An intelligent sampling device and method with a telescopic drill bit and torque self-adaptive function

Abstract

The application discloses a kind of intelligent sampling device and method with telescopic drill head and torque adaptive function, and the application relates to sampling technical field.The intelligent sampling device and method with telescopic drill head and torque adaptive function, including vehicle body, sampling mechanism, sampling mechanism includes telescopic drive mechanism and sampling cylinder, the inside surface of sampling cylinder is provided with first helical groove, the top end of telescopic drive mechanism is hingedly installed with cylinder top hat, the center of cylinder top hat is installed with sampler, the surface of cylinder top hat is installed with bottom sensing discharge unit, sampler includes shaft and drive unit, the outer circular surface of shaft is fixedly installed with helical sampling main blade, detachable fixed mounting is installed with auxiliary blade at the edge of helical sampling main blade surface, torque detection unit is installed between the top end of shaft and the output end of drive unit, reaches the purpose of intelligent sampling, can adapt to torque, and uses lift type, not prone to material jamming, safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of sampling technology, and in particular to an intelligent sampling device and method with a retractable drill bit and torque adaptive function. Background Technology

[0002] A spiral sampler is a mechanical device used to obtain representative samples from solid materials such as coal and minerals. It utilizes rotating spiral blades to drill into and vertically transport the material, achieving continuous sampling at a specified depth. Spiral samplers are widely used in coal sample preparation processes in thermal power plants, coking plants, and steel plants, as well as in commercial sampling processes for coal sold from coal mines and at port terminals.

[0003] For example, a coal sampling device for judging coal quality, as disclosed in Chinese Patent Publication No. CN221115637U, includes a fixed frame. A first support plate and a second support plate are positioned above the fixed frame. A sampling mechanism is located in the middle of the first and second support plates. The sampling mechanism includes a movable block, with a sampling cylinder fixedly connected to the surface of the movable block. A threaded push rod is located inside the sampling cylinder, and a threaded rod is threadedly connected to the middle of the movable block. A material guiding mechanism is positioned above the fixed frame, including a first sliding chute and a second sliding chute. The sampling mechanism is fixed by the first and second support plates. The threaded push rod transports coal upwards through the sampling cylinder, and the threaded rod drives the movable block to move laterally, allowing the sampling cylinder to collect coal from different positions on the conveyor belt surface. The coal collected by the sampling cylinder is transferred out through the first and second sliding chute. This device allows sampling of coal at different positions above the conveyor belt.

[0004] Existing technical documents describe a method of sampling coal by rotating a threaded push rod inside a sampling cylinder. However, this design suffers from a sharp increase in drill rod torque when encountering hard, large pieces of coal or gangue. Typically, the system relies solely on the tripping of the electrical system's circuit breaker to stop the operation, resulting in a crude and inefficient handling of torque overload. This passive protection method requires manual on-site reset, a cumbersome process. Furthermore, frequent start-stop cycles impact the motor and power grid, affecting the equipment's lifespan. Additionally, the integrated sampling spiral blades experience severe wear over time, leading to the random falling of sampled coal and reduced sampling efficiency. Summary of the Invention

[0005] To solve the above technical problems, the present invention is implemented through the following technical solution: A smart sampling device with a retractable drill bit and torque adaptive function includes: The vehicle body, and the intelligent controller fixedly installed on the top side of the vehicle body; The sampling mechanism includes a retractable drive mechanism and a sampling cylinder. The sampling cylinder is fixedly installed in the middle of the top of the vehicle body. The retractable drive mechanism is installed on the top of the vehicle body and close to the sampling cylinder. A first spiral groove is opened on the inner side of the sampling cylinder. A cylindrical top cap is hinged to the top of the retractable drive mechanism. A sampler is installed at the center of the cylindrical top cap. A bottom-sensing discharge unit is installed on the surface of the cylindrical top cap. The sampler includes a rotating shaft and a drive unit. The top of the outer circular surface of the rotating shaft is rotatably mounted to the center of a cylindrical cap via a bushing. The drive unit is mounted on the top of the cylindrical cap. A helical sampling main blade is fixedly mounted on the outer circular surface of the rotating shaft. A secondary blade is detachably fixedly mounted on the edge of the surface of the helical sampling main blade. A second helical groove is formed on the helical surface on the outer side of the helical sampling main blade. A torque detection unit is installed between the top of the rotating shaft and the output end of the drive unit. A conical tip is fixedly mounted on the bottom end of the rotating shaft. A powerful magnetic ball is fixedly mounted on the outer side of the secondary blade. The rotation of the main and auxiliary blades of the spiral sampling system lifts the material upwards. The material comes into contact with the first spiral grooves evenly distributed on the inner side of the sampling cylinder. The sharp spiral curves at the edges of the first spiral grooves reduce the pressure and, under the action of the extrusion force, cut the edges of large pieces of material into smaller pieces, thus reducing the risk of blockage and facilitating the lifting of the material. Meanwhile, the auxiliary blades are detachably installed on the edge of the main spiral sampling blades. When the auxiliary blades are worn during use, only the auxiliary blades need to be replaced, without replacing the entire blade. Using a rotating shaft, the conical tip, spiral sampling main blade, and auxiliary blade are driven to extend from the sampling tube, first touching the sampling surface, and then retracting before touching the bottom of the vehicle to avoid obstacles. Through the combination of a retractable drive mechanism, mechanical rebound, and sensors, intelligent sensing and protection of the sampling bottom plate are achieved, greatly reducing the risk of damage to the bottom of the vehicle. An auxiliary component is installed on the surface of the sampling tube, and a powder suction mechanism is installed between the surface of the cylindrical cap and the top of the vehicle body.

[0006] Furthermore, the retractable drive mechanism is used to drive the sampler to extend and retract along its axial direction, and the retractable drive mechanism is a hydraulic cylinder; The bottom-sensing discharge unit is used to sample the contact status between the sampler and the bottom of the material in real time and generate a bottom-sensing signal. The torque detection unit is used to detect the load torque of the drive unit that drives the rotation of the shaft on the drive sampler in real time. The drive unit is a servo motor, and the torque detection unit is a torque sensor that is integrated and electrically connected to the servo motor. The intelligent controller is electrically connected to the bottom-sensing discharge unit, torque detection unit, retractable drive mechanism, and drive unit.

[0007] Furthermore, the sampling tube is installed vertically, the first spiral groove is evenly distributed on the inner side of the sampling tube, the cylindrical top cap is installed directly above the sampling tube, and there are four retractable driving mechanisms, which are evenly distributed along the circumference of the cylindrical top cap.

[0008] By having the tip of the cone-shaped nozzle contact the material, the pressure can be reduced, which helps to crush large pieces of material. As the rotating shaft drives the main and auxiliary blades of the spiral sampling tube to rotate, the material is placed inside the sampling tube. With the continuous operation of the main and auxiliary blades driven by the rotating shaft, the material is lifted and moves upward into the inside of the top cap of the cylinder. The material will roll down into the discharge pipe on the bottom-contact sensing discharge unit for sampling. At the same time, a pressure sensor is installed in the discharge pipe to detect the bottom-contact signal of the material in the discharge pipe in a timely manner.

[0009] Furthermore, the secondary blades are spiral-shaped, and the axis of the rotating shaft coincides with the central axis of the cylindrical top cap and the central axis of the sampling tube.

[0010] Furthermore, the auxiliary component includes a semi-circular outer shell. The side of the surface of the semi-circular outer shell is fixedly installed to the bottom of the outer circular surface of the sampling tube by screws. A support spring is fixedly installed on the inner wall of the semi-circular outer shell. A rectangular notch is opened in the middle of the surface of the support spring. A striking magnetic block is fixedly connected to the end of the support spring away from the inner wall of the semi-circular outer shell. With the rotation of the main and auxiliary blades of the spiral sampling, not only can the material be lifted, but the powerful magnetic ball will also rotate with the auxiliary blade. As the powerful magnetic ball rotates in a circle, it meets the striking magnetic block. Since the powerful magnetic ball and the striking magnetic block are of the same magnetic pole, they will generate a repulsive magnetic force. This causes the striking magnetic block to be pushed by the repulsive magnetic force, and the support spring is elastically deformed by the pushing force. When the powerful magnetic ball moves away from the striking magnetic block, the repulsive magnetic force disappears, and under the elastic force of the support spring, the striking magnetic block strikes the surface of the sampling tube, causing the sampling tube to vibrate. Under the action of vibration, the particulate material in the sampling tube is less likely to accumulate or get stuck.

[0011] Furthermore, there are four semi-circular shells, and the four semi-circular shells are evenly distributed on the bottom of the outer circular surface of the sampling tube, and the side of the striking magnetic block away from the supporting spring is in contact with the outer circular surface of the sampling tube.

[0012] Furthermore, the powder suction mechanism includes a powder filter and a conical connecting cylinder. The air inlet of the powder filter is fixedly installed on the surface of the cylindrical top cap, and the conical connecting cylinder is fixedly installed on the side of the top of the vehicle body. A suction fan is fixedly installed on the top of the powder filter. A flexible hose connects the air inlet of the suction fan and the air outlet of the conical connecting cylinder. A support spring is fixedly installed on the inner side of the conical connecting cylinder. A sealing cone is fixedly connected to the middle of the surface of the support spring. A sealing gasket is fixedly connected to the conical surface of the sealing cone. The suction fan draws air from the filter. Force, and under the elastic support of the support spring, causes the end cap cone to be sucked up, moving it closer to the hose. The support spring undergoes elastic deformation, opening the air inlet of the cone connecting cylinder and drawing in the air inside the cylindrical top cap. The airflow carries the material dust from the cylindrical top cap and sampling tube, and under the guidance of the first and second spiral grooves, the material dust flows smoothly with the airflow. With the transport of the hose, the material dust enters the interior of the filter, allowing for material dust recovery and reducing resource waste.

[0013] Furthermore, the suction fan is electrically connected to the intelligent controller, and the air outlet of the suction fan is connected to the top of the powder filter. The sealing gasket is made of rubber. When the suction fan stops working, the suction force on the sealing cone disappears, and under the elastic force of the support spring, the sealing cone moves the sealing gasket in the opposite direction to reset. By blocking the air inlet of the cone connecting cylinder with the sealing cone, and the sealing gasket adhering to the inner wall of the air inlet of the cone connecting cylinder, a seal is formed, preventing the backflow of material dust.

[0014] A smart sampling method with retractable drill bit and torque adaptive function includes the following steps: Step 1: Control the retractable drive mechanism to drive the cylindrical top cap to move downward, so that the cylindrical top cap drives the sampler to move downward and extend, and contact the material through the conical tip at the bottom of the rotating shaft; Step 2: Start the control drive unit. The rotation of the servo motor output drives the rotating shaft to rotate. The rotating shaft will drive the conical tip, the spiral sampling main blade and the auxiliary blade to rotate together to perform sampling. Step 3: Monitor the bottom-touching signal of the bottom-touching sensing and discharging unit in real time. The bottom-touching sensing and discharging unit will transmit the bottom-touching signal to the intelligent controller in the form of an electrical signal. The intelligent controller will receive and process the signal. Step 4: When a bottoming signal is detected, the bottoming protection step is executed. The retractable drive mechanism is controlled to retract the conical tip, the bottom of the spiral sampling main blade, and the bottom of the secondary blade and stop their rotation. Step 5: Monitor the torque signal of the torque detection unit in real time. The bottom-feeding sensing discharge unit will transmit the torque signal to the intelligent controller in the form of an electrical signal. The intelligent controller will receive and process the signal. Step 6: When the torque signal exceeds the first preset threshold, the torque adaptive step is executed, controlling the output end of the servo motor to stop rotating, causing the shaft to stop rotating and retract, and then restarting the rotation and extending again.

[0015] After the equipment is started, it drills normally while monitoring torque and bottoming signals. If bottoming is detected, the drill is lifted, and the torque is checked. If the torque is also checked, the drill is "retracted-rotated-re-push forward" is executed. The safety threshold is checked repeatedly. Through the torque monitoring and preset control strategy of the servo system, intelligent and flexible handling of "stuck drill" and "large coal" conditions is achieved, which improves the sampling success rate and efficiency, avoids unplanned shutdowns caused by overcurrent protection tripping, and the entire sampling process can be automated in a loop, reducing dependence on operators. The flexible control strategy reduces the impact on mechanical structure and electrical system and extends the life of key components.

[0016] Furthermore, in the torque adaptive step, if the torque signal continuously exceeds the first preset threshold but does not exceed the second preset threshold, the "retract-rotate-extend" cycle is repeated until the torque signal is lower than the first preset threshold and the preset number of cycles is reached. If the torque signal exceeds the second preset threshold, the entire device is controlled to stop operating and an alarm is triggered.

[0017] The beneficial effects of the technical solution provided by this invention include: 1. At the start of sampling, under the connection of the cylindrical top cap, the conical tip, the spiral sampling main blade and the auxiliary blade are driven by the rotating shaft to extend out of the sampling tube, first touching the sampling surface, and then retracting before touching the bottom of the vehicle to avoid obstacles under the vehicle. Through the combination of the retractable drive mechanism, mechanical rebound and sensor, intelligent perception and protection of the sampling bottom plate are realized, which greatly reduces the risk of damage to the bottom of the vehicle.

[0018] 2. After starting the equipment, drilling proceeds normally while monitoring torque and bottoming signals. If bottoming is detected, the drill is lifted, and the torque is assessed. If the torque is also assessed, a "retraction-rotation-re-advance" process is executed, continuously checking safety thresholds. Through torque monitoring and preset control strategies of the servo system, intelligent and flexible handling of "stuck drill" and "large coal" conditions is achieved, improving sampling success rate and efficiency, and avoiding unplanned shutdowns caused by overcurrent protection tripping. The entire sampling process can be automated and cyclical, reducing reliance on operators. The flexible control strategy reduces the impact on mechanical structures and electrical systems, extending the lifespan of key components.

[0019] Third, by having the tip of the cone-shaped nozzle contact the material, the pressure can be reduced, which helps to crush large pieces of material. As the rotating shaft drives the main and auxiliary blades of the spiral sampling tube to rotate, the material is placed inside the sampling tube. With the continuous operation of the main and auxiliary blades of the spiral sampling tube driven by the rotating shaft, the material is lifted and enters the inside of the top cap of the cylinder. The material will roll down into the discharge pipe on the bottom-touching sensing discharge unit for sampling. At the same time, a pressure sensor is installed in the discharge pipe to detect the bottom-touching signal of the material in the discharge pipe in a timely manner.

[0020] Fourth, as the main and auxiliary blades of the spiral sampling system rotate, the material is lifted upwards. The material comes into contact with the first spiral grooves evenly distributed on the inner side of the sampling cylinder. The sharp spiral curves at the edges of the first spiral grooves reduce the pressure and, under the action of the squeezing force, the edges of large pieces of material are cut into smaller pieces, thus reducing the risk of blockage and facilitating the lifting of the material. Meanwhile, the auxiliary blades are detachably installed on the edge of the main spiral sampling blades. When the auxiliary blades are worn during use, only the auxiliary blades need to be replaced, without replacing the entire blade.

[0021] 5. When the powerful magnetic ball rotates in a circle, it encounters the striking magnetic block. Since the powerful magnetic ball and the striking magnetic block are of the same magnetic pole, they will generate a repulsive magnetic force. This repulsive magnetic force will push the striking magnetic block, and the supporting spring will undergo elastic deformation under the pushing force. When the powerful magnetic ball moves away from the striking magnetic block, the repulsive magnetic force will disappear. Under the elastic force of the supporting spring, the striking magnetic block will strike the surface of the sampling tube, causing the sampling tube to vibrate. Under the action of vibration, the particulate material in the sampling tube is less likely to accumulate or get stuck.

[0022] 6. Utilizing the suction force of the fan and supported by the elasticity of the support spring, the end cap cone is drawn in, moving towards the side closer to the hose. The support spring deforms elastically, opening the air inlet of the cone-shaped connecting cylinder and drawing in the air from the top cap of the cylinder. The airflow carries the material dust from the top cap and sampling tube. Simultaneously, guided by the first and second spiral grooves, the material dust flows smoothly with the airflow and is transported through the hose into the interior of the filter, allowing for material dust recovery and reducing resource waste.

[0023] 7. When the suction force on the sealing cone disappears and the elastic force of the support spring strip causes the sealing cone to move in the opposite direction to reset, the sealing cone blocks the air inlet of the cone head connecting cylinder, and the sealing gasket adheres to the inner wall of the air inlet of the cone head connecting cylinder, thus forming a seal and preventing the backflow of material dust. Attached Figure Description

[0024] Figure 1 A block diagram of an intelligent sampling method with a retractable drill bit and torque adaptive function provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of an intelligent sampling device with a retractable drill bit and torque adaptive function provided in an embodiment of the present invention; Figure 3 This is a bottom view structural diagram of an intelligent sampling device with a retractable drill bit and torque adaptive function provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure between the sampling mechanism and the vehicle body provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the connection structure between the sampler and the cylindrical top cap provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the overall structure of the sampler provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the connection structure between the auxiliary component and the sampling cylinder provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the internal structure of the semi-circular outer shell cross-section provided in an embodiment of the present invention; Figure 9 Provided for embodiments of the present invention Figure 8 Enlarged view of a portion of point A in the middle; Figure 10 This is a schematic diagram of the connection structure between the powder suction mechanism, the cylindrical top cap, and the vehicle body provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the internal structure of the conical connecting cylinder cross-section provided in an embodiment of the present invention.

[0025] In the diagram: 1. Vehicle body; 2. Intelligent controller; 3. Sampling mechanism; 4. Auxiliary components; 5. Powder suction mechanism; 31. Telescopic drive mechanism; 32. Sampling cylinder; 33. First spiral groove; 34. Cylindrical top cap; 35. Sampler; 36. Bottom-sensing discharge unit; 351. Rotating shaft; 352. Drive unit; 353. Spiral sampling main blade; 354. Secondary blade; 355. Second spiral groove; 356. Torque detection unit; 357. Conical tip; 358. Powerful magnetic ball; 41. Semi-circular outer shell; 42. Support spring; 43. Rectangular notch; 44. Striking magnetic block; 51. Powder filter; 52. Conical connecting cylinder; 53. Fan; 54. Hose; 55. Support spring; 56. End-sealing cone block; 57. Sealing gasket. Detailed Implementation

[0026] Example 1, see Figures 1-6 A technical solution is provided: A smart sampling device with a retractable drill bit and torque adaptive function includes: Vehicle body 1, and intelligent controller 2 fixedly installed on the top side of vehicle body 1; The sampling mechanism 3 includes a retractable drive mechanism 31 and a sampling cylinder 32. The sampling cylinder 32 is fixedly installed at the middle of the top of the vehicle body 1. The retractable drive mechanism 31 is installed on the top of the vehicle body 1 and close to the sampling cylinder 32. A first spiral groove 33 is opened on the inner side of the sampling cylinder 32. A cylindrical top cap 34 is hinged to the top of the retractable drive mechanism 31. A sampler 35 is installed at the center of the cylindrical top cap 34. A bottom-sensing discharge unit 36 ​​is installed on the surface of the cylindrical top cap 34. The sampling tube 32 is installed vertically, the first spiral groove 33 is evenly distributed on the inner side of the sampling tube 32, the cylindrical top cap 34 is installed directly above the sampling tube 32, and there are four telescopic drive mechanisms 31, which are evenly distributed along the circumference of the cylindrical top cap 34. The sampler 35 includes a rotating shaft 351 and a drive unit 352. The top of the outer circular surface of the rotating shaft 351 is rotatably mounted to the center of the cylindrical top cap 34 via a bushing. The drive unit 352 is mounted on the top of the cylindrical top cap 34. A spiral sampling main blade 353 is fixedly mounted on the outer circular surface of the rotating shaft 351. A secondary blade 354 is detachably fixedly mounted on the edge of the surface of the spiral sampling main blade 353. A second spiral groove 355 is formed on the spiral surface on the outer side of the spiral sampling main blade 353. A torque detection unit 356 is installed between the top end of the rotating shaft 351 and the output end of the drive unit 352. A conical tip 357 is fixedly mounted on the bottom end of the rotating shaft 351. A strong... The magnetic ball 358, with the rotation of the spiral sampling main blade 353 and the auxiliary blade 354, lifts the material upward. The material comes into contact with the first spiral groove 33, which is evenly distributed on the inner side of the sampling cylinder 32. The sharp spiral curve at the edge of the first spiral groove 33 can reduce the pressure and, under the action of the extrusion force, cut the edges of large pieces of material into small pieces, thus reducing the risk of clogging and helping to lift the material. At the same time, the auxiliary blade 354 is detachably installed on the edge of the spiral sampling main blade 353. When the auxiliary blade 354 is worn during use, only the auxiliary blade 354 needs to be replaced, without replacing the entire blade. The retractable drive mechanism 31 is controlled by the intelligent controller 2. When sampling begins, the conical tip 357, the spiral sampling main blade 353 and the auxiliary blade 354 are driven to extend from the sampling tube 32 by the rotating shaft 351 under the connection of the cylindrical top cap 34. They first touch the sampling surface and then retract before touching the bottom of the vehicle to avoid obstacles under the vehicle. Through the combination of the retractable drive mechanism, mechanical rebound and sensor, intelligent perception and protection of the sampling bottom plate are realized, which greatly reduces the risk of damage to the bottom of the vehicle. The secondary blade 354 is spiral-shaped, and the axis of the rotating shaft 351 coincides with the central axis of the cylindrical top cap 34 and the central axis of the sampling tube 32; By having the tip of the conical tip 357 contact the material, the pressure can be reduced, which helps to crush large pieces of material. As the rotating shaft 351 drives the spiral sampling main blade 353 and auxiliary blade 354 to rotate, the material is placed inside the sampling cylinder 32. With the continuous operation of the spiral sampling main blade 353 and auxiliary blade 354 driven by the rotating shaft 351, the material is lifted and enters the interior of the cylindrical top cap 34. The material will roll into the discharge pipe on the bottom-touching sensing discharge unit 36 ​​for sampling. At the same time, a pressure sensor is installed in the discharge pipe to detect the bottom-touching signal of the material in the discharge pipe in a timely manner.

[0027] The telescopic drive mechanism 31 is used to drive the sampler 35 to extend and retract along its axial direction. The telescopic drive mechanism 31 is a hydraulic cylinder. The bottom-sensing discharge unit 36 ​​is used to sample the contact status between the sampler 35 and the bottom of the material in real time and generate a bottom-sensing signal. The torque detection unit 356 is used to detect in real time the load torque of the drive unit 352 that drives the rotation of the shaft 351 on the sampler 35. The drive unit 352 is a servo motor, and the torque detection unit 356 is a torque sensor that is integrated and electrically connected to the servo motor. The intelligent controller 2 is electrically connected to the bottom-sensing discharge unit 36, the torque detection unit 356, the retractable drive mechanism 31, and the drive unit 352.

[0028] The intelligent controller is configured as follows: a. Upon receiving a bottoming signal, control the retractable drive mechanism to retract the sampler 35 and control the drive unit to stop rotating; b. Receive the torque signal from the torque detection unit. When the torque signal exceeds the first preset threshold, control the drive unit to stop rotating and control the retractable drive mechanism to drive the sampler 35 to retract. c. Control the drive unit to restart rotation, and control the retractable drive mechanism again to extend the sampling head to continue sampling.

[0029] A smart sampling method with retractable drill bit and torque adaptive function includes the following steps: Step 1: Control the retractable drive mechanism 31 to drive the cylindrical top cap 34 to move downward, so that the cylindrical top cap 34 drives the sampler 35 to move downward and extend, and contact the material through the conical tip 357 at the bottom of the rotating shaft 351. Step 2: The control drive unit 352 is started. The rotation of the servo motor output drives the rotating shaft 351 to rotate. The rotating shaft 351 will drive the conical tip 357, the spiral sampling main blade 353 and the auxiliary blade 354 to rotate together to perform sampling. Step 3: Monitor the bottom-touching signal of the bottom-touching sensing and discharging unit 36 ​​in real time. The bottom-touching sensing and discharging unit 36 ​​will transmit the bottom-touching signal to the intelligent controller 2 in the form of an electrical signal. The intelligent controller 2 will receive and process the signal. Step 4: When a bottoming signal is detected, the bottoming protection step is executed. The retractable drive mechanism 31 is controlled to retract the tapered tip 357, the bottom of the spiral sampling main blade 353 and the bottom of the secondary blade 354 and stop their rotation. Step 5: Monitor the torque signal of the torque detection unit 356 in real time. The bottom-sensing discharge unit 36 ​​will transmit the torque signal to the intelligent controller 2 in the form of an electrical signal. The intelligent controller 2 will receive and process the signal. Step 6: When the torque signal exceeds the first preset threshold, the torque adaptive step is executed, controlling the output end of the servo motor to stop rotating, so that the shaft 351 stops rotating and retracts, and then restarts rotation and extends again.

[0030] After the equipment is started, it drills normally while monitoring torque and bottoming signals. If bottoming is detected, the drill is lifted, and the torque is checked. If the torque is also checked, the drill is "retracted-rotated-re-push forward" is executed. The safety threshold is checked repeatedly. Through the torque monitoring and preset control strategy of the servo system, intelligent and flexible handling of "stuck drill" and "large coal" conditions is achieved, which improves the sampling success rate and efficiency, avoids unplanned shutdowns caused by overcurrent protection tripping, and the entire sampling process can be automated in a loop, reducing dependence on operators. The flexible control strategy reduces the impact on mechanical structure and electrical system and extends the life of key components.

[0031] In the torque adaptive step, if the torque signal continuously exceeds the first preset threshold but does not exceed the second preset threshold, the "retract-rotate-extend" cycle is repeated until the torque signal is lower than the first preset threshold and the preset number of cycles is reached. If the torque signal exceeds the second preset threshold, the entire device is controlled to stop operating and an alarm is triggered.

[0032] Example 2, based on Example 1, see [link / reference] Figures 1 to 9A technical solution is provided: An auxiliary component 4 is mounted on the surface of the sampling tube 32; The auxiliary component 4 includes a semi-circular outer shell 41. The side of the surface of the semi-circular outer shell 41 is fixedly installed to the bottom of the outer circular surface of the sampling tube 32 by screws. A support spring 42 is fixedly installed on the inner wall of the semi-circular outer shell 41. A rectangular notch 43 is opened in the middle of the surface of the support spring 42. The rectangular notch 43 makes the middle of the surface of the support spring 42 hollow, which facilitates the elastic deformation of the support spring 42. A striking magnetic block 44 is fixedly connected to one end of the support spring 42 away from the inner wall of the semi-circular outer shell 41.

[0033] As the main blade 353 and the auxiliary blade 354 of the spiral sampling mechanism rotate, not only can the material be lifted, but the powerful magnetic ball 358 also rotates with the auxiliary blade 354. Through the circular rotation of the powerful magnetic ball 358, the powerful magnetic ball 358 meets the striking magnetic block 44. Since the powerful magnetic ball 358 and the striking magnetic block 44 are of the same magnetic pole, they will generate a repulsive magnetic force, which will push the striking magnetic block 44. The supporting spring 42 will be elastically deformed by the pushing force. When the powerful magnetic ball 358 moves away from the striking magnetic block 44, the repulsive magnetic force disappears, and under the elastic force of the supporting spring 42, the striking magnetic block 44 will strike the surface of the sampling cylinder 32, causing the sampling cylinder 32 to vibrate. Under the action of vibration, the particulate material in the sampling cylinder 32 is less likely to accumulate or get stuck.

[0034] There are four semi-circular shells 41, and the four semi-circular shells 41 are evenly distributed on the bottom of the outer circular surface of the sampling tube 32. The side of the striking magnetic block 44 away from the supporting spring 42 is in contact with the outer circular surface of the sampling tube 32.

[0035] Example 3, based on Examples 1 and 2, see below. Figures 1 to 11 A technical solution is provided: A powder suction mechanism 5 is installed between the surface of the cylindrical top cap 34 and the top of the vehicle body 1; The powder suction mechanism 5 includes a powder filter 51 and a conical connecting cylinder 52. The air inlet of the powder filter 51 is fixedly installed on the surface of the cylindrical top cap 34. The conical connecting cylinder 52 is fixedly installed on the side of the top of the vehicle body 1. A suction fan 53 is fixedly installed on the top of the powder filter 51. A flexible hose 54 connects the air inlet of the suction fan 53 and the air outlet of the conical connecting cylinder 52. A support spring strip 55 is fixedly installed on the inner side of the conical connecting cylinder 52. A sealing cone block 56 is fixedly connected to the middle of the surface of the support spring strip 55. A sealing gasket 57 is fixedly connected to the conical surface on the outer side of the sealing cone block 56. By retracting the telescopic end of the telescopic drive mechanism 31, a downward pulling force can be applied to the cylindrical top cap 34. The cylindrical top cap 34 covers the top of the sampling cylinder 32 and is intelligent. The controller 2 controls the suction fan 53, turning it on to operate. Utilizing the suction force of the suction fan 53, and supported by the elasticity of the support spring strip 55, the end cap cone 56 is drawn in, moving towards the side closer to the hose 54. Simultaneously, the support spring strip 55 undergoes elastic deformation, opening the air inlet of the cone-shaped connecting cylinder 52 and drawing in air from the cylindrical top cap 34. The airflow carries the material dust from the cylindrical top cap 34 and the sampling cylinder 32. Simultaneously, guided by the first spiral groove 33 and the second spiral groove 355, the material dust flows smoothly with the airflow and is transported by the hose 54, allowing it to enter the interior of the powder filter 51 for recycling, thus reducing resource waste.

[0036] The suction fan 53 is electrically connected to the intelligent controller 2, and the air outlet of the suction fan 53 is connected to the top of the powder filter 51. The sealing gasket 57 is made of rubber.

[0037] When the suction fan 53 stops working, the suction force on the sealing cone 56 disappears, and under the elastic force of the support spring strip 55, the sealing cone 56 drives the sealing gasket 57 to move in the opposite direction to reset. By blocking the air inlet of the cone connecting cylinder 52 with the sealing cone 56, and the sealing gasket 57 adhering to the inner wall of the air inlet of the cone connecting cylinder 52, a seal can be formed to prevent the material dust from flowing back.

[0038] In use, the retractable drive mechanism 31 is controlled to drive the cylindrical top cap 34 to move downward, so that the cylindrical top cap 34 drives the sampler 35 to move downward and extend, and contacts the material through the conical tip 357 at the bottom of the rotating shaft 351. The drive unit 352 is started, and the rotating shaft 351 is driven to rotate through the rotation of the output end of the servo motor. The rotating shaft 351 will drive the conical tip 357, the spiral sampling main blade 353 and the auxiliary blade 354 to rotate together to perform sampling. Material is discharged from the discharge pipe on the bottom-sensing discharge unit 36, and the pressure sensor installed in the discharge pipe monitors the bottom-sensing discharge unit 36's bottom-contact signal in real time. The bottom-sensing discharge unit 36 ​​transmits the bottom-contact signal to the intelligent controller 2 in the form of an electrical signal. The intelligent controller 2 receives and processes the signal. When a bottoming signal is detected, a bottoming protection step is executed, controlling the retractable drive mechanism 31 to retract the conical tip 357, the bottom of the spiral sampling main blade 353, and the bottom of the secondary blade 354 and stop their rotation. At the same time, the torque signal of the torque detection unit 356 is monitored in real time. The bottoming sensing discharge unit 36 ​​transmits the torque signal to the intelligent controller 2 in the form of an electrical signal. The intelligent controller 2 receives and processes the signal. When the torque signal exceeds the first preset threshold, the torque adaptive step is executed, controlling the output end of the servo motor to stop rotating, causing the shaft 351 to stop rotating and retract, and then restarting the rotation and extending again.

[0039] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An intelligent sampling device with a retractable drill bit and torque adaptive function, characterized in that, include: The vehicle body (1) and the intelligent controller (2) fixedly installed on the top side of the vehicle body (1); The sampling mechanism (3) includes a retractable drive mechanism (31) and a sampling cylinder (32). The sampling cylinder (32) is fixedly installed at the middle of the top of the vehicle body (1). The retractable drive mechanism (31) is installed at the top of the vehicle body (1) and close to the sampling cylinder (32). A first spiral groove (33) is opened on the inner side of the sampling cylinder (32). A cylindrical top cap (34) is hinged to the top of the retractable drive mechanism (31). A sampler (35) is installed at the center of the cylindrical top cap (34). A bottom-sensing discharge unit (36) is installed on the surface of the cylindrical top cap (34). The sampler (35) includes a rotating shaft (351) and a drive unit (352). The top of the outer circular surface of the rotating shaft (351) is rotatably mounted to the center of the cylindrical top cap (34) via a bushing. The drive unit (352) is mounted on the top of the cylindrical top cap (34). A spiral sampling main blade (353) is fixedly mounted on the outer circular surface of the rotating shaft (351). A secondary blade (354) is detachably fixedly mounted on the edge of the surface of the spiral sampling main blade (353). A second spiral groove (355) is opened on the spiral surface on the outer side of the spiral sampling main blade (353). A torque detection unit (356) is installed between the top of the rotating shaft (351) and the output end of the drive unit (352). A conical tip (357) is fixedly mounted on the bottom end of the rotating shaft (351). A powerful magnetic ball (358) is fixedly mounted on the side of the outer side of the secondary blade (354). An auxiliary component (4) is installed on the surface of the sampling tube (32), and a powder suction mechanism (5) is installed between the surface of the cylindrical cap (34) and the top of the vehicle body (1).

2. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 1, characterized in that: The retractable drive mechanism (31) is used to drive the sampler (35) to extend and retract along its axial direction. The retractable drive mechanism (31) is a hydraulic cylinder. The bottom-sensing discharge unit (36) is used to sample the contact status between the sampler (35) and the bottom of the material in real time and generate a bottom-sensing signal. The torque detection unit (356) is used to detect in real time the load torque of the drive unit (352) that drives the rotating shaft (351) on the drive sampler (35) to rotate. The drive unit (352) is a servo motor, and the torque detection unit (356) is a torque sensor that is integrated and electrically connected to the servo motor. The intelligent controller (2) is electrically connected to the bottom-sensing discharge unit (36), torque detection unit (356), retractable drive mechanism (31) and drive unit (352).

3. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 1, characterized in that: The sampling tube (32) is installed vertically, the first spiral groove (33) is evenly distributed on the inner side of the sampling tube (32), the cylindrical top cap (34) is installed directly above the sampling tube (32), and there are four retractable drive mechanisms (31), and the four retractable drive mechanisms (31) are evenly distributed along the circumference of the cylindrical top cap (34).

4. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 1, characterized in that: The secondary blade (354) is spiral-shaped, and the axis of the rotating shaft (351) coincides with the central axis of the cylindrical top cap (34) and the central axis of the sampling tube (32).

5. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 1, characterized in that: The auxiliary component (4) includes a semi-circular shell (41). The side of the surface of the semi-circular shell (41) is fixedly installed to the bottom of the outer circle of the sampling tube (32) by screws. A support spring (42) is fixedly installed on the inner wall of the semi-circular shell (41). A rectangular notch (43) is opened in the middle of the surface of the support spring (42). A striking magnetic block (44) is fixedly connected to one end of the support spring (42) away from the inner wall of the semi-circular shell (41).

6. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 5, characterized in that: There are four semi-circular shells (41), and the four semi-circular shells (41) are evenly distributed on the bottom of the outer circular surface of the sampling tube (32). The side of the striking magnetic block (44) away from the supporting spring (42) is in contact with the outer circular surface of the sampling tube (32).

7. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 1, characterized in that: The powder suction mechanism (5) includes a powder filter (51) and a conical connecting cylinder (52). The air inlet of the powder filter (51) is fixedly installed on the surface of the cylindrical top cap (34). The conical connecting cylinder (52) is fixedly installed on the side of the top of the vehicle body (1). A suction fan (53) is fixedly installed on the top of the powder filter (51). A flexible hose (54) is connected between the air inlet on the surface of the suction fan (53) and the air outlet of the conical connecting cylinder (52). A support spring strip (55) is fixedly installed on the inner side of the conical connecting cylinder (52). A sealing cone block (56) is fixedly connected to the middle of the surface of the support spring strip (55). A sealing gasket (57) is fixedly connected to the conical surface on the outer side of the sealing cone block (56).

8. The intelligent sampling device with retractable drill bit and torque adaptive function according to claim 7, characterized in that: The suction fan (53) is electrically connected to the intelligent controller (2), the air outlet of the suction fan (53) is connected to the top of the powder filter (51), and the sealing gasket (57) is made of rubber.

9. An intelligent sampling method with retractable drill bit and torque adaptive function, characterized in that: Includes the following steps: Step 1: Control the retractable drive mechanism to drive the cylindrical top cap to move downward, so that the cylindrical top cap drives the sampler to move downward and extend, and contact the material through the conical tip at the bottom of the rotating shaft; Step 2: Start the control drive unit. The rotation of the servo motor output drives the rotating shaft to rotate. The rotating shaft will drive the conical tip, the spiral sampling main blade and the auxiliary blade to rotate together to perform sampling. Step 3: Monitor the bottom-touching signal of the bottom-touching sensing and discharging unit in real time. The bottom-touching sensing and discharging unit will transmit the bottom-touching signal to the intelligent controller in the form of an electrical signal. The intelligent controller will receive and process the signal. Step 4: When a bottoming signal is detected, the bottoming protection step is executed. The retractable drive mechanism is controlled to retract the conical tip, the bottom of the spiral sampling main blade, and the bottom of the secondary blade and stop their rotation. Step 5: Monitor the torque signal of the torque detection unit in real time. The bottom-feeding sensing discharge unit will transmit the torque signal to the intelligent controller in the form of an electrical signal. The intelligent controller will receive and process the signal. Step 6: When the torque signal exceeds the first preset threshold, the torque adaptive step is executed, controlling the output end of the servo motor to stop rotating, causing the shaft to stop rotating and retract, and then restarting the rotation and extending again.

10. The intelligent sampling method with retractable drill bit and torque adaptive function according to claim 9, characterized in that: In the torque adaptive step, if the torque signal continuously exceeds the first preset threshold but does not exceed the second preset threshold, the "retract-rotate-extend" cycle is repeated until the torque signal is lower than the first preset threshold and the preset number of cycles is reached. If the torque signal exceeds the second preset threshold, the entire device is controlled to stop operating and an alarm is triggered.

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