CN219625119U - Sediment sampling device - Google Patents

Abstract

The utility model discloses a sediment sampling device in the technical field of sediment sampling, which comprises a bucket, a balancing weight and a limiting pull rod; the bucket is an external closed hollow grab bucket structure, the left side and the right side of the bucket can be tightly jointed and butted with each other in an outward opening way, the counterweight rods are arranged on the front side, the rear side and the left side of the bucket, the counterweight blocks can be locked on the counterweight rods in a separated way, the weight of a collecting device for sediment can be increased or decreased according to the size of ocean current, so that the sampling can be stably performed, the counterweight can be reduced when the water current is calm, the labor is saved, the shape of the device is more suitable for the water current, the water current impact is reduced, the streamline structure capable of breaking resistance is formed, the device can be suitable for ocean sampling of waves and tides, the impact stress of the water current is reduced, the sampling is more stable, the supporting clamping rod for the stronger buckling sampling is realized, and the success rate of the sampling is effectively improved.

Description

Sediment sampling device

Technical Field

The utility model relates to the technical field of sediment sampling, in particular to a sediment sampling device.

Background

The monitoring of the surface water substrate (sediment) is mainly used for knowing the accumulation condition of easily-settled and difficultly-degraded pollutants in the water body.

The substrate sampling points should generally avoid the places where the river bed is scoured, the deposition of the substrate is unstable, the water grass is flourishing, and the surface layer substrate is easy to stir. The sampling point of the substrate of the lake (reservoir) is generally arranged at the position where the discharge port of the main river and the pollution source are uniformly mixed with the water of the lake (reservoir).

The sampling amount and the use preservation need to firstly follow the detection method of corresponding items in soil and sediment, the sampling amount of the substrate is generally 1 to 2kg, and when the sampling amount is insufficient for one time, the substrate can be collected around for a plurality of times and the samples are uniformly mixed. The device can be used for sampling in shallow water areas or dry river sections by using plastic spoons or metal shovels without metal to be detected, and is commonly used for sampling in deep water areas by using a digging type mud sampler; the substrate sampling points should be as consistent as possible with the water quality sampling points. When the water is shallow, the bottom is stirred by the impact of the ship body or the mud sampler, or when the river bed is sandy pebble, the sampling point should be replaced for re-sampling. The sampling point cannot be offset too far from the originally set section. The substrate should typically be filled with a grapple during sampling. When the sampler is lifted upwards, if the loss of the sample is excessive, the sample must be recovered again. Sampling, storing and collecting field parallel samples according to the detection method requirement of the corresponding project.

The collected sample and the sampling record table are transported back to a laboratory for detection, but when the collected sample in a deeper water area is collected, the collection is difficult, a columnar sampling tube is generally arranged at present, the suction sampling is carried out, the structure is complex, the equipment is large, the sampling operation difficulty is high, a digging sampling device is also arranged, and the sampling device is fixed in structure and is generally a grab bucket type sampling structure.

The grab bucket structure can sample in calm water area normally, but is difficult to collect normally when sampling in water area with disordered water flow and fast flow speed, the common grab bucket is opened when being on a ship, the buckle mechanism can be separated after bottoming, and then the grab bucket is folded under the action of the counterweight, so that sediment is grabbed and sampled; however, when the water flows in a messy and urgent river, the sea water backflow phenomenon can occur along with the ocean tides, the water flow direction and the flow speed can be influenced, the water flow condition is complex, the collected grab bucket can fly due to the ocean currents and tides, especially the ocean currents on the surface layer and the bottom layer in the ocean are often disordered, even opposite, even the grab bucket with heavy weight can be impacted by the ocean dark current, the ocean surface waves are large, the ship body can be greatly fluctuated due to the water surface waves, the grab bucket is difficult to keep vertically sinking, the sediment sampling difficulty can be increased, the sampling failure rate is high, and the grab bucket can be normally collected once only through repeated sampling.

Based on the above, the present utility model designs a sediment sampling device to solve the above problems.

Disclosure of Invention

The utility model aims to provide a sediment sampling device, which can increase and decrease the weight of the sediment sampling device according to the size of ocean currents, so that the sampling can be stably performed, the counterweight can be reduced during calm water flow, the sampling is more labor-saving, the shape of the device is more suitable for water flow, the water flow impact is reduced, a streamline structure capable of breaking resistance is formed, the device can be suitable for ocean sampling of waves and tides, the impact stress of the water flow is reduced, the sampling is more stable and the supporting clamping rod of the sediment sampling is locked more firmly, the sampling failure caused by the fact that the clamping device is separated by the wave impact is effectively avoided, and the success rate of the sampling is effectively improved.

The utility model is realized in the following way: a sediment sampling device comprising:

the device comprises a bucket, a balancing weight and a limiting pull rod;

the bucket is of a grab bucket structure with a hollow inside and a closed outside, two sides of the bucket can be connected into an integral structure through a rotating shaft in an openable and closable manner, and the left side and the right side of the bucket can be mutually and tightly attached and butted in an outwards openable manner;

the middle of the tips at the left side and the right side of the bucket is wide, and the bottom of the bucket is arc-shaped;

the top of the left side and the right side of the bucket are respectively provided with a holding rod, and each holding rod is fixedly locked with a sampling pull rope

The counterweight rods are arranged at the front, the back, the left and the right of the bucket, the counterweight rods vertically protrude outside the bucket, the counterweight blocks are of flat block structures, and the counterweight blocks can be locked on the counterweight rods in a separated mode;

the limiting pull rod is a straight rod, one end of the limiting pull rod is rotatably arranged at the top of one side of the bucket, and the other end of the limiting pull rod can be detachably locked at the top of the other side of the bucket;

when the bucket is opened, the left side and the right side of the bucket are supported and clamped through the limiting pull rods.

Further, the left and right sides of scraper bowl set up for the pivot symmetry, the left side bottom inner wall butt joint department of scraper bowl has set up interior step, the right side bottom outer wall butt joint department of scraper bowl has set up outer step, interior step and outer butt joint of laminating each other of step, interior step and outer step are clearance fit, the clearance of interior step and outer step does not exceed 1mm.

Further, a hinged support is arranged at the top of the left side of the bucket, and the left end of the limiting pull rod is rotatably installed with the hinged support;

the top of the right side of the bucket is fixedly provided with a locking pin, the locking pin is an iron round rod which is horizontally arranged, the top of the right end of the limiting pull rod is provided with a circular arc-shaped clamping groove, and the clamping groove and the locking pin can be clamped in a separated mode;

the top of the clamping groove can also be turned over to open to cover an upper retaining ring, and the upper retaining ring is also connected with a dislocation rope;

the upper retaining ring is a semicircular retaining ring, the bottom of the upper retaining ring is provided with an opening, the upper retaining ring can be loosened and locked tightly with the limiting pull rod, a magnetic sheet is further arranged on the inner cambered surface of the upper retaining ring, the magnetic sheet is a strong magnet, and the limiting pull rod is also an iron long rod.

Further, the weight balance rods are screw rods, the weight balance rods are perpendicular to the outer side wall of the bucket, one weight balance rod is arranged on each of the front side and the rear side of each bucket, and the weight balance rods on the grab bucket formed by the two buckets are symmetrically arranged in the front-rear direction and the left-right direction;

the balancing weight is a cake-shaped lead block, and is detachably locked with the balancing weight rod through threads.

Further, the sampling pull rope and the dislocation rope are ropes with the length not less than 50 meters, and length scale marks are marked on the sampling pull rope.

The beneficial effects of the utility model are as follows: 1. the utility model forms a grab bucket-shaped structure through the open bucket, can conveniently grasp sediment, and can conveniently open and close the sediment, so that the sediment in depth can be conveniently grasped, the appearance of the device is changed into a long and narrow structure with the middle wide at the two ends, so that the impact area of water flow is reduced, the device is more streamline, the resistance is reduced, the device is not easy to deviate due to the impact of ocean current, the wave is broken towards the water flow automatically due to the design of the shape, the stronger water flow impact is adapted, and the device can normally sample in a water area with strong flow speed;

2. the device can achieve the aim of conveniently adjusting the overall weight of the device by adding the balancing weights with different weights and numbers on the balancing weight rod, can adjust the balancing weights according to water flows and stormy waves with different sizes, and is more flexible to use;

3. the device has increased spacing pull rod to having increased the last buckle that has the magnetic sheet on spacing pull cylinder, can effectively locking spacing pull rod and bayonet lock, effectively avoiding because the water flow is big with the condition that spacing pull rod assaults the break away from, make it carry out the trigger type mechanism of manual control, thereby ensure that this device unblock again after touching the end, effectually fold on the deposit and snatch, also effectively avoid the bucket to sink the sampling failure that the in-process closure leads to in water, improve sampling success rate.

Drawings

The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic top view of the overall structure of the present utility model;

FIG. 2 is a schematic front view of the overall structure of the present utility model;

FIG. 3 is a schematic view of the front structure of the utility model in the open latch state;

FIG. 4 is a schematic view of the engaging structure of the latch slot and the latch pin according to the present utility model;

FIG. 5 is a schematic view of the overall bottom view structure of the present utility model;

FIG. 6 is a front view of the interior of the intermediate opening of the bucket of the present utility model;

fig. 7 is an external side schematic view of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

the device comprises a bucket 1, a holding rod 11, a sampling pull rope 12, an outer wrapping step 13, an inner step 14, a rotating shaft 15, a balancing weight 2, a balancing weight 21, a balancing weight rod 3, a limiting pull rod 31, a locking pin 32, a clamping groove 33, an upper buckle 33, a magnetic sheet 34, a dislocation rope 35 and a hinge support 36.

Detailed Description

Referring to fig. 1 to 7, the present utility model provides a technical solution: a sediment sampling device comprising:

the bucket 1, the balancing weight 2 and the limiting pull rod 3;

the bucket 1 is of a grab bucket structure with a hollow inside and a closed outside, two sides of the bucket 1 are connected into an integral structure through a rotating shaft 15 in an openable and closable manner, and the left side and the right side of the bucket 1 can be tightly clamped with each other in an outwards openable manner;

the middle of the tips of the left side and the right side of the bucket 1 is wide, and the bottom of the bucket 1 is arc-shaped;

the top parts of the left side and the right side of the bucket 1 are respectively provided with a holding rod 11, and each holding rod 11 is fixedly locked with a sampling pull rope 12

The counterweight rods 21 are arranged on the front, the back, the left and the right of the bucket 1, the counterweight rods 21 vertically protrude outside the bucket 1, the counterweight blocks 2 are of a flat block structure, and the counterweight blocks 2 can be locked on the counterweight rods 21 in a separated mode;

the limiting pull rod 3 is a straight rod, one end of the limiting pull rod 3 is rotatably arranged at the top of one side of the bucket 1, and the other end of the limiting pull rod 3 can be detachably locked at the top of the other side of the bucket 1;

when bucket 1 opens, the left and right sides of bucket 1 supports the chucking through spacing pull rod 3, when bucket 1 and spacing pull rod 3 loosen, bucket 1 is closed under the action of gravity, can increase and decrease the weight of the collection system of deposit according to the size of ocean current, make the sampling can be enough stably sample, can reduce the counter weight when calm rivers again, more laborsaving sample, this device shape is more suitable for rivers in addition, reduce the rivers and strike, form the streamline structure that can break the resistance, thereby can be applicable to the ocean sampling of wave and morning and evening tides, reduce the impact atress of rivers, the sample is more stable, the support bayonet catch of more firm padlock sampling, effectively avoid buckle device to be broken away by the wave impact, and the sampling that leads to fails, effectively improve the success rate of sampling.

The left side and the right side of the bucket 1 are symmetrically arranged relative to the rotating shaft 15, an inner step 14 is arranged at the butt joint position of the inner wall of the left side bottom of the bucket 1, an outer wrapping step 13 is arranged at the butt joint position of the outer wall of the right side bottom of the bucket 1, the inner step 14 and the outer wrapping step 13 are mutually bonded and butted, the inner step 14 and the outer wrapping step 13 are in clearance fit, the clearance between the inner step 14 and the outer wrapping step 13 is not more than 1mm, the structure is stable, the butt joint surfaces on the left side and the right side of the bucket 1 are required to be tightly butted and matched, the sealing performance requirement of the butt joint surfaces on the two sides of the bucket 1 is high, the surfaces are smooth and flat, water can be discharged after the butt joint surfaces are closed and aligned, the joint surfaces can be more flat and sealed through the balancing weight 2, the structure is more convenient, the sampling efficiency is high, and the sealing performance is good;

the top of the left side of the bucket 1 is provided with a hinged support 36, and the left end of the limit pull rod 3 is rotatably arranged with the hinged support 36;

a locking pin 31 is fixedly arranged at the top of the right side of the bucket 1, the locking pin 31 is an iron round rod which is horizontally arranged, a circular arc-shaped clamping groove 32 is formed in the top of the right end of the limit pull rod 3, and the clamping groove 32 and the locking pin 31 can be clamped in a separated mode;

the top of the clamping groove 32 can also be turned over and opened to cover the upper retaining ring 33, the clamping groove 32 and the upper retaining ring 33 form a ring-shaped structure of a buckle lock, and the right end of the upper retaining ring 33 is also connected with a dislocation rope 35;

the upper retaining ring 33 is an elastic semicircular retaining ring, the bottom of the upper retaining ring 33 is opened, the upper retaining ring 33 can be loosened and tightly locked with the limiting pull rod 3, the magnetic sheet 34 is further arranged on the inner cambered surface of the upper retaining ring 33, the magnetic sheet 34 is a strong magnet, the limiting pull rod 3 is also an iron long rod, the clamping and limiting pin 31 can be stably clamped and limited, through the semicircular retaining ring structure of the upper retaining ring 33, the bottom of the upper retaining ring 33 is locked at the bottom of the right end of the limiting pull rod 3, only the turnover can be carried out, the vertical upward jacking is difficult to jack, the clamping lock pin 31 is abutted against the clamping groove 32, the turnover can not be carried out, only the clamping lock of the right end of the upper retaining ring 33 and the bottom of the right end of the limiting pull rod 3 can be realized, only the upward force can lead the right end of the upper retaining ring 33 to be clamped and tightly locked with the bottom of the right end of the limiting pull rod 3, the outer end of the upper retaining ring 33 to be directly pulled by pulling the dislocation rope 35, the left end is also rotationally connected with the limiting pull rod 3, the turnover stress is formed, the upper retaining ring 33 is enabled to be turned over, the upper retaining ring 33 is enabled to be separated from the clamping and the clamping lock pin 3, the clamping groove 32 can be conveniently closed, and the clamping structure can be conveniently controlled, and the clamping device can be opened, and the clamping lock can be opened, and the clamping device 32 can be conveniently and opened;

the counterweight rods 21 are screw rods, the counterweight rods 21 are perpendicular to the outer side wall of the bucket 1, one counterweight rod 21 is respectively arranged on the front side and the rear side of each bucket 1, and the counterweight rods 21 on the grab bucket formed by the two buckets 1 are symmetrically arranged in the front-rear direction and the left-right direction;

the balancing weight 2 is a cake-shaped lead block, and the balancing weight 2 is detachably locked with the balancing weight rod 21 through threads, so that the balancing weight 2 can be conveniently increased or decreased through the structure, the sinking posture of the bucket 1 can be flexibly adjusted, and the use is more flexible;

the sampling pull rope 12 and the dislocation rope 35 are ropes with the length not less than 50 meters, and the sampling pull rope 12 is marked with length scale marks, so that the deeper water area can be sampled, and the depth of the water area can be conveniently checked.

In one embodiment of the utility model:

the technical problems encountered by the embodiment of the utility model are as follows: 1. the existing sediment collection mode is generally that a dredger is used for sampling in a deep water area, the mode can be used in a conventional water area, once water flows at a collection point are layered, particularly when the directions of water flows in the upper, middle and lower directions are different, the water flows are difficult to sample, the water flows can be sampled in a calm lake, but the layered ocean currents in the ocean are frequent, particularly the upper layer stormy waves are large, the middle layer ocean currents flow into the ocean in an inverted mode, the water flows at the bottom layer are calm and stable, and the water flows at the bottom layer can be sampled, but the conventional sampling device is insufficient; 2. the river at the sea entrance is more disordered, the ocean current is changed at any time, when the sea is in high tide, the sea water flows back into the river, when the sea is in low tide, the river water flows into the sea in the east direction, the water flow is unstable, but more clay sediment still exists, and the sediment cannot be flushed along with the ocean current, so that the sediment can be used as a better sampling point, but the sampling is difficult due to the flushing of the water flow; 3. the existing collector is fixed in structure, generally a hook lock catch breaks away from the sampler after bottoming, the collector is folded for collection, the hook structure is unstable and is easy to separate, water flow can separate when large, hard objects touching the bottom of a water area can separate, but the hard objects, particularly reefs and corals, cannot be collected, and therefore a controllable collection device is needed to change the trouble.

The technical problems solved by the utility model are as follows: sediment collection system that can be suitable for more waters, especially the great waters of ocean current sample, the sampling counter weight is nimble, and the adjustment is convenient, can carry out controllable snatch sampling, and the sampling success rate is high.

The technical effects are realized as follows: 1. the bucket 1 of the device is of a long and narrow structure with the middle wide at the two ends, so that the impact area of water flow is reduced, the resistance is reduced, the bucket is not easy to deviate due to the impact of ocean current, the side stress is high, the two ends are stressed little, the impact of the water flow can be automatically adjusted in the impact direction, the tip can be stressed and then automatically break waves towards the water flow, especially in the ocean, the upper ocean current is impacted to the shore, the lower ocean current returns to the ocean, the middle wide at the two ends of the device is suitable for the ocean current on the upper layer and the lower layer, the returned ocean current can be adapted to the impact of the water flow, and the water area device can normally sample the water flow at the strong flow rate;

2. the device is added with a plurality of counterweight rods 21, and can adjust the counterweight according to water flows and stormy waves with different sizes by adding the counterweight blocks 2 with different weights and numbers on the counterweight rods 21 so as to achieve the aim of conveniently adjusting the overall weight of the device, so that the device is more flexible to use, and the counterweight blocks 2 with different weights are properly added according to the inclination and the azimuth of the water flows, so that the device can keep a certain angle deflection when sinking, adapt to the oblique impact of the water flows, and is more flexible to use;

3. the device has increased spacing pull rod 3 to having increased the last buckle 33 that has magnetic sheet 34 on spacing pull rod 3, can effectively locking spacing pull rod 3 and card lockpin 31, effectively avoid because the water flow is too big with the condition that spacing pull rod 3 assaults to break away from, make the scraper bowl fold through manual control re-triggering mechanism and snatch the sample, the reef or other hard thing that meet the rivers bottom when effectively avoiding this device to sample can't gather also the condition of foling, only need pull and get dislocation rope 35, can accomplish the action of snatching, thereby ensure that this device unblock again after touching the bottom, effectually fold on the deposit and snatch, also effectively avoid scraper bowl 1 at the sampling failure that the in-process closure leads to of aquatic sinking, improve the sampling success rate.

The technical scheme in the embodiment of the utility model aims to solve the problems, and the overall thought is as follows:

in order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

When the utility model is manufactured, the bucket 1, the balancing weight 2 and the limiting pull rod 3 are required to be manufactured;

the bucket 1 is of a grab bucket structure with a hollow inside and a closed outside, two sides of the bucket 1 are connected into an integral structure through a rotating shaft 15 in an openable and closable manner, and the left side and the right side of the bucket 1 can be tightly clamped with each other in an outwards openable manner;

the middle of the tips of the left side and the right side of the bucket 1 is wide, and the bottom of the bucket 1 is arc-shaped; the bucket 1 is of two clamping jaw structures, the side face of the bucket 1 is a circular arc grab bucket, the widest middle part of the bucket 1 can be opened through the rotating shaft 15, and the bucket can be pressed together under the action of the balancing weight 2 to grab sediment, the structure is the same as that of a grab bucket of a crane, but the two sides of the bucket of the device are narrow tips, the middle of the bucket is widened, the bucket 1 of the device is of a conical structure with the two wide ends pointing towards the two sides, the bottom of the bucket is circular arc, the top of the bucket is diamond or oval, and the bucket is streamline, so long as the bucket is capable of reducing the impact of waves and water flow and reducing the resistance and the resistance of water flow;

the left side and the right side of the bucket 1 are symmetrically arranged relative to the rotating shaft 15, an inner step 14 is arranged at the butt joint of the inner wall of the left side bottom of the bucket 1, an outer step 13 is arranged at the butt joint of the outer wall of the right side bottom of the bucket 1, the inner step 14 and the outer step 13 are mutually bonded and butt joint, the inner step 14 and the outer step 13 are in clearance fit, the clearance between the inner step 14 and the outer step 13 is not more than 1mm, thus the tightness of the bucket 1 can be improved, sediment can be grabbed and stored, the leakage caused by water flow impact can be avoided, and the effective sampling quantity can be improved,

the top of the left side and the right side of the bucket 1 are provided with holding rods 11, and a sampling pull rope 12 is fixedly locked on each holding rod 11;

the counterweight rods 21 are arranged on the front, the back, the left and the right of the bucket 1, the counterweight rods 21 vertically protrude outside the bucket 1, the counterweight blocks 2 are of a flat block structure, and the counterweight blocks 2 can be locked on the counterweight rods 21 in a separated mode; the counterweight rods 21 are screw rods, the counterweight rods 21 are perpendicular to the outer side wall of the bucket 1, one counterweight rod 21 is respectively arranged on the front side and the rear side of each bucket 1, and the counterweight rods 21 on the grab bucket formed by the two buckets 1 are symmetrically arranged in the front-rear direction and the left-right direction; the balancing weight 2 is a cake-shaped lead block, and the balancing weight 2 is detachably locked with the balancing weight rod 21 through threads;

the limiting pull rod 3 is a straight rod, one end of the limiting pull rod 3 is rotatably arranged at the top of one side of the bucket 1, and the other end of the limiting pull rod 3 can be detachably locked at the top of the other side of the bucket 1; when the bucket 1 is opened, the left side and the right side of the bucket 1 are supported and clamped through the limiting pull rod 3;

the top of the left side of the bucket 1 is provided with a hinged support 36, and the left end of the limiting pull rod 3 is rotatably arranged with the hinged support 36;

a locking pin 31 is fixedly arranged at the top of the right side of the bucket 1, the locking pin 31 is an iron round rod which is horizontally arranged, a circular arc-shaped clamping groove 32 is formed in the top of the right end of the limit pull rod 3, and the clamping groove 32 and the locking pin 31 can be clamped in a separated mode;

the top of the clamping groove 32 can also be turned over to open a cover-closing retaining ring 33, and the upper retaining ring 33 is also connected with a dislocation rope 35; the upper snap ring 33 is an elastic snap ring made of elastic sheet material, and can be locked and deformed to be opened when pulled.

The upper retaining ring 33 is a semicircular retaining ring, the bottom of the upper retaining ring 33 is provided with an opening, the upper retaining ring 33 can be loosened and tightly locked with the limit pull rod 3, the intrados of the upper retaining ring 33 is also provided with a magnetic sheet 34, the magnetic sheet 34 is a strong magnet, and the limit pull rod 3 is also an iron long rod. The limiting pull rod 3 can be adsorbed through the magnetic sheet 34, the limiting pull rod 3 can be clamped through the upper retaining ring 33, so that the clamping lock pin 31 is effectively locked in the clamping groove 32 of the limiting pull rod 3, the condition of unhooking outside control is effectively avoided, the clamping groove 32 is opened upwards, when the bucket 1 is in bottoming collision, the clamping groove 32 is separated from the clamping lock pin 31, the clamping lock pin 31 and the clamping groove 32 can be completely separated only by pulling the upper retaining ring 33, two sides of the bucket 1 are propped up through the limiting pull rod 3, when the limiting pull rod 3 is not supported any more, two sides of the bucket 1 can be folded inwards under the action of the balancing weight 2, grabbing is formed, but if the limitation of the upper retaining ring 33 and the magnetic sheet 34 is not met, the clamping lock pin is easily separated only by bottoming, so that grabbing points are not aligned, reefs or coral are grabbed, sampling success rate can be influenced, and the device can automatically control grabbing operation through the upper retaining ring 33, and is more accurate.

Before the bucket 1 touches the bottom, the balancing weights 2 on two sides of the bucket 1 can be pressed downwards, two sides of the bucket 1 can be turned downwards along the rotating shaft 15 to form a closed state, at the moment, two sides of the bucket 1 are provided with outwards turned pulling forces, the pulling forces can pull the limiting pull rod 3 of the hook, the limiting pull rod 3 and the locking pin 31 are mutually clamped and cannot be separated, the pulling forces are unstable by virtue of the pulling forces of the semi-hook, and once the bucket 1 is accepted, the pulling forces are reduced, the limiting pull rod 3 can be rotated downwards to be separated, and the separation is uncontrolled.

The sampling pull rope 12 and the dislocation rope 35 are ropes with the length not lower than 50 meters, so that the device can sample in deeper water areas, the application range is wide, and scale marks are required to be marked on the sampling pull rope 12, so that the submerged depth of the bucket 1 can be conveniently judged.

When the device is used, the bucket 1 is firstly opened, the clamping grooves 32 of the limiting pull rod 3 are clamped with the clamping pins 31, at the moment, the limiting pull rod 3 is already used for expanding the two sides of the bucket 1, the state is shown in figure 3, then the upper retaining ring 33 is turned over and buckled at the right end of the limiting pull rod 3, at the moment, the magnetic sheet 34 is used for sucking the limiting pull rod 3, limiting the position relation between the clamping pins 31 and the clamping grooves 32, locking is ensured, then the bucket 1 is put into water, the portable sampling pull rope 12 is carried out, the bucket 1 is sunk, in the sunk process, the tips at the two ends face the direction of water flow, waves and ocean currents are punctured, the impact received is reduced, the streamline can reduce the resistance of the water flow, the sunk continuously, the device is still the tip when the returned water flow is reversed, the two ends of the device can adapt to the water flow, when the water flow is changed, the resistance is large, the two ends of the device can automatically rotate to the middle position with small stress and face the water flow, and the sunk device is more stable;

after the device sinks to touch the bottom, the weight of the bucket 1 is supported by the water bottom, the overturning supporting force to the two ends, which is received by the limit pull rod 3, is reduced, no tensioning force exists between the clamping groove 32 and the clamping pin 31, when the sampling pull rope 12 is pulled by hand, the sampling pull rope 12 is pulled up again by feeling hard objects to suspend the bucket 1, the position is replaced for sampling, when the hand is soft objects, the vibration feedback is unclear, the vibration is small, the dislocation rope 35 can be pulled, the upper retaining ring 33 is separated from the limit pull rod 3, the clamping pin 31 is absorbed and taken out of the clamping groove 32 together, the clamping pin 31 is conveniently separated from the limit pull rod 3, and the bucket 1 is pulled by the gravity of the balancing weight 2 for sampling;

after the sampling is completed, the outer Bao Jie is embedded with the inner step 14, and because the gap is 0.2mm, the butt joint is easy to realize while the matching is tight, the butt joint section of the bucket 1 is tightly matched, the tight butt joint of the side walls is ensured, the alignment and the sealing are effectively realized, sediment can be conveniently grabbed and collected to the water surface, and in the whole process, because the bucket 1 is folded and sealed, water flow impact cannot enter the cavity, the sediment sampling accuracy is high, the collected water is less, the sediment proportion is high, and the sampling data is more accurate.

If the sample is unqualified, the water is likely to flow through the bucket, the proportion of the water sample is larger, or the bucket 1 cannot be folded due to ocean current impact, the weight and the quantity of the balancing weights 2 can be increased, so that the purpose of accurate sampling is achieved, the operation is flexible, the use is convenient, in general, according to the size of the bucket 1, when the bucket is used for sampling 2kg, the number of the balancing weights 21 is four, the number of the balancing weights 21 can be increased according to actual conditions, the balancing weights 21 can be locked on two sides or the bottom of the bucket 1 through threads, the tip diversion effect cannot be blocked, the balancing weights 2 are required to be arranged close to two ends of the bucket 1, and thus the balancing weights 2 with the same weight can have larger overturning force.

The upper and lower sides of the device are shown for convenience of explanation, that is, the upper, lower, left and right sides of the bucket 1 in a normal sinking state, that is, the left and right sides are the tips of the two sides.

In addition, in the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. are presented, the indicated orientation or positional relationship is based on that shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.

Claims (5)

1. A sediment sampling device, comprising: the device comprises a bucket (1), a balancing weight (2) and a limiting pull rod (3);

the bucket (1) is of a grab bucket structure with a hollow inside and a closed outside, two sides of the bucket (1) can be connected into an integral structure through a rotating shaft (15) in an openable and closable manner, and the left side and the right side of the bucket (1) can be tightly clamped with each other in an outwards openable manner;

the middle of the tips of the left side and the right side of the bucket (1) is wide, and the bottom of the bucket (1) is arc-shaped;

the top of the left side and the right side of the bucket (1) are provided with holding rods (11), and each holding rod (11) is fixedly locked with a sampling pull rope (12)

The counterweight rods (21) are arranged on the front, the back, the left and the right of the bucket (1), the counterweight rods (21) vertically protrude outside the bucket (1), the counterweight blocks (2) are of flat block structures, and the counterweight blocks (2) can be locked on the counterweight rods (21) in a separated mode;

the limiting pull rod (3) is a straight rod, one end of the limiting pull rod (3) is rotatably arranged at the top of one side of the bucket (1), and the other end of the limiting pull rod (3) is detachably locked at the top of the other side of the bucket (1);

when the bucket (1) is opened, the left side and the right side of the bucket (1) are supported and clamped through the limiting pull rod (3).

2. A sediment sampling device according to claim 1, characterized in that: the left and right sides of scraper bowl (1) set up for pivot (15) symmetry, the left side bottom inner wall butt joint department of scraper bowl (1) has set up interior step (14), the right side bottom outer wall butt joint department of scraper bowl (1) has set up outsourcing step (13), interior step (14) and outer Bao Jie (13) laminating butt joint each other, interior step (14) and outer Bao Jie (13) are clearance fit, the clearance of interior step (14) and outer Bao Jie (13) does not exceed 1mm.

3. A sediment sampling device according to claim 2, characterized in that: the top of the left side of the bucket (1) is provided with a hinged support (36), and the left end of the limiting pull rod (3) is rotatably installed with the hinged support (36);

the top of the right side of the bucket (1) is fixedly provided with a locking pin (31), the locking pin (31) is an iron round rod which is horizontally arranged, the top of the right end of the limit pull rod (3) is provided with a circular arc-shaped clamping groove (32), and the clamping groove (32) and the locking pin (31) can be clamped in a separated mode;

the top of the clamping groove (32) can also be turned over to open to cover an upper retaining ring (33), and the upper retaining ring (33) is also connected with a dislocation rope (35);

the upper retaining ring (33) is a semicircular retaining ring, the bottom of the upper retaining ring (33) is provided with an opening, the upper retaining ring (33) can be loosened and tightly locked with the limiting pull rod (3), a magnetic sheet (34) is further arranged on the intrados of the upper retaining ring (33), the magnetic sheet (34) is a strong magnet, and the limiting pull rod (3) is also an iron long rod.

4. A sediment sampling device according to claim 1, characterized in that: the weight balancing rods (21) are screw rods, the weight balancing rods (21) are perpendicular to the outer side walls of the buckets (1), one weight balancing rod (21) is arranged on each of the front side and the rear side of each bucket (1), and the weight balancing rods (21) on the grab bucket formed by the two buckets (1) are symmetrically arranged in the front-rear direction and the left-right direction;

the balancing weight (2) is a cake-shaped lead block, and the balancing weight (2) is detachably locked with the balancing weight rod (21) through threads.

5. A sediment sampling device according to claim 1, characterized in that: the sampling pull rope (12) and the dislocation rope (35) are ropes with the length not less than 50 meters, and length scale marks are marked on the sampling pull rope (12).