Sampling device for geotechnical engineering investigation

Abstract

The invention belongs to the field of rock and soil sampling, and particularly relates to a geotechnical engineering investigation sampling device which comprises four supporting frames, the four supporting frames are annularly arranged at equal angles, a sampling drill is arranged in the middle of the four supporting frames, the sampling drill can continuously move downwards under the rotation effect, the sampling drill is vertically arranged, and the sampling drill is arranged in the middle of the supporting frames. The sampling drill is arranged in an up-down penetrating mode, a gear motor used for driving the sampling drill to rotate is arranged above the sampling drill, the middles of the four supporting frames are connected with the gear motor, the sampling drill is formed by combining a plurality of separating sleeves, and the whole device can be assembled on a sampling site. Then the gear motor is installed in the middle of the four supporting frames, the sampling drill is vertically placed on the rock soil, the output end of the gear motor is connected with the top of the sampling drill to drive the sampling drill to rotate, the sampling drill can continuously drill downwards under the rotation effect, a drilled core is left in the sampling drill, and sampling work can be completed by obtaining the core.

Description

Technical Field

[0001] The invention belongs to the field of rock and soil sampling, in particular to a rock and soil engineering survey sampling device. Background Art

[0002] The main purpose of geotechnical engineering investigation and sampling is to reveal and divide the strata, identify and describe the properties and composition of the rock and soil, find out the geological structure, the distribution boundaries and forms of adverse geological phenomena, etc. Through drilling and sampling, the distribution of underground rock and soil layers can be revealed, including the geological age, lithology, thickness and other information of the strata, which is crucial to understanding the geological structure and foundation bearing capacity.

[0003] A patent application with publication number CN118190500A discloses a geotechnical sampling device for geotechnical engineering survey, which relates to the technical field of geotechnical engineering survey. The geotechnical sampling device for geotechnical engineering survey can obtain multiple geotechnical samples from different depths in the same operation by setting multiple groups of sampling tubes, thereby obtaining more comprehensive and representative underground geotechnical information, reducing the number of repeated drilling times, saving survey time and labor costs, and improving survey efficiency. Compared with a single sampling tube, multiple samples can be obtained in the same drilling.

[0004] Traditional geotechnical sampling devices are large in size and generally cannot be disassembled. However, geotechnical engineering survey sampling needs to go deep into various regions and locations. In some rugged geographical locations, it is inconvenient to carry large sampling devices, resulting in the inability to successfully sample.

[0005] To this end, the present invention provides a geotechnical engineering survey sampling device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a geotechnical engineering survey sampling device described in the present invention comprises four support frames, the four support frames are arranged in a circular shape with equal angles, a sampling drill is arranged in the middle of the four support frames, the sampling drill can continuously move downward under the action of rotation, the sampling drill is arranged vertically, the sampling drill is arranged through from top to bottom, a reduction motor for driving the sampling drill to rotate is arranged above the sampling drill, the middle of the four support frames is connected to the reduction motor, and the sampling drill is composed of a plurality of separation sleeves;

[0008] Through the setting of the sampling drill, the sampling drill is composed of multiple separation sleeves. When carrying, the sampling drill can be disassembled. When the sampling point is found, the multiple separation sleeves are spliced ​​to form a sampling drill of the required length. Under this setting, sampling drills of different lengths can be spliced ​​according to different sampling. At the same time, the four support frames can be bent and carried. The whole device can be assembled at the sampling site. Then the reduction motor is installed in the middle of the four support frames, and the sampling drill is placed vertically on the rock and soil. The output end of the reduction motor is connected to the top of the sampling drill to drive the sampling drill to rotate. The sampling drill can continue to drill downward under the action of rotation, and the core obtained by drilling will remain inside the sampling drill. The sampling work can be completed by obtaining the core.

[0009] Preferably, two symmetrically arranged connecting grooves are provided between the outer sides of adjacent separation sleeves, and docking blocks for connecting the two separation sleeves are provided in the connecting grooves. The two separation sleeves are docked up and down, and the upper and lower ends of the separation sleeves are provided with mutually adaptable bayonet sockets so that the two separation sleeves can be docked with each other. After docking, the two docking blocks are placed in the connecting grooves, and the two separation sleeves are fixed using the docking blocks, thereby completing the fixation of adjacent separation sleeves.

[0010] Preferably, the docking block is arranged in an "I" shape, and a fixing hole is opened on the outer side of the docking block and extends to the other side. A bolt is arranged in the fixing hole, and the two bolts in the docking block are respectively connected to two different separation sleeves. A protective cover for protecting the docking block is arranged on the outer side of the docking block. The structural arrangement of the docking block can ensure a stable connection between the two separation sleeves regardless of whether they are rotated, bent or plugged in. The docking block and the two separation sleeves are fixed by bolts, and the connecting groove is covered by the protective cover to reduce the influence of the external environment on the connecting groove and the docking block.

[0011] Preferably, a spiral threaded strip is fixedly connected to the outer side of the separation sleeve, and the sampling drill also includes a drill tooth sleeve, and a plurality of drill teeth for breaking the rock formation are fixedly connected to the bottom of the drill tooth sleeve, and the drill tooth sleeve is connected to the bottom of the separation sleeve at the bottom. The connection method between the drill tooth sleeve and the separation sleeve is the same as the connection method between the two separation sleeves. By fixing a threaded strip on the outer side of the separation sleeve, the separation sleeve contacts the rock and soil during rotation, and the threaded strip will form threads in the rock and soil during the friction with the rock and soil, thereby allowing the subsequent sampling drill to continue to enter. At the same time, since the multiple separation sleeves and the reduction motor have a large gravity, a large drilling force can be provided to the bottom of the separation sleeve at the beginning, ensuring that the subsequent sampling drill continues to self-drill into the rock and soil. When the sampling drill is taken out later, the sampling drill can be pulled out by simply reversing the sampling drill, which is convenient for subsequent coring work. The setting of the drill tooth sleeve is used to increase the penetration effect of the sampling drill on the rock and soil at the beginning.

[0012] Preferably, the end of the support frame is rotatably connected to a movable rail, the top of the reduction motor is fixedly connected to a connecting platform, four clamping blocks are fixedly connected to the outer side of the top of the connecting platform, the clamping blocks are slidably clamped with the movable rail, and the movable rail and the clamping blocks cooperate with each other to allow the reduction motor to be stably lifted and lowered, the support frame and the movable rail are rotatably connected, and the movable rail is arranged on the outside of the reduction motor and remains vertical, so that the space for the reduction motor to sink becomes larger, and the reduction motor can also maintain stable output operation.

[0013] Preferably, the support frame includes two support rods, which are rotatably connected to each other. The upper support rod is rotatably connected to the outer side of the movable rail, and the bottom of the lower support rod is rotatably connected to a base. The outer sides of the four movable rails are sleeved with binding rings, which can surround the four movable rails to ensure that the four movable rails remain in a vertical state. The structure of the support frame allows the two support rods to rotate, and together with the movable rails, the reduction motor can be lifted to a higher height or sunk to a lower height, so that the sampling drill can be spliced ​​longer to obtain deeper rock and soil samples.

[0014] Preferably, two symmetrically arranged connecting clamps are connected to the bottom of the reduction motor, and the connecting clamps are used to fix the two sides of the top surface of the separation sleeve. The outer side of the top of the sampling drill is fixed by the connecting clamps close to the top, and then the reduction motor drives the connecting clamps and the sampling drill to rotate, thereby completing the function of controlling the rotation of the sampling drill; if the sampling drill is spliced ​​very long at the beginning, it will not only consume a lot of power, but also the longer sampling drill is not stable enough and easy to tilt, so only a part of the sampling drill is spliced ​​at the beginning. When most of the sampling drill enters the rock and soil, the connecting clamp is loosened, the height of the reduction motor is adjusted, and the separation sleeve is continued to be connected to the top of the sampling drill, and then the connecting clamp is fixed to the top separation sleeve. In this way, the height of the sampling drill exposed on the outside of the rock and soil can be ensured to be low, and the problem of instability of the sampling drill during drilling will not occur.

[0015] Preferably, a transmission sleeve is fixedly connected to the bottom of the reduction motor, and a transmission disk is arranged on the inner ring of the transmission sleeve. Both the transmission disk and the transmission sleeve are made of magnet material. A disc is fixedly connected to the bottom of the transmission disc. The bottom of the transmission sleeve is slidably engaged with the top surface of the disc. The reduction motor drives the transmission sleeve to rotate. Under the action of magnetic force, the transmission sleeve drives the transmission sleeve, the disc and the connecting clamp to rotate, thereby driving the sampling drill to rotate. When encountering resistance during the sampling process, the reduction motor can continue to rotate instead of stopping suddenly, thereby reducing the loss to the reduction motor.

[0016] Preferably, the connecting fixture includes a fixed disk, which is fixedly connected to the outer side of the circular disk, and an adjustment plate is slidably connected to the outer side of the fixed disk. An adjustment bolt that penetrates the adjustment plate and the fixed disk is provided on the outer side of the adjustment plate. The adjustment bolt is threadedly connected to the adjustment plate and the fixed disk. The separation sleeve is clamped by the adjustment plate and the fixed disk, and then the three are fixed using the adjustment bolt to complete the fixing process.

[0017] Preferably, an insert rod penetrating the transmission sleeve and the transmission disk is provided on the outer side of the transmission sleeve, a threaded groove is provided on the end of the insert rod, and a nut is threadedly connected to the outer side of the end of the insert rod. When encountering rock and soil that is difficult to drill by magnetic force, the speed of the reduction motor can be slowed down to increase the power, and the transmission sleeve and the transmission disk are fixed by the insert rod, and the insert rod is fixed by the nut. Through this arrangement, the equipment can slowly take samples even if it encounters hard rock and soil structures.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The geotechnical engineering survey sampling device described in the present invention is composed of a plurality of separation sleeves assembled and spliced ​​together through the setting of a sampling drill. When carrying, the sampling drill can be disassembled. After finding the sampling point, the plurality of separation sleeves are spliced ​​together to form a sampling drill of a required length. Under this setting, sampling drills of different lengths can be spliced ​​together according to different sampling. At the same time, the four support frames can be bent and carried. The whole device can be assembled at the sampling site. After that, the reduction motor is installed in the middle of the four support frames, and the sampling drill is placed vertically on the rock and soil. The output end of the reduction motor is connected to the top of the sampling drill to drive the sampling drill to rotate. The sampling drill can continuously drill downward under the action of rotation, and the core obtained by drilling will remain in the sampling drill. The sampling work can be completed by obtaining the core.

[0020] 2. A geotechnical engineering survey and sampling device described in the present invention connects two separation sleeves up and down, and the upper and lower ends of the separation sleeves are provided with mutually compatible bayonet sockets to allow the two separation sleeves to connect with each other. After docking, the two docking blocks are placed in the connecting grooves, and the two separation sleeves are fixed by the docking blocks, thereby completing the fixation of adjacent separation sleeves. The structural setting of the docking blocks can ensure a stable connection between the two separation sleeves regardless of whether they are rotated, bent or plugged in. The docking block and the two separation sleeves are fixed by bolts, and the connecting groove is covered by a protective cover to reduce the impact of the external environment on the connecting groove and the docking block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 is a stereogram of the sampling drill of the present invention;

[0024] Figure 3 is a stereogram of the separation sleeve of the present invention;

[0025] Figure 4 It is a stereoscopic diagram of the reduction motor and the transmission sleeve of the present invention;

[0026] Figure 5 is a cross-sectional view of the transmission sleeve of the present invention;

[0027] In the figure: 1. support frame; 2. sampling drill; 3. support rod; 4. moving rail; 5. restraining ring; 6. connecting table; 7. clamping block; 8. reduction motor; 9. transmission sleeve; 10. separation sleeve; 11. drill tooth sleeve; 12. connecting groove; 13. docking block; 14. bolt; 15. protective cover; 16. threaded strip; 17. plug rod; 18. connecting fixture; 19. nut; 20. transmission plate; 21. fixed plate; 22. adjustment plate; 23. adjustment bolt. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figures 1 to 3 As shown, a geotechnical engineering survey sampling device according to an embodiment of the present invention comprises four support frames 1, the four support frames 1 are arranged in a circular shape with equal angles, a sampling drill 2 is arranged in the middle of the four support frames 1, the sampling drill 2 can continuously move downward under the action of rotation, the sampling drill 2 is arranged vertically, the sampling drill 2 is arranged through from top to bottom, a reduction motor 8 for driving the sampling drill 2 to rotate is arranged above the sampling drill 2, the middle parts of the four support frames 1 are connected to the reduction motor 8, and the sampling drill 2 is composed of a plurality of separation sleeves 10;

[0030] In some places near mountains, it is necessary to sample the rock and soil of the mountains. At this time, it is difficult to transport the large-volume equipment to the location. If only manpower is used for sampling, it is difficult to obtain the required rock and soil samples;

[0031] Through the setting of the sampling drill 2, the sampling drill 2 is composed of a plurality of separation sleeves 10 combined and spliced ​​together. When carrying, the sampling drill 2 can be disassembled. When the sampling point is found, the plurality of separation sleeves 10 are spliced ​​together to form a sampling drill 2 of the required length. Under this setting, sampling drills 2 of different lengths can be spliced ​​together according to different sampling. At the same time, the four support frames 1 can be bent and carried, and the entire device can be assembled at the sampling site. Then, the reduction motor 8 is installed in the middle of the four support frames 1, and the sampling drill 2 is placed vertically on the rock and soil. The output end of the reduction motor 8 is connected to the top of the sampling drill 2 to drive the sampling drill 2 to rotate. The sampling drill 2 can continuously drill downward under the rotation, and the core obtained by drilling will remain inside the sampling drill 2. The sampling work can be completed by obtaining the core.

[0032] like Figures 1 to 5 As shown, two symmetrically arranged connecting grooves 12 are provided between the outer sides of the adjacent separation sleeves 10, and a docking block 13 for connecting the two separation sleeves 10 is provided in the connecting groove 12;

[0033] During operation, the two separation sleeves 10 are butt-jointed up and down. The upper and lower ends of the separation sleeves 10 are provided with mutually adaptable bayonet sockets so that the two separation sleeves 10 can be butt-jointed with each other. After butt-jointing, the two butt-jointing blocks 13 are placed in the connecting grooves 12, and the two separation sleeves 10 are fixed using the butt-jointing blocks 13, thereby completing the fixation of adjacent separation sleeves 10.

[0034] like Figures 1 to 5 As shown, the docking block 13 is arranged in an "I" shape, and a fixing hole penetrating to the other side is opened on the outer side of the docking block 13, and a bolt 14 is arranged in the fixing hole. The two bolts 14 in the docking block 13 are respectively connected to two different separation sleeves 10, and a protective cover 15 for protecting the docking block 13 is arranged on the outer side of the docking block 13;

[0035] During operation, the structural setting of the docking block 13 ensures a stable connection between the two separation sleeves 10 regardless of whether they are rotated, bent or plugged in and out. The docking block 13 and the two separation sleeves 10 are fixed by bolts 14, and the connecting groove 12 is covered by a protective cover 15 to reduce the impact of the external environment on the connecting groove 12 and the docking block 13.

[0036] like Figures 1 to 5 As shown, a spiral thread strip 16 is fixedly connected to the outer side of the separation sleeve 10, and the sampling drill 2 also includes a drill tooth sleeve 11, and a plurality of drill teeth for breaking the rock formation are fixedly connected to the bottom of the drill tooth sleeve 11. The drill tooth sleeve 11 is connected to the bottom of the separation sleeve 10 at the bottom, and the connection method between the drill tooth sleeve 11 and the separation sleeve 10 is the same as the connection method between the two separation sleeves 10;

[0037] During operation, a threaded strip 16 is fixedly connected to the outer side of the separation sleeve 10 so that the separation sleeve 10 contacts the rock and soil during rotation. The threaded strip 16 forms threads in the rock and soil during the friction with the rock and soil, thereby allowing the subsequent sampling drill 2 to continue to enter. At the same time, since multiple separation sleeves 10 and the reduction motor 8 have a large gravity, a large drilling force can be provided to the bottom of the separation sleeve 10 at the beginning, ensuring that the subsequent sampling drill 2 continues to self-drill into the rock and soil. When the sampling drill 2 is subsequently taken out, the sampling drill 2 can be pulled out by simply reversing the sampling drill 2, which is convenient for subsequent coring work. The setting of the drill tooth sleeve 11 is used to increase the penetration effect of the sampling drill 2 on the rock and soil at the beginning.

[0038] like Figures 1 to 5 As shown, the end of the support frame 1 is rotatably connected to a moving rail 4, the top of the reduction motor 8 is fixedly connected to a connecting platform 6, and the top outer side of the connecting platform 6 is fixedly connected to four clamping blocks 7, and the clamping blocks 7 are slidably clamped with the moving rail 4;

[0039] During operation, the movable rail 4 and the clamping block 7 cooperate with each other to allow the reduction motor 8 to be stably raised and lowered. The support frame 1 and the movable rail 4 are rotatably connected, and the movable rail 4 is arranged on the outside of the reduction motor 8 and remains vertical. In this way, the space for the reduction motor 8 to sink becomes larger, and the reduction motor 8 can also maintain stable output operation.

[0040] like Figures 1 to 5 As shown, the support frame 1 includes two support rods 3, the two support rods 3 are rotatably connected, the support rod 3 located at the top is rotatably connected to the outer side of the movable rail 4, the bottom of the support rod 3 located at the bottom is rotatably connected to a base, and the outer sides of the four movable rails 4 are sleeved with restraint rings 5;

[0041] During operation, the restraining ring 5 can surround the four movable rails 4 to ensure that the four movable rails 4 remain in a vertical state. The structure of the support frame 1 allows the two support rods 3 to rotate. In addition, the movable rails 4 allow the reduction motor 8 to be lifted to a higher height or sunk to a lower height, so that the sampling drill 2 can be spliced ​​longer to obtain deeper rock and soil samples.

[0042] like Figures 1 to 5 As shown, the bottom of the reduction motor 8 is connected to two symmetrically arranged connection clamps 18, and the connection clamps 18 are used to fix the two sides of the top surface of the separation sleeve 10;

[0043] During operation, the outer side of the top of the sampling drill 2 is fixed to the top by the connecting clamp 18, and then the reduction motor 8 drives the connecting clamp 18 and the sampling drill 2 to rotate, thereby completing the function of controlling the rotation of the sampling drill 2; if the sampling drill 2 is spliced ​​very long at the beginning, it will not only consume a lot of power, but also the longer sampling drill 2 is not stable enough and easy to tilt, so only a part of the sampling drill 2 is spliced ​​at the beginning. When most of the sampling drill 2 enters the rock and soil, the connecting clamp 18 is loosened, the height of the reduction motor 8 is adjusted, and the separation sleeve 10 is continued to be connected to the top of the sampling drill 2, and then the connecting clamp 18 is fixed on the top separation sleeve 10. In this way, the height of the sampling drill 2 exposed on the outside of the rock and soil can be ensured to be low, and the problem of instability of the sampling drill 2 during the drilling process will not occur.

[0044] like Figures 1 to 5 As shown, a transmission sleeve 9 is fixedly connected to the bottom of the reduction motor 8, and a transmission disc 20 is arranged on the inner ring of the transmission sleeve 9. The transmission disc 20 and the transmission sleeve 9 are both made of magnet material. A disc is fixedly connected to the bottom of the transmission disc 20, and the bottom of the transmission sleeve 9 is slidably engaged with the top surface of the disc.

[0045] During operation, the reduction motor 8 drives the transmission sleeve 9 to rotate. Under the action of magnetic force, the transmission sleeve 9 drives the transmission sleeve 9, the disc and the connecting clamp 18 to rotate, thereby driving the sampling drill 2 to rotate. When encountering resistance during the sampling process, the reduction motor 8 can still keep rotating instead of suddenly stopping, thereby reducing the loss of the reduction motor 8.

[0046] like Figures 1 to 5 As shown, the connecting fixture 18 includes a fixing plate 21, the fixing plate 21 is fixedly connected to the outer side of the disc, the outer side of the fixing plate 21 is slidably connected with an adjustment plate 22, the outer side of the adjustment plate 22 is provided with an adjustment bolt 23 that penetrates the adjustment plate 22 and the fixing plate 21, and the adjustment bolt 23 is threadedly connected with both the adjustment plate 22 and the fixing plate 21;

[0047] During operation, the separation sleeve 10 is clamped by the adjusting plate 22 and the fixing plate 21, and then the three are fixed by the adjusting bolt 23, thereby completing the fixing process.

[0048] like Figures 1 to 5 As shown, the outer side of the transmission sleeve 9 is provided with an insertion rod 17 penetrating the transmission sleeve 9 and the transmission plate 20, the end of the insertion rod 17 is provided with a thread groove, and the outer side of the end of the insertion rod 17 is threadedly connected with a nut 19;

[0049] During operation, when encountering rock and soil that is difficult to drill by magnetic force, the speed of the reduction motor 8 can be slowed down to increase the power, and the drive sleeve 9 and the drive plate 20 can be fixed with the plug rod 17, and the plug rod 17 can be fixed with the nut 19. Through this setting, the equipment can slowly take samples even if it encounters hard rock and soil structures.

[0050] During operation, through the setting of the sampling drill 2, the sampling drill 2 is composed of a plurality of separation sleeves 10 combined and spliced. When carrying, the sampling drill 2 can be disassembled. After finding the sampling point, the plurality of separation sleeves 10 are spliced ​​to form a sampling drill 2 of a required length. Under this setting, sampling drills 2 of different lengths can be spliced ​​according to different sampling. At the same time, the four support frames 1 can be bent and carried. The entire device can be assembled at the sampling site. Then, the reduction motor 8 is installed in the middle of the four support frames 1, and the sampling drill 2 is placed vertically on the rock and soil. The output end of the reduction motor 8 is connected to the top of the sampling drill 2 to drive the sampling drill 2 to rotate. The sampling drill 2 can continuously drill downward under the rotation, and the core obtained by drilling will remain in the sampling drill 2. The sampling work can be completed by obtaining the core.

[0051] The two separation sleeves 10 are butted up and down. The upper and lower ends of the separation sleeves 10 are provided with mutually adapted bayonet holes, so that the two separation sleeves 10 can be butted together. After butting, the two butting blocks 13 are placed in the connecting grooves 12, and the two separation sleeves 10 are fixed by using the butt blocks 13, thereby completing the fixing of the adjacent separation sleeves 10;

[0052] The structural setting of the docking block 13 ensures that the two separation sleeves 10 can be stably connected regardless of rotation, bending or plugging. The docking block 13 and the two separation sleeves 10 are fixed by bolts 14, and the connection groove 12 is covered by a protective cover 15 to reduce the impact of the external environment on the connection groove 12 and the docking block 13;

[0053] By fixing the threaded strip 16 on the outer side of the separation sleeve 10, the separation sleeve 10 contacts the rock and soil during rotation. The threaded strip 16 forms a thread in the rock and soil during the friction with the rock and soil, so that the subsequent sampling drill 2 can continue to enter. At the same time, since the multiple separation sleeves 10 and the reduction motor 8 have a large gravity, a large drilling force can be provided to the bottom of the separation sleeve 10 at the beginning, ensuring that the subsequent sampling drill 2 continues to self-drill into the rock and soil. When the sampling drill 2 is taken out later, the sampling drill 2 can be pulled out by simply reversing the sampling drill 2, which is convenient for the subsequent coring work. The setting of the drill tooth sleeve 11 is used to increase the penetration effect of the sampling drill 2 on the rock and soil at the beginning;

[0054] The movable rail 4 and the clamping block 7 cooperate with each other to allow the reduction motor 8 to be stably lifted and lowered. The support frame 1 and the movable rail 4 are rotatably connected, and the movable rail 4 is arranged outside the reduction motor 8 to remain vertical, so that the space for the reduction motor 8 to sink becomes larger, and the reduction motor 8 can also maintain stable output work;

[0055] The restraining ring 5 can surround the four moving rails 4 to ensure that the four moving rails 4 remain in a vertical state. The structure of the support frame 1 allows the two support rods 3 to rotate. Together with the moving rails 4, the reduction motor 8 can be lifted to a higher height or sunk to a lower height, so that the sampling drill 2 can be spliced ​​longer to obtain deeper rock and soil samples.

[0056] The outer side of the top of the sampling drill 2 is fixed to the top by the connecting clamp 18, and then the reduction motor 8 drives the connecting clamp 18 and the sampling drill 2 to rotate, thereby completing the function of controlling the rotation of the sampling drill 2; if the sampling drill 2 is spliced ​​very long at the beginning, it will not only consume a lot of power, but also the long sampling drill 2 is not stable enough and is easy to tilt, so only a part of the sampling drill 2 is spliced ​​at the beginning, and when most of the sampling drill 2 enters the rock and soil, the connecting clamp 18 is loosened, the height of the reduction motor 8 is adjusted, and the separation sleeve 10 is continued to be connected to the top of the sampling drill 2, and then the connecting clamp 18 is fixed to the separation sleeve 10 at the top, so that the height of the sampling drill 2 exposed outside the rock and soil can be ensured to be low, and the problem of instability of the sampling drill 2 during the drilling process will not occur;

[0057] The reduction motor 8 drives the transmission sleeve 9 to rotate. The transmission sleeve 9 drives the transmission sleeve 9, the disc and the connecting fixture 18 to rotate under the action of magnetic force, and then drives the sampling drill 2 to rotate. When encountering resistance during the sampling process, the reduction motor 8 can still keep rotating instead of stopping suddenly, reducing the loss of the reduction motor 8;

[0058] The separation sleeve 10 is clamped by the adjustment plate 22 and the fixing plate 21, and then the three are fixed by the adjustment bolt 23, thereby completing the fixing process;

[0059] When encountering rock and soil that is difficult to drill by magnetic force, the speed of the reduction motor 8 can be slowed down to increase the power, and the drive sleeve 9 and the drive plate 20 can be fixed with the plug rod 17, and the nut 19 can be used to fix the plug rod 17. Through this setting, the equipment can slowly take samples even if it encounters hard rock and soil structures.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A geotechnical engineering survey sampling device, characterized in that: The invention comprises four support frames (1), the four support frames (1) are arranged in a ring at equal angles, a sampling drill (2) is arranged in the middle of the four support frames (1), the sampling drill (2) can continuously move downward under the action of rotation, the sampling drill (2) is arranged vertically, the sampling drill (2) is arranged through from top to bottom, a reduction motor (8) for driving the sampling drill (2) to rotate is arranged above the sampling drill (2), the middle of the four support frames (1) is connected to the reduction motor (8), and the sampling drill (2) is composed of a plurality of separation sleeves (10).

2. A geotechnical engineering survey sampling device according to claim 1, characterized in that: Two symmetrically arranged connecting grooves (12) are provided between the outer sides of adjacent separating sleeves (10), and a docking block (13) for connecting the two separating sleeves (10) is provided in the connecting groove (12).

3. A geotechnical engineering survey sampling device according to claim 2, characterized in that: The docking block (13) is arranged in an "I" shape, a fixing hole is provided on the outer side of the docking block (13) and extends to the other side, a bolt (14) is provided in the fixing hole, two bolts (14) in the docking block (13) are respectively connected to two different separation sleeves (10), and a protective cover (15) for protecting the docking block (13) is provided on the outer side of the docking block (13).

4. A geotechnical engineering survey sampling device according to claim 3, characterized in that: The outer side of the separation sleeve (10) is fixedly connected with a spiral thread strip (16), and the sampling drill (2) also includes a drill tooth sleeve (11), and the bottom of the drill tooth sleeve (11) is fixedly connected with a plurality of drill teeth for breaking rock formations. The drill tooth sleeve (11) is connected to the bottom of the separation sleeve (10) at the bottom, and the connection method between the drill tooth sleeve (11) and the separation sleeve (10) is the same as the connection method between the two separation sleeves (10).

5. A geotechnical engineering survey sampling device according to claim 4, characterized in that: The end of the support frame (1) is rotatably connected to a movable rail (4), the top of the reduction motor (8) is fixedly connected to a connecting platform (6), the top outer side of the connecting platform (6) is fixedly connected to four clamping blocks (7), and the clamping blocks (7) are slidably clamped to the movable rail (4).

6. A geotechnical engineering survey sampling device according to claim 5, characterized in that: The support frame (1) comprises two support rods (3), the two support rods (3) are rotatably connected to each other, the support rod (3) located at the top is rotatably connected to the outer side of the movable rail (4), the bottom of the support rod (3) located at the bottom is rotatably connected to a base, and the outer sides of the four movable rails (4) are sleeved with restraint rings (5).

7. A geotechnical engineering survey sampling device according to claim 6, characterized in that: The bottom of the reduction motor (8) is connected to two symmetrically arranged connection clamps (18), and the connection clamps (18) are used to fix the two sides of the top surface of the separation sleeve (10).

8. A geotechnical engineering survey sampling device according to claim 7, characterized in that: A transmission sleeve (9) is fixedly connected to the bottom of the reduction motor (8), and a transmission disc (20) is arranged on the inner ring of the transmission sleeve (9). Both the transmission disc (20) and the transmission sleeve (9) are made of magnetic material. A circular disc is fixedly connected to the bottom of the transmission disc (20), and the bottom of the transmission sleeve (9) is slidably engaged with the top surface of the circular disc.

9. A geotechnical engineering survey sampling device according to claim 8, characterized in that: The connecting fixture (18) comprises a fixing plate (21), the fixing plate (21) being fixedly connected to the outer side of the circular plate, the outer side of the fixing plate (21) being slidably connected to an adjusting plate (22), the outer side of the adjusting plate (22) being provided with an adjusting bolt (23) penetrating the adjusting plate (22) and the fixing plate (21), the adjusting bolt (23) being threadedly connected to both the adjusting plate (22) and the fixing plate (21).

10. A geotechnical engineering survey sampling device according to claim 9, characterized in that: An insertion rod (17) penetrating the transmission sleeve (9) and the transmission plate (20) is arranged on the outer side of the transmission sleeve (9), a thread groove is provided at the end of the insertion rod (17), and a nut (19) is threadedly connected to the outer side of the end of the insertion rod (17).

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