CN113758756A - Spherical underwater soil sampling device and method - Google Patents
Spherical underwater soil sampling device and method Download PDFInfo
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- CN113758756A CN113758756A CN202111062000.0A CN202111062000A CN113758756A CN 113758756 A CN113758756 A CN 113758756A CN 202111062000 A CN202111062000 A CN 202111062000A CN 113758756 A CN113758756 A CN 113758756A
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- 238000005527 soil sampling Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 115
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000002689 soil Substances 0.000 claims description 17
- 239000013049 sediment Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/12—Dippers; Dredgers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
- G01N2001/1012—Suspensions
- G01N2001/1025—Liquid suspensions; Slurries; Mud; Sludge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a spherical underwater soil sampling device and a method, which comprises a sampling device, a rotating bracket device and a driving control device, wherein the sampling device is connected with the rotating bracket device; the sampling device comprises a sampler shell and a lifting handle; the sampler shell comprises a top cover and a sampling head; the lifting handles are symmetrically arranged on the two semicircular plates of the top cover; a lifting handle steel wire rope connected with the driving control device is arranged on the lifting handle; the rotating bracket device comprises a chassis and a rotating arm rod; one end of the rotating arm rod is fixed on the base plate, and the other end of the rotating arm rod is connected with the sampling device; the driving control device is arranged on the rotating arm rod and drives the rotating arm rod to rotate towards any direction. The invention increases the success probability of sample collection, reduces underwater resistance and sample extraction difficulty, and is convenient and labor-saving.
Description
Technical Field
The invention relates to the field of soil sampling, in particular to a spherical underwater soil sampling device and method.
Background
Soil is a basic environmental element forming a human ecosystem, and prevention and control of soil pollution are directly related to agricultural product safety and health of people. The research of the soil sampler is one of necessary tools in the aspect of soil in the field of natural environment, and the performance of the soil sampler determines the quality of a sample and the convenience degree of the sample during sampling. According to the category of the sampled soil, the soil sampler can be divided into a hard soil sampler and a mud sampler, and is suitable for different fields and soil sampling purposes. The invention is specially designed for sampling underwater soil (containing silt), thereby fundamentally increasing the success rate of sample collection, reducing underwater resistance and difficulty in sample extraction, and being convenient and labor-saving.
Disclosure of Invention
The invention aims to solve the technical problem of providing the spherical underwater soil sampling device and the method aiming at the defects of the prior art, and the spherical underwater soil sampling device and the method increase the success rate of sample collection, reduce underwater resistance and sample extraction difficulty, and are convenient and labor-saving.
In order to solve the technical problems, the invention adopts the technical scheme that:
a spherical underwater soil sampling device comprises a sampling device, a rotating bracket device and a driving control device;
the sampling device comprises a sampling head, a top cover and a lifting handle.
The top cover is a circular plate formed by connecting two semicircular plates with the same size and shape through a hinge.
The sampling head is in a spherical shape with a part cut by the top cover; the plane where the circle center of the top cover is connected with the sphere center of the sampling head is perpendicular to the top cover, and the plane where the circle center of the top cover is connected with the sphere center of the sampling head divides the sampling head into two symmetrical hemispheres.
The lifting handles are symmetrically arranged on the two semicircular plates of the top cover and are respectively arranged at the positions which are farthest away from the plane where the connection line of the circle center of the top cover and the sphere center of the sampling head is located; and a lifting handle steel wire rope connected with the driving control device is arranged on the lifting handle.
The rotating bracket device comprises a chassis and a rotating arm rod.
One end of the rotating arm rod is fixed on the chassis, and the other end of the rotating arm rod is connected with the sampling device.
The driving control device is arranged on the rotating arm rod and drives the rotating arm rod to rotate towards any direction.
As a further preferred aspect of the present invention, the rivet is disposed on one side semicircular plate of the top cover, and the hook is disposed on the other side semicircular plate of the top cover.
In a further preferred embodiment of the present invention, an intra-tooth groove is provided at a position where the two portions of the sampling head are in contact with each other.
As a further preferred aspect of the present invention, the top cover is provided with a top cover drain hole; the sampling head is provided with an edge drain hole.
As a further preferred aspect of the present invention, the rotating arm includes a vertical rotating shaft, a thick arm, a vertical rotating arm, a middle arm, and a telescopic arm; the vertical rotating shaft is vertically fixed on the chassis; the bottom end of the thick arm rod is sleeved in the vertical rotating shaft, and the top end of the thick arm rod is fixed with a vertical rotating arm rod; the thick arm rod can freely rotate along a vertical central axis perpendicular to the rotating shaft; one end of the middle arm rod is fixed on the vertical rotating arm rod, and the other end of the middle arm rod is fixed with a telescopic arm rod.
Preferably, the end part of the side where the telescopic arm rod is connected with the middle arm rod is provided with a buckle bolt; the telescopic arm rod is provided with a sawtooth bayonet; the telescopic arm rod is adjusted to stretch or extend along the self axial direction by adjusting the number of the clamping teeth of the sawtooth buckle clamped by the buckle bolt.
As a further preferable aspect of the present invention, the drive control device includes a large fixed pulley, a rotating handle, an arm fixed pulley, a terminal fixed pulley, a wire rope, and a movable pulley; the large fixed pulley is fixed on the rotating arm rod, and a rotating handle is arranged on the large fixed pulley; the arm lever fixed pulley is arranged on the middle arm lever and is positioned at the end part of one side of the middle arm lever connected with the telescopic arm lever; the tail end fixed pulley is arranged on the telescopic arm rod and is positioned at the end part of one side of the telescopic arm rod, which is far away from the middle arm rod; the large fixed pulley, the arm rod fixed pulley and the tail end fixed pulley are connected and matched through a steel wire rope; the movable pulley is connected with the fixed pulley at the tail end through a steel wire rope and is suspended below the fixed pulley at the tail end; the movable pulley is connected with a lifting handle of the sampling head through a steel wire rope.
Preferably, the top end of the movable pulley is provided with an upper end bolt hole for fixing a steel wire rope, and the bottom end of the movable pulley is provided with a lower end bolt hole for connecting a sampling device.
A sampling method of a spherical underwater soil sampling device specifically comprises the following steps:
s1, placing the chassis of the rotating bracket at a proper position, fixing the vertical rotating shaft, the thick arm rod, the vertical rotating arm rod, the middle arm rod and the telescopic arm rod, and adjusting the vertical rotating shaft, the thick arm rod, the vertical rotating arm rod, the middle arm rod and the telescopic arm rod to the proper position;
s2, adjusting the number of the clamping teeth of the sawtooth buckle to adjust the telescopic arm rod to a proper length by adjusting the clamping bolt, winding the steel wire rope on the large fixed pulley, the arm rod fixed pulley and the tail end fixed pulley, and shaking the rotary handle to control the height of the brake pulley and the positions of the upper end bolt hole and the lower end bolt hole;
s3, laterally placing the sampling head to be in an open state, and hooking the hook on the rivet; slowly pulling up the steel wire rope on the lifting handle until the sampling head is completely suspended and is in an open state, and then hanging the steel wire rope on the lifting handle on a lower end bolt hole;
s4, fixing the chassis, controlling the vertical rotating arm rod and the middle arm rod, and enabling the sampling head to stay above the proper sampling area; then the handle is rotated by hand cranking, so that the sampling head slowly sinks in the water; when the sampling head quickly touches the sediment of the water body, the handle is rotated in a forward rotation manner to loosen the steel wire rope, so that the sinking speed of the sampling head is increased, and the undercutting depth of the sampling head is increased;
s5, after the sampling head is cut downwards, the sampling head stays for 30S, then the rotating handle is slowly shaken in the opposite direction to ensure that the sampling head containing muddy water is slowly lifted after the sampling head is normally closed, and partial water can be slowly discharged through a water discharging hole of a top cover of the sampling head;
and S6, after the sampling head is lifted out of the water surface and is continuously lifted to a reasonable height, slowly rotating the rotating arm rod to reach a specified position, taking down the sampling head with the sludge, draining water through the edge drain hole, unhooking the hook after the drainage is finished, and pouring soil in the sampling head into the sampling bag to finish sampling.
The invention has the following beneficial effects:
1. the invention can overcome the technical problems of large underwater resistance, easy side leakage and the like in the using process and is suitable for collecting underwater soil samples.
2. The invention can be used in water bodies with different depths, and is time-saving and labor-saving. The method for fixing the supporting rods and the pulleys on the spherical soil grab bucket, the gathering type steel wire rope and the ship body achieves the purposes of reducing underwater soil sampling resistance and saving labor when the sludge grab bucket is lifted out of the water surface, and increases resistance to soil and sludge and prevents the soil from integrally and automatically sliding out by adding the toothed inner side groove on the lower edge of the grab bucket.
Drawings
Fig. 1 is a schematic view of the overall structure of a spherical underwater soil sampling device of the present invention.
Fig. 2 is a structural view of a sampling head of the spherical underwater soil sampling device of the present invention.
FIG. 3 is a side view of a sampling head of a spherical underwater soil sampling device of the present invention.
FIG. 4 is a cross-sectional view of a sampling head of a spherical underwater soil sampling device of the present invention.
Among them are:
10. a sampling device; 11. a sampling head; 12. a top cover; 13. lifting a handle; 131. a handle-lifting steel wire rope; 14. riveting; 15. hooking; 16. tooth inner grooves; 17. a top cover drain hole; 18. edge drain holes;
20. a rotating bracket device; 21. a chassis; 22. a rotating arm lever; 221. a vertical rotation axis; 222. a thick arm lever; 223. vertically rotating the arm; 224. a middle arm lever; 225. a telescopic arm lever; 226. a snap bolt; 227. a sawtooth bayonet;
30. a drive control device; 31 large fixed pulley; 32. rotating the handle; 33. an arm lever fixed pulley; 34. a tail end fixed pulley; 35. a wire rope; 36. a movable pulley; 361. an upper end keyhole; 362. a lower end keyhole.
Detailed Description
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
As shown in FIG. 1, the spherical underwater soil sampling device comprises a sampling device 10, a rotating bracket device 20 and a driving control device 30.
As shown in fig. 2, the sampling device 10 includes a sampling head 11, a top cover 12, and a handle 13.
The top cover 12 is a circular plate formed by connecting two semicircular plates with the same size and shape through a hinge.
The sampling head 11 is in a spherical shape with a part cut by the top cover 12, and the spherical radius is preferably about 8 to 10 cm; the plane where the line of the circle center of the top cover 12 and the sphere center of the sampling head 11 is located is perpendicular to the top cover 12, the plane where the line of the circle center of the top cover 12 and the sphere center of the sampling head 11 is located divides the sampling head into two symmetrical hemispheres, and the height of the sampling head 11 is one half to three quarters of the diameter of the sphere, so that the opening and closing and the sinking stability of the sampling head are facilitated.
The lifting handles 13 are symmetrically arranged on the two semicircular plates of the top cover and are respectively arranged at the positions which are farthest away from the plane where the connection line of the circle center of the top cover and the sphere center of the sampling head is located; the lifting handle 13 is provided with a lifting handle steel wire rope 131 connected with the driving control device 30.
As shown in fig. 3, the two semicircular plates of the top cover 12 are connected by hinges; tooth inner grooves 16 are distributed at the connection positions of the two parts of the sampling head 11, the tooth inner grooves 16 are positioned at the lower edge of the sampling head, and teeth are arranged in the inner wall of the circular arc opening to prevent sludge from sliding downwards; the tooth inclination direction is the introversion, and the tooth mouth is not beyond the plane that the sampling head opening was located.
As shown in fig. 4, a top cover drain hole 17 is disposed on the top cover 12; the sampling head is provided with an edge drain hole 18.
The rotating bracket device 20 comprises a chassis 21 and a rotating arm rod 22; one end of the rotating arm rod 22 is fixed on the chassis, and the other end is connected with the sampling device 10.
The rotating arm lever 22 includes a vertical rotating shaft 221, a thick arm lever 222, a vertical rotating arm lever 223, a middle arm lever 224, and a telescopic arm lever 225.
The vertical rotating shaft 221 is vertically fixed on the chassis 21; the bottom end of the thick arm rod 222 is sleeved in the vertical rotating shaft 221, and the top end of the thick arm rod 222 is fixed with a vertical rotating arm rod 223; the thick arm 222 is freely rotatable along the vertical central axis of the vertical rotation shaft 221.
One end of the middle arm 224 is fixed on the vertical rotating arm 223, and the other end is fixed with a telescopic arm 225.
A buckle bolt 226 is arranged at the end part of the connecting side of the telescopic arm rod 225 and the middle arm rod 224; a sawtooth bayonet 227 is arranged on the telescopic arm rod; the telescopic arm rod 225 is adjusted to be telescopic or lengthened along the self axial direction by adjusting the number of clamping teeth of the clamping bolt 226 clamping the sawtooth clamping opening 227.
The height of the thick arm lever 222 is about 80cm, and the height of the vertical rotating arm lever 223 is 20 cm; the length of the middle arm 224 and the length of the telescopic arm 225 are respectively 50cm, and the inclination angle is preferably 30 to 45 degrees.
The rotating arm 22, the vertical rotating shaft 221 on the chassis 21 and the chassis 21 can be integrally produced, and are sturdy and strong, while the telescopic arm 225 at the end is thin, tough and durable, so as to ensure the stability of the rotating bracket device 20.
The drive control device 30 is disposed on the swing arm 22 and drives the swing arm 22 to swing in any direction.
The driving control device 30 comprises a large fixed pulley 31, a rotating handle 32, an arm fixed pulley 33, a tail end fixed pulley 34, a steel wire rope 35, a movable pulley 36 and a steel wire rope 35.
The large fixed pulley 31 is fixed on the vertical rotating arm 223, and the rotating handle 32 is arranged on the large fixed pulley 31.
The arm fixed pulley 33 is disposed on the middle arm 224 and located at an end of the middle arm 224 where the telescopic arm 225 is connected to the middle arm 224.
The end fixed pulley 34 is disposed on the telescopic arm 225 and is located at an end of the telescopic arm 225 far from the middle arm 224.
The large fixed pulley 31, the arm rod fixed pulley 33 and the tail end fixed pulley 34 are connected and matched through a steel wire rope 35.
The movable pulley 36 is connected with and suspended below the end fixed pulley 34 through a steel wire rope 35; the movable pulley 36 is connected with the lifting handle 13 of the sampling head through a wire rope 35.
The top end of the movable pulley 36 is provided with an upper end bolt hole 361 for fixing the steel wire rope 35, and the bottom end of the movable pulley is provided with a lower end bolt hole 362 for connecting the sampling device 10.
The movable pulley block is preferably one to two, and the effect of saving one-half to three-fourths of pulling force is achieved through different rotation modes.
A sampling method of a spherical underwater soil sampling device specifically comprises the following steps:
s1, placing the chassis 21 of the rotating bracket device 20 at a proper position, fixing the vertical rotating shaft 221, the thick arm rod 222, the vertical rotating arm rod 223, the middle arm rod 224 and the telescopic arm rod 225, and adjusting the vertical rotating shaft, the thick arm rod 222, the vertical rotating arm rod 223, the middle arm rod 224 and the telescopic arm rod 225 to the proper position;
s2, adjusting the number of teeth of the sawtooth bayonet 227 clamped by the buckle bolt 226 to adjust the telescopic arm 225 to a proper length, fixing one end of the steel wire rope 35 on the large fixed pulley 31, sequentially winding the arm fixed pulley 33 and the tail end fixed pulley 34 on the other end of the steel wire rope, finally fixing the steel wire rope on the upper end bolt hole 361, and shaking the rotary handle 32 to adjust the position of the movable pulley 36;
s3, laterally placing the sampling head 11 to be in an open state, and hanging the hook 15 on the rivet 14; slowly pulling up the lifting handle steel wire rope 131 until the sampling head 11 is completely suspended and is in an open state, and then hanging the lifting handle steel wire rope 131 on the lower end bolt hole 362;
s4, fixing the chassis 21, controlling the vertical rotating arm 223 and the middle arm 224, and enabling the sampling head 11 to stay above the proper sampling area; then the handle 32 is rotated by hand to make the sampling head 11 slowly sink in the water; when the sampling head is in contact with the sediment of the water body, the handle 32 is rotated in a forward rotation mode to loosen the steel wire rope, the sinking speed of the sampling head 11 is increased, and the undercutting depth of the sampling head 11 is increased;
s5, after the sampling head 11 is cut downwards, the sampling head stays for 30S, then the rotating handle 32 is slowly shaken in the opposite direction to ensure that the sampling head 11 containing muddy water is slowly lifted after the sampling head 11 is normally closed, and partial water can be slowly discharged through a top cover drain hole 17 of the sampling head;
s6, after the sampling head 11 is lifted out of the water surface and is continuously lifted to a reasonable height, the vertical rotating arm 223 is slowly rotated to reach a designated position, the sampling head 11 with silt is taken down, water is drained through the edge drain hole 18, the sampling head 11 is opened after the water drainage is finished, and soil in the sampling head 11 is poured into a sampling bag to finish sampling.
According to the mechanics principle, the pulley system is a convenient design for labor-saving operation, and the spherical grab bucket is designed for increasing the undercut force; according to the bionics principle, a built-in tooth-shaped groove is designed for the spherical grab bucket; in order to increase the stability of the sampler in water, high-quality steel with a certain thickness is needed to ensure stable sinking in water; and the underwater sampling at different depths is adapted through the length adjustment of the steel wire rope.
The invention can overcome the technical problems of larger underwater resistance, easy side leakage and the like, can be used in water bodies with different depths, and saves time and labor. The method comprises the steps of reducing underwater soil sampling resistance, saving labor when the sludge grab bucket is lifted out of the water surface, increasing resistance to soil and sludge and preventing the soil from sliding out integrally and automatically by adding the toothed inner side groove on the lower edge of the grab bucket.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (9)
1. The utility model provides a spherical soil sampling device under water which characterized in that: comprises a sampling device (10), a rotating bracket device (20) and a driving control device (30);
the sampling device (10) comprises a sampling head (11), a top cover (12) and a lifting handle (13);
the top cover (12) is a circular plate surface formed by connecting two semicircular plates with the same size and shape through a hinge;
the sampling head (11) is in a spherical shape, and a part of the sampling head is cut off by the top cover (12); the plane where the line of the circle center of the top cover (12) and the sphere center of the sampling head (11) is located is perpendicular to the top cover (12), and the plane where the line of the circle center of the top cover (12) and the sphere center of the sampling head (11) is located divides the sampling head into two symmetrical hemispheres;
the lifting handles (13) are symmetrically arranged on the two semicircular plates of the top cover and are respectively arranged at the farthest positions of the plane where the connection line between the circle center of the top cover and the sphere center of the sampling head is located; a lifting handle steel wire rope (131) connected with the driving control device (30) is arranged on the lifting handle (13);
the rotating bracket device (20) comprises a chassis (21) and a rotating arm rod (22); one end of the rotating arm rod (22) is fixed on the chassis, and the other end of the rotating arm rod is connected with the sampling device (10);
the driving control device (30) is arranged on the rotating arm rod (22) and drives the rotating arm rod (22) to rotate towards any direction.
2. The spherical underwater soil sampling device of claim 1, wherein: rivets (14) are arranged on the semicircular plate at one side of the top cover, and hooks (15) are arranged on the semicircular plate at the other side of the top cover.
3. The spherical underwater soil sampling device of claim 1, wherein: the two semi-circular plates of the top cover (12) are connected by hinges; tooth internal grooves (16) are distributed at the connecting positions of the two parts of the sampling head (11).
4. The spherical underwater soil sampling device of claim 1, wherein: a top cover drain hole (17) is distributed on the top cover (12); the sampling head is provided with an edge drain hole (18).
5. The spherical underwater soil sampling device of claim 1, wherein: the rotating arm lever (22) comprises a vertical rotating shaft (221), a thick arm lever (222), a vertical rotating arm lever (223), a middle arm lever (224) and a telescopic arm lever (225);
the vertical rotating shaft (221) is vertically fixed on the chassis (21); the bottom end of the thick arm rod (222) is sleeved in the vertical rotating shaft (221), and the top end of the thick arm rod (222) is fixed with a vertical rotating arm rod (223); the thick arm rod (222) can freely rotate along the vertical central axis of the vertical rotating shaft (221);
one end of the middle arm lever (224) is fixed on the vertical rotating arm lever (223), and the other end is fixed with a telescopic arm lever (225).
6. The spherical underwater soil sampling device of claim 5, wherein: a buckle bolt (226) is arranged at the end part of the side where the telescopic arm rod (225) is connected with the middle arm rod (224); a sawtooth bayonet (227) is arranged on the telescopic arm rod (225); the telescopic arm rod (225) is adjusted to contract or extend along the self axial direction by adjusting the number of clamping teeth of the clamping tooth bayonet (227) clamped by the clamping bolt (226).
7. The spherical underwater soil sampling device of claim 1, wherein: the driving control device (30) comprises a large fixed pulley (31), a rotating handle (32), an arm fixed pulley (33), a tail end fixed pulley (34), a steel wire rope (35) and a movable pulley (36);
the large fixed pulley (31) is fixed on the vertical rotating arm rod (223), and a rotating handle (32) is arranged on the large fixed pulley (31);
the arm lever fixed pulley (33) is arranged on the middle arm lever (224) and is positioned at the end part of one side of the middle arm lever (224) connected with the telescopic arm lever (225);
the tail end fixed pulley (34) is arranged on the telescopic arm rod (225) and is positioned at the end part of the telescopic arm rod (225) far away from the middle arm rod (224);
the large fixed pulley (31), the arm rod fixed pulley (33) and the tail end fixed pulley (34) are connected and matched through a steel wire rope (35);
the movable pulley (36) is connected with and suspended below the tail end fixed pulley (34) through a steel wire rope (35); the movable pulley (36) is connected with a lifting handle (13) of the sampling head through a steel wire rope (35).
8. The spherical underwater soil sampling device of claim 7, wherein: the top end of the movable pulley (36) is provided with an upper end bolt hole (361) for fixing the steel wire rope (35), and the bottom end of the movable pulley is provided with a lower end bolt hole (362) for connecting the sampling device (10).
9. The sampling method of the spherical underwater soil sampling device based on any one of claims 1 to 8, specifically comprising the following steps:
s1, placing the chassis (21) of the rotating bracket device (20) at a proper position, fixing the vertical rotating shaft (221), the thick arm rod (222), the vertical rotating arm rod (223), the middle arm rod (224) and the telescopic arm rod (225), and adjusting the vertical rotating shaft, the thick arm rod (222), the vertical rotating arm rod (223), the middle arm rod (224) and the telescopic arm rod to the proper position;
s2, adjusting the number of clamping teeth of a sawtooth bayonet (227) by adjusting a clamping bolt (226) to adjust the telescopic arm rod (225) to a proper length, fixing one end of a steel wire rope (35) on a large fixed pulley (31), sequentially winding an arm rod fixed pulley (33) and a tail end fixed pulley (34) at the other end of the steel wire rope, and finally fixing the steel wire rope on an upper end bolt hole (361); the rotary handle (32) is shaken to adjust the height of the position of the movable pulley (36);
s3, laterally placing the sampling head (11) to be in an open state, and hanging the hook (15) on the rivet (14); slowly pulling up the lifting handle steel wire rope (131) until the sampling head (11) is completely suspended and is in an open state, and then hanging the lifting handle steel wire rope (131) on a lower end bolt hole (362);
s4, fixing the chassis (21), controlling the vertical rotating arm rod (223) and the middle arm rod (224), and enabling the sampling head (11) to stay above the proper sampling area; then the handle (32) is rotated by hand to enable the sampling head (11) to slowly sink in the water; when the sampling head quickly touches the sediment of the water body, the handle (32) is rotated in a forward rotation manner to loosen the steel wire rope, and the sinking speed of the sampling head (11) is increased so as to increase the downward cutting depth of the sampling head (11);
s5, after the sampling head (11) is cut downwards, the sampling head stays for a period of time, then the rotating handle (32) is slowly shaken in the opposite direction to ensure that the sampling head (11) containing muddy water is slowly lifted after the sampling head (11) is normally closed, and partial water is slowly discharged through a top cover drain hole (17) of the sampling head;
s6, after the sampling head (11) is lifted out of the water surface and is continuously lifted to a reasonable height, the vertical rotating arm rod (223) is slowly rotated to reach a designated position, the sampling head (11) with silt is taken down, water is drained through the edge drain hole (18), the sampling head (11) is opened after the water drainage is finished, soil is poured into the sampling bag, and sampling is finished.
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CN114383890A (en) * | 2022-01-19 | 2022-04-22 | 英飞智信(苏州)科技有限公司 | Rotatable hydraulic sampling head |
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