Automatic positioning device and method for tunnel excavation blasting drilling

Abstract

The present invention discloses an automatic positioning device for tunnel excavation blasting drilling, comprising a drill rod, a frustum provided on the left side of the drill rod, the right side diameter of the frustum smaller than the left side diameter, the right side of the frustum fixedly connected to the left end of the drill rod, the left side of the frustum fixedly connected to a drilling rig connecting mechanism, a drilling length measuring mechanism installed on the drill rod and the frustum. The present invention designs an automatic positioning device for tunnel excavation blasting drilling and a method thereof, so that the depth to which the drill bit and the drill rod are inserted into the rock wall can be displayed through an observation hole, and the blast hole length can be known in real time through the observation hole, so that the drilling process can be completed in one go, saving time and effort.

Description

Technical Field

[0001] The present invention relates to the field of drilling devices, and in particular to an automatic positioning device for tunnel excavation blasting drilling and a method thereof. Background Art

[0002] Spodumene is a high-temperature hydrothermal deposit of the granitic-pegmatite period. During early orogenic movement, magma rich in rare metal elements intruded upward. Through crystallization and gasification, fluids rich in volatile components and rare metal compounds gathered at the top of the "magma chamber," forming pegmatite magma. This magma then filled the cracks in the surrounding rock and slowly crystallized under sustained high temperature and pressure. Spodumene has the following uses:

[0003] Lithium chemical industry: It is the main raw material for extracting lithium elements. Lithium is widely used in battery manufacturing, such as new energy vehicle batteries, mobile phone batteries, etc. With the rapid development of the new energy industry, the demand for lithium continues to grow.

[0004] Ceramics: Spodumene is added to ceramic bodies as a flux and is also an important component to ensure the formation of low thermal expansion crystals, which can make ceramics have low thermal expansion. It is widely used in kiln tools, refractory tableware, thermocouple protective sleeves, etc.; using spodumene in glazes can produce glazes with low expansion coefficients and improve the whiteness, glossiness, firing range and other properties of the glaze.

[0005] Glass field: It can be used to manufacture special glass, such as heat-resistant glass, optical glass, etc., and can improve the glass's thermal shock resistance, chemical stability, mechanical strength and other properties.

[0006] Metallurgical field: Spodumene can be used in the aluminum industry. When added to the aluminum reduction electrolytic cell, it can increase the conductivity of the molten pool, reduce the operating temperature and increase the output.

[0007] Other fields: It can also be used in enamel, lubricants, medicine and other industries. In addition, the brightly colored spodumene can be used to make bracelets, necklaces and other accessories.

[0008] The mining of spodumene is often carried out by blasting, that is, drilling a blasthole on the rock wall and then filling it with an appropriate amount of explosives to crush the ore and separate it from the rock wall. When drilling in this way, the length of the blasthole needs to be calculated based on the size of the explosives, the density of the rock mass, the tensile strength, etc.

[0009] For example, the patent publication number CN222670869U discloses a tunnel blasting positioning structure and blasting hole drilling equipment, including a frame, a transverse movement assembly, a longitudinal movement assembly and a drilling rig, the transverse movement assembly includes an adjustment seat, the adjustment seat is arranged on the top of the frame through a connecting piece, the longitudinal movement assembly includes a rack, a movable block and a gear, the rack is fixed above the adjustment seat, the movable block is slidably sleeved on the outside of the rack and the adjustment seat, a gear is rotatably arranged in the movable block, the gear is meshed with the rack, the rotating shaft of the gear extends out of the outside of the movable block and a handle is fixed, the drilling rig includes a motor and a drill bit, the motor is fixed above the movable block, the drill bit is connected to the motor by transmission, the entire equipment realizes the drilling operation of the drilling rig through the longitudinal movement assembly, and the longitudinal movement method adopts the handle to rotate the gear to move on the rack, which is conducive to judging the depth of the drilling rig drilling; the transverse movement assembly can move its position laterally on the frame, which is conducive to the lateral adjustment and positioning of the drilling rig when changing the blasting hole operation, thereby improving the drilling operation efficiency.

[0010] However, the above-mentioned drilling rig and similar drilling rigs are unable to synchronously measure the drilling depth during drilling. It is necessary to stop and measure continuously during drilling until the blasthole length reaches the standard, which makes the drilling process time-consuming and labor-intensive. Summary of the Invention

[0011] The purpose of the present invention is to provide a tunnel excavation blasting drilling automatic positioning device and method thereof to solve the above technical problems.

[0012] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0013] An automatic positioning device for tunnel excavation blasting drilling, comprising a drill rod, a frustum provided on the left side of the drill rod, the right side of the frustum having a smaller diameter than the left side, the right side of the frustum being fixedly connected to the left end of the drill rod, the left side of the frustum being fixedly connected to a drilling rig connection mechanism, and a drilling length measuring mechanism being installed on the drill rod and the frustum.

[0014] Preferably, a conical drill bit is provided on the right side of the drill rod, and the drill bit is fixedly connected to the right end of the drill rod.

[0015] Preferably, the drilling length measuring mechanism includes a first driving ring, the first driving ring is sleeved on the right end of the drill rod, the left end of the drill rod is sleeved with a second driving ring, a first spring is arranged between the second driving ring and the first driving ring, the first spring is sleeved on the drill rod, the left end of the first spring is fixed to the second driving ring, the right end of the first spring is fixed to the first driving ring, a driving rope is arranged on the left side of the second driving ring, the driving rope is spirally wound around the left end of the drill rod and the round table, the left end of the driving rope is connected to the metering assembly, a second spring is arranged on the left side of the driving rope, the second spring is sleeved on the round table, and the left end of the second spring is fixed to the drilling rig connecting mechanism.

[0016] Preferably, a protective disk is sleeved on the outer side of the first drive ring, and the protective disk is fixedly connected to the first drive ring.

[0017] Preferably, a plurality of pressure rods are provided on the outside of the left end of the drill rod and the outside of the cone, and the pressure rods are used to press the drive rope. The left end of the pressure rod is fixedly connected to the drilling rig connection mechanism, and the right end of the pressure rod passes through the second drive ring. A limit block is fixed to the right end of the pressure rod.

[0018] Preferably, a dovetail groove is provided at the top and bottom of the left end of the drill rod, a dovetail slider is slidably provided in the dovetail groove, the dovetail slider is located between the drive rope and the second drive ring, and the dovetail slider is fixedly connected to the right end of the drive rope.

[0019] Preferably, the metering assembly includes a transverse conduit, the left end of the transverse conduit is fixedly connected to the drilling rig connecting mechanism, a vertical conduit is fixedly provided on the left top of the transverse conduit, the vertical conduit is communicated with the transverse conduit, a guide rod is provided inside the transverse conduit, a scale is provided on the front side of the guide rod along the length direction of the guide rod, a third spring is provided on the right side of the guide rod, the left end of the third spring is fixedly connected to the right end of the guide rod, the right end of the third spring is fixedly connected to the right end of the transverse conduit, an observation hole is provided on the front side of the transverse conduit, the left end of the drive rope passes through the vertical conduit into the transverse conduit and is fixed to the left end of the guide rod.

[0020] Preferably, the drilling rig connection mechanism includes a connecting plate, and the right side of the connecting plate is fixedly connected to the left end of the frustum, the left end of the second spring, the left end of the pressure rod, and the left end of the transverse guide tube.

[0021] Preferably, the drilling rig connection mechanism further includes a driving outer tube, the right end of the driving outer tube is fixedly connected to the left side of the connecting plate, a driving inner tube is arranged inside the driving outer tube, and the left end of the driving inner tube is fixedly connected to the power output end of the drilling rig; a plurality of first curved plates are arranged at the left end of the driving inner tube, the first curved plates are arranged around the driving inner tube in an annular array, and the first curved plates are fixedly connected to the outer wall of the driving inner tube; a plurality of second curved plates are arranged at the right end of the driving inner tube, the second curved plates are arranged around the driving inner tube in an annular array, and the second curved plates are fixedly connected to the outer wall of the driving inner tube; A plurality of third curved plates are provided at the right end of the driving outer tube, and the third curved plates are arranged in a ring array around the driving outer tube, and the third curved plates are fixedly connected to the inner wall of the driving outer tube; an outer limiting ring is provided between the driving outer tube and the connecting plate, the left end of the outer limiting ring is fixedly connected to the right end of the driving outer tube, and the right end of the outer limiting ring is fixedly connected to the connecting plate, an inner cylinder is provided inside the outer limiting ring, the inner cylinder is fixedly connected to the connecting plate, and a plurality of balls are provided between the outer limiting ring and the inner cylinder; a left limiting ring is provided on the left end of the driving inner tube, and the left limiting ring is fixedly connected to the left end of the driving outer tube.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention designs an automatic positioning device and method for tunnel excavation blasting drilling, so that the depth of the drill bit and drill rod inserted into the rock wall can be displayed through the observation hole. The length of the blast hole can be known in real time through the observation hole, so that the drilling process can be completed in one go, saving time and effort.

[0024] 2. When the drill bit of the present invention is drilling obliquely upward, the drill bit cannot rotate, thereby preventing the drilling of an obliquely upward blasthole and preventing the explosive from slipping when filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of an automatic positioning device and method for tunnel excavation blasting drilling according to the present invention;

[0026] Figure 2 The present invention is a tunnel excavation blasting drilling automatic positioning device and method Figure 1 A magnified schematic diagram of part A;

[0027] Figure 3 This is a structural diagram of a tunnel excavation blasting drilling automatic positioning device and method and a drilling rig connection mechanism of the present invention;

[0028] Figure 4 The present invention is a tunnel excavation blasting drilling automatic positioning device and method Figure 3 An enlarged schematic diagram of part B;

[0029] Figure 5 This is a schematic diagram of the internal structure of a transverse guide tube of an automatic positioning device and method for tunnel excavation blasting drilling according to the present invention;

[0030] Figure 6 The working principle of the embodiment 3 of the automatic positioning device and method for tunnel excavation blasting drilling of the present invention is shown as follows: Figure 1 ;

[0031] Figure 7 The working principle of the embodiment 3 of the automatic positioning device and method for tunnel excavation blasting drilling of the present invention is shown as follows: Figure 2 ;

[0032] Figure numerals: 1. connecting plate; 2. second spring; 3. frustum; 4. driving rope; 5. pressure rod; 7. first spring; 8. drill rod; 9. protective plate; 10. drill bit; 11. horizontal guide tube; 12. observation hole; 13. vertical guide tube; 15. dovetail slide; 16. dovetail slider; 17. second driving ring; 18. limit block; 19. scale; 20. guide rod; 21. third spring; 22. third arc plate; 23. driving outer tube; 24. second arc plate; 25. driving inner tube; 26. first arc plate; 27. power output end; 28. inner cylinder; 29. ​​outer limit ring; 30. ball; 31. first driving ring; 32. left limit ring. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances. Example

[0036] like Figure 1-6 The figure shows an automatic positioning device for tunnel excavation blasting drilling. The device includes a drill rod 8, with a frustum 3 disposed on the left side of the drill rod 8. The diameter of the right side of the frustum 3 is smaller than that of the left side. The right side of the frustum 3 is fixedly connected to the left end of the drill rod 8, and the left side of the frustum 3 is fixedly connected to the drilling rig connection mechanism. A drill hole length measuring mechanism is mounted on the drill rod 8 and the frustum 3. A conical drill bit 10 is disposed on the right side of the drill rod 8 and is fixedly connected to the right end of the drill rod 8.

[0037] The device is connected to a drilling rig via a drilling rig connection mechanism, and the drilling rig drives the drill rod 8 and the drill bit 10 to rotate, and a blasthole is drilled on the rock wall using the drill rod 8 and the drill bit 10. Example

[0038] like Figure 1-6 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that: the drilling length measuring mechanism includes a first driving ring 31, the first driving ring 31 is sleeved on the right end of the drill rod 8, and the left end of the drill rod 8 is sleeved with a second driving ring 17, a first spring 7 is arranged between the second driving ring 17 and the first driving ring 31, the first spring 7 is sleeved on the drill rod 8, the left end of the first spring 7 is fixed to the second driving ring 17, the right end of the first spring 7 is fixed to the first driving ring 31, a driving rope 4 is arranged on the left side of the second driving ring 17, the driving rope 4 is spirally wound around the left end of the drill rod 8 and the round table 3, the left end of the driving rope 4 is connected to the measuring assembly, a second spring 2 is arranged on the left side of the drive rope 4, the second spring 2 is sleeved on the round table 3, and the left end of the second spring 2 is fixed to the drilling rig connecting mechanism.

[0039] A protective plate 9 is sleeved around the outside of the first drive ring 31 and is securely attached to the first drive ring 31. Multiple compression rods 5 are positioned outside the left end of the drill rod 8 and outside the truncated cone 3. These rods 5 are used to hold down the drive rope 4. The left end of the compression rod 5 is securely attached to the drilling rig's connection mechanism, while the right end of the compression rod 5 extends through the second drive ring 17. A stopper 18 is secured to the right end of the compression rod 5. Dovetail-shaped chutes 15 are defined at both the top and bottom of the left end of the drill rod 8. A dovetail-shaped slider 16 slides within these chutes, located between the drive rope 4 and the second drive ring 17 and securely attached to the right end of the drive rope 4.

[0040] The metering assembly includes a transverse conduit 11, the left end of which is fixedly connected to the drilling rig connection mechanism, a vertical conduit 13 is fixedly provided on the top left side of the transverse conduit 11, the vertical conduit 13 is communicated with the transverse conduit 11, a guide rod 20 is provided inside the transverse conduit 11, a scale 19 is provided on the front side of the guide rod 20 along the length direction of the guide rod 20, a third spring 21 is provided on the right side of the guide rod 20, the left end of the third spring 21 is fixedly connected to the right end of the guide rod 20, the right end of the third spring 21 is fixedly connected to the right end of the transverse conduit 11, an observation hole 12 is provided on the front side of the transverse conduit 11, the left end of the drive rope 4 passes through the vertical conduit 13 into the transverse conduit 11 and is fixedly connected to the left end of the guide rod 20.

[0041] The drill bit 10 and the drill rod 8 are continuously rotated and inserted into the rock wall to drill a blasthole. Since the protective plate 9 and the first drive ring 31 are stuck outside the blasthole, as the drill rod 8 continues to drill into the rock wall, the first drive ring 31 continuously compresses the first spring 7, so that the first spring 7 drives the second drive ring 17 to slide to the left along the pressure rod 5, so that the second drive ring 17 pushes the drive rope 4 to move left as a whole through the dovetail slider 16 to compress the second spring 2, pushing more of the drive rope 4 onto the frustum 3. Since the diameter of the right side of the frustum 3 is smaller than the diameter of the left side, in the process of the drive rope 4 moving to the frustum 3, more of the drive rope 4 needs to be pulled and wound around the frustum 3. Since the right end of the drive rope 4 is fixed by the dovetail slider 16, the left end of the drive rope 4 moves up and is wound around the frustum 3. When the left end of the drive rope 4 moves up, the guide rod 20 is pulled to move left synchronously, so that different scales move to the observation hole 12 for display;

[0042] The deeper the drill bit 10 and drill rod 8 are inserted into the rock wall, the longer the first spring 7 is compressed, so that the elastic force exerted by the first spring 7 on the second drive ring 17 and the drive rope 4 is greater, so that the drive rope 4 can continue to move left to compress the second spring 2, so that the left end of the drive rope 4 can continuously pull the guide rod 20 to the left, so that the value of the scale 19 displayed in the observation hole 12 increases synchronously with the increase in the insertion depth of the drill bit 10 and drill rod 8, so that the depth of the drill bit 10 and drill rod 8 inserted into the rock wall is displayed through the observation hole 12. Example

[0043] like Figure 1-6 As shown, while other parts are the same as those in Example 2, the difference between this embodiment and Example 2 is that the drilling rig connection mechanism includes a connecting plate 1, and the right side of the connecting plate 1 is fixedly connected to the left end of the cone 3, the left end of the second spring 2, the left end of the pressure rod 5, and the left end of the transverse guide tube 11.

[0044] The drilling rig connection mechanism also includes a driving outer tube 23, the right end of the driving outer tube 23 is fixedly connected to the left side of the connecting plate 1, a driving inner tube 25 is provided inside the driving outer tube 23, and the left end of the driving inner tube 25 is fixedly connected to the power output end 27 of the drilling rig; a plurality of first curved plates 26 are provided at the left end of the driving inner tube 25, and the first curved plates 26 are arranged in a ring array around the driving inner tube 25, and the first curved plates 26 are fixedly connected to the outer wall of the driving inner tube 25; a plurality of second curved plates 24 are provided at the right end of the driving inner tube 25, and the second curved plates 24 are arranged in a ring array around the driving inner tube 25, and the second curved plates 24 are fixedly connected to the outer wall of the driving inner tube 25; the driving outer tube 23 A plurality of third curved plates 22 are provided at the right end, and the third curved plates 22 are arranged in a ring array around the driving outer tube 23, and the third curved plates 22 are fixedly connected to the inner wall of the driving outer tube 23; an outer limiting ring 29 is provided between the driving outer tube 23 and the connecting plate 1, and the left end of the outer limiting ring 29 is fixedly connected to the right end of the driving outer tube 23, and the right end of the outer limiting ring 29 is fixedly connected to the connecting plate 1, an inner cylinder 28 is provided inside the outer limiting ring 29, and the inner cylinder 28 is fixedly connected to the connecting plate 1, and a plurality of balls 30 are provided between the outer limiting ring 29 and the inner cylinder 28; a left limiting ring 32 is sleeved on the left end of the driving inner tube 25, and the left limiting ring 32 is fixedly connected to the left end of the driving outer tube 23.

[0045] like Figure 6 As shown, when using a conventional drill, if the drill bit 10 is facing downward, a hole can be drilled as shown in FIG. Figure 6 The blasthole shown in FIG. 1 is a blasthole in which explosives are stuffed into the blasthole so that the explosives do not slip out of the blasthole; and when the drill bit 10 is facing upward, a blasthole as shown in FIG. Figure 7 In the blasthole shown, when explosives are filled into the blasthole, the explosives easily slip out of the blasthole;

[0046] For this device, when the drill bit 10 is facing downward, Figure 3 As shown, the driving inner tube 25 and the driving outer tube 23 are both higher on the left and lower on the right. At this time, the ball 30 slides between the inner cylinder 28 and the outer limit ring 29. When drilling, the power output end 27 of the drilling rig is pressed against the rock wall through this device, so that the driving inner tube 25 is inserted into the driving outer tube 23. As the power output end 27 drives the driving inner tube 25 to rotate, the second curved plates 24 on the driving inner tube 25 are staggered and inserted between the third curved plates 22, and the second curved plates 24 are pressed against the ball 30. At this time, the power output end 27 drives the third curved plate 22 to rotate through the driving inner tube 25 and the second curved plate 24 in turn. The third curved plate 22 drives the frustum 3, the drill rod 8, and the drill bit 10 to rotate through the driving outer tube 23, the outer limit ring 29, and the connecting plate 1 in turn, so that the drill rod 8 and the drill bit 10 drill into the rock mass and drill out as shown. Figure 6 The blast hole shown.

[0047] When the drill bit 10 is facing upwards, Figure 3On the contrary, the driving inner tube 25 and the driving outer tube 23 are lower on the left and higher on the right, and the balls 30 roll to the driving inner tube 25. After the second curved plates 24 on the driving inner tube 25 are staggered and inserted between the third curved plates 22, since there is no obstruction of the balls 30 between the inner cylinder 28 and the outer limit ring 29, the second curved plate 24 will continue to be inserted between the inner cylinder 28 and the outer limit ring 29, so that the second curved plate 24 and the third curved plate 22 are not in contact. At this time, when the second curved plate 24 rotates, it cannot drive the third curved plate 22 to rotate synchronously, thereby making the drill rod 8 and the drill bit 10 unable to rotate.

[0048] Therefore, whenever the drill bit 10 of the device is facing upward, the drill rod 8 and the drill bit 10 cannot rotate, thereby avoiding drilling out Figure 7 The drill hole shown caused the explosives to slip.

[0049] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning device for tunnel excavation blasting drilling, characterized by: It comprises a drill rod (8), a frustum (3) is provided on the left side of the drill rod (8), the diameter of the right side of the frustum (3) is smaller than the diameter of the left side, the right side of the frustum (3) is fixedly connected to the left end of the drill rod (8), the left side of the frustum (3) is fixedly connected to the drilling rig connection mechanism, and a drilling length measuring mechanism is installed on the drill rod (8) and the frustum (3); A conical drill bit (10) is provided on the right side of the drill rod (8), and the drill bit (10) is fixedly connected to the right end of the drill rod (8); The drilling length measuring mechanism comprises a first driving ring (31), the first driving ring (31) is sleeved on the right end of the drill rod (8), the left end of the drill rod (8) is sleeved with a second driving ring (17), a first spring (7) is arranged between the second driving ring (17) and the first driving ring (31), the first spring (7) is sleeved on the drill rod (8), the left end of the first spring (7) is fixedly connected to the second driving ring (17), the right end of the first spring (7) is fixedly connected to the first driving ring (31), a driving rope (4) is arranged on the left side of the second driving ring (17), the driving rope (4) is spirally wound around the left end of the drill rod (8) and the round table (3), the left end of the driving rope (4) is connected to the measuring component, a second spring (2) is arranged on the left side of the driving rope (4), the second spring (2) is sleeved on the round table (3), and the left end of the second spring (2) is fixedly connected to the drilling rig connecting mechanism; A protective disk (9) is sleeved on the outer side of the first drive ring (31), and the protective disk (9) is fixedly connected to the first drive ring (31); A plurality of pressure rods (5) are provided on the outside of the left end of the drill rod (8) and the outside of the truncated table (3), and the pressure rods (5) are used to press the drive rope (4). The left end of the pressure rod (5) is fixedly connected to the drilling rig connection mechanism, and the right end of the pressure rod (5) passes through the second drive ring (17). A limit block (18) is fixedly provided on the right end of the pressure rod (5); The top and bottom of the left end of the drill rod (8) are both provided with a dovetail chute (15), a dovetail slider (16) is slidably provided in the dovetail chute (15), the dovetail slider (16) is located between the drive rope (4) and the second drive ring (17), and the dovetail slider (16) is fixedly connected to the right end of the drive rope (4); The metering assembly comprises a transverse conduit (11), the left end of the transverse conduit (11) is fixedly connected to the drilling rig connection mechanism, a vertical conduit (13) is fixedly provided on the top of the left side of the transverse conduit (11), the vertical conduit (13) is communicated with the transverse conduit (11), a guide rod (20) is provided inside the transverse conduit (11), a scale (19) is provided on the front of the guide rod (20) along the length direction of the guide rod (20), a third spring (21) is provided on the right side of the guide rod (20), the left end of the third spring (21) is fixedly connected to the right end of the guide rod (20), and the right end of the third spring (21) is fixedly connected to the right end of the transverse conduit (11), an observation hole (12) is provided on the front of the transverse conduit (11), and the left end of the drive rope (4) passes through the vertical conduit (13) into the transverse conduit (11) and is fixedly connected to the left end of the guide rod (20).

2. The automatic positioning device for tunnel excavation blasting drilling according to claim 1, characterized in that: The drilling rig connection mechanism comprises a connection plate (1), the right side of which is fixedly connected to the left end of the truncated table (3), the left end of the second spring (2), the left end of the pressure rod (5), and the left end of the transverse guide tube (11).

3. The automatic positioning device for tunnel excavation blasting drilling according to claim 2, characterized in that: The drilling rig connection mechanism further includes a driving outer tube (23), the right end of the driving outer tube (23) being fixedly connected to the left side of the connecting plate (1), a driving inner tube (25) being provided inside the driving outer tube (23), and the left end of the driving inner tube (25) being fixedly connected to the power output end (27) of the drilling rig; A plurality of first arc-shaped plates (26) are provided at the left end of the driving inner tube (25), the first arc-shaped plates (26) being arranged in a circular array around the driving inner tube (25), and the first arc-shaped plates (26) being fixedly connected to the outer wall of the driving inner tube (25); A plurality of second arc-shaped plates (24) are provided at the right end of the driving inner tube (25), the second arc-shaped plates (24) are arranged in a circular array around the driving inner tube (25), and the second arc-shaped plates (24) are fixedly connected to the outer wall of the driving inner tube (25); A plurality of third curved plates (22) are provided at the right end of the driving outer tube (23), the third curved plates (22) are arranged in a ring array around the driving outer tube (23), and the third curved plates (22) are fixedly connected to the inner wall of the driving outer tube (23); An outer limiting ring (29) is provided between the driving outer tube (23) and the connecting plate (1), the left end of the outer limiting ring (29) is fixedly connected to the right end of the driving outer tube (23), the right end of the outer limiting ring (29) is fixedly connected to the connecting plate (1), an inner cylinder (28) is provided inside the outer limiting ring (29), the inner cylinder (28) is fixedly connected to the connecting plate (1), and a plurality of balls (30) are provided between the outer limiting ring (29) and the inner cylinder (28); A left limiting ring (32) is sleeved on the left end of the driving inner tube (25), and the left limiting ring (32) is fixedly connected to the left end of the driving outer tube (23).

4. The method for using the automatic positioning device for tunnel excavation blasting drilling according to claim 3 is characterized by: The device is connected to a drilling rig via a drilling rig connection mechanism, a drill rod (8) and a drill bit (10) are driven to rotate by the drilling rig, a blasthole is drilled on a rock wall using the drill rod (8) and the drill bit (10), and the depth of the drill bit (10) and the drill rod (8) inserted into the rock wall is displayed through an observation hole (12).

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