Soil sample screening device for geotechnical testing
By employing multi-layer screening and automated cleaning mechanisms, the problems of low screening efficiency and insufficient accuracy of traditional geotechnical testing devices have been solved, achieving efficient and accurate soil sample screening and reducing human operation errors and sieve wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO10 ENGINEERING GROUP THIRD CONSTRUCTION CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional geotechnical testing equipment suffers from low screening efficiency and insufficient accuracy. Manual operation is prone to introducing errors, making it unable to meet the high-precision screening requirements for batch soil samples.
It adopts a multi-layer screening mechanism and an automated cleaning mechanism. The multi-layer screen is driven by a drive component to vibrate and screen, combined with elastic support and automated cleaning, to achieve multi-layer efficient screening and accurate grading.
It improves screening efficiency, reduces labor costs, minimizes screen wear, and ensures screening accuracy and continuous, efficient operation of the equipment.
Smart Images
Figure CN224525232U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil sample screening technology, and in particular to a soil sample screening device for geotechnical testing. Background Technology
[0002] In geotechnical engineering, road and bridge construction, and geological exploration, geotechnical testing is a crucial step in obtaining the physical and mechanical properties of soil. Soil sample screening, as a core step in pre-test treatment, directly affects the accuracy and reliability of the test results. According to relevant standards such as the "Code for Geotechnical Engineering Investigation," accurate determination of parameters such as particle size distribution and moisture content of soil samples requires fine grading and screening of the soil samples.
[0003] In terms of efficiency, traditional single-layer screen structures have low screening efficiency and are too time-consuming when testing batches of soil samples. Regarding accuracy, the screen is prone to deformation under long-term vibration, leading to deviations in screen aperture size, which cannot meet the high-precision screening requirements of fine-grained soils (such as silt and clay). In terms of automation...
[0004] Traditional equipment relies on manual feeding, vibration parameter adjustment, and screen cleaning, which is not only labor-intensive but also prone to errors during operation. For example, manual cleaning of the screen may damage the screen structure, or residual soil may affect subsequent test results. Therefore, a soil sample screening device for geotechnical testing is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a soil sample screening device for geotechnical testing, which aims to improve the problem that some screening devices in the prior art cannot perform multi-layer screening.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A soil sample screening device for geotechnical testing includes a support plate, a screening mechanism fixedly connected to the inner side of the support plate, a cleaning mechanism fixedly connected to the inner side of the support plate, a driving assembly, a connecting support column fixedly connected to the outer side of the driving assembly, connecting rotating rods fixedly connected to the outer sides of the connecting support column, a connecting vibrating rod fixedly connected to the outer side of the connecting rotating rods (i.e., the end away from the connecting support column), a filter screen fixedly connected to the outer side of the connecting vibrating rod, four spring plates fixedly connected to the outer side of the filter screen, four spring plates fixedly connected to the outer side of the filter screen, a filter screen fixedly connected to the inner side of the spring plates, and the outer side of the spring plates slidably connected to the outer side of the spring plates.
[0008] As a further description of the above technical solution:
[0009] The cleaning mechanism includes a second rotating motor, a second connecting rotating rod fixedly connected to the drive end of the second rotating motor, a supporting rotating disk fixedly connected to the outside of the second connecting rotating rod, and the outside of the second rotating motor fixedly connected to the outside of the first filter screen.
[0010] As a further description of the above technical solution:
[0011] The outer side of the second filter screen is slidably connected to the outside of the support fixing plate, the outer side of the first filter screen is slidably connected to the outside of the support fixing plate, and the outer side of the first filter screen is slidably connected to the outside of the second filter screen.
[0012] As a further description of the above technical solution:
[0013] The outer surfaces of the second spring sheet and the first spring sheet are slidably connected to the outside of the support fixing plate, and the outer surface of the drive assembly is fixedly connected to the inside of the support fixing plate.
[0014] As a further description of the above technical solution:
[0015] The drive assembly includes a rotary motor, the drive end of which is fixedly connected to a rotary connecting rod, and the outside of the rotary motor is fixedly connected to the outside of the support plate.
[0016] As a further description of the above technical solution:
[0017] The first rotating connecting rod is rotatably connected to the outside of the support fixing plate, the first rotating connecting rod is fixedly connected to the inside of the connecting support column, and the outside of the connecting support column is rotatably connected to the outside of the support fixing plate.
[0018] As a further description of the above technical solution:
[0019] The external of the supporting rotating disk is fixedly connected to a supporting rotating column one. The external of the supporting rotating column one is rotatably connected to a rotating connecting rod two. The external end of the rotating connecting rod two, that is, the end away from the supporting rotating disk, is fixedly connected to the supporting rotating column two. The external of the supporting rotating column two is rotatably connected to a connecting rotating rod three.
[0020] As a further description of the above technical solution:
[0021] A reciprocating cleaning brush is fixedly connected to the outer end of the connecting rotating rod three, i.e., the end away from the supporting rotating column two. The bottom of the reciprocating cleaning brush is slidably connected to the bottom of the filter screen one. The outer side of the connecting rotating rod three is rotatably connected to the inner side of the supporting fixed plate. The outer sides of the rotating connecting rod two and the connecting rotating rod three are rotatably connected to the outer side of the supporting fixed plate. Four universal wheels are fixedly connected to the bottom of the supporting fixed plate. A push rod is fixedly connected to the outer side of the supporting fixed plate.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, during operation, the drive rotating connecting rod rotates, which in turn drives the connecting support column and the two connecting rotating rods to rotate, causing the connecting vibrating rod to move back and forth, thus driving the filter screen one and filter screen two to vibrate synchronously. Spring plate one and spring plate two provide elastic support for the screen, ensuring stable operation of the screen, realizing multi-layer efficient screening, and synchronous operation of multiple screens. The elastic buffer of the spring plates can reduce screen wear and extend service life. The structure is compact and highly interconnected, adaptable to various soil types, and effectively meets the diverse screening needs of geotechnical tests.
[0024] 2. In this utility model, automated cleaning reduces the tediousness and time cost of manual cleaning, improves efficiency, and the reciprocating cleaning brush fits the screen structure to deeply clean the soil accumulation in the gaps, avoids particles clogging the screen holes, and ensures the accuracy of subsequent screening. The mechanically driven cleaning force is uniform, which can reduce the risk of screen damage and extend service life compared with manual cleaning. The cleaning process does not require disassembling the screen, making operation convenient and ensuring the continuous and efficient operation of the soil sample screening device. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of the soil sample screening device for geotechnical testing proposed in this utility model.
[0026] Figure 2 This is a schematic diagram of the support and fixing plate of the soil sample screening device for geotechnical testing proposed in this utility model.
[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0028] Figure 4 This is a schematic diagram of the connecting support column of the soil sample screening device for geotechnical testing proposed in this utility model.
[0029] Legend:
[0030] 1. Support plate; 2. Screening mechanism; 21. Drive assembly; 211. Rotary motor one; 212. Rotary connecting rod one; 22. Connecting support column; 23. Connecting rotating rod one; 24. Connecting vibrating rod; 25. Filter screen one; 26. Spring plate one; 27. Spring plate two; 28. Filter screen two; 3. Cleaning mechanism; 31. Rotary motor two; 32. Connecting rotating rod two; 33. Supporting rotating disk; 34. Supporting rotating column one; 35. Rotary connecting rod two; 36. Supporting rotating column two; 37. Connecting rotating rod three; 38. Reciprocating cleaning brush; 4. Push rod; 5. Caster wheel. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a soil sample screening device for geotechnical testing, including a support plate 1, which serves as the basic load-bearing structure of the entire screening device, providing stable installation support for the screening mechanism 2 and the cleaning mechanism 3, ensuring the device remains stable during operation, and avoiding structural displacement or damage due to vibration or other factors. The screening mechanism 2 and the cleaning mechanism 3 are fixedly connected to the inner side of the support plate 1. The screening mechanism 2 includes a drive assembly 21, which provides a power source for the screening mechanism 2, and drives the screen to vibrate through mechanical transmission to achieve graded screening of soil samples. The drive assembly 21 is fixedly connected to a connecting support column 22, which supports the vibration movement of the screen and the connecting rotating rods 23 on both sides, and the linear reciprocating motion of the connecting vibration rods 24, providing vibration power for the screen.
[0033] Connecting rotating rod 23 is fixedly connected to both sides of the connecting support column 22. Connecting vibrating rod 24 is fixedly connected to the outer end of connecting rotating rod 23, i.e., the end away from connecting support column 22, which directly drives the filter screen 25 to vibrate, realizing the separation of particles of different sizes. Filter screen 25 is fixedly connected to the outer side of connecting vibrating rod 24. Soil samples are graded and screened through screens of different aperture sizes. Spring plate 26 and spring plate 27 provide elastic support and buffer for the screen, ensuring stable vibration of the screen. Four spring plates 26 and four spring plates 27 are fixedly connected to the outer side of filter screen 25.
[0034] A filter screen 28 is fixedly connected to the inner side of spring plate 27. Filter screen 25 and filter screen 28 are elastically connected by spring plate 26 and spring plate 27. Spring plate 27 is nested outside spring plate 26, and its outer surface is slidably connected to the outside of spring plate 26. Filter screen 28 is slidably connected to the outside of support plate 1. Filter screen 25 is slidably connected to the outside of support plate 1, and its outer surface is slidably connected to the outside of filter screen 28. Filter screens 25 and 28 with different pore sizes can respectively trap soil particles of different sizes, achieving multi-layer screening.
[0035] Spring sheet 27 and spring sheet 26 are externally slidably connected to the outside of the support plate 1. The drive assembly 21 is externally fixedly connected to the inside of the support plate 1. The drive assembly 21 includes a rotary motor 211. The drive end of the rotary motor 211 is fixedly connected to a rotary connecting rod 212. The rotary motor 211 is externally fixedly connected to the outside of the support plate 1. The rotary connecting rod 212 is externally rotatably connected to the outside of the support plate 1. The rotary connecting rod 212 is externally fixedly connected to the inside of the connecting support column 22. The connecting support column 22 is externally rotatably connected to the outside of the support plate 1.
[0036] Reference Figures 1 to 3 The cleaning mechanism 3 includes a second rotating motor 31, which provides power to the cleaning mechanism 3 and drives the cleaning components to move, thereby achieving automatic cleaning of the bottom of the filter screen 25. A second connecting rotating rod 32 is fixedly connected to the drive end of the second rotating motor 31, transmitting and converting the rotational motion of the second rotating motor 31, driving the first supporting rotating column 34 to perform circular motion. A supporting rotating disk 33 is fixedly connected to the outside of the connecting rotating rod 32. The second rotating motor 31 is fixedly connected to the outside of the filter screen 25, and the supporting rotating column 34 is fixedly connected to the outside of the supporting rotating disk 33.
[0037] A rotating connecting rod 35 is rotatably connected to the outside of the supporting rotating column 34. The outside of the rotating connecting rod 35, that is, the end away from the supporting rotating disk 33, is fixedly connected to the supporting rotating column 36. A connecting rotating rod 37 is rotatably connected to the outside of the supporting rotating column 36, which converts the circular motion of the supporting rotating disk 33 into the linear reciprocating motion of the reciprocating cleaning brush 38, thereby cleaning the bottom of the filter screen 25.
[0038] Working principle: When screening is required, the operation of the rotating motor 211 drives the rotating connecting rod 212 to rotate, which in turn drives the connecting support column 22 to rotate. This, in turn, drives the rotating connecting rods 23 on both sides to rotate, which in turn drives the connecting vibrating rod 24 to move back and forth. At the same time, it drives the filter screen 25 and the filter screen 28 to vibrate. Meanwhile, the spring plate 27 and the spring plate 26 provide support for the vibration of the filter screen 25 and the filter screen 28, thus ensuring the normal screening operation of the filter screen 28 and the filter screen 25, thereby achieving the effect of multi-layer screening and increasing the screening efficiency.
[0039] When the surface of the filter screen 25 needs to be cleaned, the operation of the rotating motor 31 drives the rotation of the connecting rotating rod 32 and the supporting rotating disk 33, thereby driving the rotation of the supporting rotating column 34, which in turn drives the rotation of the rotating connecting rod 35 and the supporting rotating column 36, thereby driving the rotation of the connecting rotating rod 37, which in turn drives the sliding of the reciprocating cleaning brush 38, thereby cleaning the bottom of the filter screen 25 to achieve the required cleaning effect.
[0040] A reciprocating cleaning brush 38 is fixedly connected to the outer end of the connecting rotating rod 37, i.e., the end away from the supporting rotating column 2 36. The bottom of the reciprocating cleaning brush 38 is slidably connected to the bottom of the filter screen 25. The outer side of the connecting rotating rod 37 is rotatably connected to the inner side of the supporting fixing plate 1. The rotating connecting rod 2 35 and the outer side of the connecting rotating rod 37 are rotatably connected to the outer side of the supporting fixing plate 1. Four universal wheels 5 are fixedly connected to the bottom of the supporting fixing plate 1. A push rod 4 is fixedly connected to the outer side of the supporting fixing plate 1.
[0041] Working principle: When screening is required, the operation of the rotating motor 211 drives the rotating connecting rod 212 to rotate, which in turn drives the connecting support column 22 to rotate. This, in turn, drives the rotating connecting rods 23 on both sides to rotate, which in turn drives the connecting vibrating rod 24 to move back and forth. At the same time, it drives the filter screen 25 and the filter screen 28 to vibrate. Meanwhile, the spring plate 27 and the spring plate 26 provide support for the vibration of the filter screen 25 and the filter screen 28, thus ensuring the normal screening operation of the filter screen 28 and the filter screen 25, thereby achieving the effect of multi-layer screening and increasing the screening efficiency.
[0042] When the surface of the filter screen 25 needs to be cleaned, the operation of the rotating motor 31 drives the rotation of the connecting rotating rod 32 and the supporting rotating disk 33, thereby driving the rotation of the supporting rotating column 34, which in turn drives the rotation of the rotating connecting rod 35 and the supporting rotating column 36, thereby driving the rotation of the connecting rotating rod 37, which in turn drives the sliding of the reciprocating cleaning brush 38, thereby cleaning the bottom of the filter screen 25 to achieve the required cleaning effect.
[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A soil sample screening device for geotechnical testing, comprising a support and fixing plate (1), characterized in that: A screening mechanism (2) is fixedly connected to the inner side of the support fixing plate (1), and a cleaning mechanism (3) is fixedly connected to the inner side of the support fixing plate (1). The screening mechanism (2) includes a drive assembly (21). A connecting support column (22) is fixedly connected to the outside of the drive assembly (21). A connecting rotating rod (23) is fixedly connected to both sides of the outside of the connecting support column (22). A connecting vibration rod (24) is fixedly connected to the outside of the connecting rotating rod (23), i.e., the end away from the connecting support column (22). A filter screen (25) is fixedly connected to the outside of the connecting vibration rod (24). Four spring plates (26) are fixedly connected to the outside of the filter screen (25). Four spring plates (27) are fixedly connected to the outside of the filter screen (25). A filter screen (28) is fixedly connected to the inside of the spring plates (27). The outside of the spring plates (27) is slidably connected to the outside of the spring plates (26).
2. The soil sample screening device for geotechnical testing according to claim 1, characterized in that: The cleaning mechanism (3) includes a second rotating motor (31), the drive end of the second rotating motor (31) is fixedly connected to a second connecting rotating rod (32), the outside of the second connecting rotating rod (32) is fixedly connected to a supporting rotating disk (33), and the outside of the second rotating motor (31) is fixedly connected to the outside of the first filter screen (25).
3. The soil sample screening device for geotechnical testing according to claim 1, characterized in that: The outer side of the second filter screen (28) is slidably connected to the outside of the support fixing plate (1), the outer side of the first filter screen (25) is slidably connected to the outside of the support fixing plate (1), and the outer side of the first filter screen (25) is slidably connected to the outside of the second filter screen (28).
4. The soil sample screening device for geotechnical testing according to claim 3, characterized in that: The outer surfaces of the second spring sheet (27) and the first spring sheet (26) are slidably connected to the outside of the support fixing plate (1), and the outer surface of the drive assembly (21) is fixedly connected to the inside of the support fixing plate (1).
5. The soil sample screening device for geotechnical testing according to claim 4, characterized in that: The drive assembly (21) includes a first rotating motor (211), the drive end of which is fixedly connected to a first rotating connecting rod (212), and the outside of the first rotating motor (211) is fixedly connected to the outside of the support fixing plate (1).
6. The soil sample screening device for geotechnical testing according to claim 5, characterized in that: The external of the rotating connecting rod (212) is rotatably connected to the outside of the support fixing plate (1), the external of the rotating connecting rod (212) is fixedly connected to the inside of the connecting support column (22), and the external of the connecting support column (22) is rotatably connected to the outside of the support fixing plate (1).
7. The soil sample screening device for geotechnical testing according to claim 2, characterized in that: The external of the supporting rotating disk (33) is fixedly connected to a supporting rotating column one (34). The external of the supporting rotating column one (34) is rotatably connected to a rotating connecting rod two (35). The external end of the rotating connecting rod two (35), that is, the end away from the supporting rotating disk (33), is fixedly connected to a supporting rotating column two (36). The external of the supporting rotating column two (36) is rotatably connected to a connecting rotating rod three (37).
8. The soil sample screening device for geotechnical testing according to claim 7, characterized in that: A reciprocating cleaning brush (38) is fixedly connected to the outer end of the connecting rotating rod three (37), that is, the end away from the supporting rotating column two (36). The bottom of the reciprocating cleaning brush (38) is slidably connected to the bottom of the filter screen one (25). The outer side of the connecting rotating rod three (37) is rotatably connected to the inner side of the supporting fixing plate (1). The outer side of the rotating connecting rod two (35) and the outer side of the connecting rotating rod three (37) are rotatably connected to the outer side of the supporting fixing plate (1). Four universal wheels (5) are fixedly connected to the bottom of the supporting fixing plate (1). A push rod (4) is fixedly connected to the outer side of the supporting fixing plate (1).