A pile detection auxiliary fixing device matched with a pile dynamic detector

Abstract

The utility model relates to the technical field of foundation pile detection auxiliary fixing device, specifically relates to a kind of foundation pile detection auxiliary fixing device of matching foundation pile dynamic tester, including center seat, multiple groups of support pole are arranged on center seat, mobile pole is arranged in the center of center seat, the bottom of mobile pole is provided with limit disc, the top of mobile pole is provided with support seat, and support seat is provided with absorption assembly;Absorption assembly is used to keep dynamic tester detection head stable when dynamic impact. Compared with prior art, the present application absorbs and disperses impact vibration energy when the foundation pile is dynamically tested, thereby ensuring that the dynamic tester detection head maintains a stable and balanced posture during the impact process, making the collected signal more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary fixing devices for pile testing, and in particular to an auxiliary fixing device for pile testing that is used in conjunction with a dynamic pile testing instrument. Background Technology

[0002] Dynamic pile testing is a commonly used method for pile foundation inspection. It involves applying impact vibration to the pile top and collecting the pile's response signals to analyze the pile's integrity and bearing capacity. During dynamic pile testing, the testing instrument is typically installed at the center of the pile top, using an accelerometer or velocity sensor to collect reflected wave signals. To ensure the accuracy of the test data, the testing instrument must maintain stable, perpendicular contact with the pile top surface and resist external vibrations and displacement interference during the testing process.

[0003] Existing pile dynamic testing instruments are generally fixed using simple brackets or manual handheld methods, which have poor stability and positioning accuracy. They are prone to tilting, eccentricity or loosening due to uneven ground, pile top tilting or external interference, thus affecting the accuracy of the test data. Therefore, this utility model proposes a pile testing auxiliary fixing device to match the pile dynamic testing instrument to meet the high-precision testing needs in complex construction environments. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose an auxiliary fixing device for pile testing, which is matched with a pile dynamic testing instrument, to solve the problem that the testing instrument is tilted, eccentric or loosened due to uneven ground, pile top tilt or external force interference, thereby affecting the accuracy of the testing data.

[0005] To achieve the above objectives, this utility model provides an auxiliary fixing device for pile testing, which is used in conjunction with a dynamic pile testing instrument. The device includes a central base, on which multiple sets of support rods are provided. A movable rod is provided through the center of the central base. A limiting plate is provided at the bottom of the movable rod, and a support seat is provided at the top of the movable rod. An absorption component is provided on the support seat. The absorption component is used to keep the testing head of the dynamic pile testing instrument stable during dynamic testing impacts.

[0006] Preferably, the absorption assembly includes a lower magnetic plate disposed on the top of the support base, a buffer cavity disposed on the top of the lower magnetic plate, a central rod passing through the lower magnetic plate, the central rod being slidably disposed at the axial position of the buffer cavity, an upper magnetic plate disposed on the top of the central rod, and the lower magnetic plate and the upper magnetic plate having the same pole facing each other.

[0007] Preferably, a rubber pad is provided on the top of the upper magnetic plate, and the rubber pad is in direct contact with the dynamic measuring instrument.

[0008] Preferably, one end of the support rod is provided with an adjustment plate, the adjustment plate is provided with a limit plate structure, and one end of the adjustment plate is provided with a contact head, which contacts the ground.

[0009] Preferably, the movable rod is provided with a movable ring, one end of which is in contact with the limiting plate, and the support rod is provided with a deflection rod, one end of which is disposed on the movable ring.

[0010] Preferably, the surface of the movable rod is provided with a threaded groove, and a rotating ring is slidably disposed on the central seat, the inner cavity of the rotating ring engaging with the threaded groove.

[0011] The beneficial effects of this utility model are: 1. Using the central base as the overall installation base, multiple sets of support rods provide stable support and positioning for the central base. Each support rod can be adjusted individually, enabling the device to maintain balance on different pile top surfaces. This achieves multi-point stable support for the device and can adapt to different terrains or uneven pile tops. The movable rod is set through the center of the central base and can slide and adjust in the vertical direction, realizing adjustable height of the detector and downward limit protection to prevent the device from slipping or tipping over, thus adapting to the installation requirements of piles or dynamic measuring instruments of different heights.

[0012] 2. When the dynamic testing instrument is subjected to the impact reaction force of the pile top during the testing process, the force is transmitted to the upper magnetic plate through the rubber pad. At this time, the magnetic repulsion between the upper and lower magnetic plates and the gas or elastic space in the buffer cavity jointly absorb the impact energy, causing the central rod to produce a small controllable displacement, reducing the instantaneous vibration of the dynamic testing instrument's detection head, so that the impact vibration generated during the dynamic testing process is absorbed and dispersed in a non-contact manner, avoiding the vibration transmission problem caused by the rigid mechanical connection.

[0013] 3. When the rotating ring rotates, the threaded transmission structure drives the moving rod to move up and down to adjust the height of the support base, thus adapting to the pile testing positions at different heights. An adjusting plate is installed at the lower end of the support rod, with a limiting plate structure on the adjusting plate to limit the deflection angle and support range of the support rod, preventing tilting or slippage during impact and ensuring the overall stability of the device. A contact head is installed at one end of the adjusting plate, directly contacting the ground to provide stable three-point or multi-point support for the device. The moving ring on the moving rod abuts against the limiting plate, forming a limiting protection for the downward movement of the moving rod. The deflection rod on the support rod is connected to the moving ring. When the moving ring moves slightly in the vertical direction, the deflection rod drives the support rod to make a small-angle synchronous adjustment, thus maintaining the overall structural balance during dynamic testing and ensuring uniform distribution of support force; achieving adaptive balance compensation. The overall design improves the device's seismic resistance and stability, facilitates rapid installation and high-precision testing of the dynamic testing instrument in complex environments, and has good practical value and innovation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the rotating ring of this utility model; Figure 3 This is a schematic diagram of the absorption component of this utility model.

[0016] The markings in the diagram are as follows: 1. Center seat; 2. Support rod; 3. Moving rod; 4. Limiting plate; 5. Contact head; 6. Adjusting plate; 7. Deflection rod; 8. Moving ring; 9. Threaded groove; 10. Rotating ring; 11. Support seat; 12. Lower magnetic plate; 13. Buffer cavity; 14. Center rod; 15. Upper magnetic plate; 16. Rubber pad. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figures 1-3As shown, a pile testing auxiliary fixing device for a matching pile dynamic testing instrument includes a central base 1, multiple sets of support rods 2 are provided on the central base 1, a movable rod 3 is provided through the center of the central base 1, a limit plate 4 is provided at the bottom of the movable rod 3, a support seat 11 is provided at the top of the movable rod 3, and an absorption component is provided on the support seat 11; the absorption component is used to keep the detection head of the dynamic testing instrument stable during dynamic testing impact. Using the central base 1 as the overall mounting base, multiple sets of support rods 2 provide stable support and positioning for the central base 1. Each support rod 2 can be adjusted individually, allowing the device to maintain balance on different pile top surfaces, achieving multi-point stable support for the device and adapting to different terrains or uneven pile tops. The movable rod 3 is installed through the center of the central base 1, and it can slide and adjust in the vertical direction, realizing adjustable height of the detector and downward movement limit protection to prevent the device from slipping or tipping over, thus adapting to the installation requirements of piles or dynamic testing instruments of different heights. The limiting plate 4 at the bottom of the movable rod 3 is used to limit the downward movement of the movable rod 3 to prevent excessive sliding and device instability. The support base 11 set at the top of the movable rod 3 serves as the mounting platform for the dynamic testing instrument. Through the absorption components on the support base 11, the impact vibration energy is absorbed and dispersed during pile dynamic testing, thereby ensuring that the detection head of the dynamic testing instrument maintains a stable and balanced posture during impact, making the acquired signal more accurate and reliable. The overall structure is simple, easy to adjust, and has good seismic resistance and reliability, making it suitable for various pile foundation field testing environments.

[0020] like Figures 1-3 As shown, the absorption assembly includes a lower magnetic plate 12 disposed on the top of the support base 11. A buffer cavity 13 is disposed on the top of the lower magnetic plate 12. The buffer cavity 13 is a composite cavity containing elastic material (such as silicone / spring / foam). A central rod 14 is passed through the lower magnetic plate 12 and is slidably disposed at the axial position of the buffer cavity 13. An upper magnetic plate 15 is disposed on the top of the central rod 14. The lower magnetic plate 12 and the upper magnetic plate 15 are opposite each other with the same pole. A rubber pad 16 is disposed on the top of the upper magnetic plate 15 and is in direct contact with the dynamic measuring instrument. The top of the central rod 14 is fixedly connected to the upper magnetic plate 15. The upper magnetic plate 15 and the lower magnetic plate 12 are aligned with each other and have the same pole facing each other, forming a repulsive magnetic levitation force field. When the dynamic measuring instrument is subjected to the impact reaction force of the pile top during the detection process, the force is transmitted to the upper magnetic plate 15 through the rubber pad 16. At this time, the magnetic repulsion between the upper and lower magnetic plates and the gas or elastic space in the buffer cavity 13 jointly absorb the impact energy, causing the central rod 14 to produce a small controllable displacement, reducing the instantaneous vibration of the dynamic measuring instrument's detection head, and enabling the impact vibration generated during the dynamic measurement process to be absorbed and dispersed non-contactly, avoiding the vibration transmission problem caused by the rigid mechanical connection. Combined with the elastic space of the buffer cavity 13, the energy absorption effect is further improved, and the response stability of the dynamic measuring instrument during the force process is improved. The rubber pad 16 is in direct contact with the dynamic measuring instrument, which can simultaneously play the roles of anti-slip, anti-scratching, and secondary shock absorption, protecting the structural safety of the dynamic measuring instrument. The overall device has a compact structure and sensitive response, which can effectively improve the accuracy of the pile dynamic measurement signal and the service life of the device, and has good engineering applicability and innovation.

[0021] like Figures 1-3 As shown, a threaded groove 9 is formed through the surface of the moving rod 3, and a rotating ring 10 is slidably arranged on the center seat 1, with the inner cavity of the rotating ring 10 meshing with the threaded groove 9; an adjusting plate 6 is provided at one end of the support rod 2, and a limit plate structure is provided on the adjusting plate 6; a contact head 5 is provided at one end of the adjusting plate 6, and the contact head 5 is in contact with the ground; a moving ring 8 is provided on the moving rod 3, and one end of the moving ring 8 is in contact with the limit plate 4; a deflection rod 7 is provided on the support rod 2, and one end of the deflection rod 7 is provided on the moving ring 8; When the rotating ring 10 rotates, the threaded transmission structure drives the moving rod 3 to move up and down to adjust the height of the support base 11, thereby adapting to the pile detection positions at different heights. An adjusting plate 6 is provided at the lower end of the support rod 2, and a limiting plate structure is provided on the adjusting plate 6 to limit the deflection angle and support range of the support rod 2, preventing tilting or slippage during impact and ensuring the overall stability of the device. A contact head 5 is provided at one end of the adjusting plate 6, which directly contacts the ground, providing stable three-point or multi-point support for the device. The moving ring 8 on the moving rod 3 abuts against the limiting plate 4, forming a limiting protection for the downward movement of the moving rod. The deflection rod 7 on the support rod 2 is connected to the moving ring 8. When the moving ring 8 moves slightly in the vertical direction, the deflection rod 7 drives the support rod 2 to make a small-angle synchronous adjustment, thereby maintaining the overall structural balance during dynamic testing and ensuring uniform distribution of support force; achieving adaptive balance compensation. The overall design improves the device's seismic resistance and stability, facilitates rapid installation and high-precision testing of the dynamic testing instrument in complex environments, and has good practical value and innovation.

[0022] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0023] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pile testing auxiliary fixing device for a matching pile dynamic testing instrument, comprising a central base (1), characterized in that, The central seat (1) is provided with multiple sets of support rods (2), and a moving rod (3) is provided through the center of the central seat (1). A limiting plate (4) is provided at the bottom of the moving rod (3), and a support seat (11) is provided at the top of the moving rod (3). An absorption component is provided on the support seat (11). The absorption component is used to keep the dynamic test instrument's detection head stable during dynamic impact testing.

2. The auxiliary fixing device for pile testing with a matching pile dynamic testing instrument according to claim 1, characterized in that, The absorption assembly includes a lower magnetic plate (12) disposed on the top of the support base (11), a buffer cavity (13) disposed on the top of the lower magnetic plate (12), a central rod (14) passing through the lower magnetic plate (12), the central rod (14) being slidably disposed at the axial position of the buffer cavity (13), an upper magnetic plate (15) disposed on the top of the central rod (14), and the lower magnetic plate (12) and the upper magnetic plate (15) being opposite each other with the same pole.

3. The auxiliary fixing device for pile testing with a matching pile dynamic testing instrument according to claim 2, characterized in that, A rubber pad (16) is provided on the top of the upper magnetic plate (15), and the rubber pad (16) is in direct contact with the dynamic measuring instrument.

4. The auxiliary fixing device for pile testing with a matching pile dynamic testing instrument according to claim 3, characterized in that, One end of the support rod (2) is provided with an adjustment plate (6), the adjustment plate (6) is provided with a limit plate structure, and one end of the adjustment plate (6) is provided with a contact head (5), the contact head (5) is in contact with the ground.

5. The auxiliary fixing device for pile testing with a matching pile dynamic testing instrument according to claim 4, characterized in that, The moving rod (3) is provided with a moving ring (8), one end of which is in contact with the limiting plate (4). The support rod (2) is provided with a deflection rod (7), one end of which is provided on the moving ring (8).

6. The auxiliary fixing device for pile testing with a matching pile dynamic testing instrument according to claim 1, characterized in that, The surface of the moving rod (3) is provided with a threaded groove (9), and a rotating ring (10) is slidably provided on the center seat (1). The inner cavity of the rotating ring (10) meshes with the threaded groove (9).

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