Geological detection rock core sampling device

Abstract

The utility model discloses a geological detection rock core sampling device which comprises a supporting base, two bearing columns which are correspondingly arranged are erected in the middle of the upper end face of the supporting base, a transmission installation frame is sleeved on the bearing columns in a guiding mode, and a guiding shaft sleeve is fixedly installed on one side of the transmission installation frame. A transmission shaft is rotationally connected to the inner side of the guide shaft sleeve, a coring drill bushing is installed at the bottom end of the transmission shaft, a rock core withdrawing device is installed at the top of the inner side of the coring drill bushing, the transmission shaft is driven to rotate through a rotation driving assembly, and the transmission shaft is driven to ascend and descend through a lifting assembly installed at the upper end of the transmission shaft; the supporting base is further provided with a guide edge pressing assembly used for assisting the coring drill bushing in working. The problems that in the prior art, a drilling machine and a drill bit cannot measure the depth, the drilling process is unstable, sampling columns are irregular, rock core samples are broken or damaged due to the frequent drill jamming phenomenon, and the detection quality and data are affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of shell forming structure technology, specifically a geological testing rock core sampling device. Background Technology

[0002] Core drilling is a common exploration method in solid mineral geological exploration. Specifically, it involves using a cylindrical drill bit and drilling tools to break up rock in a circular pattern at the bottom of a hole, leaving a columnar core at the center. This core is then retrieved to study the geological and mineral conditions, hence the name core drilling. Depending on the drill bit used, core drilling methods include diamond drilling, carbide drilling, and bit drilling. Core drilling can also be performed using hydraulic impact drills, and diamond or carbide impact-resistant core drill bits can still be used.

[0003] For example, patent publication number CN 115014849 B discloses a core sampling device for engineering geological exploration, belonging to the field of geological exploration. It includes a main support frame, comprising a first support and a second support frame fixed to each other. A first lifting plate is mounted on the inner side of the first support frame via a lifting screw, and a second lifting plate is mounted on the inner side of the second support frame via a lifting screw. Both lifting screws are driven by a lifting motor. A tubular drill bit is rotatably mounted on the first lifting plate, driven by a first rotating mechanism. A tubular segmenting and lifting device is rotatably mounted on the second lifting plate, driven by a second rotating mechanism. This sampling device is suitable for sampling hard rocks. During sampling, a columnar core is first drilled into the rock, then the columnar core is segmented to form a semi-columnar core, which is then removed from the borehole, thus achieving rapid core sampling and facilitating subsequent testing operations.

[0004] However, the drilling rigs and drill bits used in the drilling process cannot measure the depth, the drilling process is unstable, the sampling column is irregular, and frequent drill jamming causes the rock core sample to break or be damaged, affecting the detection quality and data. In addition, when the drill bit comes into contact with the rock core, it is easy to cause the drill bit to deviate from the sampling point, resulting in inaccurate sampling. Therefore, it does not meet the existing needs. To address this, we propose a geological detection rock core sampling device. Utility Model Content

[0005] The purpose of this invention is to overcome the defects and shortcomings of the existing technology and provide a geological testing core sampling device, which solves the various problems existing in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A geological testing core sampling device includes a support base. Two corresponding bearing columns are mounted on the middle of the upper surface of the support base. A transmission mounting frame is guided and fitted on the bearing columns. A guide bushing is fixedly mounted on one side of the transmission mounting frame. A transmission shaft is rotatably connected to the inner side of the guide bushing. A core drill sleeve is mounted on the bottom end of the transmission shaft. A core ejector is mounted on the top inner side of the core drill sleeve. The rotation of the transmission shaft is driven by a rotation drive assembly, and the lifting and lowering of the transmission shaft is driven by a lifting assembly mounted on its upper end. A guide and edge-pressing assembly for assisting the core drill sleeve in operation is also provided on the support base.

[0008] The core ejector includes an inverted T-shaped top seat that is guided and slidably installed inside the core drill sleeve. The vertical section of the T-shaped top seat extends out of the core drill sleeve, and a transmission ring is installed at the extended end for independently driving its lifting and lowering.

[0009] A U-shaped groove is provided on one side of the bottom end of the drive shaft. The vertical section of the T-shaped top seat passes through the core drill sleeve and is inserted into the inner side of the U-shaped groove. The drive ring is rotatably connected to the drive shaft, and the drive ring is threadedly connected to the upper end of the T-shaped top seat.

[0010] The rotary drive assembly includes a drive motor fixedly mounted on the other side of the transmission mounting bracket. Both the upper end of the drive shaft and the output end of the drive motor are fixedly mounted with pulleys. Multiple belts are provided between the two pulleys, and the two pulleys are connected by multiple belt drives.

[0011] The lifting assembly includes a transmission screw, the upper end of which is rotatably mounted on a crossbeam. The crossbeam is mounted on both ends of a support column. The upper section of the transmission shaft is provided with an internal thread section that engages with the transmission screw. A hand-cranked feed turntable is mounted on the upper end of the transmission screw. An operating handle is provided on the hand-cranked feed turntable. A feed counting disc is provided below the hand-cranked feed turntable.

[0012] The guide pressing assembly includes a mounting sleeve, which is slidably mounted on a support base and located in a guide hole below the core drill sleeve. A limit ring is installed at the upper end of the mounting sleeve, and a pressure ring corresponding to the limit ring is installed at the bottom end of the drive shaft. The pressure ring is connected to the drive mounting frame via a connecting rod. Multiple positioning bent rods are fixedly installed at the bottom end of the mounting sleeve, and a support spring is installed on one side of each positioning bent rod. A guide seat is installed at the bottom end of each of the multiple support springs.

[0013] The bottom end of the mounting sleeve passes through the support base and fits onto the outer side of the upper end of the guide seat. The mounting sleeve and the guide seat are slidably connected by multiple support springs, and the multiple positioning bent rods are arranged circumferentially relative to the axis of the mounting sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the operating handle drives the transmission mounting frame to move downward through the transmission screw. Then, the transmission mounting frame can drive the core drill sleeve to move downward through the guide bushing and the transmission shaft. During the downward movement of the transmission mounting frame, the core drill sleeve is inserted into the inner side of the mounting sleeve, and the transmission mounting frame presses down on the mounting sleeve through the limiting ring. Then, the mounting sleeve drives multiple positioning bent rods to move downward under the guidance of the guide seat and position the periphery of the sampling point, thereby maintaining stability during the sampling process and preventing the core drill sleeve from shifting relative to the sampling point.

[0016] 2. This utility model uses a drive motor to drive a drive shaft to rotate inside a guide sleeve via two pulleys and multiple belts. The drive shaft then drives the core drill sleeve, drive ring, and T-shaped mandrel to rotate synchronously, thus realizing the core drilling operation. A U-shaped groove is provided on one side of the bottom end of the drive shaft. The upper end of the T-shaped mandrel passes through the core drill sleeve and is inserted into the inner side of the U-shaped groove, which rotates the drive ring. The drive ring then drives the T-shaped mandrel to move downward inside the core drill sleeve, thus separating the core from the core drill sleeve. The drilling depth of the core drill sleeve can be monitored by counting the number of rotations of the operating handle relative to the counting scale. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the core drilling sleeve of this utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the mounting sleeve of this utility model;

[0020] Figure 4 This utility model Figure 3 A schematic diagram of the cross-sectional structure of region A in the middle.

[0021] In the diagram: 1. Support base; 2. Bearing column; 3. Transmission mounting bracket; 4. Operating handle; 5. Counting dial; 6. Transmission screw; 7. Pulley; 8. Guide bushing; 9. Transmission shaft; 10. Core drill bushing; 11. Transmission ring; 12. Transmission motor; 13. T-shaped top head; 14. Mounting sleeve; 15. Limiting ring; 16. Guide seat; 17. Support spring; 18. Positioning bent rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] See appendix Figure 1-4 ;

[0024] A geological testing core sampling device includes a support base 1. Two corresponding bearing columns 2 are mounted on the middle of the upper surface of the support base 1. A transmission mounting frame 3 is guided and fitted on the bearing columns 2. A guide bushing 8 is fixedly mounted on one side of the transmission mounting frame 3. A transmission shaft 9 is rotatably connected to the inner side of the guide bushing 8. A core drill sleeve 10 is mounted on the bottom end of the transmission shaft 9. A core ejector is mounted on the top inner side of the core drill sleeve 10. The rotation of the transmission shaft 9 is driven by a rotation drive assembly, and the lifting and lowering of the transmission shaft 9 is driven by a lifting assembly mounted on its upper end. A guide and edge pressing assembly for assisting the core drill sleeve 10 in operation is also provided on the support base 1.

[0025] Please see Figure 1 and Figure 2 A drive motor 12 is fixedly installed on the other side of the transmission mounting bracket 3. The speed ratio between the drive motor and the main shaft is adjustable via pulleys between 10:1 and 10:5. A drive shaft 9 is rotatably connected to the inner side of the guide sleeve 8. A core drill sleeve 10 is installed at the bottom of the drive shaft 9. The core drill bit 10 installed at the front end of the main shaft can be replaced with any diameter between 33mm and 91mm. Pulleys 7 are fixedly installed at the upper end of the drive shaft 9 and the output end of the drive motor 12. Multiple belts are provided between the two pulleys 7. The two pulleys 7 are connected by multiple belts. The upper and lower ends of the drive shaft 9 and the guide sleeve 8 are rotatably connected via bearings. The core drill sleeve 10 is connected to one of the pulleys 7 via the drive shaft 9, so that the drive motor 12 drives the drive shaft 9 and the core drill sleeve to rotate and move downward synchronously through the two pulleys 7 and multiple belts, thereby realizing the core drilling operation.

[0026] Regarding the structure of the core ejector, a T-shaped head 13 is slidably connected to the inner side of the core drill sleeve 10. A drive ring 11 is installed on the outer side of the upper end of the T-shaped head 13. A U-shaped groove is provided on one side of the bottom end of the drive shaft 9. The upper end of the T-shaped head 13 passes through the core drill sleeve 10 and is inserted into the inner side of the U-shaped groove. The drive ring 11 is rotatably connected to the drive shaft 9. The upper end of the drive ring 11 and the T-shaped head 13 are connected by threads. By rotating the drive ring 11 relative to the drive shaft 9, the drive ring 11 drives the T-shaped head 13 to move downward inside the core drill sleeve 10, thereby separating the core from the core drill sleeve 10. When the core ejector rotates clockwise, the T-shaped head moves downward and the core is ejected. When the core ejector rotates counterclockwise, the T-shaped head moves upward and retracts.

[0027] Please see Figure 1 Regarding the structure of the lifting assembly, a transmission screw 6 is installed in the middle of the transmission mounting frame 3. A counting dial 5 is rotatably connected to the outer side of the upper end of the transmission screw 6. An operating handle 4 is rotatably connected to the upper end of the counting dial 5. The upper end of the transmission screw 6 passes through the transmission mounting frame 3, the bearing column 2, and the counting dial 5 in sequence and is fixedly connected to the middle of the operating handle 4. The upper end of the transmission screw 6 is rotatably connected to the bearing column 2 through a bearing. The upper end of the counting dial 5 is fixedly connected to the upper end of the bearing column 2. The bottom end of the transmission screw 6 is threadedly connected to the transmission mounting frame 3. By counting the number of rotations of the operating handle 4 relative to the counting dial 5, the drilling depth of the core drilling sleeve 10 can be monitored.

[0028] Regarding the structure of the guide pressing assembly, a mounting sleeve 14 is slidably connected to the inner side of one end of the support base 1. A limit ring 15 is installed on the upper end of the mounting sleeve 14. Multiple positioning bent rods 18 are fixedly installed on the bottom end of the mounting sleeve 14. A support spring 17 is installed on one side of the positioning bent rod 18. A guide seat 16 is installed at the bottom end of the multiple support springs 17. The bottom end of the mounting sleeve 14 passes through the support base 1 and fits on the outer side of the upper end of the guide seat 16. The mounting sleeve 14 and the guide seat 16 are slidably connected by multiple support springs 17. The multiple positioning bent rods 18 are arranged circumferentially relative to the axis of the mounting sleeve 14. The multiple positioning bent rods 18 move downward under the guidance of the guide seat 16 and position the periphery of the sampling point, thereby maintaining stability during the sampling process.

[0029] In use, the entire unit is moved to the sampling point via the support base 1, so that the axis of the mounting sleeve 14 coincides with the sampling point. The core drill sleeve 10 is fixedly connected to the bottom end of the drive shaft 9. The appropriate core drill bit is selected and installed according to the required sample diameter. The power is turned on. A U-shaped groove is provided on one side of the bottom end of the drive shaft 9. The upper end of the T-shaped top 13 passes through the core drill sleeve 10 and is inserted into the inner side of the U-shaped groove. The T-shaped top 13 is connected to the drive ring 11 by a thread. The operating handle 4 is rotated, so that the operating handle 4 drives the drive screw 6 to move the drive mounting frame 3 downward under the guidance of the bearing column 2. Then, the drive mounting frame 3 can drive the core drill sleeve 10 downward through the guide sleeve 8 and the drive shaft 9.

[0030] During the downward movement of the transmission mounting bracket 3, the core drill sleeve 10 is inserted into the inner side of the mounting sleeve 14 and the mounting sleeve 14 is pressed down by the pressure ring and the limiting ring 15. Then, the mounting sleeve 14 drives multiple positioning bent rods 18 to move down under the guidance of the guide seat 16 and position the periphery of the sampling point, thereby maintaining stability during the sampling process and preventing the core drill sleeve 10 from shifting relative to the sampling point.

[0031] The drive motor 12 is started, and under the support of the drive mounting frame 3, the drive motor 12 drives the drive shaft 9 to rotate inside the guide sleeve 8 via two pulleys 7 and multiple belts. The drive shaft 9 then drives the core drill sleeve 10, the drive ring 11, and the T-shaped mandrel 13 to rotate synchronously, realizing the core drilling operation. After sampling, the core drill sleeve 10 is reset, and then the drive ring 11 is rotated. The drive ring 11 then drives the T-shaped mandrel 13 to move downwards inside the core drill sleeve 10, separating the core from the core drill sleeve 10 and pushing the core out. The core ejector rotates counterclockwise, and the T-shaped mandrel moves upwards and retracts. This application has a simple structure, a scientific and reasonable design, and is fast and convenient to operate. It ensures standardized sampling and solves the problems in existing technologies, such as the inability of drilling rigs and drill bits to measure depth, unstable drilling processes, irregular sampling columns, and frequent jamming leading to core sample breakage or damage, affecting detection quality and data.

[0032] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0033] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A geological testing core sampling device, comprising a support base (1), characterized in that: Two corresponding bearing columns (2) are mounted on the middle of the upper surface of the support base (1). A transmission mounting bracket (3) is fitted on the bearing column (2). A guide bushing (8) is fixedly installed on one side of the transmission mounting bracket (3). A transmission shaft (9) is rotatably connected to the inner side of the guide bushing (8). A core drill sleeve (10) is installed at the bottom end of the transmission shaft (9). A core ejector is installed on the top inner side of the core drill sleeve (10). The rotation of the transmission shaft (9) is driven by a rotation drive assembly. The lifting of the transmission shaft (9) is driven by a lifting assembly installed at its upper end. A guide pressing assembly for assisting the core drill sleeve (10) in its operation is also provided on the support base (1).

2. The geological testing core sampling device according to claim 1, characterized in that: The core ejector includes an inverted T-shaped top seat (13) that is guided and slidably installed inside the core drill sleeve (10). The vertical section of the T-shaped top seat (13) extends out of the core drill sleeve (10), and the extended end is equipped with a transmission ring (11) for rotating and independently driving its lifting and lowering.

3. The geological testing core sampling device according to claim 2, characterized in that: A U-shaped groove is provided on one side of the bottom end of the drive shaft (9). The vertical section of the T-shaped top seat (13) passes through the core drill sleeve (10) and is inserted into the inner side of the U-shaped groove. The drive ring (11) is rotatably connected to the drive shaft (9). The drive ring (11) is connected to the upper end of the T-shaped top seat (13) by a thread.

4. The geological testing core sampling device according to claim 1, characterized in that: The rotary drive assembly includes a drive motor (12) fixedly installed on the other side of the transmission mounting bracket (3). The upper end of the drive shaft (9) and the output end of the drive motor (12) are both fixedly installed with pulleys (7). Multiple belts are provided between the two pulleys (7), and the two pulleys (7) are connected by multiple belt drives.

5. The geological testing core sampling device according to claim 1, characterized in that: The lifting assembly includes a transmission screw (6), the upper end of which is rotatably mounted on a crossbeam. The crossbeam is mounted on the two top ends of a bearing column. The upper section of the transmission shaft (9) is provided with an internal thread section that engages with the transmission screw (6). A hand-cranked feed turntable is mounted on the upper end of the transmission screw (6). An operating handle (4) is provided on the hand-cranked feed turntable. A feed counting disc (5) is provided below the hand-cranked feed turntable.

6. The geological testing core sampling device according to claim 1, characterized in that: The guide pressing assembly includes a mounting sleeve (14), which is slidably mounted on the support base (1) and located in the guide hole below the core drill sleeve (10). A limit ring (15) is installed at the upper end of the mounting sleeve (14), and a pressure ring corresponding to the limit ring (15) is installed at the bottom end of the drive shaft (9). The pressure ring is connected to the drive mounting frame (3) through a connecting rod. Multiple positioning bent rods (18) are fixedly installed at the bottom end of the mounting sleeve (14). A support spring (17) is installed on one side of the positioning bent rod (18), and a guide seat (16) is installed at the bottom end of the multiple support springs (17).

7. The geological testing core sampling device according to claim 6, characterized in that: The bottom end of the mounting sleeve (14) passes through the support base (1) and fits on the outer side of the upper end of the guide seat (16). The mounting sleeve (14) and the guide seat (16) are slidably connected by multiple support springs (17). The multiple positioning bent rods (18) are arranged in a circle relative to the axis of the mounting sleeve (14).

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