Layered sampling equipment for bulk samples of peat ash deposits

Abstract

The invention discloses a block sample stratified sampling device for peat layer volcanic ash sediments, relates to the technical field of peat layer volcanic ash sediment sample acquisition, and is used to solve the problem that the drilling depth is limited and repeated drilling in multiple regions is required to obtain various peat layer volcanic ash sediment samples; the invention drives a transmission tooth one to rotate through a motor one, realizes the rotation of multiple groups of transmission teeth two located in a shell, realizes the rotation of a gear cylinder, and thus facilitates the rotary cutting of deep solid rocks, cooperates with the rotation of the upper motor two to push the cylinder out, and the unfolded expansion piece pushes the gear cylinder to move outward, and drives the gear cylinder to rotate during the rising work of the deformation column, presses and breaks the sample drilled in the gear cylinder, and retains the sample in the gear cylinder, avoiding the risk of the sample falling out of the cylinder due to the straight-in and straight-out gear cylinder, and by using the three groups of gear cylinders working at different positions, it is possible to continuously obtain peat layer volcanic ash sediment samples of different depths in a single drilling.

Description

Technical Field

[0001] The invention relates to the technical field of obtaining samples of peat layer volcanic ash sediments, and in particular to a block sample stratified sampling device for peat layer volcanic ash sediments. Background Art

[0002] Volcanic ash chronology is the most direct means to compare sedimentary strata in different environments and establish a time stratigraphic framework, and has been widely used in various studies such as paleoenvironment, paleoclimate and archaeology. Volcanic ash layers not only preserve the impact of volcanic eruptions on climate and environment, but are also important isotope dating and isochronous marker layers. Volcanic ash layer dating and stratigraphic comparison studies are prerequisites for establishing a reliable stratigraphic division framework and many geological studies. With the rapid development of various isotope dating techniques, the precise age of volcanic ash has developed rapidly and has become an important basis for determining the occurrence of key geological events. The accuracy of dating can be greatly increased by comparing and verifying the dating results of different methods.

[0003] The acquisition of volcanic ash deposits is often done by manual sampling, which is difficult and has a limited sampling depth. The acquisition of volcanic ash deposits at different depths requires repeated drilling, which reduces the efficiency of obtaining volcanic ash deposits. In addition, the hole sampling samples are relatively single, and a single drilling device is needed to achieve layered sampling of volcanic ash deposits, shorten the sample acquisition time and obtain as many samples as possible.

[0004] To this end, we propose a stratified sampling device for bulk samples of peat-layer volcanic ash deposits. Summary of the invention

[0005] The object of the present invention is to provide a block sample stratified sampling device for peat layer volcanic ash sediments, so as to solve the problem that the drilling depth is limited and repeated drilling in multiple regions is required to obtain various peat layer volcanic ash sediment samples;

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The block sample stratified sampling equipment for peat layer volcanic ash sediments comprises a frame, a control box, a drainage box and a storage box, wherein the control box is fixed to the top of the frame by bolts, and a drainage box is connected to one side of the control box, and a storage box is installed on the other side of the control box, and the device is characterized in that a hydraulic cylinder is fixed to the top of the control box by bolts, and a movable box is passed through the control box and fixed by bolts at the bottom of the hydraulic cylinder, a drill barrel is installed at the bottom of the movable box, and a drilling mechanism is installed at the bottom of the drill barrel;

[0008] The drilling mechanism includes a shell, a drill bit, a gear cylinder, a storage groove and a deformation column. The shell is installed at the bottom of the drill cylinder, and the drill bit is installed at the bottom of the shell. Storage grooves are evenly and symmetrically opened in the shell, and a transmission tooth 2 is movably connected to one side of the storage groove through a bearing. A gear cylinder is slidably connected in the storage groove, and one end of the gear cylinder penetrates the transmission tooth 2 and is slidably engaged with the transmission tooth 2. A spring 1 is sleeved and installed on one side of the transmission tooth 2 of the gear cylinder. A motor 1 is installed in the shell and at the bottom of the transmission tooth 2. The output end of the motor 1 is fixedly connected with the transmission tooth 1, and the transmission tooth 2 is meshed with the transmission tooth 1 accordingly. A deformation column is installed in the shell and at one side of the gear cylinder, and one side of the gear cylinder abuts against the deformation column.

[0009] Furthermore, the outer wall of the deformation column is evenly rotated and connected with an expansion piece, a tensioning rope is installed on the top of the deformation column, and a second motor is installed in the deformation column and on one side of the expansion piece. A rotating drum is fixedly connected to the output end of the second motor, and an arc groove is opened on the rotating drum. A resist cylinder is installed in the rotating drum, and a protrusion at the top of the resist cylinder passes through the arc groove and abuts against the inner wall of the deformation column.

[0010] Furthermore, the bottom inner wall of the movable box is movably connected to a movable cover through a bearing, and spherical clamping columns are symmetrically slidably connected on both sides of the movable cover, the spherical clamping columns are located on the outer side of the movable cover and are sleeved with spring 2, the bottom inner wall of the movable box and the outer wall of the spherical clamping columns are symmetrically slidably connected to a limiting arc plate, the outer walls of both sides of the movable box are symmetrically installed with abutment rods, and one end of the abutment rods passes through the movable box and is fixed to the outer wall of the limiting arc plate, a limiting hole is provided on the abutment rod, and a limiting bolt is symmetrically installed on the outer wall of the movable box, and one end of the limiting bolt is abutted against the limiting hole.

[0011] Furthermore, a motor three is fixed to an inner wall of one side of the movable box by bolts, and a transmission tooth four is fixed on the output end of the motor three, a transmission tooth three is fixedly connected to the top of the movable cover, and the transmission tooth three at the top of the movable cover is meshed with the transmission tooth four on the motor three, and a winding roller is fixedly connected to the top inner wall of the movable box.

[0012] Furthermore, a clamping groove is symmetrically provided on the top outer wall of the drill tube and the top, and locking columns are symmetrically fixed on both sides of the bottom of the drill tube by spot welding.

[0013] Furthermore, drill tubes are evenly placed in the storage box, and a drainage pipe is installed at the bottom of the drainage box.

[0014] The stratified sampling method for bulk samples of the peat layer volcanic ash deposits is:

[0015] The carriage is pushed to move to the sampling area, and the motor three in the movable box is started. The rotation of the transmission gear four drives the drill tube to rotate. At the same time, the hydraulic cylinder pushes the movable box downward, and the valve at the end of the drainage pipe is opened when the drill bit touches the ground;

[0016] When the movable box moves to the bottom position in the control box, the motor three is turned off and the limit bolt on one side of the movable box is pulled out at the same time. At this time, the push rod is expanded under the push of the spring two, and the cylinder drives the movable box to move upward. At this time, the bottom of the drill tube in the storage box is inserted into the top slot of the buried drill tube, and then the side slot on the top of the drill tube is aligned with the spherical clamping column, and the push rod on the outside of the movable box is squeezed inward, so that the push rod pushes the spherical clamping column to engage with the outer slot of the new drill tube. At this time, the limit bolt is fixed to the limit hole, and the cylinder and motor three are restarted. Repeat the installation of the drill tube until the bottom drill bit reaches the specified depth;

[0017] At this time, the motor 1 in the shell is started, and the transmission gear 2 is driven to rotate through the operation of the motor 1, thereby realizing the rotation of the gear cylinder in the shell. At the same time, the rotation of the motor 2 will drive the resistance cylinder in the rotating cylinder to rotate out, thereby expanding the expansion piece installed on the side wall of the deformation column. When the expansion piece is expanded, it abuts against one side of the gear cylinder, thereby pushing the rotating gear cylinder out of the shell. After the end of the gear cylinder contacts the sample collection area, the sample collection cover is taken off, and the tension rope is pulled by the rotating winding roller, thereby driving the entire deformation column to rise, causing the entire gear cylinder to rotate, thereby breaking the collection sample in the gear cylinder, and when the resistance cylinder shrinks, the spring 1 pushes the gear cylinder to shrink into the shell, and the remaining sample begins to be collected after the entire drill bit continues to move down to the specified position.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, multiple sets of drill tubes are arranged, and the card slots on the top of the drill tubes are connected to the spherical card columns arranged at the bottom of the movable box, and the top hydraulic cylinder is used to push the movable box, and the motor in the movable box is used to drive the transmission gear 4 to rotate, so as to realize the embedding of the drill bit with controllable depth, and realize the acquisition of multi-level samples of volcanic ash sediments in the peat layer. Compared with the drilling sampling equipment with fixed depth, the types of collected samples are limited;

[0020] 2. In the present invention, the transmission gear 1 is driven to rotate by the motor 1, so that the multiple transmission gears 2 located in the shell are rotated, and the gear cylinder is driven to rotate at the same time, so that the gear cylinder is rotated to facilitate the rotary cutting of deep solid rocks. The rotation of the motor 2 pushes the cylinder out, and the unfolded expansion piece pushes the gear cylinder to move outward to obtain the peat layer volcanic ash sediment samples. During the rising work of the deformed column, the gear cylinder is driven to rotate, and the samples drilled in the gear cylinder are pressed and broken, and the samples are retained in the gear cylinder, so as to avoid the risk of samples falling out of the gear cylinder when the gear cylinder goes in and out directly. By using the three groups of gear cylinders working at different positions, the peat layer volcanic ash sediment samples of different depths in a single drilling can be continuously obtained, thereby improving the sample acquisition efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a block sample stratified sampling device for peat layer volcanic ash sediments of the present invention;

[0022] Figure 2 It is a schematic diagram of the connection structure between the movable box and the drill tube of the present invention;

[0023] Figure 3 For the present invention Figure 1 A schematic diagram of the structure at A;

[0024] Figure 4 It is a schematic diagram of the connection structure between the gear cylinder in the housing and the storage groove of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure between the motor 1 and the transmission gear 1 in the housing of the present invention;

[0026] Figure 6 It is a schematic diagram of the deformable column connection expansion piece structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure between the upper rotating drum and the abutting drum of the motor 2 of the present invention;

[0028] Figure 8 It is a schematic diagram of sampling the gear cylinder of the present invention.

[0029] In the figure: 1. frame; 2. control box; 3. drainage box; 4. storage box; 5. hydraulic cylinder; 6. movable box; 7. drilling mechanism; 701. shell; 702. drill bit; 703. transmission gear one; 704. motor one; 705. storage slot; 706. transmission gear two; 707. gear cylinder; 708. spring one; 709. deformation column; 8. expansion piece; 9. tension rope; 10. motor two; 11. rotating drum; 12. arc groove; 13. push cylinder; 14. motor three; 15. transmission gear three; 16. movable cover; 17. spherical clamping column; 18. spring two; 19. limit arc plate; 20. push rod; 21. limit hole; 22. limit bolt; 23. coiling roller; 24. clamping slot; 25. locking column; 26. drill cylinder; 27. drainage pipe; 28. transmission gear four. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-8 , the present invention provides a technical solution:

[0032] Embodiment 1:

[0033] When obtaining block samples of volcanic ash deposits in the peat layer, the collection area and collection depth are determined after geological exploration scanning. After a complete collection plan is formulated, the entire frame 1 is moved to the collection area, and the drill tube 26 is prepared in advance and placed in the storage box 4 according to the depth of the collected sample. Since the initial drill tube 26 is installed with a line, the line is centrally bound and then passes through the drill tube 26 to be installed in turn, and is connected to the controller on the control box 2, such as Figure 1 As shown, a hydraulic cylinder 5 is installed on the top of the entire control box 2, and one end of the hydraulic cylinder 5 is connected to the movable box 6 in the control box 2, the entire drill tube 26 is installed at the bottom of the movable box 6, and a drilling mechanism 7 is installed at the bottom of the initial drill tube 26;

[0034] like Figure 3 As shown, the entire drilling mechanism 7 is divided into two layers. The top area of ​​the shell 701 is used for obtaining and storing geological samples, and the bottom area is responsible for geological drilling. The broken stones and debris in the drilling process are discharged through the rotary blades located on the surface of the drill tube 26. Figure 4As shown, a storage slot 705 is provided in the housing 701, and a gear cylinder 707 is slidably connected in the storage slot 705. The outer end of the gear cylinder 707 is provided with a drilling pattern, and the middle part is hollow, which is responsible for obtaining block samples, and the inner end of the gear cylinder 707 penetrates the inner wall of the housing 701 and is movably connected to the second transmission tooth 706. Two protrusions on the outer wall of the gear cylinder 707 are engaged with the inner wall notches of the second transmission tooth 706, so that the entire gear cylinder 707 can rotate after the second transmission tooth 706 rotates. Figure 5 As shown, a motor 1 704 is installed at the bottom of the housing 701, and a transmission tooth 1 703 is fixed on the output end of the motor 1 704. The rotation of the transmission tooth 1 703 can realize the rotation of the three transmission teeth 2 706, thereby driving the entire gear cylinder 707 to rotate in the storage slot 705. When the protrusions of the gear cylinder 707 are at the upper and lower sides, there is a gap between the notches of the transmission teeth 2 706, so that there is a movable gap in the entire gear cylinder 707, which is convenient for the block sample stuck in the gear cylinder 707 to be crushed off under the upward operation of the deformation column 709 in the later stage, so that the block sample is stored inside the gear cylinder 707 and is pushed by the spring 1 708 to re-enter the housing 701;

[0035] As for the introduction of the entire gear cylinder 707, Figure 4 As shown, the top of the transmission tooth 703 in the housing 701 is slidably connected with a deformation column 709. Figure 6 As shown, the outer wall of the entire deformation column 709 rotates evenly with three expansion pieces 8, and a motor 2 10 is installed in the deformation column 709. The abutment cylinder 13 at the end of the motor 2 10 abuts against the inner wall of the expansion piece 8, and the three expansion pieces 8 abut against the end of the gear cylinder 707 correspondingly. When the transmission tooth 1 703 rotates to drive the gear cylinder 707 on the transmission tooth 2 706 to rotate, the motor 2 10 is started at this time, as shown in FIG. Figure 7 As shown, a rotating drum 11 is fixedly connected to the output end of the motor 2 10, and an arc groove 12 is opened on the outer wall of the rotating drum 11. At the same time, a resisting cylinder 13 is slidably connected inside the rotating drum 11. The outer protruding part of the resisting cylinder 13 passes through the arc groove 12 and is clamped with the linear groove on the top inner wall of the deformation column 709, so that the resisting cylinder 13 can be pushed out by rotating the arc groove 12 on the rotating drum 11. When the resisting cylinder 13 contacts the inner side of the spreading sheet 8, the spreading sheet 8 is unfolded, and the gear cylinder 707 is pushed out. In conjunction with the rotation of the gear cylinder 707, drilling begins to obtain block samples of volcanic ash deposits in the peat layer, as shown in FIG. Figure 8As shown, the straight-in and straight-out drill tube 26 is prone to cause the drilling sample to fall off. At this time, the winding roller 23 located in the movable box 6 is started, and the winding roller 23 pulls the deformation column 709 to move upward as a whole through the tension rope 9. Similarly, the gear cylinder 707 begins to rotate in the storage groove 705 after being pulled up by the expansion sheet 8, thereby breaking the acquired sample and successfully storing the sample in the gear cylinder 707. Since the three motors 10 on the entire deformation column 709 can be controlled separately, that is, when the entire shell 701 moves to the first collection position, the gear cylinder 707 on one side can be controlled to work to obtain the sample, and then the drill bit 702 at the bottom of the shell 701 moves downward to achieve another depth sample acquisition, so that a single acquisition can obtain three geological samples of peat layer volcanic ash deposits. Compared with a single acquisition of a single sample, the overall acquisition efficiency is improved and a more comprehensive sample is provided for later position research.

[0036] Embodiment 2:

[0037] Since the height of a single drill tube 26 is relatively fixed, after a single drill tube 26 enters the geological layer, it is necessary to manually add the drill tube 26. In the initial state, the drill tube 26 with the drilling mechanism 7 is installed at the bottom of the movable box 6. Figure 2 As shown, the top of the side wall and both sides of the top of the entire drill tube 26 are provided with a card slot 24, the entire card slot 24 is an arc slot with a large aperture in the middle and small apertures on both sides, the inner wall at the bottom of the movable box 6 is movably connected with a movable cover 16 through a bearing, and a transmission tooth three 15 is fixed on the top of the movable cover 16, the transmission tooth three 15 is meshed and connected with the transmission tooth four 28 at the end of the motor three 14 on the inner wall of the movable box 6, so that the entire movable cover 16 is driven to rotate under the rotation of the motor three 14, and a spherical card column 17 is symmetrically slidably connected on the movable cover 16, and a spring two 18 is also sleeved and fixed on the spherical card column 17, and a limited arc plate 19 is symmetrically slidably connected on the outer side of the spherical card column 17, and a push rod 20 connected to the limit arc plate 19 penetrates the movable box 6 and is slidably connected to the movable box 6, and a limit hole 21 is provided on the entire push rod 20, and a limit bolt 22 is installed on the outer side of the movable box 6;

[0038] The two ends of the spherical clamping column 17 are aligned with the middle of the side clamping groove 24 of the drill tube 26 by pressing the push rod 20 inward, so that the ends of the spherical clamping column 17 enter the side clamping groove 24 of the drill tube 26. At this time, the limit bolt 22 on the movable box 6 is pressed into the limit hole 21 on the push rod 20 to complete the fixing of the two side limit arc plates 19. Due to the abutment of the entire spherical clamping column 17, the rotation of the entire drill tube 26 is realized under the rotation of the transmission gear 3 15. When the entire movable box 6 continuously drives the drill tube 26 to move downward, it is necessary to install a new drill tube 26 to the top of the drill tube 26 below the ground. Two locking columns 25 are symmetrically fixed to the bottom of the drill tube 26, which are also used to be installed in the clamping groove 24 at the top of the drill tube 26.

[0039] In order to improve the diving efficiency of the entire drill barrel 26 when it is working, a hydraulic cylinder 5 is installed on the top of the entire control box 2. The hydraulic cylinder 5 generates a thrust to act on the movable box 6, and then acts on the drill barrel 26 through the movable box 6, so as to achieve efficient diving of the entire drill barrel 26 and facilitate the drilling of the drill bit 702. A drainage box 3 is also installed on the entire frame 1 to continuously drain water to the borehole. A drainage pipe 27 connected to the bottom of the drainage box 3 introduces the water flow in the drainage box 3 into the drilling area. For the drill barrel 26 that has been drilled, the surface of the drill barrel 26 that has successfully appeared on the ground is cleaned. At the same time, after the bottom drill barrel 26 is unearthed, the block samples of volcanic ash sediments in the peat layer at different depths collected in the gear barrel 707 are taken out.

[0040] Working principle of the present invention:

[0041] Push the frame 1 to move to the sampling area, start the motor 3 14 in the movable box 6, and drive the drill tube 26 to rotate through the rotation of the transmission gear 4 28. At the same time, the hydraulic cylinder 5 pushes the movable box 6 to move downward, and opens the valve at the end of the drainage pipe 27 when the drill bit 702 touches the ground;

[0042] When the movable box 6 moves to the bottom position in the control box 2, the motor 3 14 is turned off, and the limit bolt 22 on one side of the movable box 6 is pulled out. At this time, the push rod 20 is unfolded under the push of the spring 2 18, and the cylinder drives the movable box 6 to move upward. At this time, the bottom of the drill tube 26 in the storage box 4 is inserted into the top groove 24 of the buried drill tube 26, and then the top side groove 24 of the drill tube 26 is aligned with the spherical clamping column 17, and the outer push rod 20 of the movable box 6 is squeezed inward, so that the push rod 20 pushes the spherical clamping column 17 to engage with the outer groove 24 of the new drill tube 26. At this time, the limit bolt 22 is fixed to the limit hole 21, and the cylinder and the motor 3 14 are restarted, and the installation of the drill tube 26 is repeated until the bottom drill bit 702 reaches the specified depth;

[0043] At this time, the motor 1 704 in the shell 701 is started, and the transmission gear 2 706 is driven to rotate through the operation of the motor 1 704, thereby realizing the rotation of the gear cylinder 707 in the shell 701. At the same time, the rotation of the motor 2 10 will drive the cylinder 13 in the rotating cylinder 11 to rotate out, thereby expanding the expansion piece 8 installed on the side wall of the deformation column 709. When the expansion piece 8 is expanded, it abuts against one side of the gear cylinder 707, thereby pushing the rotating gear cylinder 707 out of the shell 701. After the end of the gear cylinder 707 contacts the sample collection area, the sample collection cover is taken off, and the tension rope 9 is pulled by the rotating winding roller 23, thereby driving the entire deformation column 709 to rise, thereby causing the entire gear cylinder 707 to rotate, thereby breaking the sample collected in the gear cylinder 707, and when the cylinder 13 shrinks, the spring 1 708 pushes the gear cylinder 707 to shrink into the shell 701, and the remaining sample begins to be collected after the entire drill bit 702 continues to move down to the specified position.

[0044] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A stratified sampling device for block samples of peat layer volcanic ash sediments, comprising a frame (1), a control box (2), a drainage box (3) and a storage box (4), wherein the top of the frame (1) is fixed with a control box (2) by bolts, and one side of the control box (2) is connected with the drainage box (3), and the other side of the control box (2) is installed with a storage box (4), characterized in that: A hydraulic cylinder (5) is fixed to the top of the control box (2) by bolts, and a movable box (6) is located at the bottom of the hydraulic cylinder (5) and penetrates the control box (2) and is fixed by bolts, a drill tube (26) is installed at the bottom of the movable box (6), and a drilling mechanism (7) is installed at the bottom of the drill tube (26); The drilling mechanism (7) comprises a housing (701), a drill bit (702), a gear cylinder (707), a storage slot (705) and a deformation column (709); the housing (701) is installed at the bottom of the drill cylinder (26), and the drill bit (702) is installed at the bottom of the housing (701); the housing (701) is evenly and symmetrically provided with storage slots (705), and a second transmission tooth (706) is movably connected to one side of the storage slot (705) via a bearing; a gear cylinder (707) is slidably connected to the storage slot (705), and one end of the gear cylinder (707) penetrates the second transmission tooth (706). and is slidably engaged with the second transmission tooth (706); the gear cylinder (707) is sleeved with a spring (708) on one side of the second transmission tooth (706); a motor (704) is installed in the housing (701) and at the bottom of the second transmission tooth (706); the output end of the motor (704) is fixedly connected with the first transmission tooth (703); the second transmission tooth (706) is meshedly connected with the first transmission tooth (703); a deformation column (709) is installed in the housing (701) and at one side of the gear cylinder (707); one side of the gear cylinder (707) is in contact with the deformation column (709); The bottom inner wall of the movable box (6) is movably connected to a movable cover (16) via a bearing, and spherical clamping columns (17) are symmetrically slidably connected to both sides of the movable cover (16); A motor three (14) is fixed to an inner wall of one side of the movable box (6) by means of bolts, and a transmission tooth four (28) is fixed to the output end of the motor three (14); a transmission tooth three (15) is fixedly connected to the top of the movable cover (16), and the transmission tooth three (15) at the top of the movable cover (16) is meshedly connected to the transmission tooth four (28) on the motor three (14); and a coiling roller (23) is fixedly connected to the inner wall of the top of the movable box (6).

2. The block sample stratified sampling device for peat layer volcanic ash sediments according to claim 1 is characterized in that: The outer wall of the deformation column (709) is evenly rotatably connected to a spreading piece (8), a tension rope (9) is installed on the top of the deformation column (709), a second motor (10) is installed in the deformation column (709) and on one side of the spreading piece (8), a rotating drum (11) is fixedly connected to the output end of the second motor (10), and an arc-shaped groove (12) is provided on the rotating drum (11), a resisting drum (13) is installed in the rotating drum (11), and a protrusion on the top of the resisting drum (13) passes through the arc-shaped groove (12) and contacts the inner wall of the deformation column (709).

3. The block sample stratified sampling device for peat layer volcanic ash sediments according to claim 2, characterized in that: The spherical clamping column (17) is located on the outer side of the movable cover (16) and is sleeved with a second spring (18). The inner wall of the bottom of the movable box (6) and the outer wall of the spherical clamping column (17) are symmetrically slidably connected to the limit arc plate (19). The outer walls of both sides of the movable box (6) are symmetrically installed with abutment rods (20), and one end of the abutment rod (20) penetrates the movable box (6) and is fixed to the outer wall of the limit arc plate (19). The abutment rod (20) is provided with a limit hole (21). The outer wall of the movable box (6) is symmetrically installed with a limit bolt (22), and one end of the limit bolt (22) is in contact with the limit hole (21).

4. The block sample stratified sampling device for peat layer volcanic ash sediments according to claim 3, characterized in that: The top outer wall of the drill tube (26) is provided with a clamping groove (24) symmetrically with the top, and locking columns (25) are symmetrically fixed to both sides of the bottom of the drill tube (26) by spot welding.

5. The block sample stratified sampling device for peat layer volcanic ash sediments according to claim 4, characterized in that: Drill tubes (26) are evenly placed in the storage box (4), and a drainage pipe (27) is installed at the bottom of the drainage box (3).

6. The block sample stratified sampling device for peat layer volcanic ash sediments according to claim 5, characterized in that: The stratified sampling method for bulk samples of the peat layer volcanic ash deposits is: The frame (1) is pushed to move to the sampling area, and the motor three (14) in the movable box (6) is started, and the drill tube (26) is driven to rotate through the rotation of the transmission gear four (28), and at the same time, the hydraulic cylinder (5) pushes the movable box (6) to move downward, and when the drill bit (702) contacts the ground, the valve at the end of the drainage pipe (27) is opened; When the movable box (6) moves to the bottom position in the control box (2), the motor three (14) is turned off and the stop bolt (22) on one side of the movable box (6) is pulled out. At this time, the push rod (20) is unfolded under the push of the spring two (18), and the cylinder drives the movable box (6) to move upward. At this time, the bottom of the drill tube (26) in the storage box (4) is inserted into the top groove (24) of the buried drill tube (26), and then the top side groove (24) of the drill tube (26) is aligned with the spherical clamping column (17), and the push rod (20) on the outside of the movable box (6) is pressed inward, so that the push rod (20) pushes the spherical clamping column (17) to engage with the outer groove (24) of the new drill tube (26). At this time, the stop bolt (22) is fixed to the stop hole (21), and the cylinder and the motor three (14) are restarted. The installation of the drill tube (26) is repeated until the bottom drill bit (702) reaches the specified depth. At this time, the motor 1 (704) in the housing (701) is started, and the motor 1 (704) drives the transmission gear 2 (706) to rotate, thereby realizing the rotation of the gear cylinder (707) in the housing (701). At the same time, the rotation of the motor 2 (10) drives the abutment cylinder (13) in the rotating cylinder (11) to rotate out, thereby expanding the expansion piece (8) installed on the side wall of the deformation column (709). When the expansion piece (8) is expanded, it abuts against one side of the gear cylinder (707), thereby pushing the rotating gear cylinder (707) out of the housing (701). 01), after the end of the tooth cylinder (707) contacts the sample collection area, the sample collection cover is removed, and the tension rope (9) is pulled by the rotating winding roller (23), thereby driving the entire deformation column (709) to rise, thereby causing the entire tooth cylinder (707) to rotate, thereby breaking the tooth cylinder (707) to collect samples, and when the resistance cylinder (13) contracts, the spring 1 (708) pushes the tooth cylinder (707) to contract into the housing (701), and the remaining samples are collected after the entire drill bit (702) continues to move down to the specified position.

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