CN219245045U

CN219245045U - Sampling device for soil

Info

Publication number: CN219245045U
Application number: CN202223467252.4U
Authority: CN
Inventors: 杨雄; 陈甜; 龙现福; 罗先杰; 杨宏泽; 肖瑶瑶; 潘正
Original assignee: Guizhou Zhongce Testing Technology Co ltd
Current assignee: Guizhou Zhongce Testing Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-23
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a sampling device for soil, which comprises a supporting seat, a supporting frame, a driving mechanism and a sampling mechanism, wherein the supporting frame is arranged on the supporting seat, positioning inserting rods are inserted at two sides of the top of the supporting seat, a guide cylinder is fixedly arranged at the center of the top of the supporting seat, a guide hole penetrating through the supporting seat is formed in the guide cylinder, and the sampling mechanism can be detachably arranged in the guide cylinder and can be driven to move up and down in the guide cylinder under the action of the driving mechanism. By adopting the sampling device, the depth of the sampling mechanism inserted into the soil can be adjusted by utilizing the driving mechanism, the soil with corresponding depth is sampled, the mixing of the soil with different depths is avoided, the accuracy of the later detection is effectively ensured, the sampling cost is effectively reduced, the working efficiency is improved, the whole structure is simple, the operation is convenient, the practicability of the device is ensured, and the device is suitable for popularization and application.

Description

Sampling device for soil

Technical Field

The utility model relates to the technical field of soil sampling, in particular to a sampling device for soil.

Background

Soil environment monitoring refers to determining environmental quality (or pollution degree) and its change trend by measuring representative values of factors affecting soil environment quality, and generally comprises technical contents such as point distribution sampling, sample preparation, analysis methods, result characterization, data statistics, quality evaluation and the like. In the process of environmental monitoring of soil, a soil sampling device is generally utilized to collect soil samples of a farmland or barren surface layer, and then the collected samples are detected according to corresponding requirements. For example, in the agricultural production process, it is necessary to detect the contents of fertility, organic substances, moisture and other substances contained in the soil so as to determine relevant factors affecting the agricultural production; in the process of evaluating environmental impact, the content of different heavy metals in soil needs to be determined so as to provide reference data for evaluating environmental quality.

When collecting soil sample, often use soil sampling device, traditional sampling device mainly uses primitive instrument such as spade, and not only sample rate is slow, still has the condition that influences soil survey effect. At present, sampling devices except shovels are also arranged on the market, so that shallow soil can only be collected generally, and the collected soil is also provided with surface soil, so that inaccurate research data is caused.

Through retrieving, the chinese patent of application publication No. CN115290383 a discloses a soil sampling device is detected to environmental protection engineering, which comprises a base, the outer wall of base is provided with the stand, and the tip of stand is provided with the mounting panel, the outer wall slip of stand is provided with the lifter plate, the outer wall of lifter plate runs through fixedly and is provided with the sampling stake, the mounting groove has been seted up to the tip of sampling stake, and the activity is provided with the broken cone in the mounting groove, the other end of sampling stake runs through and is provided with the screw rod, and rotates between the tip of screw rod and the outer wall of broken cone to be connected, the fixed slot has been seted up to the both sides inner wall of mounting groove, and is provided with the baffle in the fixed slot, the inner wall of fixed slot is provided with the fixed pipe, and the fixed pipe grafting sets up in the baffle, gap department between baffle and the fixed pipe is provided with the sealing washer. According to the disclosure, although the soil with a fixed depth can be accurately obtained and is not mixed with the soil with other depths, the whole structure is relatively complex, and meanwhile, the soil is driven to run by a plurality of driving pieces, so that the sampling cost is high in the application process. Therefore, in order to reduce the sampling cost and improve the working efficiency, the soil with the corresponding depth can be sampled, and the sampling device with simple structure and convenient operation is provided.

Disclosure of Invention

The utility model aims at solving the problems in the background art, and provides a sampling device which is simple in structure and convenient to operate, and by using the sampling device, soil with corresponding depth can be sampled, mixing of soil with different depths is avoided, and the accuracy of later detection is effectively ensured, in particular to a sampling device for soil.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a sampling device for soil, includes supporting seat, support frame, actuating mechanism and sampling mechanism, the supporting frame is arranged on the supporting seat the top both sides of supporting seat peg graft and have the location inserted bar, and in the fixed guide cylinder that is equipped with in top center of supporting seat be equipped with the guiding hole that runs through the supporting seat in the guide cylinder, sampling mechanism can dismantle the setting in the guide cylinder to under actuating mechanism's effect, can drive sampling mechanism reciprocates in the guide cylinder; the sampling mechanism comprises a supporting guide rod, a supporting plate, a sampling guide rod and a sampling drill probe, wherein the supporting guide rod is arranged in a guide cylinder and is in sliding connection with the guide cylinder through a guide hole, a guide threaded hole is formed in the supporting guide rod, the lower end of the sampling guide rod is in threaded connection with the inside of the supporting guide rod through the guide threaded hole, the upper end of the sampling guide rod penetrates through the supporting frame and extends to the outer side of the supporting frame, a thread groove is formed in the bottom end of the sampling guide rod, a sampling channel communicated with the guide hole is formed in the bottom of the supporting guide rod, a rubber pad is arranged at the intersection of the sampling channel and the guide hole, and a detachable sampling drill probe is in threaded connection with the inside of the thread groove; the supporting plate is fixed on the lateral surface of the supporting guide rod in a horizontal state, the sampling mechanism is rotationally connected with a driving mechanism arranged on the supporting frame through the supporting plate, the supporting guide rod is driven to move up and down in the guide cylinder through the supporting plate under the action of the driving mechanism, and an operating rod is further arranged on the outer surface of the top of the sampling guide rod.

Further, the utility model relates to a sampling device for soil, wherein the driving mechanism comprises an operation rocking handle, a transmission shaft, a transmission main gear, a transmission driven gear, a transmission threaded shaft and a transmission bearing, wherein a plurality of transmission bearings are arranged, the transmission shaft is rotationally connected with a support frame through the transmission bearing, the end part of the transmission shaft extends to the outer side of the support frame, a through hole corresponding to the operation rocking handle is arranged at one end of the transmission shaft, the operation rocking handle is detachably connected with the transmission shaft through the through hole, and two transmission main gears are arranged in the transmission shaft; two support connecting blocks are arranged in the support frame, and transmission bearings are respectively arranged in the two support connecting blocks; the two transmission threaded shafts are respectively a transmission left threaded shaft and a transmission right threaded shaft, the transmission left threaded shaft and the transmission right threaded shaft are distributed on two sides of the guide cylinder, the lower ends of the transmission left threaded shafts and the transmission right threaded shafts are arranged on the supporting seat through transmission bearings, the upper ends of the transmission left threaded shafts and the transmission right threaded shafts sequentially penetrate through the supporting plates and the transmission bearings in the supporting connecting blocks and extend to the upper parts of the supporting connecting blocks, transmission threaded holes matched with the transmission threaded shafts are formed in the supporting plates, the supporting plates are in rotary connection with the transmission threaded shafts through the transmission threaded holes, and the transmission threaded shafts are in rotary connection with the supporting connecting blocks through the transmission bearings; the top ends of the left transmission threaded shaft and the right transmission threaded shaft are respectively provided with a transmission driven gear meshed with the transmission main gear, and the transmission shaft and the transmission threaded shaft are in transmission connection with the transmission driven gear through the transmission main gear.

Further, according to the soil sampling device, the transmission main gear is arranged in a bevel gear structure, and the transmission auxiliary gear is arranged in a bevel gear structure corresponding to the bevel gear structure; under the action of external force, the transmission shaft is driven to rotate by the operation rocking handle, the transmission main gear is driven to rotate in the rotation process of the transmission shaft, the transmission driven gear is driven to synchronously rotate by the transmission main gear, the transmission driven gear is driven to synchronously rotate in the transportation process of the transmission driven gear, the transmission threaded shaft is driven to synchronously rotate in the rotation process of the transmission threaded shaft, the supporting guide rod is driven to vertically move in the guide cylinder through the supporting plate, and the height adjustment of the sampling guide rod which is in threaded connection with the supporting guide rod is realized.

Furthermore, according to the soil sampling device, the supporting seat is of a square structure with a concave accommodating space, four positioning inserting rods are arranged, and the four positioning inserting rods are symmetrically distributed on two sides of the top of the supporting seat.

Furthermore, the two operating rods are symmetrically distributed on the outer surface of the top of the sampling guide rod, and the outer surface of the operating rod is also provided with anti-skid patterns.

Further, according to the sampling device for soil, the bottom of the supporting guide rod is provided with the conical structure, the sampling channel is axially arranged at the bottom of the supporting guide rod, and the structure of the sampling channel is matched with the appearance structure of the sampling drill probe.

Further, according to the sampling device for soil, the supporting frame is of a frame structure formed by two vertically arranged supporting and positioning plates and one transversely arranged supporting and positioning plate, through holes corresponding to the sampling guide rods are formed in the supporting and positioning plates, the lower ends of the sampling guide rods penetrate through the through holes in the supporting and positioning plates and are in threaded connection with the guiding threaded holes in the supporting and positioning rods, the upper ends of the sampling guide rods are located on the outer side of the supporting frame, and measuring scales are arranged on the supporting and positioning plates along the longitudinal direction of the supporting and positioning plates.

According to the soil sampling device, the arranged driving mechanism is utilized to drive the sampling mechanism to move up and down in the guide cylinder, namely, the motion state of the supporting guide rod can be driven by manually rotating the operating rocking handle, so that the soil is deep into the position where the soil needs to be sampled, meanwhile, the motion state of the sampling guide rod in the supporting guide rod can be driven by manually rotating the operating rod, and finally, the soil with the corresponding depth can be sampled through the sampling drill probe.

Therefore, the sampling device provided by the utility model has good stability, the depth of the sampling mechanism inserted into the soil can be adjusted by using the driving mechanism under the action of external force, the soil with corresponding depth is sampled, the mixing of the soil with different depths is avoided, the accuracy of the later detection is effectively ensured, the sampling cost can be effectively reduced, the working efficiency can be improved, the whole structure is simple, the operation is convenient, the practicability of the device is ensured, and the device is suitable for popularization and application.

Drawings

The utility model is described in further detail below with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of a second embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a third embodiment of the present utility model;

fig. 4 is an enlarged schematic view of a part of the structure of the sampling mechanism according to the present utility model.

The figure shows: 1-supporting seat, 11-positioning inserted link, 12-guiding tube, 2-supporting frame, 21-supporting connecting block, 3-driving mechanism, 31-operating rocking handle, 32-driving shaft, 33-driving main gear, 34-driving driven gear, 35-driving screw shaft, 36-driving bearing, 4-sampling mechanism, 41-supporting guiding rod, 411-sampling channel, 412-rubber pad, 42-supporting plate, 43-sampling guiding rod, 431-screw groove, 44-sampling drill probe and 45-operating rod.

Detailed Description

As shown in fig. 1 to 4, the sampling device for soil according to the present utility model comprises a supporting seat 1, a supporting frame 2, a driving mechanism 3 and a sampling mechanism 4, wherein the supporting frame 2 is disposed on the supporting seat 1, positioning inserting rods 11 are inserted at two sides of the top of the supporting seat 1, a guiding cylinder 12 is fixedly disposed at the center of the top of the supporting seat 1, a guiding hole penetrating through the supporting seat 1 is disposed in the guiding cylinder 12, and the sampling mechanism 4 is detachably disposed in the guiding cylinder 12 and can drive the sampling mechanism 4 to move up and down in the guiding cylinder 12 under the action of the driving mechanism 3; the sampling mechanism 4 comprises a supporting guide rod 41, a supporting plate 42, a sampling guide rod 43 and a sampling drill probe 44, wherein the supporting guide rod 41 is arranged in the guide cylinder 12 and is in sliding connection with the guide cylinder 12 through a guide hole, a guide threaded hole is formed in the supporting guide rod 41, the lower end of the sampling guide rod 43 is in threaded connection with the inside of the supporting guide rod 41 through the guide threaded hole, the upper end of the sampling guide rod 43 passes through the supporting frame 2 and extends to the outer side of the supporting frame 2, a threaded groove 431 is formed in the bottom end of the sampling guide rod 43, a sampling channel 411 communicated with the guide hole is formed in the bottom of the supporting guide rod 41, a rubber pad 412 is arranged at the intersection of the sampling channel 411 and the guide hole, and a detachable sampling drill probe 44 is in threaded connection with the inside of the threaded groove 431; the supporting plate 42 is fixed on the lateral surface of the supporting guide rod 41 in a horizontal state, the sampling mechanism 4 is rotationally connected with the driving mechanism 3 arranged on the supporting frame 2 through the supporting plate 42, the supporting guide rod 41 is driven to move up and down in the guide cylinder 12 through the supporting plate 42 under the action of the driving mechanism 3, two operating rods 45 are further arranged on the outer surface of the top of the sampling guide rod 43, the two operating rods 45 are symmetrically distributed on the outer surface of the top of the sampling guide rod 43, and anti-skid patterns are further arranged on the outer surface of the operating rod 45.

In a specific manufacturing process, the driving mechanism 3 comprises an operation rocking handle 31, a transmission shaft 32, a transmission main gear 33, a transmission driven gear 34, a transmission threaded shaft 35 and a transmission bearing 36, wherein a plurality of transmission bearings 36 are arranged, the transmission shaft 32 is rotatably connected with the support frame 2 through the transmission bearing 36, the end part of the transmission shaft 32 extends to the outer side of the support frame 2, a through hole corresponding to the operation rocking handle 31 is arranged at one end of the transmission shaft 32, the operation rocking handle 31 is detachably connected with the transmission shaft 32 through the through hole, and two transmission main gears 33 are arranged in the transmission shaft 32; two support connection blocks 21 are arranged in the support frame 2, and transmission bearings 36 are respectively arranged in the two support connection blocks 21; the two transmission threaded shafts 35 are respectively a transmission left threaded shaft and a transmission right threaded shaft, the transmission left threaded shaft and the transmission right threaded shaft are distributed on two sides of the guide cylinder 12, the lower ends of the transmission left threaded shaft and the transmission right threaded shaft are arranged on the support seat 1 through transmission bearings 36, the upper ends of the transmission left threaded shaft and the transmission right threaded shaft sequentially penetrate through the support plates 42 and the transmission bearings 36 in the support connecting blocks 21 and extend to the upper parts of the support connecting blocks 21, transmission threaded holes matched with the transmission threaded shafts 35 are formed in the support plates 42, the support plates 42 are in rotary connection with the transmission threaded shafts 35 through the transmission threaded holes, and the transmission threaded shafts 35 are in rotary connection with the support connecting blocks 21 through the transmission bearings 36; the top ends of the left transmission threaded shaft and the right transmission threaded shaft are respectively provided with a transmission driven gear 34 meshed with a transmission main gear 33, and the transmission shaft 32 and the transmission threaded shaft 35 are in transmission connection with the transmission driven gear 34 through the transmission main gear 33. Further, in order to achieve conversion of a horizontal direction motion into a vertical direction motion, the transmission master gear 33 is provided in a bevel gear structure, and the transmission slave gear 34 is provided in a bevel gear structure corresponding to the bevel gear structure; under the action of external force, the operation rocking handle 31 drives the transmission shaft 32 to rotate, in the rotation process of the transmission shaft 32, the transmission main gear 33 is driven to rotate, the transmission driven gear 34 is driven to synchronously rotate through the transmission main gear 33, in the transfer process of the transmission driven gear 34, the transmission threaded shaft 35 is driven to synchronously rotate, in the rotation process of the transmission threaded shaft 35, the support guide rod 41 is driven to move up and down in the guide cylinder 12 through the support plate 42, and the height adjustment of the sampling guide rod 43 in threaded connection with the support guide rod 41 is realized.

The bottom of the supporting guide rod 41 is provided with a conical structure, the sampling channel 411 is axially arranged at the bottom of the supporting guide rod 41, and the structure of the sampling channel 411 is matched with the appearance structure of the sampling drill probe 44.

The support frame 2 is a frame structure formed by two vertically arranged support positioning plates and a transversely arranged support connecting plate, through holes corresponding to the sampling guide rods 43 are arranged in the support connecting plate, the lower ends of the sampling guide rods 43 penetrate through the through holes in the support connecting plate and are in threaded connection with guide threaded holes in the support guide rods 41, the upper ends of the sampling guide rods are positioned on the outer side of the support frame 2, and measuring scales are arranged on the support positioning plates along the longitudinal direction of the support positioning plates. The supporting frame 2 forms a frame structure through a supporting positioning plate and a supporting connecting plate, so that the stability of the supporting frame can be improved, and the descending distance of the supporting plate 42 can be known by utilizing a measuring scale longitudinally arranged, so that the moving distance of the supporting guide rod 41 in the guide cylinder 12 is determined.

The working principle of the sampling device for soil provided by the utility model is as follows: when in use, the supporting seat 1 is fixed on the ground to be sampled through the four configured positioning inserting rods 11, then the sampling drill probe 44 is screwed into the threaded groove 431 in the sampling guide rod 43, the sampling guide rod 43 with the sampling drill probe 44 is inserted into the supporting guide rod 41, and the operating rod 45 at the upper end of the sampling guide rod 43 is rotated in a manual mode, so that the bottom of the sampling drill probe 44 and the bottom of the supporting guide rod 41 are in a butt joint, namely in the same horizontal plane; then the rocking handle 31 is rotated and operated by manpower, under the action of the transmission main gear 33 and the transmission auxiliary gear 34, the transmission threaded shaft 35 is driven to rotate, in the process of rotating the transmission threaded shaft 35, the supporting guide rod 41 is driven to move downwards in the guide cylinder 12 by the supporting plate 42, so that the supporting guide rod 41 is downwards inserted into soil, as the measuring scale is longitudinally arranged on the supporting and positioning plate, the descending distance of the supporting plate 42 can be known by utilizing the measuring scale longitudinally arranged, so that the moving distance of the supporting guide rod 41 in the guide cylinder 12 is determined, and when the supporting guide rod 41 is downwards inserted to the corresponding depth, the rotation operation of the rocking handle 31 can be stopped; finally, the operating rod 45 at the upper end of the sampling guide rod 43 is rotated in a manual mode, so that the sampling drill probe 44 continuously moves downwards, the sampling drill probe 44 is driven to sample in the rotating process, after the sampling is finished, the operating rod 45 at the upper end of the sampling guide rod 43 is rotated in a manual mode, the sampling drill probe 44 moves upwards, and the sampling guide rod 43 is screwed out of the supporting guide rod 41. Or the sampling drill probe 44 is replaced again, the sampling guide rod 43 is screwed into the supporting guide rod 41, and sampling is performed again, so that multiple groups of samples can be obtained, and the accuracy of later detection can be effectively ensured.

Therefore, the sampling device of the utility model is adopted, the driving mechanism 3 is arranged to drive the sampling mechanism 4 to move up and down in the guide cylinder 12, namely, the rocking handle 31 is rotated by manpower to drive the movement state of the supporting guide rod 41 to enable the sampling mechanism to go deep into the soil to be sampled, meanwhile, the operation rod 45 is rotated by manpower to drive the movement state of the sampling guide rod 43 in the supporting guide rod 41, and finally, the sampling of the soil with corresponding depth can be completed through the sampling drill probe 44.

In summary, the sampling device provided by the utility model has good stability, the depth of the sampling mechanism 4 inserted into the soil can be adjusted by using the driving mechanism 3 under the action of external force, the soil with corresponding depth can be sampled, the mixing of the soil with different depths is avoided, the accuracy of the later detection is effectively ensured, the sampling cost is effectively reduced, the working efficiency is also improved, the whole structure is simple, the operation is convenient, the practicability of the device is ensured, and the device is suitable for popularization and application.

The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific embodiments, but the above description is only a preferred embodiment of the present utility model, and is not limited to the present utility model, and any minor modifications, equivalent substitutions and improvements made according to the technical solutions of the present utility model should be included in the protection scope of the technical solutions of the present utility model.

Claims

1. A sampling device for soil, characterized in that: the sampling device comprises a supporting seat (1), a supporting frame (2), a driving mechanism (3) and a sampling mechanism (4), wherein the supporting frame (2) is arranged on the supporting seat (1), positioning inserting rods (11) are inserted into two sides of the top of the supporting seat (1), a guide cylinder (12) is fixedly arranged in the center of the top of the supporting seat (1), a guide hole penetrating through the supporting seat (1) is formed in the guide cylinder (12), and the sampling mechanism (4) is detachably arranged in the guide cylinder (12) and can drive the sampling mechanism (4) to move up and down in the guide cylinder (12) under the action of the driving mechanism (3); the sampling mechanism (4) comprises a supporting guide rod (41), a supporting plate (42), a sampling guide rod (43) and a sampling drill probe (44), wherein the supporting guide rod (41) is arranged in a guide cylinder (12) and is in sliding connection with the guide cylinder (12) through a guide hole, a guide threaded hole is formed in the supporting guide rod (41), the lower end of the sampling guide rod (43) is in threaded connection with the inside of the supporting guide rod (41) through the guide threaded hole, the upper end of the sampling guide rod passes through a supporting frame (2) and extends to the outer side of the supporting frame (2), a threaded groove (431) is formed in the bottom end of the sampling guide rod (43), a sampling channel (411) communicated with the guide hole is formed in the bottom of the supporting guide rod (41), a rubber pad (412) is arranged at the intersection of the sampling channel (411) and the guide hole, and the detachable sampling drill probe (44) is in threaded connection with the inside of the threaded groove (431). The support plate (42) is fixed on the lateral surface of the support guide rod (41) in a horizontal state, the sampling mechanism (4) is rotationally connected with the driving mechanism (3) arranged on the support frame (2) through the support plate (42), the support guide rod (41) is driven to move up and down in the guide cylinder (12) through the support plate (42) under the action of the driving mechanism (3), and an operating rod (45) is further arranged on the outer surface of the top of the sampling guide rod (43).

2. A sampling device for soil according to claim 1, wherein: the driving mechanism (3) comprises an operation rocking handle (31), a transmission shaft (32), a transmission main gear (33), a transmission driven gear (34), a transmission threaded shaft (35) and a transmission bearing (36), wherein a plurality of transmission bearings (36) are arranged, the transmission shaft (32) is rotationally connected with the support frame (2) through the transmission bearing (36), the end part of the transmission shaft extends to the outer side of the support frame (2), a through hole corresponding to the operation rocking handle (31) is arranged at one end of the transmission shaft (32), the operation rocking handle (31) is detachably connected with the transmission shaft (32) through the through hole, and two transmission main gears (33) are arranged in the transmission shaft (32); two support connecting blocks (21) are arranged in the support frame (2), and transmission bearings (36) are respectively arranged in the two support connecting blocks (21); the two transmission threaded shafts (35) are respectively a transmission left threaded shaft and a transmission right threaded shaft, the transmission left threaded shaft and the transmission right threaded shaft are distributed on two sides of the guide cylinder (12), the lower ends of the transmission left threaded shafts and the transmission right threaded shafts are arranged on the supporting seat (1) through transmission bearings (36), the upper ends of the transmission threaded shafts sequentially penetrate through the supporting plates (42) and the transmission bearings (36) in the supporting connecting blocks (21) and extend to the upper parts of the supporting connecting blocks (21), transmission threaded holes matched with the transmission threaded shafts (35) are formed in the supporting plates (42), the supporting plates (42) are in rotary connection with the transmission threaded shafts (35) through the transmission threaded holes, and the transmission threaded shafts (35) are in rotary connection with the supporting connecting blocks (21) through the transmission bearings (36); the top ends of the transmission left threaded shaft and the transmission right threaded shaft are respectively provided with a transmission slave gear (34) meshed with a transmission master gear (33), and the transmission shaft (32) and the transmission threaded shaft (35) are in transmission connection with the transmission slave gear (34) through the transmission master gear (33).

3. A sampling device for soil according to claim 2, wherein: the transmission main gear (33) is arranged in a bevel gear structure, and the transmission auxiliary gear (34) is arranged in a bevel gear structure corresponding to the bevel gear structure; under the action of external force, the transmission shaft (32) is driven to rotate through the operation rocking handle (31), the transmission main gear (33) is driven to rotate in the rotation process of the transmission shaft (32), the transmission driven gear (34) is driven to synchronously rotate through the transmission main gear (33), the transmission driven gear (34) is driven to synchronously rotate in the transportation process of the transmission driven gear (34), the transmission threaded shaft (35) is driven to vertically move in the guide cylinder (12) through the support plate (42), and the height adjustment of the sampling guide rod (43) which is in threaded connection with the support guide rod (41) is realized.

4. A sampling device for soil according to claim 1, wherein: the supporting seat (1) is of a square structure with a concave accommodating space, the four positioning inserting rods (11) are arranged, and the four positioning inserting rods (11) are symmetrically distributed on two sides of the top of the supporting seat (1).

5. A sampling device for soil according to claim 1, wherein: the two operation rods (45) are symmetrically distributed on the outer surface of the top of the sampling guide rod (43), and anti-skidding patterns are further arranged on the outer surface of the operation rods (45).

6. A sampling device for soil according to claim 1, wherein: the bottom of support guide bar (41) sets up to be the toper structure, sampling channel (411) are along its axial setting in the bottom of support guide bar (41), the structure of sampling channel (411) and the appearance structure looks adaptation of sampling drill probe (44).

7. A sampling device for soil according to claim 1, wherein: the support frame (2) comprises a frame structure by two vertically arranged support positioning plates and a transversely arranged support connecting plate, through holes corresponding to the sampling guide rods (43) are formed in the support connecting plate, the lower ends of the sampling guide rods (43) penetrate through the through holes in the support connecting plate and are in threaded connection with guide threaded holes in the support guide rods (41), the upper ends of the sampling guide rods are located on the outer side of the support frame (2), and measuring scales are longitudinally arranged on the support positioning plates.