A geotechnical sampler for detecting

Abstract

This utility model belongs to the field of soil and rock sampling technology, and in particular to a soil and rock sampler for testing. It includes an outer tube, a crushing tube, and a connecting ring. A sliding sleeve is slidably connected to the outer tube. A feed hole is opened on the outer wall of the outer tube. An installation sleeve is installed at the bottom of the outer tube. A support plate is installed on the inner wall of the installation sleeve. Three equally spaced scrapers are hinged to the outer wall of the support plate. A conical push rod is slidably connected to the inner wall of the outer tube. An electric push rod B is installed inside the crushing tube. A reset push rod corresponding to the scraper is installed at the driving end of the electric push rod B. The device achieves targeted sampling through the cooperation structure of the sliding sleeve and the feed hole. The scraper installed on the support plate can be used to crush the surrounding soil and rock under the push of the conical push rod. The position of the scraper can be reset by the electric push rod B and the reset push rod, allowing the sliding sleeve to cover the feed hole, preventing sample confusion and improving sampling accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of soil and rock sampling technology, and specifically relates to a soil and rock sampler for testing. Background Technology

[0002] The accuracy of soil and rock sample collection directly determines the reliability of subsequent testing data, which in turn affects the rationality of engineering design and construction safety. Currently, most commonly used soil and rock samplers in the industry adopt an "open-feed" structure, meaning that a fixed feed port is opened on the outer wall of the sampling tube. A driving device presses the sampling tube into the soil and rock layer, and the sample enters the inner cavity of the sampling tube using the soil and rock's own pressure or negative pressure. The feed port of existing samplers is usually in a normally open state. As the sampling tube moves from the surface to the target depth, shallow soil and rock will directly enter the feed port and remain in the inner cavity of the sampling tube. When the sampling tube reaches the target depth, the newly collected target layer soil and rock will mix with the shallow soil and rock, resulting in the final sample containing soil and rock components from multiple depth ranges. This makes it impossible to accurately reflect the true physical and mechanical properties of the target layer. This sample mixing problem can cause deviations in subsequent testing data, and in severe cases, may lead to misjudgments in engineering design and increase construction risks. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a soil and rock sampler for testing, thereby solving the aforementioned issues.

[0004] To achieve the above objectives, a soil and rock sampler for testing includes an outer tube, a crushing tube, and a connecting ring. A sliding sleeve is slidably connected to the outer tube, and a feed hole is provided on the outer wall of the outer tube. An installation sleeve is installed at the bottom of the outer tube, and a support plate is installed on the inner wall of the installation sleeve. Three equally spaced scrapers are hinged to the outer wall of the support plate, and a vertical rod is installed at the center of the support plate. A slider is slidably connected to the outer wall of the vertical rod, and a support block is installed on the outer wall of the slider. A conical push rod is slidably connected to the inner wall of the outer tube, and an electric push rod B is installed inside the crushing tube. A reset push rod corresponding to the scraper is installed at the driving end of the electric push rod B.

[0005] Preferably, a plurality of connecting rods are installed in the feed hole, and the scraper rod is offset from the connecting rods.

[0006] Preferably, the tapered push rod is slidably connected to the upright, the outer wall of the upright is fitted with a spring, and the support block corresponds to the inner side of the scraper rod.

[0007] Preferably, one end of the reset push rod passes through the mounting sleeve, and the reset push rod is slidably connected to the outer side of the scraper rod.

[0008] Preferably, an electric actuator A is installed on the inner wall of the outer tube of the sampler, and one end of the electric actuator A is connected to the top of the conical actuator.

[0009] Preferably, an adjusting ring is rotatably connected to the top of the sliding sleeve, and the adjusting ring is threadedly connected to the outer wall of the sampler outer tube.

[0010] This utility model has the following beneficial effects: The device achieves targeted sampling through the cooperation structure of the sliding sleeve and the feed hole. This prevents shallow soil and rock from entering the inner cavity during the downward movement of the sampler's outer tube. The scraper installed on the support plate can be expanded and broken up by the push of the conical pusher. The scraper position can be reset by the electric pusher B and the reset pusher, so that the sliding sleeve can cover the outside of the feed hole, ensuring that the sampled sample is not confused and improving the sampling accuracy. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the movement of the sliding sleeve in this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This utility model Figure 3 An enlarged diagram of A in the diagram.

[0012] In the diagram: 1. Sampler outer tube; 11. Crushing tube; 12. Connecting ring; 2. Sliding sleeve; 21. Adjusting ring; 22. Feed hole; 23. Connecting rod; 3. Mounting sleeve; 31. Support plate; 32. Scraper; 33. Vertical rod; 34. Sliding block; 341. Support block; 35. Spring; 36. Conical push rod; 37. Electric push rod A; 4. Electric push rod B; 41. Reset push rod. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0014] Example 1: like Figure 1As shown in Figure 4, this utility model provides the following technical solution: it includes a sampler outer tube 1, a crushing tube 11, and a connecting ring 12. A sliding sleeve 2 is slidably connected to the sampler outer tube 1. A feed hole 22 is opened on the outer wall of the sampler outer tube 1. An installation sleeve 3 is installed at the bottom of the sampler outer tube 1. A support plate 31 is installed on the inner wall of the installation sleeve 3. Three equally spaced scraper rods 32 are hinged to the outer wall of the support plate 31. A vertical rod 33 is installed at the center of the support plate 31. A slider 34 is slidably connected to the outer wall of the vertical rod 33. A support block 341 is installed on the outer wall of the slider 34. A conical push rod 36 is slidably connected to the inner wall of the sampler outer tube 1. An electric push rod B4 is installed inside the crushing tube 11. A reset push rod 41 corresponding to the scraper rod 32 is installed at the driving end of the electric push rod B4.

[0015] In this embodiment, the device includes a sampler outer tube 1, a crushing tube 11, and a connecting ring 12 connected to the driving device. The sampler outer tube 1 is a hollow cylindrical structure used to accommodate soil and rock samples and internal components. After the sampler outer tube 1 and the crushing tube 11 are driven as a whole, the soil and rock are crushed through the crushing tube 11, causing the sliding sleeve 2 to penetrate into the soil and rock, thus displacing the opening position of the feed hole 22 to the sampling area. The opening position of the feed hole 22 is closed by the sliding sleeve 2 sliding on the outer wall of the sampler outer tube 1. The sliding sleeve 2 can move axially along the outer wall of the sampler outer tube 1. When the feed hole 22 moves upward, the soil and rock enter the sampler outer tube 1 through the feed hole 22. Inside the cavity, soil and rock samples are collected. An installation sleeve 3 is installed at the bottom of the sampler's outer tube 1. A support plate 31 is installed at the center of the inner wall of the installation sleeve 3. Three equidistantly distributed arc-shaped claw scrapers 32 are hinged to the outer wall of the support plate 31. The claws can rotate around the hinge to adjust their angle on the support plate 31. A vertical rod 33 is welded to the center of the support plate 31. A slider 34 is slidably connected to the outer wall of the vertical rod 33. Three support blocks 341 are integrally formed on the outer wall of the slider 34, corresponding to the inner sides of the scrapers 32. A conical push rod 36 is slidably connected to the inner wall of the sampler's outer tube 1. The conical push rod 36 can move along... The sampler outer tube 1 moves axially to push the slider 34, causing the support block 341 to push the scraper 32. As the support block 341 moves downward, it pushes the scraper 32 outward, allowing it to penetrate the surrounding rock and soil. The sampler outer tube 1 is driven as a whole, causing the scraper 32 to break up the rock and soil around the sampler outer tube 1, allowing the rock and soil to enter the sampler outer tube 1. After the rock and soil enter, the sliding sleeve 2 slides to seal the feed hole 22, thus allowing the rock and soil in this area to be collected separately, avoiding confusion with rock and soil at other depths. An electric actuator B is fixed inside the breaking tube 11 by bolts. 4. The drive end of the electric actuator B4 is equipped with a reset push rod 41 via a coupling. The reset push rod 41 corresponds to the outer position of the scraper 32. After collecting soil and rock samples, the tapered push rod 36 moves upward to reset the scraper 32, causing the reset push rod 41 to push the scraper 32 back to the position misaligned with the feed hole 22 inside the sampler outer tube 1. This allows the sliding sleeve 2 to move downward to close the feed hole 22. As a result, the device can shift the opening position of the feed hole 22 used for collecting soil and rock samples into the soil and rock while preventing soil and rock samples of other depths from entering when the sampler outer tube 1 and the crushing tube 11 move downward. This ensures the accuracy of soil and rock collection and is beneficial for accurate soil and rock testing.

[0016] Several connecting rods 23 are installed inside the feed hole 22, and the scraper 32 is offset from the connecting rods 23. When the sampler outer tube 1 moves down to the target sampling depth, the adjusting ring 21 is rotated to drive the sliding sleeve 2 to move up, and the feed hole 22 is fully exposed. At this time, the electric push rod A37 drives the conical push rod 36 to move down, and the support block 341 pushes the scraper 32 to unfold outward and break the surrounding rock and soil. Under the action of pressure, the rock and soil enter the sampler outer tube 1 through the feed hole 22. The connecting rod 23 is used to ensure that the sampler outer tube 1 will not separate. After sampling is completed, the sliding sleeve 2 moves down to close the feed hole 22, providing a more accurate sample basis.

[0017] The tapered push rod 36 is slidably connected to the upright rod 33. A spring 35 is sleeved on the outer wall of the upright rod 33. The support block 341 corresponds to the inner side of the scraper rod 32. The elastic reset function of the spring 35 allows the slider 34 to be reset to the top position when the scraper rod 32 is closed. This allows the reset push rod 41 to reset the scraper rod 32, ensuring that the inner side of the scraper rod 32 is supported by the support block 341. This ensures that the tapered push rod 36 is positioned between the scraper rods 32 during the next use, preventing it from being supported on the scraper rod 32 and making it difficult for the scraper rod 32 to open at an angle.

[0018] One end of the reset push rod 41 passes through the mounting sleeve 3, and the reset push rod 41 is slidably connected to the outside of the scraper 32. The reset push rod 41 extends out along the guide hole through the mounting sleeve 3, and slides along the outer slide rail of the scraper 32, applying an inward thrust to make the scraper 32 completely retract to the position misaligned with the feed hole 22.

[0019] An electric actuator A37 is installed on the inner wall of the outer tube 1 of the sampler. One end of the electric actuator A37 is connected to the top of the conical actuator 36. The electric actuator A37 is connected to the drive device connected to the connecting ring 12 through a wire. It is controlled by the control panel on the drive device to extend and shorten the electric actuator A37. During sampling, the electric actuator A37 extends, pushing the conical actuator 36 to move downward along the axis of the upright 33, thereby pushing the slider 34 and the support block 341, so that the scraper 32 unfolds and breaks the rock and soil. After sampling is completed, the electric actuator A37 shortens, pulling the conical actuator 36 upward, and the slider 34 and the scraper 32 are initially reset with the help of the spring 35.

[0020] An adjusting ring 21 is rotatably connected to the top of the sliding sleeve 2, and the adjusting ring 21 is threadedly connected to the outer wall of the sampler outer tube 1. Before sampling, the adjusting ring 21 is rotated counterclockwise, and the sliding sleeve 2 moves down to completely cover the feed hole 22, preventing shallow soil and rock from entering the sampler outer tube 1 during the downward movement of the sampler outer tube 1. After reaching the target depth, the adjusting ring 21 is rotated clockwise to determine the number of rotations according to the required opening size of the feed hole 22, and the sliding sleeve 2 moves up to expose the feed hole 22, at which point sampling can begin. After sampling is completed, the adjusting ring 21 is rotated counterclockwise, and the sliding sleeve 2 moves down to close the feed hole 22.

[0021] The working principle of this technical solution is as follows: When using the soil and rock sampler for testing, first fix the connecting ring 12 to the external drive device, then start the drive device, crush the soil and rock through the crushing pipe 11, drive the device to move downward, and stop after the feed hole 22 is sent to the target depth by the depth instrument. Then, rotate the adjusting ring 21 clockwise to move the sliding sleeve 2 upward to expose the feed hole 22, start the electric actuator A37 to push the conical actuator 36 and the slider 34 downward, and push the scraper 32 through the support block 341 to unfold the crushed soil and rock. After the sample passes through... After the feed hole 22 enters the outer tube 1 of the sampler, the adjusting ring 21 is rotated counterclockwise to close the feed hole 22 with the sliding sleeve 2. Then, the electric push rod A37 is shortened and the electric push rod B4 is activated to drive the reset push rod 41 to push the scraper 32 to reset. The spring 35 drives the slider 34 to reset and then retracts the device through the connecting ring 12. Finally, the device is placed on the worktable, the sample outlet is opened to pour out the sample and mark it, the residual rock and soil in the feed hole 22, scraper 32 and other parts are cleaned, and the wear of the elastic parts and sliding surfaces is checked to complete the entire usage process.

[0022] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the invention; these examples are merely for the purpose of helping to understand the method and core ideas of the invention. The above descriptions are only preferred embodiments of the invention. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of the invention, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this invention.

Claims

1. A geotechnical sampling device for detecting, comprising a sampler outer tube (1), a breaking tube (11) and a connecting ring (12), characterized in that, A sliding sleeve (2) is slidably connected to the outer tube (1) of the sampler. A feed hole (22) is opened on the outer wall of the outer tube (1) of the sampler. An installation sleeve (3) is installed at the bottom of the outer tube (1) of the sampler. A support plate (31) is installed on the inner wall of the installation sleeve (3). Three equally spaced scrapers (32) are hinged to the outer wall of the support plate (31). A vertical rod (33) is installed at the center of the support plate (31). A slider (34) is slidably connected to the outer wall of the vertical rod (33). A support block (341) is installed on the outer wall of the slider (34). A conical push rod (36) is slidably connected to the inner wall of the outer tube (1) of the sampler. An electric push rod B (4) is installed inside the crushing tube (11). A reset push rod (41) corresponding to the scraper (32) is installed at the driving end of the electric push rod B (4).

2. A geotechnical sampling device for use in detection according to claim 1, characterised in that: A plurality of connecting rods (23) are installed inside the feed hole (22), and the scraper (32) is offset from the connecting rods (23).

3. A geotechnical sampling device for use in detection according to claim 1, characterised in that: The tapered push rod (36) is slidably connected to the upright rod (33), and a spring (35) is sleeved on the outer wall of the upright rod (33). The support block (341) corresponds to the inner side of the scraper rod (32).

4. A geotechnical sampling device for testing according to claim 1, wherein: One end of the reset push rod (41) passes through the mounting sleeve (3), and the reset push rod (41) is slidably connected to the outside of the scraper rod (32).

5. The geotechnical sampler for testing according to claim 1, wherein: An electric push rod A (37) is installed on the inner wall of the outer tube (1) of the sampler, and one end of the electric push rod A (37) is connected to the top of the tapered push rod (36).

6. A geotechnical sampling device for testing according to claim 1, wherein: The top of the sliding sleeve (2) is rotatably connected to an adjusting ring (21), which is threadedly connected to the outer wall of the sampler outer tube (1).

Images