Multi-stage layered frozen soil sampling device

Abstract

The invention discloses a multi-stage layered frozen soil sampling device, and particularly relates to the technical field of soil sampling, the multi-stage layered frozen soil sampling device comprises a mounting disc, a plurality of sealing plates on the surfaces of a plurality of sampling covers can be opened under the action of centrifugal force, and then scrapers in two sealing plates can scrape soil and make the soil enter the sampling covers, so that the soil can be sampled; then, a rubber sealing cover extruded by the soil moves downwards to drive a sleeve to enable a plurality of first connecting columns to extrude a plurality of third springs, meanwhile, the sleeve moves downwards to drive two steel wire ropes to pull two sealing plates, and at the moment, under the resilience force action of the two steel wire ropes and reset springs, the two sealing plates can reset to the initial positions; the sampling covers are arranged on the upper portion of the soil sampling device, the sampling covers on the upper portion can repeat the steps to collect the soil, the phenomenon of soil layer channeling in the soil sampling process can be prevented, and meanwhile due to the fact that the multiple sampling covers are independent individuals, the multi-stage stratified sampling effect can be achieved in the sampling process.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, and in particular to a multi-stage stratified frozen soil sampling device. Background Art

[0002] Soil sampling refers to the method of collecting soil samples, including the layout of sampling and sampling technology. The collection of profile soil samples should be carried out after the profile observation and recording is completed. Before sampling, the profile should be repaired and cleaned, and the top layer of loose soil should be scraped off. Then samples are taken from the central typical part layer by layer from top to bottom. There are many types of soil samplers. A small shovel can be used to collect surface soil samples from farmland or wasteland. To study the general physical properties of soil, such as soil bulk density, porosity and water holding properties, a ring knife can be used. The ring knife is a cylinder with openings at both ends and a blade at the bottom. The height and diameter of the cylinder are both about 5 cm. The most commonly used sampling tool is a soil drill, which is divided into two types: manual operation and mechanical operation.

[0003] In the prior art, the traditional soil sampling device can collect the soil into the sampling device at one time to observe its soil layer structure. However, when used for frozen soil, since the frozen soil is relatively dry and part of it contains ice, when sampling through the sampling device, its original structure is destroyed due to sampling, and the soil structure may become loose. Then, the loose frozen soil may cause soil layers to burst inside the sampling device, which may affect the sampling personnel's judgment on the soil layer structure. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-stage layered frozen soil sampling device to solve the problems raised in the above-mentioned background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A multi-stage stratified frozen soil sampling device comprises a mounting plate, a plurality of mounting tubes are arranged inside the mounting plate, a rotating shaft is arranged inside the mounting plate, a soil-breaking drill bit is detachably mounted on the bottom surface of the rotating shaft, and a plurality of sampling covers are arranged on the outer circumferential wall surface of the rotating shaft; A plurality of connecting blocks, wherein the connecting blocks are rotatably connected to the inside of the mounting disk, a plurality of baffles are fixedly installed inside the mounting disk, the positions of the baffles correspond to the positions of the connecting blocks, the bottom surface of the connecting block is fixedly installed with the mounting tube, a sliding rod is movably sleeved inside the mounting tube, a second spring is movably sleeved on the outer circular wall surface of the sliding rod, a first limiting ring is fixedly sleeved inside the mounting tube, the inner wall surface of the first limiting ring is movably sleeved on the sliding rod, a fixing cone is fixedly installed on the bottom surface of the sliding rod, a first limiting ring is fixedly installed on the outer circular wall surface of the fixing cone, and a plurality of positioning grooves are provided on the outer circular wall surface of the mounting tube; A first fixing frame, wherein the first fixing frame is fixedly mounted inside the mounting disk, a connecting pipe is rotatably connected inside the first fixing frame, a transmission screw is connected to the internal thread of the connecting pipe, a driven pulley is fixedly sleeved on the outer circumferential wall surface of the connecting pipe, a protective cover is fixedly mounted on the top surface of the mounting disk, a driving motor is fixedly mounted on the top surface of the protective cover, a driving shaft of the driving motor passes through the inside of the protective cover, a driving pulley is fixedly sleeved on the outer circumferential wall surface of the driving shaft of the driving motor, a transmission belt is arranged between the driving pulley and the driven pulley, and the driven pulley is connected to the driving pulley through the transmission belt; A plurality of mounting boxes, wherein the plurality of mounting boxes are fixedly mounted inside the mounting plate, a second fixing frame is arranged between the plurality of mounting boxes, a positioning rod is fixedly mounted inside the second fixing frame, the outer circular wall surface of the positioning rod is fixedly sleeved with a limiting tube, the outer circular wall surface of the positioning rod is movably sleeved with a connecting seat, the outer circular wall surface of the positioning rod is movably sleeved with a first spring, one side of the plurality of connecting seats is respectively fixedly mounted with the outer wall surface of the second fixing frame, the inner bottom surface and the bottom surface of the second fixing frame are rotatably connected with a mounting sleeve, the inner movably sleeved with a collet, and the outer circular wall surface of the mounting sleeve is threadedly connected with a threaded fixing cap; The interior of several of the sampling covers is rotatably connected to two sealing plates, the two sealing plates are spaced apart, the outer circular wall surfaces of several of the sealing plates are fixedly installed with a first soil guide cover, the outer circular wall surfaces of several of the sampling covers are fixedly installed with two second soil guide covers, the bottom surfaces of several of the sampling covers are fixedly installed with a positioning sleeve, the outer circular wall surface of the positioning sleeve is threadedly connected with a second screw fixing sleeve, the inner circular wall surface of the positioning sleeve is movably sleeved with the rotating shaft, the interior of several of the sampling covers can be detachably installed with a fixing plate, the interior of several of the sampling covers is provided with a sleeve, and the inner circular wall surface of the sleeve The bottom surface of the sleeve is fixedly mounted with a rubber sealing cover, the inner bottom surface of the sampling cover is fixedly mounted with a fixing ring, the top surface of the fixing ring is fixedly mounted with the rubber sealing cover, a plurality of second mounting caps are fixedly mounted inside the sampling cover, a third spring is movably mounted inside the second mounting cap, a first connecting column is movably mounted inside the second mounting cap, a first sealing ring is fixedly mounted inside the second mounting cap, the inner circular wall surface of the first sealing ring is movably mounted with the first connecting column, and the top surface of the first connecting column is fixedly mounted with the sleeve; Two steel wire ropes are fixedly installed on the inner bottom surface of several sleeves, one end of the steel wire ropes is fixedly installed on the inner circular wall surface of the sealing plate, several mounting frames are fixedly installed on the outer circular wall surface of the sampling cover, every two mounting frames and one sealing plate form a group, the inner part of the mounting frame is fixedly sleeved with a first mounting cap, the inner part of the first mounting cap is movably sleeved with a return spring, the inner part of the first mounting cap is movably sleeved with a second connecting column, one end of the second connecting column is fixedly installed on the sealing plate, the inner circular walls of several sealing plates are fixedly installed with scrapers, and the outer circular walls of several sealing plates are fixedly installed with counterweight bars.

[0006] By adopting the above technical solution, when in use, the staff screws the transmission screw of the corresponding length into the interior of the connecting tube according to the sampling depth, and then with the threaded transmission action of the transmission screw and the connecting tube, the transmission screw will continue to move downward into the mounting sleeve inside the second fixing frame, and push the mounting sleeve to drive the second fixing frame to move downward to move it out of the interior of the mounting disk. During this process, multiple first springs will be squeezed. After the above steps are completed, the staff connects and fixes the transmission screw and the mounting sleeve through the threaded fixing cap and the collet, and then the staff sets the corresponding multiple sampling covers on the outside of the rotating shaft through the positioning sleeve according to the sampling depth. At this time, the staff can use the second screw fixing sleeve to fix the positioning sleeve and the sampling cover on the outside of the rotating shaft, and then the staff puts the rotating shaft into the first The inside of the installation sleeve at the bottom of the second fixing frame is fixed again by the collet and the threaded fixing cap to complete the assembly of the transmission screw and the rotating shaft. After the above steps are completed, the staff drives the active pulley to rotate through the driving motor, and then under the belt transmission action of the active pulley and the transmission belt, the driven pulley will drive the connecting pipe to reverse, and then under the threaded transmission action of the connecting pipe and the transmission screw, the transmission screw will move upward to complete the reset. At this time, the staff will rotate the multiple connecting blocks out of the inside of the mounting disk, and then the multiple baffles will limit the multiple connecting blocks. At the same time, the multiple mounting pipes will rotate out of the bottom of the mounting disk, and then the staff can step on the multiple pedals outside the multiple fixing cones to make the multiple fixing cones extend from the inside of the mounting pipe and insert into the soil. , so as to complete the placement of the mounting disk. After the above steps are completed, the staff uses the driving motor, and the driving shaft of the driving motor rotates to rotate the transmission screw and drive the second fixed frame and the rotating shaft to move downward, and then the earth-breaking drill bit at the bottom of the rotating shaft rotates and moves downward to break the surface of the frozen soil. At this time, under the action of centrifugal force, multiple sealing plates on the surfaces of multiple sampling covers will open, and then the rotation of the sealing plates will drive the second connecting column to squeeze the reset spring, and then the soil drilled by the earth-breaking drill bit will accumulate on its top through its spiral chip groove. At this time, the scrapers inside the two sealing plates will scrape the soil and make it enter the interior of the sampling cover, and then the weight of the interior of the sampling cover will gradually increase due to the accumulation of soil, and then the rubber sealing cover squeezed by the soil will move downward to drive the sleeve The multiple first connecting columns squeeze the multiple third springs, and the sleeve moves downward to drive the two steel wires to pull the two sealing plates. At this time, under the elastic force of the two steel wires and the reset springs, the two sealing plates will return to their initial positions, and then as the soil continues to accumulate on the top of the earth-breaking drill bit, the two second soil guide covers on the surface of the sampling cover and the first soil guide covers on the surfaces of the two sealing plates will guide the accumulated soil, so that the soil is continuously lifted upward along the spiral involute grooves on its surface. At this time, the sampling cover located above will repeat the above steps to collect the soil. In this process, since the soil will be sealed and collected inside the sampling cover when a certain depth is drilled, the phenomenon of soil layer leakage during sampling can be prevented. At the same time, since the multiple sampling covers are independent individuals,Therefore, the effect of multi-level stratified sampling can be achieved during sampling.

[0007] Preferably, the inner bottom surface and the inner top surface of the mounting plate are provided with a plurality of mounting grooves, the inner part of the mounting groove is movably sleeved with a fourth spring, the inner part of the mounting groove is movably sleeved with a pressure plate, the top surface of the pressure plate is fixedly provided with a positioning block, the inner part of the mounting groove is fixedly sleeved with a second limiting ring, the inner circular wall surface of the second limiting ring is movably sleeved with the positioning block, the top surfaces of the plurality of connecting blocks are provided with positioning holes, the inner wall surfaces of the positioning holes are movably sleeved with the positioning block, and the interior of the mounting plate is fixedly provided with a plurality of fixed magnets.

[0008] By adopting the above technical solution, when the connecting block is rotated out of the interior of the mounting disk, the rebound force of the multiple fourth springs will cause the multiple positioning blocks to enter the interior of the positioning holes, thereby limiting and fixing them, preventing the mounting tube from being displaced during use. At the same time, when the connecting block is retracted into the interior of the mounting disk, the fixed magnet will magnetically fix the connecting block, thereby preventing the multiple mounting tubes from rotating arbitrarily and being damaged during transportation of the mounting disk.

[0009] Preferably, a dust cover is fixedly mounted on the inner bottom surface and the inner bottom surface of a plurality of the mounting plates, and one side of the dust cover is fixedly mounted on the outer wall surface of the connecting seat.

[0010] By adopting the above technical solution, dust and foreign matter can be prevented from entering the interior of the installation box and causing jamming.

[0011] Preferably, a cleaning knife ring is detachably installed inside a plurality of the installation tubes.

[0012] By adopting the above technical solution, it is convenient to scrape the soil on the surface of the fixed cone when it is retracted into the installation pipe.

[0013] Preferably, a positioning tube is fixedly mounted on the top surface of the mounting plate, the inner circumferential wall of the positioning tube is movably sleeved with the transmission screw, the outer circumferential wall of the positioning tube is movably sleeved with a protective sleeve, and the outer circumferential wall of the protective sleeve is threadedly connected with a first threaded fixing sleeve.

[0014] By adopting the above technical solution, it is convenient to protect the transmission screw when it is in use.

[0015] Preferably, a second sealing ring is fixedly sleeved inside a plurality of the first mounting caps, and an inner circular wall surface of the second sealing ring is movably sleeved with the second connecting column.

[0016] By adopting the above technical solution, soil is prevented from entering the interior of the first mounting cap and affecting its use.

[0017] Preferably, the outer circular wall surfaces of several of the connecting blocks are fixedly sleeved with anti-slip sleeves.

[0018] By adopting the above technical solution, workers are prevented from slipping when using the connecting block, which affects its use effect.

[0019] Preferably, surfaces of the plurality of sealing plates, the plurality of the first soil guiding covers and the plurality of the second soil guiding covers are all coated with a wear-resistant coating.

[0020] By adopting the above technical solution, the service life of the sealing plate, the first soil guiding cover and the second soil guiding cover can be easily improved.

[0021] In summary, the present invention mainly has the following beneficial effects: Under the action of centrifugal force, multiple sealing plates on the surfaces of multiple sampling covers will open, and then the scrapers inside the two sealing plates will scrape the soil and make it enter the interior of the sampling cover, and then the rubber sealing cover squeezed by the soil will move downward and drive the sleeve to make the multiple first connecting columns squeeze the multiple third springs. At the same time, the downward movement of the sleeve will drive the two steel wire ropes to pull the two sealing plates. At this time, under the action of the rebound force of the two steel wire ropes and the reset spring, the two sealing plates will return to the initial position, and then the sampling cover located above will repeat the above steps to collect the soil, thereby preventing the soil from layering during sampling. At the same time, since the multiple sampling covers are independent individuals, the effect of multi-level stratified sampling can be achieved during sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the protective cover structure of the present invention; Figure 3 It is a schematic diagram of the installation plate structure of the present invention; Figure 4 It is a schematic diagram of the structure of the installation box of the present invention; Figure 5 is a schematic structural diagram of a second fixing frame of the present invention; Figure 6 It is a schematic diagram of the installation pipe structure of the present invention; Figure 7 It is a schematic diagram of the structure of the sampling cover of the present invention; Figure 8 is a schematic diagram of the second mounting cap structure of the present invention; Fig. 9 yes Figure 3 Schematic diagram of the local structure of A; Fig.10 yes Figure 7 Schematic diagram of the local structure of B.

[0023] Figure numerals: 1, mounting plate; 2, mounting tube; 3, rotating shaft; 4, sampling cover; 5, earth-breaking drill bit; 6, protective cover; 7, driving motor; 8, positioning tube; 9, protective sleeve; 10, first threaded fixing sleeve; 11, transmission screw; 12, first fixing frame; 13, connecting pipe; 14, driven pulley; 15, driving pulley; 16, transmission belt; 17, baffle; 18, mounting box; 19, second fixing frame; 20, connecting seat; 21, positioning rod; 22, limiting tube; 23, first spring; 24, dust cover; 25, mounting sleeve; 26, collet; 27, threaded fixing cap; 28, sliding rod; 29, second spring; 30, fixing cone; 31, cleaning knife ring; 32, positioning groove; 33, pedal rod; 34. The first limiting ring; 35. The connecting block; 36. The positioning hole; 37. The anti-slip sleeve; 38. The sealing plate; 39. The counterweight bar; 40. The scraper; 41. The first soil guide cover; 42. The mounting frame; 43. The fixing ring; 44. The second mounting cap; 45. The rubber sealing cover; 46. The sleeve; 47. The wire rope; 48. The fixing plate; 49. The second soil guide cover; 50. The positioning sleeve; 51. The second screw fixing sleeve; 52. The third spring; 53. The first connecting column; 54. The first sealing ring; 55. The mounting groove; 56. The fourth spring; 57. The pressure plate; 58. The positioning block; 59. The second limiting ring; 60. The first mounting cap; 61. The reset spring; 62. The second connecting column; 63. The second sealing ring; 64. The fixing magnet. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10A multi-stage layered frozen soil sampling device comprises: a mounting plate 1, a plurality of mounting tubes 2 are arranged inside the mounting plate 1, a rotating shaft 3 is arranged inside the mounting plate 1, a soil-breaking drill bit 5 is detachably mounted on the bottom surface of the rotating shaft 3, a plurality of sampling covers 4 are arranged on the outer circumferential wall surface of the rotating shaft 3; a plurality of connecting blocks 35, the plurality of connecting blocks 35 are rotatably connected inside the mounting plate 1, a plurality of baffles 17 are fixedly mounted inside the mounting plate 1, the position of the baffles 17 corresponds to the position of the connecting blocks 35, the bottom surface of the connecting blocks 35 is fixedly mounted on the mounting tube 2, a sliding rod 28 is movably sleeved inside the mounting tube 2, a second spring 29 is movably sleeved on the outer circumferential wall surface of the sliding rod 28, a first limiting ring 34 is fixedly sleeved inside the mounting tube 2, and the inner circumferential wall surface of the first limiting ring 34 is The wall surface is movably connected with the slide bar 28, a fixed cone 30 is fixedly installed on the bottom surface of the slide bar 28, a first limit ring 34 is fixedly installed on the outer circumferential wall surface of the fixed cone 30, and a plurality of positioning grooves 32 are provided on the outer circumferential wall surface of the mounting tube 2; a first fixed frame 12 is fixedly installed inside the mounting disk 1, a connecting pipe 13 is rotatably connected inside the first fixed frame 12, a transmission screw 11 is connected to the internal thread of the connecting pipe 13, a driven pulley 14 is fixedly connected on the outer circumferential wall surface of the connecting pipe 13, a protective cover 6 is fixedly installed on the top surface of the protective cover 6, a driving motor 7 is fixedly installed on the top surface of the protective cover 6, a driving shaft of the driving motor 7 passes through the inside of the protective cover 6, a driving pulley 15 is fixedly connected on the outer circumferential wall surface of the driving shaft of the driving motor 7, and a driving pulley 15 is fixedly connected on the outer circumferential wall surface of the driving shaft of the driving motor 7. A transmission belt 16 is provided between the pulley 15 and the driven pulley 14, and the driven pulley 14 and the driving pulley 15 are connected by the transmission belt 16; a plurality of mounting boxes 18, and the plurality of mounting boxes 18 are fixedly installed inside the mounting disk 1, and a second fixing frame 19 is provided between the plurality of mounting boxes 18, and a positioning rod 21 is fixedly installed inside the second fixing frame 19, and the outer circular wall surface of the positioning rod 21 is fixedly sleeved with a limiting tube 22, and the outer circular wall surface of the positioning rod 21 is movably sleeved with a connecting seat 20, and the outer circular wall surface of the positioning rod 21 is movably sleeved with a first spring 23, and one side of the plurality of connecting seats 20 is fixedly installed with the outer wall surface of the second fixing frame 19 respectively, and the inner bottom surface and the bottom surface of the second fixing frame 19 are rotatably connected with a mounting sleeve 25, and the mounting sleeve 25 A collet 26 is movably sleeved inside, and a threaded fixing cap 27 is threadedly connected to the outer circumferential wall of the mounting sleeve 25; the interiors of several sampling covers 4 are rotatably connected to two sealing plates 38, and the two sealing plates 38 are arranged at intervals; the outer circumferential walls of several sealing plates 38 are fixedly installed with a first soil guide cover 41; the outer circumferential walls of several sampling covers 4 are fixedly installed with two second soil guide covers 49; the bottom surfaces of several sampling covers 4 are fixedly installed with a positioning sleeve 50, and the outer circumferential wall of the positioning sleeve 50 is threadedly connected with a second screw fixing sleeve 51, and the inner circumferential wall of the positioning sleeve 50 is movably sleeved with the rotating shaft 3; the interiors of several sampling covers 4 are detachably installed with a fixing plate 48, and the interiors of several sampling covers 4 are provided with a sleeve 46, and the inner circumferential wall of the sleeve 46 is movably sleeved with the rotating shaft 3.A rubber sealing cover 45 is fixedly installed on the bottom surface of the sleeve 46, a fixing ring 43 is fixedly installed on the inner bottom surface of the sampling cover 4, and the top surface of the fixing ring 43 is fixedly installed with the rubber sealing cover 45. A plurality of second mounting caps 44 are fixedly installed inside the sampling cover 4, and a third spring 52 is movably sleeved inside the second mounting cap 44, and a first connecting column 53 is movably sleeved inside the second mounting cap 44, and a first sealing ring 54 is fixedly sleeved inside the second mounting cap 44, and the inner circular wall surface of the first sealing ring 54 is movably sleeved with the first connecting column 53, and the top surface of the first connecting column 53 is fixedly installed with the sleeve 46; two steel wire ropes 47 are fixedly installed on the inner bottom surfaces of the plurality of sleeves 46, and one end of the steel wire rope 47 is fixedly installed with the inner circular wall surface of the sealing plate 38, and the sampling cover 46 is fixedly installed with a plurality of second mounting caps 4 ... A plurality of mounting frames 42 are fixedly mounted on the outer circumferential wall surface of the cover 4, and every two mounting frames 42 and a sealing plate 38 form a group. A first mounting cap 60 is fixedly sleeved inside the mounting frame 42, and a return spring 61 is movably sleeved inside the first mounting cap 60. A second connecting column 62 is movably sleeved inside the first mounting cap 60, and one end of the second connecting column 62 is fixedly mounted on the sealing plate 38. Scrapers 40 are fixedly mounted on the inner circumferential walls of a plurality of sealing plates 38, and counterweight bars 39 are fixedly mounted on the outer circumferential walls of a plurality of sealing plates 38. When in use, the staff screws the transmission screw 11 of the corresponding length into the interior of the connecting pipe 13 according to the sampling depth, and then with the threaded transmission action of the transmission screw 11 and the connecting pipe 13, the transmission screw 11 continuously moves downward and enters the first The second fixing frame 19 is installed in the installation sleeve 25 inside, and the installation sleeve 25 is pushed to drive the second fixing frame 19 to move downward to move it out of the interior of the mounting plate 1. During this process, multiple first springs 23 will be squeezed. After the above steps are completed, the staff connects and fixes the transmission screw 11 and the installation sleeve 25 through the threaded fixing cap 27 and the collet 26, and then the staff sets the corresponding multiple sampling covers 4 on the outside of the rotating shaft 3 through the positioning sleeve 50 according to the sampling depth. At this time, the staff can use the second threaded fixing sleeve 51 to fix the positioning sleeve 50 and the sampling cover 4 on the outside of the rotating shaft 3, and then the staff puts the rotating shaft 3 into the interior of the installation sleeve 25 at the bottom of the second fixing frame 19, and fixes it again through the collet 26 and the threaded fixing cap 27, thereby completing the After the above steps are completed, the staff will drive the active pulley 15 to rotate through the driving motor 7, and then under the belt transmission action of the active pulley 15 and the transmission belt 16, the driven pulley 14 will drive the connecting pipe 13 to reverse, and then under the threaded transmission action of the connecting pipe 13 and the transmission screw 11, the transmission screw 11 will move upward to complete the reset. At this time, the staff will rotate the multiple connecting blocks 35 out of the inside of the mounting disk 1, and then the multiple baffles 17 will limit the multiple connecting blocks 35. At the same time, the multiple mounting pipes 2 will rotate out of the bottom of the mounting disk 1. Then, the staff can step on the multiple pedals 33 outside the multiple fixing cones 30 to make the multiple fixing cones 30 extend from the inside of the mounting pipe 2 and insert into the soil.In this way, the placement of the mounting plate 1 is completed. After the above steps are completed, the staff uses the driving motor 7, and the driving shaft of the driving motor 7 rotates to rotate the transmission screw 11 and drive the second fixing frame 19 and the rotating shaft 3 to move downward, and then the earth-breaking drill bit 5 at the bottom of the rotating shaft 3 rotates and moves downward to break the surface of the frozen soil. At this time, under the action of centrifugal force, multiple sealing plates 38 on the surfaces of multiple sampling covers 4 will open, and then the rotation of the sealing plates 38 will drive the second connecting column 62 to squeeze the reset spring 61, and then the soil drilled by the earth-breaking drill bit 5 will accumulate on the top through its spiral chip removal groove. At this time, the scraper 40 inside the two sealing plates 38 will scrape the soil and make it enter the interior of the sampling cover 4, and then the weight of the interior of the sampling cover 4 will gradually increase due to the accumulation of soil, and then the rubber sealing cover 45 squeezed by the soil will move downward and drive the sleeve 46 to make multiple first connecting columns 5 3. The plurality of third springs 52 are squeezed, and the sleeve 46 moves downward to drive the two steel wires 47 to pull the two sealing plates 38. At this time, under the action of the rebound force of the two steel wires 47 and the reset spring 61, the two sealing plates 38 will be reset to the initial position. Then, as the soil is continuously accumulated on the top of the earth-breaking drill bit 5, the two second soil guide covers 49 on the surface of the sampling cover 4 and the first soil guide covers 41 on the surfaces of the two sealing plates 38 will guide the accumulated soil, so that the soil is continuously lifted upward along the spiral involute grooves on its surface. At this time, the sampling cover 4 located above will repeat the above steps to collect the soil. In this process, since the soil will be sealed and collected inside the sampling cover 4 when a certain depth is drilled, the phenomenon of soil layer leakage during sampling can be prevented. At the same time, since the plurality of sampling covers 4 are independent individuals, the effect of multi-level stratified sampling can be achieved during sampling.

[0026] Embodiment 2: Based on the above embodiment 1, refer to Figure 3 and Fig. 9 The inner bottom surface and the inner top surface of the mounting plate 1 are provided with a plurality of mounting grooves 55, the inner part of the mounting groove 55 is movably sleeved with a fourth spring 56, the inner part of the mounting groove 55 is movably sleeved with a pressure plate 57, the top surface of the pressure plate 57 is fixedly installed with a positioning block 58, the inner part of the mounting groove 55 is fixedly sleeved with a second limiting ring 59, the inner circular wall surface of the second limiting ring 59 is movably sleeved with the positioning block 58, the top surfaces of the plurality of connecting blocks 35 are provided with positioning holes 36, the inner wall surface of the positioning holes 36 is movably sleeved with the positioning block 58, A plurality of fixed magnets 64 are fixedly installed inside the mounting plate 1. When the connecting block 35 is rotated out of the mounting plate 1, the rebound force of the plurality of fourth springs 56 will cause the plurality of positioning blocks 58 to enter the interior of the positioning holes 36, thereby limiting and fixing them to prevent the mounting tube 2 from being displaced during use. At the same time, when the connecting block 35 is retracted into the interior of the mounting plate 1, the fixed magnet 64 will magnetically fix the connecting block 35, thereby preventing the plurality of mounting tubes 2 from rotating arbitrarily and being damaged during transportation of the mounting plate 1.

[0027] Embodiment 3: Based on the above embodiment 1 or 2, refer to Figure 2 , Figure 3 and Figure 4 , a dust cover 24 is fixedly installed on the inner bottom surface and the inner bottom surface of several mounting disks 1, and one side of the dust cover 24 is fixedly installed on the outer wall surface of the connecting seat 20 to prevent dust and foreign matter from entering the interior of the mounting box 18 and causing jamming. A cleaning knife ring 31 is detachably installed inside several mounting tubes 2, which is convenient for scraping the soil on the surface when the fixed cone 30 is retracted into the interior of the mounting tube 2. A positioning tube 8 is fixedly installed on the top surface of the mounting disk 1, and the inner circular wall surface of the positioning tube 8 is movably sleeved with the transmission screw 11, and the outer circular wall surface of the positioning tube 8 is movably sleeved with a protective sleeve 9, and the outer circular wall surface of the protective sleeve 9 is threadedly connected with a first threaded fixing sleeve 10, which is convenient for protecting the transmission screw 11 when it is in use.

[0028] Embodiment 4: Based on the above embodiments 1, 2 or 3, refer to Figure 7 and Fig.10 The interiors of several first mounting caps 60 are all fixedly sleeved with second sealing rings 63, and the inner circumferential wall surface of the second sealing ring 63 is movably sleeved with the second connecting column 62 to prevent soil from entering the interior of the first mounting cap 60 and affecting its use. The outer circumferential wall surfaces of several connecting blocks 35 are all fixedly sleeved with anti-skid sleeves 37 to prevent the staff from slipping when using the connecting blocks 35 and affecting its use effect. The surfaces of several sealing plates 38, several first soil guide covers 41 and several second soil guide covers 49 are all coated with wear-resistant coatings to facilitate improving the service life of the sealing plates 38, the first soil guide covers 41 and the second soil guide covers 49.

[0029] Working principle: Please refer to Figure 1-Figure 10As shown, when in use, the staff screws the transmission screw 11 of the corresponding length into the interior of the connecting tube 13 according to the sampling depth, and then with the threaded transmission action of the transmission screw 11 and the connecting tube 13, the transmission screw 11 continues to move downward into the installation sleeve 25 inside the second fixing frame 19, and pushes the installation sleeve 25 to drive the second fixing frame 19 to move downward to move it out of the interior of the mounting disk 1. During this process, multiple first springs 23 will be squeezed. After the above steps are completed, the staff connects and fixes the transmission screw 11 and the installation sleeve 25 through the threaded fixing cap 27 and the collet 26, and then the staff sets the corresponding multiple sampling covers 4 on the outside of the rotating shaft 3 through the positioning sleeve 50 according to the sampling depth. At this time, the staff can use the second The screw fixing sleeve 51 fixes the positioning sleeve 50 and the sampling cover 4 to the outside of the rotating shaft 3, and then the staff inserts the rotating shaft 3 into the inside of the mounting sleeve 25 at the bottom of the second fixing frame 19, and fixes it again through the collet 26 and the threaded fixing cap 27, so as to complete the assembly of the transmission screw 11 and the rotating shaft 3. After the above steps are completed, the staff drives the active pulley 15 to rotate through the driving motor 7, and then under the belt transmission action of the active pulley 15 and the transmission belt 16, the driven pulley 14 will drive the connecting pipe 13 to reverse, and then under the threaded transmission action of the connecting pipe 13 and the transmission screw 11, the transmission screw 11 will move upward to complete the reset. At this time, the staff will turn out multiple connecting blocks 35 from the inside of the mounting disk 1, and then multiple The baffle 17 will limit the multiple connecting blocks 35, and the multiple installation tubes 2 will rotate out of the bottom of the installation disk 1. Then the staff can step on the multiple pedals 33 outside the multiple fixing cones 30 to make the multiple fixing cones 30 extend from the inside of the installation tube 2 and insert into the soil, so as to complete the placement of the installation disk 1. After the above steps are completed, the staff uses the driving motor 7, and the driving shaft of the driving motor 7 rotates to rotate the transmission screw 11 and drive the second fixing frame 19 and the rotating shaft 3 to move downward, and then the earth-breaking drill bit 5 at the bottom of the rotating shaft 3 rotates and moves downward to break the surface of the frozen soil. At this time, under the action of centrifugal force, the multiple sealing plates 38 on the surface of the multiple sampling covers 4 will open, and then the rotation of the sealing plates 38 will drive the second connecting column 6 2 squeezes the return spring 61, and then the soil drilled by the earth-breaking drill bit 5 will accumulate on the top through its spiral chip removal groove. At this time, the scrapers 40 inside the two sealing plates 38 will scrape the soil and make it enter the interior of the sampling cover 4, and then the weight of the interior of the sampling cover 4 will gradually increase due to the accumulation of soil, and then the rubber sealing cover 45 squeezed by the soil will move downward and drive the sleeve 46 to make the multiple first connecting columns 53 squeeze the multiple third springs 52. At the same time, the downward movement of the sleeve 46 will drive the two steel wires 47 to pull the two sealing plates 38. At this time, under the action of the rebound force of the two steel wires 47 and the return spring 61, the two sealing plates 38 will reset to their initial positions, and then as the soil continues to accumulate on the top of the earth-breaking drill bit 5,The two second soil guide covers 49 on the surface of the sampling cover 4 and the first soil guide covers 41 on the surfaces of the two sealing plates 38 will guide the accumulated soil, so that the soil is continuously lifted upward along the spiral involute grooves on the surface. At this time, the sampling cover 4 located above will repeat the above steps to collect the soil. In this process, since the soil will be sealed and collected inside the sampling cover 4 when drilling to a certain depth, the soil layer can be prevented from flowing into layers during sampling. At the same time, since the multiple sampling covers 4 are independent individuals, the effect of multi-level stratified sampling can be achieved during sampling.

[0030] 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 multi-level stratified frozen soil sampling device, characterized in that: include: A mounting plate (1), wherein a plurality of mounting tubes (2) are arranged inside the mounting plate (1), a rotating shaft (3) is arranged inside the mounting plate (1), a soil-breaking drill bit (5) is detachably mounted on the bottom surface of the rotating shaft (3), and a plurality of sampling covers (4) are arranged on the outer circular wall surface of the rotating shaft (3); A plurality of connection blocks (35), wherein the plurality of connection blocks (35) are rotatably connected to the interior of the mounting plate (1); a plurality of baffles (17) are fixedly installed inside the mounting plate (1); the position of the baffles (17) corresponds to the position of the connection blocks (35); the bottom surface of the connection blocks (35) is fixedly installed with the mounting tube (2); a sliding rod (28) is movably sleeved inside the mounting tube (2); a second spring (29) is movably sleeved on the outer circular wall surface of the sliding rod (28); a first limiting ring (34) is fixedly sleeved inside the mounting tube (2); the inner wall surface of the first limiting ring (34) is movably sleeved with the sliding rod (28); a fixing cone (30) is fixedly installed on the bottom surface of the sliding rod (28); the first limiting ring (34) is fixedly installed on the outer circular wall surface of the fixing cone (30); and a plurality of positioning grooves (32) are provided on the outer circular wall surface of the mounting tube (2); a first fixing frame (12), wherein the first fixing frame (12) is fixedly mounted inside the mounting disk (1), a connecting pipe (13) is rotatably connected inside the first fixing frame (12), a transmission screw (11) is internally threadedly connected to the connecting pipe (13), a driven pulley (14) is fixedly sleeved on the outer circumferential wall surface of the connecting pipe (13), a protective cover (6) is fixedly mounted on the top surface of the mounting disk (1), a driving motor (7) is fixedly mounted on the top surface of the protective cover (6), a driving shaft of the driving motor (7) passes through the inside of the protective cover (6), a driving pulley (15) is fixedly sleeved on the outer circumferential wall surface of the driving shaft of the driving motor (7), a transmission belt (16) is provided between the driving pulley (15) and the driven pulley (14), and the driven pulley (14) and the driving pulley (15) are connected in a belt transmission manner via the transmission belt (16); A plurality of mounting boxes (18), wherein the plurality of mounting boxes (18) are fixedly mounted inside the mounting plate (1), a second fixing frame (19) is arranged between the plurality of mounting boxes (18), a positioning rod (21) is fixedly mounted inside the second fixing frame (19), an outer circular wall surface of the positioning rod (21) is fixedly sleeved with a limiting tube (22), an outer circular wall surface of the positioning rod (21) is movably sleeved with a connecting seat (20), an outer circular wall surface of the positioning rod (21) is movably sleeved with a first spring (23), one side of the plurality of connecting seats (20) is respectively fixedly mounted with the outer wall surface of the second fixing frame (19), an inner bottom surface and a bottom surface of the second fixing frame (19) are rotatably connected with a mounting sleeve (25), an inner movably sleeved with a collet (26), and an outer circular wall surface of the mounting sleeve (25) is threadedly connected with a threaded fixing cap (27); The interior of a plurality of the sampling covers (4) is rotatably connected to two sealing plates (38), the two sealing plates (38) are arranged at intervals, the outer circular wall surfaces of a plurality of the sealing plates (38) are fixedly installed with a first soil guide cover (41), the outer circular wall surfaces of a plurality of the sampling covers (4) are fixedly installed with two second soil guide covers (49), the bottom surfaces of a plurality of the sampling covers (4) are fixedly installed with a positioning sleeve (50), the outer circular wall surface of the positioning sleeve (50) is threadedly connected with a second screw fixing sleeve (51), the inner circular wall surface of the positioning sleeve (50) is movably sleeved with the rotating shaft (3), the interior of a plurality of the sampling covers (4) is detachably installed with a fixing plate (48), the interior of a plurality of the sampling covers (4) is provided with a sleeve (46), the inner circular wall surface of the sleeve (46) is rotatably sleeved with the rotating shaft (3), The shaft (3) is movably sleeved, a rubber sealing cover (45) is fixedly installed on the bottom surface of the sleeve (46), a fixing ring (43) is fixedly installed on the inner bottom surface of the sampling cover (4), the top surface of the fixing ring (43) is fixedly installed with the rubber sealing cover (45), a plurality of second mounting caps (44) are fixedly installed inside the sampling cover (4), a third spring (52) is movably sleeved inside the second mounting cap (44), a first connecting column (53) is movably sleeved inside the second mounting cap (44), a first sealing ring (54) is fixedly sleeved inside the second mounting cap (44), an inner circular wall surface of the first sealing ring (54) is movably sleeved with the first connecting column (53), and the top surface of the first connecting column (53) is fixedly installed with the sleeve (46); Two steel wires (47) are fixedly installed on the inner bottom surfaces of a plurality of the sleeves (46), one end of the steel wires (47) is fixedly installed on the inner circular wall surface of the sealing plate (38), a plurality of mounting frames (42) are fixedly installed on the outer circular wall surface of the sampling cover (4), and every two mounting frames (42) and one sealing plate (38) form a group, a first mounting cap (60) is fixedly sleeved inside the mounting frame (42), a return spring (61) is movably sleeved inside the first mounting cap (60), a second connecting column (62) is movably sleeved inside the first mounting cap (60), and one end of the second connecting column (62) is fixedly installed on the inner circular wall surfaces of a plurality of the sealing plates (38), and a counterweight bar (39) is fixedly installed on the outer circular wall surfaces of a plurality of the sealing plates (38).

2. A multi-level stratified frozen soil sampling device according to claim 1, characterized in that: The inner bottom surface and the inner top surface of the mounting plate (1) are both provided with a plurality of mounting grooves (55), a fourth spring (56) is movably sleeved inside the mounting groove (55), a pressure plate (57) is movably sleeved inside the mounting groove (55), a positioning block (58) is fixedly mounted on the top surface of the pressure plate (57), a second limiting ring (59) is fixedly sleeved inside the mounting groove (55), an inner circular wall surface of the second limiting ring (59) is movably sleeved with the positioning block (58), a plurality of positioning holes (36) are provided on the top surfaces of the plurality of connecting blocks (35), an inner wall surface of the positioning hole (36) is movably sleeved with the positioning block (58), and a plurality of fixed magnets (64) are fixedly mounted inside the mounting plate (1).

3. A multi-stage stratified frozen soil sampling device according to claim 1, characterized in that: A dust cover (24) is fixedly mounted on the inner bottom surface and the inner bottom surface of a plurality of the mounting plates (1), and one side of the dust cover (24) is fixedly mounted on the outer wall surface of the connecting seat (20).

4. The multi-level stratified frozen soil sampling device according to claim 1, characterized in that: A cleaning knife ring (31) is detachably mounted inside a plurality of the installation tubes (2).

5. The multi-level stratified frozen soil sampling device according to claim 1, characterized in that: A positioning tube (8) is fixedly mounted on the top surface of the mounting plate (1); the inner circumferential wall surface of the positioning tube (8) is movably sleeved with the transmission screw (11); the outer circumferential wall surface of the positioning tube (8) is movably sleeved with a protective sleeve (9); and the outer circumferential wall surface of the protective sleeve (9) is threadedly connected with a first threaded fixing sleeve (10).

6. The multi-level stratified frozen soil sampling device according to claim 1, characterized in that: A second sealing ring (63) is fixedly sleeved inside a plurality of the first mounting caps (60), and an inner circular wall surface of the second sealing ring (63) is movably sleeved with the second connecting column (62).

7. The multi-level stratified frozen soil sampling device according to claim 1, characterized in that: The outer circumferential wall surfaces of the plurality of connecting blocks (35) are all fixedly sleeved with anti-slip sleeves (37).

8. The multi-level stratified frozen soil sampling device according to claim 1, characterized in that: The surfaces of the plurality of sealing plates (38), the plurality of the first soil guiding covers (41) and the plurality of the second soil guiding covers (49) are all coated with a wear-resistant coating.

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