A sampler for automatically collecting deep soil samples from a soil pile

Abstract

The application discloses a sampler for automatically collecting deep soil samples of soil piles, which comprises end drill rods, growth drill rods and driving drill rods connected in sequence, and a manual driving mechanism is arranged on the driving drill rods; the end drill rod comprises an end drill rod outer cylinder, an end drill rod constraint cylinder is arranged in the end drill rod outer cylinder, and an end spiral drill rod is rotatably connected in the end drill rod constraint cylinder; the growth drill rod comprises a growth drill rod outer cylinder, a growth drill rod constraint cylinder is arranged in the growth drill rod outer cylinder, and a growth spiral drill rod is rotatably connected in the growth drill rod constraint cylinder; the sampler adopts a modular splicing design, the total length of the sampler is adjusted by increasing or decreasing the number of the growth drill rods, so that the sampling requirement under various depth conditions is realized; the sampler adopts the modular splicing design, is convenient to disassemble into smaller parts, can be easily loaded into a suitcase for carrying, and is convenient for single-person operation and use.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, specifically to an automated portable sampler for collecting deep soil samples from soil mounds. Background Technology

[0002] Traditional soil samplers typically sample at a depth of about one meter. When encountering large mounds of soil, they cannot collect soil samples from deeper depths. If an excavator is used for digging, it will cause significant disturbance to the surrounding soil, which is not conducive to environmental protection. If a traditional drilling rig is used, a relatively flat location is required to support the rig, and its use will be limited by specific environmental conditions.

[0003] Traditional manual soil samplers are physically demanding and have low sampling efficiency. Therefore, there is a need to develop a soil sampler that is easy for a single person to carry and operate, has high extraction efficiency, and can preferably adapt to sampling needs at different depths. Summary of the Invention

[0004] The purpose of this invention is to provide an automated portable sampler for collecting deep soil samples from soil piles. This sampler adopts a modular splicing design and can be assembled into samplers with various sampling depths according to actual needs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automated portable sampler for collecting deep soil samples from a soil mound includes an end drill rod, an extension drill rod, and a drive drill rod connected in sequence, with a manual drive mechanism on the drive drill rod.

[0007] The end drill rod includes an end drill rod outer cylinder, an end drill rod constraint cylinder is provided inside the end drill rod outer cylinder, and an end auger drill rod is rotatably connected inside the end drill rod constraint cylinder.

[0008] The growing drill pipe includes a growing drill pipe outer cylinder, a growing drill pipe constraint cylinder is provided inside the growing drill pipe outer cylinder, and a growing spiral drill pipe is rotatably connected inside the growing drill pipe constraint cylinder.

[0009] The drive drill pipe includes a drive drill pipe outer cylinder, a drive drill pipe rod constraint cylinder is provided inside the drive drill pipe outer cylinder, and a drive auger drill pipe is rotatably connected inside the drive drill pipe rod constraint cylinder.

[0010] One end of the extended drill pipe outer cylinder is threaded to the end drill pipe outer cylinder, and the other end of the extended drill pipe outer cylinder is threaded to the drive drill pipe outer cylinder.

[0011] The end drill rod constraint sleeve, the extension drill rod constraint sleeve and the drive drill rod constraint sleeve are sequentially snapped together and fixed, and the end auger drill rod, the extension auger drill rod and the drive auger drill rod are sequentially threaded together.

[0012] The manual drive mechanism includes a manual drive housing fixed to the outside of the outer cylinder of the drive drill rod. The side wall of the outer cylinder of the drive drill rod has a drive housing opening that communicates with the manual drive housing. The side wall of the drive drill rod constraint cylinder has a drive rod through hole. The outside of the manual drive housing has a drive shaft mating hole that communicates with both the inside and outside. A manual drive shaft is rotatably connected in the drive shaft mating hole. The manual drive shaft is connected to the drive auger drill rod through a gear set.

[0013] Preferably, a first drive gear is fixed at one end of the manual drive shaft inside the manual drive housing, and the manual drive housing has a clutch shaft mating hole arranged parallel to the drive shaft mating hole. A clutch drive shaft is rotatably connected in the clutch shaft mating hole, and the clutch drive shaft has a first hexagonal hole passing through both ends of it.

[0014] A worm support seat is fixed inside the drive drill rod constraint cylinder. A worm support shaft is rotatably connected to the worm support seat. A first drive worm is fixed on the worm support shaft. The end of the worm support shaft has a second hexagonal hole. A hexagonal prism transmission rod slides in the first hexagonal hole. One end of the hexagonal prism transmission rod passes through the drive rod through hole and is inserted into the second hexagonal hole. A limit end cap is threadedly fixed to the outer end of the clutch drive shaft.

[0015] An intermediate transmission gear is fixed on the clutch drive shaft, and the intermediate transmission gear meshes with the first drive gear.

[0016] A first driven worm gear is fixed on the drive auger rod, and the first driven worm gear is meshed with the first drive worm.

[0017] Explanation: Using a worm gear transmission to drive the auger drill rod is a labor-saving structure. Even when encountering debris that causes a significant increase in resistance, the auger drill rod can still be driven to rotate smoothly.

[0018] Preferably, the outer cylinder of the drive drill pipe is provided with a hammering mechanism, which consists of multiple hammering connecting seats fixed on the outer cylinder of the drive drill pipe and a hammering module connected to the hammering connecting seats.

[0019] The hammer connecting seat includes multiple hammer connecting seat housings fixed on the outer wall of the outer cylinder of the drive drill pipe. A second worm gear shaft is rotatably connected to the bottom of the hammer connecting seat housing. A second driven worm gear is fixed on the second worm gear shaft. A second worm connecting seat is fixed to the inner wall of the hammer connecting seat housing. A second worm shaft is rotatably connected to the second worm connecting seat. A second driving worm is fixed on the second worm shaft. The second driving worm is meshed with the second driven worm gear.

[0020] The hammer connecting seat housing has two second worm shaft through holes, and the two ends of the second worm shaft extend through the second worm shaft through holes to the outside of the hammer connecting seat housing.

[0021] The two adjacent ends of the second worm shaft are connected by a universal joint, and both ends of the universal joint are connected by a universal joint.

[0022] The top of the hammer connecting seat housing has a first transmission connection hole, and the top of the second worm gear shaft has a third hexagonal hole.

[0023] A hammer-driven housing is fixed to the outside of the manual drive housing. The side wall of the manual drive housing has a hammer-driven shaft mating hole that communicates with the hammer-driven housing. A hammer-driven shaft is rotatably connected in the hammer-driven shaft mating hole. A first hammer-driven gear is fixed to one end of the hammer-driven shaft inside the manual drive housing. The first hammer-driven gear meshes with the first drive gear.

[0024] A second hammer drive bevel gear is fixed at one end of the hammer drive shaft inside the hammer drive housing. The top of the hammer drive housing has a vertical drive shaft mating hole. A vertical drive shaft is rotatably connected inside the vertical drive shaft mating hole. A third hammer drive bevel gear is fixed at one end of the vertical drive shaft inside the hammer drive housing. The second hammer drive bevel gear and the third hammer drive bevel gear are meshed together.

[0025] A transmission rod housing is fixed to the outer side of the outer cylinder of the drive drill rod. The transmission rod housing surrounds one of the universal transmission rods. A fourth hammer drive bevel gear is fixed on the universal transmission rod. The bottom of the transmission rod housing has a bevel gear shaft mating hole. A bevel gear shaft is rotatably connected in the bevel gear shaft mating hole. A fifth hammer drive bevel gear is fixed to one end of the bevel gear shaft inside the transmission rod housing. The fifth hammer drive bevel gear meshes with the fourth hammer drive bevel gear.

[0026] The lower end of the bevel gear shaft is connected to the top of the vertical transmission shaft via a hammer-driven universal joint, and both ends of the hammer-driven universal joint are connected by universal joints.

[0027] The hammering module includes a hammering module housing, an annular impact hammer is slidably connected inside the hammering module housing, and a hammering return spring is press-fitted between the top of the annular impact hammer and the top of the hammering module housing.

[0028] A hammer support ring is fixedly installed inside the housing of the hammering module. The hammer support ring is located on the side of the annular impact hammer away from the hammering return spring.

[0029] A ratchet driven ring is fixed inside the annular impact hammer, and the lower end of the ratchet driven ring has multiple ratchet mating grooves;

[0030] The bottom of the hammer module housing has a ratchet drive shaft mating hole. A ratchet drive shaft is rotatably connected in the ratchet drive shaft mating hole. A ratchet drive ring is fixed on the ratchet drive shaft. The upper end of the ratchet drive ring has multiple right-angle drive ratchet teeth, which are matched one-to-one in the ratchet mating groove.

[0031] A ratchet-driven hexagonal prism is fixed to the lower end of the ratchet drive shaft, and the ratchet-driven hexagonal prism is inserted and connected in the third hexagonal hole.

[0032] Note: The hammering mechanism uses periodic impacts to continuously insert the entire sampler deeper into the soil, and the hammering module adopts a convenient disassembly and assembly design, which can adjust the number of hammering modules connected to adjust the overall impact force.

[0033] Preferably, the top of the hammer connecting base housing has multiple magnetic connection holes, and an upward-facing magnetic connecting cylinder is fixed inside the magnetic connection holes. Multiple magnetic connecting posts are fixed at the bottom of the hammer module housing. A permanent magnet is fixed at the bottom inside the magnetic connecting cylinder. A magnetic mating body is fixed at the lower end of the magnetic connecting post. The magnetic connecting posts are inserted into the magnetic connecting cylinder one by one.

[0034] Note: The hammer connector housing and the hammer module housing are fixedly connected by magnetic attraction, which facilitates quick installation and disassembly.

[0035] Preferably, the outer end of the manual drive shaft has an internal hexagonal hole, and the manual drive shaft is driven to rotate by a Z-shaped manual rocker arm. One end of the manual rocker arm is a hexagonal prism rod, and the other end of the manual rocker arm is rotatably connected to a handle rotating cylinder.

[0036] The hexagonal prism rod at one end of the manual crank is inserted into the internal hexagonal hole.

[0037] Preferably, the manual drive housing is provided with an electric drive mechanism for driving the manual drive shaft to rotate. The electric drive mechanism includes an electric drive connecting shell fixed on the manual drive housing. The electric drive connecting shell is a shell structure with both ends through. One end of the electric drive connecting shell is fixedly connected to the manual drive housing by multiple screws. An electric drive reducer is fixed to the other end of the electric drive connecting shell. An electric drive hexagonal prism is fixed on the output shaft of the electric drive reducer. The electric drive hexagonal prism is inserted into and connected to the internal hexagonal hole.

[0038] The electric drive reducer has a motor housing fixed on one side of the input shaft, and a drive motor is fixed inside the motor housing. The shaft of the drive motor is connected to the input shaft of the electric drive reducer.

[0039] Note: The system employs a hybrid drive mode combining manual and electric drive. When power is readily available, the use of electric drive can further improve work efficiency and reduce manpower consumption.

[0040] Preferably, a first constraint ring is fixedly provided inside the outer cylinder of the end drill pipe, and the end of the first constraint ring has multiple first constraint slots. A second constraint ring is fixedly provided outside the end drill pipe constraint cylinder, and the end of the second constraint ring has multiple second constraint protrusions fixedly provided. The multiple second constraint protrusions are engaged in each of the first constraint slots.

[0041] Preferably, the end drill pipe outer cylinder and the growth drill pipe outer cylinder are fixed together by a threaded connection. The end drill pipe constraint cylinder has multiple end constraint cylinder snap-fit ​​grooves on the outer side of the end near the growth drill pipe constraint cylinder. The growth drill pipe constraint cylinder has multiple growth constraint cylinder snap-fit ​​protrusions fixed on the end near the end drill pipe constraint cylinder. The growth constraint cylinder snap-fit ​​protrusions are snapped into the end constraint cylinder snap-fit ​​grooves one by one.

[0042] The outer side of the end of the growing drill pipe constraint cylinder near the driving drill pipe constraint cylinder has multiple growing constraint cylinder locking grooves. The end of the driving drill pipe constraint cylinder near the growing drill pipe constraint cylinder has multiple driving constraint cylinder locking protrusions, which are locked into the growing constraint cylinder locking grooves one by one.

[0043] The end auger rod and the end of the growing auger rod are fixedly connected by threads, and the end of the growing auger rod and the end of the driving auger rod are fixedly connected by threads.

[0044] Preferably, the drive drill rod constraint cylinder is provided with an external drainage guide structure. The external drainage guide structure includes an external drainage guide shell fixed inside the drive drill rod constraint cylinder. The external drainage guide shell is a trumpet-shaped shell with the tip pointing downwards. The side wall of the drive drill rod constraint cylinder has multiple soil external drainage holes at the external drainage guide shell. A flow guiding connecting ring is fixed on the outer side wall of the drive drill rod constraint cylinder at the soil external drainage holes. The side wall of the drive drill rod outer cylinder has a soil external drainage outlet that communicates with the flow guiding connecting ring.

[0045] An auxiliary guide column is fixed on the inner wall of the drive drill rod constraint cylinder between two adjacent soil drainage holes. The auxiliary guide column is a triangular prism structure, with one of its side edges facing the axis of the drive drill rod constraint cylinder.

[0046] Explanation: The external drainage structure can guide the drilled soil to be smoothly discharged to the outside of the drive drill rod outer cylinder through the soil external drainage through hole, the drainage connecting ring and the soil external drainage outlet.

[0047] Preferably, the above-mentioned automated portable sampler for collecting deep soil samples from a soil pile further includes an end collector. The end collector includes an end collector cylinder with one open end. The end of the end collector cylinder away from the open end has an end collector rod mating hole. An end collector rod is rotatably connected in the end collector rod mating hole. A spiral collection blade is fixed at one end of the end collector rod inside the end collector cylinder. Multiple end collector extension rods are threadedly connected to the end of the end collector rod away from the end collector cylinder.

[0048] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0049] 1. The sampler of the present invention adopts a modular splicing design. By increasing or decreasing the number of sections of the long drill rod, the overall length of the sampler can be adjusted to meet the sampling requirements under various depth conditions.

[0050] 2. The sampler of this invention adopts a modular splicing design, which makes it easy to disassemble into smaller parts, and can be easily packed into a suitcase for carrying, making it convenient for single-person operation;

[0051] 3. The sampler of the present invention can use a combined drive mode of manual drive and electric drive. When it is convenient to connect to electricity, the use of electric drive can further improve work efficiency and reduce manpower consumption.

[0052] 4. The sampler of the present invention is provided with multiple hammering mechanisms, which make it easy to continuously insert the entire sampler into the soil by using periodic impact. The hammering module adopts a convenient disassembly and assembly design, which can adjust the number of hammering modules connected to adjust the overall impact force. Attached Figure Description

[0053] Figure 1 This is the front view of the present invention;

[0054] Figure 2 yes Figure 1 Top view;

[0055] Figure 3 This is a schematic diagram of the end drill rod of the present invention;

[0056] Figure 4 This is a schematic diagram of the structure of the growth drill pipe of the present invention;

[0057] Figure 5 This is a schematic diagram of the structure of the drive drill rod of the present invention;

[0058] Figure 6 This is a schematic diagram of the structure of the first constraint ring of the present invention;

[0059] Figure 7 This is a schematic diagram of the external drainage guiding structure of the present invention;

[0060] Figure 8 yes Figure 7 Top view;

[0061] Figure 9 This is a schematic diagram of the hammering mechanism of the present invention;

[0062] Figure 10 yes Figure 9 Top view;

[0063] Figure 11 This is a top view of the hammer-shaped connecting seat of the present invention;

[0064] Figure 12 This is a schematic diagram of the structure of the electric drive mechanism of the present invention;

[0065] Figure 13 This is a schematic diagram of the structure of the growth constraint sleeve snap-fit ​​protrusion of the present invention;

[0066] Figure 14 This is a schematic diagram of the structure of the drive constraint cylinder snap-fit ​​protrusion of the present invention;

[0067] Figure 15 This is a schematic diagram of the manual crank of the present invention;

[0068] Figure 16 This is a schematic diagram of the end-point data collector of the present invention.

[0069] In the figure, 10-end drill rod, 11-end drill rod outer cylinder, 12-end drill rod constraint cylinder, 121-end constraint cylinder snap-fit ​​groove, 13-end spiral drill rod, 14-first constraint ring, 141-first constraint snap-fit ​​groove, 15-second constraint ring, 151-second constraint protrusion, 20-growing drill rod, 21-growing drill rod outer cylinder, 22-growing drill rod constraint cylinder, 221-growing constraint cylinder snap-fit ​​protrusion, 222-growing constraint cylinder snap-fit ​​groove, 23-growing spiral drill rod, 30-drive drill rod, 31-drive drill rod outer cylinder, 32-drive drill rod constraint cylinder, 321-drive constraint cylinder snap-fit ​​protrusion, 33-drive spiral drill rod, 34-external drainage guide structure, 341-external drainage guide shell, 342-soil external drainage through hole, 343 - Flow guiding connecting ring, 344 - Soil discharge outlet, 345 - Auxiliary flow guiding column, 40 - Manual drive mechanism, 401 - Drive receiving opening, 402 - Drive rod through hole, 41 - Manual drive receiving shell, 411 - Drive shaft mating hole, 412 - Clutch shaft mating hole, 42 - Manual drive shaft, 428 - Manual crank, 427 - Handle rotating cylinder, 429 - Internal hexagonal hole, 431 - First drive gear, 432 - Clutch drive shaft, 4321 - Limiting end cap, 433 - First hexagonal hole, 434 - Worm support seat, 435 - Worm support shaft, 436 - First drive worm, 437 - Second hexagonal hole, 438 - Hexagonal prism transmission rod, 439 - Intermediate transmission gear, 430 - First driven worm gear, 44 - Hammering Transmission housing, 441-Hammer drive shaft mating hole, 442-Hammer drive shaft, 443-First hammer drive gear, 444-Second hammer drive bevel gear, 445-Vertical drive shaft mating hole, 446-Vertical drive shaft, 447-Third hammer drive bevel gear, 451-Transmission rod housing, 452-Fourth hammer drive bevel gear, 453-Bevel gear shaft mating hole, 454-Bevel gear shaft, 455-Fifth hammer drive bevel gear, 456-Hammer drive universal joint, 50-Hammer mechanism, 51-Hammer connecting seat, 511-Hammer connecting seat housing, 512-Second worm gear shaft, 513-Second driven worm gear, 514-Second worm gear connecting seat, 515-Second worm gear shaft, 516-Second driving worm gear 517-Second worm gear shaft through hole, 518-First transmission connection hole, 519-Third hexagonal hole, 510-Universal drive rod, 52-Hammering module, 521-Hammering module housing, 522-Ring impact hammer, 523-Hammering return spring, 524-Hammering support ring, 525-Ratchet driven ring, 526-Ratchet mating groove, 531-Ratchet drive shaft mating hole, 532-Ratchet drive shaft, 533-Ratchet drive ring, 534-Right-angle drive ratchet, 535-Ratchet drive hexagonal prism, 541-Magnetic connection hole, 542-Magnetic connection cylinder, 543-Magnetic connection column, 544-Permanent magnet, 545-Magnetic mating body, 60-Electric drive mechanism, 61-Electric drive connecting shell, 62-Electric drive reducer.621-Electrically driven hexagonal prism; 63-Motor housing; 63-Drive motor; 70-End collector; 71-End collector cylinder; 711-End collector rod mating hole; 72-End collector rod; 721-Helical collection blade; 73-End collector extension rod. Detailed Implementation

[0070] The following is combined Figures 1-16 The present invention will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of the respective main view or structural schematic diagram.

[0071] Example:

[0072] An automated, portable sampler for collecting deep soil samples from soil mounds, such as Figure 1 As shown, it includes an end drill rod 10, an extension drill rod 20 and a drive drill rod 30 connected in sequence, and the drive drill rod 30 is provided with a manual drive mechanism 40.

[0073] like Figure 3 As shown, the end drill rod 10 includes an end drill rod outer cylinder 11, an end drill rod constraint cylinder 12 is provided inside the end drill rod outer cylinder 11, and an end spiral drill rod 13 is rotatably connected inside the end drill rod constraint cylinder 12.

[0074] like Figure 4 As shown, the growing drill pipe 20 includes a growing drill pipe outer cylinder 21, a growing drill pipe constraint cylinder 22 is provided inside the growing drill pipe outer cylinder 21, and a growing spiral drill pipe 23 is rotatably connected inside the growing drill pipe constraint cylinder 22.

[0075] like Figure 5 As shown, the drive drill rod 30 includes a drive drill rod outer cylinder 31, a drive drill rod constraint cylinder 32 is provided inside the drive drill rod outer cylinder 31, and a drive auger drill rod 33 is rotatably connected inside the drive drill rod constraint cylinder 32.

[0076] One end of the extension drill pipe outer cylinder 21 is threadedly connected to the end drill pipe outer cylinder 11, and the other end of the extension drill pipe outer cylinder 21 is threadedly connected to the drive drill pipe outer cylinder 31.

[0077] The end drill rod constraint cylinder 12, the extension drill rod constraint cylinder 22 and the drive drill rod constraint cylinder 32 are sequentially snapped together and fixed, and the end spiral drill rod 13, the extension spiral drill rod 23 and the drive spiral drill rod 33 are sequentially threaded together.

[0078] like Figure 2As shown, the manual drive mechanism 40 includes a manual drive receiving shell 41 fixed to the outside of the drive drill rod outer cylinder 31. The drive drill rod outer cylinder 31 has a drive receiving opening 401 that communicates with the manual drive receiving shell 41 on its side wall. The drive drill rod constraint cylinder 32 has a drive rod through hole 402 on its side wall. The manual drive receiving shell 41 has a drive shaft mating hole 411 that communicates with the outside. A manual drive shaft 42 is rotatably connected in the drive shaft mating hole 411. The manual drive shaft 42 is connected to the drive auger drill rod 33 through a gear set.

[0079] like Figure 2 As shown, a first drive gear 431 is fixed at one end of the manual drive shaft 42 inside the manual drive housing 41. The manual drive housing 41 has a clutch shaft mating hole 412 arranged parallel to the drive shaft mating hole 411. The clutch drive shaft 432 is rotatably connected inside the clutch shaft mating hole 412. The clutch drive shaft 432 has a first hexagonal hole 433 that passes through both ends of it.

[0080] A worm support seat 434 is fixed inside the drive drill rod constraint cylinder 32. A worm support shaft 435 is rotatably connected to the worm support seat 434. A first drive worm 436 is fixed on the worm support shaft 435. The end of the worm support shaft 435 has a second hexagonal hole 437. A hexagonal prism transmission rod 438 slides in the first hexagonal hole 433. One end of the hexagonal prism transmission rod 438 passes through the drive rod through hole 402 and is inserted into the second hexagonal hole 437. A limit end cap 4321 is threadedly fixed to the outer end of the clutch drive shaft 432.

[0081] An intermediate transmission gear 439 is fixed on the clutch drive shaft 432, and the intermediate transmission gear 439 is meshed with the first drive gear 431.

[0082] A first driven worm gear 430 is fixed on the drive auger rod 33, and the first driven worm gear 430 is meshed with the first drive worm 436.

[0083] like Figure 1 As shown, the outer cylinder 31 of the drive drill pipe is equipped with a hammering mechanism 50, such as... Figure 9 As shown, the hammering mechanism 50 consists of multiple hammering connection seats 51 fixed on the outer cylinder 31 of the drive drill pipe and hammering modules 52 connected to the hammering connection seats 51.

[0084] like Figure 10As shown, the hammer connecting seat 51 includes multiple hammer connecting seat housings 511 fixed on the outer wall of the outer cylinder 31 of the drive drill pipe. A second worm gear shaft 512 is rotatably connected to the bottom of the hammer connecting seat housing 511. A second driven worm gear 513 is fixed on the second worm gear shaft 512. A second worm connecting seat 514 is fixed to the inner side wall of the hammer connecting seat housing 511. A second worm shaft 515 is rotatably connected to the second worm connecting seat 514. A second driving worm 516 is fixed on the second worm shaft 515. The second driving worm 516 is meshed with the second driven worm gear 513.

[0085] The hammer connecting seat housing 511 has two second worm shaft through holes 517, and the two ends of the second worm shaft 515 extend through the second worm shaft through holes 517 to the outside of the hammer connecting seat housing 511.

[0086] The ends of two adjacent second worm shafts 515 are connected by a universal joint 510, and both ends of the universal joint 510 are connected by a universal joint.

[0087] The top of the hammer connecting seat housing 511 has a first transmission connection hole 518, and the top of the second worm gear shaft 512 has a third hexagonal hole 519.

[0088] like Figure 2 , Figure 12 As shown, a hammering transmission housing 44 is fixed to the outside of the manual drive housing 41. The side wall of the manual drive housing 41 has a hammering transmission shaft mating hole 441 that communicates with the hammering transmission housing 44. A hammering transmission shaft 442 is rotatably connected in the hammering transmission shaft mating hole 441. A first hammering transmission gear 443 is fixed to one end of the hammering transmission shaft 442 inside the manual drive housing 41. The first hammering transmission gear 443 is meshed with the first drive gear 431.

[0089] A second hammer drive bevel gear 444 is fixed at one end of the hammer drive shaft 442 inside the hammer drive housing 44. The top of the hammer drive housing 44 has a vertical drive shaft mating hole 445. A vertical drive shaft 446 is rotatably connected inside the vertical drive shaft mating hole 445. A third hammer drive bevel gear 447 is fixed at one end of the vertical drive shaft 446 inside the hammer drive housing 44. The second hammer drive bevel gear 444 and the third hammer drive bevel gear 447 are meshed and connected.

[0090] like Figure 10As shown, a transmission rod receiving shell 451 is fixed to the outside of the drive drill rod outer cylinder 31. The transmission rod receiving shell 451 surrounds one of the universal transmission rods 510. A fourth hammer transmission bevel gear 452 is fixed on the universal transmission rod 510. The bottom of the transmission rod receiving shell 451 has a bevel gear shaft mating hole 453. A bevel gear shaft 454 is rotatably connected in the bevel gear shaft mating hole 453. A fifth hammer transmission bevel gear 455 is fixed to one end of the bevel gear shaft 454 inside the transmission rod receiving shell 451. The fifth hammer transmission bevel gear 455 meshes with the fourth hammer transmission bevel gear 452.

[0091] The lower end of the bevel gear shaft 454 is connected to the top end of the vertical transmission shaft 446 via a hammer-driven universal joint 456. Both ends of the hammer-driven universal joint 456 are connected by universal joints.

[0092] like Figure 9 As shown, the hammering module 52 includes a hammering module housing 521, an annular impact hammer 522 is slidably connected inside the hammering module housing 521, and a hammering return spring 523 is press-fitted between the top of the annular impact hammer 522 and the top of the hammering module housing 521.

[0093] A hammering support ring 524 is fixedly provided inside the hammering module housing 521. The hammering support ring 524 is located on the side of the annular impact hammer 522 away from the hammering return spring 523.

[0094] A ratchet driven ring 525 is fixed inside the annular impact hammer 522, and the lower end of the ratchet driven ring 525 has multiple ratchet mating grooves 526.

[0095] The bottom of the hammer module housing 521 has a ratchet drive shaft mating hole 531. A ratchet drive shaft 532 is rotatably connected inside the ratchet drive shaft mating hole 531. A ratchet drive ring 533 is fixed on the ratchet drive shaft 532. The upper end of the ratchet drive ring 533 has multiple right-angle drive ratches 534. The right-angle drive ratches 534 are matched one-to-one in the ratchet mating groove 526.

[0096] A ratchet drive hexagonal prism 535 is fixed at the lower end of the ratchet drive shaft 532, and the ratchet drive hexagonal prism 535 is inserted into the third hexagonal hole 519.

[0097] like Figure 9 As shown, the top of the hammer connecting base housing 511 has multiple magnetic connection holes 541, and a magnetic connecting cylinder 542 with its opening facing upward is fixed inside the magnetic connection holes 541. The bottom of the hammer module housing 521 has multiple magnetic connecting posts 543. A permanent magnet 544 is fixed inside the bottom of the magnetic connecting cylinder 542. A magnetic mating body 545 is fixed at the lower end of the magnetic connecting post 543. The magnetic connecting posts 543 are inserted into the magnetic connecting cylinder 542 one by one.

[0098] The manual drive shaft 42 has an internal hexagonal hole 429 at its outer end. The manual drive shaft 42 is driven to rotate by a Z-shaped manual rocker arm 428. One end of the manual rocker arm 428 is a hexagonal prism rod, and the other end of the manual rocker arm 428 is rotatably connected to a handle rotating cylinder 427.

[0099] The hexagonal prism rod at one end of the manual crank 428 is inserted and connected to the internal hexagonal hole 429.

[0100] like Figure 12 As shown, the manual drive housing 41 is provided with an electric drive mechanism 60 for driving the manual drive shaft 42 to rotate. The electric drive mechanism 60 includes an electric drive connecting housing 61 fixed on the manual drive housing 41. The electric drive connecting housing 61 is a housing structure with both ends through. One end of the electric drive connecting housing 61 is fixedly connected to the manual drive housing 41 by multiple screws. The other end of the electric drive connecting housing 61 is fixed with an electric drive reducer 62. An electric drive hexagonal prism 621 is fixed on the output shaft of the electric drive reducer 62. The electric drive hexagonal prism 621 is inserted into the internal hexagonal hole 429.

[0101] The electric drive reducer 62 has a motor housing 631 fixed on one side of its input shaft. The drive motor 63 is fixed inside the motor housing 631, and the shaft of the drive motor 63 is connected to the input shaft of the electric drive reducer 62.

[0102] like Figure 6 As shown, a first constraint ring 14 is fixedly provided inside the outer cylinder 11 of the end drill rod. The end of the first constraint ring 14 has multiple first constraint slots 141. A second constraint ring 15 is fixedly provided on the outside of the end drill rod constraint cylinder 12. Multiple second constraint protrusions 151 are fixedly provided on the end of the second constraint ring 15. The multiple second constraint protrusions 151 are correspondingly engaged in each of the first constraint slots 141.

[0103] like Figure 13 , Figure 14 As shown, the end drill pipe outer cylinder 11 and the extension drill pipe outer cylinder 21 are fixed together by a threaded connection. The end drill pipe constraint cylinder 12 has multiple end constraint cylinder snap-fit ​​grooves 121 on the outer side of one end near the extension drill pipe constraint cylinder 22. Multiple extension constraint cylinder snap-fit ​​protrusions 221 are fixed on one end of the extension drill pipe constraint cylinder 22 near the end drill pipe constraint cylinder 12. The extension constraint cylinder snap-fit ​​protrusions 221 are snapped into the end constraint cylinder snap-fit ​​grooves 121 one by one.

[0104] The outer side of the end of the growing drill pipe constraint cylinder 22 near the driving drill pipe constraint cylinder 32 has multiple growing constraint cylinder snap-fit ​​grooves 222. The end of the driving drill pipe constraint cylinder 32 near the growing drill pipe constraint cylinder 22 has multiple driving constraint cylinder snap-fit ​​protrusions 321, which are snapped into the growing constraint cylinder snap-fit ​​grooves 222 one by one.

[0105] The end auger rod 13 and the end of the growing auger rod 23 are fixedly connected by threads, and the end of the growing auger rod 23 and the end of the driving auger rod 33 are fixedly connected by threads.

[0106] like Figure 7 , Figure 8 As shown, the drive drill rod constraint cylinder 32 is provided with an external drainage guide structure 34. The external drainage guide structure 34 includes an external drainage guide shell 341 fixed inside the drive drill rod constraint cylinder 32. The external drainage guide shell 341 is a trumpet-shaped shell with the tip pointing downwards. The side wall of the drive drill rod constraint cylinder 32 has multiple soil external drainage holes 342 at the external drainage guide shell 341. A guide connecting ring 343 is fixed on the outer side wall of the drive drill rod constraint cylinder 32 at the soil external drainage holes 342. The side wall of the drive drill rod outer cylinder 31 has a soil external drainage outlet 344 that communicates with the guide connecting ring 343.

[0107] An auxiliary guide column 345 is fixed on the inner wall of the drive drill rod constraint cylinder 32 at a position between two adjacent soil drainage holes 342. The auxiliary guide column 345 is a triangular prism structure, and one of its side edges faces the axis of the drive drill rod constraint cylinder 32.

[0108] like Figure 16 As shown, an automated portable sampler for collecting deep soil samples from a soil pile also includes an end collector 70. The end collector 70 includes an end collector cylinder 71 with one open end. The end of the end collector cylinder 71 away from the open end has an end collector rod mating hole 711. An end collector rod 72 is rotatably connected inside the end collector rod mating hole 711. A spiral collection blade 721 is fixed to one end of the end collector rod 72 inside the end collector cylinder 71. Multiple end collector extension rods 73 are threadedly connected to the end of the end collector rod 72 away from the end collector cylinder 71.

[0109] In practical application, the end drill rod constraint cylinder 12 is first inserted into the end drill rod outer cylinder 11, and the second constraint protrusion 151 is engaged in the first constraint slot 141. The end spiral drill rod 13 is then inserted into the end drill rod constraint cylinder 12.

[0110] Then, the growing spiral drill rod 23 is threadedly fixed to the end spiral drill rod 13, the growing drill rod constraint sleeve 22 is sleeved on the outside of the growing spiral drill rod 23, and the growing constraint sleeve locking protrusion 221 is locked in the end constraint sleeve locking groove 121. The growing drill rod outer sleeve 21 is sleeved on the outside of the growing drill rod constraint sleeve 22, and the growing drill rod outer sleeve 21 is threadedly fixed to the end drill rod outer sleeve 11.

[0111] The drive auger drill rod 33 is threadedly fixed to the growth auger drill rod 23, and at this time the drive constraint cylinder locking protrusion 321 is locked in the growth constraint cylinder locking groove 222. The drive drill rod outer cylinder 31 is rotated to thread-fix the drive drill rod outer cylinder 31 and the growth drill rod outer cylinder 21.

[0112] The hexagonal prism drive rod 438 is inserted into the first hexagonal hole 433. One end of the hexagonal prism drive rod 438 passes through the drive receiving opening 401 and the drive rod through hole 402 and is inserted into the second hexagonal hole 437. The limiting end cap 4321 is threaded to the end of the clutch drive shaft 432. The limiting end cap 4321 can limit and constrain the hexagonal prism drive rod 438.

[0113] The hammering module 52 is connected to the top of the hammering connector 51. The magnetic connector 543 is inserted into the magnetic connector 542. The magnetic attraction between the magnetic connector 545 and the permanent magnet 544 is used to fix the hammering module shell 521 of the hammering module 52 to the hammering connector shell 511 of the hammering connector 51. At this time, the ratchet-driven hexagonal prism 535 is inserted into the third hexagonal hole 519.

[0114] At this point, the entire sampler is assembled. Place the sampler vertically on the ground and insert one end of the manual crank 428 (which is a hexagonal prism) into the internal hexagonal hole 429. Manually drive the manual crank 428 to rotate the manual drive shaft 42. The manual drive shaft 42 drives the intermediate transmission gear 439 to rotate through the first drive gear 431. The intermediate transmission gear 439 drives the clutch drive shaft 432 and the hexagonal prism transmission rod 438 to rotate together. The hexagonal prism transmission rod 438 drives the worm support shaft 435 and the first drive worm 436 to rotate together. The first drive worm 436 drives the first driven worm wheel 430 to rotate. The first driven worm wheel 430 drives the drive auger drill rod 33, the extension auger drill rod 23, and the end auger drill rod 13 to rotate together. The lower end of the end auger drill rod 13 is set as a pointed tip. The end auger drill rod 13 is used to drill holes in the soil.

[0115] Furthermore, the impact of the hammering module 52 is used to continuously drive the sampler deeper into the soil. Specifically, the first drive gear 431 drives the first hammering transmission gear 443 and the second hammering transmission bevel gear 444 to rotate together. The second hammering transmission bevel gear 444 drives the third hammering transmission bevel gear 447 and the vertical transmission shaft 446 to rotate together. The vertical transmission shaft 446 drives the bevel gear shaft 454 to rotate through the hammering transmission universal joint 456. The bevel gear shaft 454 drives the fourth hammering transmission bevel gear 452 to rotate through the fifth hammering transmission bevel gear 455. The fourth hammering transmission bevel gear 452 drives the universal joint 510 to rotate. The universal joint 510 drives each of the second worm gear shafts 515 to rotate synchronously.

[0116] The second worm shaft 515 drives the second driven worm wheel 513 to rotate via the second drive worm 516. The second driven worm wheel 513 drives the second worm wheel shaft 512, the ratchet drive shaft 532, and the ratchet drive ring 533 to rotate together. Under the mutual constraint of the right-angle drive ratchet 534 on the ratchet drive ring 533 and the ratchet mating groove 526, the ratchet driven ring 525 moves away from the ratchet drive ring 533. The ratchet driven ring 525 drives the annular impact hammer 522 to move together and compress the hammer return spring 523. When the right-angle drive ratchet 534 rotates through a certain position... After the ratchet engagement groove 526 is moved away, driven by the hammer return spring 523, the annular impact hammer 522 quickly approaches and strikes the hammer support ring 524. The impact force generated by the collision between the annular impact hammer 522 and the hammer support ring 524 will be transmitted to the drive drill rod outer cylinder 31 through the hammer module housing 521 and the hammer connecting seat housing 511. Then the impact force is transmitted to the lower end of the end drill rod outer cylinder 11 through the extension drill rod outer cylinder 21. The end drill rod outer cylinder 11 generates a vertical downward impact on the soil, causing the end drill rod outer cylinder 11 to continuously impact and penetrate deeper into the soil.

[0117] As the sampler continuously impacts and penetrates the soil, the driving auger 33, the extending auger 23, and the end auger 13 continuously transport the drilled soil from bottom to top in the end drill rod constraint cylinder 12, the extending drill rod constraint cylinder 22, and the driving drill rod constraint cylinder 32. When the drilled soil reaches the outer discharge guide shell 341, under the guiding action of the outer discharge guide shell 341, the drilled soil is finally discharged to the outside of the driving drill rod outer cylinder 31 through the soil outer discharge through hole 342, the guide connecting ring 343, and the soil outer discharge outlet 344.

[0118] When the end spiral drill rod 13 has drilled to the predetermined depth, stop driving the manual drive shaft 42, remove the limiting end cap 4321 from the end of the clutch drive shaft 432, pull the hexagonal transmission rod 438 out of the first hexagonal hole 433, turn the drive drill rod outer cylinder 31, remove the drive drill rod outer cylinder 31 from the top of the extension drill rod outer cylinder 21, pull the drive drill rod outer cylinder 31 upward, and the drive drill rod outer cylinder 31 drives the extension spiral drill rod 23 and the end spiral drill rod 13 to be pulled out from the extension drill rod constraint cylinder 22 and the end drill rod constraint cylinder 12 through the drive spiral drill rod 33;

[0119] Insert the end-collector cylinder 71 with its opening facing downwards into the extension drill rod constraint cylinder 22 and the end drill rod constraint cylinder 12, so that the end-collector cylinder 71 is at the predetermined sampling depth. Rotate the end-collector extension rod 73 and apply a vertical downward force to the end-collector extension rod 73, so that the end-collector cylinder 71 is inserted into the soil. The end-collector extension rod 73 drives the spiral collection blade 721 to rotate together through the end-collector rod 72. The spiral collection blade 721 is used to collect soil into the end-collector cylinder 71. Finally, pull out the end-collector cylinder 71 and save the soil sample in the end-collector cylinder 71 into a sampling bottle. The end-collector cylinder 71 can be used for multiple collections as needed.

[0120] After the collection is completed, the outer cylinder 21 of the extension drill rod and the outer cylinder 11 of the end drill rod can be pulled out together.

[0121] When it is convenient to connect to electricity or carry an outdoor power source, the electric drive mechanism 60 can be used to drive the manual drive shaft 42 to rotate. The electric drive connecting shell 61 is fixedly connected to the manual drive receiving shell 41 by multiple screws. At this time, the electric drive hexagonal prism 621 is inserted into the internal hexagonal hole 429. The drive motor 63 drives the input shaft of the electric drive reducer 62 to rotate. Then, the output shaft of the electric drive reducer 62 drives the manual drive shaft 42 to rotate through the electric drive hexagonal prism 621.

Claims

1. An automated, portable sampler for collecting deep soil samples from a soil mound, characterized in that, It comprises end drill rod (10), growth drill rod (20) and drive drill rod (30) connected in turn, drive drill rod (30) is equipped with manual drive mechanism (40); The end drill rod (10) comprises an end drill rod outer cylinder (11), an end drill rod constraint cylinder (12) is arranged in the end drill rod outer cylinder (11), and an end spiral drill rod (13) is rotatably connected in the end drill rod constraint cylinder (12); The growth drill rod (20) comprises a growth drill rod outer cylinder (21), a growth drill rod constraint cylinder (22) is arranged in the growth drill rod outer cylinder (21), and a growth spiral drill rod (23) is rotatably connected in the growth drill rod constraint cylinder (22); The drive drill rod (30) comprises a drive drill rod outer cylinder (31), a drive drill rod constraint cylinder (32) is arranged in the drive drill rod outer cylinder (31), and a drive spiral drill rod (33) is rotatably connected in the drive drill rod constraint cylinder (32); One end of the growth drill rod outer cylinder (21) is threadedly connected with the end drill rod outer cylinder (11), and the other end of the growth drill rod outer cylinder (21) is threadedly connected with the drive drill rod outer cylinder (31); The end drill rod constraint cylinder (12), the growth drill rod constraint cylinder (22) and the drive drill rod constraint cylinder (32) are sequentially clamped and fixed, and the end spiral drill rod (13), the growth spiral drill rod (23) and the drive spiral drill rod (33) are sequentially threadedly connected; The manual drive mechanism (40) comprises a manual drive containing shell (41) fixed outside the drive drill rod outer cylinder (31), the drive drill rod outer cylinder (31) has a drive containing opening (401) in communication with the manual drive containing shell (41) on the side wall, the drive drill rod constraint cylinder (32) has a drive rod through hole (402) on the side wall, the manual drive containing shell (41) has a drive shaft matching hole (411) in communication inside and outside on the outside, a manual drive shaft (42) is rotatably connected in the drive shaft matching hole (411), the manual drive shaft (42) is drivingly connected with the drive spiral drill rod (33) through a gear set, and the manual drive shaft (42) has an internal hexagonal hole (429) on the outer end; One end of the manual drive shaft (42) inside the manual drive containing shell (41) is fixed with a first drive gear (431), the manual drive containing shell (41) has a clutch shaft matching hole (412) arranged in parallel with the drive shaft matching hole (411), a clutch drive shaft (432) is rotatably connected in the clutch shaft matching hole (412), and the clutch drive shaft (432) has a first hexagonal hole (433) penetrating through both ends thereof; The driving drill rod rod constraint cylinder (32) is fixed with a worm support seat (434), the worm support seat (434) is rotatably connected with a worm support shaft (435), the worm support shaft (435) is fixed with a first driving worm (436), the worm support shaft (435) end has a second hexagonal hole (437), the first hexagonal hole (433) is slidably connected with a hexagonal prism transmission rod (438), one end of the hexagonal prism transmission rod (438) is inserted into the second hexagonal hole (437) through the driving rod perforation (402), the clutch driving shaft (432) outer end is fixed with a limiting end cover (4321); The clutch driving shaft (432) is fixed with an intermediate transmission gear (439), and the intermediate transmission gear (439) is in meshing connection with the first driving gear (431); The driving spiral drill rod (33) is fixed with a first driven worm wheel (430), and the first driven worm wheel (430) is in meshing connection with the first driving worm (436); The driving drill rod outer cylinder (31) is provided with a hammering mechanism (50), which comprises a plurality of hammering connecting seats (51) fixed on the driving drill rod outer cylinder (31) and a hammering module (52) connected to the hammering connecting seat (51). The hammering connecting seat (51) comprises a plurality of hammering connecting seat housings (511) fixed on the outer side wall of the driving drill rod outer cylinder (31), a second worm wheel rotating shaft (512) is rotatably connected to the inner bottom of the hammering connecting seat housing (511), a second driven worm wheel (513) is fixed on the second worm wheel rotating shaft (512), a second worm connecting seat (514) is fixed on the inner side wall of the hammering connecting seat housing (511), a second worm rotating shaft (515) is rotatably connected to the second worm connecting seat (514), a second driving worm (516) is fixed on the second worm rotating shaft (515), and the second driving worm (516) is in meshing connection with the second driven worm wheel (513); The hammering connecting seat housing (511) has two second worm rotating shaft through holes (517), and the second worm rotating shaft (515) extends to the outside of the hammering connecting seat housing (511) through the second worm rotating shaft through holes (517) at both ends thereof; The adjacent two second worm rotating shafts (515) are drivingly connected through universal transmission rods (510), and the universal transmission rods (510) are connected through universal joints at both ends thereof; The hammering connecting seat housing (511) has a first transmission connecting hole (518) at the top, and the second worm wheel rotating shaft (512) has a third hexagonal hole (519) at the top. The hammering transmission containing shell (44) is fixed outside the manual driving containing shell (41), the side wall of the manual driving containing shell (41) has hammering transmission shaft matching hole (441) communicated with the hammering transmission containing shell (44), the hammering transmission shaft matching hole (441) is rotatably connected with hammering transmission shaft (442), one end of the hammering transmission shaft (442) in the manual driving containing shell (41) is fixed with first hammering transmission gear (443), the first hammering transmission gear (443) is meshed with the first driving gear (431); One end of the hammering transmission shaft (442) in the hammering transmission containing shell (44) is fixed with second hammering transmission bevel gear (444), the hammering transmission containing shell (44) top has vertical transmission shaft matching hole (445), the vertical transmission shaft matching hole (445) is rotatably connected with vertical transmission shaft (446), one end of the vertical transmission shaft (446) in the hammering transmission containing shell (44) is fixed with third hammering transmission bevel gear (447), the second hammering transmission bevel gear (444) is meshed with the third hammering transmission bevel gear (447); The driving drill rod outer cylinder (31) outside is fixed with transmission rod containing shell (451), the transmission rod containing shell (451) is surrounded in one of the universal transmission rod (510), the fourth hammering transmission bevel gear (452) is fixed on the universal transmission rod (510), the transmission rod containing shell (451) bottom has bevel gear shaft matching hole (453), the bevel gear shaft matching hole (453) is rotatably connected with bevel gear rotating shaft (454), one end of the bevel gear rotating shaft (454) in the transmission rod containing shell (451) is fixed with fifth hammering transmission bevel gear (455), the fifth hammering transmission bevel gear (455) is meshed with the fourth hammering transmission bevel gear (452); The bevel gear rotating shaft (454) lower end is drivenly connected with the vertical transmission shaft (446) top end through a hammering transmission universal shaft (456), the hammering transmission universal shaft (456) both ends are connected using universal joint; The hammering module (52) includes hammering module shell (521), the annular impact hammer (522) is slidably connected in the hammering module shell (521), the annular impact hammer (522) top is top pressure matched with the hammering module shell (521) inner top between hammering reset spring (523); The hammering support ring (524) is fixed in the hammering module shell (521), the hammering support ring (524) is on the side of the annular impact hammer (522) away from the hammering reset spring (523); The inside of the annular impact hammer (522) is fixed with the ratchet driven ring (525), the ratchet driven ring (525) lower end has a plurality of ratchet matching grooves (526); The hammer module shell (521) bottom has a ratchet drive shaft matching hole (531), a ratchet drive shaft (532) is rotatably connected in the ratchet drive shaft matching hole (531), a ratchet drive ring (533) is fixed on the ratchet drive shaft (532), a plurality of right angle drive ratchet teeth (534) are arranged on the upper end of the ratchet drive ring (533), and the right angle drive ratchet teeth (534) are correspondingly matched in the ratchet matching groove (526); The lower end of the ratchet drive shaft (532) is fixed with a ratchet drive hexagonal prism (535), and the ratchet drive hexagonal prism (535) is inserted and connected in the third hexagonal hole (519).

2. The soil sampler of claim 1, wherein, The hammer module shell (521) bottom is fixed with a plurality of magnetic attraction connecting columns (543), a permanent magnet (544) is fixed in the bottom of the magnetic attraction connecting barrel (542), a magnetic attraction matching body (545) is fixed at the lower end of the magnetic attraction connecting column (543), and the magnetic attraction connecting column (543) is correspondingly inserted and connected in the magnetic attraction connecting barrel (542).

3. The soil sampler of claim 1, wherein, The manual drive shaft (42) is driven to rotate by a Z-shaped manual rocker (428), one end of the manual rocker (428) is a hexagonal prism rod, and the other end of the manual rocker (428) is rotatably connected with a handle rotating barrel (427).

4. The soil sampler of claim 1, wherein, The manual drive containing shell (41) is provided with an electric drive mechanism (60) for driving the manual drive shaft (42) to rotate, the electric drive mechanism (60) comprises an electric drive connecting shell (61) fixed on the manual drive containing shell (41), the electric drive connecting shell (61) is a shell structure with through holes at both ends, one end of the electric drive connecting shell (61) is fixedly connected with the manual drive containing shell (41) through a plurality of screws, the other end of the electric drive connecting shell (61) is fixed with an electric drive speed reducer (62), an electric drive hexagonal prism (621) is fixed on the output shaft of the electric drive speed reducer (62), and the electric drive hexagonal prism (621) is inserted and connected in the inner hexagonal hole (429). The electric drive speed reducer (62) has a motor containing shell (631) fixed on one side of an input shaft, a drive motor (63) is fixed in the motor containing shell (631), and the rotating shaft of the drive motor (63) is in transmission connection with the input shaft of the electric drive speed reducer (62).

5. The soil sampler of claim 1, wherein, The end drilling rod outer barrel (11) is fixedly provided with a first constraint ring (14), the first constraint ring (14) has a plurality of first constraint clamping grooves (141) at the end, the end drilling rod constraint barrel (12) is fixedly provided with a second constraint ring (15) on the outer side, the second constraint ring (15) is fixedly provided with a plurality of second constraint protrusions (151) at the end, and the plurality of second constraint protrusions (151) are correspondingly clamped in each first constraint clamping groove (141).

6. The soil sampler of claim 1, wherein, The end drill rod outer tube (11) is fixed with the growth drill rod outer tube (21) through threaded connection, the end drill rod constraint cylinder (12) has a plurality of end constraint cylinder clamping grooves (121) outside one end close to the growth drill rod constraint cylinder (22), the growth drill rod constraint cylinder (22) is fixed with a plurality of growth constraint cylinder clamping protrusions (221) at one end close to the end drill rod constraint cylinder (12), and the growth constraint cylinder clamping protrusions (221) are clamped in the end constraint cylinder clamping grooves (121) one by one. The growth drill rod constraint cylinder (22) has a plurality of growth constraint cylinder clamping grooves (222) outside one end close to the driving drill rod constraint cylinder (32), the driving drill rod constraint cylinder (32) is fixed with a plurality of driving constraint cylinder clamping protrusions (321) at one end close to the growth drill rod constraint cylinder (22), and the driving constraint cylinder clamping protrusions (321) are clamped in the growth constraint cylinder clamping grooves (222) one by one. The end spiral drill rod (13) and the growth spiral drill rod (23) are fixed and connected through threads between ends.

7. The soil sampler of claim 1, wherein, The driving drill rod constraint cylinder (32) is provided with an outer discharge flow guide structure (34), the outer discharge flow guide structure (34) comprises an outer discharge flow guide shell (341) fixed in the driving drill rod constraint cylinder (32), the outer discharge flow guide shell (341) is a horn-shaped shell with a pointed end downward, the driving drill rod constraint cylinder (32) side wall has a plurality of soil discharge through holes (342) at the outer discharge flow guide shell (341), and the driving drill rod constraint cylinder (32) outer side wall is fixed with a flow guide communication ring (343) at the soil discharge through hole (342). The driving drill rod constraint cylinder (32) inner side wall is fixed with an auxiliary flow guide column body (345) between adjacent two soil discharge through holes (342), the auxiliary flow guide column body (345) is a triangular prism structure, and one side edge thereof is directed to the axis of the driving drill rod constraint cylinder (32).

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