A sampling and testing device for geotechnical engineering exploration

Abstract

The present invention relates to the technical field of geotechnical engineering exploration, and particularly relates to a sampling and testing device for geotechnical engineering exploration, including a chassis, a frame, guide rods, a sliding plate, a screw motor, etc. The top of the chassis is connected to the frame, the top of the chassis is connected to the guide rods, the guide rods are connected to the frame, the sliding plate is slidably connected to the guide rods, the screw motor is installed on the top of the frame, the screw of the screw motor is rotatably connected to the top of the chassis, and the screw of the screw motor is threadedly connected to the sliding plate. Through the screw motor of the present invention, the drill rod and the core bit can be driven to move downward, the core bit is drilled into the soil, the soil will enter the drill rod, and the soil is sampled. Through the electric guide rail, the drill rod can be moved directly below the installation shaft, and the electric guide rail can also remove the drill rod and clamp the removed drill rod between two elastic clamping blocks, automatically installing and disassembling the drill rod, thereby improving the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical sampling, and particularly relates to a sampling and testing device for geotechnical engineering exploration. Background Art

[0002] Geotechnical engineering exploration is an essential and important link in the early stage of various engineering constructions. By obtaining representative soil samples and conducting laboratory tests and on-site tests on them, the physical, mechanical, and chemical property indexes of geotechnical materials can be accurately determined.

[0003] Geotechnical exploration sampling is mainly carried out by a drilling rig. The drilling rig inserts the drill pipe into the soil, and the soil will enter the drill pipe, thereby sampling the soil. As the drilling depth increases, it is necessary to continuously install drill pipes to extend the working depth. The drill pipes are connected by threads, and the drill pipes are relatively heavy. When installing the drill pipes, multiple workers need to cooperate with each other. When disassembling the drill pipes, multiple workers also need to cooperate with each other, which consumes a large amount of time and results in low work efficiency. Summary of the Invention

[0004] In order to overcome the drawbacks that when installing drill pipes, multiple workers need to cooperate with each other, and when disassembling drill pipes, multiple workers also need to cooperate with each other, which consumes a large amount of time and results in low work efficiency, the present invention provides a sampling and testing device for geotechnical engineering exploration.

[0005] The technical solution of the present invention is: A sampling and testing device for geotechnical engineering exploration, comprising a chassis, a frame, a guide rod, a slide plate, a lead screw motor, a servo motor, a mounting shaft, a drill pipe, a core bit, a loading and unloading mechanism, and a fixing mechanism. The top of the chassis is connected with the frame. The top of the chassis is connected with the guide rod. The guide rod is connected with the frame. The slide plate is slidably connected to the guide rod. The lead screw motor is installed on the top of the frame. The lead screw of the lead screw motor is rotatably connected to the top of the chassis. The lead screw of the lead screw motor is threadedly connected to the slide plate. The servo motor is installed on the slide plate. The output shaft of the servo motor is connected with the mounting shaft. The lower end of the mounting shaft is threadedly connected with the drill pipe. The lower end of the drill pipe is threadedly connected with the core bit. The loading and unloading mechanism is used for installing and disassembling the drill pipe. The fixing mechanism is used for fixing the drill pipe on the mounting shaft.

[0006] Furthermore, the loading and unloading mechanism includes a mounting frame, a rotating shaft, sprockets, chains, connecting blocks, elastic clamping blocks, an electric guide rail, a moving frame, a cylinder, a moving block, a rotating plate, a first sliding shaft, clamping plates, and a rotating assembly. The mounting frame is connected to the top of the chassis. The rotating shafts are symmetrically and rotatably connected to the front and back on both the left and right sides of the mounting frame. The upper and lower parts of the rotating shafts are connected with sprockets. Chains are wound around the four upper sprockets and the four lower sprockets. The chains are evenly spaced with connecting blocks connected thereto. Two elastic clamping blocks for clamping the drill pipe are connected to each connecting block. The electric guide rail is installed on the mounting frame. The top of the slider of the electric guide rail is connected with the moving frame. The cylinder is installed on the top of the moving frame. The telescopic rod of the cylinder is connected with the moving block. First inclined openings are formed on both the left and right sides of the moving block. The rotating plates are hinged to both the left and right sides of the moving frame. The first sliding shafts are connected to the tops of the rotating plates. The first sliding shafts are located within the first inclined openings. Clamping plates for clamping the drill pipe are connected to the rotating plates. The rotating assembly is used to control the rotation of the elastic clamping blocks.

[0007] Furthermore, the rotating assembly includes a gear, a connecting plate, and a rack. The gear is connected to the front left rotating shaft through a one-way clutch. The connecting plate is connected to the slider of the electric guide rail. The rack is connected to the connecting plate. The rack will engage with the gear during the forward movement and drive the gear to rotate. The gear drives the front left rotating shaft to rotate. The front left rotating shaft drives the elastic clamping blocks to rotate.

[0008] Furthermore, the fixing mechanism includes an annular plate, a first electric push rod, and a clamping block. A clamping groove is formed on the drill pipe. The annular plate is connected to the mounting shaft. The first electric push rod is connected to the annular plate. The clamping block is connected to the telescopic rod of the first electric push rod. The clamping block can be inserted into the clamping groove to fix the drill pipe on the mounting shaft.

[0009] Furthermore, a guiding mechanism is also included. The guiding mechanism includes a fixing frame and a guiding ring. The fixing frame is connected to the top of the chassis. The guiding ring for guiding the drill pipe is connected to the fixing frame.

[0010] Furthermore, a stabilizing mechanism is also included. The stabilizing mechanism includes a second electric push rod, a moving plate, a plug rod, and a second sliding shaft. The second electric push rod is installed on the top of the chassis. The telescopic rod of the second electric push rod is connected with the moving plate. A second inclined opening is formed on the moving plate. The plug rod is slidably connected to the fixing frame. The second sliding shaft is connected to the plug rod. The second sliding shaft is located within the second inclined opening. A plug slot is formed on the drill pipe. The plug rod can be inserted into the plug slot to fix the drill pipe.

[0011] Furthermore, a first telescopic tube and a second telescopic tube are also included. A first telescopic tube for protecting the lead screw of the lead screw motor is connected between the sliding plate and the chassis. The lead screw of the lead screw motor is located within the first telescopic tube. A second telescopic tube for protecting the lead screw of the lead screw motor is connected between the sliding plate and the frame. The lead screw of the lead screw motor is located within the second telescopic tube.

[0012] Furthermore, it further includes an annular support plate, and an annular support plate for supporting the drill pipe is connected to the mounting frame.

[0013] The beneficial effects are as follows: 1. In the present invention, the lead screw motor can drive the drill pipe and the core bit to move downward, drill the core bit into the soil, the soil will enter the drill pipe, and soil sampling is carried out. The drill pipe can be moved to directly below the mounting shaft through the electric guide rail. The electric guide rail can also remove the drill pipe and clamp the removed drill pipe between two elastic clamping blocks, automatically installing and disassembling the drill pipe, thereby improving work efficiency.

[0014] 2. When the telescopic rod of the second electric push rod extends, it can drive the moving plate to move backward, thereby driving the two insertion rods to move towards each other and inserting the insertion rods into the insertion slots, so as to fix the drill pipe in the soil and prevent the drill pipe in the soil from sliding downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The three-dimensional structural schematic diagram of the present invention is shown.

[0016] Figure 2 The three-dimensional structural schematic diagram of the loading and unloading mechanism of the present invention is shown.

[0017] Figure 3 The three-dimensional structural schematic diagram of the sprocket, chain, connecting block and elastic clamping block of the present invention is shown.

[0018] Figure 4 The three-dimensional structural schematic diagram of the moving frame, cylinder, moving block, rotating plate and clamping plate of the present invention is shown.

[0019] Figure 5 The three-dimensional structural schematic diagram of the moving block, first inclined opening and first sliding shaft of the present invention is shown.

[0020] Figure 6 The three-dimensional structural schematic diagram of the gear, connecting plate and rack of the present invention is shown.

[0021] Figure 7 The three-dimensional structural schematic diagram of the fixing mechanism of the present invention is shown.

[0022] Figure 8 The three-dimensional structural schematic diagram of the card slot and the insertion slot of the present invention is shown.

[0023] Figure 9 The first three-dimensional structural schematic diagram of the guiding mechanism and the stabilizing mechanism of the present invention is shown.

[0024] Figure 10 The second three-dimensional structural schematic diagram of the guiding mechanism and the stabilizing mechanism of the present invention is shown.

[0025] Figure 11The three-dimensional structural schematic diagram of the first telescopic pipe and the second telescopic pipe of the present invention is shown.

[0026] Names and serial numbers of components in the figure: 1 - chassis, 2 - frame, 3 - guide rod, 4 - slide plate, 5 - lead screw motor, 6 - servo motor, 7 - mounting shaft, 8 - drill pipe, 9 - core bit, 10 - mounting bracket, 11 - rotating shaft, 12 - sprocket, 13 - chain, 14 - connecting block, 15 - elastic clamping block, 17 - electric guide rail, 18 - moving frame, 19 - cylinder, 20 - moving block, 21 - first inclined opening, 22 - rotating plate, 23 - first sliding shaft, 24 - clamping plate, 25 - gear, 26 - connecting plate, 27 - rack, 28 - card slot, 29 - annular plate, 30 - first electric push rod, 31 - clamping block, 32 - fixing frame, 33 - guide ring, 34 - second electric push rod, 35 - moving plate, 36 - second inclined opening, 37 - inserting rod, 38 - second sliding shaft, 39 - inserting slot, 40 - first telescopic pipe, 41 - second telescopic pipe, 42 - annular support plate. Detailed implementation manners

[0027] The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] As Figures 1 - 8 shown, a sampling and detection device for geotechnical engineering exploration includes a chassis 1, a frame 2, a guide rod 3, a slide plate 4, a lead screw motor 5, a servo motor 6, a mounting shaft 7, a drill pipe 8, a core bit 9, a loading and unloading mechanism, and a fixing mechanism. The rear side of the top of the chassis 1 is connected to the frame 2 by bolts. Both the left and right sides of the top of the chassis 1 are connected with guide rods 3. The upper ends of the two guide rods 3 are both connected to the frame 2. A slide plate 4 is slidably connected to the two guide rods 3 together. The lead screw motor 5 is installed on the top of the frame 2 by bolts. The lower end of the lead screw of the lead screw motor 5 is rotationally connected to the rear side of the top of the chassis 1. The lead screw of the lead screw motor 5 is threadedly connected to the slide plate 4. The servo motor 6 is installed in the middle of the front side of the slide plate 4 by bolts. The output shaft of the servo motor 6 is connected with a mounting shaft 7. The lower end of the mounting shaft 7 is threadedly connected with a drill pipe 8. The lower end of the drill pipe 8 is threadedly connected with a core bit 9. The loading and unloading mechanism is used for installing and disassembling the drill pipe 8, and the fixing mechanism is used for fixing the drill pipe 8 on the mounting shaft 7.

[0029] As Figures 1 - 6As shown in the figure, the loading and unloading mechanism includes a mounting frame 10, a rotating shaft 11, a sprocket 12, a chain 13, a connecting block 14, an elastic clamping block 15, an electric guide rail 17, a moving frame 18, a cylinder 19, a moving block 20, a rotating plate 22, a first sliding shaft 23, a clamping plate 24 and a rotating assembly. At the front side of the top of the chassis 1, the mounting frame 10 is connected by bolts. On both the left and right sides of the mounting frame 10, the rotating shafts 11 are symmetrically rotatably connected in the front and rear. On both the upper and lower parts of the rotating shaft 11, sprockets 12 are connected by keys. Chains 13 are wound around the four sprockets 12 above and the four sprockets 12 below. Connecting blocks 14 are evenly spaced and connected to the chains 13. Two elastic clamping blocks 15 are connected to each connecting block 14. In the middle of the mounting frame 10, the electric guide rail 17 is installed by bolts. The top of the slider of the electric guide rail 17 is connected to the moving frame 18. At the rear side of the top of the moving frame 18, the cylinder 19 is installed by bolts. The rear end of the telescopic rod of the cylinder 19 is connected to the moving block 20. First inclined openings 21 are opened on both the left and right sides of the moving block 20. On both the left and right sides at the rear of the moving frame 18, the rotating plates 22 are hinged. The first sliding shafts 23 are connected to the tops of the rotating plates 22. The two first sliding shafts 23 are respectively located in the two first inclined openings 21. The clamping plates 24 are connected to the rear sides of the rotating plates 22. The rotating assembly is used to control the rotation of the elastic clamping blocks 15.

[0030] As Figure 6 shown in the figure, the rotating assembly includes a gear 25, a connecting plate 26 and a rack 27. In the middle of the rotating shaft 11 at the front left, the gear 25 is connected by a one-way clutch. On the left side of the slider of the electric guide rail 17, the connecting plate 26 is connected by bolts. On the left side of the connecting plate 26, the rack 27 is connected by bolts. The rack 27 will mesh with the gear 25 during the forward movement.

[0031] As Figure 7 and Figure 8 shown in the figure, the fixing mechanism includes an annular plate 29, a first electric push rod 30 and a clamping block 31. On both the left and right sides of the upper part of the drill rod 8, clamping grooves 28 are opened. The annular plate 29 is connected to the lower part of the mounting shaft 7. On both the left and right sides of the bottom of the annular plate 29, the first electric push rods 30 are connected by bolts. The clamping blocks 31 are connected to the telescopic rods of the first electric push rods 30. The clamping blocks 31 are located in the clamping grooves 28.

[0032] As Figure 2 shown in the figure, it further includes an annular support plate 42. The annular support plate 42 is connected to the lower part of the mounting frame 10 by bolts.

[0033] Initially, the telescopic rod of the first electric push rod 30 is in the extended state, the clamping block 31 is inserted into the card slot 28, the drill pipe 8 is fixed on the mounting shaft 7, the telescopic rod of the air cylinder 19 is in the extended state, and the clamping plate 24 is in the closed state; the staff starts the servo motor 6, the output shaft of the servo motor 6 drives the mounting shaft 7 to rotate, the mounting shaft 7 drives the drill pipe 8 to rotate, the drill pipe 8 drives the core bit 9 to rotate, and then controls the lead screw motor 5 to drive the slide plate 4 to move downward, the slide plate 4 drives the core bit 9 to move downward, and the core bit 9 is drilled into the soil. The soil will enter the drill pipe 8 to take a sample of the soil. After the entire drill pipe 8 is inserted into the soil, the servo motor 6 and the lead screw motor 5 are turned off, and then the telescopic rod of the first electric push rod 30 is controlled to shorten, the clamping block 31 is removed from the card slot 28, the drill pipe 8 is released, and then the lead screw motor 5 is controlled to drive the slide plate 4 to move upward, the slide plate 4 drives the mounting shaft 7 to move upward. At the same time, the servo motor 6 is started, and the output shaft of the servo motor 6 drives the mounting shaft 7 to rotate, and the mounting shaft 7 is rotated out of the drill pipe 8. After the mounting shaft 7 moves upward to the initial position, the servo motor 6 and the lead screw motor 5 are turned off, and then the drill pipe 8 is clamped between the two elastic clamping blocks 15. The two elastic clamping blocks 15 clamp the drill pipe 8, and the annular support plate 42 can support the drill pipe 8 to prevent the drill pipe 8 from sliding down. Then, the electric guide rail 17 is controlled to drive the connecting plate 26 and the rack 27 to move forward. During the forward movement of the rack 27, it will engage with the gear 25 and drive the gear 25 to rotate. The gear 25 drives the left front rotating shaft 11 to rotate. The left front rotating shaft 11 drives the connecting block 14 to rotate through the sprocket 12 and the chain 13. The connecting block 14 drives the elastic clamping block 15 to rotate, thereby driving the drill pipe 8 to rotate and rotating the drill pipe 8 to the exact rear of the clamping plate 24. At this time, the telescopic rod of the air cylinder 19 is controlled to shorten, driving the moving block 20 to move forward. The moving block 20 drives the two first sliding shafts 23 to move away from each other through the first inclined opening 21. The first sliding shafts 23 drive the two rotating plates 22 to rotate away from each other to open the clamping plate 24. Then, the electric guide rail 17 is controlled to drive the connecting plate 26 and the rack 27 to move backward. The rack 27 drives the gear 25 to rotate in the reverse direction. Under the action of the one-way clutch, the gear 25 will not drive the left front rotating shaft 11 to rotate. At the same time, the electric guide rail 17 can also drive the moving frame 18 to move backward. The moving frame 18 drives the clamping plate 24 to move backward and moves the clamping plate 24 to the periphery of the drill pipe 8. Then, the telescopic rod of the air cylinder 19 is controlled to extend, driving the moving block 20 to move backward. The moving block 20 drives the two first sliding shafts 23 to move closer to each other through the first inclined opening 21. The first sliding shafts 23 drive the two rotating plates 22 to rotate closer to each other to close the clamping plate 24. The clamping plate 24 can clamp the drill pipe 8. At this time, the electric guide rail 17 is still running, and the clamping plate 24 continues to move backward. The clamping plate 24 will drive the drill pipe 8 to move backward, and the drill pipe 8 moves out of the elastic clamping block 15. When the drill pipe 8 moves to directly below the mounting shaft 7, the electric guide rail 17 is turned off.Then, control the lead screw motor 5 to drive the slide plate 4 to move downward. The slide plate 4 drives the mounting shaft 7 to move downward. At the same time, start the servo motor 6 to drive the mounting shaft 7 to rotate, rotate the mounting shaft 7 into the drill pipe 8, then control the telescopic rod of the first electric push rod 30 to extend, insert the clamping block 31 into the clamping groove 28 to fix the drill pipe 8. At this time, control the telescopic rod of the cylinder 19 to shorten to open the clamping plate 24 and release the drill pipe 8. Then, control the electric guide rail 17 to drive the moving frame 18 to move forward. The moving frame 18 drives the clamping plate 24 to move forward to move the clamping plate 24 away from the periphery of the drill pipe 8. Then, start the lead screw motor 5 and the servo motor 6 simultaneously, so that the drill pipe 8 moves downward while rotating, rotate the drill pipe 8 into the drill pipe 8 in the soil to complete the installation of the drill pipe 8. The lead screw motor 5 and the servo motor 6 continue to operate to drill the newly installed drill pipe 8 into the soil for sampling. Repeat the above operations to continue installing the drill pipe 8. After the soil sampling is completed, control the lead screw motor 5 to drive the slide plate 4 to move upward. The slide plate 4 drives the mounting shaft 7, the drill pipe 8, and the core bit 9 to move upward to pull out the drill pipe 8 from the soil. Then, according to the above operation steps, remove the drill pipe 8 from the mounting shaft 7. The removed drill pipe 8 will be clamped between the two elastic clamping blocks 15 for subsequent taking. In this way, the drill pipe 8 can be automatically installed and disassembled, thereby improving work efficiency.

[0034] As Figure 9 and Figure 10 shown, it further includes a guiding mechanism. The guiding mechanism includes a fixed frame 32 and a guiding ring 33. The middle of the top of the chassis 1 is connected with the fixed frame 32 by bolts. The middle of the fixed frame 32 is connected with the guiding ring 33. The guiding ring 33 can guide the drill pipe 8 to make the movement of the drill pipe 8 more stable.

[0035] As Figures 8 - 10 shown, it further includes a stabilizing mechanism. The stabilizing mechanism includes a second electric push rod 34, a moving plate 35, a plug rod 37, and a second sliding shaft 38. The second electric push rod 34 is installed on the middle of the top of the chassis 1 by bolts. The rear end of the telescopic rod of the second electric push rod 34 is connected with the moving plate 35. Second inclined openings 36 are opened on both the left and right sides of the moving plate 35. Plug rods 37 are slidably connected to both the left and right sides of the fixed frame 32. One end of each of the two plug rods 37 away from each other is connected with a second sliding shaft 38. The two second sliding shafts 38 are respectively located in the two second inclined openings 36. Slots 39 are opened on both the left and right sides of the upper part of the drill pipe 8. The plug rods 37 are located in the slots 39.

[0036] When installing and disassembling the drill pipe 8, the inserting rod 37 will correspond to the inserting slot 39. At this time, the telescopic rod of the second electric push rod 34 is extended to drive the moving plate 35 to move backward. The moving plate 35 drives the two second sliding shafts 38 to move towards each other through the second inclined opening 36, and the second sliding shafts 38 drive the two inserting rods 37 to move towards each other, and insert the inserting rods 37 into the inserting slots 39, so as to fix the drill pipe 8 in the soil and prevent the drill pipe 8 in the soil from sliding down.

[0037] As Figure 11 shown, it further includes a first telescopic pipe 40 and a second telescopic pipe 41. A first telescopic pipe 40 is connected between the bottom of the sliding plate 4 and the top of the chassis 1, and the lead screw of the lead screw motor 5 is located in the first telescopic pipe 40. A second telescopic pipe 41 is connected between the top of the sliding plate 4 and the frame 2, and the lead screw of the lead screw motor 5 is located in the second telescopic pipe 41.

[0038] Initially, the first telescopic pipe 40 is in an extended state, and the second telescopic pipe 41 is in a contracted state; the first telescopic pipe 40 and the second telescopic pipe 41 can block dust and prevent the dust from floating onto the lead screw of the lead screw motor 5. When the sliding plate 4 moves downward, the first telescopic pipe 40 contracts, and the second telescopic pipe 41 extends. When the sliding plate 4 moves upward, the first telescopic pipe 40 extends, and the second telescopic pipe 41 contracts, which will not affect the movement of the sliding plate 4.

[0039] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art of those skilled in the art.

Claims

1. A sampling and testing device for geotechnical engineering exploration, comprising a chassis (1) and a frame (2), the chassis (1) is connected to the frame (2) at the top, and is characterized in that, It further includes a guide rod (3), a sliding plate (4), a lead screw motor (5), a servo motor (6), a mounting shaft (7), a drill pipe (8), a core bit (9), a loading and unloading mechanism, and a fixing mechanism. A guide rod (3) is connected to the top of the chassis (1), the guide rod (3) is connected to the frame (2), a sliding plate (4) is slidably connected to the guide rod (3), a lead screw motor (5) is installed on the top of the frame (2), the lead screw of the lead screw motor (5) is rotatably connected to the top of the chassis (1), the lead screw of the lead screw motor (5) is threadedly connected to the sliding plate (4), a servo motor (6) is installed on the sliding plate (4), an output shaft of the servo motor (6) is connected to a mounting shaft (7), a drill pipe (8) is threadedly connected to the lower end of the mounting shaft (7), a core bit (9) is threadedly connected to the lower end of the drill pipe (8), the loading and unloading mechanism is used for installing and disassembling the drill pipe (8), and the fixing mechanism is used for fixing the drill pipe (8) on the mounting shaft (7); The loading and unloading mechanism includes a mounting frame (10), a rotating shaft (11), a sprocket (12), a chain (13), a connecting block (14), an elastic clamping block (15), an electric guide rail (17), a moving frame (18), a cylinder (19), a moving block (20), a rotating plate (22), a first sliding shaft (23), a clamping plate (24), and a rotating component. A mounting frame (10) is connected to the top of the chassis (1), rotating shafts (11) are symmetrically rotatably connected to the front and rear sides of the left and right sides of the mounting frame (10), sprockets (12) are connected to the upper and lower parts of the rotating shafts (11), chains (13) are wound around the four sprockets (12) above and the four sprockets (12) below, connecting blocks (14) are evenly spaced and connected to the chains (13), and two elastic clamping blocks (15) for clamping the drill pipe (8) are connected to each connecting block (14). An electric guide rail (17) is installed on the mounting frame (10), a moving frame (18) is connected to the top of the slider of the electric guide rail (17), a cylinder (19) is installed on the top of the moving frame (18), a moving block (20) is connected to the telescopic rod of the cylinder (19), first inclined openings (21) are formed on the left and right sides of the moving block (20), rotating plates (22) are hinged to the left and right sides of the moving frame (18), first sliding shafts (23) are connected to the tops of the rotating plates (22), the first sliding shafts (23) are located in the first inclined openings (21), and clamping plates (24) for clamping the drill pipe (8) are connected to the rotating plates (22). The rotating component is used to control the rotation of the elastic clamping blocks (15).

2. The sampling and testing equipment for geotechnical engineering exploration according to claim 1, characterized in that, The rotating component includes a gear (25), a connecting plate (26), and a rack (27). A gear (25) is connected to the left front rotating shaft (11) through a one-way clutch, a connecting plate (26) is connected to the slider of the electric guide rail (17), a rack (27) is connected to the connecting plate (26), the rack (27) will engage with the gear (25) during the forward movement and drive the gear (25) to rotate, the gear (25) drives the left front rotating shaft (11) to rotate, and the left front rotating shaft (11) drives the elastic clamping blocks (15) to rotate.

3. A sampling and testing device for geotechnical engineering exploration according to claim 2, characterized in that, The fixing mechanism includes an annular plate (29), a first electric push rod (30) and a clamping block (31). A clamping groove (28) is formed on the drill pipe (8). The annular plate (29) is connected to the mounting shaft (7). The first electric push rod (30) is connected to the annular plate (29). The telescopic rod of the first electric push rod (30) is connected to the clamping block (31). The clamping block (31) can be inserted into the clamping groove (28) to fix the drill pipe (8) on the mounting shaft (7).

4. A sampling and testing device for geotechnical engineering exploration according to claim 3, characterized in that, It further includes a guiding mechanism. The guiding mechanism includes a fixing frame (32) and a guiding ring (33). The fixing frame (32) is connected to the top of the chassis (1). The guiding ring (33) for guiding the drill pipe (8) is connected to the fixing frame (32).

5. The sampling and testing device for geotechnical engineering exploration according to claim 4, characterized in that, It further includes a stabilizing mechanism. The stabilizing mechanism includes a second electric push rod (34), a moving plate (35), a plug rod (37) and a second sliding shaft (38). The second electric push rod (34) is installed on the top of the chassis (1). The telescopic rod of the second electric push rod (34) is connected to the moving plate (35). A second inclined opening (36) is formed on the moving plate (35). The plug rod (37) is slidably connected to the fixing frame (32). The second sliding shaft (38) is connected to the plug rod (37). The second sliding shaft (38) is located in the second inclined opening (36). A plug slot (39) is formed on the drill pipe (8). The plug rod (37) can be inserted into the plug slot (39) to fix the drill pipe (8).

6. The sampling and testing device for geotechnical engineering exploration according to claim 5, characterized in that, It further includes a first telescopic tube (40) and a second telescopic tube (41). The first telescopic tube (40) for protecting the lead screw of the lead screw motor (5) is connected between the sliding plate (4) and the chassis (1). The lead screw of the lead screw motor (5) is located in the first telescopic tube (40). The second telescopic tube (41) for protecting the lead screw of the lead screw motor (5) is connected between the sliding plate (4) and the frame (2). The lead screw of the lead screw motor (5) is located in the second telescopic tube (41).

7. A sampling and testing device for geotechnical engineering exploration according to claim 6, characterized in that, It further includes an annular support plate (42). The annular support plate (42) for supporting the drill pipe (8) is connected to the mounting frame (10).

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