Sampling device for highway engineering

Abstract

The utility model provides a sampling device for highway engineering, and relates to the technical field of soil sampling. The sampling device for highway engineering comprises a support, a sampler is erected on the support, the sampler comprises a drilling barrel and a sampling head, the top end of the drilling barrel is coaxially connected with a rotating shaft, a sample storage pipe is detachably embedded in the drilling barrel, the bottom end of the sample storage pipe is rotatably connected with a bottom rotating end in a limited mode, and the bottom rotating end is connected with the drilling barrel. A plurality of second through holes matched with the drilling barrel and the sample storage pipes are uniformly formed in the circumferential direction of the bottom rotating end, the sample storage pipes and the second through holes are opened and closed through rotation of the sample storage pipes relative to the bottom rotating end, and the sample storage pipes are separated from the second through holes through limiting rotation of the sample storage pipes relative to the bottom rotating end. The inner part of the sample storage pipe and the drilling cylinder are communicated or closed, so that a sample in the sample storage pipe cannot fall off when the sample storage pipe is replaced, and the sample storage pipe is convenient to replace by utilizing the detachable embedding between the sample storage pipe and the drilling cylinder.

Description

Technical Field

[0001] This application relates to the field of soil sampling technology, and more specifically, to a sampling device for highway engineering. Background Technology

[0002] In the prior art, for example, a soil sampling device for highway engineering supervision disclosed in CN221501938U includes a soil collection device body. The soil collection device body includes an overlapping support arm plate. A snap-fit ​​positioning unit is fixedly installed on the outer surface of the overlapping support arm plate. A quantitative sampling unit is movably sleeved on the inner wall of the snap-fit ​​positioning unit. The snap-fit ​​positioning unit includes a limiting arm plate fixedly connected to the upper and lower surfaces of the overlapping support arm plate.

[0003] In this solution, a sampling and storage sleeve is attached to the inner wall of the soil drilling tube. A polygonal locking sleeve on one end of the rotator is then attached to the top surface of the soil drilling tube. The rotator rotates the soil drilling tube, causing it to continuously rotate and press down inside the soil. The sampling and storage sleeve collects samples from specific soil layers. Simultaneously, an exhaust vent at the top of the sleeve releases internal air. The sampling and storage sleeve directly stores the samples, and continuous sample collection can be achieved simply by replacing the sleeve, reducing wasted time.

[0004] However, this method is only applicable to soil sampling with a certain level of moisture. Once the sampled soil or other sampling media is squeezed into the sampling collection sleeve and cannot form an adhesive, the sample inside the sampling collection sleeve will fall out when the sampling collection sleeve is taken out, resulting in sample damage and contamination. Utility Model Content

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a sampling device for highway engineering, which aims to improve the problem that samples in the sampling and receiving cylinder of an existing highway engineering sampling device are prone to falling out, resulting in sample damage and contamination.

[0006] This application discloses a sampling device for highway engineering, including a support frame, wherein a sampler is mounted on the support frame. The sampler includes a drilled cylinder and a sampling head coaxially fixed. A rotating shaft is coaxially connected to the top end of the drilled cylinder. A sample storage tube is detachably embedded inside the drilled cylinder. A bottom rotating end is rotatably connected to the bottom end of the sample storage tube. A plurality of second through holes corresponding to the drilled cylinder and the sample storage tube are evenly arranged circumferentially on the bottom rotating end. By rotating the sample storage tube relative to the bottom rotating end, an opening and closing mechanism is formed between the sample storage tube and the second through holes.

[0007] According to an embodiment of this application, a sampling device for highway engineering has the following advantages: by utilizing the limiting rotation of the sample storage tube relative to the bottom rotating end, a connection or closure is formed between the interior of the sample storage tube and the drilling tube, so that the sample inside the sample storage tube will not fall out when the sample storage tube is replaced. The detachable fitting between the sample storage tube and the drilling tube facilitates the replacement of the sample storage tube.

[0008] In addition, a sampling device for highway engineering according to an embodiment of this application also has the following additional technical features:

[0009] In some specific embodiments of this application, the drilling tube is provided with a cavity for embedding the sample storage tube, and a limiting ring and a base plate are coaxially fixed to the bottom end of the drilling tube. The limiting ring is located at the end of the base plate facing the sampling head. The base plate is circumferentially provided with a plurality of first through holes corresponding to a plurality of second through holes. A plurality of pins are circumferentially fixed to the end of the base plate away from the limiting ring.

[0010] In some specific embodiments of this application, the bottom end of the sample storage tube is a bottom fixed end, and the bottom fixed end is circumferentially provided with a plurality of third through holes that correspond one-to-one with the second through hole, and the bottom fixed end facing the bottom rotating end is circumferentially provided with a plurality of limiting pins.

[0011] In some specific embodiments of this application, the bottom rotating end is rotatably connected to the sample storage tube, and the bottom rotating end is evenly provided with a plurality of positioning holes that are inserted into and cooperate with the pins on the base plate, and the bottom rotating end is evenly provided with a plurality of arc-shaped holes that are slidably cooperate with the limiting pins.

[0012] In some specific embodiments of this application, the angle at which the limiting pin rotates within the arc-shaped hole is half the angle between two adjacent second through holes.

[0013] In some specific embodiments of this application, the top end of the sample storage tube is provided with a through hole, the top end of the sample storage tube is fitted with a top cover, the top cover is provided with a vent hole communicating with the through hole on the sample storage tube, and a plurality of connecting posts are uniformly arranged circumferentially on the upper end surface of the top cover.

[0014] In some specific embodiments of this application, an elastic component is connected to the top side of the top cover, the elastic component including a baffle fixed to the connecting post, and a spring fixed to the baffle.

[0015] In some specific embodiments of this application, the other end of the spring abuts against the inner top of the drill barrel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a sampling device for highway engineering according to an embodiment of this application;

[0018] Figure 2 This is a partial exploded view of a sampling device for highway engineering according to an embodiment of this application;

[0019] Figure 3 The structural explosion of the sample storage tube according to the embodiment of this application. Figure 1 ;

[0020] Figure 4 The structural explosion of the sample storage tube according to the embodiment of this application. Figure 2 .

[0021] Icons: 1. Bracket; 2. Sampler; 21. Drill tube; 211. Limiting ring; 212. Base plate; 213. First through hole; 22. Sampling head; 3. Rotating shaft; 4. Sample storage tube; 41. Bottom fixed end; 411. Third through hole; 412. Limiting pin; 42. Bottom rotating end; 421. Second through hole; 422. Positioning hole; 423. Arc-shaped hole; 43. Top cover; 431. Vent hole; 432. Connecting column; 44. Elastic component; 441. Baffle; 442. Spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] like Figures 1-4As shown in the figure, a sampling device for highway engineering according to an embodiment of this application includes a support frame 1, wherein a sampler 2 is mounted on the support frame 1. The sampler 2 includes a drilling cylinder 21 and a sampling head 22 coaxially fixed. The top end of the drilling cylinder 21 is coaxially connected to a rotating shaft 3. It should be noted that in the specific embodiment of this application, the sampler 2 is inserted into the support frame 1, and the support frame 1 is only used for auxiliary positioning. The figure is only for reference and its style is not limited. The rotating shaft 3 and the drilling cylinder 21 are detachably connected. It should also be noted that the rotating shaft 3 is externally connected to a driving device so that the rotating shaft 3 can drive the drilling cylinder 21 to rotate, so that the sampling head 22 can drill into the soil to achieve sampling. Furthermore, it should be noted that the sampling head 22 can be spiral in shape, so as to facilitate the upward axial transport of the soil during the drilling process.

[0024] Specifically, a sample storage tube 4 is detachably installed inside the drilling tube 21. The bottom end of the sample storage tube 4 is rotatably connected to a bottom rotating end 42. The bottom rotating end 42 is circumferentially provided with a plurality of second through holes 421 that correspond to the drilling tube 21 and the sample storage tube 4. By rotating the sample storage tube 4 relative to the bottom rotating end 42, the sample storage tube 4 and the second through holes 421 are opened and closed.

[0025] like Figure 2 As shown, the drilling tube 21 has a cavity for embedding the sample storage tube 4. The bottom end of the drilling tube 21 is coaxially fixed with a limiting ring 211 and a bottom plate 212. The limiting ring 211 is located at the end of the bottom plate 212 facing the sampling head 22. It should be noted that the design of the limiting ring 211 prevents the soil conveyed by the sampling head 22 from scattering, thus playing a certain limiting role in the conveyed soil.

[0026] Furthermore, the base plate 212 is circumferentially evenly provided with a plurality of first through holes 213 corresponding to a plurality of second through holes 421, and a plurality of pins (not shown in the figure) are circumferentially evenly fixed to the end of the base plate 212 away from the limiting ring 211.

[0027] Therefore, it can be seen that after the drilled soil is restricted from radial diffusion by the limiting ring 211, it will pass through the first through hole 213, forming an upward axial displacement.

[0028] like Figure 3 and Figure 4 As shown, the bottom end of the sample storage tube 4 is the bottom fixed end 41. The bottom fixed end 41 is circumferentially evenly provided with a plurality of third through holes 411 corresponding one-to-one with the second through hole 421. The bottom fixed end 41 facing the bottom rotating end 42 is circumferentially evenly provided with a plurality of limit pins 412.

[0029] It can be seen that the bottom fixed end 41, the bottom rotating end 42 and the base plate 212 are provided with a third through hole 411, a second through hole 421 and a first through hole 213 that correspond to each other.

[0030] The bottom rotating end 42 is rotatably connected to the sample storage tube 4 (it can only be rotatably connected). The bottom rotating end 42 is evenly provided with multiple positioning holes 422 on the circumferential direction, which are engaged with the pins on the bottom plate 212. Thus, the positioning of the sample storage tube 4 in the drilling tube 21 is achieved by inserting the positioning holes 422 into the pins.

[0031] Furthermore, the bottom rotating end 42 is circumferentially provided with a plurality of arc-shaped holes 423 that slide in cooperation with the limiting pin 412. The angle at which the limiting pin 412 rotates within the arc-shaped hole 423 is half the angle between two adjacent second through holes 421. Thus, the rotation between the bottom rotating end 42 and the sample storage cylinder 4 is restricted by the arc-shaped hole 423 and the limiting pin 412. It can be further understood that when the limiting pin 412 rotates to one end of the arc-shaped hole 423, if the third through hole 411, the second through hole 421 and the first through hole 213 are connected, then when the limiting pin 412 rotates to the other end of the arc-shaped hole 423, the third through hole 411, the second through hole 421 and the first through hole 213 will be closed.

[0032] It should be noted that, regardless of the state, the third through hole 411 and the first through hole 213 are always in a one-to-one coaxial correspondence.

[0033] Furthermore, the top end of the sample storage tube 4 is provided with a through hole, and a top cover 43 is embedded in the top end of the sample storage tube 4. The top cover 43 is provided with a vent hole 431 that communicates with the through hole on the sample storage tube 4. A plurality of connecting posts 432 are evenly arranged circumferentially on the upper end surface of the top cover 43. An elastic component 44 is connected to the top side of the top cover 43. The elastic component 44 includes a baffle 441 fixed to the connecting post 432, and a spring 442 is fixed to the baffle 441.

[0034] Therefore, it can be seen that the top of the sample storage tube 4 is connected to the outside, which can ensure that the sample can enter the sample storage tube 4 smoothly.

[0035] It should be noted that the other end of the spring 442 abuts against the inner top of the drill barrel 21.

[0036] Therefore, after the sample storage tube 4 is installed in the drilling cylinder 21, the positioning hole 422 is inserted into the pin on the upper end face of the base plate 212. At this time, the spring 442 and the top of the drilling cylinder 21 are in a state of compression. Due to the elasticity of the spring 442, the baffle 441 will transmit pressure downward, so that the sample storage tube 4 is firmly installed in the drilling cylinder 21. Rotating the sample storage tube 4 will make the third through hole 411, the second through hole 421 and the first through hole 213 connected. Then, the external drive device drives the rotating shaft 3 to rotate, which in turn makes the sampling head 22 rotate to take a sample. During the sampling process, the soil conveyed by the spiral passes through the first through hole. 213. The second through hole 421 and the third through hole 411 enter the sample storage tube 4. When the sample storage tube 4 needs to be replaced, the sample storage tube 4 is rotated in the opposite direction to close the first through hole 213, the second through hole 421 and the third through hole 411. Then, the spring 442 is squeezed upward to separate the positioning hole 422 and the pin on the upper end face of the base plate 212. Then the sample storage tube 4 can be taken out from the drilling tube 21. A new sample storage tube 4 can be reinstalled to continue sampling. This design ensures that the sample in the sample storage tube 4 will not leak when it is taken out, thus ensuring that the sample will not spill or be contaminated.

[0037] It should be noted that the specific model and specifications of the sampling head 22 and spring 442 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0038] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A sampling device for highway engineering, comprising a support (1), characterized in that: a sampler (2) is arranged on the support (1), the sampler (2) comprises a drilling cylinder (21) and a sampling head (22) coaxially connected, a rotating shaft (3) is coaxially connected to the top end of the drilling cylinder (21), a sample storage tube (4) is detachably embedded in the inside of the drilling cylinder (21), a bottom rotating end (42) is rotationally connected to the bottom end of the sample storage tube (4), a plurality of second through holes (421) corresponding to the drilling cylinder (21) and the sample storage tube (4) are uniformly arranged on the bottom rotating end (42), and the sample storage tube (4) and the second through holes (421) are opened and closed by rotating the sample storage tube (4) relative to the bottom rotating end (42). A cavity for embedding the sample storage tube (4) is arranged in the drilling cylinder (21), a limiting ring (211) and a bottom plate (212) are coaxially connected to the bottom end of the drilling cylinder (21), the limiting ring (211) is located at one end of the bottom plate (212) facing the sampling head (22), a plurality of first through holes (213) corresponding to the plurality of second through holes (421) are uniformly arranged on the bottom plate (212), and a plurality of pin rods are uniformly connected to one end of the bottom plate (212) away from the limiting ring (211).

2. A sampling device for use in road works as claimed in claim 1, wherein, The bottom end of the sample storage tube (4) is a bottom fixed end (41), a plurality of third through holes (411) corresponding to the second through holes (421) are uniformly arranged on the bottom fixed end (41), and a plurality of limiting pins (412) are uniformly arranged on one end of the bottom fixed end (41) facing the bottom rotating end (42).

3. A sampling device for use in highway engineering as claimed in claim 2, wherein, The bottom rotating end (42) is rotationally connected to the sample storage tube (4), a plurality of positioning holes (422) for inserting and cooperating with the pin rods on the bottom plate (212) are uniformly arranged on the bottom rotating end (42), and a plurality of arc-shaped holes (423) for slidingly cooperating with the limiting pins (412) are uniformly arranged on the bottom rotating end (42).

4. A sampling device for use in road works as claimed in claim 3 wherein, The angle of rotation of the limiting pin (412) in the arc-shaped hole (423) is half of the angle between two adjacent second through holes (421).

5. A sampling device for use in road works as claimed in claim 4 wherein, A through hole is arranged at the top end of the sample storage tube (4), a top cover (43) is embedded at the top end of the sample storage tube (4), an air hole (431) intercommunicating with the through hole on the sample storage tube (4) is arranged on the top cover (43), and a plurality of connecting columns (432) are uniformly arranged on the upper end surface of the top cover (43).

6. A sampling device for use in highway engineering as claimed in claim 2, wherein, An elastic assembly (44) is connected to the top side of the top cover (43), the elastic assembly (44) comprises a baffle (441) fixed to the connecting column (432), and a spring (442) is fixed to the baffle (441).

7. A sampling device for use in road works as claimed in claim 6 wherein, The other end of the spring (442) abuts against the inner top of the drilling cylinder (21).

8. A sampling device for use in road works as claimed in claim 7 wherein, ​

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