Soil sampling device and sampling method for construction

Abstract

The present invention relates to the technical field of soil sampling, and in particular to a soil sampling device for construction and a sampling method thereof, comprising an assembly frame, wherein support legs are provided below the assembly frame for support, a soil sampling mechanism is provided on the assembly frame, a power mechanism for removing soil is provided on the assembly frame, a telescopic mechanism for driving the device to move is installed on the support legs, and the soil sampling mechanism comprises a second oil cylinder, and a second curved plate is fixedly installed on the end of the telescopic rod of the second oil cylinder. The present invention achieves soil cutting by manipulating the mutual approach of an elastic belt and an arc-shaped elastic plate, allowing the soil to remain in the first curved plate and the second curved plate, and supports the soil in the first curved plate and the second curved plate from below, thereby ensuring the stability of the soil in the first curved plate and the second curved plate, and facilitating sampling by the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling, and in particular to a soil sampling device for construction and a sampling method thereof. Background Art

[0002] Soil sampling refers to the method of collecting soil samples, including the layout of sampling points and sampling techniques. Cross-section soil sampling is one of these methods. It is carried out after the cross-section observation and recording is completed. Before sampling, the sampling section should be repaired and cleaned, and the top layer of loose soil should be removed. Then, samples are taken from the central typical location layer by layer from top to bottom. Chinese patent publication number CN111579288A discloses a soil sampling device. This invention solves the problems of conventional soil sampling devices by providing a sampling tube and an embedded plate. However, this device has the following problems: it is impossible to collect soil from different layers at once during sampling. During sampling, soil from one layer is easily affected by soil from other layers, resulting in poor sampling results. During sampling, the sampled soil easily falls out of the sampling tube, affecting the sampling effect of the soil. Summary of the Invention

[0003] The invention provides a soil sampling device for construction and a sampling method thereof, which realizes layered sampling of soil and has good sampling effect.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a soil sampling device for construction, comprising an assembly frame, wherein support legs are provided below the assembly frame for support, a soil sampling mechanism is provided on the assembly frame, a power mechanism for removing soil is provided on the assembly frame, and a telescopic mechanism for driving the device to move is installed on the support legs;

[0005] The soil sampling mechanism includes a second oil cylinder, a second arc plate is fixedly installed on the end of the telescopic rod of the second oil cylinder, the first arc plate is movably engaged with the second arc plate, a rectangular insertion groove is provided on the side wall of the second arc plate, a rectangular insertion plate is installed on the side wall of the first arc plate, the rectangular insertion plate is movably engaged in the rectangular insertion groove, a first bolt for fixing is provided on the rectangular insertion plate, a rectangular engaging plate is provided on the side walls of the second arc plate and the first arc plate, a rectangular engaging groove is fixedly installed on the side walls of the first arc plate and the second arc plate, and the second arc plate and the first arc plate are fixed by engaging the rectangular engaging plate and the rectangular engaging groove.

[0006] As a preferred technical solution of the present invention, a cutting head is provided on the lower surface of the first curved plate and the second curved plate, and the cutting head is installed on the first curved plate and the second curved plate by screws. The thickness of the first curved plate and the second curved plate decreases from top to bottom. An arc-shaped elastic plate is provided on the inner side wall of the cutting head, and an elastic belt is fixedly installed on the side wall of the arc-shaped elastic plate. The elastic belt is movably engaged in the cutting head. A round rod is also fixedly installed on the side wall of the arc-shaped elastic plate, and a cutting blade is provided above the round rod. A round telescopic long rod is fixedly installed above the cutting blade, and the round telescopic long rod is movably engaged in the first curved plate and the second curved plate. A third oil cylinder is movably installed outside the circular telescopic long rod, and the third oil cylinder is fixedly installed in the first curved plate and the second curved plate.

[0007] As a preferred technical solution of the present invention, the power mechanism includes a first oil cylinder, which is fixedly mounted on the side wall of the assembly frame, a rectangular fixed side plate is fixedly mounted on the first oil cylinder, and the rectangular fixed side plate is fixedly mounted on the side wall of the assembly frame, a first telescopic adjustment rod is movably mounted in the first oil cylinder, a round rod is fixedly mounted on the side wall of the first telescopic adjustment rod, a circular extrusion disk is movably mounted in the first curved plate and the second curved plate, a screw is fixedly mounted on the side wall of the circular extrusion disk, a rectangular side groove is opened on the side wall of the first curved plate, the screw is movably engaged in the rectangular side groove, and a circular sleeve is provided between the round rod and the screw for connection.

[0008] As a preferred technical solution of the present invention, the telescopic mechanism includes a rectangular receiving plate, the rectangular receiving plate is fixedly mounted on the lower surface of the supporting leg, the rectangular receiving plate is provided with a penetrating rectangular slide groove, the upper surface of the rectangular receiving plate is fixedly mounted with a first U-shaped support frame, a threaded rotating rod is threadedly mounted on the first U-shaped support frame, a turntable is fixedly mounted on the end of the threaded rotating rod, a circular clamping seat is movably mounted outside the threaded rotating rod, and a second rotating wheel is movably mounted inside the second U-shaped support frame, the U-shaped frame is fixedly mounted on the side wall of the assembly frame, the rectangular connecting plate is fixedly mounted on the side wall of the U-shaped frame, the connecting bracket is fixedly mounted on the side wall of the rectangular connecting plate, a rotating shaft is fixedly mounted on the connecting bracket, and a first pulley is movably mounted outside the rotating shaft.

[0009] A method for sampling soil for construction, comprising the following steps:

[0010] The first step is to push the assembly frame and apply a thrust in the corresponding direction to the assembly frame to allow the equipment to slide on the ground. The two rectangular slides and the first pulley form three driving wheels that slide on the ground, allowing the equipment to travel stably on the ground. After traveling to the position where the soil needs to be inspected, the turntable is rotated to drive the threaded rotating rod to rotate on the first U-shaped support frame. The threaded rotation of the threaded rotating rod on the first U-shaped support frame will apply pressure in the corresponding direction to the circular card seat, allowing the second U-shaped support frame to adjust its position up and down in the first U-shaped support frame. After the second U-shaped support frame is adjusted, the second rotating wheel no longer contacts the ground, so that the rectangular receiving plate will contact the ground, allowing the equipment to be stably placed on the ground.

[0011] The second step, after the equipment reaches the sampling position, the second curved plate under the second cylinder is moved downward by starting the second oil cylinder. The downward movement of the second curved plate will drive the first curved plate installed on the second curved plate to move downward. After the second curved plate and the first curved plate touch the ground, the cutting head will first touch the ground. Through the cutting of the ground by the cutting head, the cutting head will drive the first curved plate and the second curved plate into the ground. After the first curved plate and the second curved plate reach the appropriate position, the third oil cylinder is started to drive the circular telescopic long rod to move downward. The downward movement of the circular telescopic long rod will drive the downward movement of the cutting blade, and the downward movement of the cutting blade will cut the circular rod, so that the circular rod no longer fixes the arc-shaped elastic plate. In this way, under the elastic force of the elastic belt, the arc-shaped elastic plate will separate from the side wall of the cutting head. In this way, the two arc-shaped elastic plates approach each other, which will drive the elastic belts approach each other, thereby retaining the soil, so that a large amount of soil can be retained in the first arc plate and the second arc plate. Then, by starting the second oil cylinder again, the first arc plate and the second arc plate are reset to achieve soil sampling;

[0012] The third step is to take out the soil in the first curved plate and the second curved plate through the rectangular side grooves on the side walls of the first telescopic adjusting rod, so that the soil at different depths can be extracted, which is convenient for the equipment to perform layered sampling and the sampling is more convenient. When all the soil in the first curved plate and the second curved plate needs to be taken out, the cutting head can be disassembled by twisting the screw on the cutting head. After that, the ends of the screw and the round rod are aligned, and the circular sleeve can be rotated on the round rod, and the circular sleeve and the screw are threadedly connected. By rotating the circular sleeve, the screw is fixed on the circular sleeve, and then the first oil cylinder is started to move the first telescopic adjusting rod downward, thereby driving the circular extrusion plate to move downward, so that the circular extrusion plate pushes the soil in the first curved plate and the second curved plate, thereby processing the soil in the first curved plate and the second curved plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The device cuts the soil by manipulating the elastic belt and the arc-shaped elastic plate to move closer to each other, allowing the soil to remain in the first arc plate and the second arc plate, and supports the soil in the first arc plate and the second arc plate from below, ensuring the stability of the soil in the first arc plate and the second arc plate, which is convenient for the device to sample; (2) The connection stability of the first arc plate and the second arc plate of the device is strong, and the device is easy to disassemble and assemble, which is convenient for cleaning the inner walls of the first arc plate and the second arc plate; (3) The device controls the position of the second wheel by manipulating the extension and retraction of the second wheel in the first U-shaped support frame, allowing the device to be controlled in various situations and is convenient to use; (4) The rectangular side groove opened on the side wall of the first telescopic adjustment rod can extract soil at different depths, which is convenient for the device to perform layered sampling and is convenient for sampling; (5) The device controls the movement of the circular extrusion plate to process the soil in the first arc plate and the second arc plate, which is convenient for the device to perform layered soil sampling and has a good sampling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the front side of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the U-shaped frame of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the power mechanism of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the telescopic mechanism of the present invention;

[0019] Figure 5 Schematic diagram of the exploded structure of the telescopic mechanism of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the soil collection mechanism of the present invention;

[0021] Figure 7 This is a schematic diagram of the exploded structure of the soil collection mechanism of the present invention;

[0022] Figure 8 Schematic diagram of the structure of the arc-shaped elastic plate of the present invention;

[0023] Figure 9 It is a bottom view structural diagram of the soil collection mechanism of the present invention.

[0024] Wherein: 1. Assembly frame; 2. Support legs; 11. U-shaped frame; 12. Rectangular connecting plate; 13. Connecting bracket; 14. Rotating shaft; 15. First pulley; 21. First oil cylinder; 22. Rectangular fixed side plate; 23. First telescopic adjustment rod; 24. Round rod; 25. Round sleeve; 26. Screw; 27. Round extrusion plate; 31. Second oil cylinder; 32. First curved plate; 33. Second curved plate; 34. Rectangular insert plate; 35. First bolt; 36. Rectangular insert plate shaped side groove; 37, cutting head; 38, rectangular insertion groove; 41, circular telescopic long rod; 42, third oil cylinder; 43, arc-shaped elastic plate; 44, elastic belt; 45, circular rod; 46, cutting blade; 47, rectangular clamping plate; 48, rectangular clamping groove; 51, rectangular receiving plate; 52, first U-shaped support frame; 53, threaded rotating rod; 54, turntable; 55, circular clamping seat; 56, second U-shaped support frame; 57, second rotating wheel; 58, rectangular slide groove. Implementation Method

[0025] The present invention is described in detail below with reference to the accompanying drawings:

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, a soil sampling device for construction and a sampling method thereof include an assembly frame 1, a support leg 2 is provided below the assembly frame 1 for support, a soil sampling mechanism is provided on the assembly frame 1, a power mechanism for removing soil is provided on the assembly frame 1, and a telescopic mechanism for driving the device to move is installed on the support leg 2; the soil sampling mechanism includes a second oil cylinder 31, a second curved plate 33 is fixedly installed on the end of the telescopic rod of the second oil cylinder 31, a first curved plate 32 is movably mounted on the second curved plate 33, and a side wall of the second curved plate 33 is provided with a There is a rectangular insertion groove 38, and a rectangular insertion plate 34 is installed on the side wall of the first curved plate 32. The rectangular insertion plate 34 is movably engaged in the rectangular insertion groove 38. The rectangular insertion plate 34 is provided with a first bolt 35 for fixing. The side walls of the second curved plate 33 and the first curved plate 32 are both provided with a rectangular engaging plate 47. The side walls of the first curved plate 32 and the second curved plate 33 are both fixedly installed with a rectangular engaging groove 48. The second curved plate 33 and the first curved plate 32 are fixed by the engagement of the rectangular engaging plate 47 and the rectangular engaging groove 48.

[0027] The lower surfaces of the first curved plate 32 and the second curved plate 33 are both provided with a cutting head 37, which is mounted on the first curved plate 32 and the second curved plate 33 by screws. The thickness of the first curved plate 32 and the second curved plate 33 decreases from top to bottom. An arc-shaped elastic plate 43 is provided on the inner side wall of the cutting head 37, and an elastic belt 44 is fixedly mounted on the side wall of the arc-shaped elastic plate 43. The elastic belt 44 is movably engaged in the cutting head 37, and a circular rod 45 is also fixedly mounted on the side wall of the arc-shaped elastic plate 43. A cutting blade 46 is provided above the circular rod 45, and a circular telescopic long rod 41 is fixedly mounted on the cutting blade 46. The circular telescopic long rod 41 is movably engaged in the first curved plate 32 and the second curved plate 33. A third oil cylinder 42 is movably mounted outside the circular telescopic long rod 41, and the third oil cylinder 42 is fixedly mounted in the first curved plate 32 and the second curved plate 33.

[0028] After the equipment reaches the sampling position, the second oil cylinder 31 is started to allow the second curved plate 33 under the second oil cylinder 31 to move downward, and the downward movement of the second curved plate 33 will drive the first curved plate 32 installed on the second curved plate 33 to move downward. After the second curved plate 33 and the first curved plate 32 contact the ground, the cutting head 37 will first contact the ground, and the cutting head 37 will drive the first curved plate 32 and the second curved plate 33 to enter the ground through the cutting head 37. After the first curved plate 32 and the second curved plate 33 reach the appropriate position, the third oil cylinder 42 is started to allow the third oil cylinder 42 to drive the circular telescopic rod 41 to move downward, and the downward movement of the circular telescopic rod 41 will drive the cutting blade 46 to move downward, and the downward movement of the cutting blade 46 will cut the circular rod 45, so that the circular rod 45 is no longer in contact with the ground. The arc-shaped elastic plate 43 is fixed, so that under the elastic force of the elastic belt 44, the arc-shaped elastic plate 43 will detach from the side wall of the cutting head 37. In this way, the two arc-shaped elastic plates 43 approach each other, which will drive the elastic belt 44 to approach each other, thereby retaining the soil, allowing a large amount of soil to remain in the first arc plate 32 and the second arc plate 33. Then, by starting the second oil cylinder 31 again, the first arc plate 32 and the first arc plate 32 are reset to achieve soil sampling. This device achieves soil cutting by manipulating the elastic belt 44 and the arc-shaped elastic plate 43 to approach each other, allowing the soil to remain in the first arc plate 32 and the second arc plate 33, and supporting the soil in the first arc plate 32 and the second arc plate 33 from below to ensure the stability of the soil in the first arc plate 32 and the second arc plate 33, which is convenient for the equipment to sample.

[0029] The second curved plate 33 and the first curved plate 32 are connected to each other by the mutual engagement of the rectangular engaging plate 47 and the rectangular slot 48. Then, a screw is provided on the cutting head 37, which is threadedly installed in the first curved plate 32 and the second curved plate 33 from the bottom through the screw on the cutting head 37, and the end of the screw is threadedly installed in the rectangular slot 48, so that the two can be connected and fixed from the bottom, and the rectangular insertion plate 34 on the first curved plate 32 can be engaged in the rectangular insertion groove 38, and the rectangular insertion plate 34 and the rectangular side groove 36 are threadedly fixed by the first bolt 35, so that the connection between the two can be fixed from the top. This can greatly improve the connection stability of the first curved plate 32 and the second curved plate 33. At the same time, the equipment is more convenient to disassemble and assemble, and it is convenient to clean the inner walls of the first curved plate 32 and the second curved plate 33.

[0030] The power mechanism includes a first oil cylinder 21, which is fixedly mounted on the side wall of the assembly frame 1. A rectangular fixed side plate 22 is fixedly mounted on the first oil cylinder 21, and the rectangular fixed side plate 22 is fixedly mounted on the side wall of the assembly frame 1. A first telescopic adjustment rod 23 is movably mounted in the first oil cylinder 21, and a round rod 24 is fixedly mounted on the side wall of the first telescopic adjustment rod 23. A circular extrusion disk 27 is movably mounted in the first curved plate 32 and the second curved plate 33, and a screw 26 is fixedly mounted on the side wall of the circular extrusion disk 27. A rectangular side groove 36 is opened on the side wall of the first curved plate 32, and the screw 26 is movably engaged in the rectangular side groove 36. A circular sleeve 25 is provided between the round rod 24 and the screw 26 for connection.

[0031] By pushing the assembly frame 1, a thrust in the corresponding direction is applied to the assembly frame 1, allowing the equipment to slide on the ground. The two rectangular slide grooves 58 and the first pulley 15 form three driving wheels that slide on the ground, allowing the equipment to travel stably on the ground. After traveling to the position where the soil needs to be inspected, the turntable 54 is rotated to drive the threaded rotating rod 53 to rotate on the first U-shaped support frame 52. The threaded rotation of the threaded rotating rod 53 on the first U-shaped support frame 52 will apply pressure in the corresponding direction to the circular clamping seat 55, allowing the second U-shaped support frame 56 to adjust the up and down position in the first U-shaped support frame 52. After the second U-shaped support frame 56 is adjusted, the second rotating wheel 57 no longer contacts the ground, so that the rectangular receiving plate 51 contacts the ground, allowing the equipment to be stably placed on the ground. This device controls the position of the second rotating wheel 57 by controlling the extension and retraction of the second rotating wheel 57 in the first U-shaped support frame 52, allowing the equipment to be controlled in various situations and is more convenient to use.

[0032] The telescopic mechanism includes a rectangular receiving plate 51, which is fixedly mounted on the lower surface of the supporting leg 2. A rectangular sliding groove 58 is provided on the rectangular receiving plate 51. A first U-shaped supporting frame 52 is fixedly mounted on the upper surface of the rectangular receiving plate 51. A threaded rotating rod 53 is threadedly mounted on the first U-shaped supporting frame 52. A turntable 54 is fixedly mounted on the end of the threaded rotating rod 53. A circular clamping seat 55 is movably mounted on the outside of the threaded rotating rod 53. A second U-shaped supporting frame 56 is fixedly mounted on the lower surface of the circular clamping seat 55. A second rotating wheel 57 is movably mounted in the second U-shaped supporting frame 56. A U-shaped frame 11 is fixedly mounted on the side wall of the assembly frame 1. A rectangular connecting plate 12 is fixedly mounted on the side wall of the U-shaped frame 11. A connecting bracket 13 is fixedly mounted on the side wall of the rectangular connecting plate 12. A rotating shaft 14 is fixedly mounted on the connecting bracket 13. A first pulley 15 is movably mounted on the outside of the rotating shaft 14.

[0033] When it is necessary to take out the soil in the first curved plate 32 and the second curved plate 33, the rectangular side groove 36 opened on the side wall of the first telescopic adjustment rod 23 can be used to extract soil of different depths, which is convenient for the equipment to perform layered sampling. The sampling is more convenient. When it is necessary to take out all the soil in the first curved plate 32 and the second curved plate 33, the cutting head 37 is disassembled by twisting the screw on the cutting head 37. After that, the ends of the screw 26 and the round rod 24 are aligned, and the circular sleeve 25 can be rotated on the round rod 24, and there is a thread between the circular sleeve 25 and the screw 26. The circular sleeve 25 is rotated to fix the screw 26 on the circular sleeve 25, and then the first oil cylinder 21 is started to move the first telescopic adjustment rod 23 downward, thereby driving the circular extrusion plate 27 to move downward, so that the circular extrusion plate 27 pushes the soil in the first curved plate 32 and the second curved plate 33 to achieve the treatment of the soil in the first curved plate 32 and the second curved plate 33. This device processes the soil in the first curved plate 32 and the second curved plate 33 by controlling the movement of the circular extrusion plate 27, which facilitates the equipment to perform soil stratification sampling and has a good sampling effect.

[0034] A method for sampling soil for construction, comprising the following steps:

[0035] The first step is to push the assembly frame 1 and apply a thrust in the corresponding direction to the assembly frame 1 to make the equipment slide on the ground. The two rectangular slide grooves 58 and the first pulley 15 form three driving wheels that slide on the ground, so that the equipment can travel stably on the ground. After traveling to the position where the soil needs to be inspected, the turntable 54 is rotated to allow the turntable 54 to drive the threaded rotating rod 53 to rotate on the first U-shaped support frame 52. The threaded rotation of the threaded rotating rod 53 on the first U-shaped support frame 52 will apply pressure in the corresponding direction to the circular clamping seat 55, so that the second U-shaped support frame 56 can adjust its upper and lower position in the first U-shaped support frame 52. After the second U-shaped support frame 56 is adjusted, the second rotating wheel 57 no longer contacts the ground, so that the rectangular receiving plate 51 will contact the ground, allowing the equipment to be stably placed on the ground.

[0036] In the second step, after the equipment reaches the sampling position, the second curved plate 33 below the second curved plate 31 is moved downward by starting the second oil cylinder 31. The downward movement of the second curved plate 33 drives the first curved plate 32 mounted on the second curved plate 33 to move downward. After the second curved plate 33 and the first curved plate 32 touch the ground, the cutting head 37 contacts the ground first. Through the cutting of the ground by the cutting head 37, the cutting head 37 drives the first curved plate 32 and the second curved plate 33 into the ground. After the first curved plate 32 and the second curved plate 33 reach the appropriate position, the third oil cylinder 42 is started to drive the circular telescopic long rod 41 to move downward. The circular telescopic rod 41 moves downward, and the downward movement of the cutting blade 46 drives the downward movement of the cutting blade 46, which cuts the circular rod 45, so that the circular rod 45 no longer fixes the arc-shaped elastic plate 43. In this way, under the elastic force of the elastic band 44, the arc-shaped elastic plate 43 will be separated from the side wall of the cutting head 37. The two arc-shaped elastic plates 43 approach each other, which drives the elastic bands 44 to approach each other, thereby retaining the soil, so that a large amount of soil can be retained in the first arc plate 32 and the second arc plate 33. Then, by starting the second oil cylinder 31 again, the first arc plate 32 and the second arc plate 33 are reset to achieve soil sampling.

[0037] The third step is that when it is necessary to remove the soil in the first curved plate 32 and the second curved plate 33, the rectangular side groove 36 opened on the side wall of the first telescopic adjustment rod 23 can be used to extract soil at different depths, which is convenient for the equipment to perform stratified sampling and the sampling is more convenient. When it is necessary to remove all the soil in the first curved plate 32 and the second curved plate 33, the cutting head 37 is disassembled by twisting the screw on the cutting head 37. Then, the ends of the screw 26 and the round rod 24 are aligned, and the circular sleeve 25 can rotate on the round rod 24. The circular sleeve 25 and the screw 26 are threadedly connected. By rotating the circular sleeve 25, the screw 26 is fixed on the circular sleeve 25. Then, the first oil cylinder 21 is started to move the first telescopic adjustment rod 23 downward, thereby driving the circular extrusion plate 27 to move downward, so that the circular extrusion plate 27 pushes the soil in the first curved plate 32 and the second curved plate 33, thereby processing the soil in the first curved plate 32 and the second curved plate 33.

Claims

1. A soil sampling device for construction, comprising an assembly frame (1), wherein support legs (2) are provided below the assembly frame (1) for support, and characterized in that: The assembly frame (1) is provided with a soil sampling mechanism, i.e., a power mechanism for taking out soil, and the support leg (2) is provided with a telescopic mechanism for driving the device to move; the soil sampling mechanism comprises a second oil cylinder (31), a second arc plate (33) is fixedly installed on the end of the telescopic rod of the second oil cylinder (31), a first arc plate (32) is movably mounted on the second arc plate (33), a rectangular insertion groove (38) is provided on the side wall of the second arc plate (33), a rectangular insertion plate (34) is installed on the side wall of the first arc plate (32), the rectangular insertion plate (34) is movably engaged in the rectangular insertion groove (38), and a fixing mechanism is provided on the rectangular insertion plate (34). A first bolt (35), a rectangular snap-fit ​​plate (47) is provided on the side walls of the second arc plate (33) and the first arc plate (32), a rectangular slot (48) is fixedly installed on the side walls of the first arc plate (32) and the second arc plate (33), and the second arc plate (33) and the first arc plate (32) are fixed by the engagement of the rectangular snap-fit ​​plate (47) and the rectangular slot (48); a cutting head (37) is provided on the lower surface of the first arc plate (32) and the second arc plate (33), and the cutting head (37) is installed on the first arc plate (32) and the second arc plate (33) by screws, and the thickness of the first arc plate (32) and the second arc plate (33) is The cutting head (37) is provided with an arc-shaped elastic plate (43) on the inner side wall, and an elastic belt (44) is fixedly installed on the side wall of the arc-shaped elastic plate (43), and the elastic belt (44) is movably engaged in the cutting head (37); a round rod (45) is also fixedly installed on the side wall of the arc-shaped elastic plate (43), and a cutting blade (46) is provided above the round rod (45), and a round telescopic long rod (41) is fixedly installed above the cutting blade (46), and the round telescopic long rod (41) is movably engaged in the first arc plate (32) and the second arc plate (33), and a third oil cylinder (42) is movably installed outside the circular telescopic long rod (41), and the third oil cylinder (42) is movably engaged in the first arc plate (32) and the second arc plate (33). The oil cylinder (42) is fixedly installed in the first curved plate (32) and the second curved plate (33); a circular extrusion plate (27) is movably installed in the first curved plate (32) and the second curved plate (33); a screw (26) is fixedly installed on the side wall of the circular extrusion plate (27); a rectangular side groove (36) is opened on the side wall of the first curved plate (32); the screw (26) is movably engaged in the rectangular side groove (36); a first telescopic adjustment rod (23) is movably installed in the first oil cylinder (21); a round rod (24) is fixedly installed on the side wall of the first telescopic adjustment rod (23); a round sleeve (25) is provided between the round rod (24) and the screw (26) for connection.

2. A soil sampling device for construction according to claim 1, characterized in that: The telescopic mechanism comprises a rectangular receiving plate (51), the rectangular receiving plate (51) being fixedly mounted on the lower surface of the supporting leg (2), a rectangular sliding groove (58) penetrating the rectangular receiving plate (51), a first U-shaped support frame (52) being fixedly mounted on the upper surface of the rectangular receiving plate (51), a threaded rotating rod (53) being threadedly mounted on the first U-shaped support frame (52), and a rotating disk (54) being fixedly mounted on the end of the threaded rotating rod (53).

3. A soil sampling device for construction according to claim 2, characterized in that: The power mechanism comprises a first oil cylinder (21), the first oil cylinder (21) is fixedly mounted on the side wall of the assembly frame (1), a rectangular fixed side plate (22) is fixedly mounted on the first oil cylinder (21), and the rectangular fixed side plate (22) is fixedly mounted on the side wall of the assembly frame (1).

4. A soil sampling device for construction according to claim 3, characterized in that: A circular clamping seat (55) is movably mounted on the outside of the threaded rotating rod (53), a second U-shaped support frame (56) is fixedly mounted on the lower surface of the circular clamping seat (55), and a second rotating wheel (57) is movably mounted inside the second U-shaped support frame (56).

5. A soil sampling device for construction according to claim 4, characterized in that: A U-shaped frame (11) is fixedly mounted on the side wall of the assembly frame (1), a rectangular connecting plate (12) is fixedly mounted on the side wall of the U-shaped frame (11), a connecting bracket (13) is fixedly mounted on the side wall of the rectangular connecting plate (12), a rotating shaft (14) is fixedly mounted on the connecting bracket (13), and a first pulley (15) is movably mounted outside the rotating shaft (14).

6. The sampling method of a soil sampling device for construction as claimed in claim 5, characterized in that: The following steps are involved: The first step is to push the assembly frame (1) and apply a thrust in a corresponding direction to the assembly frame (1) so that the device slides on the ground. The two rectangular slide grooves (58) and the first pulley (15) form three driving wheels that slide on the ground, so that the device can travel stably on the ground. After traveling to the position where the soil needs to be inspected, the turntable (54) is rotated to drive the threaded rotating rod (53) to rotate on the first U-shaped support frame (52). The threaded rotation of the threaded rotating rod (53) on the first U-shaped support frame (52) will apply pressure in a corresponding direction to the circular clamping seat (55), so that the second U-shaped support frame (56) can adjust its upper and lower positions in the first U-shaped support frame (52). After the second U-shaped support frame (56) is adjusted in position, the second rotating wheel (57) no longer contacts the ground, so that the rectangular receiving plate (51) can contact the ground, so that the device can be stably placed on the ground. Step 2: After the equipment reaches the sampling position, the second curved plate (33) below the second curved plate (31) is moved downward by starting the second oil cylinder (31). The downward movement of the second curved plate (33) drives the first curved plate (32) mounted on the second curved plate (33) to move downward. After the second curved plate (33) and the first curved plate (32) touch the ground, the cutting head (37) first contacts the ground. The cutting head (37) drives the first curved plate (32) and the second curved plate (33) into the ground through cutting the ground. After the first curved plate (32) and the second curved plate (33) reach the appropriate position, the third oil cylinder (42) is started to drive the circular telescopic long rod (41) ) moves downward, the downward movement of the circular telescopic long rod (41) will drive the downward movement of the cutting blade (46), and the downward movement of the cutting blade (46) will cut the circular rod (45), so that the circular rod (45) is no longer fixed to the arc-shaped elastic plate (43), so that under the elastic force of the elastic band (44), the arc-shaped elastic plate (43) will be separated from the side wall of the cutting head (37), so that the two arc-shaped elastic plates (43) are close to each other, which will drive the elastic bands (44) to be close to each other, so as to achieve the retention of soil, so that a large amount of soil can be retained in the first arc plate (32) and the second arc plate (33), and then by starting the second oil cylinder (31) again, the first arc plate (32) and the first arc plate (32) are reset to achieve the sampling of soil; The third step is to extract the soil from the first curved plate (32) and the second curved plate (33) by means of the rectangular side groove (36) provided on the side wall of the first telescopic adjustment rod (23). The soil of different depths can be extracted, and the equipment can be conveniently sampled in layers. The sampling is relatively convenient. When all the soil from the first curved plate (32) and the second curved plate (33) needs to be removed, the cutting head (37) is disassembled by twisting the screw on the cutting head (37). After that, the ends of the screw rod (26) and the round rod (24) are aligned, and the circular sleeve (26) is inserted into the cutting head (37). 5) It can rotate on the round rod (24), and the circular sleeve (25) and the screw rod (26) are threadedly connected. By rotating the circular sleeve (25), the screw rod (26) is fixedly installed on the circular sleeve (25), and then the first oil cylinder (21) is started to move the first telescopic adjustment rod (23) downward, thereby driving the circular extrusion plate (27) to move downward, so that the circular extrusion plate (27) pushes the soil in the first curved plate (32) and the second curved plate (33), thereby achieving the treatment of the soil in the first curved plate (32) and the second curved plate (33).

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