A soil taking device for geotechnical compaction detection

Abstract

The invention discloses a soil taking device for geotechnical compaction detection, which relates to the technical field of construction engineering equipment. The invention comprises an impact head, on which a plurality of shock-absorbing handles are fixedly mounted, and the impact head is equipped with a sampling outer tube through a connecting mechanism, and a sampling gear cylinder is threadedly mounted on the sampling outer tube, and two spur gears and two reverse gear rings are mounted in the sampling outer tube through a rotating mechanism. The advantages are: by cutting the sampled soil multiple times, the soil can be quickly layered, and the soil is quickly packaged with a plastic film after layering, thereby ensuring the integrity of the data after soil sampling, and finally the layered sampled soil is quickly taken out through a splicing installation method, thereby ensuring the integrity of the internal sampled soil and improving the accuracy of the geotechnical compaction test data.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering equipment, and in particular to a soil taking device for geotechnical compaction detection. Background Art

[0002] One of the purposes of geotechnical compaction testing is to evaluate the density and mechanical properties of the stratum. In order to ensure the accuracy and reliability of the test results, the soil samples obtained must be representative and able to represent the overall properties of the stratum. The use of soil sampling devices can ensure that the most authentic and complete samples are obtained from the stratum.

[0003] The integrity of soil samples is very important for compaction testing. If the soil samples are broken or mixed with other impurities during the collection process, it may affect the subsequent test results. At the same time, the sampling process may be disturbed by the external environment. When the sampled soil is taken out, its surface moisture changes under the action of wind, making it difficult to ensure the accuracy of the test results. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a soil sampling device for geotechnical compaction detection, which solves the problem of soil characteristics changing during sampling raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A soil sampling device for geotechnical compaction detection comprises an impact head, a plurality of shock-absorbing handles are fixedly mounted on the impact head, a sampling outer tube is mounted on the impact head through a connecting mechanism, a sampling gear cylinder is threadedly mounted on the sampling outer tube, two spur gears and two reverse gear rings are mounted in the sampling outer tube through a rotating mechanism, a limiting ring is clamped and mounted in the sampling outer tube, a sampling inner tube is fixedly sleeved in the limiting ring, and the sampling outer tube, the limiting ring and the sampling inner tube are all installed in a spliced ​​manner;

[0007] A plurality of splicing shafts are installed on the sampling inner tube through a driving mechanism, and the plurality of splicing shafts are rotatably installed in the sampling outer tube, the upper ends of the plurality of splicing shafts are provided with sliding grooves, the lower ends of the plurality of splicing shafts are fixedly installed with wedges engaged in the corresponding sliding grooves, a storage box is fixedly installed in the sampling inner tube, an electric telescopic sleeve is fixedly installed in the storage box, the outer side of the storage box and the inner tube opening at the lower end of the sampling inner tube are both set to be made of silicone material, and a plastic film is adsorbed on the silicone setting of the outer side of the storage box and the inner tube opening at the lower end of the sampling inner tube;

[0008] Two layered plates are installed on each of the splicing shafts through a reversing mechanism, and each layered plate is slidably installed in the sampling outer tube. An elastic rubber band is installed between each two layered plates through a tightening mechanism, and a circular cutting blade is installed in each layered plate through a secondary cutting mechanism.

[0009] Furthermore, the connecting mechanism includes a socket opened on the impact head, the socket is installed with a connecting rod through an R-type pin, the lower end of the connecting rod is threadedly installed with an extension rod, the lower end of the extension rod is threadedly installed with a fixed joint, and the sampling outer tube is threadedly installed at the lower port of the fixed joint.

[0010] Furthermore, the rotating mechanism includes a rotating chamber and a plurality of rotating grooves opened in the sampling outer tube, and the plurality of rotating grooves are all connected to the rotating chamber, and two reversing gear rings are respectively rotatably installed in the corresponding rotating grooves, a motor 2 is fixedly installed in the rotating chamber, a driving end of the motor 2 is fixedly installed with a rotating shaft rotating in the rotating chamber, two transfer gears are fixedly installed on the rotating shaft, and two spur gears 1 are fixedly installed on the rotating shaft, the two spur gears 1 and the two transfer gears are staggered, and the two spur gears 1 and the two transfer gears all rotate in the corresponding rotating grooves.

[0011] Furthermore, vertical rods are rotatably installed in the two rotating grooves, transmission gears are rotatably installed on the two vertical rods, and the two transmission gears are respectively meshed with corresponding transfer gears and corresponding reversing gear rings.

[0012] Furthermore, the driving mechanism includes a slide rail fixedly installed outside the sampling inner tube, a slider is slidably installed on the slide rail, a motor 1 is fixedly installed on the slider, a spur gear 3 is fixedly installed on the driving end of the motor 1, and a spur gear 2 meshing with the spur gear 3 is fixedly installed on the upper end of the top splicing shaft.

[0013] Furthermore, the reversing mechanism includes a pinion fixedly mounted on the splicing shaft, a gear rod meshing with the pinion fixedly mounted on each of the two layered plates, a receiving groove is provided on one side of the two layered plates close to each other, and the corresponding gear rod slides in the receiving groove, and an arc-shaped gear ring meshing with the corresponding spur gear or reversing gear ring is fixedly mounted on the splicing shaft.

[0014] Furthermore, the clamping mechanism includes a clamping groove and an installation groove opened on the layered plate, rebound springs are fixedly installed in the two installation grooves, and the trigger block is fixedly installed on the corresponding rebound springs, and an extrusion plate used in conjunction with the installation groove is fixedly installed on the two trigger blocks, and elastic rubber bands are sleeved on the two trigger blocks on the same horizontal plane.

[0015] Furthermore, the rebound spring and the extrusion plate installed on each of the trigger blocks are arranged alternately.

[0016] Furthermore, the secondary cutting mechanism includes a square groove opened on the layered plate, an electric push rod is fixedly installed in the square groove, a circular cutting blade is fixedly installed on the driving end of the electric push rod, and the circular cutting blade is rotatably installed in the square groove, a protective groove plate is fixedly installed in the square groove, and the circular cutting blade slides in the protective groove plate.

[0017] Furthermore, a plurality of cutting holes are provided on the sampling inner tube, and the two corresponding layered plates are located at the corresponding cutting holes for coordinated use.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1: This soil sampling device has the advantage of ensuring the internal characteristics of the sampled soil when sampling soil. Through the setting of the plastic film, the humidity inside the sampled soil can be guaranteed when the soil sampling is completed. At the same time, the electric telescopic sleeve telescopic setting can prevent the gravel in the soil from damaging the plastic film, ensuring the integrity of the plastic film, thereby improving the accuracy of the geotechnical compaction test data.

[0020] 2: This soil sampling device has the advantage of layered cutting when sampling soil. Through the setting of multiple splicing axes, while applying opposite cutting forces to the sampled soil, the elastic rubber band is sleeved on the sampled soil using the clamping force generated during cutting. The sampled soil and the plastic film are separated by a changing slicer, so that soils of different depths can be quickly and accurately detected.

[0021] 3: This soil sampling device has the advantage of ensuring the integrity of the sampled soil when sampling soil. By installing the sampling outer tube, the limiting ring and the sampling inner tube in a spliced ​​form, the internal sampled soil can be quickly taken out, and the soil sampling device can be quickly installed at the same time, ensuring the efficiency of soil sampling required for geotechnical compaction experiments.

[0022] In summary, the present invention cuts the sampled soil multiple times so that the soil can be quickly layered, and uses plastic film to quickly package the soil after layering, thereby ensuring the integrity of the data after soil sampling. Finally, the layered sampled soil is quickly taken out through a splicing installation method to ensure the integrity of the internal sampled soil and improve the accuracy of the geotechnical compaction test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic structural diagram of a soil sampling device for geotechnical compaction detection.

[0024] Figure 2 It is a schematic diagram of the structure of the R-type latch and the shock-absorbing handle.

[0025] Figure 3 Schematic diagram of the connecting rod structure.

[0026] Figure 4 A top view of the outer sampling tube.

[0027] Figure 5 for Figure 4 Structural cross-section view along the AA direction.

[0028] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure.

[0029] Figure 7 Schematic diagram of the internal structure of the sampling outer tube.

[0030] Figure 8 It is a schematic diagram of the structure of the slide rail and plastic film.

[0031] Fig. 9 This is a schematic diagram of the structure inside the sampling inner tube.

[0032] Fig.10 This is a schematic diagram of the structure of spur gear two and spur gear three.

[0033] Fig.11 It is a schematic diagram of the structure of the pinion and gear rod.

[0034] Fig.12 for Fig.11 Schematic diagram of the structure of the medium circular cutting blade.

[0035] In the figure: 1. extension rod; 2. connecting rod; 3. R-type latch; 4. impact head; 5. shock-absorbing handle; 6. sampling outer tube; 7. fixed joint; 8. sampling gear cylinder; 9. storage box; 10. sampling inner tube; 11. cushion block; 12. splicing shaft; 13. wedge block; 14. slide rail; 15. motor one; 16. motor two; 17. limit ring; 18. layering plate; 19. rotating shaft; 20. spur gear one; 21. plastic film; 22. electric telescopic sleeve; 23. spur gear two; 24. reverse gear ring; 25. slider; 26. arc gear ring; 27. spur gear three; 28. receiving groove; 29. ​​gear rod; 30. pinion; 31. circular cutting blade; 32. electric push rod; 33. protective slot plate; 34. extrusion plate; 35. trigger block; 36. rebound spring; 37. transmission gear; 38. transmission gear. DETAILED DESCRIPTION

[0036] Reference Figure 1-Figure 3A soil sampling device for geotechnical compaction detection includes an impact head 4, which provides impact force for soil sampling. The impact head 4 can obtain samples from the soil in a rotating or pushing manner. Multiple shock-absorbing handles 5 are fixedly installed on both sides of the impact head 4. The upper and lower ends of the multiple shock-absorbing handles 5 are fixedly connected to dampers using springs to increase the shock-absorbing effect. The damper stops the vibration of the spring by consuming energy, thereby gradually weakening the vibration, which can reduce the vibration sensation generated by people when using it.

[0037] The impact head 4 and the shock-absorbing handle 5 are prior art and are briefly described again. A socket is provided at the lower part of the impact head 4, in which a connecting rod 2 is installed via an R-shaped pin 3. A socket is also provided on the connecting rod 2, and an R-shaped pin 3 is inserted into the socket on the connecting rod 2 and the socket on the impact head 4. The connecting rod 2 and the impact head 4 are fixed via the R-shaped pin 3, and the disassembly and installation of the connecting rod 2 and the impact head 4 can be facilitated.

[0038] A threaded groove is provided at the lower end of the connecting rod 2, and an extension rod 1 is installed with threads in the threaded groove. The extension rod 1 can be prefabricated in different lengths according to the required sampling depth, which is convenient for replacing and assembling the extension rod 1. A threaded groove is provided at the lower end of the extension rod 1, and a fixed splicing joint 7 is installed with threads in the threaded groove on the extension rod 1. The setting of the fixed splicing joint 7 can prevent it from being damaged and reduce the cost of its replacement; threads are provided inside the fixed splicing joint 7, and a sampling outer tube 6 is threadedly installed on the fixed splicing joint 7. A sampling tooth cylinder 8 is threadedly installed at the lower tube mouth of the sampling outer tube 6. The sampling outer tube 6 is in the form of two semicircular arcs spliced ​​together, and the sampling tooth cylinder 8 and the fixed splicing joint 7 are required to fix it to prevent it from falling off. At the same time, the splicing setting can facilitate the removal of the internal sampled soil.

[0039] Reference Figure 4-Figure 10 A plurality of rotating grooves and rotating cavities are provided in the sampling outer tube 6, and the plurality of rotating grooves are connected with the rotating cavity, a cushion block 11 is fixedly installed in the rotating cavity, a motor 2 16 is fixedly installed on the cushion block 11, a rotating shaft 19 rotating in the rotating cavity is fixedly installed on the driving end of the motor 2 16, two spur gears 20 and two transfer gears 37 are fixedly installed on the rotating shaft 19, and the two spur gears 20 and the two transfer gears 37 are staggered, the two spur gears 20 and the two transfer gears 37 are rotated in the corresponding rotating grooves, wherein vertical rods are rotatably installed in the two rotating grooves, transmission gears 38 are rotatably installed on the two vertical rods, and the two transmission gears 38 are respectively meshed with the corresponding transfer gears 37, and reversing gear rings 24 are rotatably installed in the two rotating grooves, and the inside of the reversing gear rings 24 is provided with teeth, and the two transmission gears 38 are meshed with the inside of the corresponding reversing gear rings 24.

[0040] By turning on the motor 2 16, the rotating shaft 19 can be driven to rotate, and one end of the rotating shaft 19 is rotated and set in the rotating chamber. The rotation of the rotating shaft 19 drives the two spur gears 20 and the two transfer gears 37 to rotate simultaneously. The rotation of the two transfer gears 37 drives the two transmission gears 38 to rotate in the opposite direction. The rotation of the two transmission gears 38 drives the two reversing gear rings 24 to rotate in the opposite direction, so that the rotation direction of the two reversing gear rings 24 is opposite to that of the two spur gears 20, and the number of teeth and diameter of the two reversing gear rings 24 are set to be the same as the diameter and number of teeth of the spur gear 20.

[0041] A plurality of splicing shafts 12 are rotatably installed in the sampling outer tube 6, and the plurality of splicing shafts 12 are slidably engaged. A wedge 13 is fixedly installed at one end of each splicing shaft 12, and the other end of each splicing shaft 12 is set as a sliding groove. The corresponding wedge 13 is slidably engaged in the sliding groove on the adjacent splicing shaft 12. An arc gear ring 26 is rotatably installed on each splicing shaft 12, and each arc gear ring 26 is meshed with the corresponding reverse gear ring 24 and the corresponding spur gear 20, so that the two reverse gear rings 24 and the two spur gears 20 drive the two adjacent arc gear rings 26 to rotate in opposite directions. When the rotation directions of the adjacent arc gear rings 26 are opposite, the separation between each two splicing shafts 12 is achieved under the cooperation of the wedge 13 and the sliding groove to prevent the splicing shaft 12 from breaking.

[0042] A spur gear 23 is fixedly installed on the top splicing shaft 12, a rotating ring groove is provided in the sampling outer tube 6, and bumps are provided on both sides of the limit ring 17. The limit ring 17 is clamped and installed in the rotating ring groove, and the limit ring 17 is also spliced ​​with two half rings. The sampling inner tube 10 is fixedly installed in the limit ring 17, and the sampling inner tube 10 is also spliced ​​in two parts and fixedly connected with the corresponding half ring of the limit ring 17. A storage box 9 is fixedly installed in the upper port of the sampling inner tube 10, and the lower part of the storage box 9 is opened. An electric telescopic sleeve 22 is fixedly installed in the storage box 9, and the electric telescopic sleeve 22 is fixedly installed in the storage box 9. When the shrink sleeve 22 is fully retracted, it can be located inside the storage box 9 to prevent the division of the internal sampling soil from being affected. A plastic film 21 is adsorbed on the outer side of the storage box 9. The outer side of the storage box 9 can be made of silicone material. At the same time, the lower tube mouth of the sampling inner tube 10 is set to silicone material, which can fix the upper and lower sides of the plastic film 21. Silica gel is an inorganic material with good adsorption properties. It can form a strong adsorption effect with the surface of the plastic film 21. Especially in some industrial applications, silicone is widely used as a sealing material or auxiliary material for the plastic film 21.

[0043] A slide rail 14 is fixedly installed on the outer side of the sampling inner tube 10, a slider 25 is slidably installed on the slide rail 14, a motor 15 is fixedly installed on the slider 25, a spur gear 3 27 meshing with the spur gear 2 23 is fixedly installed on the driving end of the motor 15, and the sliding setting of the motor 15 can prevent the spur gear 3 27 from rotating with the centrifugal force generated during the rotation when sampling the soil, causing hard damage to the spur gear 3 27, each splicing shaft 12 is fixedly installed with a small gear 30, the lower surface of each arc-shaped gear ring 26 is provided with a strip groove, two connecting blocks are slidably installed in each strip groove, and a layered plate 18 is fixedly installed on each connecting block, and a sampling outer tube 6 is provided with a There are multiple support grooves, and multiple layered plates 18 are fixedly installed with sliding columns, and the multiple sliding columns slide in the corresponding support grooves respectively. The two layered plates 18 located on the same horizontal plane are located on both sides of the sampling inner tube 10. The sampling inner tube 10 is provided with multiple cutting holes, and the corresponding two layered plates 18 are located at the corresponding cutting holes. A gear rod 29 is fixedly installed on each layered plate 18, and the two gear rods 29 on the two layered plates 18 on the same horizontal plane are meshed with the same pinion 30. The two layered plates 18 on the same horizontal plane are provided with a receiving groove 28 on the side close to each other. When the two layered plates 18 are close to each other, the gear rod 29 can be driven to slide in the receiving groove 28.

[0044] When the impact head 4 drives the sampling gear cylinder 8 to drill into the ground, the sampling outer tube 6 and the extension rod 1 are also screwed into the soil. When the screwing is completed, the impact head 4 is separated from the connecting rod 2 by pulling out the R-shaped pin 3. At this time, the electric telescopic sleeve 22 retracts into the storage box 9, and the motor 15 is turned on. Then the motor 15 is turned on to drive the spur gear 3 27 to rotate, and the spur gear 3 27 rotates to drive the spur gear 2 23 to rotate. The spur gear 2 23 rotates through multiple splicing shafts 12 to drive multiple small gears 30 to rotate (when rotating in the same direction, the force generated by the multiple splicing shafts 12 is not enough to separate the wedge block 13 from the sliding groove). The rotation of the gear 30 drives the two gear rods 29 to rotate in the direction of approaching each other, driving the corresponding two layered plates 18 to approach each other to cut the sampled soil in the plastic film 21. The setting of the electric telescopic sleeve 22 can prevent the plastic film 21 from being damaged by gravel, sand and the like in the sampled soil during the drilling process when drilling and sampling the soil, thereby ensuring the integrity of the plastic film 21 after the soil sampling is completed. At the same time, by cooperating with the cutting of the sampled soil, the long-term contact between the soil and the air caused by the subsequent distribution detection of the soil at different depths can be avoided, resulting in changes in the internal moisture characteristics of the sampled soil.

[0045] Reference Fig.11 , Fig.12Two layered plates 18 located on the same horizontal plane are provided with square grooves, tightening grooves and installation grooves on the sides close to each other. An electric push rod 32 is fixedly installed on the upper surface of each square groove, and a circular cutting blade 31 is fixedly installed on the driving end of the electric push rod 32. A short rod is fixedly installed on each circular cutting blade 31, and each short rod rotates in the corresponding square groove. A protective groove plate 33 is fixedly installed in each square groove, and each circular cutting blade 31 slides in the corresponding protective groove plate 33 to prevent the circular cutting blade 31 from damaging the layered plate 18.

[0046] A rebound spring 36 is fixedly installed in each mounting groove, a trigger block 35 is fixedly installed on each rebound spring 36, and an extrusion plate 34 is fixedly installed on each trigger block 35. The rebound spring 36 and the extrusion plate 34 installed on the same trigger block 35 are staggered (not located on the same straight line). When two adjacent layered plates 18 approach each other and abut against the sampled soil, multiple extrusion plates 34 abut against the sampled soil and squeeze the corresponding trigger block 35 inwardly. Since the rebound spring 36 and the extrusion plate 34 are not located on the same straight line, the inward thrust of the extrusion plate 34 cannot be directly transmitted to the rebound spring 36, which will cause the trigger block 35 to tilt. An elastic rubber band is commonly sleeved on the two trigger blocks 35 on the same horizontal plane. When the corresponding two trigger blocks 35 tilt, the elastic rubber bands on the two trigger blocks 35 fall off the two trigger blocks 35 and are tightly sleeved on the plastic film 21 to preliminarily cut the sampled soil.

[0047] Then, the motor 2 16 is turned on to drive the rotating shaft 19 to rotate. The rotation of the rotating shaft 19 drives the two spur gears 20 and the two transfer gears 37 to rotate. The two transfer gears 37 rotate and drive the reversing gear ring 24 to rotate in the opposite direction through the corresponding transmission gear 38, thereby driving the two adjacent arc gear rings 26 to rotate in opposite directions, so as to realize the rotation of the upper and lower adjacent corresponding stratification plates 18 in opposite directions, and cut the sampled soil (there are pores of various sizes in the sampled soil, which have an important influence on the shear strength of the sampled soil. Applying opposite cutting forces will destroy the pore structure inside the sampled soil, resulting in deformation and destruction of the pores, thereby making the sampled soil easier to break), improve the cutting effect of the sampled soil, and at the same time, the electric push rod 32 pushes the circular cutting blade 31 out of the square groove, and cooperates with the rotation of the stratification plate 18 to perform circular cutting on the sampled soil, so that the soil is completely stratified.

[0048] When the sampling soil is cut, the extension rod 1, the fixed joint 7, the sampling outer tube 6 and the sampling tooth cylinder 8 are pulled out of the soil, and then the sampling tooth cylinder 8 is rotated to separate it from the sampling outer tube 6, and then the sampling outer tube 6 is rotated to separate it from the fixed joint 7, the sampling outer tube 6 and the sampling inner tube 10 are opened, and the plastic film 21 and the sampling soil that have been cut inside are taken out to complete the sampling. The plastic film 21 divides the sampling soil into several parts, which can prevent the humidity, temperature or other characteristics of the soil from changing, maintain the original nature of the soil sample, avoid soil changes or pollution, and at the same time ensure the cleanliness of the inner wall of the sampling inner tube 10 when sampling next time.

[0049] The specific operation steps of the present invention are as follows:

[0050] Sampling the soil: the impact head 4 drives the sampling tooth cylinder 8 to drill into the ground, driving the sampling outer tube 6 and the extension rod 1 to also screw into the soil. When the screwing is completed, the impact head 4 is separated from the connecting rod 2 by pulling out the R-shaped pin 3. At this time, the electric telescopic sleeve 22 retracts into the storage box 9;

[0051] Cutting the sampled soil: then the motor 15 is turned on to drive the spur gear 3 27 to rotate, the spur gear 3 27 rotates to drive the spur gear 2 23 to rotate, the spur gear 2 23 rotates through multiple splicing shafts 12 to drive multiple pinion gears 30 to rotate, the pinion gear 30 rotates to drive the two gear rods 29 to rotate in the direction of approaching each other, and drives the corresponding two layering plates 18 to approach each other. In the process of the two layering plates 18 approaching each other, the two squeezing plates 34 will be pressed against the sampled soil, and the corresponding two squeezing plates 34 will be squeezed by the squeezing force and squeeze the corresponding trigger blocks 35 under the elastic force of the rebound spring 36, so that the two trigger blocks 35 tilt in the same direction, and the elastic rubber bands fall off from the corresponding two trigger blocks 35 and are tightly fastened with the elastic force of the elastic rubber bands. It is sleeved on the plastic film 21. At this time, multiple layering plates 18 continue to squeeze the sampled soil to make the sampled soil between the layering plates 18 layered. Then, the motor 2 16 is turned on to drive the rotating shaft 19 to rotate. The rotation of the rotating shaft 19 drives the two spur gears 20 and the two transfer gears 37 to rotate. The two transfer gears 37 rotate through the corresponding transmission gears 38 to drive the reversing gear ring 24 to rotate in the opposite direction, thereby driving the two adjacent arc-shaped gear rings 26 to rotate in opposite directions, so that the upper and lower adjacent corresponding layering plates 18 rotate in opposite directions, cut the sampled soil, and improve the cutting effect of the sampled soil. At the same time, the electric push rod 32 pushes the ring cutting blade 31 out of the square groove, cooperates with the rotation of the layering plate 18 to ring cut the sampled soil so that the soil is completely layered.

[0052] Take out the sampled soil: after the cutting is completed, pull out the extension rod 1, the fixed joint 7, the sampling outer tube 6 and the sampling tooth cylinder 8 from the soil, then rotate the sampling tooth cylinder 8 to separate it from the sampling outer tube 6, and then rotate the sampling outer tube 6 to separate it from the fixed joint 7, open the sampling outer tube 6 and the sampling inner tube 10, and take out the plastic film 21 and the sampled soil that have been cut inside.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A soil sampling device for geotechnical compaction detection, comprising an impact head (4), characterized in that: A plurality of shock-absorbing handles (5) are fixedly mounted on the impact head (4); a sampling outer tube (6) is mounted on the impact head (4) via a connecting mechanism; a sampling gear cylinder (8) is threadedly mounted on the sampling outer tube (6); two spur gears (20) and two reverse gear rings (24) are mounted in the sampling outer tube (6) via a rotating mechanism; a limiting ring (17) is snap-fittedly mounted in the sampling outer tube (6); a sampling inner tube (10) is fixedly sleeved in the limiting ring (17); and the sampling outer tube (6), the limiting ring (17) and the sampling inner tube (10) are all installed in a spliced ​​manner; A plurality of splicing shafts (12) are installed on the sampling inner tube (10) through a driving mechanism, and the plurality of splicing shafts (12) are rotatably installed in the sampling outer tube (6), the upper ends of the plurality of splicing shafts (12) are provided with sliding grooves, the lower ends of the plurality of splicing shafts (12) are fixedly installed with wedge blocks (13) engaged in the corresponding sliding grooves, a storage box (9) is fixedly installed in the sampling inner tube (10), an electric telescopic sleeve (22) is fixedly installed in the storage box (9), the outer side of the storage box (9) and the lower inner tube opening of the sampling inner tube (10) are both set to a silicone material, and a plastic film (21) is adsorbed on the silicone setting of the outer side of the storage box (9) and the lower inner tube opening of the sampling inner tube (10); Two layered plates (18) are installed on each of the splicing shafts (12) via a reversing mechanism, and each layered plate (18) is slidably installed in the sampling outer tube (6), an elastic rubber band is installed between each two layered plates (18) via a tightening mechanism, and a circular cutting blade (31) is installed in each layered plate (18) via a secondary cutting mechanism; The clamping mechanism comprises a clamping groove and a mounting groove formed on the layered plate (18), a rebound spring (36) being fixedly mounted in each of the two mounting grooves, and a trigger block (35) being fixedly mounted on a corresponding rebound spring (36), an extrusion plate (34) used in conjunction with the mounting groove being fixedly mounted on each of the two trigger blocks (35), and an elastic rubber band being sleeved on the two trigger blocks (35) on the same horizontal plane.

2. A soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The connection mechanism comprises a socket formed on the impact head (4), the socket being provided with a connecting rod (2) via an R-shaped pin, the lower end of the connecting rod (2) being threadedly provided with an extension rod (1), the lower end of the extension rod (1) being threadedly provided with a fixed joint (7), and the sampling outer tube (6) being threadedly provided with a lower end of the fixed joint (7).

3. A soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The rotating mechanism comprises a rotating chamber and a plurality of rotating grooves provided in the sampling outer tube (6), and the plurality of rotating grooves are all connected to the rotating chamber, and two reversing gear rings (24) are respectively rotatably mounted in the corresponding rotating grooves, a motor 2 (16) is fixedly mounted in the rotating chamber, a rotating shaft (19) rotating in the rotating chamber is fixedly mounted on the driving end of the motor 2 (16), two transfer gears (37) are fixedly mounted on the rotating shaft (19), and two spur gears 1 (20) are fixedly mounted on the rotating shaft (19), the two spur gears 1 (20) and the two transfer gears (37) are arranged alternately, and the two spur gears 1 (20) and the two transfer gears (37) all rotate in the corresponding rotating grooves.

4. A soil sampling device for geotechnical compaction detection according to claim 3, characterized in that: A vertical rod is rotatably mounted in each of the two rotating grooves, a transmission gear (38) is rotatably mounted on each of the two vertical rods, and the two transmission gears (38) are respectively meshed with a corresponding transmission gear (37) and a corresponding reverse gear ring (24).

5. The soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The driving mechanism comprises a slide rail (14) fixedly mounted on the outside of the sampling inner tube (10), a slider (25) being slidably mounted on the slide rail (14), a motor 1 (15) being fixedly mounted on the slider (25), a spur gear 3 (27) being fixedly mounted on the driving end of the motor 1 (15), and a spur gear 2 (23) meshing with the spur gear 3 (27) being fixedly mounted on the upper end of the uppermost splicing shaft (12).

6. The soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The reversing mechanism comprises a pinion (30) fixedly mounted on the splicing shaft (12); a gear rod (29) meshing with the pinion (30) is fixedly mounted on the two layered plates (18); a receiving groove (28) is provided on one side of the two layered plates (18) close to each other, and the corresponding gear rod (29) slides in the receiving groove (28); and an arc-shaped gear ring (26) meshing with the corresponding spur gear 1 (20) or the reversing gear ring (24) is fixedly mounted on the splicing shaft (12).

7. The soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The rebound spring (36) and the extrusion plate (34) installed on each trigger block (35) are arranged alternately.

8. The soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The secondary cutting mechanism comprises a square groove formed on a layered plate (18), an electric push rod (32) being fixedly mounted in the square groove, a ring cutting blade (31) being fixedly mounted on a driving end of the electric push rod (32), and the ring cutting blade (31) being rotatably mounted in the square groove, a protective groove plate (33) being fixedly mounted in the square groove, and the ring cutting blade (31) slidingly sliding in the protective groove plate (33).

9. The soil sampling device for geotechnical compaction detection according to claim 1, characterized in that: The sampling inner tube (10) is provided with a plurality of cutting holes, and the two corresponding layered plates (18) are located at the corresponding cutting holes for coordinated use.

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