A portable glacial lake sampler

Abstract

The present invention relates to the technical field of glacial lake sampling, and specifically to a portable glacial lake sampler, comprising a sampler outer cylinder and a transparent sampling tube arranged in the sampler outer cylinder, a closing component is arranged at the lower end of the sampling tube, and the lower part of the closing component is a cutting component connected to the lower end of the sampler outer cylinder; a force-bearing component is arranged at the upper end of the sampler outer cylinder, and a gripping portion is arranged on one side of the force-bearing component; a handle of a lifting component is also arranged at the gripping portion, and a movable sleeve of the lifting component is operated by the handle; by arranging a closing component on the cutter head, the sample can be prevented from being damaged while leakage is prevented, and the drivable heavy hammer component allows the top end of the sampler to be evenly stressed to facilitate downward force sampling.

Description

Technical Field

[0001] The invention relates to the technical field of glacial lake sampling, and in particular to a portable glacial lake sampler. Background Art

[0002] Glaciers are sensitive indicators of climate change. Their ice cores record climate information over the past tens of thousands of years, such as temperature, precipitation, and atmospheric composition, helping scientists reconstruct ancient climates and predict future changes. Lake sediments preserve the history of regional environmental evolution, including hydrology, ecology, and the impact of human activities. By analyzing these samples, we can reveal the long-term impact of natural and human activities on the environment, and assess changes in water resources, ecosystem health, and natural disaster risks. Glacier lake samplers are key tools for sampling glaciers and lakes. Their design and technical features vary depending on the application scenario. The sampling tubes and blades of existing samplers are not designed properly, which will cause sample leakage during sampling and fail to keep the samples in their original state. The upper end of the sampler is subjected to uneven force, making it difficult to operate and control during sampling. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a portable glacial lake sampler. By providing a sealing component on the cutter head, it is possible to prevent leakage while ensuring that the sample is not damaged. The drivable heavy hammer component allows the top of the sampler to be evenly stressed, making it convenient to apply force downward for sampling.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A portable glacial lake sampler comprises a sampler outer cylinder and a transparent sampling tube arranged in the sampler outer cylinder, a closing assembly is arranged at the lower end of the sampling tube, and the lower part of the closing assembly is a cutting assembly connected to the lower end of the sampler outer cylinder; a force-bearing assembly is arranged at the upper end of the sampler outer cylinder, and a gripping portion is arranged on one side of the force-bearing assembly; a handle of a lifting assembly is also arranged at the gripping portion, and a movable sleeve of the lifting assembly is operated by the handle; the movable sleeve acts on the closing assembly to make the closing assembly open / close the entry channel of the sampling tube; a guide portion is arranged at the upper end of the force-bearing assembly, and a slidable weight is arranged on the guide portion; after the driving structure in the guide portion lifts the weight, the weight falls and hits the bearing plate of the force-bearing assembly, and the cutting assembly cuts the sample and makes the sample enter the sampling tube; the transparent sampling tube is a detachable structure.

[0006] Furthermore, the closing assembly includes a mounting seat and an elastomer circumferentially arranged on the mounting seat; the mounting seat is installed at the lower end of the sampling tube, and the internal threaded portion of the cutting assembly is connected to the external threaded portion of the outer tube of the sampler; the lower portion of the cutting assembly is an annular cutter head, and the middle portion of the cutter head is an entrance; a movable space is formed between the upper end of the cutter head and the lower end of the sampling tube; the movable sleeve of the pulling assembly is arranged in the movable space.

[0007] Furthermore, a mounting surface connected end to end is provided on the inner circumference of the mounting seat, and the mounting portion of the elastic body is connected to the mounting surface; the upper end of the mounting surface of the elastic body is a bending portion, and the upper part of the bending portion is a closed portion.

[0008] Furthermore, the mounting portion and the closing portion of the elastomer are planar structures; the mounting surface of the mounting seat is a planar structure; the third sides of the two elastomers arranged opposite to each other on the mounting seat are arranged approximately in parallel; the two sides of the closing portion of the elastomer are the first side and the second side; the first side of one of the elastomers is adjacent to the first side of the other elastomer arranged opposite to each other.

[0009] Furthermore, a pull rod is provided at the upper end of the outer side of the movable sleeve of the lifting assembly, and the pull rod is slidably arranged in the guide groove of the outer tube of the sampler; the upper end of the pull rod is connected to the handle of the lifting assembly; the upper end of the handle is connected to the gripping part through an elastomer; a rotatable lock is provided at the outer end of the handle, and the lock can be engaged with the locking tongue on the gripping part.

[0010] Furthermore, the outer side of the movable sleeve is connected to the pull rod, and the inner side of the movable sleeve is an abutment portion that can extend into the interior of the closed component; when the movable sleeve moves to the upper end of the movable space, the abutment portion can push the bending portion of the elastomer of the closed component; so that the elastomer is transformed from a bent shape to an approximately vertical shape.

[0011] Furthermore, the holding portion is arranged on both sides of the force-bearing component, and the upper end of the force-bearing component is a laterally extending supporting plate; the root of the handle of the holding portion is connected to the side of the force-bearing component, and the middle part of the handle is connected to the supporting plate through a mounting block; a switch is also provided on the mounting block; the locking tongue is arranged at the lower end near the root of the handle.

[0012] Furthermore, the guide part is arranged on the bearing plate of the force-bearing component, and a guide rail is arranged on the side of the guide part; the weight is sleeved on the guide rail of the guide part; the inner side of the weight is provided with a rack extending into the through groove of the guide part; the driving component inside the guide part is transmission connected with the rack; the weight has multiple mass blocks.

[0013] Furthermore, the driving assembly inside the guide part includes a motor and a speed gear and a driving wheel arranged on a bracket; the output gear of the motor is meshed with the speed gear; the driving wheels have two groups, and the driving wheels are composed of incomplete gears and synchronous gears arranged coaxially; the synchronous gears of the two groups of driving wheels are meshed with each other, and the speed gear is meshed with the synchronous gear of one of the driving wheels; the switch on the mounting block controls the motor.

[0014] Furthermore, the incomplete gear of the driving wheel has a gear section and a smooth section, the gear section of the incomplete gear meshes with the rack of the weight and lifts the weight; after the smooth section of the incomplete gear rotates to the rack, the weight loses the support of the incomplete gear and falls.

[0015] Compared with the prior art, the present invention provides a portable glacial lake sampler, which has the following beneficial effects: the present invention can open the closing component at the lower end of the sampling tube through the pulling component, thereby preventing the spring claws and other elastic bodies of the closing component from damaging the structure of the sample passing through, so that the collected sample remains in its original state; the elastic body structure of the closing component is simple and easy to manufacture, and the sealing effect after closing is good, and no large gap will be generated to prevent the sample from falling from the sampling tube; after the locking buckle of the pulling component is snapped into the locking tongue of the handle, the closing component can be continuously kept in an open state, which is convenient for operation; the driving group inside the guide part can lift the heavy hammer more stably, and balance the force on the bearing plate of the force-bearing component when it hits, which is beneficial for the operator to maintain the vertical state of the outer cylinder of the sampler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the portable glacial lake sampler of the present invention;

[0017] Figure 2 It is an exploded schematic diagram of the sampler head of the present invention;

[0018] Figure 3 is a cross-sectional view of the sampler head of the present invention;

[0019] Figure 4 A cross-sectional view of the closure assembly of the present invention after opening;

[0020] Figure 5 An exploded view of a closure assembly of the present invention;

[0021] Figure 6 It is a schematic diagram of the installation structure of the elastic body of the present invention;

[0022] Figure 7 For the present invention Figure 6 Side view in;

[0023] Figure 8It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0024] Fig. 9 is a cross-sectional view of the lifting assembly of the present invention;

[0025] Fig.10 is a schematic diagram of the locking structure of the lifting assembly of the present invention;

[0026] Fig.11 It is a structural schematic diagram of the guide part of the present invention;

[0027] Fig.12 is a cross-sectional view of a guide portion of the present invention;

[0028] Fig.13 It is a schematic diagram of the weight of the present invention moving to the uppermost end;

[0029] Fig.14 It is a schematic diagram of the transmission structure in the guide part of the present invention;

[0030] In the figure:

[0031] The sampler outer tube 1, the guide groove 11, and the external threaded portion 12;

[0032] Cutting assembly 2, internal thread portion 21, cutter head 22, inlet 23, activity space 24;

[0033] Force bearing component 3, bearing plate 31;

[0034] Grip 4, handle 41, mounting block 42, switch 40, lock tongue 43;

[0035] The lifting component 5, the pull rod 51, the movable sleeve 52, the abutment portion 521, the handle 53, the elastic component 54, and the lock buckle 55;

[0036] Guide part 6, guide rail 61, through slot 62, motor 63, speed change gear 64, drive wheel 65, incomplete gear 601, synchronous gear 602, bracket 66;

[0037] A weight 7, a mass block 71, and a rack 72;

[0038] The closing component 8, the mounting seat 81, the mounting surface 811, the elastic body 82, the mounting portion 821, the bending portion 822, the closing portion 823, the first side 801, the second side 802, and the third side 803;

[0039] Sampling tube 9; DETAILED DESCRIPTION

[0040] 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.

[0041] The following is based on the attached Figure 1-14 The present invention is described in detail. The portable glacial lake sampler of the present invention comprises a sampler outer barrel 1 and a transparent sampling tube 9 arranged in the sampler outer barrel 1. The lower end of the sampling tube 9 is provided with a closing component 8, and the lower part of the closing component 8 is a cutting component 2 connected to the lower end of the sampler outer barrel 1; the upper end of the sampler outer barrel 1 is provided with a force-bearing component 3, and one side of the force-bearing component 3 is provided with a gripping portion 4; the gripping portion 4 is also provided with a handle 53 of a lifting component 5, and the lifting component 5 is operated by the handle 53. The movable sleeve 52 of the pulling component 5; the movable sleeve 52 acts on the closing component 8, so that the closing component 8 opens / closes the entrance channel of the sampling tube 9; the upper end of the force-bearing component 3 is provided with a guide part 6, and the guide part 6 is provided with a slidable weight 7; after the driving structure in the guide part 6 lifts the weight 7, the weight 7 falls and hits the supporting plate 31 of the force-bearing component 3, the cutting component 2 cuts the sample, and the sample enters the sampling tube 9; the transparent sampling tube 9 is a detachable structure.

[0042] Specifically, the gripping portion 4 is symmetrically arranged on both sides of the sampler outer tube 1 to facilitate the operator to hold it. Similarly, the handle 53 of the lifting assembly 5 is also symmetrically arranged on both sides of the sampler outer tube 1, and the handle 53 is arranged in a longitudinal position close to the gripping portion 4, so that the handle 53 and the gripping portion 4 can be grasped by one hand to pull the gripping handle 53 upward, so that the movable sleeve 52 of the lifting assembly 5 can be used to push the sealing assembly 8 upward to open the elastic body 82 of the sealing assembly 8. When sampling using the portable glacial lake sampler of the present invention, the sealing assembly 8 is first opened by the lifting assembly 5 before sampling, thereby opening the entry channel of the sampling tube 9. The sampler of the prior art uses the upward movement process of the sample itself to pressurize and push open the sealing assembly 8. The elastic body such as the spring claw of the sealing assembly 8 will destroy the structure of the sample passing through, and the collected sample cannot be kept in its original state. The sealing assembly 8 of the present invention is fixed open by the movable sleeve 52 of the lifting assembly 5, so that the sample can remain in its original state after entering the sampling tube 9. In addition, the transparent sampling tube 9, the sampler outer tube 1, the force-bearing component 3, the guide part 6, the heavy hammer 7, etc. of the present invention are all detachable structures, which are convenient to carry.

[0043] The closing assembly 8 includes a mounting seat 81 and an elastic body 82 circumferentially arranged on the mounting seat 81; the mounting seat 81 is installed at the lower end of the sampling tube 9, and the internal threaded portion 21 of the cutting assembly 2 is connected to the external threaded portion 12 of the sampler outer tube 1; the lower portion of the cutting assembly 2 is an annular cutter head 22, and the middle portion of the cutter head 22 is an inlet 23; a movable space 24 is formed between the upper end of the cutter head 22 and the lower end of the sampling tube 9; the movable sleeve 52 of the pulling assembly 5 is arranged in the movable space 24.

[0044] The mounting seat 81 is a hollow annular structure, and the elastic body 82 has a bent shape and is vertically arranged around the mounting seat 81. The upper ends of the elastic bodies 82 around the mounting seat 81 abut against each other to form a closed structure to prevent the sample in the sampling tube 9 from sliding down. The hollow structure of the mounting seat 81 is connected to the inlet 23 of the cutting assembly 2 below. After the movable sleeve 52 of the lifting assembly 5 is used to change the shape of the elastic body 82 of the sealing assembly 8, the sealing assembly 8 is opened so that the inlet 23 of the cutting assembly 2 is connected to the entry channel of the sampling tube 9.

[0045] The inner circumference of the mounting seat 81 is provided with a mounting surface 811 connected end to end, and the mounting portion 821 of the elastic body 82 is connected to the mounting surface 811; the upper end of the mounting surface 811 of the elastic body 82 is a bending portion 822, and the upper part of the bending portion 822 is a closing portion 823.

[0046] The elastic body 82 is arranged vertically, and the bending portion 822 of the elastic body 82 makes the closing portion 823 extend obliquely toward the central axis of the sampling tube 9, so that the circumferentially arranged elastic body 82 forms a closed structure at the upper end of the closing portion 823; Figure 4 After the movable sleeve 52 moves upward and abuts against the bent portion 822 of the elastic body 82, the elastic body 82 is made to be approximately vertical by changing the shape of the bent portion 822, thereby opening the closed structure formed at the upper end of the closing portion 823.

[0047] The mounting portion 821 and the closing portion 823 of the elastic body 82 are planar structures; the mounting surface 811 of the mounting seat 81 is a planar structure; the third side edges 803 of the two elastic bodies 82 arranged opposite to each other on the mounting seat 81 are arranged approximately in parallel; the two sides of the closing portion 823 of the elastic body 82 are the first side edge 801 and the second side edge 802; the first side edge 801 of one of the elastic bodies 82 is adjacent to the first side edge 801 of the other elastic body 82 arranged opposite to each other.

[0048] Specifically, Figure 6Two relatively arranged elastic bodies 82 are shown, wherein the first side edge 801 of the closing portion 823 at the upper end of one elastic body 82 is adjacent to the first side edge 801 of the other elastic body 82 in the closed state. The mounting portion 821 and the closing portion 823 of the elastic body 82 of the present invention are planar structures, so that the elastic body 82 is only bent once at the bending portion 822. The elastic body in the prior art usually needs to be twisted laterally in addition to bending to achieve the closure of the top, and the twisted elastic body is difficult to restore to the initial state when it is restored after opening, so that the closed structure at the top of the elastic body is prone to large gaps and openings, and the closing effect is poor. The elastic body 82 of the present invention only needs to be bent once at the bending portion 822, so that the elastic body 82 can maintain the original bending state after deformation recovery, so that the closing portion 823 at the top can form a tightly closed structure. At the same time, after the elastic body 82 is opened by the movable sleeve 52 of the lifting assembly 5, due to the lack of lateral torsion, the opened elastic body 82 can maintain a nearly vertical posture, reducing the space occupied by lateral torsion, thereby facilitating the passage of the sample and reducing damage to the sample structure.

[0049] A pull rod 51 is provided at the upper end of the outer side of the movable sleeve 52 of the lifting assembly 5, and the pull rod 51 is slidably set in the guide groove 11 of the sampler outer tube 1; the upper end of the pull rod 51 is connected to the handle 53 of the lifting assembly 5; the upper end of the handle 53 is connected to the holding part 4 through an elastic assembly 54; the outer end of the handle 53 is provided with a rotatable lock buckle 55, and the lock buckle 55 can be engaged with the locking tongue 43 on the holding part 4.

[0050] In one embodiment of the present invention, there are two pull rods 51 which are oppositely arranged on both sides of the movable sleeve 52. In other embodiments, there are multiple pull rods 51 which are circumferentially arranged on the movable sleeve 52. There are two handles 53 at the upper end of the pull rod 51, so that the operator can operate the handles 53 with both hands when operating the gripping part 4.

[0051] The outer side of the movable sleeve 52 is connected to the pull rod 51, and the inner side of the movable sleeve 52 is an abutment portion 521 that can extend into the interior of the closing component 8; when the movable sleeve 52 moves to the upper end of the movable space 24, the abutment portion 521 can push the bending portion 822 of the elastomer 82 of the closing component 8, so that the elastomer 82 is transformed from a bent shape to an approximately vertical shape.

[0052] Specifically, the movable sleeve 52 is a hollow annular structure, and the extension height of the connection between the outer side of the movable sleeve 52 and the pull rod 51 is lower than the extension height of the abutment portion 521, so that when the movable sleeve 52 is in a movable stroke limited by the movable space 24, the abutment portion 521 can extend upward from the inner side of the mounting seat 81 of the closing component 8 and abut against the bent portion 822 of the elastomer 82, so that when the movable sleeve 52 is pulled upward by the pull rod 51, the abutment portion 521 of the movable sleeve 52 can act on the bent portion 822 of the elastomer 82 and deform the elastomer 82 to open the closed structure formed at the closing portion 823 of the elastomer 82.

[0053] The holding portion 4 is arranged on both sides of the force-bearing component 3, and the upper end of the force-bearing component 3 is a laterally extending supporting plate 31; the root of the handle 41 of the holding portion 4 is connected to the side of the force-bearing component 3, and the middle part of the handle 41 is connected to the supporting plate 31 through a mounting block 42; a switch 40 is also arranged on the mounting block 42; the locking tongue 43 is arranged at the lower end near the root of the handle 41.

[0054] Specifically, the lock buckle 55 of the present invention is a U-shaped structure, and the open end of the lock buckle 55 is hinged to the outer end of the handle 53, and the lock buckle 55 can be rotated to the top of the handle 53 and enter the top of the lock tongue 43 of the grip 41 to achieve snap connection. When sampling, after the handle 53 is pulled upward to open the closure assembly 8, the lock buckle 55 is rotated and snapped into the lock tongue 43 of the grip 41, so that the closure assembly 8 can be kept in an open state. After that, the operator only needs to hold the grip 41 of the grip 4 and control the weight 7 to apply force to the cutting assembly 2 at the lower end of the sampler outer tube 1 to perform sampling. During the sampling process, the closure assembly 8 that remains in an open state can avoid damage to the sample entering the sampling tube 9. At the same time, the operator focuses on controlling the grip 41 of the grip 4 to keep the bearing plate 31 of the force-bearing assembly 3 in a balanced force state, which is conducive to ensuring that the cutting direction is consistent during sampling, and the operation is simpler and the sampling quality is higher.

[0055] The guide portion 6 is arranged on the bearing plate 31 of the force-bearing component 3, and a guide rail 61 is arranged on the side of the guide portion 6; the weight 7 is sleeved on the guide rail 61 of the guide portion 6; the inner side of the weight 7 is provided with a rack 72 extending into the through groove 62 of the guide portion 6; the driving component inside the guide portion 6 is transmission-connected with the rack 72; the weight 7 has a plurality of mass blocks 71.

[0056] Specifically, the mass blocks 71 of the weights 7 are all hollow cubic structures, the racks 72 are symmetrically arranged on the sides of the middle hollow structure, and a sliding support structure cooperating with the guide rail 61 is arranged on another set of opposite sides of the hollow structure of the mass block 71. The weights 7 are driven to rise and then fall to hit the bearing plate 31 of the force-bearing component 3 through the driving assembly inside the guide part 6. Compared with the manual lifting of the weights in the prior art, the operator can support the holding part 4 with both hands and keep the sampler outer tube 1 in a vertical state at all times when sampling. The driving group inside the guide part 6 can lift the weights 7 more stably, and it is beneficial for the operator to maintain the vertical state of the sampler outer tube 1 when hitting the bearing plate 31 of the force-bearing component 3.

[0057] The driving assembly inside the guide part 6 includes a motor 63 and a speed gear 64 and a driving wheel 65 arranged on a bracket 66; the output gear of the motor 63 is meshed with the speed gear 64; the driving wheel 65 has two groups, and the driving wheel 65 is composed of an incomplete gear 601 and a synchronous gear 602 arranged coaxially; the synchronous gears 602 of the two groups of the driving wheels 65 are meshed with each other, and the speed gear 64 is meshed with the synchronous gear 602 of one of the driving wheels 65; the switch 40 on the mounting block 42 controls the motor 63.

[0058] Specifically, the bracket 66 is arranged inside the guide part 6 and fixed on the bearing plate 31 of the force-bearing component 3. Two sets of driving wheels 65 are symmetrically arranged on the upper end of the bracket 66. After the rack 72 of the weight 7 extends into the guide part 6 through the through groove 62 of the guide part 6, the two racks 72 are respectively connected to the incomplete gear 601 on the driving wheel 65. The speed change gear 64 is arranged in the middle of the bracket 66. The output gear of the motor 63 drives the two synchronous gears 602 to rotate synchronously in opposite directions after being decelerated by the speed change gear 64.

[0059] The incomplete gear 601 of the driving wheel 65 has a gear section and a smooth section. The gear section of the incomplete gear 601 meshes with the rack 72 of the weight 7 and lifts the weight 7. After the smooth section of the incomplete gear 601 rotates to the rack 72, the weight 7 loses the support of the incomplete gear 601 and falls.

[0060] Specifically, the gear segments and smooth segments on the two relatively arranged incomplete gears 601 are symmetrically arranged. When the weight 7 is at the upper end surface of the bearing plate 31, the gear segment of the incomplete gear 601 rotates to the rack 72 of the weight 7 and begins to mesh with the rack 72, driving the weight 7 to rise. Then, the smooth segment of the incomplete gear 601 rotates to the rack 72 of the weight 7. After the weight 7 loses support, it starts to do free fall motion and hits the bearing plate 31 of the force-bearing component 3. See attached Fig.13 , the incomplete gear 601 rotates and repeats the above process.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable glacial lake sampler, comprising a sampler outer cylinder (1) and a transparent sampling tube (9) arranged in the sampler outer cylinder (1), characterized in that: A sealing component (8) is provided at the lower end of the sampling tube (9), and the lower part of the sealing component (8) is a cutting component (2) connected to the lower end of the sampler outer cylinder (1); A force-bearing component (3) is provided at the upper end of the sampler outer cylinder (1), and a gripping portion (4) is provided on one side of the force-bearing component (3); A handle (53) of the lifting assembly (5) is also provided at the gripping portion (4), and the movable sleeve (52) of the lifting assembly (5) is operated via the handle (53); The movable sleeve (52) acts on the sealing component (8) so that the sealing component (8) opens / closes the entrance passage of the sampling tube (9); A guide portion (6) is provided at the upper end of the force-bearing component (3), and a slidable weight (7) is provided on the guide portion (6); After the driving structure in the guide portion (6) lifts the weight (7), the weight (7) falls and hits the bearing plate (31) of the force-bearing component (3), and the cutting component (2) cuts the sample and allows the sample to enter the sampling tube (9); The transparent sampling tube (9) is a detachable structure; The sealing assembly (8) comprises a mounting seat (81) and an elastic body (82) circumferentially arranged on the mounting seat (81); The mounting portion (821) and the closing portion (823) of the elastic body (82) are planar structures; The mounting surface (811) of the mounting seat (81) is a planar structure; The third side edges (803) of the two elastic bodies (82) arranged opposite to each other on the mounting seat (81) are arranged approximately in parallel; The two sides of the closed portion (823) of the elastic body (82) are a first side edge (801) and a second side edge (802); The first side edge (801) of one of the elastic bodies (82) is adjacent to the first side edge (801) of another elastic body (82) arranged opposite thereto.

2. A portable glacial lake sampler according to claim 1, characterized in that: The mounting seat (81) is mounted on the lower end of the sampling tube (9), and the internal threaded portion (21) of the cutting assembly (2) is connected to the external threaded portion (12) of the sampler outer tube (1); The lower part of the cutting assembly (2) is an annular cutter head (22), and the middle part of the cutter head (22) is an inlet (23); An activity space (24) is formed between the upper end of the cutter head (22) and the lower end of the sampling tube (9); The movable sleeve (52) of the lifting component (5) is arranged in the movable space (24).

3. A portable glacial lake sampler according to claim 2, characterized in that: A mounting surface (811) connected end to end is provided in the inner circumferential direction of the mounting seat (81), and the mounting portion (821) of the elastic body (82) is connected to the mounting surface (811); The upper end of the mounting surface (811) of the elastic body (82) is a bent portion (822), and the upper portion of the bent portion (822) is a closed portion (823).

4. A portable glacial lake sampler according to claim 3, characterized in that: A pull rod (51) is provided at the upper end of the outer side of the movable sleeve (52) of the lifting assembly (5), and the pull rod (51) is slidably arranged in the guide groove (11) of the outer cylinder (1) of the sampler; The upper end of the pull rod (51) is connected to the handle (53) of the lifting assembly (5); The upper end of the handle (53) is connected to the gripping portion (4) via an elastic component (54); The outer end of the handle (53) is provided with a rotatable lock buckle (55), and the lock buckle (55) can be engaged with a lock tongue (43) on the gripping portion (4).

5. A portable glacial lake sampler according to claim 4, characterized in that: The outer side of the movable sleeve (52) is connected to the pull rod (51), and the inner side of the movable sleeve (52) is an abutment portion (521) that can extend into the interior of the closure assembly (8); When the movable sleeve (52) moves to the upper end of the movable space (24), the abutment portion (521) is able to push the bent portion (822) of the elastic body (82) of the closing component (8); The elastic body (82) is transformed from a bent state to a nearly vertical state.

6. A portable glacial lake sampler according to claim 5, characterized in that: The gripping portion (4) is arranged on both sides of the force-bearing component (3), and the upper end of the force-bearing component (3) is a laterally extending bearing plate (31); The root of the grip (41) of the gripping portion (4) is connected to the side of the force-bearing component (3), and the middle of the grip (41) is connected to the bearing plate (31) via a mounting block (42); The mounting block (42) is also provided with a switch (40); The locking tongue (43) is arranged at the lower end near the root of the handle (41).

7. A portable glacial lake sampler according to claim 6, characterized in that: The guide portion (6) is arranged on a bearing plate (31) of the force-bearing component (3), and a guide rail (61) is arranged on a side surface of the guide portion (6); The weight (7) is sleeved on the guide rail (61) of the guide portion (6); The inner side surface of the weight (7) is provided with a rack (72) extending into the through groove (62) of the guide portion (6); The driving assembly inside the guide portion (6) is in driving connection with the rack (72); The weight (7) has a plurality of mass blocks (71).

8. A portable glacial lake sampler according to claim 7, characterized in that: The driving assembly inside the guide portion (6) comprises a motor (63) and a speed change gear (64) and a driving wheel (65) arranged on a bracket (66); The output gear of the motor (63) is meshed with the speed change gear (64); There are two sets of driving wheels (65), and the driving wheels (65) are composed of an incomplete gear (601) and a synchronous gear (602) arranged coaxially; The synchronous gears (602) of the two sets of driving wheels (65) mesh with each other, and the speed change gear (64) meshes with the synchronous gear (602) of one of the driving wheels (65); The switch (40) on the mounting block (42) controls the motor (63).

9. A portable glacial lake sampler according to claim 8, characterized in that: The incomplete gear (601) of the driving wheel (65) has a gear section and a smooth section, and the gear section of the incomplete gear (601) meshes with the rack (72) of the weight (7) to lift the weight (7); After the smooth section of the incomplete gear (601) rotates to the rack (72), the weight (7) loses the support of the incomplete gear (601) and falls.

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