Portable soil sampling device

Abstract

The present invention discloses a portable soil sampling mechanism, including a bottom plate, a placement box and a support column, wherein the bottom of the bottom plate is fixedly connected with a universal wheel, the top of the bottom plate is provided with a slot, and a supporting telescopic rod is movably installed on the top of the slot, and a limiting hole is provided on the side of the supporting telescopic rod, and the inner wall of the limiting hole is movably connected with a limiting block. The portable soil sampling mechanism, through the provided limiting spring, L-shaped plate and special-shaped block, enables the first drill bit to be directly assembled to the side of the stabilizing block through the special-shaped rod, and through the provided supporting telescopic rod, supporting telescopic plate and special-shaped telescopic plate, the overall area of ​​the device can be greatly reduced when it is carried and transported, so that the collector does not need to use large-scale transportation equipment to transport the device, which greatly reduces the user's use cost to a certain extent, and when the internal parts of the device are damaged, the collector can disassemble and repair the special parts, thereby improving the collector's maintenance efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling devices, in particular to a portable soil sampling mechanism. Background Art

[0002] A soil sampling device refers to a tool used to obtain soil samples. Commonly used ones include soil drills, spades and shovels. The soil drill consists of a drill bit and a handle made of hard material (steel or hard plastic). The drill bit is often spiral or cylindrical. The top of the spiral drill bit is a pair of sharp blades that can be rotated to cut into the soil. Immediately following the blade is an expanded soil cavity. As the handle rotates, it drills down into the soil surface, and the soil sample of the soil layer to be collected can be introduced into the cavity. The diameter of the cylindrical soil drill is slightly different at both ends. The end connected to the handle is slightly larger than the end in contact with the soil, ensuring that the soil that has entered the cylinder when the soil drill is taking soil will not be scattered due to the movement of the soil drill. The handle of the soil drill is engraved with scales to control the sampling depth. After the soil drill is raised from the soil surface, the soil sample can be taken out from it, and soil samples of different depths can continue to be collected in the original sampling hole. However, the existing soil sampling devices still have certain defects, such as:

[0003] 1. The existing soil sampling device is generally a large whole that is not convenient for collectors to carry. When collectors need to go to sparsely populated areas to take soil samples, they often need to rent a large vehicle to transport the soil sampling device, which greatly increases the user's cost;

[0004] 2. Existing soil sampling devices generally do not carry spare drill bits. When the drill bit is damaged while the collector is collecting soil samples, the drill bit cannot be replaced and repaired in time, which easily wastes the collector's sampling time, and thus there are certain usage defects;

[0005] 3. Existing soil sampling devices can generally only carry a single type of drill bit. When encountering soils of different geology, the drill bit generally needs to be replaced. Since the replacement of the drill bit is inconvenient, the collector has to increase the number of steps for soil sampling, which wastes the collector's sampling time and brings inconvenience to the user's operation;

[0006] 4. Existing soil sampling devices generally have poor protection and are not easy to shrink and assemble. When collectors go to the mountains and forests to sample soil, things on the mountains or trees may fall down and cause great damage to the equipment, which increases the risk of use for users and wastes the sampling time of collectors.

[0007] In view of the above problems, it is urgent to carry out innovative design based on the original soil sampling device structure. Summary of the invention

[0008] The purpose of the present invention is to provide a portable soil sampling mechanism to solve the problem that generally only a single type of drill bit can be carried in the above-mentioned background technology. When encountering soil of different geological conditions, the drill bit generally needs to be replaced. Since the replacement of the drill bit is relatively inconvenient, the collector's soil sampling steps increase, which wastes the collector's sampling time. Generally, spare drill bits are not carried. When the collector is collecting soil samples and the drill bit is damaged, the drill bit cannot be replaced and repaired in time, thereby wasting the collector's sampling time. Generally, it is not convenient for the collector to carry it as a whole. When the collector needs to go to sparsely populated areas to sample soil, it is often necessary to rent a large vehicle to transport the soil sampling device, thereby greatly increasing the user's use cost. Generally, the protection is poor. When the collector goes to the mountains and forests to sample the soil, things on the mountains or trees may fall down and cause great damage to the equipment, which increases the user's use risk and wastes the collector's sampling time.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a portable soil sampling mechanism, comprising a base plate, a placement box and a support column, the bottom of the base plate is fixedly connected with a universal wheel, the top of the base plate is provided with a card slot, and a support telescopic rod is movably installed on the top of the card slot, and a side of the support telescopic rod is provided with a limiting hole, and the inner wall of the limiting hole is movably connected to a limiting block, and the end of the limiting block is fixedly connected with a fixing spring, the side of the support telescopic rod is movably connected with a card rod, and the top of the card rod is movably installed with a top plate, and the top of the top plate is fixed A buffer spring is fixedly installed, and an arc-shaped shielding plate is fixed on the top of the buffer spring, and a rolling shaft is movably connected to the middle of the arc-shaped shielding plate, a rubber partition is movably installed on the top of the placement box, and a partition plate is movably connected to the side of the rubber partition, and a sponge pad is movably installed on the top of the partition plate, and a first drill bit is movably installed on the top of the sponge pad, a connecting rod is fixedly connected to the top of the bottom plate, and a metal handle is fixedly installed on the side of the connecting rod, a slide groove is opened on the top of the bottom plate, and a T-shaped slider is movably connected to the top of the slide groove, and the T-shaped The top of the slider is fixedly connected with a special-shaped telescopic plate, and the top of the special-shaped telescopic plate is fixedly installed with an electric push rod, the bottom of the electric push rod is fixed with a fixed plate, and the bottom of the fixed plate is provided with a mounting groove, and the bottom of the mounting groove is movably connected with a motor, and the end of the motor is fixedly connected with a fixed block, and the bottom of the fixed block is movably installed with a fixing bolt, the side of the motor is fixedly connected with a mounting block, and the top of the mounting block is movably connected with a mounting bolt, and the bottom of the mounting bolt is movably installed with a second drill bit, and the top of the support column is fixedly connected with a support A telescopic plate is supported, and an electric telescopic rod is fixedly installed on the bottom of the supporting telescopic plate, and a supporting block is fixedly installed on the bottom of the electric telescopic rod, and a rubber anti-skid pad is fixedly connected to the bottom of the supporting block, and a stabilizing block is fixedly connected to the bottom of the electric push rod, and a limiting spring is fixedly installed on the inner wall of the stabilizing block, and an L-shaped plate is fixedly installed on the end of the limiting spring, and a special-shaped rod is movably connected to the side of the L-shaped plate, and a first drill bit is fixedly connected to the end of the special-shaped rod, and a scale line is fixedly installed on the outer wall of the first drill bit, and a special-shaped block is fixedly installed on the top of the stabilizing block.

[0010] Preferably, the number of the universal wheels is 4, and the 4 universal wheels are grouped into 2 each, and the 2 groups of universal wheels are symmetrically arranged with the mid-vertical line of the base plate as the symmetry axis, and the universal wheels and the base plate are an integrated structure.

[0011] Preferably, the supporting telescopic rod forms a clamping structure with the bottom plate through a clamping slot, and the inner dimension of the clamping slot is completely consistent with the outer dimension of the supporting telescopic rod.

[0012] Preferably, the number of the buffer springs is 8, and each group of 4 buffer springs is a group, and the two groups of buffer springs are symmetrically arranged with the mid-vertical line of the top plate as the symmetry axis, and the top plate forms an elastic structure through the buffer springs and the arc-shaped shielding plate.

[0013] Preferably, the number of the sponge pads is 8, and 8 sponge pads are grouped into 2 pieces each, and 4 groups of sponge pads are arranged at equal distances on the inner wall of the placement box.

[0014] Preferably, the T-shaped slider forms a sliding structure with the bottom plate through a sliding groove, and the bottom of the T-shaped slider fits with the inner surface of the bottom plate.

[0015] Preferably, the bottom of the special-shaped telescopic plate is fixedly connected to the top of the electric push rod, and the special-shaped telescopic plate forms an integrated structure with the fixed plate through the electric push rod.

[0016] Preferably, the bottom of the fixing plate is movably connected to the top of the motor via a mounting groove, and the outer dimensions of the motor are completely consistent with the inner dimensions of the mounting groove.

[0017] Preferably, the end of the fixing bolt passes through the bottom of the fixing block and extends to the top of the fixing block, and the end of the fixing bolt is connected to the internal thread of the fixing plate, and the fixing block is connected to the fixing plate through the fixing bolt.

[0018] Preferably, the end of the mounting bolt passes through the top of the mounting block and extends to the bottom of the mounting block, and the end of the mounting bolt is connected to the internal thread of the second drill bit, and the mounting block is connected to the second drill bit through the mounting bolt.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the portable soil sampling mechanism;

[0020] 1. A stabilizing block composed of a limit spring, an L-shaped plate and a special-shaped block is provided. Through the limit spring, the L-shaped plate and the special-shaped block, the first drill bit can be directly assembled to the side of the stabilizing block through the special-shaped rod. Through the support telescopic rod, the support telescopic plate and the special-shaped telescopic plate, the overall area of ​​the device can be greatly reduced when it is carried and transported, so that the collector does not need to use large-scale transportation equipment to transport the device, which greatly reduces the user's use cost to a certain extent. When the internal parts of the device are damaged, the collector can disassemble and repair the special parts, thereby greatly improving the collector's maintenance efficiency;

[0021] 2. Equidistant sponge pads are provided. Through the placement box, the collector can directly carry multiple sets of drill bits with the device, thereby effectively avoiding the problem that the drill bit cannot be replaced and repaired in time when the drill bit is damaged during the collection of soil samples, thereby wasting the collector's sampling time. The maintenance efficiency of the collector is greatly increased. The rubber partitions, partitions and sponge pads are provided, so that the drill bit is not easy to roll and collide during transportation, thereby effectively preventing the drill bit from being damaged during transportation or movement;

[0022] 3. A T-shaped slider is provided for fitting installation. Through the first drill bit and the second drill bit, the collector can adjust the drill bit according to the hardness of the soil. When one drill bit is damaged, the collector can adjust the drill bit in time to use the other drill bit, and then disassemble and repair the damaged drill bit, which greatly avoids the collector from wasting time when the drill bit is damaged and the collector stops collecting for repair. The T-shaped slider and the slide groove make it more convenient for the collector to adjust the drill bit position.

[0023] 4. An arc-shaped shielding plate supported by a top plate, a buffer spring, a clamping rod and a rolling shaft is provided. Through the buffer spring, the top plate, the clamping rod and the arc-shaped shielding plate, when the soil sampling device is used for soil sampling in the mountains and forests, the equipment is not easily damaged by objects falling from the mountains or trees, and the safety of the users is greatly increased. It can also provide a certain degree of waterproofness when it rains. Through the limit holes, the fixed springs, the rolling shafts and the limit blocks, the collectors can quickly retract the supporting telescopic rods and the arc-shaped shielding plate when the arc-shaped shielding plate is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0025] Figure 2 It is a side view structural schematic diagram of the present invention;

[0026] Figure 3 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0027] Figure 4 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0028] Figure 5 It is a schematic diagram of the top cross-sectional structure of the present invention;

[0029] Figure 6 This is a front cross-sectional structural schematic diagram of the placement box of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the stabilizing block of the present invention.

[0031] In the figure: 1, bottom plate; 2, universal wheel; 3, card slot; 4, support telescopic rod; 5, top plate; 6, buffer spring; 7, arc shielding plate; 8, storage box; 9, partition plate; 10, rubber partition; 11, sponge pad; 12, first drill bit; 13, connecting rod; 14, metal handle; 15, slide groove; 16, T-shaped slide block; 17, special-shaped telescopic plate; 18, electric push rod; 19, fixed plate; 20, installation groove; 21, motor; 22, fixed Fixed block; 23. Fixing bolt; 24. Second drill bit; 25. Support column; 26. Support telescopic plate; 27. Electric telescopic rod; 28. Support block; 29. ​​Rubber anti-skid pad; 30. Stabilizing block; 31. Limiting hole; 32. Mounting block; 33. Mounting bolt; 34. Scale line; 35. Rolling shaft; 36. Clamping rod; 37. Limiting spring; 38. L-shaped plate; 39. Special-shaped block; 40. Special-shaped rod; 41. Fixing spring; 42. Limiting block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0033] See also Figure 1-7The present invention provides a technical solution: a portable soil sampling mechanism, including a bottom plate 1, a universal wheel 2, a card slot 3, a supporting telescopic rod 4, a top plate 5, a buffer spring 6, an arc-shaped shielding plate 7, a placement box 8, a partition plate 9, a rubber partition 10, a sponge pad 11, a first drill bit 12, a connecting rod 13, a metal handle 14, a slide 15, a T-shaped slider 16, a special-shaped telescopic plate 17, an electric push rod 18, a fixing plate 19, a mounting groove 20, a motor 21, a fixing block 22, a fixing bolt 23, a second drill bit 24, a supporting column 25, a supporting telescopic plate 26, an electric telescopic rod 27, a supporting block 28, a rubber anti-skid pad 29, a stabilizing block 30, a limiting hole 31, a mounting block 32, a mounting bolt 33, a scale line 34, a rolling shaft 35, and a card rod 36 , a limit spring 37, an L-shaped plate 38, a special-shaped block 39, a special-shaped rod 40, a fixed spring 41 and a limit block 42, the bottom of the bottom plate 1 is fixedly connected with a universal wheel 2, a card slot 3 is provided at the top of the bottom plate 1, and a support telescopic rod 4 is movably installed on the top of the card slot 3, and a limit hole 31 is provided on the side of the support telescopic rod 4, and the inner wall of the limit hole 31 is movably connected to the limit block 42, and the end of the limit block 42 is fixedly connected with a fixed spring 41, the side of the support telescopic rod 4 is movably connected with a card rod 36, and the top of the card rod 36 is movably installed with a top plate 5, and a buffer spring 6 is fixedly installed on the top of the top plate 5, and an arc-shaped shielding plate 7 is fixed on the top of the buffer spring 6, and the middle part of the arc-shaped shielding plate 7 is movably connected with a rolling shaft 35 A rubber partition 10 is movably installed on the top of the placement box 8, and a partition plate 9 is movably connected to the side of the rubber partition 10, and a sponge pad 11 is movably installed on the top of the partition plate 9, and a first drill bit 12 is movably installed on the top of the sponge pad 11, a connecting rod 13 is fixedly connected to the top of the bottom plate 1, and a metal handle 14 is fixedly installed on the side of the connecting rod 13, a slide groove 15 is opened on the top of the bottom plate 1, and a T-shaped slider 16 is movably connected to the top of the slide groove 15, and a special-shaped telescopic plate 17 is fixedly connected to the top of the T-shaped slider 16, and an electric push rod 18 is fixedly installed on the top of the special-shaped telescopic plate 17, and a fixed plate 19 is fixed to the bottom of the electric push rod 18, and a mounting groove 20 is opened at the bottom of the fixed plate 19, and the mounting groove 20 The bottom is movably connected with a motor 21, and the end of the motor 21 is fixedly connected with a fixed block 22, and the bottom of the fixed block 22 is movably installed with a fixing bolt 23, the side of the motor 21 is fixedly connected with a mounting block 32, and the top of the mounting block 32 is movably connected with a mounting bolt 33, and the bottom of the mounting bolt 33 is movably installed with a second drill bit 24, the top of the support column 25 is fixedly connected with a support telescopic plate 26, and the bottom of the support telescopic plate 26 is fixedly installed with an electric telescopic rod 27, and the bottom of the electric telescopic rod 27 is fixedly connected with a support block 28, and the bottom of the support block 28 is fixedly connected with a rubber anti-skid pad 29, the bottom of the electric push rod 18 is fixedly connected with a stabilizing block 30, and the inner wall of the stabilizing block 30 is fixedly installed with a limiting spring 37,An L-shaped plate 38 is fixed to the end of the limit spring 37, and a special-shaped rod 40 is movably connected to the side of the L-shaped plate 38, and the end of the special-shaped rod 40 is fixedly connected to the first drill bit 12, and a scale line 34 is fixedly installed on the outer wall of the first drill bit 12, and a special-shaped block 39 is fixedly installed on the top of the stabilizing block 30.

[0034] The number of the universal wheels 2 is 4, and each of the 4 universal wheels 2 forms a group of 2, and the 2 groups of universal wheels 2 are symmetrically arranged with the mid-vertical line of the bottom plate 1 as the symmetry axis, and the universal wheels 2 and the bottom plate 1 are an integrated structure. By arranging the universal wheels 2 to be bilaterally symmetrical, the universal wheels 2 have a better effect on the movement of the bottom plate 1, and by arranging the universal wheels 2 and the bottom plate 1 to be an integrated structure, the universal wheels 2 are not easy to fall off when driving the bottom plate 1 to move;

[0035] The supporting telescopic rod 4 forms a snap-fit ​​structure with the bottom plate 1 through the snap-fitting groove 3, and the internal dimensions of the snap-fitting groove 3 are completely consistent with the external dimensions of the supporting telescopic rod 4. By setting the supporting telescopic rod 4 and the bottom plate 1 in the snap-fitting structure, it is convenient for the user to disassemble the arc-shaped shielding plate 7;

[0036] The number of buffer springs 6 is 8, and each of the 8 buffer springs 6 is 4 in a group, and the 2 groups of buffer springs 6 are symmetrically arranged with the mid-vertical line of the top plate 5 as the symmetry axis, and the top plate 5 forms an elastic structure with the buffer springs 6 and the arc-shaped shielding plate 7. By setting the buffer springs 6 to be bilaterally symmetrical, the arc-shaped shielding plate 7 has a better protective effect on the soil sampling device, and by setting the top plate 5 and the arc-shaped shielding plate 7 to be an elastic structure, the protective performance of the arc-shaped shielding plate 7 on the device is greatly improved;

[0037] The number of sponge pads 11 is 8, and each 2 of the 8 sponge pads 11 form a group, and the 4 groups of sponge pads 11 are arranged at equal distances on the inner wall of the placement box 8. By arranging the sponge pads 11 at equal distances, the first drill bit 12 and the second drill bit 24 are not easy to roll in the placement box 8;

[0038] The T-shaped slider 16 forms a sliding structure with the bottom plate 1 through the slide groove 15, and the bottom of the T-shaped slider 16 is in contact with the inner surface of the bottom plate 1. The T-shaped slider 16 and the bottom plate 1 are arranged in a sliding structure, so that the collector can adjust the positions of the first drill bit 12 and the second drill bit 24 easily.

[0039] The bottom of the special-shaped telescopic plate 17 is fixedly connected to the top of the electric push rod 18, and the special-shaped telescopic plate 17 forms an integrated structure with the fixed plate 19 through the electric push rod 18. By setting the special-shaped telescopic plate 17 and the fixed plate 19 in an integrated structure, the first drill bit 12 or the second drill bit 24 is more stable when sampling soil;

[0040] The bottom of the fixing plate 19 is movably connected to the top of the motor 21 through the mounting groove 20, and the outer dimensions of the motor 21 are completely consistent with the inner dimensions of the mounting groove 20. By setting the outer dimensions of the motor 21 to be completely consistent with the inner dimensions of the mounting groove 20, the operation of the motor 21 is more stable.

[0041] The end of the fixing bolt 23 passes through the bottom of the fixing block 22 and extends to the top of the fixing block 22, and the end of the fixing bolt 23 is connected to the internal thread of the fixing plate 19, and the fixing block 22 is connected to the fixing plate 19 through the fixing bolt 23. By setting the fixing bolt 23 to pass through the fixing block 22, the motor 21 is more firmly fixed to the bottom of the fixing plate 19;

[0042] The end of the mounting bolt 33 passes through the top of the mounting block 32 and extends to the bottom of the mounting block 32, and the end of the mounting bolt 33 is connected to the internal thread of the second drill bit 24, and the mounting block 32 is connected to the second drill bit 24 through the mounting bolt 33. By arranging the mounting bolt 33 to pass through the mounting block 32, the installation effect of the second drill bit 24 is better.

[0043] Working principle: When using the portable soil sampling device, according to Figure 1-7 , place the bottom plate 1 together with the universal wheel 2 on the ground, open the top plate 5 by rotating the rolling shaft 35, then fix the clamping rod 36 on the side of the supporting telescopic rod 4 and clamp the top plate 5 on the top of the clamping rod 36, pull the supporting telescopic rod 4 to pop out the limiting block 42 from the limiting hole 31 through the fixing spring 41 to limit the supporting telescopic rod 4, then put the motor 21 into the bottom of the fixing plate 19 through the installation groove 20 and rotate the fixing bolt 23 to close the fixing block 22 and the fixing plate 19. Then, the second drill bit 24 is taken out from the top of the sponge pad 11 in the placement box 8, and the mounting bolt 33 is turned to close the mounting block 32 and the second drill bit 24. Then, the first drill bit 12 is taken out from the placement box 8, and the L-shaped plate 38 and the limit spring 37 are squeezed by the special-shaped rod 40 to penetrate into the stabilizing block 30, and the special-shaped rod 40 is installed and fixed by the clamping connection between the special-shaped rod 40 and the special-shaped block 39, and the first drill bit 12 and the second drill bit 24 are protected by the partition plate 9 and the rubber partition 10;

[0044] according to Figure 1 , Figure 2 and Figure 5 , grab the metal handle 14 and push the connecting rod 13 to move the bottom plate 1. When the soil sampling device is moved to the location where soil sampling is required, open the electric telescopic rod 27 at the bottom of the supporting telescopic plate 26, and fix the bottom plate 1 through the supporting block 28 and the rubber anti-skid pad 29. If there is a foreign object falling from a high altitude, the arc shielding plate 7 and the buffer spring 6 can play a good protective role;

[0045] according to Figure 1 , Figure 2 and Figure 5 , according to the hardness of the soil, grab the special-shaped telescopic plate 17, slide the T-shaped slider 16 in the slide groove 15 to align the first drill bit 12 or the second drill bit 24 with the sampling point, when the soil is soft, select the first drill bit 12, open the electric push rod 18 at the bottom of the special-shaped telescopic plate 17, and make the first drill bit 12 penetrate into the soil for sampling; when the soil is hard, select the second drill bit 24, turn on the motor 21 and the electric push rod 18, so that the second drill bit 24 penetrates into the soil for sampling, and observe the depth of the first drill bit 12 or the second drill bit 24 by observing the scale line 34.

[0046] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable soil sampling mechanism, comprising a base plate (1), a placement box (8) and a support column (25), characterized in that: The bottom of the base plate (1) is fixedly connected with a universal wheel (2), the top of the base plate (1) is provided with a slot (3), and a supporting telescopic rod (4) is movably mounted on the top of the slot (3), and a limiting hole (31) is provided on the side of the supporting telescopic rod (4), and the inner wall of the limiting hole (31) is movably connected with a limiting block (42), and the end of the limiting block (42) is fixedly connected with a fixing spring (41), the side of the supporting telescopic rod (4) is movably connected with a slot rod (36), and a top plate (5) is movably mounted on the top of the slot rod (36), and a buffer spring (6) is fixedly mounted on the top of the top plate (5), and an arc-shaped shielding plate (7) is fixed on the top of the buffer spring (6), and the middle part of the arc-shaped shielding plate (7) is movably connected to the supporting telescopic rod (4). The bottom plate (1) is movably connected to a rolling shaft (35); a rubber partition (10) is movably installed on the top of the placement box (8); and a partition plate (9) is movably connected to the side of the rubber partition (10); and a sponge pad (11) is movably installed on the top of the partition plate (9); and a first drill bit (12) is movably installed on the top of the sponge pad (11); a connecting rod (13) is fixedly connected to the top of the bottom plate (1); and a metal handle (14) is fixedly installed on the side of the connecting rod (13); a slide groove (15) is provided on the top of the bottom plate (1); and a T-shaped slider (16) is movably connected to the top of the slide groove (15); and a special-shaped telescopic plate (17) is fixedly connected to the top of the T-shaped slider (16); and the top of the special-shaped telescopic plate (17) is fixedly connected to the top of the special-shaped telescopic plate (17). An electric push rod (18) is fixedly installed, a fixing plate (19) is fixed at the bottom of the electric push rod (18), and a mounting groove (20) is opened at the bottom of the fixing plate (19), and a motor (21) is movably connected to the bottom of the mounting groove (20), and a fixing block (22) is fixedly connected to the end of the motor (21), and a fixing bolt (23) is movably installed at the bottom of the fixing block (22), a mounting block (32) is fixedly connected to the side of the motor (21), and a mounting bolt (33) is movably connected to the top of the mounting block (32), and a second drill bit (24) is movably installed at the bottom of the mounting bolt (33), and a support telescopic plate (26) is fixedly connected to the top of the support column (25), and the support telescopic plate (26) The bottom of the electric push rod (18) is fixedly installed with an electric telescopic rod (27), and the bottom of the electric telescopic rod (27) is fixedly installed with a support block (28), and the bottom of the support block (28) is fixedly connected with a rubber anti-skid pad (29), the bottom of the electric push rod (18) is fixedly connected with a stabilizing block (30), and the inner wall of the stabilizing block (30) is fixedly installed with a limit spring (37), and the end of the limit spring (37) is fixed with an L-shaped plate (38), and the side of the L-shaped plate (38) is movably connected with a special-shaped rod (40), and the end of the special-shaped rod (40) is fixedly connected with a first drill bit (12), and the outer wall of the first drill bit (12) is fixedly installed with a scale line (34), and the top of the stabilizing block (30) is fixedly installed with a special-shaped block (39); The end of the fixing bolt (23) passes through the bottom of the fixing block (22) and extends to the top of the fixing block (22), and the end of the fixing bolt (23) is connected to the internal thread of the fixing plate (19), and the fixing block (22) is connected to the fixing plate (19) through the fixing bolt (23); by arranging the fixing bolt (23) to pass through the fixing block (22), the motor (21) is more firmly fixed to the bottom of the fixing plate (19); The first drill bit (12) is inserted into the stabilizing block (30) by squeezing the L-shaped plate (38) and the limit spring (37) through the special-shaped rod (40), and is installed and fixed by the clamping connection between the special-shaped rod (40) and the special-shaped block (39); The number of the sponge pads (11) is 8, and each 2 of the 8 sponge pads (11) form a group, and 4 groups of sponge pads (11) are arranged at equal distances on the inner wall of the placement box (8); The T-shaped slider (16) forms a sliding structure with the bottom plate (1) through the slide groove (15), and the bottom of the T-shaped slider (16) is in contact with the inner surface of the bottom plate (1); The bottom of the special-shaped telescopic plate (17) is fixedly connected to the top of the electric push rod (18), and the special-shaped telescopic plate (17) forms an integrated structure with the fixed plate (19) through the electric push rod (18); The bottom of the fixing plate (19) is movably connected to the top of the motor (21) through the mounting groove (20), and the outer dimensions of the motor (21) are completely consistent with the inner dimensions of the mounting groove (20); The end of the mounting bolt (33) passes through the top of the mounting block (32) and extends to the bottom of the mounting block (32), and the end of the mounting bolt (33) is connected to the internal thread of the second drill bit (24), and the mounting block (32) is connected to the second drill bit (24) through the mounting bolt (33); When in use, the bottom plate (1) together with the universal wheel (2) is placed on the ground, the top plate (5) is opened by rotating the rolling shaft (35), then the clamping rod (36) is fixed to the side of the supporting telescopic rod (4) and the top plate (5) is clamped on the top of the clamping rod (36), the supporting telescopic rod (4) is pulled to pop out the limiting block (42) from the limiting hole (31) through the fixing spring (41) to limit the supporting telescopic rod (4), then the motor (21) is placed into the bottom of the fixing plate (19) through the installation groove (20) and the fixing bolt (23) is turned to fix the fixing block (22) and the fixing plate (19). The second drill bit (24) is then taken out from the top of the sponge pad (11) in the placement box (8), and the mounting bolt (33) is turned to close the mounting block (32) and the second drill bit (24). The first drill bit (12) is then taken out from the placement box (8), and is pressed into the stabilizing block (30) through the special-shaped rod (40) and the L-shaped plate (38) and the limit spring (37). The special-shaped rod (40) and the special-shaped block (39) are clamped to fix the first drill bit (12) and the second drill bit (24) and protected by the partition plate (9) and the rubber partition plate (10); The bottom plate (1) is moved by grasping the metal handle (14) and pushing the connecting rod (13). When the soil sampling device is moved to a location where soil sampling is required, the electric telescopic rod (27) at the bottom of the supporting telescopic plate (26) is opened, and the bottom plate (1) is fixed by the supporting block (28) and the rubber anti-skid pad (29). If a foreign object falls from a high altitude, the arc-shaped shielding plate (7) and the buffer spring (6) can play a good protective role. According to the hardness of the soil, the special-shaped telescopic plate (17) is grasped, and the first drill bit (12) or the second drill bit (24) is aligned with the sampling point by sliding the T-shaped slide block (16) in the slide groove (15). When the soil is soft, the first drill bit (12) is selected, and the electric push rod (18) at the bottom of the special-shaped telescopic plate (17) is opened to make the first drill bit (12) deeply penetrate into the soil for sampling. When the soil is hard, the second drill bit (24) is selected, and the motor (21) and the electric push rod (18) are turned on to make the second drill bit (24) deeply penetrate into the soil for sampling. The penetration degree of the first drill bit (12) or the second drill bit (24) is observed by observing the scale line (34).

2. The portable soil sampling mechanism according to claim 1, characterized in that: The number of the universal wheels (2) is four, and two of the four universal wheels (2) form a group, and the two groups of universal wheels (2) are symmetrically arranged with the mid-vertical line of the base plate (1) as the symmetry axis, and the universal wheels (2) and the base plate (1) are an integrated structure.

3. The portable soil sampling mechanism according to claim 1, characterized in that: The supporting telescopic rod (4) forms a clamping structure with the bottom plate (1) via the clamping slot (3), and the internal dimensions of the clamping slot (3) are completely consistent with the external dimensions of the supporting telescopic rod (4).

4. The portable soil sampling mechanism according to claim 1, characterized in that: The number of the buffer springs (6) is eight, and each group of four of the eight buffer springs (6) is formed, and the two groups of buffer springs (6) are symmetrically arranged with the mid-vertical line of the top plate (5) as the symmetry axis, and the top plate (5) forms an elastic structure with the buffer springs (6) and the arc-shaped shielding plate (7).

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