Soil sampling rod

Abstract

The utility model discloses a soil sampling rod which comprises a drill cylinder assembly, the drill cylinder assembly comprises a cylinder body and a drill bit, the cylinder body is provided with a sampling pipe containing cavity extending in the axial direction of the cylinder body, a first containing space is formed between the inner wall of the cylinder body and the outer wall of the cylinder body, and a second containing space is formed in the drill bit; the first accommodating space is communicated with the second accommodating space; the baffle assembly is arranged in the second containing space and composed of a plurality of baffle parts capable of being opened and closed. The transmission assembly comprises a sliding block and a transmission part, the transmission part is arranged in the first containing space, and the transmission part is connected with the baffle part, so that in the moving process of the sliding block, the transmission part drives the baffle part to be opened or closed, and the sampling pipe containing cavity is opened or closed. Compared with the prior art, sandy soil is effectively prevented from entering the drill bit to block the drill bit when the drill rod descends.

Description

Technical Field

[0001] This utility model belongs to the field of soil sampling technology, specifically relating to a soil sampling rod. Background Technology

[0002] Soil sampling refers to the methods of collecting soil samples. The distribution of pollutants in the soil varies both horizontally due to their distance from the pollution source and vertically due to differences in time and other factors. Therefore, soil samples must be collected in layers according to the soil profile.

[0003] Because it is necessary to sample different soil layers, the sampling drill rod usually needs to be used in conjunction with a hydraulic drilling rig and a soil sampling tube. When collecting deep soil, if the sample rod encounters highly mobile soils such as sand or soft soil, it is easy for the sand or soft soil to back up and fill the sample rod, causing blockage and affecting the normal downward sampling work.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a soil sampling device that prevents soil backflow from clogging the drill rod.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a soil sampling rod that can prevent soil backflow from clogging the sampling drill bit and affecting normal downward sampling during the soil sampling process.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] In a first aspect, this utility model provides a soil sampling rod, which includes:

[0009] A drill barrel assembly, comprising a barrel body and a drill bit, wherein the barrel body has a sampling tube receiving cavity extending along its axial direction, a first receiving space is provided between the inner wall of the barrel body and the outer wall of the barrel body, and a second receiving space is formed inside the drill bit, wherein the first receiving space and the second receiving space are connected.

[0010] A baffle assembly, disposed within the second receiving space, is composed of a plurality of openable and closable baffle portions;

[0011] The transmission assembly includes a slider and a transmission component. The transmission component is disposed in the first receiving space and is connected to the baffle portion so that when the slider moves, the transmission component drives the baffle portion to open or close, thereby opening or closing the sampling tube receiving cavity.

[0012] In one or more embodiments of this utility model, a first slide rail is provided in the first receiving space;

[0013] The transmission component includes a first transmission part and a second transmission part. The first end of the first transmission part is hinged to the baffle part, and the first end of the second transmission part is hinged to the slider.

[0014] The second end of the first transmission part is hinged to the second end of the second transmission part, and the hinged part between the second end of the first transmission part and the second end of the second transmission part can slide along the first slide rail.

[0015] In one or more embodiments of this utility model, a second slide rail is provided in the first receiving space, the arrangement direction of the second slide rail is perpendicular to the axial direction of the cylinder, and the slider can slide along the second slide rail.

[0016] In one or more embodiments of this utility model, a spring is provided between the slider and the outer wall of the cylinder, for causing the slider to at least partially protrude into the sampling tube receiving cavity in a non-sampling state.

[0017] In one or more embodiments of this utility model, the top of the slider is provided with a guide surface for guiding the sampling tube, and the guide surface is inclined toward the bottom of the slider.

[0018] In one or more embodiments of this utility model, the baffle assembly is hinged to a connecting ring.

[0019] In one or more embodiments of this utility model, in the non-sampling state, the outer wall of the baffle assembly abuts against the inner wall of the drill bit.

[0020] In one or more embodiments of this utility model, a through hole for sampling is provided in the projection area of ​​the sampling tube receiving cavity along the axial direction of the cylinder on the drill bit.

[0021] In one or more embodiments of this utility model, the first receiving space is provided with a mounting surface for fixing the first slide rail, and the mounting surface and the first slide rail are both located on the side of the second slide rail facing away from the baffle assembly.

[0022] In one or more embodiments of this utility model, a connecting part is provided on the top of the cylinder, and the connecting part is provided with threads.

[0023] Compared with existing technologies, this invention achieves switching between two modes of the soil sampling rod by setting a detachable baffle at the bottom of the drill rod and cooperating with a transmission mechanism. In non-sampling mode, the baffles fit tightly together, and the outer wall of the baffle assembly abuts against the drill bit, making the drill bit sampling port almost closed, effectively preventing sand and soil from entering the drill bit and clogging it when the drill rod descends. In sampling mode, the baffles unfold along the connected first and second receiving spaces, and the sampling tube can sample the soil based on the preset sampling port of the drill bit to accurately obtain soil at the desired depth. Furthermore, the switching between the two states of the soil sampling rod provided by this invention is based on whether the sampling tube is inserted. The baffle assembly only unfolds when the sampling tube is inserted, pressing the slider of the sampling tube receiving cavity, reducing the possibility of the baffles opening due to accidental operation during sampling. Moreover, this invention has a simple structure, is easy to set up, and greatly saves sampling costs and improves sampling efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the non-sampling state of the soil sampling rod in one embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the sampling state of the soil sampling rod in one embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the non-sampling state of the soil sampling rod in another embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the sampling state of the soil sampling rod in another embodiment of the present invention;

[0029] Explanation of key figure labels:

[0030] 1-Drill barrel assembly, 11-Connecting part, 111-Thread, 12-Cylinder body, 121-Inner wall of cylinder, 122-Outer wall of cylinder, 13-Drill bit, 14-Sampling tube receiving cavity, 15-First receiving space, 16-Second receiving space, 17-Through hole, 2-Baffle assembly, 22-Connecting ring, 3-Transmission assembly, 31-Slider, 311-Guide surface, 321-First transmission part, 322-Second transmission part, 323-First slide rail, 324-Hinge part, 33-Second slide rail, 331-Spring, 34-Mounting surface, 4-Rotating shaft. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are merely examples of this utility model, and all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0032] like Figure 1-2 As shown, a soil sampling rod according to an embodiment of the present invention includes a drill cylinder assembly 1, a baffle assembly 2, and a transmission assembly 3. The drill cylinder assembly 1 includes a cylinder 12 and a drill bit 13. A first receiving space 15 is provided between the inner wall 121 and the outer wall 122 of the cylinder. A second receiving space 16 is formed inside the drill bit 13. The first receiving space 15 and the second receiving space 16 are connected.

[0033] Understandably, in actual soil sampling tasks, the drill cylinder assembly 1 is used in conjunction with a hydraulic drilling rig to enable the soil sampling rod to reach the desired sampling depth. In one embodiment, the drill bit 13 and the cylinder 12 can be integrally formed. The integrally formed drill cylinder assembly 1 can withstand greater environmental stress during use and has stronger reliability. However, since the transmission assembly 3 needs to be installed in the first receiving space 15 formed by the inner wall 121 and the outer wall 122 of the cylinder, the integrally formed drill cylinder assembly 1 may increase the difficulty and cost of installing internal components. Therefore, in another embodiment of this utility model, the drill bit 13 and the cylinder 12 can be injection molded separately and then connected by welding or other methods.

[0034] It is understandable that, when the magnitude of the force is constant, the pressure is negatively correlated with the area of ​​force application. In order to increase the pressure on the soil layer when the soil sampling rod breaks through the soil, the drill bit 13 usually adopts a structure that is wider at the top and narrower at the bottom, preferably in the shape of a cone or approximately a cone.

[0035] It should be noted that, in order to sample soil layers at a specified depth, the cylinder 12 is axially provided with a sampling tube receiving cavity 14 for placing the sampling tube; on the drill bit 13, a through hole 17 for sampling is provided in the projection area of ​​the sampling tube receiving cavity 14 along the first direction. In order to save casting material and reserve space for soil sampling in the sampling tube, the drill bit 13 is provided with a channel connecting the sampling tube receiving cavity 14 and the through hole 17. Based on this channel, the sampling tube can pass through the sampling tube receiving cavity 14 and the through hole 17, contact the soil and take samples.

[0036] In practical use, as the sampling rod moves through the soil layer, soil can enter the sampling channel via the drill bit 13, preventing the sampling tube from extending beyond the desired depth. Considering that the soil causing blockages is mostly sandy or soft soil, and the drill bit 13 has redundant strength, this invention expands the channel connecting the sampling tube receiving cavity 14 and the through hole 17 into a second receiving space 16, and installs a baffle assembly 2 within the second receiving space 16 to prevent backflow of sediment and blockage of the sampling channel when not sampling. This solves the technical problem and does not affect soil sampling during practical use.

[0037] Furthermore, to ensure that the baffle assembly 2 can seal the through hole 17 in the non-sampling state, in a specific embodiment of this utility model, the outer wall of the baffle assembly 2 abuts against the inner wall of the drill bit 13 in the non-sampling state. It is understood that due to errors in workpiece processing, to prevent poor contact between the baffle assembly 2 and the drill bit 13, which could lead to soil entering the second receiving space 16, and to prevent vibration between the abutting metal parts during the application of the soil sampling rod provided by this utility model, which could accelerate component aging and damage the properties of the desired sampled soil, in another embodiment, a sealing ring can be provided on the inner wall of the drill bit 13, with the baffle assembly 2 abutting against the sealing ring in the non-sampling state. This improves the sealing performance of the second receiving space 16, reduces the difficulty of workpiece processing, and makes the sampling rod easier to assemble and more adaptable.

[0038] On the other hand, in order to enable the baffle assembly 2 to unfold in the sampling state to form a channel through which the sampling tube can be protruded, in the embodiment of this utility model, the baffle assembly 2 is composed of multiple baffle parts. In the non-sampling state, each baffle part is tightly fitted together; in the sampling state, the baffle parts separate along the second receiving space 16 and the first receiving space 15.

[0039] It should be noted that in actual soil sampling, it may be desirable to obtain soil samples from multiple soil layers at different depths at the same location. That is, during a single sampling process, it may be necessary to continuously switch between sampling and non-sampling states as the depth of the sampling rod changes. Therefore, in order to ensure seamless adhesion of each baffle portion when switching to the non-sampling state during repeated switching of the soil sampling rod state, in one embodiment of this utility model, magnetic adhesive strips can be provided in the areas where each baffle portion adheres to other baffle portions. When the state switching causes the baffle portions to move, magnetic force assists in the adhesion of each baffle portion, forming a sealed baffle assembly 2.

[0040] It should also be noted that the soil sampling rod provided by this utility model also includes a transmission assembly 3. The transmission assembly 3 includes a slider 31 and a transmission component. The transmission component is disposed in the first receiving space 15 and is connected to the baffle part so that when the slider 31 moves, the transmission component drives the baffle part to move relative to the first direction in the opposite direction.

[0041] It is understandable that, in order to achieve the effect of sealing the through hole 17 of the drill bit 13, the baffle assembly 2 is preferably made to resemble the shape of the drill bit 13. As mentioned above, the drill bit 13 usually adopts a structure that is wider at the top and narrower at the bottom, preferably a cone or approximately a cone. Therefore, the baffle assembly 2 in the combined state should also have a structure that is wider at the top and narrower at the bottom, preferably a cone or approximately a cone. Furthermore, since the first receiving space 15 is composed of the inner wall 121 and the outer wall 122 of the cylinder, the baffle parts cannot be separated by linear movement in the opposite direction of the first direction. Furthermore, in order to enable each baffle part to separate along the second receiving space 16 and the first receiving space 15 when the soil sampling rod is in the sampling state, the transmission member used to lift the baffle part should be hinged to the corresponding baffle part. At the same time, the number of transmission members provided in the first receiving space 15 should be no less than the number of baffle parts constituting the baffle assembly 2. In one embodiment of this utility model, a connecting ring 22 can be provided, and a hinge point is provided on the connecting ring 22 to facilitate the opening and closing of the baffle parts.

[0042] Specifically, in one embodiment, the transmission component includes a first transmission part 321 and a second transmission part 322. The first end of the first transmission part 321 is hinged to the baffle part, the first end of the second transmission part 322 is hinged to the slider 31, and the second end of the first transmission part 321 is hinged to the second end of the second transmission part 322. The hinge point between the second ends of the first transmission part 321 and the second ends of the second transmission part 322 can slide along the first slide rail 323. A second slide rail 33 is provided in the first receiving space 15. The arrangement direction of the second slide rail 33 is perpendicular to the axial direction of the cylinder 12, and the slider 31 can slide along the second slide rail 33.

[0043] It is understood that the first receiving space 15 is provided with a mounting surface 34 for fixing the first slide rail 323, and both the mounting surface 34 and the first slide rail 323 are located on the side of the second slide rail 33 facing away from the baffle assembly 2. Optionally, the mounting surface 34 may be provided in the first receiving space 15 and fixed to the outer wall 122 and / or the inner wall 121 of the cylinder, and this embodiment of the present invention does not limit this.

[0044] When the sampling tube is inserted into the sampling tube receiving cavity 14, the sampling tube presses the slider 31 along the guide surface 311. The slider 31 is subjected to force and moves along the second slide rail 33, which drives the hinge part 324 at the second end of the second transmission part 322 to move along the first slide rail 323 to the side away from the baffle assembly 2. This causes the first transmission part 321, which is hinged to the same point, to pull the baffle part, thereby realizing the opening and closing of the baffle assembly 2.

[0045] Reference Figure 3-4 This is a schematic diagram of another embodiment of the present invention. In this embodiment, the second slide rail 33 is omitted, and the movement of the slider 31 is changed to rotation around an axis. When the sampling tube is inserted into the sampling tube receiving cavity 14, the sampling tube presses the slider 31 along the guide surface 311. The slider 31 is subjected to force and moves around the preset rotating shaft 4, which drives the hinge part 324 at the second end of the second transmission part 322 to move along the first slide rail 323 to the side away from the baffle assembly 2. This causes the first transmission part 321, which is hinged to the same point, to pull the baffle part, thereby realizing the opening and closing of the baffle assembly 2.

[0046] It should be noted that the second transmission part 322 needs to be made of rigid material so that during the process of the slider 31 being squeezed and moving by the sampling tube, the second end of the second transmission part 322 moves along the first slide rail 323 to the side away from the baffle assembly 2; in contrast, since the first transmission part 321 is only used to pull the baffle part connected to it, the present invention does not limit the material of the first transmission part 321.

[0047] It should also be noted that, in order to facilitate the insertion of the sampling tube into the sampling tube receiving cavity 14 and to apply a force perpendicular to the first direction to the slider 31, in one embodiment of this utility model, a guide surface 311 is provided at the top of the slider 31, and the guide surface 311 is inclined toward the bottom of the slider 31. A spring 331 is provided between the slider 31 and the outer wall 122 of the cylinder, for using to keep the slider 31 at least partially placed in the sampling tube receiving cavity 14 in the non-sampling state. Here, the top refers to the side of the slider 31 away from the baffle portion, and the bottom refers to the side of the slider 31 close to the baffle portion.

[0048] Since the soil sampling rod provided by this utility model needs to be capable of sampling soil samples at a certain depth, the length of its cylinder 12 needs to meet the desired depth requirements. An excessively long cylinder 12 would be difficult to mold as a single piece and would not flexibly meet the detection needs of other different depths. Therefore, the soil sampling rod provided by this utility model has a connecting part 11 protruding from the top of the cylinder 12. The connecting part 11 can be connected to other cylinders 12 to extend the detectable depth of the soil sampling rod. The connection method between the connecting part 11 and other cylinders 12 can include, but is not limited to, snap-fit ​​and plug-in connections. Preferably, a thread 111 can be provided on the connecting part 11 for screwing with other matching cylinders 12.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soil sampling rod, characterized by, The application relates to a drill barrel assembly. The drill barrel assembly comprises a barrel body and a drill head, the barrel body has a sampling tube receiving cavity extending along the axial direction of the barrel body, a first receiving space is arranged between the inner wall of the barrel body and the outer wall of the barrel body, a second receiving space is formed in the drill head, and the first receiving space and the second receiving space are connected. A baffle assembly is arranged in the second receiving space and comprises a plurality of openable and closable baffle parts. A transmission assembly comprises a sliding block and a transmission part, the transmission part is arranged in the first receiving space, the transmission part is connected with the baffle parts, and during the movement of the sliding block, the transmission part drives the baffle parts to open and close, so as to open or close the sampling tube receiving cavity.

2. The soil sampling rod of claim 1, wherein, A first sliding rail is arranged in the first receiving space. The transmission part comprises a first transmission part and a second transmission part, the first end of the first transmission part is hingedly connected with the baffle parts, the first end of the second transmission part is hingedly connected with the sliding block, the second end of the first transmission part is hingedly connected with the second end of the second transmission part, and the hinge part of the second end of the first transmission part and the second end of the second transmission part can slide along the first sliding rail.

3. The soil sampling probe of claim 1, wherein, A second sliding rail is arranged in the first receiving space, the arrangement direction of the second sliding rail is perpendicular to the axial direction of the barrel body, and the sliding block can slide along the second sliding rail.

4. The soil sampling probe of claim 1, wherein, A spring is arranged between the sliding block and the outer wall of the barrel body, and is used for protruding the sliding block into the sampling tube receiving cavity at least partially in a non-sampling state.

5. The soil sampling probe of claim 1, wherein, A guide surface for guiding the sampling tube is arranged on the top of the sliding block, and the guide surface is arranged to be inclined towards the bottom of the sliding block.

6. The soil sampling probe of claim 1, wherein, The baffle assembly is hingedly connected with a connecting ring.

7. The soil sampling probe of claim 1, wherein, In a non-sampling state, the outer wall of the baffle assembly abuts against the inner wall of the drill head.

8. The soil sampling probe of claim 1, wherein, On the drill head, a through hole for sampling is arranged in the projection area of the sampling tube receiving cavity along the axial direction of the barrel body.

9. The soil sampling probe of claim 1, wherein, The first receiving space is provided with a mounting surface for fixing the first sliding rail, and the mounting surface and the first sliding rail are located on the side of the second sliding rail away from the baffle assembly.

10. The soil sampling probe of claim 1, wherein, A connecting part is protruded on the top of the barrel body, and a screw thread is arranged on the connecting part.

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