CN119534020B - Marine survey sediment sampler - Google Patents
Marine survey sediment sampler Download PDFInfo
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- CN119534020B CN119534020B CN202510097923.1A CN202510097923A CN119534020B CN 119534020 B CN119534020 B CN 119534020B CN 202510097923 A CN202510097923 A CN 202510097923A CN 119534020 B CN119534020 B CN 119534020B
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- sampling tube
- rod
- baffle
- top plate
- sampling
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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
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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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)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the technical field of soil sampling, in particular to a marine survey sediment sampler. The sampling device comprises a sampling tube, wherein the bottom end of the sampling tube is a sampling port, grips are arranged on two sides of the top end of the sampling tube, a blocking mechanism is rotatably arranged at the bottom end of the sampling tube, a hit portion is arranged at the top end of the sampling tube, the blocking mechanism blocks the sampling port in a rotating mode, the hit portion comprises a top plate fixed at the top end of the sampling tube, a sliding rod is arranged above the top plate, and a transmission piece is arranged between the sliding rod and the blocking mechanism. In the marine survey sediment sampler, the clutch control assembly senses the downward moving depth of the sampling tube, so that after the sampling tube moves down to the designated depth, the clutch control assembly changes the non-sliding connection state between the hit plate and the top plate into the sliding connection state by utilizing the reaction force of the ground, and the force of the next hit on the hit plate by a worker is transmitted to the plugging mechanism, so that the plugging mechanism plugs the sampling port by the hit force.
Description
Technical Field
The invention relates to the technical field of soil sampling, in particular to a marine survey sediment sampler.
Background
The soil carbon sink investigation refers to a process of scientifically and accurately estimating and evaluating the carbon sink capacity of the soil. The method for investigating the carbon sink of the soil comprises a model method, a soil carbon balance method, a maximum value method and the like, and the method involves the step of deep soil sampling during the investigation of the carbon sink of the soil.
The existing sampler is mostly in a cylindrical shape, the lower end of the sampler is provided with a sampling port for collecting soil, and the sampling pipe is knocked by using a rubber hammer, so that the sampler is inserted into the ground to collect the soil into the sampler.
When sampling the sediment of plants growing at sea (such as seaweeds), the soil under the ground is soft due to the influence of moisture on the inter-tidal zone, and the collected soil is easy to fall from the sampling port at the lower end of the sampler.
In the related art, by arranging the plugging mechanism at the sampling port, the sampling port is opened when the sampler is inserted into the ground, so that soil enters, and the sampling port is closed when the sampler moves upwards, so that the soil is prevented from falling from the sampling port. But the efficiency of sampling is also affected when setting up shutoff mechanism. Specifically, when sampling is performed, the sampling tube needs to be knocked by the rubber hammer, so that the sampling tube moves down to a specified distance, then the knocking of the sampling tube is stopped, and then the plugging mechanism is controlled.
Therefore, when the plugging mechanism is added, after the sampling tube is knocked by a worker, the plugging mechanism is also required to be independently controlled, and the operation times are increased. Carbon sink sample collection requires multiple samples in a single area, and therefore, an increase in the number of individual operations affects the overall sampling efficiency. Moreover, in order to ensure the blocking effect, the blocking mechanism is basically of a conical structure, which results in the need to rotate when the sampling port is opened and closed, and when the blocking mechanism is under the ground, all the surrounding soil is around the blocking mechanism, and the soil provides resistance for the blocking mechanism, so that the rotation is difficult.
Therefore, how to use the knocking force of the rubber hammer to drive the sampling tube to move downwards and drive the plugging mechanism to work is an important problem facing to improving the sampling efficiency.
Disclosure of Invention
The invention aims to provide a marine survey sediment sampler for solving the problems in the background technology.
In order to achieve the aim, the marine survey sediment sampler comprises a sampling tube, a plugging mechanism and a sampling device, wherein the bottom end of the sampling tube is provided with a sampling port, and grips are arranged on two sides of the top end of the sampling tube;
The device comprises a sampling pipe, a receiving part, a blocking mechanism, a soil sampling mechanism and a soil sampling mechanism, wherein the receiving part comprises a top plate fixed at the top end of the sampling pipe and a sliding rod positioned above the top plate, a transmission part is arranged between the sliding rod and the blocking mechanism, a sliding connection state and a non-sliding connection state are arranged between the sliding rod and the top plate;
The device comprises a sampling pipe, a sliding rod, a driving piece, a sealing mechanism and a clutch control assembly, wherein the sliding rod is connected with the sliding rod through the driving piece, the sealing mechanism is connected with the sliding rod through the driving piece, and the sealing mechanism is connected with the sliding rod through the driving piece.
The sliding cavity is internally provided with a sliding cavity, one end of the sliding cavity is communicated with the through hole, the other end of the sliding cavity penetrates through the outer ring of the top plate, a bolt is arranged in the sliding cavity in a sliding mode, a reset spring which is used for elastically connecting the top of the bolt and the outer ring of the top plate is arranged between the top of the bolt and the outer ring of the top plate, and the bolt is always inserted into the concave of the sliding rod under normal state through the elasticity of the reset spring to force the sliding rod and the top plate to be in a non-sliding connection state;
When one end of the bolt is inserted into the concave of the slide bar, the other end of the bolt protrudes out of the outer ring of the top plate, and a chute is arranged at the bottom of the protruding part of the bolt, so that the plugging mechanism drives the bolt to the outside of the top plate through the chute, and the bolt is separated from the concave of the slide bar;
the bottom of the top plate is fixedly connected with the sampling tube through a supporting rod;
The top of the sliding rod is provided with a hit plate.
As a further improvement of the technical scheme, the clutch control assembly comprises a telescopic rod which is longitudinally arranged, the telescopic rod is longitudinally arranged on the outer ring of the sampling tube in a sliding mode, and the top end of the telescopic rod is located at the bottom of the chute.
As a further improvement of the technical scheme, the telescopic rod comprises a sleeve and a straight rod which are connected with each other in a sliding way, wherein the outer ring of the sleeve is provided with a threaded knob, the straight rod is locked through the threaded knob, so that the sliding connection between the straight rod and the sleeve is changed into fixed connection;
When the straight rod moves upwards, the straight rod moves upwards and drives the bolt to be separated from the concave part of the sliding rod through the chute, so that the sliding rod and the top plate are in sliding connection.
As a further improvement of the technical scheme, an energy storage spring is arranged between the bottom of the sleeve and the top of the blocking plate, the elastic force of the energy storage spring is larger than that of the reset spring, and the sleeve is longitudinally and slidably connected with the blocking plate.
As a further improvement of the technical scheme, the bottom of the sampling tube is provided with a mounting ring made of metal materials.
As a further improvement of the technical scheme, the transmission piece is a driven rod, the top end of the driven rod is fixedly connected with the bottom of the impacted plate, and the bottom end of the driven rod extends to the bottom of the sampling tube.
As a further improvement of the technical scheme, the plugging mechanism comprises a plurality of baffles, the baffles are arranged in an annular array around the center of the bottom end of the sampling tube, the top of each baffle is rotationally connected with the bottom end of the mounting ring, and the top end of each baffle is provided with a pressed block with one end extending towards the outer ring of the mounting ring;
the plurality of baffles are folded to form a conical structure;
the outer ring of the mounting ring is longitudinally provided with a pressing ring in a sliding manner, the top of the pressing ring is fixedly connected with the bottom end of the driven rod, and when the pressing ring moves downwards, the pressing ring applies acting force to the baffle plate to rotate towards the center of the sampling tube through the pressed block.
As a further improvement of the technical scheme, the plugging mechanism comprises a first baffle and a second baffle which are positioned at the bottom of the mounting ring, and one ends of the first baffle and the second baffle are both rotatably arranged in a fixed shaft arranged at the bottom of the mounting ring;
The first baffle plate and the second baffle plate are both in C-shaped structures, and are symmetrically arranged;
the driven rods are symmetrically arranged on two sides of the fixed shaft, and wedge-shaped blocks are fixedly arranged at the bottom ends of the driven rods;
Under the normal state, first separation blade and second separation blade all are located between the outer lane and the inner circle of collar bottom, works as when the driven lever moves down, driven lever passes through wedge drive first separation blade and second separation blade to the center rotation of sampling port to the shutoff is carried out the sampling port.
As a further improvement of the technical scheme, the handles are symmetrically arranged on two sides of the sampling tube, the approaching ends of the two handles are fixedly connected with clamping rings, and the two clamping rings are connected with the outer ring of the sampling tube through bolts;
The support rods are fixedly arranged at the tops of the clamping rings, and the top plate is fixedly connected with the support rods at the tops of one of the clamping rings;
the blocking plate is made of flexible materials and is of a C-shaped annular structure as a whole;
the mounting ring is detachably connected with the bottom of the sampling tube.
Compared with the prior art, the invention has the beneficial effects that:
1. in the marine survey sediment sampler, the clutch control assembly senses the downward moving depth of the sampling tube, so that after the sampling tube moves down to the designated depth, the clutch control assembly changes the non-sliding connection state between the hit plate and the top plate into the sliding connection state by utilizing the reaction force of the ground, and the force of the next hit on the hit plate by a worker is transmitted to the plugging mechanism, so that the plugging mechanism plugs the sampling port by the hit force. Therefore, the worker only needs to knock the hit plate, and the operation mode does not need to be changed after knocking, so that the operation times of the worker are reduced, and the closure efficiency of the plugging mechanism when facing soil is reduced.
2. In this marine survey sediment sampler, because the position of blocking plate corresponds the depth of moving down of sampling tube, after the straight-bar passes through the chute and drives the bayonet lock, blocking plate just can't continue to move up, and at this moment, when the sampling tube continued to move down, because blocking plate is located ground to provide the resistance for the sampling tube that continues to move down, avoid the sampling tube to appear continuing to move down by a wide margin the phenomenon of moving down after reaching the depth of moving down, prevent the oversampling to soil.
3. In this marine survey sediment sampler, when facing harder soil, through setting up shutoff mechanism into the separation blade of two C font, utilize the horizontal cutting of two separation blades to come to cut off soil to block the soil of sampling connection top, prevent that the soil in the sampling tube from dropping. And the driving of the two baffle plates is still controlled by the clutch control assembly, so that a worker only needs to continuously strike the hit plate, and no additional operation is needed.
4. In this marine survey deposit sampler, because receive portion, separation and reunion control unit and shutoff mechanism all are located the sampling tube outside, consequently receive portion, separation and reunion control unit and shutoff mechanism can carry out detachable connection with the sampling tube for the sampling tube can be lifted off the sampling tube after the sample is accomplished, then from install a new sampling tube down can, so that deposit the sampling tube, still saved the cost of sampler simultaneously.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the striking part according to the present invention;
FIG. 3 is a schematic diagram of a clutch control assembly according to the present invention;
FIG. 4 is a schematic structural view of a plugging mechanism according to the present invention;
FIG. 5 is a schematic diagram of a plugging mechanism according to a second embodiment of the present invention;
FIG. 6 is a schematic view of a baffle plate according to the present invention;
FIG. 7 is a second schematic view of a baffle plate according to the present invention;
FIG. 8 is a schematic view showing the assembly and disassembly of a sampling tube according to the present invention;
FIG. 9 is a schematic diagram III of a plugging mechanism according to the present invention;
FIG. 10 is a schematic view of a first baffle according to the present invention;
FIG. 11 is a schematic view showing a first state of a first shutter and a second shutter according to the present invention;
Fig. 12 is a second schematic view showing the states of the first and second barrier pieces of the present invention.
The meaning of each reference sign in the figure is:
100. Sampling tube, 101, grip, 102, mounting ring, 103, groove, 104, clamping ring, 110, hit receiving part, 111, top plate, 112, slide bar, 113, hit receiving plate, 114, bolt, 115, return spring, 116, support bar, 120, clutch control assembly, 121, sleeve, 122, straight bar, 123, threaded knob, 124, energy storage spring, 125, blocking plate, 126, round tube, 130, blocking mechanism, 131, baffle, 132, pressure receiving block, 133, rotating shaft, 134, compression ring, 140, driven bar, 150, first baffle, 151, second baffle, 152, fixed shaft, 153, wedge block, 154, collar.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the related art, chinese patent publication No. CN212300929U discloses a sludge and soil sampling apparatus. This patent rotates in the thief hatch department and has set up a plurality of baffles 131, can constitute the toper structure between a plurality of baffles 131, realizes opening and closing the thief hatch through the opening and shutting of baffle 131. However, the closing reset of the shutter 131 in this patent is performed by a spring. However, the spring provides limited restoring force to the baffle 131, which results in the patent being able to close the sampling port only in soft silt, and difficult to close the sampling port in non-silt soil, resulting in a more limited sampling device.
The invention provides a sediment sampler for marine investigation, as shown in fig. 1, the sampler comprises a sampling tube 100, the whole sampling tube 100 is in a vertical state, the bottom end of the sampling tube is a sampling port, the top end of the sampling tube can be closed or communicated, the invention is not limited herein, and two sides of the top end are provided with handles 101, so that a worker can conveniently pull up the sampling tube 100 upwards through the handles 101. The bottom end (i.e. the bottom of the sampling port) of the sampling tube 100 is rotatably provided with a blocking mechanism 130, the top end is provided with a hit portion 110, and the blocking mechanism 130 blocks the sampling port in a rotating manner. As shown in fig. 2, the impact portion 110 includes a top plate 111 fixed on the top end of the sampling tube 100, and a sliding rod 112 located above the top plate 111, wherein a transmission member is disposed between the sliding rod 112 and the plugging mechanism 130, and a sliding connection state and a non-sliding connection state are provided between the sliding rod 112 and the top plate 111, and in a normal state, the sliding rod 112 and the top plate 111 are in the non-sliding connection state, so that a striking force applied to the sliding rod 112 by an external tool (such as a rubber hammer) acts on the sampling tube 100 through the top plate 111, and power for downward moving the sampling tube 100 in soil is provided.
The sampler further comprises a clutch control assembly 120, wherein a part of the clutch control assembly 120 is positioned outside the sampling tube 100 and is used for switching the non-sliding connection state between the hit plate 113 and the top plate 111 to the sliding connection state through the reaction force of the ground when the sampling tube 100 moves down to a preset depth, so that the knocking force applied by an external tool to the sliding rod 112 is transmitted to the plugging mechanism 130 through a transmission piece, and the plugging mechanism 130 is forced to be closed to plug the sampling port.
As shown in fig. 2, a through hole for sliding the sliding rod 112 is formed in the center of the top plate 111, and a recess is formed at a portion of the sliding rod 112 penetrating into the through hole, so that a partial section of the sliding rod 112 is in an i-shaped structure. One end of the top plate 111 is communicated with the through hole, the other end of the top plate 111 penetrates through a sliding cavity of the outer ring of the top plate 111, a bolt 114 is arranged in the sliding cavity in a sliding mode, a reset spring 115 which is used for elastically connecting the top of the bolt 114 and the outer ring of the top plate 111 is arranged between the top of the bolt 114 and the outer ring of the top plate 111, the bolt 114 is always inserted into a concave of the sliding rod 112 through the elasticity of the reset spring 115, and the sliding rod 112 and the top plate 111 are forced to be in a non-sliding connection state so as to prevent the sliding rod 112 from moving downwards.
And the length of the latch 114 is greater than the length of the sliding chamber. That is, one end of the latch 114 protrudes from the outer circumference of the top plate 111 when inserted into the recess of the slide bar 112. Meanwhile, the bottom of the protruding part of the bolt 114 is provided with the chute, and the chute is in a state of being close to the middle part of the bolt 114 and the end part of the bolt 114 is low, so that the plugging mechanism 130 drives the bolt 114 to the outside of the top plate 111 through the chute, and the bolt 114 is separated from the concave part of the slide rod 112.
In the above, the bottom of the top plate 111 is fixed to the outer ring of the sampling tube 100 through the support rod 116, so as to achieve the fixed connection between the top plate 111 and the striking part 110.
Meanwhile, in order to improve the probability of the rubber hammer hitting the slide bar 112 and avoid the contact between the rubber hammer and the top plate 111, the top of the slide bar 112 is enlarged, specifically, a hit plate 113 is arranged at the top of the slide bar 112, and the diameter of the hit plate 113 is not smaller than the diameter of the top plate 111, so that the contact phenomenon between the rubber hammer and the top plate 111 is prevented.
As shown in fig. 3, the clutch control assembly 120 includes a longitudinally disposed telescopic rod longitudinally slidably disposed on the outer periphery of the sampling tube 100, and the top end of the telescopic rod is disposed at the bottom of the chute. Specific:
In some embodiments, the telescopic rod comprises a sleeve 121 and a straight rod 122 which are in sliding connection with each other, and a threaded knob 123 is arranged on the outer ring of the sleeve 121, and the straight rod 122 is locked through the threaded knob 123, so that the sliding connection between the straight rod 122 and the sleeve 121 is changed into a fixed connection. Meanwhile, the top end of the straight rod 122 extends to the bottom of the chute, the bottom end of the sleeve 121 is connected with a blocking plate 125, and the blocking plate 125 is longitudinally sleeved on the outer ring of the sampling tube 100 in a sliding manner. Thus, when the blocking plate 125 contacts with the ground, if the sampling tube 100 continues to move downward, the blocking plate 125 will be pushed upward by the ground, so as to drive the sleeve 121 and the straight rod 122 to move upward, and the straight rod 122 moves upward to drive the latch 114 to disengage from the recess of the slide rod 112 through the chute, so that the slide rod 112 and the top plate 111 are in sliding connection.
The straight rod 122 preferably slides longitudinally through the grip 101, so that the straight rod 122 can be limited by the grip 101, and the slide rod 112 can only move up and down.
In order to improve the efficiency of driving the latch 114, the present invention provides an energy storage spring 124 between the bottom of the sleeve 121 and the top of the blocking plate 125, the elastic force of the energy storage spring 124 is greater than that of the return spring 115, and the sleeve 121 is longitudinally slidably connected with the blocking plate 125. Specifically, a circular tube 126 is longitudinally arranged at the top of the blocking plate 125, the circular tube 126 is slidably connected with the sleeve 121, and then the energy storage spring 124 is arranged in the circular tube 126. Thus, if the sleeve 121 and the straight rod 122 just hit the sliding rod 112 during the chute pushing process, the friction between the sliding rod 112 and the latch 114 increases, so that the straight rod 122 cannot push the chute. After the energy storage spring 124 is arranged, when the straight rod 122 cannot prop up the chute, the energy storage spring 124 compresses, so that the power for moving the blocking plate 125 upwards is stored, when the rubber hammer is separated from the sliding rod 112, the energy storage spring 124 rebounds to drive the straight rod 122 to move upwards, and at the moment, the straight rod 122 props up the chute.
And, the bottom of sampling tube 100 is provided with collar 102, and collar 102 is made for metal material, can avoid the damage of sampling tube 100 bottom in the sampling process.
As shown in fig. 5, the driving member is a driven rod 140 with its top end fixedly connected to the bottom of the striking plate 113 and its bottom end extending to the bottom of the sampling tube 100.
As shown in fig. 4 and 5, in some embodiments, the plugging mechanism 130 includes a plurality of baffles 131, each baffle 131 has a triangular structure with a wide upper portion and a narrow lower portion, the plurality of baffles 131 are arranged around a central annular array at the bottom end of the sampling tube 100, the top of the baffle 131 is rotatably connected with the bottom end of the mounting ring 102 (specifically, a rotating shaft 133 is arranged at the bottom of the mounting ring 102, and the rotating shaft 133 is rotatably connected with the top of the baffle 131), and the top end of the baffle 131 is provided with a compression block 132 with one end extending towards the outer ring of the mounting ring 102. The plurality of baffles 131 form a tapered structure after being folded. The outer ring of the mounting ring 102 is longitudinally provided with a pressing ring 134 in a sliding manner, the top of the pressing ring 134 is fixedly connected with the bottom end of the driven rod 140, and when the pressing ring 134 moves downwards, the pressing ring 134 applies a rotating acting force to the center of the sampling tube 100 to the baffle 131 through the pressed block 132.
In order to prevent the pressing ring 134 from protruding out of the outer ring of the mounting ring 102 and affecting the downward movement efficiency of the sampling tube 100, the thickness of the outer ring at the bottom of the mounting ring 102 is reduced, so that the thickness of the outer ring at the bottom of the mounting ring 102 is smaller than that of the outer ring at the top, a groove 103 is formed, and at the moment, the pressing ring 134 is slidably sleeved on the outer ring of the groove 103, so that the pressing ring 134 can be prevented from protruding out of the outer ring of the mounting ring 102.
Furthermore, there is a friction force between the pressing ring 134 and the groove 103 that is greater than the thrust force exerted by the soil within the sampling tube 100 on the baffle 131. The friction force can avoid the phenomenon that the baffle 131 is reset to be opened when the pressing ring 134 drives the baffle 131 to be closed through the pressed block 132.
In use, the sampler of the present invention is first adjusted to the length between the sleeve 121 and the straight rod 122 so that the position of the blocking plate 125 is consistent with the depth of the downshifting of the sampling tube 100. For example, the entire length of the sampling tube 100 is 2 meters, and the sampling tube 100 needs to be moved down by 1.5 meters for sampling, that is, the sampling tube 100 does not need to be moved down when it is moved down to 1.5 meters. At this time, the blocking plate 125 is adjusted to a position corresponding to 1.5 meters of the sampling tube 100, and then the sleeve 121 and the straight bar 122 are locked by the screw knob 123 such that the top end of the straight bar 122 is positioned at the chute.
Then, the sampling tube 100 is perpendicular to the ground, then the baffles 131 are rotated and opened, the pressed blocks 132 are positioned at the bottom end of the mounting ring 102, the mounting ring 102 limits the pressed blocks 132 to prevent the baffles 131 from overturning towards the outer ring of the mounting ring 102, then the hit plate 113 is hit by a rubber hammer, the acting force received by the hit plate 113 is transmitted to the sampling tube 100 through the bolts 114 and the top plate 111, so that the sampling tube 100 is subjected to the hit force to move downwards, and the downward moving state is shown in fig. 6.
Then, when the coupon 100 is moved down to 1.5 meters, the bottom of the baffle 125 is now in contact with the ground, as shown in particular in FIG. 7. When the worker knocks the hit plate 113 again, the sampling tube 100 moves down to force the ground to push the blocking plate 125, the blocking plate 125 moves up to drive the sleeve 121 and the straight rod 122 to move up, and the straight rod 122 moves up to drive the latch 114 to move away from the slide rod 112 through the chute. Then, the knocking plate 113 is continuously knocked, at this time, the knocking plate 113 is forced to move downwards to drive the driven rod 140 to move downwards, the driven rod 140 moves downwards to drive the pressing ring 134 to move downwards, the pressing ring 134 moves downwards to drive the baffle plates 131 to rotate towards the center of the sampling tube 100 through the pressed blocks 132, and the sampling ports at the bottom of the sampling tube 100 are plugged by the rotation and closure of the baffle plates 131.
Here, the pressing ring 134 moves down until the inner ring thereof contacts the end of the pressure receiving block 132, so that the shutter 131 cannot be reset, and the shutter 131 can be reset and opened only after the pressing ring 134 is moved up.
Finally, the sampling tube 100 is pulled out by the grip 101.
It should be noted that the sliding between the baffle 125 and the sampling tube 100 has a friction force that is greater than the gravity of the baffle 125 and the sleeve 121 and the straight rod 122, i.e., the baffle 125 does not automatically slide down.
That is, the clutch control unit 120 senses the downward movement depth of the sampling tube 100, so that after the sampling tube 100 is moved downward to a predetermined depth, the clutch control unit 120 changes the non-sliding connection state between the striking plate 113 and the top plate 111 to the sliding connection state by using the reaction force of the ground, so that the force of the worker striking the striking plate 113 next time is transmitted to the blocking mechanism 130, and the blocking mechanism 130 blocks the sampling port by the striking force. In this way, the worker only needs to strike the strike plate 113, and the operation mode does not need to be changed after striking, so that the operation times of the worker are reduced, and the folding efficiency of the plugging mechanism 130 when facing the soil is reduced.
In some environments, the sludge is relatively loose, so that the sampling tube 100 can be greatly moved down when being knocked by a single time, and the actual downward movement depth of the sampling tube 100 is far greater than the preset downward movement depth. The sampler of the present invention provides resistance to the sampling tube 100 when a predetermined downshifting depth is reached when facing soft sludge. The method comprises the following steps:
Because the position of the blocking plate 125 corresponds to the downward movement depth of the sampling tube 100, when the straight rod 122 drives the bolt 114 through the chute, the blocking plate 125 cannot move upwards continuously, and at this time, when the sampling tube 100 moves downwards continuously, the blocking plate 125 is positioned on the ground, so that resistance is provided for the sampling tube 100 which moves downwards continuously, the phenomenon that the sampling tube 100 moves downwards continuously to a large extent after reaching the downward movement depth is avoided, and the soil is prevented from being oversampled.
In other embodiments, as shown in fig. 9-12, the plugging mechanism 130 includes a first blocking piece 150 and a second blocking piece 151 located at the bottom of the mounting ring 102, one ends of the first blocking piece 150 and the second blocking piece 151 are rotatably disposed in a fixed shaft 152 disposed at the bottom of the mounting ring 102, the first blocking piece 150 and the second blocking piece 151 are in a C-shaped structure, the first blocking piece 150 and the second blocking piece 151 are symmetrically disposed, the driven rod 140 is symmetrically disposed at two sides of the fixed shaft 152, a wedge block 153 is fixedly disposed at the bottom end of the driven rod 140, and the inclined surface of the wedge block 153 faces the first blocking piece 150 and the second blocking piece 151. Under normal state, the first baffle 150 and the second baffle 151 are located between the outer ring and the inner ring at the bottom end of the mounting ring 102, and when the driven rod 140 moves down, the driven rod 140 drives the first baffle 150 and the second baffle 151 to rotate towards the center of the sampling port through the wedge block 153, so as to plug the sampling port.
When the device works, when the driven rod 140 is driven to move downwards by the driven plate 113, the driven rod 140 moves downwards to drive the wedge block 153 to move downwards by the driven rod 140, the wedge block 153 moves downwards to push the first baffle plate 150 and the second baffle plate 151, the first baffle plate 150 rotates towards the center of the sampling port, soil at the bottom of the sampling port is cut off in the rotating process, and then the soil above the sampling port is blocked by the rotating plate 113, so that the soil in the sampling pipe 100 is prevented from falling.
Thus, when the blocking mechanism 130 is arranged as two C-shaped blocking pieces when facing harder soil, the soil is cut off by utilizing the horizontal cutting of the two blocking pieces, and the soil above the sampling port is blocked, so that the soil in the sampling tube 100 is prevented from falling. And the driving of the two baffles is still controlled by the clutch control assembly 120, so that a worker only needs to continuously strike the strike plate 113 without performing additional operation.
In addition, a collar 154 is provided on the outer ring of the mounting ring 102, and the bottom end of the driven lever 140 is slid through the collar 154. Collar 154 serves to limit driven rod 140 and prevent driven rod 140 from bending.
Moreover, in the case of sampling a large area, it is generally necessary to sample at a different location in a region, and the sampled soil is temporarily stored in the sampling tube 100, thereby requiring the use of a large number of sampling tubes 100. For this reason, as shown in fig. 8, the handles 101 are symmetrically disposed on two sides of the sampling tube 100, the proximity ends of the two handles 101 are fixedly connected with clamping rings 104, the two clamping rings 104 are connected to the outer ring of the sampling tube 100 by bolts, the supporting rods 116 are fixedly disposed on the tops of the clamping rings 104, the top plate 111 is fixedly connected with the supporting rods 116 on the top of one of the clamping rings 104, the blocking plate 125 is made of flexible material and has a C-shaped ring structure, and the mounting ring 102 is detachably connected with the bottom of the sampling tube 100, such as bolting, plugging, etc.
Thus, when the sampling tube 100 finishes sampling, the connection of the two clamping rings 104 is firstly canceled through the bolts, at this time, the two clamping rings 104 can be removed, then the mounting ring 102 is separated from the bottom of the sampling tube 100, and finally the blocking plate 125 is removed from the outer ring of the sampling tube 100.
Therefore, since the hit portion 110, the clutch control assembly 120 and the blocking mechanism 130 are all located outside the sampling tube 100, the hit portion 110, the clutch control assembly 120 and the blocking mechanism 130 can be detachably connected with the sampling tube 100, so that the sampling tube 100 can be detached after the sampling is completed, and then a new sampling tube 100 is installed from below, thereby facilitating storage of the sampling tube 100, and saving the cost of the sampler.
It should be appreciated that while the follower rod 140 is external to the sampling tube 100, the soil may limit the follower rod 140 as it moves down into the soil, avoiding bending of the follower rod 140 during actuation of the capping mechanism 130. The driven bar 140 may also be fabricated using a high strength material.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed.
Claims (9)
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| CN116929833A (en) * | 2023-07-27 | 2023-10-24 | 广东海洋大学 | Marine geological environment exploration sampling equipment and sampling method |
| CN119334687A (en) * | 2024-11-16 | 2025-01-21 | 内蒙古财经大学 | A soil sampling and detection device for desertification control |
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| US3955631A (en) * | 1973-08-29 | 1976-05-11 | Alexandr Dmitrievich Kostylev | Soil sampler |
| JP4600845B2 (en) * | 2001-03-06 | 2010-12-22 | 鉱研工業株式会社 | Soil sampler |
| CN108020438B (en) * | 2018-01-31 | 2024-09-27 | 上海交大海洋水下工程科学研究院有限公司 | Mechanical hand-held type seabed sediment airtight sampling device and sampling and pressure maintaining method thereof |
| CN111595611B (en) * | 2020-05-13 | 2021-11-16 | 中国科学院海洋研究所 | ROV-based deep sea sediment acoustic parameter in-situ detection system and method |
| CN115235824B (en) * | 2022-08-01 | 2025-02-14 | 南阳山河水利技术咨询服务有限公司 | A multifunctional river water sediment content sampling device |
| CN222013579U (en) * | 2024-01-31 | 2024-11-15 | 新疆林科院造林治沙研究所 | Flood overflow area soil sample collection device |
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| CN116929833A (en) * | 2023-07-27 | 2023-10-24 | 广东海洋大学 | Marine geological environment exploration sampling equipment and sampling method |
| CN119334687A (en) * | 2024-11-16 | 2025-01-21 | 内蒙古财经大学 | A soil sampling and detection device for desertification control |
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