Mine geological exploration sampling device

Abstract

The invention relates to the technical field of geological exploration, in particular to an underground mine geological exploration sampling device which comprises a base, a drill rod, a rotary driving unit and a hydraulic driving unit, a spiral drill bit is arranged at the bottom of the drill rod, a sampling cavity is coaxially formed in the position, located above the spiral drill bit, in the drill rod, and soil sampling openings are formed in the peripheral side of the sampling cavity; a soil sampling opening is formed in the drill rod, a hinge seat is arranged at the bottom of the soil sampling opening, an arc-shaped scraping plate is hinged to the hinge seat, a shaft hole is formed in the axis of the drill rod, a shaft sleeve is coaxially arranged in the shaft hole, and spiral blades attached to the inner wall of the shaft hole are arranged on the peripheral side of the shaft sleeve. Soil enters the sampling cavity through the soil taking opening, and the spiral blade can convey the soil in the sampling cavity to the ground under the condition that the drill rod is not taken out.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, and in particular to a sampling device for geological exploration of mines and geology. Background Art

[0002] Geological and mineral exploration is based on advanced geological science theories, a large amount of field geological observations and the collection and collation of relevant geological data. It uses comprehensive geological means and methods such as geological surveys, geophysical and geochemical exploration, and drilling and exploration projects to obtain reliable geological and mineral information. In the process of deep geological exploration, it is necessary to use sampling devices to sample the required strata. Among them, drilling sampling is a more commonly used sampling method. Generally, a drilling rig is used to open a hole, and then the soil at the bottom or side wall of the hole is sampled. The samples taken are generally in block or powder form.

[0003] In the prior art, after sampling the soil, the sampling drill bit needs to be removed to obtain the sample. If the amount of sample removed is insufficient, or soil at a different depth is required, it is necessary to drill again for secondary sampling, which results in low working efficiency of the prior art. Summary of the invention

[0004] In view of the above problems, it is necessary to provide a geological survey sampling device for mineral resources to address the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: A mining geological exploration sampling device comprises a base and a drill rod vertically mounted on the base, a rotary drive unit for driving the drill rod to rotate around its own axis and a hydraulic drive unit for driving the drill rod to move in a vertical direction are arranged on the base, a spiral drill bit is arranged at the bottom of the drill rod, a sampling cavity is coaxially arranged above the spiral drill bit inside the drill rod, a plurality of soil sampling ports are arranged around the sampling cavity, a hinged seat is arranged at the bottom of the soil sampling port, an arc-shaped scraper is hinged on the hinged seat, and the arc-shaped scraper fits the bottom of the soil sampling port. The soil taking port is blocked when the soil is taken. When the drill rod descends to a specified depth, the arc-shaped scraper flips outward, and the soil enters the sampling cavity through the soil taking port. An axial hole is arranged at the axis of the drill rod, and the axial hole connects the top of the drill rod and the sampling cavity. A shaft sleeve is coaxially arranged in the axial hole, and a spiral blade that fits the inner wall of the shaft hole is arranged on the circumference of the shaft sleeve. The spiral blade extends to the bottom of the sampling cavity, and the spiral blade rotates to transport the soil in the sampling cavity upward. A sample box for collecting the soil transported by the spiral blade is arranged at the top of the drill rod.

[0006] Preferably, an inner slide rail extending horizontally perpendicular to the length direction of the arc-shaped scraper is provided on the inner wall of the arc-shaped scraper. A slider is slidably installed in the inner slide rail. A connecting rod is hinged on the slider. The connecting rod is vertically inserted into the bottom of the sampling chamber and extends into the inner cavity provided below the sampling chamber of the drill rod. A lifting plate is slidably installed in the inner cavity, and the bottom ends of the connecting rods are fixedly connected to the lifting plate.

[0007] Preferably, a shaft rod extending vertically upward is provided at the axis of the lifting plate. The shaft rod passes through the shaft sleeve and extends to the top of the drill rod. The hydraulic driving unit includes a first linear driver fixedly installed on the base. The working end of the first linear driver moves in the vertical direction. The working end of the first linear driver is connected to the top end of the shaft rod. When the shaft rod moves down until the arc-shaped scraper seals the soil sampling port, the drill rod is driven to move down.

[0008] Preferably, a plurality of first guide rods are provided on the base around the drill rod. The hydraulic driving unit further includes a lifting table. The lifting table is sleeved on the first guide rods through sleeves provided on its circumference. The sample box is fixedly installed on the lifting table. An installation sleeve is provided on the lifting table at the bottom of the sample box. The installation sleeve is coaxial with the drill rod. A surrounding annular groove is provided on the inner wall of the installation sleeve. A limiting ring provided on the outer wall of the top end of the drill rod is installed in the annular groove. A closing cover is provided on the lifting table. The closing cover is fixedly installed on the top of the sample box. A plurality of vertically extending guide sleeves are provided on the top of the closing cover. A connecting seat is provided on the working end of the first linear driver. A limiting head is coaxially provided at the top of the shaft rod. The limiting head is rotatably installed at the axis of the connecting seat. A plurality of second guide rods are provided at the bottom of the connecting seat. The second guide rods are inserted into the guide sleeves.

[0009] Preferably, insertion holes extending radially are provided on both the guide sleeve and the second guide rod. When the connecting seat drives the lifting plate to move down until the arc-shaped scraper seals the soil sampling port, the insertion holes on the second guide rod and the guide sleeve are in the same straight line. A second linear driver is fixedly installed on the lifting table. The working end of the second linear driver moves in the horizontal direction parallel to the axis of the insertion hole. A sliding block is fixedly installed on the working end of the second linear driver. A locking rod aligned with the insertion hole on the guide sleeve is provided on the side of the sliding block facing the guide sleeve. The locking rod is inserted into the insertion holes of the guide sleeve and the second guide rod to lock the connecting seat and the lifting table.

[0010] Preferably, a first gear is rotatably installed on the closing cover. The first gear is coaxially connected to the bushing. A second toothed ring is rotatably installed on one side of the first gear of the closing cover. A reversing gear is rotatably installed between the second toothed ring and the first gear. The reversing gear is respectively meshed and connected with the first gear and the second toothed ring; a third gear is rotatably installed on the connecting seat. The third gear is coaxially connected to the top end of the shaft rod. A fourth gear meshed with the third gear is rotatably installed on the connecting seat. The axis of the fourth gear is on the same straight line as the axis of the second toothed ring. A transmission shaft is coaxially installed on the fourth gear. The transmission shaft extends vertically downward and passes through the closing cover and the second toothed ring. A first fitting disc is coaxially arranged at the bottom end of the transmission shaft. An elastic insertion rod is arranged on the upper side of the first fitting disc. The axis of the elastic insertion rod is vertically arranged, and the elastic insertion rod can move along the vertical direction; a second fitting disc is coaxially arranged below the second toothed ring. A connecting jack is arranged at the bottom of the second fitting disc. The elastic insertion rod is inserted into the connecting jack to enable the spiral blade to rotate synchronously in the opposite direction to the drill rod.

[0011] Preferably, the axis of the connecting jack is vertically arranged, and the linear distance between the axis of the connecting jack and the axis of the second toothed ring is equal to the linear distance between the axis of the elastic insertion rod and the axis of the transmission shaft.

[0012] Preferably, a closed cover is arranged on the closing cover. The first gear, the second toothed ring, the reversing gear, the second fitting disc and the first fitting disc are all located inside the closed cover.

[0013] Preferably, a sampling port and a disassembly panel for plugging the sampling port are arranged on the side wall of the sample box.

[0014] Preferably, a plurality of vertically extending spline grooves are arranged on the circumferential side of the outer wall of the drill rod. The rotary driving unit includes a driving gear rotatably installed on the base. The axis of the driving gear is on the same straight line as the axis of the drill rod. The driving gear is spline-connected to the drill rod through the spline groove of the drill rod; the rotary driving unit further includes a rotary driver for driving the driving gear to rotate around its own axis.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: First, in the present invention, the soil is agitated by the outward turning of the arc-shaped scraper in cooperation with the rotation of the drill rod. The soil enters the sampling port along the inner wall of the arc-shaped scraper and then enters the sampling cavity. The spiral blade rotates to convey the soil, and the soil in the sampling cavity can be conveyed to the ground without taking out the drill rod, which is convenient and fast to operate. It avoids the cumbersome process of obtaining samples by taking out the drill bit in the prior art and further improves the work efficiency.

[0016] Secondly, the present invention connects the working end of the first linear actuator to the top of the shaft rod, so that the hydraulic drive unit can not only control the overall lifting and lowering of the drill rod, but also control the opening and closing of the arc scraper before drilling. This integrated control method simplifies the operation process of the device and reduces additional control mechanisms. Close the soil opening before drilling.

[0017] Thirdly, in the present invention, when the arc scraper is flipped outward, the spiral blade is connected to the drill rod through transmission, and the rotation direction of the second gear ring is opposite to that of the first gear through the intermediate transmission of the reversing gear, thereby realizing the reverse synchronous rotation of the spiral blade and the drill rod, ensuring that the soil can be transported upward when the drill rod rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional sampling device for geological prospecting and mining in the first working state. Figure 1 ; Figure 2 It is a main view of a sampling device for geological prospecting and mining in a first working state; Figure 3 yes Figure 2 Cross-sectional view at AA of FIG. Figure 4 yes Figure 3 A local enlarged view of point A; Figure 5 yes Figure 3 A partial enlarged view of point B; Figure 6 It is a three-dimensional sampling device for geological prospecting and mining in the first working state. Figure 2 ; Figure 7 yes Figure 6 A partial enlarged view of point C; Figure 8 yes Figure 6 A partial enlarged view of point D; Figure 9 It is a main view of a sampling device for geological prospecting and mining in a second working state; Figure 10 yes Figure 9 A cross-sectional view of the section at EE; Figure 11 yes Figure 10 A partial enlarged view of point F; Figure 12 yes Figure 10 A partial enlarged view of point G.

[0019] The reference numerals in the figure are: 1, base; 11, first guide rod; 2, drill pipe; 21, helical drill bit; 22, sampling chamber; 221, soil sampling port; 222, hinge seat; 223, arc-shaped scraper; 224, inner slide rail; 225, slider; 226, connecting rod; 23, shaft hole; 231, shaft sleeve; 232, helical blade; 24, sample box; 241, sampling port; 242, disassembly panel; 25, inner cavity; 251, lifting plate; 252, shaft rod; 253, limit head; 26, limit ring; 27, spline groove; 3, rotary drive unit; 31, drive gear; 32, rotary driver; 4, hydraulic drive unit; 41, first linear driver; 42, lifting table; 421, sleeve; 422, mounting sleeve; 423, annular groove; 424, second linear driver; 425, sliding block; 426, locking rod; 43, closing cover; 431, guide sleeve; 432, insertion hole; 433, first gear; 434, second toothed ring; 435, reversing gear; 436, second fitting disc; 437, connection jack; 438, closing cover; 44, connecting seat; 441, second guide rod; 442, third gear; 443, fourth gear; 444, transmission shaft; 445, first fitting disc; 446, elastic insertion rod. Detailed implementation manners

[0020] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation manners.

[0021] Refer to Figures 1 to 12 : A geological exploration sampling device for geology and mineral resources, comprising a base 1 and a drill pipe 2 vertically installed on the base 1. A rotary drive unit 3 for driving the drill pipe 2 to rotate around its own axis and a hydraulic drive unit 4 for driving the drill pipe 2 to move in the vertical direction are provided on the base 1. A helical drill bit 21 is provided at the bottom of the drill pipe 2. A sampling chamber 22 is coaxially arranged above the helical drill bit 21 inside the drill pipe 2. A plurality of soil sampling ports 221 (such as Figure 4 and Figure 11As shown in the figure, a hinge seat 222 is provided at the bottom of the soil taking port 221, and an arc-shaped scraping plate 223 is hinged on the hinge seat 222. When the arc-shaped scraping plate 223 fits the soil taking port 221, it seals the soil taking port 221. When the drill rod 2 descends to a specified depth, the arc-shaped scraping plate 223 flips outward, and the soil enters the sampling cavity 22 through the soil taking port 221; a shaft hole 23 is provided at the axis of the drill rod 2, and the shaft hole 23 communicates with the top of the drill rod 2 and the sampling cavity 22. A shaft sleeve 231 is coaxially arranged in the shaft hole 23, and a spiral blade 232 that fits the inner wall of the shaft hole 23 is arranged on the circumferential side of the shaft sleeve 231. The spiral blade 232 extends to the bottom of the sampling cavity 22, and the spiral blade 232 rotates to convey the soil in the sampling cavity 22 upward; a sample box 24 for collecting the soil conveyed by the spiral blade 232 is provided at the top of the drill rod 2.

[0022] When the sampling device in this application is in use, first start the rotary drive unit 3 to drive the drill rod 2 to rotate around its own axis. At the same time, the hydraulic drive unit 4 drives the drill rod 2 to move downward in the vertical direction, so that the spiral drill bit 21 at the bottom of the drill rod 2 rotates and drills into the soil to achieve hole opening. During the descent, the arc-shaped scraping plate 223 fits the soil taking port 221 to seal it, preventing the soil from entering the sampling cavity 22 in advance during the drilling process. The arc-shaped scraping plate 223 is hinged on the hinge seat 222 at the bottom of the soil taking port 221. When the drill rod 2 descends to a specified depth, the arc-shaped scraping plate 223 flips outward. Subsequently, the rotation of the drill rod 2 can cause the arc-shaped scraping plate 223 to agitate the soil, and the soil enters the sampling cavity 22 along the inner wall of the arc-shaped scraping plate 223 through the soil taking port 221. The spiral blade 232 on the circumferential side of the shaft sleeve 231 coaxially arranged in the shaft hole 23 rotates to convey the soil in the sampling cavity 22 upward. The spiral blade 232 extends to the bottom of the sampling cavity 22, and the shaft sleeve 231 rotates in the shaft hole 23, driving the spiral blade 232 to rotate, thereby pushing the soil upward along the spiral blade 232. By rotating the spiral blade 232 to convey the soil, the soil in the sampling cavity 22 can be conveyed to the ground without removing the drill rod 2, which is convenient and fast. It avoids the cumbersome process of obtaining samples by removing the drill bit in the prior art and further improves the work efficiency. At the same time, the design of the spiral blade 232 can better adapt to blocky or powdery soil samples and ensure the stability of the conveying process. The sample box 24 provided at the top of the drill rod 2 collects the soil conveyed by the spiral blade 232. After the spiral blade 232 conveys the soil to the top of the drill rod 2, it directly falls into the sample box 24 to complete the sample collection.

[0023] In order to realize the synchronous flipping of all the arc-shaped scraping plates 223, the following features are specifically set: An inner slide rail 224 extending horizontally perpendicular to the length direction of the arc-shaped scraping plate 223 is provided on the inner wall of the arc-shaped scraping plate 223. A slider 225 is slidably installed in the inner slide rail 224. Preferably, a chute is provided on the lower surface of the inner slide rail, and the slider 225 is slidably fitted in the chute and can slide within the chute. A connecting rod 226 is hinged to the slider 225. The connecting rod 226 is vertically inserted into the sampling cavity 22 at the bottom and extends into the inner cavity 25 provided below the drill pipe 2 within the sampling cavity 22. A lifting plate 251 is slidably installed in the inner cavity 25, and the bottom ends of all the connecting rods 226 are fixedly connected to the lifting plate 251.

[0024] In this embodiment, the drill pipe 2 drills into the ground under the action of the rotary drive unit 3 and the hydraulic drive unit 4. At this time, the lifting plate 251 is located at the lowest position of the inner cavity 25. The connecting rod 226 pulls down the slider 225 in the inner slide rail 224, and the arc-shaped scraping plate 223 fits against the soil-taking port 221 to block the soil-taking port 221. When the drill pipe 2 descends to the designated depth, the lifting plate 251 moves upward in the inner cavity 25. Since the bottom ends of all the connecting rods 226 are fixedly connected to the lifting plate 251, the upward movement of the lifting plate 251 drives the connecting rod 226 to move upward. The connecting rod 226 is hinged to the slider 225, and the slider 225 is pushed upward by the connecting rod 226 within the inner slide rail 224 and starts to slide along the inner slide rail 224 in a direction away from the center of the soil-taking port 221. Because the arc-shaped scraping plate 223 is hinged to the hinge seat 222 at the bottom of the soil-taking port 221, as the slider 225 slides, the connecting rod 226 generates an outward thrust on the arc-shaped scraping plate 223, causing the arc-shaped scraping plate 223 to turn outward around the hinge seat 222, thereby opening the soil-taking port 221, and soil can enter the sampling cavity 22 through the soil-taking port 221. In this embodiment, the lifting plate 251 slides in the inner cavity 25 and, by connecting with all the connecting rods 226, realizes the unified control of all the arc-shaped scraping plates 223. When the lifting plate 251 moves upward or downward, all the connecting rods 226 connected to it move synchronously, and then drive all the arc-shaped scraping plates 223 to turn synchronously. This design ensures that all the soil-taking ports 221 can be opened or closed simultaneously, guaranteeing the consistency and accuracy of the sampling process.

[0025] In order to realize the movement of the lifting plate 251 inside the drill pipe 2, the following features are specifically set: A shaft rod 252 extending vertically upward is provided at the axis of the lifting plate 251. The shaft rod 252 passes through the shaft sleeve 231 and extends to the top of the drill pipe 2. The hydraulic drive unit 4 includes a first linear driver 41 fixedly installed on the base 1. The working end of the first linear driver 41 moves in the vertical direction. The working end of the first linear driver 41 is connected to the top end of the shaft rod 252. After the shaft rod 252 moves downward and the arc-shaped scraping plate 223 blocks the soil-taking port 221, it drives the drill pipe 2 to move downward.

[0026] In this embodiment, the shaft rod 252 on the lifting plate 251 extends vertically upward, passes through the shaft sleeve 231 to reach the top of the drill rod 2, and is connected to the working end of the first linear actuator 41. When starting to drill, the first linear actuator 41 is activated, and its working end drives the shaft rod 252 to move downward. The shaft rod 252 drives the lifting plate 251 to move downward together in the inner cavity 25. Since the bottom end of the connecting rod 226 is fixedly connected to the lifting plate 251, the downward movement of the lifting plate 251 pulls the connecting rod 226 to move downward. The connecting rod 226 acts on the arc-shaped scraping plate 223 through the slider 225, causing the arc-shaped scraping plate 223 to turn inward around the hinge seat 222 until it fits the soil taking port 221. Subsequently, the working end of the first linear actuator 41 moves downward to drive the drill rod 2 to move downward. In this embodiment, by connecting the working end of the first linear actuator 41 to the top end of the shaft rod 252, the hydraulic drive unit 4 can not only control the overall lifting of the drill rod 2, but also control the opening and closing of the arc-shaped scraping plate 223 before drilling. This integrated control method simplifies the operation process of the device and reduces additional control mechanisms. Closing the soil taking port 221 before drilling avoids accidental entry of soil into the sampling cavity 22 during drilling and ensures the accuracy of sampling; the first linear actuator 41 in this embodiment can be an oil cylinder.

[0027] In order to enable the drill rod 2 to perform a rotational movement relative to the lifting table 42, the following features are specifically set: A number of first guide rods 11 are arranged on the base 1 around the drill rod 2. The hydraulic drive unit 4 further includes a lifting table 42. The lifting table 42 is sleeved on the first guide rods 11 through the sleeves 421 arranged on its circumference. The sample box 24 is fixedly installed on the lifting table 42. An installation sleeve 422 coaxial with the drill rod 2 is arranged at the bottom of the lifting table 42. A surrounding annular groove 423 is arranged on the inner wall of the installation sleeve 422. The limiting ring 26 arranged on the outer wall of the top end of the drill rod 2 is installed in the annular groove 423; a closing cover 43 is arranged on the lifting table 42. The closing cover 43 is fixedly installed on the top of the sample box 24. A number of vertically extending guide sleeves 431 are arranged on the top of the closing cover 43; a connecting seat 44 is arranged on the working end of the first linear actuator 41. A limiting head 253 is coaxially arranged at the top of the shaft rod 252. The limiting head 253 is rotatably installed at the axis of the connecting seat 44. A number of second guide rods 441 are arranged at the bottom of the connecting seat 44. The second guide rods 441 are inserted into the guide sleeves 431.

[0028] In this embodiment, the first guide rod 11 is fixed to the base 1 on the circumferential side of the drill pipe 2, and the lifting table 42 is sleeved on the first guide rod 11 through the sleeve 421. During the process of driving the lifting table 42 to lift and lower by the hydraulic drive unit 4, the first guide rod 11 provides a guiding function for the lifting table 42. The mounting sleeve 422 is located at the bottom of the lifting table 42 and is coaxial with the drill pipe 2. A ring groove 423 is provided on its inner wall, and the limiting ring 26 on the outer wall of the top end of the drill pipe 2 is installed in the ring groove 423. This enables the relative positioning of the drill pipe 2 and the lifting table 42 in the axial direction, so that the drill pipe 2 can rotate relative to the lifting table 42. A connecting seat 44 is provided on the working end of the first linear driver 41. A limiting head 253 is coaxially provided at the top of the shaft rod 252. The limiting head 253 is rotatably installed at the axis of the connecting seat 44. The second guide rod 441 provided at the bottom of the connecting seat 44 is inserted into the guide sleeve 431. The connecting seat 44 is used to connect the first linear driver 41 and the shaft rod 252. The limiting head 253 enables the shaft rod 252 to rotate in the connecting seat 44. The cooperation of the second guide rod 441 and the guide sleeve 431 further enhances the stability and guiding property of the connection.

[0029] In order to ensure that when the hydraulic drive unit 4 pulls the shaft rod 252 to move the drill pipe 2 upward, the arc-shaped scraper 223 will not directly flip outward, the following features are specifically set: Insertion holes 432 extending radially are provided on both the guide sleeve 431 and the second guide rod 441. When the connecting seat 44 drives the lifting plate 251 to move downward until the arc-shaped scraper 223 blocks the soil taking port 221, the insertion holes 432 on the second guide rod 441 and the guide sleeve 431 are on the same straight line; a second linear driver 424 is fixedly installed on the lifting table 42. The working end of the second linear driver 424 moves in the horizontal direction parallel to the axis of the insertion hole 432. A sliding block 425 is fixedly installed on the working end of the second linear driver 424. A locking rod 426 that is on the same straight line as the insertion hole 432 on the guide sleeve 431 is provided on the side of the sliding block 425 facing the guide sleeve 431. The locking rod 426 is inserted into the insertion holes 432 of the guide sleeve 431 and the second guide rod 441 to lock the connecting seat 44 and the lifting table 42.

[0030] In this embodiment, when the hydraulic drive unit 4 moves the lifting plate 251 downward through the shaft rod 252 so that the arc-shaped scraping plate 223 blocks the soil-taking port 221, the insertion holes 432 on the second guide rod 441 and the guide sleeve 431 will be in the same straight line. At this time, the second linear driver 424 is started, and its working end drives the sliding block 425 to move in the horizontal direction parallel to the axis of the insertion hole 432. The locking rod 426 on the sliding block 425 will move toward the guide sleeve 431 accordingly. Finally, the locking rod 426 will be inserted into the insertion holes 432 of the guide sleeve 431 and the second guide rod 441 to realize the locking of the connecting seat 44 and the lifting platform 42. In this way, when the hydraulic drive unit 4 pulls the shaft rod 252 to move the drill rod 2 upward, since the connecting seat 44 and the lifting platform 42 are locked, the upward movement of the shaft rod 252 will not drive the lifting plate 251 to move upward, thus ensuring that the arc-shaped scraping plate 223 will not directly flip outward. When a sampling operation is required, that is, when the soil-taking port 221 is opened, the working end of the second linear driver 424 moves in the reverse direction, driving the sliding block 425 and the locking rod 426 to move out of the insertion hole 432 in the horizontal direction, unlocking the connecting seat 44 and the lifting platform 42. After that, the hydraulic drive unit 4 can normally drive the shaft rod 252 to move, and drive the arc-shaped scraping plate 223 to flip outward through the movement of the lifting plate 251 to perform the soil-taking operation. In this embodiment, the second linear driver 424 can be a cylinder or an electric push rod.

[0031] In order to achieve the purpose that the spiral blade 232 and the drill rod 2 can rotate synchronously in the reverse direction, the following features are specifically set: A first gear 433 is rotatably installed on the closing cover 43 (as Figure 12 shown), the first gear 433 is coaxially connected with the shaft sleeve 231. A second toothed ring 434 is rotatably installed on one side of the first gear 433. A reversing gear 435 is rotatably installed between the second toothed ring 434 and the first gear 433. The reversing gear 435 is respectively meshed and connected with the first gear 433 and the second toothed ring 434; A third gear 442 is rotatably installed on the connecting seat 44. The third gear 442 is coaxially connected with the top end of the shaft rod 252. A fourth gear 443 meshed with the third gear 442 is rotatably installed on the connecting seat 44. The axis of the fourth gear 443 is on the same straight line as the axis of the second toothed ring 434. A transmission shaft 444 is coaxially installed on the fourth gear 443. The transmission shaft 444 extends vertically downward and passes through the closing cover 43 and the second toothed ring 434. A first fitting disc 445 is coaxially arranged at the bottom end of the transmission shaft 444. An elastic insertion rod 446 is arranged on the upper side of the first fitting disc 445. The axis of the elastic insertion rod 446 is vertically arranged, and the elastic insertion rod 446 can move in the vertical direction; A second fitting disc 436 is coaxially arranged below the second toothed ring 434. A connecting jack 437 is arranged at the bottom of the second fitting disc 436 (combined with Figure 4 and Figure 12), the elastic insertion rod 446 is inserted into the connection jack 437 to enable the spiral blade 232 and the drill pipe 2 to perform reverse synchronous rotation.

[0032] The axis of the connection jack 437 is vertically arranged, and the linear distance between the axis of the connection jack 437 and the axis of the second tooth ring 434 is equal to the linear distance between the axis of the elastic insertion rod 446 and the axis of the transmission shaft 444.

[0033] In this embodiment, when the first linear driver 41 drives the connection seat 44 to move downward, the transmission shaft 444 coaxially installed on the fourth gear 443 moves downward, so that the first fitting disc 445 at the bottom end of the transmission shaft 444 is separated from the second fitting disc 436 below the second tooth ring 434. When the first linear driver 41 drives the connection seat 44 to move upward, the connection seat 44 drives the shaft rod 252 and the lifting plate 251 to move upward, realizing the flipping of the arc-shaped scraper 223. And as the connection seat 44 moves upward, the first fitting disc 445 at the bottom end of the transmission shaft 444 fits with the second fitting disc 436 below the second tooth ring 434. Since the linear distance between the axis of the connection jack 437 and the axis of the second tooth ring 434 is equal to the linear distance between the axis of the elastic insertion rod 446 and the axis of the transmission shaft 444, the elastic insertion rod 446 can move to be inserted into the connection jack 437 at the bottom of the second fitting disc 436. In this way, the rotational movement of the transmission shaft 444 will be transmitted to the second tooth ring 434 through the first fitting disc 445, the elastic insertion rod 446, and the second fitting disc 436. Since the first gear 433 is coaxially connected to the shaft sleeve 231, the reversing gear 435 is located between the first gear 433 and the second tooth ring 434 and meshes with both of them respectively, the rotation of the second tooth ring 434 will drive the first gear 433 to rotate through the reversing gear 435. Through the intermediate transmission of the reversing gear 435, the rotation direction of the second tooth ring 434 is opposite to that of the first gear 433, thereby realizing the reverse synchronous rotation of the spiral blade 232 and the drill pipe 2 and ensuring that the soil can be transported upward when the drill pipe 2 rotates.

[0034] In order to prevent the soil entering the sample box 24 from affecting the connection state of structures such as the first gear 433, the second tooth ring 434, and the reversing gear 435, the following features are specifically set: A closed cover 438 is provided on the closed cover 43, and the first gear 433, the second tooth ring 434, the reversing gear 435, the second fitting disc 436, and the first fitting disc 445 are all located inside the closed cover 438.

[0035] In this embodiment, a closed cover 438 is provided on the closed cover 43, and key transmission and connection components such as the first gear 433, the second toothed ring 434, the reversing gear 435, the second fitting disc 436, and the first fitting disc 445 are all placed inside the closed cover 438, isolating them from the soil, effectively preventing soil from entering its interior, avoiding soil pollution and interference to important structures such as the first gear 433, the second toothed ring 434, and the reversing gear 435, ensuring the stability of the connection state and transmission performance between these components, and thus ensuring the normal operation of the entire device.

[0036] In order to facilitate the extraction of soil from the sample box 24, the following features are specifically set: A sampling port 241 (as shown in Figure 5 ) is provided on the side wall of the sample box 24, and a disassembly panel 242 for blocking the sampling port 241.

[0037] In this embodiment, when it is necessary to extract the soil in the sample box 24, the disassembly panel 242 blocking the sampling port 241 can be opened, and the soil sample can be taken out from the sample box 24 through the sampling port 241.

[0038] In order to achieve the purpose that the rotary drive unit 3 can drive the drill rod 2 to rotate, the following features are specifically set: A plurality of vertically extending spline grooves 27 are provided on the outer circumferential side of the drill rod 2. The rotary drive unit 3 includes a drive gear 31 rotatably installed on the base 1. The axis of the drive gear 31 is on the same straight line as the axis of the drill rod 2. The drive gear 31 is spline-connected to the drill rod 2 through the spline groove 27 of the drill rod 2. The rotary drive unit 3 further includes a rotary driver 32 for driving the drive gear 31 to rotate around its own axis.

[0039] In this embodiment, the drive gear 31 and the drill rod 2 are connected through the spline groove 27, so that the power of the rotary driver 32 can be effectively transmitted to the drill rod 2, ensuring the stability and reliability of the rotation of the drill rod 2, and avoiding the situation of slipping or uneven force during the rotation process. At the same time, this connection method can withstand a large torque, meet the large resistance that may be encountered during the drilling process of the geological exploration sampling device, and ensure that the drill rod 2 can rotate and drill stably and efficiently. The rotary driver 32 in this embodiment can be a diesel engine or a motor device in the prior art. Preferably, the output shaft end of the rotary driver is meshed and driven with the drive gear 31 through the installation of a power gear. Both the power gear and the drive gear 31 are bevel gears, and a transmission structure of bevel gear meshing is adopted.

[0040] Working principle: First, start the rotary drive unit 3 to drive the drill pipe 2 to rotate around its own axis. At the same time, the hydraulic drive unit 4 drives the drill pipe 2 to move downward in the vertical direction, so that the screw drill bit 21 at the bottom of the drill pipe 2 rotates and drills into the soil to achieve hole opening. During the descending process, the arc-shaped scraper 223 fits against the soil sampling port 221 to block it, preventing soil from entering the sampling cavity 22 prematurely during the drilling process. The arc-shaped scraper 223 is hinged to the hinge seat 222 at the bottom of the soil sampling port 221. When the drill pipe 2 descends to the specified depth, the arc-shaped scraper 223 flips outward. Subsequently, the rotation of the drill pipe 2 can cause the arc-shaped scraper 223 to stir the soil, and the soil enters the sampling cavity 22 through the soil sampling port 221 along the inner wall of the arc-shaped scraper 223. The spiral blades 232 on the circumferential side of the bushing 231 coaxially arranged in the shaft hole 23 rotate to convey the soil in the sampling cavity 22 upward.

[0041] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A geological exploration sampling device for mining geology, comprising a base (1), and a drill pipe (2) vertically installed on the base (1). A rotary drive unit (3) for driving the drill pipe (2) to rotate around its own axis is provided on the base (1), and a hydraulic drive unit (4) for driving the drill pipe (2) to move in the vertical direction. It is characterized in that, A screw bit (21) is provided at the bottom of the drill pipe (2). A sampling chamber (22) is coaxially arranged inside the drill pipe (2) above the screw bit (21). A plurality of soil sampling ports (221) are arranged on the periphery of the sampling chamber (22). A hinge seat (222) is provided at the bottom of the soil sampling port (221). An arc-shaped scraping plate (223) is hinged on the hinge seat (222). When the arc-shaped scraping plate (223) fits the soil sampling port (221), the soil sampling port (221) is blocked. When the drill pipe (2) descends to a specified depth, the arc-shaped scraping plate (223) turns outwards, and soil enters the sampling chamber (22) through the soil sampling port (221). A shaft hole (23) is arranged at the axis of the drill pipe (2). The shaft hole (23) communicates with the top of the drill pipe (2) and the sampling chamber (22). A shaft sleeve (231) is coaxially arranged in the shaft hole (23). Helical blades (232) that fit the inner wall of the shaft hole (23) are arranged on the periphery of the shaft sleeve (231). The helical blades (232) extend to the bottom of the sampling chamber (22). The rotation of the helical blades (232) conveys the soil in the sampling chamber (22) upwards. A sample box (24) for collecting the soil conveyed by the helical blades (232) is provided at the top of the drill pipe (2).

2. The geological exploration sampling device for geology and mineral resources according to claim 1, characterized in that, An inner slide rail (224) horizontally extending perpendicular to the length direction of the arc-shaped scraping plate (223) is arranged on the inner wall of the arc-shaped scraping plate (223). A slider (225) is slidably installed in the inner slide rail (224). A connecting rod (226) is hinged on the slider (225). The connecting rod (226) is vertically inserted into the bottom of the sampling chamber (22) and extends into an inner cavity (25) provided below the sampling chamber (22) in the drill pipe (2). A lifting plate (251) is slidably installed in the inner cavity (25). The bottom end of the connecting rod (226) is fixedly connected to the lifting plate (251).

3. The geological exploration sampling device for geology and mineral resources according to claim 2, characterized in that, A shaft rod (252) vertically extending upwards is arranged at the axis of the lifting plate (251). The shaft rod (252) passes through the shaft sleeve (231) and extends to the top of the drill pipe (2). The hydraulic drive unit (4) includes a first linear actuator (41) fixedly installed on the base (1). The working end of the first linear actuator (41) moves in the vertical direction. The working end of the first linear actuator (41) is connected to the top end of the shaft rod (252). After the shaft rod (252) moves downwards to block the soil sampling port (221) with the arc-shaped scraping plate (223), it drives the drill pipe (2) to move downwards.

4. The geological exploration sampling device for geology and mineral resources according to claim 3, characterized in that, A plurality of first guide rods (11) are arranged on the base (1) around the drill pipe (2). The hydraulic drive unit (4) further includes a lifting platform (42). The lifting platform (42) is sleeved on the first guide rods (11) through sleeves (421) arranged on its periphery. The sample box (24) is fixedly installed on the lifting platform (42). An installation sleeve (422) located at the bottom of the sample box (24) is arranged on the lifting platform (42). The installation sleeve (422) and the drill pipe (2) are on the same axis. A surrounding annular groove (423) is arranged on the inner wall of the installation sleeve (422). A limiting ring (26) arranged on the outer wall of the top end of the drill pipe (2) is installed in the annular groove (423). A closed cover (43) is provided on the lifting platform (42). The closed cover (43) is fixedly installed on the top of the sample box (24). A plurality of vertically extending guide sleeves (431) are provided on the top of the closed cover (43). A connecting seat (44) is provided on the working end of the first linear driver (41). A limiting head (253) is coaxially provided at the top of the shaft rod (252). The limiting head (253) is rotatably installed at the axis of the connecting seat (44). A plurality of second guide rods (441) are provided at the bottom of the connecting seat (44). The second guide rods (441) are inserted into the guide sleeves (431).

5. The geological exploration sampling device for geology and mineral resources according to claim 4, characterized in that, Both the guide sleeve (431) and the second guide rod (441) are provided with radially extending insertion holes (432). When the connecting seat (44) drives the lifting plate (251) to move down to the arc-shaped scraping plate (223) to block the soil taking port (221), the insertion holes (432) on the second guide rod (441) and the guide sleeve (431) are on the same straight line. A second linear driver (424) is fixedly installed on the lifting platform (42). The working end of the second linear driver (424) moves in a horizontal direction parallel to the axis of the insertion hole (432). A sliding block (425) is fixedly installed on the working end of the second linear driver (424). A locking rod (426) that is on the same straight line as the insertion hole (432) on the guide sleeve (431) is provided on the side of the sliding block (425) facing the guide sleeve (431). The locking rod (426) is inserted into the insertion holes (432) of the guide sleeve (431) and the second guide rod (441) to lock the connecting seat (44) and the lifting platform (42).

6. The geological exploration sampling device for geology and mineral resources according to claim 5, characterized in that, A first gear (433) is rotatably installed on the closed cover (43). The first gear (433) is coaxially connected to the shaft sleeve (231). A second toothed ring (434) is rotatably installed on one side of the closed cover (43) where the first gear (433) is located. A reversing gear (435) is rotatably installed between the second toothed ring (434) and the first gear (433). The reversing gear (435) is respectively meshed and connected with the first gear (433) and the second toothed ring (434). A third gear (442) is rotatably installed on the connecting seat (44). The third gear (442) is coaxially connected to the top end of the shaft rod (252). A fourth gear (443) that is meshed with the third gear (442) is rotatably installed on the connecting seat (44). The axis of the fourth gear (443) is on the same straight line as the axis of the second toothed ring (434). A transmission shaft (444) is coaxially installed on the fourth gear (443). The transmission shaft (444) extends vertically downward and passes through the closed cover (43) and the second toothed ring (434). A first fitting disc (445) is coaxially provided at the bottom end of the transmission shaft (444). An elastic insertion rod (446) is provided on the upper side of the first fitting disc (445). The axis of the elastic insertion rod (446) is vertically arranged, and the elastic insertion rod (446) can move in the vertical direction. A second fitting disc (436) is coaxially arranged below the second toothed ring (434). A connection jack (437) is arranged at the bottom of the second fitting disc (436). An elastic plug rod (446) is inserted into the connection jack (437) to enable the spiral blade (232) and the drill pipe (2) to rotate synchronously in the reverse direction.

7. The geological exploration sampling device for geology and mineral resources according to claim 6, characterized in that, The axis of the connection jack (437) is arranged vertically. The linear distance between the axis of the connection jack (437) and the axis of the second toothed ring (434) is equal to the linear distance between the axis of the elastic plug rod (446) and the axis of the transmission shaft (444).

8. The geological exploration sampling device for geology and mineral resources according to claim 6, characterized in that, A closed cover (438) is arranged on the closed cover (43). The first gear (433), the second toothed ring (434), the reversing gear (435), the second fitting disc (436) and the first fitting disc (445) are all located inside the closed cover (438).

9. The geological exploration sampling device for geology and mineral resources according to claim 6, wherein, A sampling port (241) and a disassembly panel (242) for blocking the sampling port (241) are arranged on the side wall of the sample box (24).

10. The geological exploration sampling device for geology and mineral resources according to claim 1, characterized in that, A plurality of vertically extending spline grooves (27) are arranged on the circumferential side of the outer wall of the drill pipe (2). The rotary driving unit (3) includes a driving gear (31) rotatably installed on the base (1). The axis of the driving gear (31) is on the same straight line as the axis of the drill pipe (2). The driving gear (31) is spline-connected to the drill pipe (2) through the spline groove (27) of the drill pipe (2). The rotary driving unit (3) further includes a rotary driver (32) for driving the driving gear (31) to rotate around its own axis.

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