Soil sampler for ecological environment monitoring

Abstract

The invention relates to the field of ecological environment monitoring soil sampling, in particular to an ecological environment monitoring soil sampler which comprises a supporting plate, a through groove is formed in one end of the top of the supporting plate in a penetrating mode, and a double-drive sampling assembly is arranged in the through groove. The double-drive sampling assembly comprises an internal pressure sampling sleeve, an external accompanying rotating sleeve, an internal thread sleeve, a driving turntable, an internal thread ring and an insertion limiting inner shaft. The outer accompanying rotating sleeve and the inner pressure sampling sleeve are independent and separated, and the inner threaded sleeve is arranged in the outer accompanying rotating sleeve for separation, so that heat generated by friction force in the rotating process of the outer accompanying rotating sleeve is not greatly transferred to the inner pressure sampling sleeve; therefore, frozen soil in the internal pressure sampling sleeve can be effectively prevented from being melted.

Description

Technical Field

[0001] The invention relates to the field of soil sampling for ecological environment monitoring, in particular to a soil sampler for ecological environment monitoring. Background Art

[0002] Ecological monitoring refers to the use of physical, chemical, biochemical, ecological and other technical means to monitor and test the various elements in the ecological environment, the relationship between organisms and the environment, and the structure and function of the ecosystem. Ecological environmental monitoring is the foundation of ecological environmental protection and an important support for the construction of ecological civilization.

[0003] When monitoring the ecological environment, in order to detect frozen soil, it is necessary to use a soil sampler to sample the soil; However, in the process of sampling, most existing samplers directly press down the sampling tube through a pressing mechanism so that the sampling tube is inserted into the ground for sampling. In order to avoid the problem that direct pressing is difficult due to the hard soil texture, most of them drive the sampling tube to rotate through a motor during the pressing process, so that the rotating sampling tube can be more smoothly inserted into the ground for sampling. However, when it is suitable for sampling frozen soil, the friction between the sampling tube and the soil during rotation will increase the temperature of the sampling tube and cause the frozen soil to partially melt, which will affect the sampling of the frozen soil. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a soil sampler for ecological environment monitoring.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a soil sampler for ecological environment monitoring, comprising a support plate, one end of the top of the support plate is penetrated with a through slot, a dual-drive sampling assembly is arranged inside the through slot, and the dual-drive sampling assembly comprises an internal pressure sampling sleeve, an external accompanying rotating sleeve, an internal thread sleeve, a driving turntable, an internal thread ring and an inserted limit inner shaft; The internal pressure sampling sleeve is a hollow cylindrical sleeve with an external thread groove on the outer cylinder wall, the bottom of the internal pressure sampling sleeve passes through the through groove and is fixedly connected to the cone cylinder, and a plurality of internal limit stroke grooves are evenly spaced on the inner cylinder wall of the internal pressure sampling sleeve; The outer accompanying rotating sleeve is rotatably sleeved on the outer wall of the internal pressure sampling sleeve, a gap is provided between the outer accompanying rotating sleeve and the internal pressure sampling sleeve, a spiral groove arranged in an equidistant spiral is provided on the outer wall of the outer accompanying rotating sleeve, and a plurality of vertically arranged outer driving stroke grooves are provided on the outer wall of the outer accompanying rotating sleeve at equal intervals; The internal thread sleeve is rotatably inserted in the gap between the external accompanying rotating sleeve and the internal pressure sampling sleeve, and an internal thread groove is provided on the inner cylinder wall of the internal thread sleeve. The internal thread sleeve is threadedly connected with the external thread groove on the internal pressure sampling sleeve through the internal thread groove, and a plurality of external thread adapter teeth are fixedly connected at equal intervals on the top of the internal thread sleeve; The driving turntable is arranged above the internal pressure sampling sleeve and the outer accompanying rotating sleeve, and is coaxially arranged with the internal pressure sampling sleeve and the outer accompanying rotating sleeve. The top of the driving turntable is provided with a matching adapting groove corresponding to the external thread adapting tooth. The bottom of the driving turntable is fixedly connected with a connecting sleeve, and the other end of the connecting sleeve extends to the inside of the internal pressure sampling sleeve. A plurality of accompanying driving rods are fixedly embedded on the outer wall of the driving turntable at equal intervals. The accompanying driving rods are movably inserted in the adjacent outer driving stroke grooves. The bottoms of the plurality of accompanying driving rods are fixedly connected with a connecting ring, and the connecting ring is rotatably inserted in the inside of the limiting ring groove. The external threaded adapter teeth on the top of the internal threaded sleeve move through the adapter grooves in sequence and the threaded sleeve is connected with an internal threaded ring for positioning; The inserted and limited inner shaft is movably inserted into the interior of the internal pressure sampling sleeve, a through hole is opened at the top of the inserted and limited inner shaft, and the connecting sleeve is rotatably inserted into the interior of the through hole, a square hole is opened at the inner bottom of the through hole, a plurality of limit rods are fixedly connected at equal intervals on the outer wall of the inserted and limited inner shaft, the limit rods are slidably inserted into the interior of the internal limit stroke groove, the internal pressure sampling sleeve is extended from the bottom of the inserted and limited inner shaft and a plurality of second pins are fixedly connected at equal intervals.

[0006] Specifically, the top of the support plate is fixedly connected with a Z-shaped support frame, a reduction motor is installed on the top of the Z-shaped support frame, a slot is penetrated through the top of the Z-shaped support frame away from the reduction motor, the output end of the reduction motor movably passes through the Z-shaped support frame and is connected to a first transmission wheel, the first transmission wheel is connected to a second transmission wheel through a transmission belt, the bottom of the second transmission wheel is fixedly connected with a driving sleeve, the driving sleeve is fixedly connected to the driving turntable, the second transmission wheel is located directly below the slot, and the driving sleeve is cocentrically arranged directly above the connecting sleeve; The reduction motor comprises a servo motor, a worm gear set and a mounting housing, the mounting housing is mounted on the top of the Z-shaped support frame by bolts, the servo motor and the worm gear set are mounted inside the mounting housing, the worm in the worm gear set is fixedly connected to the output end of the servo motor, the worm wheel in the worm gear set is meshedly connected to the worm, and a rotating shaft is fixedly plugged on the worm wheel, and the end of the rotating shaft moves through the mounting housing and the Z-shaped support frame in sequence and is fixedly connected to the first transmission wheel; A mounting plate is provided above the Z-shaped support frame, and a locking square shaft and a locking pin are fixedly connected to the bottom of the mounting plate. The locking pin is inserted into the hole at the top of the Z-shaped support frame, and the locking square shaft moves through the driving sleeve and the connecting sleeve in turn and is inserted into the inside of the square hole.

[0007] Specifically, the bending parts of the Z-shaped support frame are fixedly connected with support frame bending section reinforcement ribs.

[0008] Specifically, two extension plates are symmetrically fixedly connected to the outer wall of the support plate away from one end of the Z-shaped support frame, and the bottoms of the two extension plates are fixedly connected to the first pins.

[0009] Specifically, a second rotating ring is sleeved on the outer wall of the connecting ring, a matching limiting ring groove is provided on the inner wall of the through groove corresponding to the second rotating ring, and the second rotating ring is rotatably connected inside the limiting ring groove.

[0010] Specifically, a rotation groove is opened at the top of the cone, and a first rotation ring is fixedly connected to the bottom of the outer accompanying rotation sleeve, and the first rotation ring is rotatably inserted into the interior of the rotation groove.

[0011] Beneficial effects of the present invention: The soil sampler for ecological environment monitoring described in the present invention has a simple structure and is easy to use. By improving the traditional single-form sampling tube into a dual-drive sampling assembly, the dual-drive sampling assembly is mainly divided into an internal pressure sampling sleeve and an outer accompanying rotating sleeve. The internal pressure sampling sleeve is threadedly connected to the internal threaded sleeve to drive its lifting and lowering, and the outer accompanying rotating sleeve is driven by the accompanying driving rod on the driving turntable to rotate, so that the sampling assembly can be inserted into the ground more smoothly and quickly for sampling. Since the outer accompanying rotating sleeve and the internal pressure sampling sleeve are independently separated and an internal threaded sleeve is also provided inside to separate them, the heat generated by friction during the rotation of the outer accompanying rotating sleeve will not be transferred to the internal pressure sampling sleeve in large quantities, thereby effectively preventing the melting of frozen soil inside the internal pressure sampling sleeve; In addition, since the internal threaded sleeve is located in the cavity between the external accompanying rotating sleeve and the internal pressure sampling sleeve, the external thread groove and the internal thread groove will not contact the soil during the sampling process, which can effectively prevent them from being worn, corroded, and obstructed from rotating due to soil adhesion, thereby increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 A schematic diagram of the structure of a soil sampler for ecological environment monitoring provided by the present invention Figure 1 ; Figure 2 A schematic diagram of the structure of a soil sampler for ecological environment monitoring provided by the present invention Figure 2 ; Figure 3 A schematic diagram of the structure of a soil sampler for ecological environment monitoring provided by the present invention when in use; Figure 4 A disassembled diagram of a dual-drive sampling component in a soil sampler for ecological environment monitoring provided by the present invention; Figure 5 A schematic diagram of the structure of a support plate in a soil sampler for ecological environment monitoring provided by the present invention; Figure 6 A cross-sectional view of a dual-drive sampling assembly in a soil sampler for ecological environment monitoring provided by the present invention; Figure 7 A schematic diagram of the structure of the external accompanying rotating sleeve in a soil sampler for ecological environment monitoring provided by the present invention; Figure 8 A schematic diagram of the structure of an internally threaded sleeve in a soil sampler for ecological environment monitoring provided by the present invention; Fig. 9 A schematic diagram of the structure of a driving turntable in a soil sampler for ecological environment monitoring provided by the present invention; Fig.10 A schematic diagram of the structure of an interpolation limit inner shaft in a soil sampler for ecological environment monitoring provided by the present invention; Fig.11 A schematic structural diagram of a mounting plate and a locking square shaft in a soil sampler for ecological environment monitoring provided by the present invention.

[0014] In the figure: 1. Support plate; 2. Z-shaped support frame; 3. Support frame bending section reinforcement rib; 4. Extension plate; 5. First pin; 6. Through slot; 7. Limit ring slot; 8. Speed ​​reducer motor; 9. Dual-drive sampling assembly; 91. Internal pressure sampling sleeve; 911. Cone; 912. External thread groove; 913. Internal limit stroke groove; 914. Rotation groove; 92. External accompanying rotating sleeve; 921. Spiral groove; 922. External drive stroke groove; 923. First rotating ring; 93. Internal thread sleeve; 931. Internal thread groove ; 932, external thread adapter tooth; 94, driving turntable; 941, adapter groove; 942, connecting sleeve; 943, accompanying driving rod; 944, connecting ring; 945, second rotating ring; 95, internal thread ring; 96, fixed limit inner shaft; 961, through hole; 962, limit rod; 963, second pin; 964, square hole; 101, first transmission wheel; 102, second transmission wheel; 103, transmission belt; 11, driving sleeve; 12, mounting plate; 13, locking square shaft; 14, locking pin. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] like Figure 1-Figure 11 As shown, a soil sampler for ecological environment monitoring described in the present invention comprises a support plate 1, a through slot 6 is formed through one end of the top of the support plate 1, a dual-drive sampling assembly 9 is arranged inside the through slot 6, and the dual-drive sampling assembly 9 comprises an internal pressure sampling sleeve 91, an external accompanying rotating sleeve 92, an internal thread sleeve 93, a driving turntable 94, an internal thread ring 95 and an inserted limit inner shaft 96; The internal pressure sampling sleeve 91 is a hollow cylindrical sleeve with an external thread groove 912 on the outer wall. The bottom of the internal pressure sampling sleeve 91 passes through the through groove 6 and is fixedly connected to the cone 911. A plurality of internal limit travel grooves 913 are evenly spaced on the inner wall of the internal pressure sampling sleeve 91. The outer accompanying rotating sleeve 92 is rotatably sleeved on the outer wall of the internal pressure sampling sleeve 91, a gap is provided between the outer accompanying rotating sleeve 92 and the internal pressure sampling sleeve 91, a spiral groove 921 arranged in an equidistant spiral is provided on the outer wall of the outer accompanying rotating sleeve 92, and a plurality of vertically arranged outer driving stroke grooves 922 are provided on the outer wall of the outer accompanying rotating sleeve 92 at equal intervals; The internal thread sleeve 93 is rotatably inserted in the gap between the external accompanying rotating sleeve 92 and the internal pressure sampling sleeve 91, and an internal thread groove 931 is provided on the inner cylinder wall of the internal thread sleeve 93. The internal thread sleeve 93 is threadedly connected with the external thread groove 912 on the internal pressure sampling sleeve 91 through the internal thread groove 931. A plurality of external thread adapter teeth 932 are fixedly connected at equal intervals on the top of the internal thread sleeve 93. The driving turntable 94 is arranged above the internal pressure sampling sleeve 91 and the outer accompanying rotating sleeve 92, and is coaxially arranged with the internal pressure sampling sleeve 91 and the outer accompanying rotating sleeve 92. The top of the driving turntable 94 is provided with a matching adapting groove 941 corresponding to the external thread adapting tooth 932. The bottom of the driving turntable 94 is fixedly connected with a connecting sleeve 942, and the other end of the connecting sleeve 942 extends to the inside of the internal pressure sampling sleeve 91. A plurality of accompanying driving rods 943 are fixedly embedded at equal intervals on the outer wall of the driving turntable 94. The accompanying driving rods 943 are movably inserted in the adjacent outer driving stroke grooves 922. The bottoms of the plurality of accompanying driving rods 943 are fixedly connected with a connecting ring 944, and the connecting ring 944 is rotatably inserted in the inside of the limiting ring groove 7. The external threaded adapting teeth 932 at the top of the internal threaded sleeve 93 move through the adapting grooves 941 in sequence and the threads are sleeved with an internal threaded ring 95 for limiting; The inserted and limited inner shaft 96 is movably inserted into the interior of the internal pressure sampling sleeve 91, a through hole 961 is opened at the top of the inserted and limited inner shaft 96, and the connecting sleeve 942 is rotatably inserted into the interior of the through hole 961, a square hole 964 is opened at the inner bottom of the through hole 961, and a plurality of limit rods 962 are fixedly connected at equal intervals on the outer wall of the inserted and limited inner shaft 96, and the limit rods 962 are slidably inserted into the interior of the internal limit stroke groove 913, and the bottom of the inserted and limited inner shaft 96 extends out of the internal pressure sampling sleeve 91 and is fixedly connected with a plurality of second pins 963 at equal intervals.

[0017] Specifically, the top of the support plate 1 is fixedly connected with a Z-shaped support frame 2, and a reduction motor 8 is installed on the top of the Z-shaped support frame 2. A slot is penetrated through the top of the end of the Z-shaped support frame 2 away from the reduction motor 8. The output end of the reduction motor 8 moves through the Z-shaped support frame 2 and is connected with a first transmission wheel 101. The first transmission wheel 101 is connected with a second transmission wheel 102 through a transmission belt 103. The bottom of the second transmission wheel 102 is fixedly connected with a driving sleeve 11, and the driving sleeve 11 is fixedly connected to the driving turntable 94. The second transmission wheel 102 is located directly below the slot, and the driving sleeve 11 is cocentrically arranged directly above the connecting sleeve 942. The reduction motor 8 includes a servo motor, a worm gear set and a mounting housing, the mounting housing is mounted on the top of the Z-shaped support frame 2 by bolts, the servo motor and the worm gear set are mounted inside the mounting housing, the worm in the worm gear set is fixedly connected to the output end of the servo motor, the worm wheel in the worm gear set is meshed with the worm, and a rotating shaft is fixedly plugged on the worm wheel, the end of the rotating shaft moves through the mounting housing and the Z-shaped support frame 2 in sequence and is fixedly connected to the first transmission wheel 101; A mounting plate 12 is provided above the Z-shaped support frame 2, and a locking square shaft 13 and a locking pin 14 are fixedly connected to the bottom of the mounting plate 12. The locking pin 14 is inserted into the hole on the top of the Z-shaped support frame 2, and the locking square shaft 13 moves through the driving sleeve 11 and the connecting sleeve 942 in turn and is inserted into the inside of the square hole 964. When the servo motor is electrically connected to an external power supply for driving, it can drive the driving turntable 94 to rotate at a uniform speed through the deceleration of the worm gear group, so that the reduction motor 8 can stably drive the device to start.

[0018] Specifically, the bending parts of the Z-shaped support frame 2 are fixedly connected with the support frame bending section reinforcement ribs 3, and the support frame bending section reinforcement ribs 3 can reinforce the Z-shaped support frame 2.

[0019] Specifically, two extension plates 4 are symmetrically fixedly connected to the outer wall of the support plate 1 away from one end of the Z-shaped support frame 2, and the bottoms of the two extension plates 4 are fixedly connected to the first pins 5. The extension plates 4 and the first pins 5 can limit the support plate 1.

[0020] Specifically, a second rotating ring 945 is sleeved on the outer wall of the connecting ring 944, a corresponding limiting ring groove 7 is opened on the inner wall of the through groove 6 corresponding to the second rotating ring 945, and the second rotating ring 945 is rotatably connected to the inside of the limiting ring groove 7. The setting of the second rotating ring 945 and the limiting ring groove 7 can effectively make the connecting ring 944 more stable when rotating inside the through groove 6.

[0021] Specifically, a rotating groove 914 is opened at the top of the cone 911, and a first rotating ring 923 is fixedly connected to the bottom of the outer accompanying rotating sleeve 92, and the first rotating ring 923 is rotatably inserted into the inside of the rotating groove 914. The setting of the first rotating ring 923 and the rotating groove 914 can effectively make the connection between the outer accompanying rotating sleeve 92 and the cone 911 more stable, and when the first rotating ring 923 is set to a structure with a thin top and a thick bottom, it can connect the outer accompanying rotating sleeve 92 with the internal pressure sampling sleeve 91, so that the internal pressure sampling sleeve 91 can drive the outer accompanying rotating sleeve 92 to move downward synchronously when moving downward.

[0022] In the initial state, the sampler is attached Figure 2 As shown, at this time, the outer accompanying rotating sleeve 92 is located above the supporting plate 1; When in use, the support plate 1 is placed on the ground, and the first and second pins 5 and 963 are inserted into the ground soil by hammering or hydraulic pressing equipment to press the support plate 1 downward, and the bottoms of the first and second pins 5 and 963 are both sharp. The first pin 5 can limit the support plate 1 when inserted into the soil, and the second pin 963 can limit the insertion limit inner shaft 96 when inserted into the soil. After the insertion limit inner shaft 96 is locked, when the internal threaded sleeve 93 drives the internal pressure sampling sleeve 91 to be pressed downward by the thread during rotation, the insertion limit inner shaft 96 can prevent the internal pressure sampling sleeve 91 from rotating and locking it, and the mounting plate 12 is limitedly installed on the top of the Z-shaped support frame 2 by the locking pin 14. When the locking square shaft 13 at the bottom of the mounting plate 12 is inserted into the inside of the square hole 964, the insertion limit inner shaft 96 can be further locked. After the installation is completed, the servo motor inside the reduction motor 8 is started again. The servo motor drives the worm in the worm gear group to drive the worm wheel to rotate. When the worm wheel rotates, it drives the rotating shaft to rotate and rotates through the transmission wheel group and the driving sleeve 11 to rotate the driving turntable 94. When the driving turntable 94 rotates, it can drive the internal threaded sleeve 93 to rotate through the clamped external thread adapter teeth 932 and can drive the external accompanying rotating sleeve 92 to rotate synchronously through the accompanying driving rod 943. When the internal threaded sleeve 93 rotates, it can drive the threaded internal pressure sampling sleeve 91 to be inserted vertically into the ground. At the same time, its external accompanying rotating sleeve 92 can not only move with the movement of the internal pressure sampling sleeve 91, but also rotate itself, so that its insertion process The outer accompanying rotating sleeve 92 and the internal pressure sampling sleeve 91 are separated and connected only by the first rotating ring 923, and the contact surface is small. The inner threaded sleeve 93 is also provided inside the outer accompanying rotating sleeve 92 for separation. When the outer accompanying rotating sleeve 92 and the internal pressure sampling sleeve 91 are synchronously moved downward, there is a cavity of a certain length between the outer accompanying rotating sleeve 92 and the internal pressure sampling sleeve 91. Compared with the integrated drill bit, the heat conduction effect is poor, so that the heat generated by the friction between the outer accompanying rotating sleeve 92 and the soil during the self-rotation process will not be transferred to the internal pressure sampling sleeve 91 in large quantities, thereby effectively preventing the frozen soil inside the internal pressure sampling sleeve 91 from melting. After drilling is completed and it needs to be taken out, the internal pressure sampling sleeve 91 has not completely touched the bottom (that is, when the motor is started, the internal pressure sampling sleeve 91 can still continue to move downward, and the internal pressure sampling sleeve 91 is not separated from the internal threaded sleeve 93). At this time, the motor is turned off to stop the device, and the mounting plate 12 installed on the top of the Z-shaped support frame 2 is removed, so that the locking square shaft 13 is pulled out from the square hole 964 inside the fixed limit inner shaft 96. At this time, the fixed limit inner shaft 96 loses the locking of the locking square shaft 13 and is only locked with the second pin 963 at the bottom. The internal pressure sampling sleeve 91 is connected to the frozen soil sampling core to be taken out, and then the motor is started. The motor drives the internal threaded sleeve 93 to rotate. When the internal threaded sleeve 93 rotates, it will drive the threaded internal pressure sampling sleeve 91 to rotate, and because the internal pressure sampling sleeve 91 loses the limit locking of the upper limit rod 962 on the outer wall of the fixed limit inner shaft 96, the internal pressure sampling sleeve 91 will rotate idly instead of continuing to move downward. When the internal pressure sampling sleeve 91 rotates idly, it will drive the frozen soil sampling core column inside it to rotate. Since the contact area between the internal pressure sampling sleeve 91 and the frozen soil sampling core is larger than the frozen soil sampling The contact area between the bottom of the sample core column and the frozen soil, and because an inner limit stroke groove 913 is opened on the inner cylinder wall of the internal pressure sampling sleeve 91, the outer wall of the frozen soil sampling core column will be snapped into the inside of the inner limit stroke groove 913, and as the internal pressure sampling sleeve 91 rotates, the bottom of the frozen soil sampling core will be broken and separated from the frozen soil. At this time, the rotation of the motor will be stopped and the mounting plate 12 will be reset, so that the locking square shaft 13 is inserted into the inside of the square hole 964 to limit and lock the inserted limit inner shaft 96, and then the motor is controlled to rotate in the reverse direction through the external PLC controller, and the motor When rotating in the reverse direction, the internal pressure sampling sleeve 91 is similarly pulled out of the excavated hole. After the extraction is completed, the equipment installed on the ground is removed. Since the bottom of the frozen soil sampling core column is broken and separated from the frozen soil, and there is a gap between the outer wall of the frozen soil sampling core column and the frozen soil hole drilled by the internal pressure sampling sleeve 91 and the external accompanying rotating sleeve 92, the frozen soil sampling core column in the hole is clamped and taken out by the core taking claw. It is not embedded in the internal pressure sampling sleeve 91 and taken out together, thereby avoiding the step of requiring external force to push out the frozen soil sampling core column after the traditional embedded synchronous removal.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. 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, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil sampler for ecological environment monitoring, comprising a support plate (1), a through slot (6) extending through one end of the top of the support plate (1), a dual-drive sampling assembly (9) being arranged inside the through slot (6), characterized in that: The dual-drive sampling assembly (9) comprises an internal pressure sampling sleeve (91), an external accompanying rotating sleeve (92), an internal thread sleeve (93), a driving rotating disk (94), an internal thread ring (95), and an inserted limiting inner shaft (96); The internal pressure sampling sleeve (91) is a hollow cylindrical sleeve with an external thread groove (912) formed on the outer cylinder wall; the bottom of the internal pressure sampling sleeve (91) passes through the through groove (6) and is fixedly connected to the cone cylinder (911); a plurality of internal limit stroke grooves (913) are formed at equal intervals on the inner cylinder wall of the internal pressure sampling sleeve (91); The outer accompanying rotating sleeve (92) is rotatably sleeved on the outer wall of the internal pressure sampling sleeve (91), a gap is provided between the outer accompanying rotating sleeve (92) and the internal pressure sampling sleeve (91), a spiral groove (921) arranged in an equidistant spiral is provided on the outer wall of the outer accompanying rotating sleeve (92), and a plurality of vertically arranged external driving stroke grooves (922) are provided on the outer wall of the outer accompanying rotating sleeve (92) at equal intervals; The internal thread sleeve (93) is rotatably inserted into the gap between the outer accompanying rotating sleeve (92) and the internal pressure sampling sleeve (91), and an internal thread groove (931) is provided on the inner cylinder wall of the internal thread sleeve (93). The internal thread sleeve (93) is threadedly connected to the external thread groove (912) on the internal pressure sampling sleeve (91) via the internal thread groove (931), and a plurality of external thread adapter teeth (932) are fixedly connected at equal intervals to the top of the internal thread sleeve (93); The driving turntable (94) is arranged above the internal pressure sampling sleeve (91) and the outer accompanying rotating sleeve (92), and is coaxially arranged with the internal pressure sampling sleeve (91) and the outer accompanying rotating sleeve (92); a matching adapting groove (941) is provided at the top of the driving turntable (94) corresponding to the external thread adapting tooth (932); a connecting sleeve (942) is fixedly connected to the bottom of the driving turntable (94), and the other end of the connecting sleeve (942) extends to the inside of the internal pressure sampling sleeve (91); a plurality of accompanying driving rods (943) are fixedly embedded at equal intervals on the outer wall of the driving turntable (94); the accompanying driving rods (943) are movably inserted into the inside of adjacent external driving stroke grooves (922); the bottoms of the plurality of accompanying driving rods (943) are fixedly connected to a connecting ring (944) together, and the connecting ring (944) is rotatably inserted into the inside of the limiting ring groove (7); The external threaded adapting teeth (932) at the top of the internal threaded sleeve (93) move through the adapting grooves (941) in sequence and the threaded sleeve is connected with an internal threaded ring (95) for limiting position; The inserted and limited inner shaft (96) is movably plugged into the interior of the internal pressure sampling sleeve (91); a through hole (961) is provided at the top of the inserted and limited inner shaft (96), and the connecting sleeve (942) is rotatably plugged into the interior of the through hole (961); a square hole (964) is provided at the inner bottom of the through hole (961); a plurality of limit rods (962) are fixedly connected at equal intervals to the outer wall of the inserted and limited inner shaft (96); the limit rods (962) are slidably plugged into the interior of the internal limit stroke groove (913); the bottom of the inserted and limited inner shaft (96) extends out of the internal pressure sampling sleeve (91) and is fixedly connected to a plurality of second pins (963) at equal intervals.

2. A soil sampler for ecological environment monitoring according to claim 1, characterized in that: The top of the support plate (1) is fixedly connected to a Z-shaped support frame (2), a reduction motor (8) is installed on the top of the Z-shaped support frame (2), a slot is penetrated through the top of the end of the Z-shaped support frame (2) away from the reduction motor (8), the output end of the reduction motor (8) movably passes through the Z-shaped support frame (2) and is connected to a first transmission wheel (101), the first transmission wheel (101) is connected to a second transmission wheel (102) through a transmission belt (103), the bottom of the second transmission wheel (102) is fixedly connected to a driving sleeve (11), the driving sleeve (11) is fixedly connected to the driving turntable (94), the second transmission wheel (102) is located directly below the slot, and the driving sleeve (11) is coaxially arranged directly above the connecting sleeve (942); The reduction motor (8) comprises a servo motor, a worm gear set and a mounting housing, the mounting housing being mounted on the top of the Z-shaped support frame (2) by means of bolts, the servo motor and the worm gear set being mounted inside the mounting housing, the worm in the worm gear set being fixedly connected to the output end of the servo motor, the worm wheel in the worm gear set being meshingly connected to the worm, and a rotating shaft being fixedly plugged into the worm wheel, the end of the rotating shaft being movable through the mounting housing and the Z-shaped support frame (2) in sequence and being fixedly connected to the first transmission wheel (101); A mounting plate (12) is arranged above the Z-shaped support frame (2), and a locking square shaft (13) and a locking pin (14) are fixedly connected to the bottom of the mounting plate (12). The locking pin (14) is inserted into a hole at the top of the Z-shaped support frame (2), and the locking square shaft (13) moves through the driving sleeve (11) and the connecting sleeve (942) in sequence and is inserted into the interior of the square hole (964).

3. A soil sampler for ecological environment monitoring according to claim 2, characterized in that: The bending parts of the Z-shaped support frame (2) are all fixedly connected with support frame bending section reinforcement ribs (3).

4. A soil sampler for ecological environment monitoring according to claim 2, characterized in that: Two extension plates (4) are symmetrically and fixedly connected to the outer wall of the support plate (1) at one end away from the Z-shaped support frame (2), and the bottoms of the two extension plates (4) are both fixedly connected to a first inserting pin (5).

5. The soil sampler for ecological environment monitoring according to claim 1, characterized in that: A second rotating ring (945) is sleeved on the outer wall of the connecting ring (944), a matching limiting ring groove (7) is provided on the inner wall of the through groove (6) corresponding to the second rotating ring (945), and the second rotating ring (945) is rotatably connected inside the limiting ring groove (7).

6. The soil sampler for ecological environment monitoring according to claim 1, characterized in that: The top of the cone (911) is provided with a rotation groove (914), the bottom of the outer accompanying rotation sleeve (92) is fixedly connected with a first rotation ring (923), and the first rotation ring (923) is rotationally inserted into the interior of the rotation groove (914).

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