A rotary soil sample sampling device and method for soil testing

Abstract

A kind of rotating soil sample sampling device for soil detection, including mounting disc, the top surface of the mounting disc is integrally connected with cylindrical block in axial direction;Sleeve, its outer side is rotationally sleeved on the outside of the bearing, the top of the outer side of the sleeve is vertically symmetrical and connected with handle;Pressing screw rod, it is threadedly connected with the threaded hole that is opened in axial direction between the cylindrical block and the mounting disc;Linkage rod, its bottom end is vertically connected with U-shaped rod, the U-shaped rod is rotationally connected with the top of the end face of the sleeve corresponding to the handle by the rotating shaft of its bottom inner side face;Limiting piece, it is detachably installed on the top of the pressing screw rod in transverse direction, the end of the limiting piece is longitudinally slidably connected with the corresponding linkage rod;Drill rod;Sampling cylinder.The present application is only needed to hold handle rotating sleeve in the position of mounting disc for sampling personnel with relatively short height, without the aid of climbing appliance when rotating, convenient to use, and higher universality.

Description

Technical Field

[0001] This invention belongs to the field of soil sampling technology, and specifically relates to a rotary soil sample collection device and method for soil testing. Background Technology

[0002] Soil sampling and testing are an indispensable step in soil pollution prevention and control efforts to investigate the soil environment.

[0003] The existing rotary soil sampling device is inconvenient to use. When the pressing screw is turned, the sampling personnel who are relatively short need to use climbing equipment to hold the handle at the top of the pressing screw. It needs to be improved. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a rotary soil sample collection device and method for soil testing. The specific technical solution is as follows:

[0005] A rotary soil sampler for soil testing, the sampler comprising:

[0006] The mounting plate has at least three lugs circumferentially connected at equal intervals on its outer side. A support cone rod is hinged to the lugs. A cylindrical block is integrally connected to the top surface of the mounting plate axially. At least two bearings are axially limited and sleeved on the cylindrical block.

[0007] The sleeve has an inner circle and an outer square structure, and it is axially rotated and sleeved on the outside of the bearing. The top of the outer side of the sleeve is vertically and symmetrically connected with a handle.

[0008] The pressing screw is threadedly engaged with the threaded hole that is axially opened between the cylindrical block and the mounting plate;

[0009] A linkage rod, with a U-shaped rod vertically connected to its bottom end, the U-shaped rod being rotatably connected to the top of the end face of the corresponding sleeve facing the handle via a pivot on its bottom inner side;

[0010] A limiting member is detachably and laterally mounted on the top of the pressing screw, and the end of the limiting member is longitudinally slidably engaged with the corresponding linkage rod.

[0011] A drill rod, which is axially detachably connected to the bottom of the pressing screw;

[0012] The sampling tube is axially and detachably connected to the bottom of the drill pipe.

[0013] Furthermore, the limiting component includes a square collar, which is axially sleeved with the top of the pressing screw, and the two are limited and locked together by a first pin; the end face of the collar is symmetrically connected to a limiting plate, and the end face of the limiting plate is provided with a U-shaped limiting groove inwardly at the middle, and the limiting groove is longitudinally slidably locked with the corresponding linkage rod.

[0014] Furthermore, the top of the pressing screw is axially connected to an annular flange, and the collar is axially positioned on the annular flange.

[0015] Furthermore, the length of the vertical portion of the U-shaped rod is greater than the length of the handle, and the U-shaped rod is flipped outward and can pass through the handle.

[0016] Furthermore, the top of the drill rod is integrally connected with a connector in the axial direction, and the connector is axially inserted into the bottom of the pressing screw, and the two are locked together by a second pin.

[0017] Furthermore, the sampling cylinder adopts a split tube structure, and the end faces of the sampling cylinder are respectively axially connected with second studs. The second stud at the top of the sampling cylinder and the first stud axially integrated at the bottom of the drill rod are axially threaded together through a threaded tube, and the outer diameter of the threaded tube is the same as the outer diameter of the sampling cylinder. The second stud at the bottom of the sampling cylinder is axially threaded with a tube shoe with serrated bottom edge, and the outer diameter of the tube shoe is the same as the outer diameter of the sampling cylinder. The first stud and the second stud are both opposite to the thread direction of the pressing screw.

[0018] Furthermore, a pulling mechanism is provided between the sleeve and the drill rod; the pulling mechanism includes a sliding groove, the sliding groove is symmetrically installed longitudinally on the side of the sleeve, a pulling tongue is longitudinally slidably connected in the sliding groove, a rack is symmetrically arranged along the long side of the pulling tongue extending out of the sliding groove, a gear is correspondingly meshed with the rack, and the gear is axially fixedly connected to a protrusion installed vertically on the outer side of the bottom of the corresponding U-shaped rod; a hook is installed at the bottom of the outer surface of the pulling tongue; a pulling arm is detachably fixed laterally on the drill rod, and the ends of the pulling arm are respectively connected to the corresponding hooks through circular chain;

[0019] The tongue puller has two working states: a first working state and a second working state. In the first working state, the linkage rod is kept vertical and the top of the tongue puller is placed in the groove. In the second working state, the linkage rod is kept inclined and the top of the tongue puller extends out of the groove.

[0020] Furthermore, the boom assembly includes a cuboid boom plate with a through slot at its center. The slot is longitudinally inserted into the connector and the two are locked together by a second pin. Hooks are vertically and symmetrically connected to the end face of the boom plate along the center line of the slot. The hooks are detachably connected to the hooks on the same side of the boom via the circular chain.

[0021] Furthermore, the cross-section of the tongue puller is a T-shaped structure, and its bottom is longitudinally slidably connected to the groove.

[0022] A rotary soil sampling method for soil testing, comprising the following steps:

[0023] Step S1: Assembly and Fixing

[0024] First, at the sampling location, the mounting plate is kept horizontal, and the support cone is tilted, unfolded, and fixedly inserted into the ground. Then, on the ground, the limiting piece is fixedly assembled to the top of the pressing screw through the first pin, while the bottom of the pressing screw is vertically screwed out to below the threaded hole. Next, the top of the drill rod is axially connected to the bottom of the pressing screw through the second pin, and the bottom of the sampling tube is axially screwed onto the tube shoe. The top of the sampling tube is axially screwed to the bottom of the drill rod through the threaded tube.

[0025] Step S2: Rotary Soil Extraction

[0026] First, rotate the linkage rods on both sides upwards to a vertical position and engage them in the corresponding limiting grooves of the limiting components. Then, manually hold the handle and rotate the sleeve. The sleeve drives the linkage rod to rotate, and the linkage rod drives the pressing screw downwards through the limiting components. Together with the drill rod, the sampling tube is drilled into the soil to collect soil.

[0027] Step S3: Pull up the sampling cylinder

[0028] First, pull out the second pin, and manually hold the handle to turn the pressing screw upwards until the bottom of the pressing screw retracts to the threaded hole. Then, fix the pulling arm to the top of the drill rod using the second pin, and connect the hook of the pulling arm to the hook on the same side using a ring chain. Next, manually rotate both linkage rods outwards simultaneously. At this time, the pulling tongue moves upwards along the slide groove and is driven upwards by the ring chain to pull out the sample tube. Then, manually rotate both linkage rods inwards simultaneously. At this time, the pulling tongue retracts along the slide groove. Repeat this cycle to pull out the sample tube.

[0029] Step S4: Sampling tube removal

[0030] First, unscrew the threaded pipe from the drill rod and separate it from the sampling tube. At the same time, place the sampling tube horizontally on the ground and unscrew it from the tube shoe. The soil sample can then be removed by manually prying open the sampling tube.

[0031] The beneficial effects of this invention are:

[0032] This invention integrates a cylindrical block axially on the top surface of the mounting plate, and a sleeve is rotatably connected to the outside of the cylindrical block via a bearing. Symmetrical linkage rods are hinged on both sides of the top of the sleeve, and the linkage rods are longitudinally slidably engaged with the ends of the limiting components horizontally fixed to the top of the pressing screw. Simultaneously, a pair of handles are vertically and symmetrically connected to the top of the outer side of the sleeve. This allows shorter sampling personnel to easily grasp the handles and rotate the sleeve from the mounting plate position, eliminating the need for climbing equipment. It is convenient to use and has high versatility. Attached Figure Description

[0033] Figure 1 A schematic diagram of the structure of the present invention during soil drilling is shown;

[0034] Figure 2 A cross-sectional view of the assembly of the mounting plate and the sleeve in this invention is shown;

[0035] Figure 3 A top view of the sleeve structure in this invention is shown;

[0036] Figure 4 A schematic diagram of the linkage rod in this invention is shown;

[0037] Figure 5 A partial structural schematic diagram of the assembly of the limiting member and the pressing screw in this invention is shown;

[0038] Figure 6 A top view of the limiting member in this invention is shown;

[0039] Figure 7 An exploded view of the structure of the pressing screw, drill rod, and sampling cylinder in this invention is shown.

[0040] Figure 8 An exploded view of the sampling tube structure in this invention is shown;

[0041] Figure 9 A schematic diagram of the present invention during the pulling process is shown;

[0042] Figure 10 A schematic diagram of the lifting mechanism in this invention is shown;

[0043] Figure 11 A cross-sectional view of the assembly of the tongue and the groove in this invention is shown;

[0044] Figure 12 A top view of the structure of the pull-out arm component in this invention is shown.

[0045] The diagram shows: 1. Mounting plate; 11. Lug; 12. Support cone rod; 13. Cylindrical block; 131. Bearing; 14. Threaded hole; 2. Sleeve; 21. Handle; 3. Pressing screw; 31. First pin; 32. Annular flange; 33. Second pin; 4. Linkage rod; 41. U-shaped rod; 42. Rotating shaft; 43. Protruding rod; 5. Limiting component; 51. Ring; 52. Limiting plate; 521. Limiting groove; 6. Drill 61. Rod; 611. Connector; 62. First pin hole; 7. First stud; 7. Sampling cylinder; 71. Second stud; 72. Shoe; 721. Sawtooth; 73. Threaded tube; 8. Pulling mechanism; 81. Slide groove; 82. Pulling tongue; 821. Rack; 83. Gear; 84. Hook; 85. Circular chain; 86. Pulling arm; 861. Arm plate; 862. Slot; 8621. Second pin hole; 863. Hook. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0047] like Figures 1-4 As shown, a rotary soil sampler for soil testing is characterized in that the sampler comprises:

[0048] Mounting disc 1 has at least three lugs 11 circumferentially connected at equal intervals on its outer side. A support cone rod 12 is hinged to the lugs 11. A cylindrical block 13 is integrally axially connected to the top surface of the mounting disc 1. At least two bearings 131 are axially limited and sleeved on the cylindrical block 13.

[0049] Sleeve 2 has an inner circle and outer square structure, and is axially rotated and sleeved on the outside of bearing 131. A handle 21 is vertically and symmetrically connected to the top of the outer side of sleeve 2.

[0050] The pressing screw 3 is threadedly engaged with the threaded hole 14 that is axially opened between the cylindrical block 13 and the mounting plate 1.

[0051] Linkage rod 4, with a U-shaped rod 41 vertically connected to its bottom end. The U-shaped rod 41 is rotatably connected to the top of the end face of the sleeve 2 facing the handle 21 via a pivot 42 on its bottom inner side.

[0052] The limiting member 5 is detachably and laterally installed on the top of the pressing screw 3, and the end of the limiting member 5 is longitudinally slidably engaged with the corresponding linkage rod 4.

[0053] The drill rod 6 is axially detachably connected to the bottom of the pressing screw 3;

[0054] The sampling cylinder 7 is axially and detachably connected to the bottom of the drill rod 6.

[0055] By adopting the above technical solution, the sampling device integrates a cylindrical block 13 axially connected to the top surface of the mounting plate 1, and a sleeve 2 is rotatably sleeved on the outside of the cylindrical block 13 via bearings. Linkage rods 4 are symmetrically hinged on both sides of the top of the sleeve 2. The linkage rods 4 are longitudinally slidably engaged with the ends of the limiting members 5 that are laterally fixed to the top of the pressing screw 3. Simultaneously, a pair of handles 21 are vertically and symmetrically connected to the top of the outer side of the sleeve 2. This allows shorter sampling personnel to easily grasp the handles 21 from the position of the mounting plate 1. The rotating sleeve 2 is easy to use and has high versatility because it does not require climbing equipment. The sleeve 2 drives the linkage rod 4 to rotate, and the linkage rod 4 drives the pressing screw 3 to rotate downward through the limiting member 5. Together with the drill rod 6, the sampling cylinder 7 is drilled into the soil to collect soil. At least two bearings 131 are axially limited and sleeved on the cylindrical block 13, which can increase the height of the sleeve 2 and the reliability of rotation. The sleeve 2 has an inner circle and outer square structure, which facilitates the hinge of the U-shaped rod 41, so that the linkage rod 4 and the pressing screw 3 are in the same vertical plane.

[0056] like Figure 5 and 6 As shown, the limiting member 5 includes a square collar 51, which is axially sleeved with the top of the pressing screw 3 and the two are limited and locked by a first pin 31; the end face of the collar 51 is symmetrically connected to a limiting plate 52, and the end face of the limiting plate 52 is provided with a U-shaped limiting groove 521 in the middle, which is longitudinally slidably locked with the corresponding linkage rod 4.

[0057] By adopting the above technical solution, the limiting component 5 and the pressing screw 3 can be detachably assembled and connected, which is convenient for disassembly, assembly and transportation; the square structure collar 51 is convenient for axially stable engagement with the top of the pressing screw 3; the U-shaped limiting groove 521 opened on the end face of the limiting plate 52 is convenient for the linkage rod 4 to be engaged or disengaged.

[0058] like Figure 5 As shown, the top of the pressing screw 3 is axially connected to an annular flange 32, and the collar 51 is axially positioned on the annular flange 32.

[0059] By adopting the above technical solution, the annular flange 32 can reduce the supporting force of the first pin 31 and extend its service life.

[0060] like Figure 1 and 4 As shown, the length of the vertical part of the U-shaped rod 41 is greater than the length of the handle 21, and the U-shaped rod 41 is flipped outward and can pass through the handle 21.

[0061] By adopting the above technical solution, the linkage rod 4 can be flipped outward to the same side as the support cone rod 12 when not in use, which facilitates storage and transportation.

[0062] like Figure 7 As shown, the top of the drill rod 6 is axially integrally connected with a connector 61, which is axially inserted into the bottom of the pressing screw 3, and the two are locked together by a second pin 33.

[0063] By adopting the above technical solution, the connector 61 is designed to be detachably connected to the pressing screw 3, making assembly more convenient.

[0064] like Figure 7 and 8 As shown, the sampling cylinder 7 adopts a split tube structure. The end faces of the sampling cylinder 7 are axially connected with second studs 71. The second stud 71 at the top of the sampling cylinder 7 is axially threadedly connected to the first stud 62 at the bottom of the drill rod 6 through a threaded tube 73, and the outer diameter of the threaded tube 73 is the same as the outer diameter of the sampling cylinder 7. The second stud 71 at the bottom of the sampling cylinder 7 is axially threaded with a tube shoe 72 whose bottom edge is circumferentially provided with serrations 721, and the outer diameter of the tube shoe 72 is the same as the outer diameter of the sampling cylinder 7. The first stud 62 and the second stud 71 are both opposite to the thread direction of the pressing screw 3.

[0065] By adopting the above technical solution, the sampling tube 7 adopts a split tube structure, which facilitates the later extraction of soil samples; the end of the sampling tube 7 is fitted with a threaded tube 73 and a tube shoe 72 to facilitate axial connection with the drill rod 6; the outer diameter of the threaded tube 73 and the tube shoe 72 are the same as the outer diameter of the sampling tube 7, so as not to hinder the drilling of the sampling tube 7 in the soil; the first stud 62 and the second stud 71 are opposite to the thread direction of the pressing screw 3, so that the drill rod 6 and the sampling tube 7 will not disintegrate during the downward screwing process of the pressing screw 3.

[0066] like Figure 9 and 10 As shown, a pulling mechanism 8 is provided between the sleeve 2 and the drill rod 6; the pulling mechanism 8 includes a groove 81, the groove 81 is symmetrically installed longitudinally on the side of the sleeve 2, a pull tongue 82 is longitudinally slidably connected in the groove 81, a rack 821 is symmetrically arranged along the long side of the pull tongue 82 extending out of the groove 81, a gear 83 is correspondingly meshed with the rack 821, and the gear 83 is axially fixedly connected to the protruding rod 43 vertically installed on the outer side of the bottom of the corresponding U-shaped rod 41; a hook 84 is installed on the bottom of the outer surface of the pull tongue 82; a pull arm 86 is detachably fixed laterally on the drill rod 6, and the ends of the pull arm 86 are respectively connected to the corresponding hooks 84 through a circular chain 85.

[0067] The tongue puller 82 is divided into a first working state and a second working state. In the first working state, the linkage rod 4 is kept vertical and the top of the tongue puller 82 is placed in the slide groove 81. In the second working state, the linkage rod 4 is kept inclined and the top of the tongue puller 82 extends to the outside of the slide groove 81.

[0068] By adopting the above technical solution, the manual gripping of the linkage rod 4 rotates outward, which drives the gear 83 to rotate synchronously. The gear 83 then drives the pull tongue 82 to move longitudinally upward along the slide groove 81 through the rack 821. The pull tongue 82 then pulls out the drill rod 6 and the sampling cylinder 7 through the circular chain 85 and the pull arm 86. The pull mechanism 8 cleverly uses the corresponding linkage rod 4 as a lever-type swing arm, so that the gear 83 can drive the pull tongue 82 to move longitudinally back and forth to pull out the sampling cylinder 7. There is no need to add an extra set of pull devices. This can ensure the longitudinally stable pulling out of the sampling cylinder 7, reduce equipment costs, and make it easy to carry.

[0069] like Figure 10 and 12 As shown, the boom assembly 86 includes a cuboid boom plate 861 with a slot 862 extending through the center of the boom plate 861. The slot 862 is longitudinally inserted into the connector 61, and the two are locked together by the second pin 33. Hooks 863 are vertically and symmetrically connected to the end face of the boom plate 861 along the center line of the slot 862. The hooks 863 and the hooks 84 on the same side are detachably connected by the circular chain 85.

[0070] By adopting the above technical solution, the slot 862 at the center of the arm plate 861 in the arm puller 86 can be locked and connected to the connector 61 of the drill rod 6 by the original second pin 33, effectively utilizing the original structure of the equipment, without the need to add a new connection and fixing method to the arm puller 86, thus reducing the cost of equipment modification; the two sets of hooks 863 set opposite to each other on the end face of the arm plate 861 make the circular chain 85 on the same side cross to form a guide V-shaped structure, making the sampling cylinder 7 more stable and reliable during the pulling process.

[0071] like Figure 11 As shown, the cross-section of the tongue 82 is a T-shaped structure, and its bottom is longitudinally slidably connected to the groove 81.

[0072] By adopting the above technical solution, the tongue 82 with a T-shaped cross-section can better maintain its longitudinal sliding connection with the groove 81.

[0073] A rotary soil sampling method for soil testing as described above, the sampling method comprising the following steps:

[0074] Step S1: Assembly and Fixing

[0075] First, at the sampling location, the mounting plate 1 is kept horizontal, and the support cone rod 12 is tilted, unfolded, and fixedly inserted into the ground. Then, on the ground, the limiting member 5 is fixedly assembled to the top of the pressing screw 3 through the first pin 31, and the bottom of the pressing screw 3 is vertically screwed out to below the threaded hole 14. Next, the top of the drill rod 6 is axially connected to the bottom of the pressing screw 3 through the second pin 33, and the bottom of the sampling cylinder 7 is axially screwed onto the tube shoe 72. The top of the sampling cylinder 7 is axially screwed to the bottom of the drill rod 6 through the threaded tube 73.

[0076] Step S2: Rotary Soil Extraction

[0077] First, rotate the linkage rods 4 on both sides upwards to a vertical position and insert them into the limiting groove 521 of the limiting member 5. Then, manually hold the handle 21 and rotate the sleeve 2. The sleeve 2 drives the linkage rod 4 to rotate, and the linkage rod 4 drives the pressing screw 3 to rotate downwards through the limiting member 5. Together with the drill rod 6, the sampling cylinder 7 is drilled into the soil to collect soil.

[0078] Step S3: Pull up the sampling cylinder

[0079] First, pull out the second pin 33, and manually hold the handle 21 to screw the pressing screw 3 upwards until the bottom of the pressing screw 3 is back into the threaded hole 14; then, fix the pulling arm 86 to the top of the drill rod 6 through the second pin 33, and connect the hook 863 of the pulling arm 86 and the hook 84 on the same side through the ring chain 85 respectively; then, manually rotate the two linkage rods 4 outwards at the same time, at this time, the pulling tongue 82 moves upwards along the slide groove 81, and is driven upwards to pull out the sample cylinder 7 through the ring chain 85; then, manually rotate the two linkage rods 4 inwards at the same time, at this time, the pulling tongue 82 retracts along the slide groove 81, and so on, to pull out the sample cylinder 7;

[0080] Step S4: Sampling tube removal

[0081] First, unscrew the threaded pipe 73 from the drill rod 6 and separate it from the sampling tube 7. At the same time, place the sampling tube 7 horizontally on the ground and unscrew it from the tube shoe 72. The soil sample can be removed by manually prying open the sampling tube 7.

[0082] By adopting the above technical solution, the assembly and fixing of the entire sampling device is orderly, the rotation and soil extraction operation is convenient, the subsequent soil removal is convenient, and the integrity of the extracted soil sample is also good.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary soil sample sampling device for soil testing, characterized by, The sampling device comprises: The outer side of the mounting disc (1) is connected with at least three lugs (11) at equal intervals in the circumferential direction, the lugs (11) are hingedly connected with supporting conical rods (12), the top surface of the mounting disc (1) is integrally connected with a cylindrical block (13) in the axial direction, the cylindrical block (13) is sleeved with at least two bearings (131) in the axial direction; The sleeve (2) has an inner circular and outer square structure, is sleeved on the outer side of the bearings (131) in the axial direction, and the top of the outer side of the sleeve (2) is vertically and symmetrically connected with a handle (21); The pressing screw rod (3) is threadedly connected with a threaded hole (14) which is axially and penetratingly formed between the cylindrical block (13) and the mounting disc (1); The linkage rod (4) is vertically connected with a U-shaped rod (41) at the bottom end, the U-shaped rod (41) is rotatably connected with the top of the end surface of the sleeve (2) which faces the handle (21) through the rotation shaft (42) on the inner side of the bottom surface thereof; The limiting piece (5) is detachably installed on the top of the pressing screw rod (3) in the transverse direction, the end of the limiting piece (5) is longitudinally and slidingly connected with the corresponding linkage rod (4); The drill rod (6) is axially and detachably connected with the bottom of the pressing screw rod (3); The sampling cylinder (7) is axially and detachably connected with the bottom of the drill rod (6); The limiting piece (5) comprises a square sleeve ring (51), the sleeve ring (51) is axially and sleeved with the top of the pressing screw rod (3) and is limitedly connected therebetween through the first bolt (31); the end surface of the sleeve ring (51) is vertically and symmetrically connected with a limiting plate (52), the middle part of the end surface of the limiting plate (52) is inwardly and formed with a U-shaped limiting groove (521), and the limiting groove (521) is longitudinally and slidingly connected with the corresponding linkage rod (4); The top of the drill rod (6) is integrally connected with a connecting head (61) in the axial direction, the connecting head (61) is axially and insertedly connected with the bottom of the pressing screw rod (3) and is limitedly connected therebetween through the second bolt (33); A pulling mechanism (8) is arranged between the sleeve (2) and the drill rod (6); the pulling mechanism (8) comprises a sliding groove (81), the sliding groove (81) is longitudinally and symmetrically installed on the side surface of the sleeve (2), a pull tongue (82) is longitudinally and slidingly connected in the sliding groove (81), the pull tongue (82) is provided with a rack (821) on the side surface thereof which extends out of the sliding groove (81) and is symmetrically arranged along the long edge direction thereof, a gear (83) is engagedly connected with the rack (821), the gear (83) is axially and fixedly connected with a protruding rod (43) which is vertically installed on the outer side surface of the bottom of the corresponding U-shaped rod (41); a hook (84) is installed on the outer vertical surface of the pull tongue (82); a pull arm piece (86) is detachably and fixedly arranged on the drill rod (6) in the transverse direction, the ends of the pull arm piece (86) are connected with the corresponding hooks (84) through a circular link chain (85). The tongue (82) is divided into a first working state and a second working state, in the first working state, the linkage rod (4) is kept vertical, and the top of the tongue (82) is placed in the chute (81); in the second working state, the linkage rod (4) is kept inclined, and the top of the tongue (82) extends outside the chute (81).

2. A rotating soil sample sampling device for soil testing according to claim 1, characterized in that: The top of the pressing screw rod (3) is axially connected with a ring-shaped flange (32), and the sleeve ring (51) is axially placed on the ring-shaped flange (32).

3. The rotating soil sample sampling device for soil testing according to claim 1, wherein: The length of the vertical part of the U-shaped rod (41) is greater than the length of the handle (21), and the U-shaped rod (41) is turned outward and passes through the handle (21).

4. The rotating soil sample sampling device for soil testing according to claim 1, wherein: The sampling cylinder (7) adopts a split tube structure, and the end faces of the sampling cylinder (7) are respectively axially connected with second studs (71), the second stud (71) at the top of the sampling cylinder (7) is axially and threadedly connected with the first stud (62) axially and integrally connected to the bottom end of the drill rod (6) through a threaded pipe (73), and the outer diameter of the threaded pipe (73) is the same as the outer diameter of the sampling cylinder (7); the second stud (71) at the bottom of the sampling cylinder (7) is axially screwed with a pipe shoe (72) with sawteeth (721) arranged in the circumferential direction of the bottom edge, and the outer diameter of the pipe shoe (72) is the same as the outer diameter of the sampling cylinder (7); the first stud (62) and the second stud (71) are opposite in the screwing direction to the pressing screw rod (3).

5. A rotating soil sample sampling device for soil testing according to claim 4, characterized in that: The pulling arm member (86) includes an arm plate (861) of a cuboid structure, an insertion slot (862) is formed through the center of the arm plate (861), the insertion slot (862) is longitudinally inserted and matched with the connecting head (61), and the two are limitingly clamped by the second bolt (33); the end faces of the arm plate (861) are respectively vertically and symmetrically connected with hooks (863) along the center line of the insertion slot (862), and the hooks (863) are respectively detachably connected with the hooks (84) on the same side thereof through the circular link chain (85).

6. The rotating soil sample sampling device for soil testing according to claim 1, wherein: The cross section of the tongue (82) is T-shaped structure, and the bottom thereof is longitudinally and slidingly matched with the chute (81).

7. A rotary soil sample sampling method for soil detection, characterized by, The soil detection rotating soil sample sampling device is used for the method, and the method comprises the following steps: Step S1: assembly and fixation First, the installation disc (1) is kept horizontal at the sampling site, the support cone rod (12) is fixedly inserted into the ground after being inclined and unfolded, then the limiting member (5) is fixedly assembled on the top of the pressing screw rod (3) by the first bolt (31) on the ground, and the bottom of the pressing screw rod (3) is vertically rotated out below the threaded hole (14); then, the top of the drill rod (6) is axially connected with the bottom of the pressing screw rod (3) by the second bolt (33), the bottom of the sampling cylinder (7) is axially screwed with the pipe shoe (72), and the top of the sampling cylinder (7) is axially screwed with the bottom of the drill rod (6) through the threaded pipe (73); Step S2: rotating and taking soil First, the two sides of the linkage rod (4) is rotated upward into a vertical state, and the corresponding card into the limiting groove (521) of the limiting member (5), then, artificial holding handle (21) rotating sleeve (2), sleeve (2) driven linkage rod (4) rotation, linkage rod (4) is driven by limiting member (5) to bring down the press screw (3) into the rotation, and cooperate with the drill rod (6) to drill into the soil sampling cylinder (7) to take soil; Step S3: pull out the sampling cylinder First, pull out the second pin (33), artificial holding handle (21) to rotate the press screw (3) into the upward, until the bottom of the press screw (3) to retreat to the threaded hole (14); Then, the pull arm member (86) is fixedly assembled on the top of the drill rod (6) through the second pin (33), at the same time, the hook (863) of the pull arm member (86) and the lifting hook (84) on the same side are connected through the round link chain (85); Then, artificial rotate two linkage rods (4) outward at the same time, at this time, the pull tongue (82) moves upward along the sliding groove (81), and drives the upward pull sampling cylinder (7) through the round link chain (85), then, artificial rotate two linkage rods (4) inward at the same time, at this time, the pull tongue (82) retreats along the sliding groove (81), repeated operation, so as to pull out the sampling cylinder (7); Step S4: sampling cylinder retreats soil First, the threaded tube (73) is separated from the drill rod (6) of the sampling cylinder (7), at the same time, the sampling cylinder (7) is placed horizontally on the ground, and is separated from the tube shoe (72), artificial break open the sampling cylinder (7) to exit the soil sample.

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