Mining blasting hole depth verification structure

Abstract

The utility model provides a mining blasting hole depth verification structure, which belongs to the technical field of mining blasting and comprises a vertical frame, a rope winding disc is rotatably arranged on the vertical frame, a spiral rope winding groove is arranged on the circumferential outer wall of the rope winding disc, and a measuring rope positioned in an inner cavity of the rope winding groove is wound on the outer wall of the rope winding disc. One end of the measuring rope is fixedly connected to the outer wall of the rope winding disc, the three detection wheels are dispersed outwards at the same time through the linkage winding and unwinding assembly, the outward diffusion angle of the three detection wheels is adjusted according to the radial size of the blast hole, and the three detection wheels are clamped to the inner wall of the blast hole in the circumferential direction. The stability of the measuring rope in the process of moving along with the verification probe is ensured, and the verification probe is prevented from falling off due to gravity when measurement is carried out in the blast hole in the side direction and the top slope, so that the measuring rope is prevented from being stacked in the blast hole, and the measuring rope is ensured to be in a straightened state in the verification and unwinding process; and the accuracy of the measurement result in the blast hole is ensured.

Description

Technical Field

[0001] This utility model relates to the field of mining blasting technology, specifically to a blasting hole depth verification structure for mining. Background Technology

[0002] Blasting mining, also known as blasting mining, refers to a coal mining process in longwall faces that uses blasting methods to break and load coal, followed by manual loading, conveyor transport, and single-prop support. Blasting mining is applied in mining science, and its material is explosives. During blasting, blasting tubes containing explosives are typically used. Construction is carried out according to the blasting points; the amount of explosive required varies at different locations, thus requiring different burial depths for the blasting tubes. Therefore, it is necessary to calibrate the blasting hole diameter.

[0003] A related technology (publication number: CN214464117U) discloses a blast hole depth measuring device for mining blasting. The disclosed technical solution is as follows: by setting up a fixed frame, a motor, a rotating shaft, a winding reel, a graduated rope, and a lifting cone, the user can move the device to the top of the blast hole and then adjust the support of the device. By turning on the motor, the motor can drive the rotating shaft to rotate. Under the driving action of the rotating shaft, the graduated rope on the outer wall of the winding reel can drive the lifting cone into the blast hole to measure the blast hole depth. Thus, the device can measure the blast hole depth by using the wound measuring rope, thereby effectively reducing the overall carrying volume of the device and improving the portability of the device.

[0004] The above-disclosed technical solutions reveal the following problems: during the detection of blast hole depth, if the measuring rope becomes taut while probing inside the blast hole, it will affect the accuracy of the measurement results. For some lateral and top-side measuring holes, gravity may cause the measuring rope to fall out of the hole, affecting the normal progress of the measurement process. To address this, we propose a novel structure for verifying the depth of blast holes in mining.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the problem of blasting hole depth verification in the prior art, this utility model provides a blasting hole depth verification structure for mining. It employs a stable moving structure within the blasting hole combined with a blasting hole adaptation structure to improve the accuracy of the verification results. The specific technical solution is as follows:

[0007] A blasting hole depth verification structure for mining includes a frame on which a rope reel is rotatably mounted. A spiral winding groove is formed on the outer circumferential wall of the rope reel. A measuring rope located inside the winding groove is wound around the outer wall of the rope reel. One end of the measuring rope is fixed to the outer wall of the rope reel, and the other end is fixed to a verification probe. Detection wheels are rotatably mounted circumferentially on the outer wall of the verification probe, and a linkage extension / retraction assembly is provided on the outer wall of the verification probe to simultaneously extend and retract all detection wheels.

[0008] In the above technical solution, the linkage retraction and extension assembly includes a retraction and extension frame that is circumferentially and uniformly rotatably disposed on the outer wall of the verification probe, and the detection wheel is disposed at the bottom of the retraction and extension frame. An outer toothed sleeve is sleeved on the outer wall of the verification probe. The retraction and extension frame is circumferentially and uniformly disposed with teeth that mesh with the outer toothed sleeve. A drive gear that meshes with the outer toothed sleeve is rotatably disposed on the outer wall of the verification probe.

[0009] The outer wall of the stand is uniformly provided with protective frames on the circumferential direction, and the protective frames cover the outside of the rope reel. One of the protective frames is provided with a rope-grooming component for smoothing and winding the measuring rope.

[0010] The rope-guiding component includes a lead screw rotatably mounted on the inner wall of one of the guards, and the outer wall of the lead screw is threadedly connected to a rope-guiding frame facing the rope reel.

[0011] The inner wall of the guard is fixedly equipped with a guide rod parallel to the lead screw, and the rope-guiding frame is sleeved on the outside of the guide rod.

[0012] One of the probe wheels is equipped with a drive mechanism.

[0013] Ball bearings are evenly arranged circumferentially between the outer toothed sleeve and the calibration probe.

[0014] The direction of travel of the detection wheel is in the same direction as the axis of the calibration probe.

[0015] A camera is installed at the end of the calibration probe furthest from the measuring rope.

[0016] The outer wall of the measuring rope is evenly marked with graduation lines.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the blasting hole depth verification structure for mining:

[0018] 1. The linkage winding and unwinding assembly causes the three probe wheels to spread outwards simultaneously, allowing the calibration probe to move along the inside of the blast hole. By circumferentially engaging the three probe wheels with the inner wall of the blast hole, the stability of the measuring rope during the movement of the calibration probe is ensured. This prevents the calibration probe from falling off due to gravity when measuring in the lateral or top blast holes, thus preventing the measuring rope from piling up inside the blast hole. This ensures that the measuring rope remains taut during the calibration unwinding process, thereby guaranteeing the accuracy of the measurement results inside the blast hole.

[0019] 2. When adjusting the position of the three detection wheels according to the size of the blast hole, the output shaft of the motor drives the drive gear to rotate, which in turn rotates the outer gear sleeve meshing with the drive gear. This causes the three retractable frames, which mesh with the outer gear sleeves simultaneously, to rotate at the same time. As the retractable frames rotate, they cause the detection wheels to unfold outward in a circumferential direction, so that the detection wheels fit against the inner wall of the blast hole. Thus, the position of the three detection wheels can be adjusted according to the diameter of the blast hole, making it applicable to the inspection of blast holes with different diameters.

[0020] Third, the rope-guiding component ensures that the measuring rope is evenly wound inside the rope-retracting groove, preventing adjacent sections from stacking during winding and thus guaranteeing the neatness of the winding rope.

[0021] Fourth, fix one end of the measuring rope to the inner wall of one end of the rope take-up groove, and then spirally wind the measuring rope around the rope take-up groove so that the measuring rope is neatly wound on the outer wall of the reel, preventing the measuring rope from falling off during the winding and unwinding process, making the winding and unwinding process more convenient, and thus providing a protective effect for the measuring rope.

[0022] 5. During the process of rotating the lead screw to organize the rope winding of the measuring rope, the rope organizing frame slides against the outside of the guide rod. The guide rod, which is parallel to the lead screw, ensures the stability of the horizontal displacement of the rope organizing frame and avoids positional deviation, thereby ensuring the stability of the measuring rope winding and organizing process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a blasting hole depth verification structure for mining according to the present invention;

[0024] Figure 2 This is an exploded view of the structure of a blasting hole depth verification structure for mining according to the present invention;

[0025] Figure 3 This is a cross-sectional view of the calibration probe portion of this utility model;

[0026] Figure 4 for Figure 2 A magnified view of part A;

[0027] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-stand, 2-rope reel, 3-rope winding groove, 4-measuring rope, 5-calibration probe, 6-lead screw, 7-protective frame, 8-rope handling frame, 9-drive gear, 10-camera, 11-lighting lamp, 12-winding frame, 13-detection wheel, 14-tooth, 15-central shaft, 16-wheel frame, 17-shaft, 18-fixed frame, 19-scale line, 20-guide rod, 21-rotating shaft, 22-outer gear sleeve. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The following are specific implementation cases and appendices. Figure 1-4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0030] A blasting hole depth verification structure for mining includes a frame 1, on which a rope reel 2 is rotatably mounted. Bearings are embedded in the inner walls on both sides of the frame 1. One end of two rotating shafts 21 is embedded in the two bearings, and the other ends of the two rotating shafts 21 are vertically fixed at the center positions on both sides of the rope reel 2, allowing the rope reel 2 to rotate between the two frames 1. The frame 1 positions the rope reel 2 in the position to be verified. A spiral rope take-up groove 3 is formed on the circumferential outer wall of the rope reel 2. A measuring rope 4 located inside the rope take-up groove 3 is wound around the outer wall of the rope reel 2, with one end of the measuring rope 4 fixed to the outer wall of the rope reel 2 and the other end fixed to a verification probe 5.

[0031] A spiral winding groove 3 is made on the outer circumferential wall of the winding reel 2. One end of the measuring rope 4 is fixedly installed on the inner wall of one end of the winding groove 3. Then, the measuring rope 4 is spirally wound around the winding groove 3, so that the measuring rope 4 is neatly wound on the outer wall of the winding reel 2, preventing the measuring rope 4 from falling off during winding and unwinding, making the winding and unwinding process of the measuring rope 4 more convenient, and thus providing a protective effect for the measuring rope 4.

[0032] The outer wall of the calibration probe 5 is uniformly equipped with circumferentially rotating detection wheels 13, and the outer wall of the calibration probe 5 is equipped with a linkage winding and unwinding assembly that drives all detection wheels 13 to simultaneously wind and unwind. The calibration probe 5 is fixedly installed at the unwinding end of the measuring rope 4, and the fixing frame 18 is uniformly fixedly installed sequentially on the circumferential outer wall of the calibration probe 5. Bearings are embedded in the inner walls on both sides of the fixing frame 18, and the two ends of the central shaft 15 are respectively embedded in the two bearings. The winding and unwinding frame 12 is fixedly sleeved on the outside of the central shaft 15 through the mounting hole that penetrates the inner cavity, so that the winding and unwinding frame 12 is in a position relatively perpendicular to the calibration probe 5.

[0033] A wheel frame 16 is fixedly installed on the surface of the take-up and take-down frame 12 near the measuring rope 4. Bearings are embedded in the inner walls on both sides of the wheel frame 16. The two ends of the shaft body 17 are respectively embedded in the two bearings. The probe wheel 13 is fixedly sleeved on the outside of the shaft body 17 through the central mounting hole, so that the probe wheel 13 rotates on the take-up and take-down frame 12.

[0034] The three detection wheels 13 are simultaneously spread outward by the linkage winding and unwinding assembly. The angle of the outward spread of the three detection wheels 13 is adjusted according to the radial size of the blast hole, so that the three detection wheels 13 are attached to the inner wall of the blast hole. Then, the motor output shaft on the wheel frame 16 where one of the detection wheels 13 is located drives the corresponding detection wheel 13 to rotate, so that the verification probe 5 moves along the inside of the blast hole. As the verification probe 5 moves, the measuring rope 4 wound on the rope reel 2 is unwound until the verification probe 5 moves to the innermost side of the blast hole. At this time, the value on the measuring rope 4 is read.

[0035] By circumferentially engaging the three probe wheels 13 with the inner wall of the blast hole, the stability of the measuring rope 4 is ensured as the calibration probe 5 moves, preventing the calibration probe 5 from falling off due to gravity when measuring in the blast hole in the lateral and top directions. This prevents the measuring rope 4 from piling up in the blast hole, ensuring that the measuring rope 4 remains taut during calibration and unwinding, thereby guaranteeing the accuracy of the measurement results in the blast hole.

[0036] The linkage retraction and deployment assembly includes a retraction frame 12 that is circumferentially and uniformly rotatable on the outer wall of the verification probe 5, with a detection wheel 13 located at the bottom of the retraction frame 12. An outer toothed sleeve 22 is fitted onto the outer wall of the verification probe 5. Gear teeth are evenly spaced on the circumferential outer wall of the outer toothed sleeve 22, which is movably fitted onto the outside of the verification probe 5 through a central through-hole, allowing the outer toothed sleeve 22 to fit against the outer wall of the verification probe 5 and rotate circumferentially.

[0037] The take-up and unfolding frame 12 is evenly provided with teeth 14 that mesh with the outer gear sleeve 22. A drive gear 9 that meshes with the outer gear sleeve 22 is rotatably mounted on the outer wall of the inspection probe 5. The side of the take-up and unfolding frame 12 facing the outer gear sleeve 22 is semi-circular, with teeth 14 arranged sequentially on the circumferential outer wall of the semi-circumference. The positions of the take-up and unfolding frames 12 are arranged sequentially circumferentially around the outer circumference of the outer gear sleeve 22, so that all three take-up and unfolding frames 12 simultaneously mesh with the outer gear sleeve 22 circumferentially. The motor is fixed to the outer wall of the inspection probe 5 by a cover, and the drive gear 9 is fixedly sleeved onto the outside of the motor output shaft through a central mounting hole. The motor is connected to an external power source via wires.

[0038] When adjusting the positions of the three detection wheels 13 according to the size of the blast hole, the motor is connected to the power supply, causing the output shaft of the motor to drive the drive gear 9 to rotate. This causes the outer gear sleeve 22, which meshes with the drive gear 9, to rotate, and the three retractable frames 12, which mesh with the outer gear sleeves 22 simultaneously, to rotate at the same time. As the retractable frames 12 rotate, the detection wheels 13 are driven to unfold outward circumferentially, so that the detection wheels 13 are in contact with the inner wall of the blast hole. Thus, the positions of the three detection wheels 13 can be adjusted according to the diameter of the blast hole, making it applicable to the inspection of blast holes of different diameters.

[0039] The outer wall of the support frame 1 is evenly provided with protective frames 7 in the circumferential direction, and the protective frames 7 cover the outside of the rope winding reel 2. The multiple protective frames 7 located on the outer perimeter provide protection for the measuring rope 4, preventing the measuring rope 4 from detaching from the rope winding groove 3 during the winding and unwinding process. One of the protective frames 7 is provided with a rope-straightening component for smoothing and winding the measuring rope 4.

[0040] The rope-guiding component ensures that the measuring rope 4 is evenly wound inside the rope-retracting groove 3, preventing adjacent sections of the measuring rope 4 from stacking during winding, thus guaranteeing the neatness of the measuring rope 4 after winding.

[0041] It is worth noting that the rope-guiding component includes a lead screw 6 rotatably mounted on the inner wall of one of the guard frames 7, with a rope-guiding frame 8 threadedly connected to the outer wall of the lead screw 6, facing the rope reel 2. Bearings are embedded in the inner walls of both sides of one of the guard frames 7, and the two ends of the lead screw 6 are respectively embedded in the two bearings. A motor is fixed to the outer wall of the guard frame 7 by a cover, and the output shaft of the motor passes through the guard frame 7 and is fixedly connected to one end of the lead screw 6. The motor is connected to an external power source via wires. The rope-guiding frame 8 is connected to the lead screw 6 through a threaded through-hole penetrating the inner cavity.

[0042] When the measuring rope 4 is wound up, the output shaft of the motor drives the lead screw 6 to rotate, which causes the rope guide frame 8 to change the winding direction of the measuring rope 4 laterally, so that the measuring rope 4 is wound around the inside of the winding groove 3 in sequence, ensuring that the measuring rope 4 is neat after winding up.

[0043] In addition, a guide rod 20 parallel to the lead screw 6 is fixedly installed on the inner wall of the guard 7, and the rope organizer 8 is sleeved on the outside of the guide rod 20. During the process of rotating the lead screw 6 to organize the rope 4 by winding the rope organizer 8, the rope organizer 8 slides against the outside of the guide rod 20. The guide rod 20, which is parallel to the lead screw 6, ensures the stability of the horizontal displacement of the rope organizer 8 and avoids positional deviation, thereby ensuring the stability of the winding and organizing process of the rope 4.

[0044] One of the detection wheels 13 is equipped with a drive unit. The drive unit can be a motor, which is fixed to the wheel frame 16 corresponding to one of the detection wheels 13 by a cover. The output shaft of the motor passes through the side wall of the corresponding wheel frame 16 and is fixedly connected to one end of the shaft body 17. This allows the detection wheel 13 to move within the blast hole.

[0045] Ball bearings are evenly arranged circumferentially between the outer gear sleeve 22 and the calibration probe 5. A sliding groove is formed on the inner circumferential wall of the outer gear sleeve 22, and movable grooves are sequentially formed circumferentially on the outer circumferential wall of the calibration probe 5. Each ball bearing is movably embedded in the movable cavity formed by each movable groove and the sliding groove, ensuring the stability of the outer gear sleeve 22 during rotation.

[0046] In addition, the travel direction of the probe wheel 13 is in the same direction as the axis of the calibration probe 5. This ensures that the probe wheel 13 can move stably along the inner wall of the blast hole.

[0047] Furthermore, a camera 10 is installed at the end of the calibration probe 5 furthest from the measuring rope 4. The camera 10 is connected to an external display via a wire, so that the image captured by the camera 10 is displayed on the display, thereby providing a clear understanding of the situation inside the blast hole.

[0048] Illumination lamps 11 are sequentially installed on the circumferential outer wall of the calibration probe 5. Each illumination lamp 11 is connected to an external power source via a wire, and can also be connected to a built-in battery via a wire. The illumination lamps 11 illuminate the detection process of the camera 10, improving the clarity of the detection process.

[0049] The outer wall of the measuring rope 4 is evenly marked with graduation lines 19.

[0050] This embodiment describes a blasting hole depth verification structure for mining. The working principle is as follows: First, the verification probe 5 is embedded into the blasting hole. Then, the motor is connected to the power supply, so that the output shaft of the motor drives the drive gear 9 to rotate, causing the outer gear sleeve 22 meshing with the drive gear 9 to rotate. This causes the three retractable frames 12, which mesh with the outer gear sleeves 22 at the same time, to rotate simultaneously. As the retractable frames 12 rotate, the detection wheel 13 is driven to unfold outward in a circumferential direction, so that the detection wheel 13 is attached to the inner wall of the blasting hole.

[0051] Then, the motor output shaft on the wheel frame 16 where one of the detection wheels 13 is located drives the corresponding detection wheel 13 to rotate, so that the verification probe 5 moves along the blast hole. As the verification probe 5 moves, the measuring rope 4 wound on the rope reel 2 is unwound until the verification probe 5 moves to the innermost part of the blast hole. At this time, the value on the measuring rope 4 is read.

[0052] After the blast hole is inspected, the measuring rope 4 is wound onto the rope reel 2. At the same time, the output shaft of the motor drives the lead screw 6 to rotate, which causes the rope guide frame 8 to change the winding direction of the measuring rope 4 laterally, so that the measuring rope 4 is wound into the inside of the rope take-up groove 3 in sequence.

[0053] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blasting hole depth determination structure for mining, comprising a frame (1), wherein a rope reel (2) is rotatably mounted on the frame (1), characterized in that: The outer circumferential wall of the rope reel (2) is provided with a spiral rope take-up groove (3). A measuring rope (4) located in the inner cavity of the rope take-up groove (3) is wound on the outer wall of the rope reel (2). One end of the measuring rope (4) is fixed to the outer wall of the rope reel (2), and the other end of the measuring rope (4) is fixed to a calibration probe (5). The outer wall of the calibration probe (5) is provided with a detection wheel (13) that rotates evenly in the circumferential direction. The outer wall of the calibration probe (5) is provided with a linkage take-up and release assembly that drives all detection wheels (13) to retract and extend simultaneously.

2. The blasting hole depth determination structure for mining according to claim 1, characterized in that: The linkage retraction assembly includes a retraction frame (12) that is circumferentially and evenly rotatably mounted on the outer wall of the inspection probe (5), and the detection wheel (13) is located at the bottom of the retraction frame (12). An outer toothed sleeve (22) is fitted onto the outer wall of the inspection probe (5). The retraction frame (12) is circumferentially and evenly provided with teeth (14) that mesh with the outer toothed sleeve (22). A drive gear (9) that meshes with the outer toothed sleeve (22) is rotatably mounted on the outer wall of the inspection probe (5).

3. The blasting hole depth detection structure for mining according to claim 1, characterized in that: The outer wall of the stand (1) is uniformly provided with a guard (7) in the circumferential direction, and the guard (7) covers the outside of the rope reel (2). One of the guards (7) is provided with a rope-grooming component for smoothing and winding the measuring rope (4).

4. The blast hole depth verification structure for mining according to claim 3, characterized in that: The rope-guiding component includes a screw (6) rotatably mounted on the inner wall of one of the guards (7), and the outer wall of the screw (6) is threadedly connected to a rope-guiding frame (8) facing the rope reel (2).

5. The blasting hole depth verification structure for mining according to claim 4, characterized in that: The inner wall of the guard (7) is fixedly installed with a guide rod (20) parallel to the lead screw (6), and the rope rack (8) is sleeved on the outside of the guide rod (20).

6. The blasting hole depth determination structure for mining according to claim 1, characterized in that: One of the probe wheels (13) is equipped with a drive unit.

7. The blast hole depth verification structure for mining according to claim 2, characterized in that: Ball bearings are evenly arranged circumferentially between the outer toothed sleeve (22) and the calibration probe (5).

8. The blast hole depth determination structure for mining according to claim 1, characterized in that: The direction of travel of the detection wheel (13) is in the same direction as the axis of the calibration probe (5).

9. The blast hole depth determination structure for mining according to claim 1, characterized in that: A camera (10) is installed at the end of the calibration probe (5) away from the measuring rope (4).

10. The blast hole depth detection structure for mining according to claim 1, characterized in that: The outer wall of the measuring rope (4) is evenly provided with scale lines (19).

Images