A drilling and sampling device for geotechnical engineering investigation and a method for using the device

Abstract

The present invention discloses a drilling and sampling device for geotechnical engineering investigation, including a box body. A second chute is provided on the inner wall of the box body. A first support plate is slidably connected to the inner side of the second chute. One side of the bottom of the first support plate is fixed with a second motor. One side of the bottom of the first support plate is fixed with two support blocks. The bottom of the support block is fixed with a second support plate slidably connected to the inner side of the second chute. One side of the bottom of the second support plate is fixed with a speed reducer. When a drilling device with a large weight needs to be moved, only the output shafts of multiple first motors drive the lead screws to rotate, so that the two limit blocks approach each other, and at the same time, the support rod pushes the fixed block downward, and at the same time, the connecting frame, the rotating shaft and the pulley move downward. When multiple pulleys abut against one side of the ground, the drilling device can be moved parallel at this time. The operation is simple and convenient, which improves the convenience of moving the drilling device and reduces the use cost of the drilling device.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, in particular to a drilling and acquisition equipment for geotechnical engineering survey and a method for using the equipment. Background Art

[0002] Before construction, it is necessary to drill and collect rock and soil. It is an important task to collect rock and soil samples for testing to understand the characteristics of the soil layer. Geotechnical testing is a general term for various tests conducted on rocks and soil for the purpose of engineering construction. Geotechnical testing is an important part of engineering geological survey, which is divided into sampling tests that separate rock and soil samples from the parent body and in-situ tests conducted directly on the rock and soil body.

[0003] Drilling is a basic means of geotechnical engineering investigation, and its results are the basic data for engineering geological evaluation, design and construction. The quality of drilling plays a decisive role in the quality of the entire geological investigation. The purpose of drilling is mainly to determine the stratum structure, soil type, layer thickness, uniformity, distribution of underlying soft and hard strata, find out the depth of groundwater, and take original or disturbed samples and in-situ tests in the hole to provide accurate and reliable basic engineering geological data for engineering design.

[0004] Some of the existing drilling equipment is heavy. When the drilling equipment needs to be moved, most of them need the assistance of lifting equipment to move, which makes the movement of the drilling equipment less convenient and leads to higher costs during geotechnical exploration and drilling.

[0005] After drilling, the existing rock and soil needs to be collected from multiple boreholes. When sampling some of the rock and soil, workers use collection tubes to directly insert them into the ground to collect samples, which results in high workload and low work efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a drilling and collection device for geotechnical engineering survey to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A drilling and collecting device for geotechnical engineering investigation, characterized in that it comprises a drilling device and a collecting device;

[0008] The drilling device includes a box body. A second chute is provided on the inner wall of the box body. A first support plate is slidably connected to the inner side of the second chute. On one side of the bottom of the first support plate, a second motor is fixed. On one side of the bottom of the first support plate, two support blocks are fixed. The bottom of the support block is fixed with a second support plate slidably connected to the inner side of the second chute. On one side of the bottom of the second support plate, a speed reducer is fixed. The output shaft end of the speed reducer is threadedly connected to a drill pipe. The bottom of the drill pipe is threadedly connected to a drill bit. The output shaft end of the second motor is fixed to the input shaft end of the speed reducer. On the top of the inner wall of the box body, a plurality of dampers are fixed. One side of the damper is located on the top of the first support plate. A plurality of springs are connected between the top of the first support plate and the inner side wall of the box body. A plurality of moving components are provided on one side of the box body;

[0009] The collection device includes a fixing frame. On the top of the fixing frame, a second electric push rod is fixed. The push rod end of the second electric push rod is fixed with a second support rod. On the bottom of the second support rod, a first cross plate is fixed. On the bottom of the first cross plate, a limiting frame is fixed. On the bottom of the limiting frame, a slip ring is fixed. Inside the inner wall of the limiting frame, a motor is fixed. The output shaft end of the motor is fixed to one side of the input shaft of the slip ring. The output shaft end of the slip ring is fixed to the top of the drill pipe. On the top of the inner wall of the fixing frame, two second sliding columns are fixed. On the bottom of the second sliding column, a limiting block is fixed. One side of the second sliding column movably penetrates through one side of the first cross plate. One side of the first cross plate is slidably connected to one side of the inner wall of the fixing frame. A plurality of heat dissipation holes are provided on the surface of the limiting frame. On one side of the bottom of the drill pipe, a sampling component is provided.

[0010] Preferably, the moving components include a plurality of support frames and a plurality of first motors. The output shaft end of the first motor is fixed with a lead screw. The lead screw is threadedly connected to two limiting blocks. On the top of the inner wall of the support frame, a first chute is provided. A slider is slidably connected to the inner side of the first chute. The bottom of the slider is fixed to the top of the limiting block.

[0011] Preferably, a support rod is hinged to one side of each limiting block. On one side of the bottom of the support rod, a fixing block is hinged.

[0012] Preferably, a connecting frame is fixed to one side of the fixing block. One side of the inner wall of the connecting frame is rotatably connected to a rotating shaft through a bearing. A pulley is fixed to the outside of the rotating shaft.

[0013] Preferably, a second cross plate is fixed to one side of the support frame. The bottom of the first motor is fixed to the top of the second cross plate. The top of the support frame is fixed to the bottom of the box body. One side of the lead screw is rotatably connected to the inner side wall of the support frame through a bearing.

[0014] Preferably, the sampling assembly includes a sampling box and a first electric push rod. A second chute is formed at the bottom of the sampling box. A bucket is hinged to the inner side wall of the second chute. A plurality of shovel teeth are fixed to one side of the bucket. Two baffles are fixed to the top of the bucket.

[0015] Preferably, a first support rod is fixed to the push rod end of the first electric push rod. A first sliding column is fixed to one side of the first support rod. A first chute is formed on one side of the baffle. The inner side of the first chute is slidably connected to one side of the first sliding column.

[0016] Preferably, a connecting block is fixed to the top of the sampling box. The top of the connecting block is threadedly connected to the bottom of the drill pipe.

[0017] Preferably, a switch is fixed to one side of the fixing frame. The output end of the switch is electrically connected to the input end of the electric slip ring. The output end of the electric slip ring is electrically connected to the input end of the first electric push rod. One side of the first electric push rod is fixed to one side of the top of the sampling box. One side of the first support rod movably penetrates through one side of the top of the sampling box. The drill pipe is rotatably connected to one side of the limit frame of the sampling box through a bearing.

[0018] To achieve the above object, the present invention also provides the following technical solution: A use method of a drilling and collecting device for geotechnical engineering exploration, and its steps are as follows:

[0019] (1) When it is necessary to drill the rock and soil during engineering exploration, first hoist the drilling device to the position where drilling is required;

[0020] (2) When it is necessary to drill the shallow rock and soil, first, under the action of the threaded drill bit and multiple drill pipes, connect multiple drill pipes to one side of the output shaft of the reducer according to the drilling depth. At the same time, the bottom of the lowermost drill pipe is threadedly connected to the drill bit;

[0021] (3) According to the preset drilling depth, use drill pipes of different lengths to lengthen the drill bit for drilling the rock and soil. At the same time, when the drill bit drills, the elastic force of the spring pushes the drill bit to abut against one side of the rock and soil layer. At the same time, under the action of the spring and the damper, the vibration generated when the drill bit drills is absorbed;

[0022] (4) When it is necessary to drill the rock and soil at different positions, move the drilling device parallel;

[0023] (5) Drive the lead screw to rotate through the output shaft of the first motor. Since the lead screw is a bidirectional lead screw, while the lead screw rotates, drive the two limit blocks connected by threads to approach each other;

[0024] (6) While the two limiting blocks approach each other, the support rod 2 is made to push the fixed block downward, and at the same time, the connecting frame, the rotating shaft, and the pulley are made to move downward, so that a plurality of pulleys abut against one side of the ground;

[0025] (7) At this time, the drilling device can be moved parallelly to drill other positions with the drilling device;

[0026] (8) After drilling a hole of a preset depth in the rock formation through the drilling equipment, the geotechnical sample is collected at the drilling hole by using the collection device;

[0027] (9) Connect the drill bit on the collection equipment to the drill pipe. At this time, the output shaft of the motor drives the drill pipe to rotate, and at the same time drives the thread-connected drill bit to drill the geotechnical at the preset drilling depth;

[0028] (10) After the geotechnical drilling is completed, thread-connect the connecting block at the top of the sampling box to the bottom of the drill pipe. At this time, the push rod end of the second electric push rod pushes the second support rod downward, and at the same time makes the first cross plate slide outside the second sliding column, so that the cylindrical sampling box extends into the inside of the drilled hole;

[0029] (11) When the bottom of the sampling box is at the bottom of the drill hole, press the switch to control the push rod end of the first electric push rod to extend. At the same time, the push rod end pushes the first support rod downward, and at the same time makes the first sliding column slide inside the first sliding groove. At this time, the bucket rotates around the hinge point on the inner wall side of the second sliding groove, so that the shovel teeth on one side of the bucket abut against the top of the rock and soil layer at the bottom of the drill bit. At this time, the push rod end of the second electric push rod continues to extend, and at the same time makes the motor rotate at a low speed. At this time, the motor drives the sampling box to rotate. Under the push of the first electric push rod and at the same time under the action of the bucket and the shovel teeth, the rock and soil layer is taken into the inside of the sampling box.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] First, when engineering exploration requires drilling of geotechnical, the power of the first motor is decelerated and torque-increased under the action of the speed reducer. At the same time, the output shaft of the speed reducer drives the drill pipe and the drill bit to drill. At the same time, under the action of the spring and the damper, the vibration generated during the drilling of the drill bit is absorbed, avoiding the vibration conduction to the box body and causing large vibration of the drilling equipment, and improving the comfort around the drilling equipment.

[0032] Second, when a drilling device with a large weight needs to be moved, only the output shafts of multiple first motors drive the lead screws to rotate, causing two limit blocks to approach each other. At the same time, the support rod pushes the fixed block downward, and at the same time, the connecting frame, the rotating shaft, and the pulley move downward. When multiple pulleys contact one side of the ground, the drilling device can be moved parallel at this time. The operation is simple and convenient, improving the convenience of moving the drilling device and reducing the use cost of the drilling device.

[0033] Third, the sampling box is driven to rotate at a low speed by the motor and enters the inner side of the drilled hole in the rock and soil when the first electric push rod pushes downward. At the same time, under the downward pushing action of the pushing end of the first electric push rod, the rock and soil enter the sampling box under the action of the bucket and the shovel teeth. The operation is simple and convenient. It is not necessary for workers to manually use a sampling shovel to collect rock and soil from multiple rock and soil holes, reducing the working intensity of workers and improving the working efficiency of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic main view sectional structure diagram of the drilling device;

[0035] Figure 2 It is a schematic main view structure diagram of the drilling device;

[0036] Figure 3 It is a schematic sectional structure diagram at the moving component of the drilling device;

[0037] Figure 4 It is a schematic three-dimensional structure diagram of the connecting frame of the drilling device.

[0038] Figure 5 It is a schematic main view sectional structure diagram of the collection device;

[0039] Figure 6 It is a schematic main view structure diagram of the collection device;

[0040] Figure 7 It is a schematic sectional structure diagram at the sampling component of the collection device;

[0041] Figure 8 It is a schematic top view structure diagram of the bucket of the collection device;

[0042] Figure 9 It is a schematic three-dimensional structure diagram of the sampling box of the collection device

[0043] In the figure: 1, box body; 2, moving component; 21, support frame; 22, first motor; 23, second cross plate; 24, limiting block; 25, lead screw; 26, first chute; 27, slider; 28, support rod; 29, connecting frame; 210, fixed block; 211, pulley; 212, rotating shaft; 3, second motor; 4, first support plate; 5, spring; 6, damper; 7, second chute; 8, second support plate; 9, speed reducer; 10, drill bit; 11, drill pipe; 12, support block; 13, fixing frame; 14, sampling component; 141, sampling box; 142, baffle; 143, first electric push rod; 144, bucket; 145, bucket teeth; 146, first support rod; 147, first chute; 148, first sliding column; 149, second chute; 1410, connecting block; 1411, switch; 15, second electric push rod; 16, second support rod; 17, second sliding column; 18, limiting frame; 19, motor; 20, drill pipe; 30, limiting block; 31, first cross plate; 32, heat dissipation holes; 33, electric slip ring. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment

[0046] Please refer to Figures 1-4, the present invention provides a technical solution: a drilling and sampling device for geotechnical engineering investigation, including a box body 1. A second chute 7 is provided on the inner wall of the box body 1. A first support plate 4 is slidably connected to the inner side of the second chute 7. A second motor 3 is fixed to one side of the bottom of the first support plate 4. Two support blocks 12 are fixed to one side of the bottom of the first support plate 4. A second support plate 8 slidably connected to the inner side of the second chute 7 is fixed to the bottom of the support block 12. A speed reducer 9 is fixed to one side of the bottom of the second support plate 8. A drill rod 11 is threadedly connected to the output shaft end of the speed reducer 9. According to the depth of drilling, a plurality of drill rods 11 are connected to one side of the output shaft of the speed reducer 9. At the same time, a drill bit 10 is threadedly connected to the bottom of the lowermost drill rod 11. According to the depth of drilling, drill rods 11 of different lengths are used to lengthen the drill bit 10. The drill rod 11 is threadedly connected to the drill bit 10 at the bottom. The output shaft end of the second motor 3 is fixed to the input shaft end of the speed reducer 9. A plurality of dampers 6 are fixed to the top of the inner wall of the box body 1. One side of the damper 6 is located at the top of the first support plate 4. A plurality of springs 5 are connected between the top of the first support plate 4 and the inner side wall of the box body 1. A plurality of moving components 2 are provided on one side of the box body 1. The elastic force of the spring 5 pushes the drill bit 10 to abut against one side of the rock and soil layer. At the same time, under the action of the spring 5 and the damper 6, the vibration generated during the drilling of the drill bit 10 is absorbed, avoiding the vibration conduction to the box body 1 and causing large vibration of the drilling equipment, and improving the comfort around the drilling equipment.

[0047] The moving component 2 includes a plurality of support frames 21 and a plurality of first motors 22. A lead screw 25 is fixed to the output shaft end of the first motor 22. The lead screw 25 is threadedly connected to two limit blocks 24. The lead screw 25 is a bidirectional lead screw, which can make the two limit blocks 24 approach or move away from each other when rotating. A first chute 26 is provided on the top of the inner wall of the support frame 21. A slider 27 is slidably connected to the inner side of the first chute 26. The bottom of the slider 27 is fixed to the top of the limit block 24. The slider 27 slides on the inner side wall of the first chute 26, making the sliding of the slider 27 more stable. At the same time, it guides the horizontal movement of the limit block 24. Support rods 28 are hinged to one side of each limit block 24. A fixed block 210 is hinged to one side of the bottom of the support rod 28. The bottom of the fixed block 210 pushes the connecting frame 29 to rise or fall, making the pulley 211 move downward, so that a plurality of pulleys 211 abut against one side of the ground. At this time, the drilling equipment can be moved parallelly. A connecting frame 29 is fixed to one side of the fixed block 210. A rotating shaft 212 is rotatably connected to one side of the inner wall of the connecting frame 29 through a bearing. A pulley 211 is fixed to the outside of the rotating shaft 212. The operation is simple and convenient, improving the convenience of moving the drilling equipment. A second cross plate 23 is fixed to one side of the support frame 21. The bottom of the first motor 22 is fixed to the top of the second cross plate 23. The top of the support frame 21 is fixed to the bottom of the box body 1. One side of the lead screw 25 is rotatably connected to the inner side wall of the support frame 21 through a bearing.

[0048] Working principle: When it is necessary to drill into geotechnical materials during engineering exploration, first hoist this drilling equipment to the position where drilling is required. When drilling into shallow geotechnical materials, first, under the action of the drill bit 10 connected by threads and multiple drill pipes 11, connect multiple drill pipes 11 to one side of the output shaft of the reduction gear 9 according to the drilling depth. At the same time, the bottom of the lowermost drill pipe 11 is threadedly connected to the drill bit 10. According to the drilling depth, use drill pipes 11 of different lengths to extend the drill bit 10 for drilling into geotechnical materials. At the same time, when the drill bit 10 is drilling, the elastic force of the spring 5 pushes the drill bit 10 to act against one side of the rock and soil layer. At the same time, under the action of the spring 5 and the damper 6, the vibration generated during the drilling of the drill bit 10 is absorbed, preventing the vibration from being transmitted to the box body 1 and causing large vibrations of the drilling equipment, and improving the comfort around the drilling equipment.

[0049] When conducting engineering exploration of geotechnical materials, it is necessary to drill into geotechnical materials at different positions. Because the drilling equipment is heavy, when it is necessary to move it parallelly by a small distance, a crane is often needed for hoisting and moving, resulting in a high cost for geotechnical drilling. When it is necessary to move the drilling equipment parallelly, only need to drive the lead screw 25 to rotate by the output shaft of the first motor 22. Since the lead screw 25 is a bidirectional lead screw, when the lead screw 25 rotates, it drives the two limit blocks 24 connected by threads to approach each other. While the two limit blocks 24 are approaching, the support rod 28 is made to push the fixed block 210 downward, and at the same time, the connecting frame 29, the rotating shaft 212, and the pulley 211 are made to move downward, so that multiple pulleys 211 abut against one side of the ground. At this time, the drilling equipment can be moved parallelly, with simple and convenient operation, improving the convenience of moving the drilling equipment and reducing the use cost of the drilling equipment.

[0050] Please refer to Figures 5-9, the acquisition device includes a fixing frame 13. A second electric push rod 15 is fixed to the top of the fixing frame 13. The push rod end of the second electric push rod 15 is fixed with a second support rod 16. The push rod end of the second electric push rod 15 pushes the second support rod 16 to move downward. At the same time, the first horizontal plate 31 slides outside the second sliding column 17, and at the same time, the cylindrical sampling box 141 extends into the drilled hole completed by drilling. A first horizontal plate 31 is fixed to the bottom of the second support rod 16. A limiting frame 18 is fixed to the bottom of the first horizontal plate 31. An electric slip ring 33 is fixed to the bottom of the limiting frame 18. The electric slip ring 33 is used to provide power transmission for the first electric push rod 143, avoiding the phenomenon of wire entanglement and making the power supply of the first electric push rod 143 more stable. A motor 19 is fixed to the inner wall of the limiting frame 18. The output shaft end of the motor 19 is fixed to one side of the input shaft of the electric slip ring 33. The output shaft end of the electric slip ring 33 is fixed to the top of the drill pipe 20. Two second sliding columns 17 are fixed to the top of the inner wall of the fixing frame 13. A limiting block 30 is fixed to the bottom of the second sliding column 17. One side of the second sliding column 17 movably penetrates through one side of the first horizontal plate 31. One side of the first horizontal plate 31 is slidably connected to one side of the inner wall of the fixing frame 13. A number of heat dissipation holes 32 are formed on the surface of the limiting frame 18. The heat dissipation holes 32 are holes for dissipating heat from the motor 19. A sampling assembly 14 is provided on one side of the bottom of the drill pipe 20.

[0051] The sampling assembly 14 includes a sampling box 141 and a first electric push rod 143. A second chute 149 is formed at the bottom of the sampling box 141. A bucket 144 is hinged to the inner side wall of the second chute 149. The bucket 144 rotates around the hinge point with the inner wall side of the second chute 149, so that the shovel teeth 145 on one side of the bucket 144 abut against the top of the rock and soil layer at the bottom of the drill bit. At this time, the rock and soil can be collected. A number of shovel teeth 145 are fixed on one side of the bucket 144. Two baffles 142 are fixed on the top of the bucket 144. The baffles 142 prevent the rock and soil from leaking from both sides of the baffles 142 during collection. The push rod end of the first electric push rod 143 is fixed with a first support rod 146. A first sliding column 148 is fixed on one side of the first support rod 146. The first sliding column 148 slides inside the first chute 147 to push the bucket 144 to move downward. A first chute 147 is formed on one side of the baffle 142. The inner side of the first chute 147 is slidably connected to one side of the first sliding column 148. A connecting block 1410 is fixed on the top of the sampling box 141. The top of the connecting block 1410 is threadedly connected to the bottom of the drill pipe 20. The connecting block 1410 is threadedly connected to the drill pipe 20. When the drill pipe 20 rotates, the connecting block 1410 will not become loose. A switch 1411 is fixed on one side of the fixing frame 13. The output end of the switch 1411 is electrically connected to the input end of the electric slip ring 33. The output end of the electric slip ring 33 is electrically connected to the input end of the first electric push rod 143. One side of the first electric push rod 143 is fixed to one side of the top of the sampling box 141. One side of the first support rod 146 movably penetrates through one side of the top of the sampling box 141. The drill pipe 20 is rotatably connected to one side of the limit frame 18 of the sampling box 141 through a bearing. When the rock and soil sampling is completed, the push rod end of the first support rod 146 retracts, so that the bucket 144 rotates back inside the second chute 149. At this time, the second electric push rod 15 retracts, driving the sampling box 141 to rise, completing the sampling of the rock and soil.

[0052] Working principle: When conducting geotechnical exploration, first connect the drill bit to the drill pipe 20. At this time, the output shaft of the motor 19 drives the drill pipe 20 to rotate, and at the same time drives the screw-connected drill bit to drill the rock and soil. After the rock and soil drilling is completed, thread-connect the connecting block 1410 at the top of the sampling box 141 to the bottom of the drill pipe 20. At this time, the push rod end of the second electric push rod 15 pushes the second support rod 16 to move downward, and at the same time makes the first cross plate 31 slide outside the second sliding column 17, so that the cylindrical sampling box 141 extends into the drilled hole after drilling. When the bottom of the sampling box 141 is located at the bottom of the drilled hole, press the switch 1411 to control the push rod end of the first electric push rod 143 to extend. At the same time, the push rod end pushes the first support rod 146 to move downward, and at the same time makes the first sliding column 148 slide inside the first sliding groove 147. At this time, the bucket 144 rotates around the hinge point on the inner wall side of the second sliding groove 149, so that the cutting teeth 145 on one side of the bucket 144 abut against the top of the rock and soil layer at the bottom of the drill bit. At this time, the push rod end of the second electric push rod 15 continues to extend, and at the same time makes the motor 19 rotate at a low speed. At this time, the motor 19 drives the sampling box 141 to rotate. Under the drive of the first electric push rod 143 and the action of the bucket 144 and the cutting teeth 145, the rock and soil layer is collected into the sampling box 141. The operation is simple and convenient. There is no need for workers to manually use a sampling shovel to collect rock and soil, which reduces the working intensity of workers and improves the working efficiency of workers.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling and sampling device for geotechnical engineering investigation, Characterized in that: It includes a drilling device and a sampling device; The drilling device includes a box body, a second chute is opened on the inner wall of the box body, a first support plate is slidably connected to the inner side of the second chute, a second motor is fixed on one side of the bottom of the first support plate, and two support blocks are fixed on one side of the bottom of the first support plate. The bottom of the support block is fixed with a second support plate slidably connected to the inner side of the second chute. A speed reducer is fixed on one side of the bottom of the second support plate. The output shaft end of the speed reducer is threadedly connected with a drill pipe, and the bottom of the drill pipe is threadedly connected with a drill bit. The output shaft end of the second motor is fixed to the input shaft end of the speed reducer. A plurality of dampers are fixed on the top of the inner wall of the box body, and one side of the damper is located on the top of the first support plate. A plurality of springs are connected between the top of the first support plate and the inner side wall of the box body. A plurality of moving components are arranged on one side of the box body; The sampling device includes a fixing frame, a second electric push rod is fixed on the top of the fixing frame, a second support rod is fixed on the push rod end of the second electric push rod, a first cross plate is fixed on the bottom of the second support rod, a limiting frame is fixed on the bottom of the first cross plate, a slip ring is fixed on the bottom of the limiting frame, and a motor is fixed on the inner wall of the limiting frame. The output shaft end of the motor is fixed to one side of the input shaft of the slip ring, and the output shaft end of the slip ring is fixed to the top of the drill pipe. Two second sliding columns are fixed on the top of the inner wall of the fixing frame, a limiting block is fixed on the bottom of the second sliding column, and one side of the second sliding column movably penetrates through one side of the first cross plate. One side of the first cross plate is slidably connected to one side of the inner wall of the fixing frame. A plurality of heat dissipation holes are opened on the surface of the limiting frame, and a sampling component is arranged on one side of the bottom of the drill pipe; The moving component includes a plurality of support frames and a plurality of first motors. The output shaft end of the first motor is fixed with a lead screw, and two limiting blocks are threadedly connected to the lead screw. A first chute is opened on the top of the inner wall of the support frame, and a slider is slidably connected to the inner side of the first chute. The bottom of the slider is fixed to the top of the limiting block. One side of each limiting block is hinged with a support rod, and one side of the bottom of the support rod is hinged with a fixing block, One side of the fixing block is fixed with a connecting frame, and a rotating shaft is rotatably connected to one side of the inner wall of the connecting frame through a bearing, and a pulley is fixed on the outer side of the rotating shaft; The sampling component includes a sampling box and a first electric push rod. A second chute is opened on the bottom of the sampling box, a bucket is hinged to the inner side wall of the second chute, a plurality of shovel teeth are fixed on one side of the bucket, and two baffles are fixed on the top of the bucket, The push rod end of the first electric push rod is fixed with a first support rod, a first sliding column is fixed on one side of the first support rod, a first chute is opened on one side of the baffle, and the inner side of the first chute is slidably connected to one side of the first sliding column, A connecting block is fixed on the top of the sampling box, and the top of the connecting block is threadedly connected to the bottom of the drill pipe.

2. The drilling and sampling device for geotechnical engineering investigation according to claim 1, Characterized in that: A second cross plate is fixed to one side of the support frame. The bottom of the first motor is fixed to the top of the second cross plate. The top of the support frame is fixed to the bottom of the box body. One side of the lead screw is rotatably connected to the inner side wall of the support frame through a bearing.

3. A drilling and sampling device for geotechnical engineering investigation according to claim 2, characterized in that: A switch is fixed to one side of the fixing frame. The output end of the switch is electrically connected to the input end of the electric slip ring. The output end of the electric slip ring is electrically connected to the input end of the first electric push rod. One side of the first electric push rod is fixed to one side of the top of the sampling box. One side of the first support rod movably penetrates through one side of the top of the sampling box. The drill rod is rotatably connected to one side of the limit frame of the sampling box through a bearing.

4. A method for using a drilling and sampling device for geotechnical engineering investigation, characterized in that using the drilling and sampling device according to claim 3, and the using steps are as follows: (1) When it is necessary to drill geotechnical soil during engineering exploration, first hoist the drilling device to the position where drilling is required; (2) When it is necessary to drill shallow geotechnical soil, first, under the action of the threaded drill bit and multiple drill rods, connect multiple drill rods to one side of the output shaft of the speed reducer according to the drilling depth. At the same time, the bottom of the lowermost drill rod is threadedly connected to the drill bit; (3) According to the preset drilling depth, use drill rods of different lengths to lengthen the drill bit for drilling the geotechnical soil. At the same time, when the drill bit drills, the elastic force of the spring pushes the drill bit to abut against one side of the rock and soil layer. At the same time, under the action of the spring and the damper, the vibration generated during the drilling of the drill bit is absorbed; (4) When it is necessary to drill geotechnical soil at different positions, move the drilling device parallelly; (5) Drive the lead screw to rotate through the output shaft of the first motor. Since the lead screw is a bidirectional lead screw, while the lead screw rotates, drive the two limit blocks connected by threads to approach each other; (6) While the two limit blocks approach, make the support rod push the fixed block downward, and at the same time make the connecting frame, the rotating shaft and the pulley move downward, so that multiple pulleys abut against one side of the ground; (7) At this time, the drilling device can be moved parallelly to drill other positions with the drilling device; (8) After the drilling device completes a drilling hole with a preset depth in the rock formation, use the sampling device to collect geotechnical samples at the drilling hole; (9) Connect the drill bit on the sampling device to the drill rod. At this time, the output shaft of the motor drives the drill rod to rotate, and at the same time drives the threadedly connected drill bit to drill the geotechnical soil at the preset drilling depth; (10) After the geotechnical drilling is completed, threadedly connect the connecting block on the top of the sampling box to the bottom of the drill rod. At this time, the push rod end of the second electric push rod pushes the second support rod downward, and at the same time makes the first cross plate slide on the outside of the second sliding column, so that the cylindrical sampling box extends into the drilled hole after drilling; (11) When the bottom of the sampling box is located at the bottom of the borehole, press the switch at this time to control the push rod end of the first electric push rod to extend. At the same time, the push rod end pushes the first support rod downward, and at the same time makes the first sliding column slide inside the first sliding groove. At this time, the bucket rotates around the hinge point on the inner side of the second sliding groove wall, so that the cutting teeth on one side of the bucket abut against the top of the rock and soil layer at the bottom of the drill bit. At this time, the push rod end of the second electric push rod continues to extend, and at the same time makes the motor rotate at a low speed. At this time, the motor drives the sampling box to rotate. Under the push of the first electric push rod, and at the same time under the action of the bucket and the cutting teeth, the rock and soil layer is collected into the interior of the sampling box.

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