Dustproof soil sampling device for engineering supervision

Abstract

The application relates to the technical field of highway construction, in particular to a dustproof soil taking device for engineering supervision, which comprises a sampling support frame, a positioning frame, an adjusting frame, a feeding box, a hollow protective pipe, a soil material frame and a rotating arm, the positioning frame is threadedly sleeved at the inner side of the sampling support frame, the adjusting frame is slidably sleeved at the outer side of the positioning frame, the feeding box is fixedly connected at the bottom of the adjusting frame, and the hollow protective pipe is rotationally connected at the bottom of the feeding box. The dustproof soil taking device for engineering supervision can rotate the hollow protective pipe and the soil material frame in the hollow protective pipe together through a driving motor, so that the sampling process is changed from the traditional "vertical pressing" into "rotary cutting into soil", the rotary cutting mode can more effectively cut off soil particles, the extrusion and disturbance of the soil body around the sample are smaller compared with the pure pressing mode, the undisturbed nature of the obtained soil sample is better, the soil sample can better represent the real physical properties of the soil layer under the stress state in the field, and the reliability of detection data is further improved.

Description

Technical Field

[0001] This application relates to the field of highway construction technology, and in particular to a dust-proof soil sampling device for engineering supervision. Background Technology

[0002] Highway engineering refers to the surveying, measurement, design, construction, maintenance, and management of highway structures. Highway engineering structures include: roadbed, pavement, bridges, culverts, tunnels, drainage systems, safety protection facilities, greening and traffic monitoring facilities, as well as buildings, workshops, and other service facilities used for construction, maintenance, and monitoring.

[0003] A search revealed that CN220927787U discloses a soil sampling device for on-site supervision in highway engineering. The device is moved to its designated position, and a positioning block is brought into contact with the ground to fix it. Before fixing, the handle is used to pull the lever, moving the movable block. The connecting block at the top of the sampling cylinder is then inserted into the fixed base. Releasing the handle allows the spring force to engage the locking rod with the connecting block, securing the sampling cylinder. The drive motor is then activated, rotating the lead screw. This rotation causes the movable plate to descend, allowing the fixed base to insert the sampling cylinder into the soil for sampling. The amount of soil to be sampled is determined by the scale lines on the handle. After sampling, pulling the handle separates the locking rod from the connecting block, allowing the sampling cylinder to be removed.

[0004] Regarding the aforementioned technologies, the inventors believe the following technical defects require improvement: The construction site environment is harsh, and the surface of the soil sampling point is typically covered with a layer of loose, dry dust, fine-grained soil, or debris left from previous construction. This layer differs significantly from the compacted main soil sample underneath in density, moisture content, and composition. Due to pressure, a temporary, localized low-pressure or turbulent zone forms inside the cutting ring. Loose dust at and around the cutting edge cannot be effectively and completely expelled; it is carried away, sucked in, and mixed into the actual soil sample as the cutting ring sinks, thus reducing the accuracy of the test. Utility Model Content

[0005] This application provides a dustproof soil sampling device for engineering supervision to improve the following technical problem: the surface of the soil sampling point is usually covered with a layer of loose, dry dust, fine soil or debris left from previous construction. As the ring cutter sinks, it is entrained, sucked in and mixed into the formal soil sample, thereby reducing the accuracy of the test.

[0006] This application provides a dust-proof soil sampling device for engineering supervision, which adopts the following technical solution:

[0007] A dustproof soil sampling device for engineering supervision includes a sampling support frame, a positioning frame, an adjusting frame, a feeding box, a hollow protective tube, a soil material frame, and a rotating arm. The positioning frame is threaded onto the inner side of the sampling support frame, the adjusting frame is slidably fitted onto the outer side of the positioning frame, the feeding box is fixedly connected to the bottom of the adjusting frame, the hollow protective tube is rotatably connected to the bottom of the feeding box, the soil material frame is slidably fitted onto the inner bottom of the hollow protective tube, and the top of the rotating arm is fixedly connected to the outer wall of the hollow protective tube.

[0008] In one feasible technical solution of this application, the top of the sampling support frame is further provided with a stepper motor, a threaded rod and a limiting post. The motor shaft of the stepper motor is fixedly connected to the top of the threaded rod through a coupling, and the two sides of the limiting post are fixedly connected to the surface of the sampling support frame.

[0009] In one feasible technical solution of this application, the top of the positioning frame is preferably provided with a propulsion cylinder and a push rod, the piston end of the propulsion cylinder is fixedly connected to one end of the push rod, and the outer side of the push rod is fixedly connected to the top of the adjustment frame.

[0010] In one feasible technical solution of this application, an ash pump is also threadedly connected to one side of the feed box.

[0011] In one feasible technical solution of this application, a drive motor is also provided at the bottom of the feed box, and the motor shaft of the drive motor is fixedly connected to the top of the hollow protective tube through a coupling.

[0012] In one feasible technical solution of this application, a lifting cylinder and a connecting rod are further provided inside the hollow protective tube. The lifting cylinder is threadedly connected to the top inner side of the hollow protective tube, and the bottom of the connecting rod is fixedly connected to the middle of the soil material frame.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] This device, controlled by a stepper motor, threaded rod, and hydraulic cylinder, achieves a constant pressing speed and uniform sampling depth. This avoids result deviations caused by inconsistent force, speed, and technique among different operators, standardizing the sampling process, ensuring repeatable results, and enabling data comparison. The drive motor rotates the hollow protective tube and the internal soil sample frame together, transforming the sampling process from the traditional "vertical pressing" to "rotary cutting into the soil." The rotary cutting method more effectively cuts soil particles, causing less compression and disturbance to the surrounding soil compared to pure pressing, resulting in better original soil sample quality and a more representative representation of the true physical properties of the soil layer under on-site stress, further improving the reliability of the test data. The lifting cylinder, via a connecting rod, smoothly ejects the soil sample-filled frame from the hollow protective tube, facilitating safe and non-destructive sample handling. This avoids the risk of sample damage caused by manual digging in traditional methods, making this device adaptable to the sampling needs of different parts of highway engineering, such as roadbed, pavement base, and subgrade. It is powerful, easy to operate, and highly practical. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the dustproof soil extraction device for engineering supervision in an embodiment of this application.

[0017] Figure 2 This is a distribution diagram of the inner threaded grooves of the positioning frame in the embodiments of this application.

[0018] Figure 3 This is an unfolded view of the adjustment frame in an embodiment of this application.

[0019] Figure 4 This is a cross-sectional view of the hollow protective tube in the embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 11. Sampling support frame; 12. Positioning frame; 13. Adjusting frame; 14. Feed box; 15. Hollow protective tube; 16. Soil material frame; 17. Rotating arm; 2. Stepper motor; 3. Threaded rod; 4. Limiting post; 5. Propulsion cylinder; 6. Push rod; 7. Ash pump; 8. Drive motor; 9. Lifting cylinder; 10. Connecting rod. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a dust-proof soil sampling device for engineering supervision. (Refer to...) Figures 1 to 4 The dustproof soil sampling device for engineering supervision includes a sampling support frame 11, a positioning frame 12, an adjusting frame 13, a feeding box 14, a hollow protective tube 15, a soil material frame 16, and a rotating arm 17. The positioning frame 12 is threaded onto the inner side of the sampling support frame 11, the adjusting frame 13 is slidably fitted onto the outer side of the positioning frame 12, the feeding box 14 is fixedly connected to the bottom of the adjusting frame 13, the hollow protective tube 15 is rotatably connected to the bottom of the feeding box 14, the soil material frame 16 is slidably fitted onto the inner bottom of the hollow protective tube 15, and the top of the rotating arm 17 is fixedly connected to the outer wall of the hollow protective tube 15.

[0028] The top of the sampling support frame 11 is also equipped with a stepper motor 2, a threaded rod 3 and a limiting post 4. The motor shaft of the stepper motor 2 is fixedly connected to the top of the threaded rod 3 through a coupling, and the two sides of the limiting post 4 are fixedly connected to the surface of the sampling support frame 11.

[0029] The top of the positioning frame 12 is preferably equipped with a push cylinder 5 and a push rod 6. The piston end of the push cylinder 5 is fixedly connected to one end of the push rod 6, and the outer side of the push rod 6 is fixedly connected to the top of the adjusting frame 13.

[0030] A ash pump 7 is also threadedly connected to one side of the feed box 14.

[0031] The bottom of the feed box 14 is also equipped with a drive motor 8, and the motor shaft of the drive motor 8 is fixedly connected to the top of the hollow protective tube 15 through a coupling.

[0032] The hollow protective tube 15 is also equipped with a lifting cylinder 9 and a connecting rod 10. The lifting cylinder 9 is threadedly connected to the top inner side of the hollow protective tube 15, and the bottom of the connecting rod 10 is fixedly connected to the middle of the soil material frame 16.

[0033] The general process of using the dustproof soil extraction device for engineering supervision in this application embodiment is as follows:

[0034] The sampling support frame 11 is stably placed above the predetermined sampling point. The stepper motor 2 drives the threaded rod 3 to rotate, thereby causing the positioning frame 12, which is threadedly connected to it, to move up and down along the guide of the limiting post 4, initially adjusting the entire sampling system to a suitable height. The push cylinder 5 at the top of the positioning frame 12 is activated, pushing the push rod 6 downwards. Since the push rod 6 is fixedly connected to the adjusting frame 13, the adjusting frame 13 slides along the outside of the positioning frame 12, ultimately causing the feed box 14 and hollow protective tube 15 at its bottom to move downwards until the bottom end of the hollow protective tube 15 is in close contact with the ground. At this point, the hollow protective tube 15 isolates and surrounds the sampling area. The ash pump 7 connected to one side of the feed box 14 is turned on. The negative pressure suction generated by the ash pump 7 thoroughly removes loose dust, debris, and other pollutants from the ground inside the hollow protective tube 15, preparing for accurate sampling.

[0035] During sampling, the drive motor 8 at the bottom of the feed box 14 is started. The drive motor 8 drives the hollow protective tube 15 and the rotating arm 17 fixed to its outer wall to rotate together through the coupling. At the same time, the propulsion cylinder 5 continuously applies downward pressure. Under the combined action of rotation and downward pressure, the soil material frame 16, which is slidably sleeved on the inner side of the bottom of the hollow protective tube 15, is smoothly screwed into the cleaned soil layer to obtain the uncontaminated original soil sample. After sampling is completed, the drive motor 8 stops rotating, the propulsion cylinder 5 retracts, and the entire sampling mechanism is lifted. Then, the lifting cylinder 9 is started, and the lifting cylinder 9 pushes the connecting rod 10 downward. Because the bottom of the connecting rod 10 is fixedly connected to the middle of the soil material frame 16, the soil material frame 16, which is full of soil sample, is smoothly and undamagedly pushed out from the bottom of the hollow protective tube 15 so that the staff can take it away for subsequent testing.

[0036] The beneficial technical effects of the dust-proof soil extraction device for engineering supervision in this application embodiment are roughly as follows:

[0037] This device, controlled by a stepper motor 2, a threaded rod 3, and a hydraulic cylinder, can achieve a constant downward pressing speed and a uniform sampling depth. This avoids result deviations caused by inconsistent force, speed, and technique among different operators, making the sampling process standardized, the results repeatable, and the data comparable. The drive motor 8 rotates the hollow protective tube 15 and the soil material frame 16 inside together, changing the sampling process from the traditional "vertical pressing" to "rotational cutting into the soil". The rotational cutting method can more effectively cut soil particles. Compared with the pure pressing method, it causes less compression and disturbance to the soil around the sample, and the obtained soil sample has better original state and can better represent the true physical properties of the soil layer under on-site stress, further improving the reliability of the test data. The lifting cylinder 9 can smoothly push the soil material frame 16 filled with soil sample out of the hollow protective tube 15 through the connecting rod 10, which is convenient for safe and non-destructive sample handling. It avoids the risk of sample damage caused by manual digging in traditional methods. This device can adapt to the sampling needs of different parts such as roadbed, pavement base, and subgrade in highway engineering. It is powerful, easy to operate, and highly practical.

[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust-proof soil extraction device for engineering supervision, characterized in that, The device includes a sampling support frame (11), a positioning frame (12), an adjusting frame (13), a feeding box (14), a hollow protective tube (15), a soil material frame (16), and a rotating arm (17). The positioning frame (12) is threaded onto the inner side of the sampling support frame (11), the adjusting frame (13) is slidably fitted onto the outer side of the positioning frame (12), the feeding box (14) is fixedly connected to the bottom of the adjusting frame (13), the hollow protective tube (15) is rotatably connected to the bottom of the feeding box (14), the soil material frame (16) is slidably fitted onto the inner side of the bottom of the hollow protective tube (15), and the top of the rotating arm (17) is fixedly connected to the outer wall of the hollow protective tube (15).

2. The dust-proof soil extraction device for engineering supervision according to claim 1, characterized in that, The top of the sampling support frame (11) is also provided with a stepper motor (2), a threaded rod (3) and a limiting post (4). The motor shaft of the stepper motor (2) is fixedly connected to the top of the threaded rod (3) through a coupling. The two sides of the limiting post (4) are fixedly connected to the surface of the sampling support frame (11).

3. The dust-proof soil extraction device for engineering supervision according to claim 1, characterized in that, The top of the positioning frame (12) is preferably provided with a propulsion cylinder (5) and a push rod (6). The piston end of the propulsion cylinder (5) is fixedly connected to one end of the push rod (6), and the outer side of the push rod (6) is fixedly connected to the top of the adjustment frame (13).

4. The dust-proof soil extraction device for engineering supervision according to claim 1, characterized in that, A ash pump (7) is also threadedly connected to one side of the feed box (14).

5. The dust-proof soil extraction device for engineering supervision according to claim 4, characterized in that, The bottom of the feed box (14) is also provided with a drive motor (8), and the motor shaft of the drive motor (8) is fixedly connected to the top of the hollow protective tube (15) through a coupling.

6. The dust-proof soil extraction device for engineering supervision according to claim 5, characterized in that, The hollow protective tube (15) is also equipped with a lifting cylinder (9) and a connecting rod (10). The lifting cylinder (9) is threadedly connected to the top inner side of the hollow protective tube (15), and the bottom of the connecting rod (10) is fixedly connected to the middle of the soil material frame (16).

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