Blast hole depth measuring device for mining blasting
By combining a laser distance sensor and an angle sensor with a lifting screw, the problems of accuracy and efficiency in borehole depth measurement were solved, enabling high-precision and rapid borehole depth measurement that can adapt to complex environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN ZHONGHUI NONFERROUS METALS CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-19
AI Technical Summary
Existing methods for measuring borehole depth are highly susceptible to human error, and are difficult and inefficient when the borehole is deep or the environment inside is complex.
By combining a laser distance sensor and an angle sensor with a lifting lead screw, and through an internal threaded transmission tube and an electric telescopic rod, the measuring probe achieves high-precision and fast-response depth measurement, and can perform linear and swing adjustments within the borehole.
It achieves high-precision and rapid measurement of borehole depth, adapts to complex environments, and improves measurement efficiency and accuracy.
Smart Images
Figure CN224260328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mining blasting technology, specifically to a blast hole depth measuring device for mining blasting. Background Technology
[0002] Mining blasting is an engineering technique that uses the energy generated by explosive explosions to break and throw media such as ores and rocks. During the mining process, blast holes of a certain size and depth are typically drilled into the ore or rock mass to be mined. Explosives are loaded into the blast holes, and then a detonation device triggers the explosion. The surrounding media are broken and displaced under the action of the blast shock wave and the generated gases, thereby achieving the purpose of mining ore, stripping overburden, or opening up mining space.
[0003] In mining blasting operations, accurate measurement of borehole depth is crucial. Borehole depth directly affects the amount of explosives loaded, the blasting effect, and the safety and efficiency of mining operations.
[0004] However, in practical applications, the commonly used methods for measuring borehole depth are mainly manual measurement and simple mechanical measurement. Manual measurement usually involves inserting a graduated rod into the borehole and determining the depth by reading the length of the rod inside the borehole. However, this method has many drawbacks, such as the measurement accuracy being greatly affected by human factors, and the difficulty and efficiency of measurement when the borehole is deep or the environment inside the borehole is complex. Utility Model Content
[0005] The purpose of this utility model is to provide a borehole depth measuring device for mining blasting, so as to solve the problems mentioned in the background art. The commonly used methods for measuring borehole depth are mainly manual measurement and simple mechanical measurement. Manual measurement usually uses a long rod with scales to be inserted into the borehole, and the depth is determined by reading the length of the rod entering the borehole. However, this method has many disadvantages, such as the measurement accuracy being greatly affected by human factors, and the difficulty and low efficiency of measurement when the borehole is deep or the environment inside the hole is complex.
[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a movable base, a support frame fixedly installed on the upper rear side of the movable base, a swing arm rotatably connected to the upper end of the support frame via a pin, a support rod fixedly installed at the rear end of the swing arm, an electric telescopic rod rotatably connected to the upper rear side of the movable base via a bearing seat, an internally threaded transmission tube rotatably connected to the upper front side of the swing arm via a rotating shaft, a drive motor fixedly installed at the inner top of the swing arm, a transmission gear fixedly installed on the lower transmission shaft of the drive motor, a transmission gear ring meshing with the front end of the transmission gear, a lifting screw threadedly connected to the inner wall of the internally threaded transmission tube, a connecting plate fixedly installed at the upper top of the lifting screw, limit sliding rods fixedly installed on both sides of the connecting plate, a limit sliding tube fixedly installed through the upper front side of the swing arm, and a measuring probe for measuring the depth of the borehole fixedly installed at the bottom of the lifting screw.
[0007] Preferably, four movable rollers are fixedly installed at the four corners of the lower end of the movable base, and the number of movable rollers is four, which are symmetrically distributed at the four corners of the lower end of the movable base. The movable rollers are made of lockable rollers.
[0008] Preferably, a power control cabinet is fixedly installed at the front end of the mobile base, and a mobile power supply is fixedly installed inside the power control cabinet.
[0009] Preferably, the upper end of the electric telescopic rod is inclined backward, and the telescopic part of the upper end of the electric telescopic rod is rotatably connected to the rear end of the support rod by a pin.
[0010] Preferably, the transmission gear ring is fixedly installed on the outer curved surface of the lower end of the internally threaded transmission tube.
[0011] Preferably, there are two limiting slide rods, which are symmetrically distributed on both sides of the connecting plate. The lower end of the limiting slide rod is movably connected to the inner wall of the limiting slide tube, and the bottom of the limiting slide rod is fixedly installed on both sides of the upper end of the measuring probe.
[0012] Preferably, a laser distance sensor and an angle sensor are fixedly installed at the lower end of the measuring probe.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] When the drive motor is turned on, it drives the internal threaded transmission tube to rotate. The force generated by the threaded connection causes the lifting screw to move linearly up and down. When the lifting screw moves linearly downward, it drives the measuring probe to move linearly downward into the borehole. When the measuring probe moves linearly downward into the borehole, the distance sensor at the lower end of the measuring probe is used to measure the distance from the front end of the lifting screw to the bottom of the borehole. Laser ranging is used, which has the characteristics of high precision and fast response. The angle sensor is used to measure the tilt angle of the lifting screw in the borehole. By measuring the tilt angle and combining it with the extension length of the lifting screw, the actual depth of the borehole can be calculated accurately.
[0015] This invention also features a swing arm that swings back and forth via a support rod when the electric telescopic rod extends or retracts. When the swing arm swings back and forth, it simultaneously drives the lifting screw to swing back and forth. When the lifting screw swings back and forth, it drives the measuring probe to swing back and forth. This allows the measuring probe to measure the depth of the borehole while simultaneously adjusting the measuring angle of the measuring probe by swinging it back and forth. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a borehole depth measuring device for mining blasting according to this utility model. Figure 1 ;
[0017] Figure 2 This is a schematic diagram of the overall structure of a borehole depth measuring device for mining blasting according to this utility model. Figure 2 ;
[0018] Figure 3 This is a partial structural schematic diagram of a blast hole depth measuring device for mining blasting according to the present invention.
[0019] In the diagram: 1. Movable base; 2. Movable rollers; 3. Power control cabinet; 4. Support frame; 5. Swing arm; 6. Support rod; 7. Electric telescopic rod; 8. Internal threaded transmission tube; 9. Drive motor; 10. Transmission gear; 11. Transmission gear ring; 12. Lifting screw; 13. Connecting plate; 14. Limiting slide bar; 15. Limiting slide tube; 16. Measuring probe. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-3This utility model provides a technical solution for a blast hole depth measuring device for mining blasting: it includes a movable base 1, and movable rollers 2 are fixedly installed at the four corners of the lower end of the movable base 1. There are four movable rollers 2, which are symmetrically distributed at the four corners of the lower end of the movable base 1. The movable rollers 2 are made of lockable rollers, so that the movable base 1 can be pushed and moved by the movable rollers 2 while being locked and fixed. A power control cabinet 3 is fixedly installed at the front end of the movable base 1, and a mobile power supply is fixedly installed inside the power control cabinet 3.
[0022] A support frame 4 is fixedly installed on the rear side of the upper end of the mobile base 1. A swing arm 5 is rotatably connected to the upper end of the support frame 4 via a pin. A support rod 6 is fixedly installed at the rear end of the swing arm 5. An electric telescopic rod 7 is rotatably connected to the rear side of the upper end of the mobile base 1 via a bearing seat. The upper end of the electric telescopic rod 7 is tilted backward. The telescopic part of the upper end of the electric telescopic rod 7 is rotatably connected to the rear end of the support rod 6 via a pin. An internally threaded transmission tube 8 is rotatably connected to the front side of the upper end of the swing arm 5 via a rotating shaft. A drive motor 9 is fixedly installed at the top end of the swing arm 5. A transmission gear 10 is fixedly installed on the transmission shaft part of the lower end of the drive motor 9. A transmission gear ring 11 is meshed with the front end of the transmission gear 10. The transmission gear ring 11 is fixedly installed on the outer curved surface of the lower end of the internally threaded transmission tube 8. A lifting screw 12 is threadedly connected to the inner wall of the transmission tube 8. A connecting plate 13 is fixedly installed at the top of the lifting screw 12. Limiting slide rods 14 are fixedly installed on both sides of the connecting plate 13. There are two limiting slide rods 14, which are symmetrically distributed on both sides of the connecting plate 13. A limiting slide tube 15 is fixedly installed through the front of the upper end of the swing arm 5. The lower end of the limiting slide rod 14 is movably connected to the inner wall of the limiting slide tube 15. A measuring probe 16 for measuring the depth of the borehole is fixedly installed at the bottom of the lifting screw 12. The bottom of the limiting slide rod 14 is fixedly installed on both sides of the upper end of the measuring probe 16, so that the measuring probe 16 can be linearly moved and limited by the limiting slide rod 14 in conjunction with the limiting slide tube 15. A laser distance sensor and an angle sensor are fixedly installed at the lower end of the measuring probe 16.
[0023] Working principle: In use, this utility model pushes the movable base 1 to the top of the borehole at the required measurement depth. When the movable base 1 is pushed to the top of the borehole at the required measurement depth, the drive motor 9 is activated. When the drive motor 9 is activated, it drives the transmission gear 10 to rotate. When the transmission gear 10 rotates, it meshes with and drives the transmission gear ring 11. When the transmission gear ring 11 rotates, it drives the internal thread transmission tube 8 to rotate. When the internal thread transmission tube 8 rotates, the force generated by the threaded connection drives the lifting screw 12 up and down. The linear movement involves the lifting screw 12 moving downwards in a straight line, which in turn moves the measuring probe 16 downwards into the borehole. When the measuring probe 16 moves downwards into the borehole, the distance sensor at the lower end of the measuring probe 16 measures the distance from the front end of the lifting screw 12 to the bottom of the borehole. Laser ranging is used, which features high precision and fast response. The angle sensor measures the tilt angle of the lifting screw 12 within the borehole. By measuring the tilt angle and combining it with the extension length of the lifting screw 12, the actual depth of the borehole can be calculated accurately.
[0024] At the same time, the electric telescopic rod 7 is extended and retracted by controlling the opening. When the electric telescopic rod 7 extends and retracts, it will drive the swing arm 5 to swing back and forth through the support rod 6. When the swing arm 5 swings back and forth, it will drive the lifting screw 12 to swing back and forth in sync. When the lifting screw 12 swings back and forth, it will drive the measuring probe 16 to swing back and forth. Thus, the measuring probe 16 can measure the depth of the blast hole while facilitating the adjustment of the measuring angle of the measuring probe 16 by swinging back and forth.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] 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 device for measuring the depth of blast holes used in mining blasting, characterized in that: The system includes a movable base (1), a support frame (4) fixedly mounted on the rear side of the upper end of the movable base (1), a swing arm (5) rotatably connected to the upper end of the support frame (4) via a pin, a support rod (6) fixedly mounted on the rear end of the swing arm (5), an electric telescopic rod (7) rotatably connected to the rear side of the upper end of the movable base (1) via a bearing seat, an internally threaded transmission tube (8) rotatably connected to the front side of the upper end of the swing arm (5) via a rotating shaft, and a drive motor (9) fixedly mounted on the top end of the swing arm (5). A transmission gear (10) is fixedly installed on the lower drive shaft. A transmission gear ring (11) is meshed with the front end of the transmission gear (10). A lifting screw (12) is threadedly connected to the inner wall of the internal thread transmission tube (8). A connecting plate (13) is fixedly installed on the top of the lifting screw (12). Limiting slide rods (14) are fixedly installed on both sides of the connecting plate (13). A limiting slide tube (15) is fixedly installed through the front side of the upper end of the swing arm (5). A measuring probe (16) for measuring the depth of the blast hole is fixedly installed at the bottom of the lifting screw (12).
2. The device for measuring the depth of blast holes in mining blasting according to claim 1, characterized in that: The movable base (1) has four movable rollers (2) fixedly installed at the four corners of its lower end. The number of movable rollers (2) is four, which are symmetrically distributed at the four corners of the lower end of the movable base (1). The movable rollers (2) are made of lockable rollers.
3. The device for measuring the depth of blast holes in mining blasting according to claim 2, characterized in that: The mobile base (1) is fixedly installed with a power control cabinet (3) at its front end, and a mobile power supply is fixedly installed inside the power control cabinet (3).
4. The device for measuring the depth of blast holes in mining blasting according to claim 3, characterized in that: The upper end of the electric telescopic rod (7) is tilted backward, and the telescopic part of the upper end of the electric telescopic rod (7) is rotatably connected to the rear end of the support rod (6) by a pin.
5. The device for measuring the depth of blast holes in mining blasting according to claim 4, characterized in that: The transmission gear ring (11) is fixedly installed on the outer curved surface of the lower end of the internal thread transmission tube (8).
6. The device for measuring the depth of blast holes in mining blasting according to claim 5, characterized in that: There are two limiting slide rods (14), which are symmetrically distributed on both sides of the connecting plate (13). The lower end of the limiting slide rod (14) is attached to the inner wall of the limiting slide tube (15), and the bottom of the limiting slide rod (14) is fixedly installed on both sides of the upper end of the measuring probe (16).
7. The device for measuring the depth of blast holes in mining blasting according to claim 6, characterized in that: A laser distance sensor and an angle sensor are fixedly installed at the lower end of the measuring probe (16).