Split type high-precision soil organic matter detecting and sampling device and method thereof

Abstract

The invention discloses a split type high-precision soil organic matter detecting and sampling device and a method thereof, and belongs to the technical field of soil sampling device.The split type high-precision soil organic matter detecting and sampling device comprises a collecting assembly used for collecting soil, and the collecting assembly is connected with an installing and pressing assembly used for driving the collecting assembly to press downwards; a supporting assembly used for supporting the installation pressing assembly is detachably installed on the installation pressing assembly, the supporting assembly is connected with the outer end of the collecting assembly, and the inner end of the collecting assembly is connected with a discharging assembly used for discharging soil in the collecting assembly; the installation pressing assembly comprises an installation assembly and a pressing assembly, the installation assembly is arranged at the outer end of the collection assembly in a sleeving mode, the pressing assembly is installed on the installation assembly and connected with the collection assembly, the pressing end of the pressing assembly is used in cooperation with the discharging assembly, and the supporting assembly is installed at the outer end of the installation assembly. In this way, the split design of the sampling device is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling devices, and in particular to a split high-precision soil organic matter detection sampling device and a method thereof. Background Art

[0002] Soil sampling devices are tools used to collect samples from soil and are commonly used in agriculture, environmental monitoring, soil science and other fields.

[0003] Among many existing technologies, Chinese patent application CN108731969B discloses a soil sampling device, which includes a support frame, a piston member, a power-assisting device and a sampling tube with two upper and lower openings; the sampling tube is vertically arranged on the support frame, the sampling tube is threadedly connected to the support frame and can move vertically, and the piston member is inserted in the sampling tube. Support frame, piston member, power-assisting device and a sampling tube with two upper and lower openings; the sampling tube is vertically arranged on the support frame, the sampling tube is threadedly connected to the support frame and can move vertically, and the piston member is inserted in the sampling tube.

[0004] However, this patent application cannot realize a split design of the device to facilitate device maintenance.

[0005] Based on this, the present invention designs a split-type high-precision soil organic matter detection sampling device and method to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a split-type high-precision soil organic matter detection sampling device and method thereof.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A split high-precision soil organic matter detection sampling device, comprising a collection component for soil collection, the collection component is connected to a mounting and pressing component for driving the collection component to be pressed downward, a support component for supporting the mounting and pressing component is detachably mounted on the mounting and pressing component, the support component is connected to the outer end of the collection component, and the inner end of the collection component is connected to a discharge component for discharging the soil therein;

[0009] The installation down-pressing assembly includes an installation assembly and a down-pressing assembly. The installation assembly is sleeved on the outer end of the collecting assembly. The down-pressing assembly is installed on the installation assembly. The down-pressing assembly is connected to the collecting assembly. The down-pressing end of the down-pressing assembly is used in conjunction with the discharge assembly. The supporting assembly is installed on the outer end of the installation assembly.

[0010] Furthermore, the collecting assembly includes a lower collecting tube, an upper collecting tube and an annular ratchet groove, the upper collecting tube is fixedly connected to the upper end of the lower collecting tube, annular ratchet grooves are evenly spaced on the outer wall of the upper collecting tube, the annular ratchet grooves are connected to the pressing assembly, the discharge assembly is connected to the inner walls of the lower collecting tube and the upper collecting tube, and the supporting assembly is connected to the outer wall of the lower collecting tube.

[0011] Furthermore, the installation assembly includes an installation sleeve, a first through port, a second through port, a first installation plate and a second installation plate. The installation sleeve is arranged on the outer end of the upper collection tube, the first through port and the second through port are respectively opened on the left and right sides of the outer wall of the installation sleeve, and the first installation plate and the second installation plate are respectively fixedly installed on the inner walls of the first through port and the second through port;

[0012] The support assembly is mounted on the outer wall of the mounting sleeve;

[0013] The pressing assembly is connected to the first mounting plate and the second mounting plate.

[0014] Furthermore, the pressing assembly includes a pawl 1, a spring sheet, a hinge block, a pawl 2 and a pressure rod, the pawl 1 is hinged to the inner wall of the mounting plate 1, one end of the spring sheet is fixedly connected to the inner wall of the mounting plate 1, the other end of the spring sheet is abutted against the upper side wall of the pawl 1, the pawl 1 is used in conjunction with the annular ratchet groove for one-way engagement, the hinge block is hinged to the inner wall of the mounting plate 2, the pawl 2 is hinged to the hinge block through a spring shaft, the pawl 2 is used in conjunction with the annular ratchet groove for one-way engagement, the pressure rod is detachably connected to the hinge block, and the pressure rod is used in conjunction with the discharge assembly.

[0015] Furthermore, the pressure rod is threadedly connected to the hinge block.

[0016] Furthermore, the discharge assembly includes a piston, a push rod, a connecting sleeve and a bolt knob. The piston is slidably connected to the inner walls of the lower collecting tube and the upper collecting tube. The lower end of the push rod is fixedly connected to the piston, and the upper end of the push rod is fixedly connected to the outer wall of the connecting sleeve. A threaded hole is penetrated through the outer wall of the connecting sleeve for cooperating with the threaded connection of the bolt knob. The connecting sleeve cooperates with the pressure rod to pass through and contact with it, and the bottom of the bolt knob cooperates with the outer wall of the pressure rod to contact and lock it.

[0017] Furthermore, the support assembly includes a ring 1, a support rod 1, a pin, a support rod 2 and a ring 2, the ring 1 is threadedly connected to the outer wall of the mounting sleeve, the support rod 1, the pin and the support rod 2 are each provided with three and are evenly spaced around the central axis of the mounting sleeve, one end of the support rod 1 is hinged to the outer wall of the ring 1, the other end of the support rod 1 is fixedly connected to the pin, one end of the support rod 2 is hinged to the side wall of the support rod 1, the other end of the support rod 2 is hinged to the outer wall of the ring 2, and the ring 2 is slidably connected to the outer wall of the lower collection tube.

[0018] Furthermore, through holes for the pressure rod to pass through are provided on both left and right sides of the upper end of the outer wall of the upper collection tube.

[0019] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a split high-precision soil organic matter detection sampling device, comprising the following steps:

[0020] Step 1: open any support rod 1 outward, the upper end of support rod 1 rotates around collar 1, the lower end of support rod 1 drives support rod 2 to rotate, support rod 2 drives collar 2 to slide downward along the outer wall of the lower collection tube, collar 2 drives the other two support rods 2 and support rod 1 to move, so that the three groups of support rods 1 are synchronously unfolded, and the pins are inserted into the soil at the location where collection is required;

[0021] Step 2: Tighten the threads of the pressure rod and the hinge block, and bend the pressure rod downward. The pressure rod drives the hinge block to rotate on the second mounting plate, and the hinge block drives the second pawl to slide along the annular ratchet groove. When the second pawl is engaged with an annular ratchet groove, bend the pressure rod upward again. The second pawl pushes the annular ratchet groove downward, and the annular ratchet groove pushes the upper collection tube downward. The upper collection tube pushes the lower collection tube into the soil. At the same time, when the upper collection tube moves downward, the first pawl slides from one annular ratchet groove to another annular ratchet groove and engages.

[0022] Step 3, repeat step 2 until the lower collection tube reaches the set collection depth, remove the pressure rod from the hinge block, and pass the pressure rod through the two through holes opened on the outer wall of the upper collection tube, pull the pressure rod upward, and the pressure rod pulls the upper collection tube to pull the lower collection tube out of the soil;

[0023] Step 4: At the same time, since both the first pawl and the second pawl are unidirectionally meshed with the annular ratchet groove, the annular ratchet groove drives the pressing assembly and the mounting assembly as a whole through the first pawl and the hinge block, and the mounting sleeve drives the supporting assembly as a whole to lift up;

[0024] Step five, pull the pressure rod out of the through hole, and then insert it into the interior of the connecting sleeve, and lock the bolt knob against the pressure rod by turning the bolt knob; insert the piston into the upper collection tube, and push the pressure rod so that the push rod discharges the soil in the lower collection tube from the lower port of the lower collection tube.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. The support component and the installation pressing component are detachably connected, and the collection component and the installation component are separable, thereby realizing a split design of the device for easy maintenance of the device. At the same time, the support component supports the installation component, and the pressing component drives the collection component to press down into the soil to collect the soil, thereby realizing that the collection component collects the soil more labor-savingly;

[0026] 2. The pressure rod cooperates with the hinge block, the through hole and the mounting sleeve respectively, so that the pressure rod can be used for multiple purposes, thereby reducing the cost of the equipment and the number of equipment parts, making it easier to carry and store. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The present invention is a three-dimensional high-precision soil organic matter detection sampling device. Figure 1 ;

[0029] Figure 2 It is a front view of a split type high-precision soil organic matter detection sampling device of the present invention;

[0030] Figure 3 It is a left view of a split type high-precision soil organic matter detection sampling device of the present invention;

[0031] Figure 4 The present invention is a three-dimensional high-precision soil organic matter detection sampling device. Figure 2 ;

[0032] Figure 5 For along Figure 3 AA direction cross-sectional view;

[0033] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0034] Figure 7 for Figure 5 Enlarged view of point C in the middle.

[0035] The numbers in the figure represent:

[0036] 1. Collection component; 11. Lower collection tube; 12. Upper collection tube; 13. Annular ratchet groove; 2. Install the pressing component; 21. Install the component; 211. Install the sleeve; 212. Port 1; 213. Port 2; 214. Install plate 1; 215. Install plate 2; 22. Pressing component; 221. Ratchet 1; 222. Spring sheet; 223. Articulated block; 224. Ratchet 2; 225. Pressure rod; 3. Discharge component; 31. Piston; 32. Push rod; 33. Connecting sleeve; 34. Bolt knob; 4. Support component; 41. Ring 1; 42. Support rod 1; 43. Pin; 44. Support rod 2; 45. Ring 2; 5. Through hole; 6. Distance sensor. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0039] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 7 A split high-precision soil organic matter detection sampling device comprises a collection component 1 for soil collection, the collection component 1 is connected with a mounting pressing component 2 for driving the pressing component 1 to press down, a support component 4 for supporting the mounting pressing component 2 is detachably mounted thereon, the support component 4 is connected to the outer end of the collection component 1, and a discharge component 3 for discharging the soil therein is connected to the inner end of the collection component 1;

[0040] The installation down-pressing component 2 includes a mounting component 21 and a down-pressing component 22. The mounting component 21 is sleeved on the outer end of the collecting component 1. The down-pressing component 22 is installed on the mounting component 21. The down-pressing component 22 is connected to the collecting component 1. The down-pressing end of the down-pressing component 22 is used in conjunction with the discharge component 3. The support component 4 is installed on the outer end of the mounting component 21.

[0041] When the present invention is in use, the support component 4 is detachably connected to the installation pressing component 2, and the collection component 1 is separable from the installation component 21, thereby realizing a split type of the device. At the same time, the support component 4 is used to support the installation component 21, and the pressing component 22 is used to drive the collection component 1 to be pressed down into the soil and collect the soil, thereby realizing that the collection component 1 collects the soil more labor-savingly.

[0042] Embodiment 2: In some embodiments, Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, the collecting component 1 includes a lower collecting tube 11, an upper collecting tube 12 and an annular ratchet groove 13. The upper collecting tube 12 is fixedly connected to the upper end of the lower collecting tube 11. Annular ratchet grooves 13 are evenly spaced on the outer wall of the upper collecting tube 12. The annular ratchet grooves 13 are connected to the pressing component 22. The discharge component 3 is connected to the inner walls of the lower collecting tube 11 and the upper collecting tube 12. The support component 4 is connected to the outer wall of the lower collecting tube 11.

[0043] The installation assembly 21 includes an installation sleeve 211, a first opening 212, a second opening 213, a first installation plate 214 and a second installation plate 215. The installation sleeve 211 is sleeved on the outer end of the upper collection tube 12. The first opening 212 and the second opening 213 are respectively opened on the left and right sides of the outer wall of the installation sleeve 211. The first installation plate 214 and the second installation plate 215 are respectively fixedly installed on the inner walls of the first opening 212 and the second opening 213.

[0044] The support assembly 4 is installed on the outer wall of the installation sleeve 211;

[0045] The pressing assembly 22 is connected to the first mounting plate 214 and the second mounting plate 215 .

[0046] The pressing assembly 22 includes a ratchet 221, a spring sheet 222, a hinge block 223, a ratchet 224 and a pressure rod 225. The ratchet 221 is hinged to the inner wall of the mounting plate 214. One end of the spring sheet 222 is fixedly connected to the inner wall of the mounting plate 214. The other end of the spring sheet 222 is abutted against the upper side wall of the ratchet 221. The ratchet 221 is used in conjunction with the annular ratchet groove 13 for one-way engagement. The hinge block 223 is hinged to the inner wall of the mounting plate 215. The ratchet 224 is hinged to the hinge block 223 through a spring shaft. The ratchet 224 is used in conjunction with the annular ratchet groove 13 for one-way engagement. The pressure rod 225 is detachably connected to the hinge block 223. The pressure rod 225 is used in conjunction with the discharge assembly 3.

[0047] The pressing rod 225 is threadedly connected to the hinge block 223 .

[0048] The discharge assembly 3 includes a piston 31, a push rod 32, a connecting sleeve 33 and a bolt knob 34. The piston 31 is slidably connected to the inner walls of the lower collection tube 11 and the upper collection tube 12. The lower end of the push rod 32 is fixedly connected to the piston 31, and the upper end of the push rod 32 is fixedly connected to the outer wall of the connecting sleeve 33. The outer wall of the connecting sleeve 33 is penetrated by a threaded hole for threaded connection with the bolt knob 34. The connecting sleeve 33 cooperates with the pressure rod 225 to pass through and contact it, and the bottom of the bolt knob 34 cooperates with the outer wall of the pressure rod 225 to contact and lock it.

[0049] The support assembly 4 includes a collar 41, a support rod 42, a pin 43, a support rod 44 and a collar 45. The collar 41 is threadedly connected to the outer wall of the mounting sleeve 211. Three support rods 42, three pins 43 and three support rods 44 are provided, and are evenly spaced around the central axis of the mounting sleeve 211. One end of the support rod 42 is hinged to the outer wall of the collar 41, and the other end of the support rod 42 is fixedly connected to the pin 43. One end of the support rod 44 is hinged to the side wall of the support rod 42, and the other end of the support rod 44 is hinged to the outer wall of the collar 45. The collar 45 is slidably connected to the outer wall of the lower collection tube 11.

[0050] The left and right sides of the upper end of the outer wall of the upper collecting tube 12 are both provided with through holes 5 for the pressure rod 225 to pass through.

[0051] When the present invention is used, the pressure rod 225 cooperates with the hinge block 223, the through hole 5, and the connecting sleeve 33 respectively, so that the pressure rod 225 can be used for multiple purposes, thereby reducing the cost of the equipment and the number of equipment parts, thereby facilitating carrying and storage.

[0052] When the present invention is used, the lower collection tube 11 and the upper collection tube 12 can be taken out from one side of the installation sleeve 211 through the one-way engagement of the annular ratchet groove 13 with the ratchet 1 221 and the ratchet 2 224, thereby realizing the split design of the installation sleeve 211 and the lower collection tube 11 and the upper collection tube 12.

[0053] When the present invention is used, the annular ratchet groove 13 is an annular groove with a ratchet structure, which can be used in a one-way meshing manner with the ratchet 1 221 and the ratchet 224 .

[0054] It also includes a distance sensor 6 for detecting the sampling depth. The distance sensor 6 is fixedly mounted on the outer wall of the mounting sleeve 211 .

[0055] When the present invention is used, the distance sensor 6 detects the change in distance from the sampling soil surface, thereby obtaining the sampling depth with high precision.

[0056] Embodiment 3: In some embodiments, Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, a method for using a split high-precision soil organic matter detection sampling device includes the following steps:

[0057] Step 1: open any support rod 1 42 outward, the upper end of support rod 1 42 rotates around collar 1 41, the lower end of support rod 1 42 drives support rod 2 44 to rotate, support rod 2 44 drives collar 2 45 to slide downward along the outer wall of lower collection tube 11, collar 2 45 drives the other two support rods 2 44 and support rod 1 42 to move, so that the three groups of support rods 1 42 are synchronously unfolded, and the pin 43 is inserted into the soil at the location where collection is required;

[0058] Step 2, tighten the pressure rod 225 and the hinge block 223, bend the pressure rod 225 downward, the pressure rod 225 drives the hinge block 223 to rotate on the second mounting plate 215, the hinge block 223 drives the second ratchet 224 to slide along the annular ratchet groove 13, when the second ratchet 224 is engaged with an annular ratchet groove 13, bend the pressure rod 225 upward again, the second ratchet 224 pushes the annular ratchet groove 13 downward, the annular ratchet groove 13 pushes the upper collection tube 12 downward, the upper collection tube 12 pushes the lower collection tube 11 into the soil, and at the same time, when the upper collection tube 12 moves downward, the first ratchet 221 slides from one annular ratchet groove 13 to another annular ratchet groove 13 and engages;

[0059] Step 3, repeat step 2 until the lower collection tube 11 reaches the set collection depth, remove the pressure rod 225 from the hinge block 223, and pass the pressure rod 225 through the two through holes 5 opened on the outer wall of the upper collection tube 12, pull the pressure rod 225 upward, and the pressure rod 225 pulls the upper collection tube 12 to pull the lower collection tube 11 out of the soil;

[0060] Step 4: At the same time, since the pawl 1 221 and the pawl 2 224 are unidirectionally meshed with the annular ratchet groove 13, the annular ratchet groove 13 drives the pressing assembly 22 and the mounting assembly 21 as a whole through the pawl 1 221 and the hinge block 223, and the mounting sleeve 211 drives the supporting assembly 4 to be lifted as a whole;

[0061] Step five, pull out the pressure rod 225 from the through hole 5, and then insert it into the interior of the connecting sleeve 33, and tighten the bolt knob 34 so that the bolt knob 34 contacts and locks the pressure rod 225; insert the piston 31 into the upper collection tube 12, and push the pressure rod 225 so that the push rod 32 discharges the soil in the lower collection tube 11 through the lower port of the lower collection tube 11.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A split high-precision soil organic matter detection sampling device, comprising a collection component (1) for soil collection, characterized in that: The collecting component (1) is connected to a mounting and pressing component (2) for driving the mounting and pressing component (2) to be pressed downward, a supporting component (4) for supporting the mounting and pressing component (2) is detachably mounted thereon, the supporting component (4) is connected to the outer end of the collecting component (1), and the inner end of the collecting component (1) is connected to a discharging component (3) for discharging soil therein; The installation pressing assembly (2) comprises a mounting assembly (21) and a pressing assembly (22); the mounting assembly (21) is sleeved on the outer end of the collecting assembly (1); the pressing assembly (22) is mounted on the mounting assembly (21); the pressing assembly (22) is connected to the collecting assembly (1); the pressing end of the pressing assembly (22) cooperates with the discharge assembly (3); and the supporting assembly (4) is mounted on the outer end of the mounting assembly (21).

2. The split high-precision soil organic matter detection sampling device according to claim 1 is characterized in that: The collecting assembly (1) comprises a lower collecting tube (11), an upper collecting tube (12) and an annular ratchet groove (13); the upper collecting tube (12) is fixedly connected to the upper end of the lower collecting tube (11); annular ratchet grooves (13) are arranged at equal intervals on the outer wall of the upper collecting tube (12); the annular ratchet grooves (13) are connected to a pressing assembly (22); the discharge assembly (3) is connected to the inner walls of the lower collecting tube (11) and the upper collecting tube (12); and the support assembly (4) is connected to the outer wall of the lower collecting tube (11).

3. The split high-precision soil organic matter detection sampling device according to claim 2 is characterized in that: The installation assembly (21) comprises an installation sleeve (211), a first opening (212), a second opening (213), a first installation plate (214) and a second installation plate (215); the installation sleeve (211) is sleeved on the outer end of the upper collection tube (12); the first opening (212) and the second opening (213) are respectively opened on the left and right sides of the outer wall of the installation sleeve (211); the first installation plate (214) and the second installation plate (215) are respectively fixedly installed on the inner walls of the first opening (212) and the second opening (213); The support assembly (4) is installed on the outer wall of the installation sleeve (211); The pressing assembly (22) is connected to the first mounting plate (214) and the second mounting plate (215).

4. The split high-precision soil organic matter detection sampling device according to claim 3 is characterized in that: The pressing assembly (22) comprises a ratchet 1 (221), a spring sheet (222), a hinge block (223), a ratchet 2 (224) and a pressing rod (225); the ratchet 1 (221) is hinged to the inner wall of the mounting plate 1 (214); one end of the spring sheet (222) is fixedly connected to the inner wall of the mounting plate 1 (214); the other end of the spring sheet (222) is in contact with the upper side wall of the ratchet 1 (221); the ratchet 1 (221) is hinged to the inner wall of the mounting plate 1 (214); 221) is used in one-way meshing with the annular ratchet groove (13), the hinge block (223) is hinged to the inner wall of the second mounting plate (215), the second ratchet (224) is hinged to the hinge block (223) through a spring shaft, the second ratchet (224) is used in one-way meshing with the annular ratchet groove (13), the pressure rod (225) is detachably connected to the hinge block (223), and the pressure rod (225) is used in conjunction with the discharge assembly (3).

5. The split high-precision soil organic matter detection sampling device according to claim 4 is characterized in that: The pressure rod (225) is threadedly connected to the hinge block (223).

6. The split high-precision soil organic matter detection sampling device according to claim 5 is characterized in that: The discharge assembly (3) comprises a piston (31), a push rod (32), a connecting sleeve (33) and a bolt knob (34); the piston (31) is slidably connected to the inner walls of the lower collection tube (11) and the upper collection tube (12); the lower end of the push rod (32) is fixedly connected to the piston (31); the upper end of the push rod (32) is fixedly connected to the outer wall of the connecting sleeve (33); a threaded hole is penetrated through the outer wall of the connecting sleeve (33) for threaded connection with the bolt knob (34); the connecting sleeve (33) is passed through and abutted against the pressure rod (225); the bottom of the bolt knob (34) is abutted against the outer wall of the pressure rod (225) for locking.

7. The split high-precision soil organic matter detection sampling device according to claim 6 is characterized in that: The support assembly (4) comprises a collar 1 (41), a support rod 1 (42), an insertion pin (43), a support rod 2 (44) and a collar 2 (45); the collar 1 (41) is threadedly connected to the outer wall of the mounting sleeve (211); three support rods 1 (42), three insertion pins (43) and three support rods 2 (44) are provided and are evenly spaced around the central axis of the mounting sleeve (211); one end of the support rod 1 (42) is hinged to the outer wall of the collar 1 (41); the other end of the support rod 1 (42) is fixedly connected to the insertion pin (43); one end of the support rod 2 (44) is hinged to the side wall of the support rod 1 (42); the other end of the support rod 2 (44) is hinged to the outer wall of the collar 2 (45); the collar 2 (45) is slidably connected to the outer wall of the lower collection tube (11).

8. The split high-precision soil organic matter detection sampling device according to claim 7 is characterized in that: Through holes (5) for the pressure rod (225) to pass through are provided on both left and right sides of the upper end of the outer wall of the upper collection tube (12).

9. A method for using a split type high-precision soil organic matter detection and sampling device, using the split type high-precision soil organic matter detection and sampling device according to claim 8, characterized in that: The following steps are involved: Step 1: any support rod 1 (42) is opened outward, the upper end of the support rod 1 (42) rotates around the ring 1 (41), the lower end of the support rod 1 (42) drives the support rod 2 (44) to rotate, the support rod 2 (44) drives the ring 2 (45) to slide downward along the outer wall of the lower collection tube (11), the ring 2 (45) drives the other two support rods 2 (44) and the support rod 1 (42) to move, so that the three groups of support rods 1 (42) are synchronously unfolded, and the insertion needle (43) is inserted into the soil at the location where collection is required; Step 2, tighten the pressure rod (225) and the hinge block (223) by threading, and bend the pressure rod (225) downward, the pressure rod (225) drives the hinge block (223) to rotate on the second mounting plate (215), and the hinge block (223) drives the second ratchet (224) to slide along the annular ratchet groove (13), when the second ratchet (224) is engaged with an annular ratchet groove (13), bend the pressure rod (225) upward again, the second ratchet (224) pushes the annular ratchet groove (13) downward, the annular ratchet groove (13) pushes the upper collection tube (12) downward, the upper collection tube (12) pushes the lower collection tube (11) to be inserted into the soil, and at the same time, when the upper collection tube (12) moves downward, the first ratchet (221) slides from one annular ratchet groove (13) to another annular ratchet groove (13) and engages; Step 3, repeating step 2 until the lower collection tube (11) reaches the set collection depth, removing the pressure rod (225) from the hinge block (223), and passing the pressure rod (225) through the two through holes (5) opened on the outer wall of the upper collection tube (12), pulling the pressure rod (225) upward, and the pressure rod (225) pulls the upper collection tube (12) so that the lower collection tube (11) is pulled out of the soil; Step 4: At the same time, since the ratchet 1 (221) and the ratchet 2 (224) are unidirectionally meshed with the annular ratchet groove (13), the annular ratchet groove (13) drives the pressing assembly (22) and the mounting assembly (21) as a whole through the ratchet 1 (221) and the hinge block (223), and the mounting sleeve (211) drives the supporting assembly (4) to be lifted as a whole; Step 5: Pull out the pressure rod (225) from the through hole (5), and then insert it into the interior of the connecting sleeve (33), and screw the bolt knob (34) so ​​that the bolt knob (34) contacts and locks the pressure rod (225); insert the piston (31) into the upper collection tube (12), and push the pressure rod (225) so that the push rod (32) discharges the soil in the lower collection tube (11) through the lower port of the lower collection tube (11).

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