Anti-deflection guide for static sounding rod

Abstract

The utility model relates to the field of probe rod anti - deflection, disclose a kind of anti - deflection guiding device of static sounding probe rod, including base, the base outer wall is fixedly connected with connecting frame, the connecting frame top is fixedly connected with fixed frame, the fixed frame inner wall is fixedly connected with fixed block, the fixed block side wall is fixedly connected with hollow column, the hollow column is provided with adjusting assembly;The adjusting assembly includes limit ring, the limit ring outer wall is fixedly connected in hollow column inner wall, the limit ring inner wall is slidably connected with sliding column, and the sliding column outer wall is fixedly connected with sliding ring.In the utility model, when probe rod is inserted into the side wall of annular, it will push sliding column to make it slide in hollow column inner wall, while sliding ring is moved together with sliding column, and then spring is compressed by sliding ring movement, the problem of guiding jamming or probe rod wear caused by insufficient alignment accuracy when probe rod is initially inserted is solved, and the guiding smoothness of the anti - deflection guiding device of probe rod is improved.

Description

Technical Field

[0001] This utility model relates to the field of probe rod anti-deflection, and in particular to an anti-deflection guide device for a static cone penetration probe rod. Background Technology

[0002] Static cone penetration testing (CPPT), a commonly used in-situ testing method in geological exploration, involves pressing a probe-equipped rod into the ground segment by segment to obtain the mechanical parameters of the soil layers, providing crucial data support for foundation design and engineering geological evaluation. During the probe insertion process, factors such as the heterogeneity of the underground soil layers, equipment base settlement, and the probe's excessive slenderness ratio can easily cause horizontal deviation of the probe. This not only leads to distorted probe test data but also causes the probe to bend or break, increasing construction costs and safety risks.

[0003] In existing technologies, static cone penetrometers often employ a fixed guide frame structure to constrain the penetration path of the probe. These guide devices typically consist of a set of rigid positioning rings or guide sleeves, which are fixedly mounted on the frame of the penetrometer via support arms. The technical principle is based on the limited clearance between a machined circular hole and the outer wall of the probe. During the probe's descent, the hole wall provides continuous lateral constraint, thereby limiting the probe's lateral displacement and theoretically maintaining its vertical penetration.

[0004] However, this type of rigidly fixed guide structure has significant limitations: because the diameter and position of its guide hole are fixed after installation and cannot be dynamically adjusted, even a slight alignment error between the probe and the guide hole during the initial insertion stage will cause the probe end to collide and jam against the rigid inner wall of the guide device. This rigid contact not only leads to an unsmooth insertion process and causes jamming, but also causes severe wear on the probe surface due to continuous friction, affecting its structural strength and service life in the long term. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an anti-skew guide device for a static cone penetration probe, which aims to improve the problem of guide jamming or probe wear caused by insufficient alignment accuracy during the initial insertion of the probe.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a guide device for preventing deviation of a static cone penetration probe, comprising a base, a connecting frame fixedly connected to the outer wall of the base, a fixing frame fixedly connected to the top of the connecting frame, a fixing block fixedly connected to the inner wall of the fixing frame, a hollow column fixedly connected to the side wall of the fixing block, and an adjustment component provided on the hollow column.

[0007] The adjusting assembly includes a limiting ring, the outer wall of which is fixedly connected to the inner wall of the hollow column. A sliding column is slidably connected to the inner wall of the limiting ring, and a sliding ring is fixedly connected to the outer wall of the sliding column. A spring is provided on the side wall of the sliding ring, one end of which is fixedly connected to the side wall of the sliding ring, and the other end of which is fixedly connected to the side wall of the limiting ring. A baffle is fixedly connected to one end of the sliding column, and a damage prevention component is provided at one end of the sliding column.

[0008] As a further description of the above technical solution:

[0009] The damage prevention component includes a ring, the outer wall of which is fixedly connected to one end of a sliding column, and a support plate is fixedly connected to the inner wall of the ring. A rotating wheel is rotatably connected to the inner wall of the support plate.

[0010] As a further description of the above technical solution:

[0011] A fixing plate is fixedly connected to the side wall of the fixed frame, and a third connecting plate is fixedly connected to the side wall of the fixing plate.

[0012] As a further description of the above technical solution:

[0013] The bottom of the fixed plate is fixedly connected to a first connecting plate, and the side wall of the first connecting plate is rotatably connected to a first rotating plate.

[0014] As a further description of the above technical solution:

[0015] A cylinder is fixedly connected to the side wall of the first rotating plate, and a second connecting plate is fixedly connected to the output end of the cylinder.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the second connecting plate is rotatably connected to a second rotating plate, the inner wall of the second rotating plate is rotatably connected to the side wall of the third connecting plate, and the side wall of the second rotating plate is rotatably connected to a third rotating plate.

[0018] As a further description of the above technical solution:

[0019] The third rotating plate is rotatably connected to a sliding plate. One end of the sliding plate is fixedly connected to a wear-resistant plate. A limit block is fixedly connected to the top of the fixed plate. The outer wall of the sliding plate is slidably connected to the inner wall of the limit block.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when the probe is inserted into the side wall of the ring, it pushes the sliding column to slide on the inner wall of the hollow column. At the same time, the movement of the sliding column drives the sliding ring to move together. Subsequently, the movement of the sliding ring compresses the spring, achieving the effect of adaptive guidance of the probe. This solves the problem of guide jamming or probe wear caused by insufficient alignment accuracy when the probe is initially inserted, and improves the guiding smoothness of the probe's anti-skew guidance device.

[0022] 2. In this utility model, the second connecting plate is driven to move by the output end of the cylinder. The movement of the second connecting plate will drive the second rotating plate to rotate on the inner wall of the third connecting plate. Then, the force on the second rotating plate will drive the third rotating plate and the sliding plate to move. Subsequently, the movement of the sliding plate will drive the wear-resistant plate to move, so that its side wall pushes the probe rod, thereby achieving the effect of correcting the deviation of the probe rod. This solves the problem of axis deviation caused by uneven soil resistance during probe rod drilling and improves the verticality of the probe rod anti-deviation guide device. Attached Figure Description

[0023] Figure 1 This is a perspective view of an anti-skew guide device for a static cone penetration test rod proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the top structure of the connecting frame of the anti-skew guide device for a static cone penetration probe proposed in this utility model.

[0025] Figure 3 This is a schematic cross-sectional view of the fixing block of the anti-skew guide device for a static cone penetration probe proposed in this utility model.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the fixed frame sidewall structure of an anti-skew guide device for a static cone penetration test rod proposed in this utility model.

[0028] Legend:

[0029] 1. Base; 2. Connecting frame; 3. Fixing frame; 4. Fixing block; 5. Hollow column; 6. Ring; 7. Support plate; 8. Rotating wheel; 9. Sliding column; 10. Sliding ring; 11. Baffle; 12. Spring; 13. Limiting ring; 14. First connecting plate; 15. Fixing plate; 16. First rotating plate; 17. Cylinder; 18. Second connecting plate; 19. Second rotating plate; 20. Third connecting plate; 21. Third rotating plate; 22. Sliding plate; 23. Wear-resistant plate; 24. Limiting block. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1-4 This utility model provides an embodiment of an anti-deviation guide device for a static penetration test probe, comprising a base 1, which serves as the basic support component of the device, connects and fixes a connecting frame 2, thereby providing stable support for the overall guide frame formed by the connecting frame 2 and the fixing frame 3, ensuring that the device does not shift during probe drilling, and ensuring the stability of the probe's initial penetration. The connecting frame 2 is fixedly connected to the outer wall of the base 1. The base 1 is assembled with the connecting frame 2 and the fixing frame 3 to form a complete probe guide frame, providing a stable penetration channel for the probe, ensuring that the adjustment component and the correction component work together within the frame, and avoiding the effect of probe guidance failure due to frame loosening. The fixing frame 3 is fixedly connected to the top of the connecting frame 2, and a fixing block 4 is fixedly connected to the inner wall of the fixing frame 3. A hollow column 5 is fixedly connected to the side wall of the fixing block 4, and the hollow column 5 is provided with an adjustment component.

[0032] The adjustment assembly includes a limiting ring 13, which guides and limits the sliding of the sliding column 9 and connects to one end of the spring 12. This ensures that the sliding column 9 slides along the axis of the hollow column 5, preventing the ring 6 from failing to fit the probe due to the sliding column 9's offset. It also provides a fixed support point for the spring 12. The outer wall of the limiting ring 13 is fixedly connected to the inner wall of the hollow column 5. The sliding column 9 is slidably connected to the inner wall of the limiting ring 13. A sliding ring 10 is fixedly connected to the outer wall of the sliding column 9. A spring 12 is provided on the side wall of the sliding ring 10. The spring 12 connects the sliding ring 10 and the limiting ring 13, generating a reverse elastic force according to the probe's offset. This adaptively adjusts the displacement of the sliding column 9, ensuring that the ring 6 always fits against the outer wall of the probe, offsetting the probe's centering error, ensuring the probe smoothly enters the preset guide path, and preventing jamming. One end of the spring 12 is fixedly connected to the sliding column 9. The other end of the spring 12 is fixedly connected to the side wall of the limiting ring 13. The limiting ring 13 cooperates with the sliding column 9 to slide axially, achieving precise constraint on the sliding direction of the sliding column 9, avoiding radial offset of the sliding column 9, and ensuring that the sliding column 9 drives the ring 6 to always fit against the outer wall of the probe rod, thus stabilizing the centering position. A baffle 11 is fixedly connected to one end of the sliding column 9, and a damage prevention component is provided at one end of the sliding column 9. The damage prevention component includes the ring 6. The outer wall of the ring 6 is fixedly connected to one end of the sliding column 9, and a support plate 7 is fixedly connected to the inner wall of the ring 6. A rotating wheel 8 is rotatably connected to the inner wall of the support plate 7. The rotating wheel 8 is used to contact the outer wall of the probe rod and roll with the probe rod, thereby converting the sliding friction between the probe rod and the ring 6 into rolling friction, reducing the wear of the outer wall of the probe rod from the source, avoiding damage to the outer wall of the probe rod due to friction, and extending the service life of the probe rod.

[0033] Reference Figure 1 , Figure 2 and Figure 5A fixing plate 15 is fixedly connected to the side wall of the fixing frame 3. A third connecting plate 20 is fixedly connected to the side wall of the fixing plate 15. A first connecting plate 14 is fixedly connected to the bottom of the fixing plate 15. The first connecting plate 14 is used to fix itself to the bottom of the fixing plate 15 and serves as the rotation fulcrum of the first rotating plate 16, thereby providing rotational support for the first rotating plate 16. Together with the second rotating plate 19, it forms a symmetrical linkage transmission structure to avoid damage from overload on a single component. The first rotating plate 16 is rotatably connected to the side wall of the first connecting plate 14. A cylinder 17 is fixedly connected to the side wall of the first rotating plate 16. A second connecting plate 18 is fixedly connected to the output end of the cylinder 17. A second connecting plate 18 is rotatably connected to the inner wall of the second connecting plate 18. The rotating plate 19 is rotatably connected to the side wall of the third connecting plate 20. The side wall of the second rotating plate 19 is rotatably connected to the third rotating plate 21. The sliding plate 22 is rotatably connected to the third rotating plate 21. The sliding plate 22 is used to connect the third rotating plate 21 and the wear-resistant plate 23. It slides linearly under the constraint of the limiting block 24, thereby ensuring that the wear-resistant plate 23 moves in a direction perpendicular to the probe axis, avoiding the sliding plate 22 from deflecting and causing the correction force to become unbalanced, and ensuring that the wear-resistant plates 23 on both sides are subjected to symmetrical correction forces. The wear-resistant plate 23 is fixedly connected to one end of the sliding plate 22. The limiting block 24 is fixedly connected to the top of the fixed plate 15. The outer wall of the sliding plate 22 is slidably connected to the inner wall of the limiting block 24.

[0034] Working principle: When the probe is initially inserted, it first contacts the rotating wheel 8 on the inner wall of the ring 6. The rotating wheel 8 converts the sliding friction between the probe and the ring 6 into rolling friction through its own rotation, reducing the wear on the outer wall of the probe from the source and achieving damage prevention protection. If there is a slight centering deviation of the probe, its outer wall will generate a lateral thrust on the ring 6, pushing the ring 6 to drive the sliding column 9 to slide along the inner wall of the hollow column 5. The limiting ring 13 plays a precise guiding role for the sliding column 9, preventing the sliding column 9 from deviating. The sliding column 9 simultaneously drives the sliding ring 10 on the outer wall to compress the spring 12. The reverse elastic force generated by the spring 12 will adaptively adjust the displacement of the sliding column 9 according to the degree of probe deviation, so that the ring 6 always fits the outer wall of the probe and dynamically adjusts the guiding position. This not only avoids the jamming caused by the rigid collision between the probe and the device, but also offsets the influence of centering error through elastic buffering, ensuring that the probe smoothly enters the preset path within the overall guide frame composed of the base 1, connecting frame 2, and fixing frame 3.

[0035] When the probe rod deviates from its axis during drilling due to uneven resistance in the underground soil, cylinder 17 is activated. The output end of cylinder 17 pushes the second connecting plate 18 to move linearly, causing the second rotating plate 19 to rotate around the third connecting plate 20. At the same time, the second rotating plate 19 pulls the first rotating plate 16 to rotate synchronously around the first connecting plate 14, forming a stable linkage transmission structure that can avoid overload of a single component. As the second rotating plate 19 rotates, its other end drives the third rotating plate 21 to push the sliding plate 22. The sliding plate 22 maintains linear sliding under the constraint of the limiting block 24 to prevent the sliding plate 22 from deviating and causing an imbalance in the correction force. This, in turn, drives the wear-resistant plate 23 at the end to move towards the probe rod. The wear-resistant plates 23 on both sides will apply symmetrical lateral correction forces to the probe rod, gradually pushing the deviated probe rod back to the vertical penetration path, effectively offsetting the interference of uneven soil resistance on the probe rod axis, and ensuring that the probe rod continues to drill vertically.

Claims

1. A deflection prevention and guiding device for a static cone penetration test rod, comprising a base (1), characterized in that: The base (1) has a connecting frame (2) fixedly connected to its outer wall, a fixing frame (3) fixedly connected to the top of the connecting frame (2), a fixing block (4) fixedly connected to the inner wall of the fixing frame (3), a hollow column (5) fixedly connected to the side wall of the fixing block (4), and an adjustment component provided on the hollow column (5). The adjustment assembly includes a limiting ring (13), the outer wall of which is fixedly connected to the inner wall of the hollow column (5), a sliding column (9) is slidably connected to the inner wall of the limiting ring (13), a sliding ring (10) is fixedly connected to the outer wall of the sliding column (9), a spring (12) is provided on the side wall of the sliding ring (10), one end of the spring (12) is fixedly connected to the side wall of the sliding ring (10), the other end of the spring (12) is fixedly connected to the side wall of the limiting ring (13), a baffle (11) is fixedly connected to one end of the sliding column (9), and a damage prevention component is provided on one end of the sliding column (9).

2. The anti-skew guiding device for a static cone penetration test rod according to claim 1, characterized in that: The damage prevention component includes a ring (6), the outer wall of which is fixedly connected to one end of a sliding column (9), and a support plate (7) is fixedly connected to the inner wall of the ring (6). A rotating wheel (8) is rotatably connected to the inner wall of the support plate (7).

3. The anti-skew guiding device for a static cone penetration test rod according to claim 1, characterized in that: The fixed frame (3) is fixedly connected to a fixed plate (15) on its side wall, and the fixed plate (15) is fixedly connected to a third connecting plate (20) on its side wall.

4. The anti-skew guiding device for a static cone penetration test rod according to claim 3, characterized in that: The bottom of the fixed plate (15) is fixedly connected to the first connecting plate (14), and the side wall of the first connecting plate (14) is rotatably connected to the first rotating plate (16).

5. The anti-skew guiding device for a static cone penetration test rod according to claim 4, characterized in that: A cylinder (17) is fixedly connected to the side wall of the first rotating plate (16), and a second connecting plate (18) is fixedly connected to the output end of the cylinder (17).

6. The anti-skew guiding device for a static cone penetration test rod according to claim 5, characterized in that: The inner wall of the second connecting plate (18) is rotatably connected to the second rotating plate (19), the inner wall of the second rotating plate (19) is rotatably connected to the side wall of the third connecting plate (20), and the side wall of the second rotating plate (19) is rotatably connected to the third rotating plate (21).

7. The anti-skew guiding device for a static cone penetration test rod according to claim 6, characterized in that: The third rotating plate (21) is rotatably connected to a sliding plate (22), and a wear-resistant plate (23) is fixedly connected to one end of the sliding plate (22). A limiting block (24) is fixedly connected to the top of the fixed plate (15), and the outer wall of the sliding plate (22) is slidably connected to the inner wall of the limiting block (24).

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