An adjustable leveling type gold mine sampling drilling machine and a working method thereof

Abstract

The application discloses a kind of adjustable flat gold mine sampling drilling machines and working methods thereof, belong to the field of drilling sampling, including frame and setting on frame lifting type sampling mechanism, the four corners of frame are provided with adjustable support leg, for adjusting the drilling angle of lifting type sampling mechanism;Adjustable support leg includes fixed seat fixed on frame and mobile seat vertically slidingly connected with fixed seat by lifting adjustment assembly, the bottom end of mobile seat is provided with moving wheel.The above-mentioned kind of adjustable flat gold mine sampling drilling machine and working method thereof can adapt to rugged terrain, realize vertical or directional accurate sampling, operation is stable, safe and has strong versatility.

Description

Technical Field

[0001] This invention relates to the field of drilling and sampling technology, and in particular to an adjustable leveling gold ore sampling drill and its working method. Background Technology

[0002] Sampling before gold mining is a core preliminary step in geological exploration and resource development. Precise sampling can optimize mining plan design, scientifically delineate mine boundaries, and rationally plan mining sequence, thereby achieving efficient utilization and maximum recovery of gold resources and avoiding the waste of resources by mining rich mines and abandoning poor mines from the source.

[0003] Sampling operations at gold mines in the field commonly face complex terrain conditions such as slopes and rugged terrain. On slopes, if the drilling platform is not effectively leveled, the drill rod cannot maintain a vertical downward drilling position, easily resulting in tilted drilling. The drill bit will traverse multiple horizontal strata at different depths, causing the collected samples to be mixed samples of soil and rock from different horizontal layers, completely destroying the original vertical profile structure of the strata, drastically impacting geological stratification studies, and directly rendering exploration data invalid. On uneven ground, it is difficult for the drilling rig to achieve precise leveling, and problems such as equipment sinking and tilting are prone to occur during operation. An unstable working foundation significantly increases the risk of the drilling rig (especially tall mast drilling rigs) overturning and slipping during drilling, posing a serious threat to the lives of on-site operators. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable leveling gold ore sampling drill and its working method, thereby solving the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides an adjustable leveling gold ore sampling drill, including a frame and a lifting sampling mechanism mounted on the frame. Adjustable support legs are provided at the four corners of the frame for adjusting the drilling angle of the lifting sampling mechanism. The adjustable support leg includes a fixed base fixed to the frame and a movable base that is vertically slidably connected to the fixed base via a lifting adjustment component. The bottom end of the movable base is provided with casters.

[0006] Preferably, the lifting adjustment assembly includes an adjustment knob, a helical gear set, and a vertical screw. The central adjustment shaft of the adjustment knob extends into the fixed base, and the central adjustment shaft is rotatably connected to the fixed base. The part of the central adjustment shaft extending into the fixed base is connected to the vertical screw via the helical gear set, and the vertical screw is rotatably mounted inside the movable base.

[0007] Preferably, a telescopic stabilizing component is further provided between the fixed base and the movable base. The telescopic stabilizing component includes two sets of magnet pairs arranged symmetrically on the axis. One set of magnet pairs includes two magnets that attract each other magnetically, and the other set of magnet pairs includes two magnets that repel each other magnetically. One magnet in the same pair of magnets is fixed to the fixed base, and the other pair of magnets is fixed to the movable base. This is used to generate unbalanced forces to increase the axial limit between the screw and the movable base.

[0008] Preferably, the lifting sampling mechanism includes a lifting motor fixed on the frame, a screw connected to the output end of the lifting motor, and a nut threaded on the screw. The nut is fixedly connected to one side of the lifting platform, and the other side of the lifting platform is vertically slidably connected to the frame. A sampling motor is fixed at the center of the lifting platform, and the output end of the sampling motor is fixedly connected to the drill bit.

[0009] Preferably, a Hall sensor is connected in series in the power supply circuit of the sampling motor. The Hall sensor is electrically connected to the input terminal of the microcontroller, and the output terminal of the microcontroller is electrically connected to the AC contactor. The AC contactor is connected in series in the power supply circuit of the sampling motor and the lifting motor, and is used to trigger the AC contactor to disconnect when the drill bit is stuck, so as to realize power failure protection.

[0010] Preferably, the input terminal of the microcontroller is also electrically connected to a keyboard for inputting the drilling speed.

[0011] A method for operating an adjustable-level gold ore sampling drill includes the following steps: S1. Drilling Angle Preset: Move the drilling rig to the gold mine sampling site. Based on the actual working conditions of the slope and rugged ground, independently adjust the adjustable support legs at the four corners of the frame: Rotate each adjustment knob, which drives the vertical screw to rotate through the helical gear set, driving the moving seat to rise and fall vertically relative to the fixed seat, realizing the individual control of the height of the four corners of the frame. After the angle is set, the two sets of magnets between the fixed seat and the moving seat form an unbalanced force, increasing the axial limiting friction between the vertical screw and the moving seat, and locking the adjustment position of the support legs. S2. Input of operating parameters: Input the target drilling speed via keyboard, and the microcontroller receives and confirms the parameter; S3. Sampling and drilling in leveling state: The microcontroller starts the lifting motor and the sampling motor. The lifting motor drives the screw to drive the lifting platform to descend at a constant speed. During this process, the sampling motor drives the drill bit to rotate and cut the rock and soil of the mineral layer, and completes the drilling and sampling at the preset angle. S4. Sampling Completed and Reset: After sampling is completed, the microcontroller controls the lifting motor to reverse, driving the lifting platform and drill bit to move upward and reset, completing a single gold ore sampling operation.

[0012] Preferably, in step S1, when vertical sampling is required, the four corner moving seats are adjusted to the same height to complete the horizontal leveling of the whole machine, so that the lifting sampling mechanism is kept horizontal and the drill bit is perpendicular to the working surface; when a specific angle of tilt sampling is required, the drilling angle of the lifting sampling mechanism is precisely set by adjusting the height difference of the four corner moving seats to complete the leveling and angle preset.

[0013] Preferably, in step S3, during the drilling process, a Hall sensor connected in series in the power supply circuit of the sampling motor monitors the operating current of the sampling motor in real time; when the drill bit jams and the current exceeds the set threshold, the microcontroller drives the AC contactor to disconnect, cutting off the power supply to the sampling motor and the lifting motor, thereby achieving overload power-off protection.

[0014] Therefore, the present invention employs the above-mentioned adjustable leveling gold ore sampling drill and its working method, which has the following beneficial effects: 1. The four support legs can be independently raised and lowered, which can keep the drilling direction vertical on rugged and sloping ground, and can also achieve drilling and sampling at a specific angle by means of the height difference of the support legs, thereby improving the accuracy of the sampling position; 2. The magnets inside the support legs can increase the friction between the screw and the moving seat, effectively preventing abnormal extension and retraction of the support legs caused by drilling rig vibration, and ensuring operational stability; 3. The outriggers are equipped with wheels at the bottom, which facilitates equipment transportation and reduces physical exertion during field operations.

[0015] 4. The control system with microcontroller as its core can set the drilling speed, and the Hall sensor, together with the AC contactor, can automatically cut off the power when the drill bit gets stuck, thus realizing motor overload protection. 5. The entire machine can be precisely leveled, providing a stable working foundation, which greatly reduces the risk of the drilling rig tipping over or slipping, and ensures the safety of operators.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an adjustable leveling gold ore sampling drill according to the present invention. Figure 2 This is a schematic diagram of the adjustable support leg of an adjustable flat gold ore sampling drill as described in this invention. Figure 3 This is a schematic diagram of the forces acting on the magnet pair of an adjustable gold ore sampling drill according to the present invention. Figure 4 The diagram shows an example of the tilt angle of an adjustable leveling gold ore sampling drill according to the present invention. (a) is a schematic diagram of a 20° drill bit entry angle, (b) is a schematic diagram of a 16° drill bit entry angle, (c) is a schematic diagram of a 12° drill bit entry angle, (d) is a schematic diagram of an 8° drill bit entry angle, (e) is a schematic diagram of a 4° drill bit entry angle, and (f) is a schematic diagram of a 0° (leveling) drill bit entry angle.

[0018] Figure Labels 1. Adjustable support legs; 11. Adjustment knob; 12. Magnet pair; 13. Helical gear set; 14. Screw; 15. Fixed base; 16. Moving base; 17. Moving wheels; 2. Frame; 3. Lifting motor; 4. Sampling motor; 5. Drill bit; 6. Microcontroller; 7. Lifting platform. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0020] It should be noted that the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as a process, method, system, product, or server that includes a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device.

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, an adjustable leveling gold ore sampling drill includes a frame 2 and a lifting sampling mechanism mounted on the frame 2. Adjustable support legs 1 are provided at each of the four corners of the frame 2 for adjusting the drilling angle of the lifting sampling mechanism. The adjustable support legs 1 include a fixed seat 15 fixed on the frame 2 and a movable seat 16 vertically slidably connected to the fixed seat 15 via a lifting adjustment component. The bottom end of the movable seat 16 is provided with a movable wheel 17.

[0023] The lifting and adjusting assembly includes an adjusting knob 11, a helical gear set 13, and a vertical screw 14. The central adjusting shaft of the adjusting knob 11 extends into the fixed base 15, and is vertically rotatably connected to the fixed base 15. The portion of the central adjusting shaft extending into the fixed base 15 is connected to the vertical screw 14 via the helical gear set 13. The vertical screw 14 is horizontally rotatably mounted inside the movable base 16. In this embodiment, the extension and retraction range of the adjustable support leg 1 is 0-60cm.

[0024] Table 1. Comparison of Adjustable Support Leg Height Difference and Drill Bit Entry Angle

[0025] A telescopic stabilizing assembly is also provided between the fixed base 15 and the movable base 16. The telescopic stabilizing assembly includes two sets of magnet pairs 12 arranged symmetrically on an axis. One set of magnet pairs 12 includes two magnets that attract each other magnetically, and the other set of magnet pairs 12 includes two magnets that repel each other magnetically. One magnet in the same set of magnet pairs 12 is fixed to the fixed base 15, and the other set of magnet pairs 12 is fixed to the movable base 16, which is used to generate unbalanced forces to increase the axial limit between the screw 14 and the movable base 16. Neodymium iron boron magnets are used in this embodiment.

[0026] The lifting sampling mechanism includes a lifting motor 3 fixed on the frame 2, a screw 14 connected to the output end of the lifting motor 3, and a nut threaded on the screw 14. The nut is fixedly connected to one side of the lifting platform 7, and the other side of the lifting platform 7 is vertically slidably connected to the frame 2. A sampling motor 4 is fixed at the center of the lifting platform 7, and the output end of the sampling motor 4 is fixedly connected to the drill bit 5.

[0027] A Hall sensor is connected in series in the power supply circuit of the sampling motor 4. The Hall sensor is electrically connected to the input terminal of the microcontroller 6. The output terminal of the microcontroller 6 is electrically connected to the AC contactor. The AC contactor is connected in series in the power supply circuit of the sampling motor 4 and the lifting motor 3. It is used to trigger the AC contactor to disconnect when the drill bit 5 is stuck, so as to realize power failure protection.

[0028] The inputs of the microcontroller 6 are also electrically connected to a keyboard for inputting the drilling speed.

[0029] In this embodiment, the microcontroller 6 is an Arduino UNO R3, the Hall sensor is an ACS712, the driver for the lifting motor 3 is a DM542, the lifting motor 3 is a 57HBP112AL4, the AC contactor is a CJ20-25, the driver for the sampling motor 4 is an HLP-SK180, and the sampling motor 4 is a YBX3-100L-2D.

[0030] It should be noted that the above electronic components are all mature products on the market. This embodiment only requires purchasing them and connecting them according to the instruction manual. No changes have been made to their circuit connection structure and principle, so they will not be described in detail here.

[0031] A method for operating an adjustable-level gold ore sampling drill includes the following steps: S1. Drilling Angle Preset: Move the drilling rig to the gold mine sampling site. Based on the actual working conditions of the slope and rugged ground, independently adjust the adjustable support legs 1 at the four corners of the frame 2: Rotate each adjustment knob 11, which drives the vertical screw 14 to rotate through the helical gear set 13, driving the moving seat 16 to rise and fall vertically relative to the fixed seat 15, realizing the individual control of the height of the four corners of the frame 2. After the angle is set, the two sets of magnets 12 between the fixed seat 15 and the moving seat 16 form an unbalanced force, increasing the axial limiting friction between the vertical screw 14 and the moving seat 16, and locking the adjustment position of the support legs; S2. Input of operating parameters: Input the target drilling speed via keyboard, and microcontroller 6 receives and confirms the parameter; S3. Sampling and drilling under leveling conditions: The microcontroller 6 starts the lifting motor 3 and the sampling motor 4. The lifting motor 3 drives the screw 14 to drive the lifting platform 7 to descend at a constant speed. During this process, the sampling motor 4 drives the drill bit 5 to rotate and cut the rock and soil of the mineral layer, and completes the drilling and sampling under the preset angle. S4. Sampling Completed and Reset: After sampling is completed, the microcontroller 6 controls the lifting motor 3 to reverse, driving the lifting platform 7 and the drill bit 5 to move upward and reset, completing a single gold ore sampling operation.

[0032] In step S1, when vertical sampling is required, the four corner moving seats 16 are adjusted to the same height to complete the horizontal leveling of the whole machine, so that the lifting sampling mechanism is kept horizontal and the drill bit 5 is perpendicular to the working surface; when a specific angle of tilt sampling is required, the drilling angle of the lifting sampling mechanism is precisely set by adjusting the height difference of the four corner moving seats 16, and the leveling and angle preset are completed.

[0033] In step S3, during the drilling process, the Hall sensor connected in series in the power supply circuit of the sampling motor 4 monitors the operating current of the sampling motor 4 in real time; when the drill bit 5 gets stuck and the current exceeds the set threshold, the microcontroller 6 drives the AC contactor to disconnect, cutting off the power supply to the sampling motor 4 and the lifting motor 3, thereby achieving overload power-off protection.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. An adjustable-level gold ore sampling drill, comprising a frame and a lifting sampling mechanism mounted on the frame, characterized in that: Adjustable support legs are provided at all four corners of the frame to adjust the drilling angle of the lifting sampling mechanism. The adjustable support leg includes a fixed base fixed to the frame and a movable base that is vertically slidably connected to the fixed base via a lifting adjustment component. The bottom end of the movable base is provided with a movable wheel. The lifting adjustment assembly includes an adjustment knob, a helical gear set, and a vertical screw. The central adjustment shaft of the adjustment knob extends into the fixed base, and the central adjustment shaft is rotatably connected to the fixed base. The part of the central adjustment shaft extending into the fixed base is connected to the vertical screw via the helical gear set, and the vertical screw is rotatably mounted inside the movable base. A telescopic stabilizing assembly is also provided between the fixed base and the movable base. The telescopic stabilizing assembly includes two sets of magnet pairs arranged symmetrically on the axis. One set of magnet pairs includes two magnets that attract each other magnetically, and the other set of magnet pairs includes two magnets that repel each other magnetically. One magnet in the same pair of magnets is fixed to the fixed base, and the other pair of magnets is fixed to the movable base. This is used to generate unbalanced forces to increase the axial limit between the vertical screw and the movable base.

2. The adjustable leveling gold ore sampling drill according to claim 1, characterized in that: The lifting sampling mechanism includes a lifting motor fixed on the frame, a vertical screw connected to the output end of the lifting motor, and a nut threaded on the vertical screw. The nut is fixedly connected to one side of the lifting platform, and the other side of the lifting platform is vertically slidably connected to the frame. A sampling motor is fixed at the center of the lifting platform, and the output end of the sampling motor is fixedly connected to the drill bit.

3. The adjustable leveling gold ore sampling drill according to claim 2, characterized in that: A Hall sensor is connected in series in the power supply circuit of the sampling motor. The Hall sensor is electrically connected to the input terminal of the microcontroller. The output terminal of the microcontroller is electrically connected to the AC contactor. The AC contactor is connected in series in the power supply circuit of the sampling motor and the lifting motor. It is used to trigger the AC contactor to disconnect when the drill bit is stuck, so as to realize power failure protection.

4. The adjustable leveling gold ore sampling drill according to claim 3, characterized in that: The microcontroller's inputs are also electrically connected to a keyboard used to input the drilling speed.

5. The working method of an adjustable-level gold ore sampling drill as described in claim 4, characterized in that: Includes the following steps: S1. Drilling Angle Preset: Move the drilling rig to the gold mine sampling site. Based on the actual working conditions of the slope and rugged ground, independently adjust the adjustable support legs at the four corners of the frame: Rotate each adjustment knob, which drives the vertical screw to rotate through the helical gear set, driving the moving seat to rise and fall vertically relative to the fixed seat, realizing the individual control of the height of the four corners of the frame. After the angle is set, the two sets of magnets between the fixed seat and the moving seat form an unbalanced force, increasing the axial limiting friction between the vertical screw and the moving seat, and locking the adjustment position of the support legs. S2. Input of operating parameters: Input the target drilling speed via keyboard, and the microcontroller receives and confirms the parameter; S3. Sampling and drilling in leveling state: The microcontroller starts the lifting motor and the sampling motor. The lifting motor drives the vertical screw to drive the lifting platform to descend at a constant speed. During this process, the sampling motor drives the drill bit to rotate and cut the rock and soil of the mineral layer, and completes the drilling and sampling at the preset angle. S4. Sampling Completed and Reset: After sampling is completed, the microcontroller controls the lifting motor to reverse, driving the lifting platform and drill bit to move upward and reset, completing a single gold ore sampling operation.

6. The working method of an adjustable leveling gold ore sampling drill according to claim 5, characterized in that: In step S1, when vertical sampling is required, the four corner moving seats are adjusted to the same height to complete the horizontal leveling of the whole machine, so that the lifting sampling mechanism is kept horizontal and the drill bit is perpendicular to the working surface; when a specific angle of tilt sampling is required, the drilling angle of the lifting sampling mechanism is precisely set by adjusting the height difference of the four corner moving seats to complete the leveling and angle preset.

7. The working method of an adjustable leveling gold ore sampling drill according to claim 5, characterized in that: In step S3, during the drilling process, the Hall sensor connected in series in the power supply circuit of the sampling motor monitors the operating current of the sampling motor in real time; when the drill bit jams and the current exceeds the set threshold, the microcontroller drives the AC contactor to disconnect, cutting off the power supply to the sampling motor and the lifting motor, thereby achieving overload power-off protection.

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