A blasting hole auxiliary positioning device for mine exploitation

Abstract

The application discloses a kind of mine exploitation with blasting hole auxiliary positioning device, specifically relates to laser positioning technical field, including laser positioning assembly, angle control machine component and light spot receiving assembly, laser positioning assembly includes laser emitter and laser range finder, laser emitter is used to emit laser beam, and form light spot on working face, laser range finder is used to measure the distance parameter of light spot to laser positioning assembly, light spot receiving assembly includes light spot receiving plate and identification component, and positioning reference hole is arranged in the middle of identification component.The application can quickly and effectively find error problems by using laser range finder to verify distance, at the same time, light spot is corrected using light spot receiving assembly, so as to effectively improve the positioning accuracy of light spot, further reduce the influence of blasting hole on blasting effect, at the same time, the above positioning scheme does not need artificial measurement positioning one by one, and can effectively improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of laser positioning technology, and more specifically, to a blast hole-assisted positioning device for mining operations. Background Technology

[0002] Blasting technology in mining is one of the key links to improve mining efficiency and reduce production costs. Before blasting, a geological survey is required to understand the physical and mechanical properties of the rocks in the mining area (such as hardness and strength) and the geological structure characteristics. Based on the specific conditions of the ore body, appropriate blasting parameters such as borehole diameter, hole depth, hole spacing, and row spacing are selected.

[0003] After determining the location of the blasting holes, a professional drilling rig is used to drill the holes, and then the explosives are loaded. In addition to the proper control of the amount of explosives, the drilling accuracy also plays a crucial role in the blasting effect.

[0004] Traditionally, blasting hole location involves measuring and marking each manhole individually. In current technology, to improve efficiency, a 3D model of the blasting work surface is selected. Then, based on blasting simulation calculations, the 3D coordinates of each blasting hole are determined. Using laser equipment set at standard points in the actual site, the laser beam is emitted and controlled. According to the 3D coordinate parameters of each point, the direction and angle of the laser beam are controlled to find its projected spot on the work surface, thus determining the location of the blasting hole.

[0005] However, in actual use, the simulation of the working surface is basically assumed to be a planar state. But in real-world scenarios, some areas of the working surface will form pits or protrusions. In this case, since the laser beam is tilted, the actual projection point of the laser spot will have an error compared with the theoretical projection point. When the blasting accuracy requirement is not high, the above error can be ignored. However, for scenarios with high blasting accuracy requirements, especially when the distance from the standard point is relatively far, or when the pits or protrusions are relatively large, the above error is relatively large, affecting the accurate control of the actual blasting effect. Summary of the Invention

[0006] The present invention provides a blasting hole auxiliary positioning device for mining operations. The problem to be solved is that when pits or protrusions are formed in some areas of the working face, the actual projection point of the laser spot will have an error compared with the theoretical projection point because the laser beam is tilted. This error is relatively large, especially when the distance from the standard point is relatively far or the pits or protrusions are relatively large, which affects the accurate control of the actual blasting effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a blasting hole auxiliary positioning device for mining, comprising a laser positioning component, an angle control component, and a spot receiving component. The laser positioning component includes a laser emitter and a laser rangefinder, and the angle control component is used to control the laser positioning component to rotate along the X-axis and Z-axis.

[0008] The laser emitter is used to emit a laser beam and form a light spot on the working surface, and the laser rangefinder is used to measure the distance parameters from the light spot to the laser positioning component;

[0009] The light spot receiving assembly includes a light spot receiving plate and an marking assembly. The marking assembly has a positioning reference hole in the middle. The light spot receiving plate is used to receive the light spot above the pit, and the marking assembly is used to pass through the positioning reference hole and fall into the pit for positioning and marking.

[0010] In a preferred embodiment, the angle control assembly includes a support assembly, a Z-axis rotation adjuster, and an X-axis rotation adjuster. The Z-axis rotation adjuster is rotatably mounted on the support assembly along the Z-axis direction, and the X-axis rotation adjuster is rotatably mounted on the Z-axis rotation adjuster along the X-axis direction. The laser positioning assembly is fixedly mounted on the X-axis rotation adjuster. The Z-axis rotation adjuster is used to drive the laser positioning assembly to rotate along the Z-axis direction, and the X-axis rotation adjuster is used to drive the laser positioning assembly to rotate along the X-axis direction.

[0011] In a preferred embodiment, the marking component includes marking pins and marking pigment, wherein the marking pins are cylindrical pin structures and the marking pigment is a colored powder material.

[0012] In a preferred embodiment, multiple sets of control blades are provided on the light spot receiving plate at the corresponding positioning reference hole. The control blades are movably positioned above the positioning reference hole. The control blades close or move away from the positioning reference hole to control the closure of the positioning reference hole and control the size of the effective aperture of the positioning reference hole.

[0013] In a preferred embodiment, a control turntable is provided above the control blade, a guide ring is fixedly installed in the spot receiving plate, the guide ring is provided with a rotation guide groove, and the control turntable is provided with a slider structure that is slidably installed in the rotation guide groove, thereby enabling the control turntable to rotate relative to the guide ring. One end of the control blade is rotatably installed on the control turntable, and a connecting rod is also rotatably installed on the control blade. The end of the connecting rod away from the control blade is rotatably connected to the guide ring.

[0014] In a preferred embodiment, a support frame is provided around the light spot receiving plate, the light spot receiving plate is slidably mounted on the support frame, and support columns are provided around the support frame to support the light spot receiving plate.

[0015] In a preferred embodiment, the support frame is provided with a movable groove, the light spot receiving plate is provided with a limiting nail, the limiting nail is slidably disposed in the movable groove, and a damping structure is provided between the light spot receiving plate and the support frame.

[0016] In a preferred embodiment, the support column is a sliding rod structure, which is slidably installed in the support frame. At least three sets of sliding rod structures are provided. A buffer elastic element is provided between the sliding rod structure and the support frame, and a damping structure is provided between the sliding rod structure and the support frame.

[0017] In a preferred embodiment, the support column is an automatic telescopic rod, and at least three sets of automatic telescopic rods are provided. An attitude sensor assembly is provided on the light spot receiving plate, and the attitude sensor assembly includes a horizontal tilt sensor and a direction sensor.

[0018] Two sets of rectangular frames are slidably arranged below the light spot receiving plate. The overlapping area of ​​the two sets of rectangular frames forms a restriction area for restricting the marking nails. The sliding directions of the two sets of rectangular frames are perpendicular to each other, and the movement of the two sets of rectangular frames is controlled by a set of motion drivers.

[0019] The beneficial effects of this invention are as follows: This invention uses a laser rangefinder for distance verification. When the laser rangefinder detects an error in the distance parameter between the light spot and the laser positioning component, it indicates that an error has occurred in the light spot at that location, enabling rapid and effective detection of errors. Simultaneously, a light spot receiving component is used for light spot correction. A light spot receiving plate is brought close to the light spot to receive it until the light spot distance value meets the error margin range of the theoretical distance value. Then, the laser rangefinder is slowly moved to move the light spot to the positioning reference hole. At this point, the positioning reference hole can perform auxiliary positioning and complete the light spot correction, thereby effectively improving the positioning accuracy of the light spot and further reducing the impact of the blasting hole on the blasting effect. Furthermore, the above positioning scheme eliminates the need for manual measurement and positioning of each spot individually, effectively improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the laser positioning component of the present invention.

[0021] Figure 2 This is a schematic diagram of the composition and structure of the laser positioning component of the present invention.

[0022] Figure 3 This is a state diagram of the application of the present invention to the positioning of blasting holes on the plane of an open-pit mine bench blasting step.

[0023] Figure 4 This is a state diagram of the application of the present invention to the positioning of blasting holes on the tunnel face during tunnel excavation.

[0024] Figure 5This is a diagram showing the position of the laser beam of the present invention when it falls on an almost flat working surface.

[0025] Figure 6 This is a diagram showing the position of the laser beam when it falls into the groove on the working surface.

[0026] Figure 7 This is a schematic diagram of the structure of the light spot receiving component of the present invention.

[0027] Figure 8 This is a state diagram of the present invention when using a spot receiving plate to correct the spot in the area above a small pit.

[0028] Figure 9 This is a schematic diagram of the structure of the present invention when using an adjustable positioning reference hole scheme.

[0029] Figure 10 This is a diagram showing the state when the reference hole is fully open when the adjustable positioning reference hole scheme is used in this invention.

[0030] Figure 11 This is a schematic diagram of the composition of each control blade in this invention.

[0031] Figure 12 This is a state diagram of each control blade of the present invention when it is open.

[0032] Figure 13 This is a state diagram of the positioning and marking process after spot correction when using the adjustable positioning reference hole scheme of the present invention.

[0033] Figure 14 This is a schematic diagram of the improved light spot receiving component based on the large pit in this invention.

[0034] Figure 15 For the present invention Figure 14 Enlarged view of the structure of part A.

[0035] Figure 16 This is a top view of the improved light spot receiving plate according to the present invention.

[0036] Figure 17 A schematic diagram of an improved scheme for an automatically controlled light spot receiving component provided by the present invention.

[0037] Figure 18 This is a schematic diagram showing the cooperation between the two sets of rectangular frames and the positioning top in this invention.

[0038] The attached figures are labeled as follows: 1. Laser positioning assembly; 11. Laser emitter; 111. Laser beam; 112. Laser spot; 12. Laser rangefinder; 13. Laser lofting device; 2. Angle control assembly; 21. Support assembly; 22. Z-axis rotation adjuster; 23. X-axis rotation adjuster; 3. Laser spot receiving assembly; 31. Laser spot receiving plate; 311. Guide ring; 312. Rotation guide groove; 313. Restriction pin; 32. Marking assembly; 321. Marking pin; 322. Marking pigment; 33. Positioning reference hole; 331. Control blade; 332. Control turntable; 333. Connecting rod; 34. Support frame; 341. Support column; 3411. Sliding rod structure; 3412. Automatic telescopic rod; 342. Movable groove; 35. Level; 36. Rectangular frame; 361. Motion driver; 37. Attitude sensor assembly. Detailed Implementation

[0039] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0040] Refer to the instruction manual appendix Figures 1 to 18 A blasting hole auxiliary positioning device for mining includes a laser positioning component 1 and an angle control component 2. The laser positioning component 1 includes a laser emitter 11 and a laser rangefinder 12. The angle control component 2 includes a support assembly 21 (tripod), a Z-axis rotation adjuster 22, and an X-axis rotation adjuster 23. The Z-axis rotation adjuster 22 is rotatably mounted on the support assembly 21 along the Z-axis direction, and the X-axis rotation adjuster 23 is rotatably mounted on the Z-axis rotation adjuster 22 along the X-axis direction. The laser positioning component 1 is fixedly mounted on the X-axis rotation adjuster 23. The Z-axis rotation adjuster 22 is used to drive the laser positioning component 1 to rotate along the Z-axis direction, and the X-axis rotation adjuster 23 is used to drive the laser positioning component 1 to rotate along the X-axis direction. Both are commonly used automatic rotation drive devices, so the specific structure will not be explained in detail in this embodiment.

[0041] Refer to the instruction manual appendix Figure 3 and Figure 4In actual use, according to the pre-calculated and designed, the support assembly 21 is placed at the set standard point, so that the laser positioning assembly 1 is at the fixed standard three-dimensional coordinate point. The laser emitter 11 is controlled to emit a laser beam 111, so that the laser beam 111 is projected onto the working surface to form a light spot 112. Since the position of the blast hole and the position of the laser positioning assembly 1 are relatively fixed, the tilt angle of the corresponding laser emitter 11 is also relatively fixed, and the effective length of the laser emitter 11 is also relatively fixed (that is, the distance from the light spot 112 to the laser positioning assembly 1 is also relatively fixed). Therefore, according to the pre-calculated and set actual position of each blast hole, the tilt parameters (rotation parameters of the X-axis and Y-axis) of the laser positioning assembly 1 corresponding to the blast hole position are calculated. The angle control assembly 2 drives the laser positioning assembly 1 to generate the rotation of the corresponding parameters. At this time, the fixed light spot 112 is the actual position of the blast hole, thus forming the auxiliary positioning of the blast hole.

[0042] When the working surface is relatively flat, refer to the instruction manual appendix. Figure 5 At this point, the position of the light spot 112 coincides with the theoretical working surface, therefore, the position of the light spot 112 is relatively accurate. The distance parameter between the light spot 112 and the laser positioning component 1 is measured using the laser rangefinder 12. This distance parameter also relatively matches the theoretical parameter calculated in the pre-design. However, referring to the appendix of the instruction manual... Figure 6 When there are pits on the working surface, the pits deviate downwards relative to the theoretical working surface. Since the laser beam 111 is angled, the actual position of the light spot 112 will deviate to the side of the pit, resulting in a deviation from the theoretical position. This deviation is especially pronounced when the pit is larger, the distance to the laser positioning component 1 is greater, and the tilt of the laser emitter 11 is higher. Therefore, by setting the laser rangefinder 12 and detecting the distance parameter between the light spot 112 and the laser positioning component 1, it will be found that this parameter is greater than the theoretical parameter. At this point, it can be determined that the light spot 112 at this location has an error (if there is a protrusion, it will also cause the above error). When marking, the staff can promptly find the error and deal with it in time to avoid mispositioning of the blasting hole and causing irreparable damage.

[0043] It should be noted that, since a certain margin of error is reserved for each blasting hole during actual blasting, a certain margin of error can also be reserved for the detection distance value of the laser rangefinder 12 during actual positioning. Within this margin, normal marking is performed without alarm processing. When the above error is too large and exceeds the margin of error, alarm processing will be performed.

[0044] In the above scheme, if a protruding structure is encountered, the protrusion can be leveled using a tool to correct the light spot, thereby ensuring the light spot falls on the theoretical working surface before marking. However, for some pits, backfilling is required, but the amount of backfill material is difficult to control and relatively troublesome. Therefore, when encountering errors in blast hole positioning, the angle control machine component 2 provided in this embodiment can also be used for light spot correction. For details, please refer to the appendix of the instruction manual. Figure 7 and Figure 8 The blast hole auxiliary positioning device also includes a spot receiving component 3, which includes a spot receiving plate 31 and a marking component 32. The marking component 32 has a positioning reference hole 33 in the middle. When actual positioning is performed, if the laser rangefinder 12 detects that the actual distance of the spot 112 does not match the theoretical distance, and the staff finds that there is a pit in the actual situation, the spot receiving plate 31 is used to receive the spot 112. At the same time, the laser rangefinder 12 detects the distance value of the spot 112 and adjusts the position of the laser rangefinder 12 until the distance value meets the error margin range of the theoretical distance value. Then, the laser rangefinder 12 is slowly moved to move the spot 112 to the positioning reference hole 33. At this time, the positioning reference hole 33 can perform auxiliary positioning and complete the spot correction. That is, after the marking component 32 passes through the positioning reference hole 33, it contacts the ground and can be marked completely and accurately.

[0045] The marking component 32 can be a marking pin 321 or a marking pigment 322. For example, after the light spot correction is completed, the marking pin 321 can be directly inserted through the positioning reference hole 33 and into the pit to mark the positioning. Alternatively, a spray painting device, pigment pen, lime powder, or other powder with obvious color can be used as the marking pigment 322. For example, spraying paint vertically onto the light spot receiving plate 31 will allow the paint to pass through the positioning reference hole 33 and fall into the pit for marking. Alternatively, a pigment pen can be inserted into the positioning reference hole 33 and then contact the pit for marking. Or, a powder can be inserted through the positioning reference hole 33 and then fall into the pit for marking.

[0046] The surface of the light spot receiving plate 31 can be coated with reflective paint, and a red or green laser beam is used as the laser emitter 11 to increase the visibility of the light spot 112. At the same time, it also improves the detection accuracy of the laser rangefinder 12 when performing laser ranging. In order to facilitate finding the specific location of the light spot 112, the laser positioning component 1 can also be equipped with a laser projector 13, such as a laser projection device with crosshairs (refer to a laser level). It forms a projection pattern with a certain shape by continuously controlling the laser device to move back and forth, so as to find the location of the light spot 112 more quickly.

[0047] It should be noted that by using the laser rangefinder 12 for distance verification and the spot receiving component 3 for spot correction, the position of the spot 112 can be made closer to the theoretical position during actual positioning, thereby effectively improving the positioning accuracy of the spot 112 and further reducing the impact of the blasting hole on the blasting effect. At the same time, the above positioning scheme does not require manual measurement and positioning of each one, and can also effectively improve work efficiency.

[0048] Furthermore, in the above scheme, theoretically, the smaller the diameter of the positioning reference hole 33, the more accurate the positioning. However, the corresponding markings are also relatively small, making them difficult to detect during subsequent drilling operations. Therefore, this embodiment also provides an adjustable positioning reference hole scheme, as detailed in the appendix to the specification. Figures 9 to 12 The positioning reference hole 33 is a large hole structure. Multiple sets of control blades 331 are provided on the light spot receiving plate 31 corresponding to the positioning reference hole 33. The control blades 331 are movably arranged above the positioning reference hole 33. The control blades 331 close the positioning reference hole 33 by moving closer to or away from the positioning reference hole 33, and control the size of the effective aperture of the positioning reference hole 33 (i.e. the diameter of the cylinder that can be passed through).

[0049] Specifically, referring to the aperture structure of a camera, a control turntable 332 is set above the control blade 331. A guide ring 311 is fixedly installed in the light spot receiving plate 31. The guide ring 311 is provided with a rotation guide groove 312. The control turntable 332 is provided with a slider structure that is slidably installed in the rotation guide groove 312, thereby enabling the control turntable 332 to rotate relative to the guide ring 311. One end of the control blade 331 is rotatably installed on the control turntable 332. A connecting rod 333 is also rotatably installed on the control blade 331. The end of the connecting rod 333 away from the control blade 331 is rotatably connected to the guide ring 311. Thus, the control blade 331, control turntable 332, connecting rod 333, and guide ring 311 form a crank-slider structure. When the control turntable 332 is rotated, each control blade 331 can be controlled to simultaneously move closer to or further away from the positioning base. The reference hole 33 is used to close, open, and control the effective aperture of the positioning reference hole 33. In actual use, the light spot 112 is received and its position is adjusted with the help of the light spot receiving plate 31 and the control blades 331 (reflective paint can also be applied to the control blades 331 to improve the visibility of the light spot 112). After the adjustment is qualified, the light spot receiving plate 31 is slowly moved to move the light spot 112 to the center of all the control blades 331. Then, according to the requirements, the appropriate marking component 32 is selected, and the opening degree of the control blades 331 is adjusted to control the effective aperture. For example, the control blades 331 are first adjusted to open to a small range, and the marking nail 321 is inserted for center positioning. Then, the control blades 331 are fully opened, and the marking pigment 322 is applied for large-area marking to facilitate subsequent worker discovery and identification.

[0050] In the above embodiments, when facing relatively small depressions, the light spot receiving plate 31 can be directly placed on the plane around the depression, which is convenient to use. However, when facing larger depressions, if the light spot receiving plate 31 is made larger, it becomes relatively cumbersome to use. Therefore, this embodiment also makes the following improvements to the angle control mechanism component 2, specifically referring to the appendix to the specification. Figures 14 to 16 A support frame 34 is provided around the light spot receiving plate 31. The light spot receiving plate 31 is slidably mounted on the support frame 34. Support columns 341 are provided around the support frame 34. The support columns 341 are used to support and adjust the light spot receiving plate 31. When encountering a large pit, the entire light spot receiving plate 31 can be placed into the pit. With the support of the support columns 341, the height of the light spot receiving plate 31 can be adjusted (when facing a vertical working surface, this corresponds to distance adjustment). The horizontal adjustment can also be performed by the relative sliding between the light spot receiving plate 31 and the support frame 34. This makes it easier to adjust the light spot receiving plate 31 for light spot correction.

[0051] The support frame 34 is provided with a movable groove 342, and the spot receiving plate 31 is provided with a limiting nail 313. The limiting nail 313 is slidably disposed in the movable groove 342, and a damping structure, such as a rubber pad, is provided between the spot receiving plate 31 and the support frame 34 to facilitate self-positioning after the position of the spot receiving plate 31 is adjusted.

[0052] The support column 341 is a sliding rod structure 3411, which is slidably installed in the support frame 34. At least three sets of sliding rod structures 3411 are provided. A buffer elastic element is provided between the sliding rod structure 3411 and the support frame 34 to counteract the vertical gravity of the light spot receiving plate 31. A damping structure, such as a rubber sleeve, is also provided between the sliding rod structure 3411 and the support frame 34 to facilitate automatic positioning after the height of the light spot receiving plate 31 is adjusted. At the same time, in order to make the light spot receiving plate 31 relatively horizontal, a level 35 is fixedly installed on the top of each sliding rod structure 3411. A simple bubble level or a high-precision level sensor can be used to adjust the light spot receiving plate 31 to a horizontal state during actual placement.

[0053] Furthermore, in the above scheme, it is assumed that each blasting hole is drilled perpendicular to the working surface. Therefore, during positioning, it is only necessary to ensure that the marking component 32 passes through the positioning reference hole 33 perpendicular to the working surface. Thus, the actual marking point falling into the pit is relatively accurate. However, for some blasting holes, it is necessary to drill at an angle, and the angle of inclination is fixed. Therefore, it is not easy to determine the passing angle of the marking component 32 during manual marking. For this reason, please refer to the appendix to the instruction manual. Figure 17 and Figure 18 This embodiment also provides an improved scheme for an automatically controlled light spot receiving component. The support column 341 is an automatic telescopic rod 3412 (e.g., a cylinder or hydraulic cylinder). At least three sets of automatic telescopic rods 3412 are provided. An attitude sensor assembly 37 is provided on the light spot receiving plate 31. The attitude sensor assembly 37 includes a horizontal tilt sensor and a direction sensor. Two sets of rectangular frames 36 are slidably arranged below the light spot receiving plate 31. The marking component 32 is a marking nail 321. The overlapping area of ​​the two sets of rectangular frames 36 forms a limiting area for restricting the marking nail 321. The sliding directions of the two sets of rectangular frames 36 are perpendicular to each other, and the movement of the two sets of rectangular frames 36 is controlled by a set of motion drivers 361 (e.g., a motor screw structure or a cylinder structure).

[0054] By adopting the above scheme, when the spot receiving plate 31 is placed in the pit, the spot receiving plate 31 is first adjusted to a horizontal state. Then, based on the position parameters obtained from the position of the spot 112 on the spot receiving plate 31, the height of the spot receiving plate 31 is adjusted until the position parameters of the spot 112 detected by the laser rangefinder 12 meet the requirements. Then, the spot receiving plate 31 is moved to make the spot 112 correspond to the positioning reference hole 33. At the same time, based on the tilt parameters corresponding to the position of the blast hole, after obtaining the direction information of the spot receiving plate 31 at this point through the rectangular frame 36, the extension and retraction parameters of the two sets of moving actuators 361 are calculated, thereby controlling the two sets of rectangular frames 36 to move to the corresponding positions. At this time, the restricted area formed by the two sets of rectangular frames 36 deviates from the positioning reference hole 33. At this time, after inserting the marker nail 321 into the restricted area of ​​the positioning reference hole 33 and the rectangular frame 36, the angle restriction of the marker nail 321 can be formed, thereby achieving more accurate positioning.

[0055] It should be noted that the above is only an example of the initial simple light spot receiving plate 31. In actual application, the appropriate option can be selected according to cost requirements. For example, when combined with the adjustable positioning reference hole scheme, the control blade 331 is first operated to open a smaller hole, and after positioning with the marking nail 321, the control blade 331 is opened again to apply marking pigment 322 for large-area marking, so as to facilitate subsequent worker identification. If the cost allows, an automatic marking component 32 can also be used. In addition, all the above schemes are based on the instructions attached. Figure 3 The diagram shows the location of blasting holes on a horizontal working surface; therefore, the corresponding scheme description also uses the horizontal plane as a reference. However, for similar instructions... Figure 4 For the vertical working surface shown, the positioning principle is the same as described above. Only the difference between horizontal and vertical needs to be noted. Therefore, this embodiment will not be explained in detail.

[0056] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A blasting hole-assisted positioning device for mining operations, characterized in that: It includes a laser positioning component (1), an angle control component (2), and a spot receiving component (3). The laser positioning component (1) includes a laser emitter (11) and a laser rangefinder (12). The angle control component (2) is used to control the laser positioning component (1) to rotate along the X-axis and Z-axis. The laser emitter (11) is used to emit a laser beam (111) and form a light spot (112) on the working surface. The laser rangefinder (12) is used to measure the distance parameter from the light spot (112) to the laser positioning component (1). The light spot receiving component (3) includes a light spot receiving plate (31) and an marking component (32). The marking component (32) has a positioning reference hole (33) in the middle. The light spot receiving plate (31) is used to receive the light spot (112) above the pit. The marking component (32) is used to penetrate the positioning reference hole (33) and fall into the pit for positioning and marking. The marking component (32) includes a marking pin (321) and a marking pigment (322). The marking pin (321) is a cylindrical pin structure, and the marking pigment (322) is a colored powder material. The light spot receiving plate (31) is provided with a support frame (34) around its periphery. The light spot receiving plate (31) is slidably mounted on the support frame (34). The support frame (34) is provided with support columns (341) around its periphery. The support columns (341) are used to support and adjust the light spot receiving plate (31). With the support of the support columns (341), the height of the light spot receiving plate (31) can be adjusted. Two sets of rectangular frames (36) are slidably arranged below the light spot receiving plate (31). The overlapping area of ​​the two sets of rectangular frames (36) forms a restriction area for restricting the marking nail (321). The sliding directions of the two sets of rectangular frames (36) are perpendicular to each other, and the two sets of rectangular frames (36) are respectively controlled by a set of motion drivers (361).

2. The blasting hole auxiliary positioning device for mining as described in claim 1, characterized in that: The angle control assembly (2) includes a bracket assembly (21), a Z-axis rotation adjuster (22), and an X-axis rotation adjuster (23). The Z-axis rotation adjuster (22) is rotatably mounted on the bracket assembly (21) along the Z-axis direction. The X-axis rotation adjuster (23) is rotatably mounted on the Z-axis rotation adjuster (22) along the X-axis direction. The laser positioning assembly (1) is fixedly mounted on the X-axis rotation adjuster (23). The Z-axis rotation adjuster (22) is used to drive the laser positioning assembly (1) to rotate along the Z-axis direction, and the X-axis rotation adjuster (23) is used to drive the laser positioning assembly (1) to rotate along the X-axis direction.

3. The blasting hole auxiliary positioning device for mining according to claim 2, characterized in that: The light spot receiving plate (31) is provided with multiple sets of control blades (331) corresponding to the positioning reference hole (33). The control blades (331) are movably arranged above the positioning reference hole (33). The control blades (331) close or move away from the positioning reference hole (33) to control the closure of the positioning reference hole (33) and control the size of the effective aperture of the positioning reference hole (33).

4. The blasting hole auxiliary positioning device for mining as described in claim 3, characterized in that: A control turntable (332) is provided above the control blade (331). A guide ring (311) is fixedly installed in the light spot receiving plate (31). A rotation guide groove (312) is provided on the guide ring (311). A slider structure is provided on the control turntable (332) and slidably installed in the rotation guide groove (312), thereby enabling the control turntable (332) to rotate relative to the guide ring (311). One end of the control blade (331) is rotatably installed on the control turntable (332). A connecting rod (333) is also rotatably installed on the control blade (331). The end of the connecting rod (333) away from the control blade (331) is rotatably connected to the guide ring (311).

5. A blasting hole-assisted positioning device for mining according to claim 4, characterized in that: The support frame (34) is provided with a movable groove (342), and the light spot receiving plate (31) is provided with a limiting nail (313). The limiting nail (313) is slidably disposed in the movable groove (342), and a damping structure is provided between the light spot receiving plate (31) and the support frame (34).

6. A blasting hole auxiliary positioning device for mining according to claim 5, characterized in that: The supporting column (341) is a sliding rod structure (3411), which is slidably installed in the support frame (34). At least three sets of the sliding rod structure (3411) are provided. A buffer elastic element is provided between the sliding rod structure (3411) and the support frame (34), and a damping structure is provided between the sliding rod structure (3411) and the support frame (34).

7. A blasting hole auxiliary positioning device for mining according to claim 5, characterized in that: The supporting column (341) is an automatic telescopic rod (3412), and at least three sets of the automatic telescopic rod (3412) are provided. An attitude sensor assembly (37) is provided on the light spot receiving plate (31), and the attitude sensor assembly (37) includes a horizontal tilt sensor and a direction sensor.

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