning block.

[0009] Preferably, the limit adjustment mechanism includes a fixed bracket three, two of the fixed brackets three are fixedly connected to the connecting bracket in parallel, the two fixed brackets three are slidably connected with a lifting rod, a retaining ring is provided on the lifting rod, a spring one is connected between the retaining ring and the fixed bracket three below, the upper end of the lifting rod is rotatably connected to one end of the connecting rod, the other end of the connecting rod is rotatably connected to a sliding block, the sliding block is slidably connected to the mounting slide, and the sliding block abuts against the protrusion.

[0010] Preferably, the lower end of the lifting rod is rotatably connected to a rotating block, the rotating block is provided with a through hole 1, and the lower end of the lifting rod is symmetrically provided with two through holes 2, and a locking pin is slidably inserted in the through hole 1 and the through hole 2 on one side, the rotating block is slidably connected to a mounting bracket, the mounting bracket is connected to a rack, a spring 2 is connected between the mounting bracket and the rotating block, two elastic telescopic guide rods are symmetrically fixedly connected on both sides of the mounting bracket, a fixed bracket 4 is fixedly connected to the connecting bracket, and two rectangular plates are symmetrically fixedly connected to the fixed bracket 4, the rectangular plates are provided with transverse slide grooves and parallelogram slide grooves, the transverse slide grooves and the parallelogram slide grooves intersect, one of the elastic telescopic guide rods is slidably connected in the parallelogram slide groove, and a check slope is provided at the lower end of the parallelogram slide groove.

[0011] Preferably, a threaded hole is formed on the mounting bracket, an adjusting screw is threadedly connected in the threaded hole, the rack is slidably connected to the mounting bracket, the rack is rotationally connected to the adjusting screw, and the rack meshes with the gear ring during the downward movement.

[0012] A method for using a blasting drilling device for precise tunnel blasting construction comprises the following steps: The installation body is placed so that the drill bit of the drilling machine is aligned with the position of one of the blasting holes distributed in an arc shape, and the driving motor is started. The driving motor drives the screw rod fixedly connected thereto to rotate, and the screw rod drives the sliding plate to slide along the installation slideway through the nut sleeve, and the sliding plate drives the drilling machine fixedly connected thereto to move, and the drilling machine is used to perform drilling. In this process, since the protrusion is also moved away with the sliding plate, the restriction on the sliding block is released, so that the lifting rod can move upward under the elastic force of the spring 1, driving the rack connected thereto to move upward, and since the elastic telescopic guide rod slides in the inner straight groove of the parallelogram slide groove, the rack will not mesh with the gear ring; After the drilling is completed, the driving motor is reversed, the sliding plate moves in the opposite direction and resets, the convex block resets with the sliding plate and pushes the sliding block to move, and the sliding block pushes the lifting rod to move downward through the connecting rod. At this time, the elastic telescopic guide rod slides in the straight groove on the inner side of the parallelogram slide groove, so that the rack will mesh with the gear ring, driving the gear ring to rotate a certain angle, and the limit stop rod connected to the gear ring also rotates a certain angle; Then, the handle is turned to rotate the rotating rod and the worm, the worm drives the worm gear meshing therewith to rotate, the worm gear drives the staggered axis bevel gear 1 to rotate through the rotating shaft, the staggered axis bevel gear 1 drives the installation rod to rotate through the staggered axis bevel gear 2, and the positioning block fixedly connected to the installation rod also rotates accordingly, when the positioning block rotates to contact the limit stopper again, it can stop, at this time, the drill head of the drilling machine is just aligned with the blasting hole position adjacent to the previous drilled hole; When the drilling machine needs to rotate in the opposite direction, first pull out the locking pin and rotate the rotating block 180 degrees, then insert the locking pin to fix the rotating block, and then remove the limit stop rod that was previously attached to the positioning block, and rotate the limit stop rod on the same side as the rack to make it attached to the positioning block. At this time, the rotation direction of the ring gear and the limit stop rod will also be opposite to the previous one, so that the drilling machine can be limited when it rotates in the opposite direction.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by means of the rotating mechanism, when the handle is rotated, the mounting rod and the connecting assembly will also rotate accordingly, so that the drilling machine can move along the trajectory of the arc-shaped blasting holes, making it convenient for the drill bit of the drilling machine to be aligned with the blasting holes.

[0014] 2. In the present invention, by setting a limit adjustment component, when the sliding plate drives the drilling machine to complete the reset, it can drive the rack to move and engage with the ring gear, so that the ring gear rotates, thereby driving the limit stop rod to rotate a certain angle. The rotated limit stop rod serves as a position mark, which can be used to control the rotation angle of the drilling machine and ensure the accurate positioning of the drilling machine.

[0015] 3. In the present invention, the direction of rotation of the gear ring can be controlled by changing the orientation of the rotating block, so that when the drilling machine rotates in two directions, there can be an automatically adjustable limit lever as a position mark to facilitate positioning. At the same time, the rotation angle of the limit lever can be changed by adjusting the screw, so that it can be adjusted according to the angle of the blasting hole in actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the rotating mechanism in the present invention; Figure 3 It is a structural schematic diagram of the connection component in the present invention; Figure 4 It is a structural schematic diagram of the translation mechanism in the present invention; Figure 5 It is a structural schematic diagram of the limiting component in the present invention; Figure 6 The structure diagram of the limit adjustment mechanism in the present invention is shown in FIG. Figure 1 ; Figure 7 The structure diagram of the limit adjustment mechanism in the present invention is shown in FIG. Figure 2 ; Figure 8 The structure diagram of the limit adjustment mechanism in the present invention is shown in FIG. Figure 3 .

[0017] In the figure: 1. Installation body; 2. Rotation mechanism; 201. Installation rod; 202. Transmission rod; 203. Fixed bracket 1; 204. Rotation shaft; 205. Staggered axis bevel gear 1; 206. Worm gear; 207. Staggered axis bevel gear 2; 208. Worm; 209. Rotation handle; 3. Connection assembly; 301. Connection bracket; 302. Installation slideway; 4. Translation mechanism; 401. Sliding plate; 402. Bump; 403. Nut sleeve; 404. Fixed bracket 2; 405. Screw; 406. Driving motor; 5. Limit assembly; 501. Installation ring; 502. Gear ring; 503. Connection block; 5 04. Limit stop rod; 505. Positioning block; 6. Limit adjustment mechanism; 601. Fixed bracket three; 602. Lifting rod; 603. Retaining ring; 604. Spring one; 605. Connecting rod; 606. Sliding stop block; 607. Rotating block; 608. Through hole one; 609. Through hole two; 610. Locking pin; 611. Mounting bracket; 612. Rack; 613. Spring two; 614. Elastic telescopic guide rod; 615. Fixed bracket four; 616. Rectangular plate; 617. Horizontal slide groove; 618. Parallelogram slide groove; 619. Check slope; 620. Threaded hole; 621. Adjusting screw; 7. Drilling machine. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 8 , the present invention provides a technical solution: A blasting drilling device for precise blasting construction in a tunnel comprises an installation body 1, on which a rotating mechanism 2 is arranged, on which a connecting assembly 3 is arranged, on which a translation mechanism 4 is arranged, on which a limit position assembly 5 is also arranged, between which a limit position adjustment mechanism 6 is arranged and the installation body 1, and on which a drilling machine 7 is fixedly connected.

[0020] In this embodiment, the rotating mechanism 2 includes a mounting rod 201 and a transmission rod 202, and the mounting rod 201 and the transmission rod 202 are connected to the mounting body 1 in parallel and rotationally, and the mounting body 1 is symmetrically fixedly connected with two fixed brackets 203, and the fixed bracket 203 is rotatably connected with a rotating shaft 204, and the rotating shaft 204 is fixedly connected with a staggered axis bevel gear 1 205 and a worm gear 206, and the mounting rod 201 is symmetrically fixedly connected with two staggered axis bevel gears 207, and the staggered axis bevel gear 1 205 and the staggered axis bevel gear 2 207 on the same side are meshed, and the transmission rod 202 is symmetrically fixedly connected with two worm gears 208, and the worm gear 206 on the same side is meshed with the worm gear 208, and the transmission rod 202 is also fixedly connected with a rotating handle 209.

[0021] In this embodiment, the transmission between the worm wheel 206 and the worm 208 is self-locking, so that after adjusting the position of the connecting component 3 by turning the handle 209, the position of the connecting component 3 will not change automatically. At the same time, the large transmission ratio between the worm wheel 206 and the worm 208 makes it possible to more accurately adjust the rotation angle of the mounting rod 201.

[0022] In this embodiment, the connection assembly 3 includes a connection bracket 301 , two of the connection brackets 301 are symmetrically fixedly connected to the mounting rod 201 , and the ends of the two mounting rods 201 are fixedly connected with mounting slideways 302 .

[0023] In this embodiment, the translation mechanism 4 includes a sliding plate 401, which is slidably connected to the mounting slide 302, a protrusion 402 is fixedly connected at the bottom of the sliding plate 401, a nut sleeve 403 is fixedly connected to the protrusion 402, two fixed brackets 404 are symmetrically fixedly connected to the mounting slide 302, a screw rod 405 is rotatably connected to the two fixed brackets 404, the screw rod 405 is threadedly connected to the nut sleeve 403, a drive motor 406 is fixedly connected to the mounting slide 302, and the screw rod 405 is fixedly connected to the output shaft of the drive motor 406.

[0024] In this embodiment, the limit assembly 5 includes a mounting ring 501, which is fixedly connected to the mounting body 1, and is coaxial with the mounting rod 201. A gear ring 502 is rotatably connected to the mounting ring 501, and a connecting block 503 is fixedly connected to the gear ring 502. Both sides of the connecting block 503 are rotatably connected to limit stop rods 504, and a positioning block 505 is fixedly connected to the mounting rod 201, and the limit stop rod 504 on one side is in contact with the positioning block 505.

[0025] In this embodiment, the limit adjustment mechanism 6 includes a fixed bracket three 601, two of the fixed bracket three 601 are fixedly connected to the connecting bracket 301 in parallel, and the two fixed bracket three 601 are slidably connected with a lifting rod 602, and a retaining ring 603 is provided on the lifting rod 602, and a spring 604 is connected between the retaining ring 603 and the fixed bracket three 601 below, the upper end of the lifting rod 602 is rotatably connected to one end of the connecting rod 605, and the other end of the connecting rod 605 is rotatably connected to a sliding block 606, and the sliding block 606 is slidably connected to the mounting slide 302, and the sliding block 606 abuts against the protrusion 402.

[0026] In this embodiment, the lower end of the lifting rod 602 is rotatably connected to a rotating block 607, and a through hole 1 608 is opened on the rotating block 607. The lower end of the lifting rod 602 is symmetrically opened with two through holes 2 609. A locking pin 610 is slidably inserted in the through hole 1 608 and the through hole 2 609 on one side. A mounting bracket 611 is slidably connected to the rotating block 607, and a rack 612 is connected to the mounting bracket 611. A spring 2 613 is connected between the mounting bracket 611 and the rotating block 607. Two elastic telescopic guide rods 614 are fixedly connected symmetrically on the side, and a fixed bracket four 615 is fixedly connected to the connecting bracket 301. Two rectangular plates 616 are symmetrically fixedly connected to the fixed bracket four 615. A transverse slide groove 617 and a parallelogram slide groove 618 are opened on the rectangular plate 616. The transverse slide groove 617 and the parallelogram slide groove 618 intersect. One of the elastic telescopic guide rods 614 is slidably connected in the parallelogram slide groove 618, and a check slope 619 is provided at the lower end of the parallelogram slide groove 618.

[0027] In this embodiment, when the mounting bracket 611 is rotated and switched, the setting of the transverse sliding groove 617 ensures that the elastic telescopic guide rod 614 will not be blocked by the rectangular plate 616 when entering the parallelogram sliding groove 618 .

[0028] In this embodiment, a threaded hole 620 is opened on the mounting bracket 611, and an adjusting screw 621 is threadedly connected in the threaded hole 620. The rack 612 is slidingly connected to the mounting bracket 611, and the rack 612 is rotationally connected to the adjusting screw 621. The rack 612 will engage with the gear ring 502 during the downward movement.

[0029] In this embodiment, by rotating the adjusting screw 621, the rack 612 can be driven to move up and down. Since the downward movement distance of the connecting bracket 301 is fixed, the position of the rack 612 can be adjusted to control the length of the rack 612 meshing with the gear ring 502, thereby adjusting the angle of a single rotation of the limit stop rod 504 to adapt to blasting holes distributed at different angles.

[0030] A method for using a blasting drilling device for precise tunnel blasting construction comprises the following steps: The installation body 1 is placed so that the drill bit of the drilling machine 7 is aligned with the position of one of the blasting holes distributed in the arc shape, and the driving motor 406 is started. The driving motor 406 drives the screw rod 405 fixedly connected thereto to rotate, and the screw rod 405 drives the sliding plate 401 to slide along the installation slideway 302 through the nut sleeve 403, and the sliding plate 401 drives the drilling machine 7 fixedly connected thereto to move, and the drilling machine 7 is used to perform drilling. In this process, since the protrusion 402 is also moved away with the sliding plate 401, the restriction on the sliding block 606 is released, so that the lifting rod 602 can move upward under the elastic force of the spring 1 604, driving the rack 612 connected thereto to move upward, and since the elastic telescopic guide rod 614 slides in the inner straight groove of the parallelogram slide groove 618, the rack 612 will not mesh with the gear ring 502; After the drilling is completed, the driving motor 406 is reversed, the sliding plate 401 moves in the opposite direction and resets, the protrusion 402 resets with the sliding plate 401 and pushes the sliding block 606 to move, and the sliding block 606 pushes the lifting rod 602 to move downward through the connecting rod 605. At this time, the elastic telescopic guide rod 614 slides in the straight groove on the inner side of the parallelogram slide groove 618, so that the rack 612 will mesh with the gear ring 502, driving the gear ring 502 to rotate a certain angle, and the limit stop rod 504 connected to the gear ring 502 also rotates a certain angle; Then, the handle 209 is turned to rotate the rotating rod and the worm 208, and the worm 208 drives the worm wheel 206 meshing therewith to rotate, and the worm wheel 206 drives the staggered axis bevel gear 1 205 to rotate through the rotating shaft 204, and the staggered axis bevel gear 1 205 drives the installation rod 201 to rotate through the staggered axis bevel gear 207, and the positioning block 505 fixedly connected to the installation rod 201 also rotates accordingly, and when the positioning block 505 rotates to contact the limit stopper 504 again, it can stop, and at this time, the drill bit of the drilling machine 7 is just aligned with the blasting hole position adjacent to the previous drilled hole; When the drilling machine 7 needs to rotate in the opposite direction, first pull out the locking pin 610 and rotate the rotating block 607 180 degrees, then insert the locking pin 610 to fix the rotating block 607, and then remove the limit stop rod 504 that was previously in contact with the positioning block 505, and rotate the limit stop rod 504 on the same side as the rack 612 to make it in contact with the positioning block 505. At this time, the rotation direction of the ring gear 502 and the limit stop rod 504 will also be opposite to that before, so that the drilling machine 7 can be limited when it rotates in the opposite direction.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blasting drilling device for precise tunnel blasting construction, comprising a mounting body (1), characterized in that: The installation body (1) is provided with a rotating mechanism (2), the rotating mechanism (2) is provided with a connecting assembly (3), the connecting assembly (3) is provided with a translation mechanism (4), the installation body (1) is also provided with a limit assembly (5), a limit adjustment mechanism (6) is provided between the translation mechanism (4) and the installation body (1), and a drilling machine (7) is fixedly connected to the translation mechanism (4).

2. The blasting drilling device for precise tunnel blasting construction according to claim 1, characterized in that: The rotating mechanism (2) comprises a mounting rod (201) and a transmission rod (202); the mounting rod (201) and the transmission rod (202) are rotatably connected to the mounting body (1); two fixed brackets (203) are symmetrically fixedly connected to the mounting body (1); a rotating shaft (204) is rotatably connected to the fixed bracket (203); a staggered axis bevel gear (205) and a worm gear (206) are fixedly connected to the rotating shaft (204); two staggered axis bevel gears (207) are symmetrically fixedly connected to the mounting rod (201); the staggered axis bevel gears (205) and the staggered axis bevel gears (207) on the same side are meshed; two worm gears (208) are symmetrically fixedly connected to the transmission rod (202); the worm gears (206) and the worm gears (208) on the same side are meshed; and a rotating handle (209) is also fixedly connected to the transmission rod (202).

3. The blasting drilling device for precise tunnel blasting construction according to claim 2, characterized in that: The connection assembly (3) comprises a connection bracket (301), two of the connection brackets (301) are symmetrically fixedly connected to the mounting rod (201), and the ends of the two mounting rods (201) are fixedly connected to the mounting slideways (302).

4. The blasting drilling device for precise tunnel blasting construction according to claim 3, characterized in that: The translation mechanism (4) comprises a sliding plate (401), the sliding plate (401) is slidably connected to the installation slideway (302), a protrusion (402) is fixedly connected below the sliding plate (401), a nut sleeve (403) is fixedly connected to the protrusion (402), two fixed brackets (404) are symmetrically fixedly connected to the installation slideway (302), the two fixed brackets (404) are rotatably connected to a screw rod (405), the screw rod (405) is threadedly connected to the nut sleeve (403), a driving motor (406) is fixedly connected to the installation slideway (302), and the screw rod (405) is fixedly connected to the output shaft of the driving motor (406).

5. The blasting drilling device for precise tunnel blasting construction according to claim 4, characterized in that: The limit assembly (5) comprises a mounting ring (501), the mounting ring (501) being fixedly connected to the mounting body (1), the mounting ring (501) being coaxial with the mounting rod (201), the mounting ring (501) being rotatably connected to a gear ring (502), the gear ring (502) being fixedly connected to a connecting block (503), both sides of the connecting block (503) being rotatably connected to limit stop rods (504), the mounting rod (201) being fixedly connected to a positioning block (505), and the limit stop rod (504) on one side being in contact with the positioning block (505).

6. The blasting drilling device for precise tunnel blasting construction according to claim 5, characterized in that: The limit adjustment mechanism (6) comprises a fixed bracket three (601), two of the fixed bracket three (601) are fixedly connected to the connecting bracket (301) in parallel, and a lifting rod (602) is slidably connected to the two fixed bracket three (601), and a retaining ring (603) is provided on the lifting rod (602), and a spring one (604) is connected between the retaining ring (603) and the fixed bracket three (601) below, and the upper end of the lifting rod (602) is rotatably connected to one end of the connecting rod (605), and the other end of the connecting rod (605) is rotatably connected to a sliding block (606), and the sliding block (606) is slidably connected to the installation slide (302), and the sliding block (606) abuts against the protrusion (402); The lower end of the lifting rod (602) is rotatably connected to a rotating block (607), and the rotating block (607) is provided with a through hole 1 (608). The lower end of the lifting rod (602) is symmetrically provided with two through holes 2 (609), and a locking pin (610) is slidably inserted in the through hole 1 (608) and the through hole 2 (609) on one side. The rotating block (607) is slidably connected to a mounting bracket (611), and the mounting bracket (611) is connected to a rack (612). A spring 2 (613) is connected between the mounting bracket (611) and the rotating block (607), and both sides of the mounting bracket (611) are provided with springs. Two elastic telescopic guide rods (614) are symmetrically fixedly connected, a fixed bracket four (615) is fixedly connected to the connecting bracket (301), and two rectangular plates (616) are symmetrically fixedly connected to the fixed bracket four (615), and a transverse slide groove (617) and a parallelogram slide groove (618) are opened on the rectangular plate (616), and the transverse slide groove (617) and the parallelogram slide groove (618) intersect, and one of the elastic telescopic guide rods (614) is slidably connected in the parallelogram slide groove (618), and a non-return slope (619) is provided at the lower end of the parallelogram slide groove (618).

7. The blasting drilling device for precise tunnel blasting construction according to claim 6, characterized in that: A threaded hole (620) is formed on the mounting bracket (611), an adjusting screw (621) is threadedly connected in the threaded hole (620), the rack (612) is slidably connected to the mounting bracket (611), the rack (612) is rotationally connected to the adjusting screw (621), and the rack (612) meshes with the gear ring (502) during the downward movement.

8. The method for using the blasting drilling device for precise tunnel blasting construction according to any one of claims 1 to 7, characterized in that: The steps include: The installation body (1) is placed so that the drill bit of the drilling machine (7) is aligned with the position of one of the plurality of arc-shaped blasting holes, and the driving motor (406) is started. The driving motor (406) drives the screw rod (405) fixedly connected thereto to rotate, and the screw rod (405) drives the sliding plate (401) to slide along the installation slideway (302) through the nut sleeve (403). The sliding plate (401) drives the drilling machine (7) fixedly connected thereto to move, and the drilling machine (7) is driven by the driving motor (406). (7) Punching is performed. During this process, since the protrusion (402) is also moved away with the sliding plate (401), the restriction on the sliding block (606) is released, so that the lifting rod (602) can move upward under the elastic force of the spring 1 (604), driving the rack (612) connected thereto to move upward. Since the elastic telescopic guide rod (614) slides in the inner straight groove of the parallelogram slide groove (618), the rack (612) will not mesh with the gear ring (502); After the drilling is completed, the driving motor (406) is reversed, the sliding plate (401) moves in the opposite direction to reset, the protrusion (402) resets with the sliding plate (401) and pushes the sliding block (606) to move, and the sliding block (606) pushes the lifting rod (602) to move downward through the connecting rod (605). At this time, the elastic telescopic guide rod (614) slides in the straight groove on the inner side of the parallelogram slide groove (618), so that the rack (612) will mesh with the gear ring (502), driving the gear ring (502) to rotate a certain angle, and the limit stop rod (504) connected to the gear ring (502) also rotates a certain angle; Then, the handle (209) is turned to rotate the rotating rod and the worm (208), the worm (208) drives the worm wheel (206) meshing therewith to rotate, the worm wheel (206) drives the staggered axis bevel gear 1 (205) to rotate through the rotating shaft (204), the staggered axis bevel gear 1 (205) drives the installation rod (201) to rotate through the staggered axis bevel gear 2 (207), and the positioning block (505) fixedly connected to the installation rod (201) also rotates accordingly. When the positioning block (505) rotates to abut against the limit stopper (504) again, the positioning block (505) stops, and at this time, the drill bit of the drilling machine (7) is just aligned with the blasting hole position adjacent to the previously drilled hole; When the drilling machine (7) needs to rotate in the reverse direction, the locking pin (610) is first pulled out and the rotating block (607) is rotated 180 degrees, and then the locking pin (610) is inserted to fix the rotating block (607), and then the limit stopper (504) previously in contact with the positioning block (505) is removed, and the limit stopper (504) on the same side as the rack (612) is rotated to make it in contact with the positioning block (505). At this time, the rotation direction of the ring gear (502) and the limit stopper (504) is also opposite to that before, so that the drilling machine (7) can be limited when it rotates in the reverse direction.

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