A foundation pile testing and fixing device

Abstract

This utility model relates to the field of pile foundation testing technology and discloses a pile foundation testing fixing device, including a base frame, a guide rail frame fixedly installed on the top of the base frame, a hammer block arranged inside the guide rail frame, a diagonal brace assembly arranged on the guide rail frame, and a limit assembly arranged on the base frame. The diagonal brace assembly and the limit assembly correspond to each other, wherein one end of the diagonal brace assembly is installed at the top of the side wall of the guide rail frame, and the other end of the diagonal brace assembly is movably installed at the top of the side wall of the base frame. In this utility model, by setting the diagonal brace assembly and the limit assembly, when the hammer block impacts and causes the guide rail frame to shake, the shaking force at the top of the guide rail frame can be transmitted to the limit assembly through the diagonal brace assembly, thereby causing the limit cone to insert into the soil around the base frame. This effectively avoids the base frame from shifting due to frequent and large-amplitude shaking of the guide rail frame, significantly enhances the stability of the entire testing device, ensures the accuracy of the hammer block impact position in retesting and multiple testing operations, and improves the reliability of the testing data.

Description

Technical Field

[0001] This utility model relates to the field of foundation pile testing technology, and more specifically to a foundation pile testing fixing device. Background Technology

[0002] After the foundation piles are cast and formed, relevant tests need to be carried out to determine the bearing capacity and integrity of the piles, so as to ensure that the safety hazards of buildings, bridges and other projects will not occur due to pile foundation problems during use. The main testing methods include low strain method, core drilling method, static load test and high strain method.

[0003] When using the high-strain method to test the foundation piles, a heavy hammer is used to impact the top of the pile, causing sufficient relative displacement between the pile and the soil to fully stimulate the soil resistance around the pile and the soil resistance at the pile tip. The stress wave signal of the pile is received by force and acceleration sensors installed on both sides of the pile body below the pile top. The stress wave theory is applied to analyze and process the force and velocity time history curves, thereby determining the bearing capacity and integrity of the pile body.

[0004] Therefore, in high strain gauge testing, a hammer is usually required to impact the foundation pile in free fall while being guided and transported by a guide rail. During free fall impact, the pressure from the hammer can easily cause the guide rail to shake. Currently, some guide rails are usually long and narrow. When shaking occurs, the deformation amplitude at the top of the guide rail is the largest. As the falling height of the hammer increases, the shaking amplitude of the guide rail under the influence of pressure increases. Frequent and large-amplitude shaking can easily cause the base to shift, resulting in changes in the impact position of the hammer during retesting. This can easily lead to large deviations in the multi-hammer data, and the average value of the multi-hammer data may not meet the requirements. To address this, we propose a foundation pile testing fixing device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a foundation pile testing and fixing device to solve the fixing problem in foundation pile testing.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: it includes a base frame, a guide rail frame is fixedly installed on the top of the base frame, a hammer block is provided inside the guide rail frame, a diagonal brace assembly is provided on the guide rail frame, and a limit assembly is provided on the base frame. The diagonal brace assembly and the limit assembly correspond to each other, wherein one end of the diagonal brace assembly is installed at the top position of the side wall of the guide rail frame, and the other end of the diagonal brace assembly is movably installed at the top position of the side wall of the base frame.

[0007] Preferably, the diagonal bracing assembly includes a diagonal brace, a limiting plate, a movable groove, and a fixed rod. The limiting plate is fixedly installed on both sides at the middle position of the top of the side wall of the base frame. The fixed rod is fixedly installed between the two sets of limiting plates. The diagonal brace is inclinedly arranged on the side wall of the guide rail frame. One end of the diagonal brace is installed on the side wall of the guide rail frame, and the other end extends to the corresponding position between the two sets of limiting plates. The movable groove is opened on the side wall of the diagonal brace at the position corresponding to the two sets of limiting plates. The diagonal brace is movably installed on the fixed rod through the movable groove.

[0008] Preferably, an auxiliary adjustment groove is provided on the inner side of the movable groove. The top and bottom of the auxiliary adjustment groove are both arc-shaped. An auxiliary ball is fixedly installed in the middle of the fixed rod corresponding to the position of the auxiliary adjustment groove. The auxiliary ball is spherical and block-shaped, and the outer diameter of the auxiliary ball is adapted to the inner diameter of the auxiliary adjustment groove.

[0009] Preferably, an adjusting ball is fixedly installed at one end of the guide rail frame corresponding to the diagonal brace, and a universal groove is opened on the diagonal brace corresponding to the position of the adjusting ball, with the adjusting ball located in the universal groove.

[0010] Preferably, the limiting assembly includes a lower pressure plate, a pushing rod, a limiting cone, an adjusting groove, a fixed guide rod, and a movable sleeve. The pushing rod is an "L"-shaped plate, with its top corresponding to the bottom of the inclined brace assembly. The lower pressure plate is fixedly installed at the bottom of the pushing rod, and the limiting cone is fixedly installed at intervals at the bottom of the lower pressure plate. The adjusting groove is opened on the side wall of the base frame corresponding to the position of the pushing rod. The fixed guide rod is fixedly installed inside the adjusting groove, with its top and bottom ends respectively installed at the upper and lower ends of the adjusting groove. The movable sleeve is movably fitted onto the fixed guide rod, and the movable sleeve and the pushing rod are fixedly connected to each other.

[0011] Preferably, a base plate is fixedly installed on the side wall of the base frame corresponding to the bottom of the lower pressure plate, and an auxiliary hole is opened on the side wall of the base plate corresponding to the position of the limiting cone.

[0012] Preferably, a connecting sleeve is fixedly installed on the top of the limiting cone, and the top of the connecting sleeve and the corresponding wall surface of the bottom of the lower pressure plate are fixedly connected to each other. A movable groove is opened in the middle of the top of the limiting cone. The movable groove is a spherical groove, and a movable ball is set inside the movable groove. The movable ball is a spherical block. A connecting block is fixedly installed on the top of the movable ball, and the top of the connecting block is fixedly installed on the corresponding wall surface of the bottom of the lower pressure plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by setting up a bracing component and a limiting component, when the hammer impacts and causes the guide rail frame to shake, the shaking force at the top of the guide rail frame can be transmitted to the limiting component through the bracing component, thereby causing the limiting cone to insert into the soil around the base frame. This effectively avoids the base frame from shifting due to frequent and large-amplitude shaking of the guide rail frame, significantly enhancing the stability of the entire testing device, ensuring the accuracy of the hammer impact position in retesting and multiple testing operations, and improving the reliability of the testing data.

[0014] In this invention, the movable groove and movable ball at the top of the limiting cone allow the limiting cone to adjust its angle according to external factors such as the placement of the equipment and the strength of the soil at the corresponding location when it is pressed downward. Multiple sets of limiting cones are inserted into the soil at different angles, which can more effectively limit the base frame in multiple directions and greatly improve the limiting effect on the base frame. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the foundation pile detection and fixing device in Embodiment 1 of this utility model; Figure 2 This is a partial structural diagram of the limiting component in Embodiment 1 of this utility model; Figure 3 This is a partial structural schematic diagram of the diagonal brace component in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the connection between the diagonal brace and the guide rail frame in Embodiment 1 of this utility model; Figure 5 This is a partial structural diagram of the limiting cone in Embodiment 2 of this utility model; Figure 6 This is a partial cross-sectional view of the limiting cone in Embodiment 2 of this utility model.

[0016] Legend: 1. Base frame; 2. Guide rail frame; 3. Hammer block; 4. Diagonal brace; 5. Limiting plate; 6. Moving groove; 7. Base plate; 8. Auxiliary hole; 9. Lower pressure plate; 10. Push rod; 11. Limiting cone; 12. Adjusting groove; 13. Fixed guide rod; 14. Moving sleeve; 15. Auxiliary adjustment groove; 16. Fixed rod; 17. Auxiliary ball; 18. Adjusting ball; 19. Universal groove; 20. Connecting sleeve; 21. Connecting block; 22. Movable groove; 23. Movable ball. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0018] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0019] Example 1: like Figure 1 - Figure 4 As shown, a foundation pile testing and fixing device includes a base frame 1, a guide rail frame 2 is fixedly installed on the top of the base frame 1, a hammer block 3 is arranged inside the guide rail frame 2, and the top of the hammer block 3 is connected to the inside of the guide rail frame 2 by a sling to move up and down. The connection method between the top of the hammer block 3 and the sling is a disclosed technology and will not be described in detail here.

[0020] Furthermore, the guide rail frame 2 is provided with a diagonal brace assembly, and the base frame 1 is provided with a limit assembly, with the diagonal brace assembly and the limit assembly corresponding to each other.

[0021] Furthermore, one end of the diagonal brace assembly is installed at the top of the side wall of the guide rail frame 2, and the other end of the diagonal brace assembly is movably installed at the top of the side wall of the base frame 1.

[0022] In this embodiment, the inclined brace assembly can cause the guide rail frame 2 to shake due to the pressure generated by the free fall of the hammer block 3. The deformation amplitude generated by the shaking of the top of the guide rail frame 2 will be transmitted to the inclined brace assembly, so that the inclined brace assembly can be adjusted accordingly. Under the limitation of the top of the limiting assembly and the limitation of the limiting assembly by the ground, the deformation amplitude of the top of the guide rail frame 2 is limited.

[0023] Furthermore, by transmitting the deformation amplitude of the guide rail frame 2 through the diagonal bracing component, the limiting component restricts the base frame 1 in multiple directions, which can effectively prevent the base frame 1 from being displaced due to the frequent shaking of the guide rail frame 2.

[0024] Furthermore, the diagonal bracing assembly includes a diagonal brace 4, a limiting plate 5, a movable groove 6, and a fixed rod 16. The limiting plate 5 is fixedly installed on both sides at the middle position of the top of the side wall of the base frame 1. The fixed rod 16 is fixedly installed between the two sets of limiting plates 5. The diagonal brace 4 is inclinedly set on the side wall of 2. One end of the diagonal brace 4 is installed on the side wall of 2, and the other end extends to the corresponding position between the two sets of limiting plates 5. The movable groove 6 is opened on the side wall of 4 at the position corresponding to the two sets of limiting plates 5. The diagonal brace 4 is movably installed on the fixed rod 16 through the movable groove 6. The diagonal brace 4 can be moved and adjusted on the fixed rod 16 by the movable groove 6.

[0025] Specifically, the adjustment range of the diagonal brace 4 is limited by the length of the moving groove 6, so that the diagonal brace 4 can only be adjusted according to the length of the moving groove 6, thereby limiting the swaying deformation range of the top of the guide rail frame 2.

[0026] In this embodiment, when the top of the guide rail frame 2 shakes, the top of the guide rail frame 2 will press against the diagonal brace 4 at the corresponding position, causing the bottom of the diagonal brace 4 to move downward through the moving groove 6 and press against the limiting component at the corresponding position.

[0027] Furthermore, an auxiliary adjustment groove 15 is provided on the inner side of the movable groove 6. The top and bottom of the auxiliary adjustment groove 15 are both arc-shaped. An auxiliary ball 17 is fixedly installed in the middle of the fixed rod 16 corresponding to the position of the auxiliary adjustment groove 15. The auxiliary ball 17 is a spherical block, and the outer diameter of the auxiliary ball 17 is adapted to the inner diameter of the auxiliary adjustment groove 15.

[0028] In this embodiment, the auxiliary adjustment groove 15 and the auxiliary ball 17 are provided so that when the guide rail frame 2 shakes, it can drive the diagonal brace 4 to produce a small tilting displacement.

[0029] Furthermore, an adjusting ball 18 is fixedly installed at one end of the guide rail frame 2 corresponding to the diagonal brace 4, and a universal groove 19 is opened on the diagonal brace 4 corresponding to the position of the adjusting ball 18, with the adjusting ball 18 located in the universal groove 19.

[0030] Specifically, by adjusting the ball 18 and the universal groove 19, one end of the diagonal brace 4 can be tilted with the ball 18 as the base point.

[0031] Furthermore, the limiting assembly includes a lower pressure plate 9, a push rod 10, a limiting cone 11, an adjusting groove 12, a fixed guide rod 13, and a movable sleeve 14. The push rod 10 is an "L"-shaped plate, with the top of the push rod 10 corresponding to the bottom of the inclined support assembly. The lower pressure plate 9 is fixedly installed at the bottom of the push rod 10, and the limiting cone 11 is fixedly installed at intervals at the bottom of the lower pressure plate 9. The adjusting groove 12 is opened on the side wall of the base frame 1 corresponding to the position of the push rod 10. The fixed guide rod 13 is fixedly installed on the inner side of the adjusting groove 12, with the top and bottom ends of the fixed guide rod 13 respectively installed at the upper and lower ends of the adjusting groove 12. The movable sleeve 14 is movably fitted onto the fixed guide rod 13, and the movable sleeve 14 and the push rod 10 are fixedly connected to each other.

[0032] In this embodiment, the top of the push rod 10 is pressed, causing the push rod 10 to drive the lower pressure plate 9 to press downward, thereby allowing the limiting cone 11 to be inserted deeper into the ground, thus effectively limiting the base frame 1.

[0033] Furthermore, a base plate 7 is fixedly installed on the side wall of the base frame 1 corresponding to the bottom of the pressure plate 9, and an auxiliary hole 8 is opened on the side wall of the base plate 7 corresponding to the position of the limiting cone 11.

[0034] In this embodiment, the base plate 7 and auxiliary holes 8 provide auxiliary guidance and protection for the lower pressure plate 9 and the limiting cone 11. Simultaneously, as the limiting cone 11 descends, the soil, obstructed by the base plate 7, is forced upwards through the auxiliary holes 8, filling the area between the base plate 7 and the lower pressure plate 9, as well as the interior of the auxiliary holes 8. This filling of the soil fills the gaps created by the insertion of the limiting cone 11, making the contact between the base frame 1 and the ground tighter and enhancing the stability of the entire device. Furthermore, the filled soil also acts as a buffer and reinforcement, further improving the device's resistance to shaking and displacement. Under the pressure of the base plate 7 and the soil compression adjustment via the auxiliary holes 8, the soil at the bottom of the base plate 7 becomes relatively compact, improving the limiting effect of the limiting cone 11 after insertion.

[0035] Example 2: like Figure 5 - Figure 6 As shown, based on Embodiment 1, a foundation pile testing and fixing device includes a limiting cone 11. A connecting sleeve 20 is fixedly installed on the top of the limiting cone 11. The connecting sleeve 20 is made of a deformable material and is annular. The top of the connecting sleeve 20 and the corresponding bottom wall of the lower pressure plate 9 are fixedly connected to each other. A movable groove 22 is opened in the middle of the top of the limiting cone 11. The movable groove 22 is a spherical groove. A movable ball 23 is provided inside the movable groove 22. The movable ball 23 is a spherical block. A connecting block 21 is fixedly installed on the top of the movable ball 23. The top of the connecting block 21 is fixedly installed on the corresponding bottom wall of the lower pressure plate 9.

[0036] In this embodiment, the movable groove 22 and the movable ball 23 allow the limiting cone 11 to adjust to different angles when it is pressed downwards. The main factors affecting the adjustment angle are the placement of the equipment and the strength of the soil at the corresponding position. When the limiting cone 11 moves downwards, the multiple sets of limiting cones 11 on the lower pressure plate 9 tilt at different angles due to external factors and insert into the soil, thereby effectively limiting one side of the base frame 1. Combined with the multiple orientations of the base frame 1, this improves the limiting effect on the base frame 1.

[0037] Working principle and usage process of this utility model: In use, the device is hoisted to the designated position using a crane, aligning the foundation pile and guide rail 2. The relevant testing devices are installed on the foundation pile, and a buffer plate is placed on top of the foundation pile. After the relevant personnel move to a safe position, the hammer 3 is lifted to the designated position using a sling and then released, allowing the hammer 3 to fall freely inside the guide rail 2. This causes the hammer 3 to impact the top of the foundation pile, and the sensor feeds back data to determine the foundation pile's pass / fail status. Simultaneously, as the hammer 3 falls and impacts, the force is transmitted, causing the guide rail 2 to shake. The top of the guide rail 2 transmits the shaking force to the diagonal bracing assembly, which in turn transmits it to the limiting assembly via the diagonal bracing rod 4. This causes the limiting cone 11 on the limiting assembly to insert into the soil around the base frame 1, thereby limiting the base frame 1 and preventing it from shifting due to frequent shaking of the guide rail 2.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A foundation pile testing and fixing device, comprising a base frame (1), wherein a guide rail frame (2) is fixedly installed on the top of the base frame (1), and a hammer block (3) is provided inside the guide rail frame (2), characterized in that: The guide rail frame (2) is provided with a diagonal brace assembly, and the base frame (1) is provided with a limiting assembly. The diagonal brace assembly and the limiting assembly correspond to each other. One end of the diagonal brace assembly is installed at the top of the side wall of the guide rail frame (2), and the other end of the diagonal brace assembly is movably installed at the top of the side wall of the base frame (1).

2. The foundation pile testing and fixing device according to claim 1, characterized in that: The diagonal bracing assembly includes a diagonal bracing rod (4), a limiting plate (5), a moving groove (6), and a fixing rod (16). The limiting plate (5) is fixedly installed on both sides of the top middle position of the side wall of the base frame (1). The fixing rod (16) is fixedly installed between the two sets of limiting plates (5). The diagonal bracing rod (4) is inclinedly set on the side wall of the guide rail frame (2). One end of the diagonal bracing rod (4) is installed on the side wall of the guide rail frame (2), and the other end extends to the corresponding position between the two sets of limiting plates (5). The moving groove (6) is opened on the side wall of the diagonal bracing rod (4) at the position corresponding to the two sets of limiting plates (5). The diagonal bracing rod (4) is movably installed on the fixing rod (16) through the moving groove (6).

3. The foundation pile testing and fixing device according to claim 2, characterized in that: An auxiliary adjustment groove (15) is provided on the inner side of the moving groove (6). The top and bottom of the auxiliary adjustment groove (15) are both arc-shaped. An auxiliary ball (17) is fixedly installed in the middle of the fixed rod (16) corresponding to the position of the auxiliary adjustment groove (15). The auxiliary ball (17) is a spherical block. The outer diameter of the auxiliary ball (17) is matched with the inner diameter of the auxiliary adjustment groove (15).

4. The foundation pile testing and fixing device according to claim 3, characterized in that: The guide rail frame (2) has an adjusting ball (18) fixedly installed at one end of the diagonal brace (4). The diagonal brace (4) has a universal groove (19) at the position of the adjusting ball (18), and the adjusting ball (18) is located in the universal groove (19).

5. The foundation pile testing and fixing device according to claim 1, characterized in that: The limiting assembly includes a lower pressure plate (9), a push rod (10), a limiting cone (11), an adjusting groove (12), a fixed guide rod (13), and a movable sleeve (14). The push rod (10) is an "L"-shaped plate, with the top of the push rod (10) corresponding to the bottom of the inclined support assembly. The lower pressure plate (9) is fixedly installed at the bottom of the push rod (10), and the limiting cone (11) is fixedly installed at intervals at the bottom of the lower pressure plate (9). The adjusting groove (12) is opened on the side wall of the base frame (1) corresponding to the position of the push rod (10). The fixed guide rod (13) is fixedly installed on the inner side of the adjusting groove (12), with the top and bottom ends of the fixed guide rod (13) respectively installed at the upper and lower ends of the adjusting groove (12). The movable sleeve (14) is movably fitted onto the fixed guide rod (13), and the movable sleeve (14) and the push rod (10) are fixedly connected to each other.

6. The foundation pile testing and fixing device according to claim 5, characterized in that: The base frame (1) has a bottom plate (7) fixedly installed on the side wall corresponding to the bottom of the pressure plate (9), and the bottom plate (7) has an auxiliary hole (8) on the side wall corresponding to the position of the limiting cone (11).

7. A foundation pile testing and fixing device according to claim 5 or 6, characterized in that: A connecting sleeve (20) is fixedly installed on the top of the limiting cone (11). The top of the connecting sleeve (20) and the bottom wall of the lower pressure plate (9) are fixedly connected to each other. A movable groove (22) is opened in the middle of the top of the limiting cone (11). The movable groove (22) is a spherical groove. A movable ball (23) is set inside the movable groove (22). The movable ball (23) is a spherical block. A connecting block (21) is fixedly installed on the top of the movable ball (23). The top of the connecting block (21) is fixedly installed on the bottom wall of the lower pressure plate (9).

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