Pile foundation dynamic tester

Abstract

The utility model belongs to the technical field of pile foundation dynamic testing equipment, and particularly relates to a pile foundation dynamic testing instrument which comprises a box body, a dynamic testing instrument, a knocking hammer assembly and a supporting frame, the dynamic testing instrument, the knocking hammer assembly and the supporting frame are placed in the box body, a balance weight is arranged in the lower half portion of the box body, and a mounting hole is formed in the bottom of the box body and used for mounting the supporting frame. The knocking hammer assembly is detachably connected to the top of the supporting frame, the supporting frame can stretch out and draw back to adjust the height, the knocking hammer assembly is installed through the supporting frame, it can be ensured that the knocking force of the knocking hammer assembly is basically the same every time, and the detection error is reduced; according to the pile foundation dynamic tester, the influence of the external environment on use or detection results is avoided, the dynamic tester is provided with a wireless sensor so as to reduce the complexity of wire arrangement, and the pile foundation dynamic tester can ensure that the knocking hammer assembly keeps uniform striking force and ensure the detection precision of the dynamic tester.

Description

Technical Field

[0001] This utility model relates to the technical field of dynamic testing equipment for pile foundations, specifically a dynamic testing instrument for pile foundations. Background Technology

[0002] Currently, dynamic pile foundation testing instruments are widely used in engineering testing, but their design and functions still have some limitations, affecting testing efficiency and accuracy. Specific problems mainly manifest in the following aspects:

[0003] Existing pile foundation dynamic testing instruments are usually equipped with wired sensors, which need to be connected to the main unit via cables during testing. This design has obvious shortcomings in actual operation: it is cumbersome to move and store. After the test is completed, the cables need to be sorted and stored. Especially in complex construction site environments, the cables are prone to tangling and damage, which increases the difficulty of operation and time costs. There are also connection stability issues: cable connectors are prone to poor contact due to wear or oxidation during long-term use, which affects the stability of signal transmission and reduces the reliability of test results.

[0004] During the testing process, it is usually necessary to manually vibrate the pile foundation with a hand-held hammer. This method has the following problems: Inconsistent striking force: Different operators may strike with different forces, and even the same operator may not be able to maintain consistency in force during multiple strikes. This instability will cause fluctuations in the stress wave signal, affecting the accuracy of the test data; Human error is difficult to avoid: Manual operation is easily affected by factors such as the operator's experience and fatigue level, further increasing the error of the test results.

[0005] In practical use, pile foundation dynamic testing instruments often face complex environmental conditions. When used in harsh environments, the failure rate of the equipment increases significantly, affecting the continuity and efficiency of the testing work.

[0006] To address the aforementioned issues, designing a novel dynamic pile foundation testing instrument is of significant practical importance. Utility Model Content

[0007] Based on this, this solution provides a pile foundation dynamic testing instrument, which is designed with a controllable hammer and support structure to ensure the impact force of each strike, thereby ensuring the testing accuracy. Furthermore, the dynamic testing instrument can be used in harsher environments.

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0009] A pile foundation dynamic testing instrument includes: a housing and a dynamic testing instrument, a hammer assembly, and a support frame placed inside the housing. The lower half of the housing has a built-in counterweight, and the bottom outer side of the housing has mounting holes for mounting the support frame. The hammer assembly is detachably connected to the top of the support frame, and the support frame is telescopic to adjust its height. By mounting the hammer assembly through the support frame, it can be ensured that the striking force of the hammer assembly is basically the same each time, reducing detection errors. The dynamic testing instrument includes a housing, an energy storage battery, a circuit board, a display screen, and a seismic frame. The circuit board and the energy storage battery are mounted on the seismic frame, and the circuit board, the energy storage battery, and the display screen are electrically connected to prevent the dynamic testing instrument from being affected by the external environment in terms of use or test results.

[0010] Optionally, in one embodiment of the present invention, the support frame includes a support rod and a plurality of legs, the legs being movably connected to the lower end of the support rod structure, and the upper end of the support rod being provided with mounting studs for mounting the hammer assembly.

[0011] Optionally, in one embodiment of the present invention, the hammer assembly includes a hammer body, a connecting rod, and a mounting part. The hammer body is mounted on one end of the connecting rod, the connecting rod is screwed to the mounting part, and the bottom of the mounting part is provided with a screw hole for matching mounting studs.

[0012] Optionally, in one embodiment of the present invention, a horizontally oriented elastic locking block is provided on the outer side of the mounting hole.

[0013] Optionally, in one embodiment of the present invention, the lower end of the support leg is provided with a snap-fit ​​structure, which can be used for quick installation of the support frame.

[0014] Optionally, in one embodiment of the present invention, the seismic frame includes an internal mounting frame and a buffer outer skin, the buffer outer skin being attached to the outside of the housing, and the mounting frame being installed inside the housing.

[0015] Optionally, in one embodiment of the present invention, the motion measuring instrument is equipped with a wireless sensor to reduce the hassle of cable management.

[0016] Optionally, in one embodiment of the present invention, a protective layer is provided inside the housing to reduce the influence of the external environment on the dynamic measuring instrument.

[0017] Optionally, in one embodiment of the present invention, a protective glass is provided on the outer side of the housing at the display screen location, and a sealing gasket is provided between the protective glass and the housing.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a pile foundation dynamic testing instrument. The housing is structurally designed to store the instrument and also function as a counterweight base. A support frame can be quickly installed into the mounting holes at the bottom of the housing, and a striking hammer assembly can be installed on the top of the support frame. The height of the support frame can be adjusted to suit different usage scenarios. The structural design of the striking hammer assembly ensures that the striking force of each strike is basically the same, reducing the detection error of the dynamic testing instrument and improving detection accuracy. All components can be stored inside the housing for convenient storage and carrying. The dynamic testing instrument itself has an internal shock-resistant frame and a protective layer on the shell, which can withstand harsher temperature and humidity environments and is not easily damaged by drops, ensuring smooth testing. The configured sensor adopts a wireless sensor design, which reduces the hassle of cable management and makes it more convenient to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the support frame, hammer assembly, and housing in use according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the storage of each component in the box according to Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the dynamic measuring instrument according to Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the hammer assembly structure in Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the mounting hole structure in Embodiment 1 of this utility model;

[0026] Reference numerals: 1. Box body; 101. Counterweight; 102. Mounting hole; 2. Support frame; 201. Support leg; 202. Expansion joint; 203. Elastic buckle; 3. Hammer assembly; 301. Hammer body; 302. Connecting rod; 303. Mounting part; 304. Elastic stop; 305. Slider; 306. Connecting rope; 4. Wireless sensor; 5. Pile foundation A; 5. Dynamic measuring instrument; 5. Housing; 501. Buffer outer skin; 502. Mounting frame; 6. Mounting stud; 601. Connecting rod; 604. Circuit board; 7. Energy storage battery; 8. Protective glass; 9. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0028] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] Example 1

[0030] Because existing dynamic testing instruments generally rely on manual hammering, it is impossible to control the force of each hammer blow, resulting in significant errors in testing accuracy. Furthermore, the testing requires two people to work together, leading to relatively low testing efficiency. Therefore, a new dynamic testing instrument for pile foundations was designed, with the specific scheme as follows:

[0031] like Figure 1-4 As shown, a pile foundation dynamic testing instrument includes: a housing 1 and a dynamic testing instrument 5, a hammer assembly 3, and a support frame 2 placed inside the housing 1. The lower half of the housing 1 has a built-in counterweight 101, and the bottom outer side of the housing 1 has a mounting hole 102 for mounting the support frame 2. The hammer assembly 3 is detachably connected to the top of the support frame 2, and the support frame 2 can be extended and retracted to adjust the height. By mounting the hammer assembly 3 through the support frame 2, it can be ensured that the striking force of the hammer assembly 3 is basically the same each time, reducing detection errors. The dynamic testing instrument 5 includes a housing 501, an energy storage battery 8, a circuit board 7, a display screen, and a seismic frame. The circuit board 7 and the energy storage battery 8 are installed on the seismic frame, and the circuit board 7, the energy storage battery 8, and the display screen are electrically connected to prevent the dynamic testing instrument 5 from being affected by the external environment in terms of use or test results.

[0032] like Figure 1-3 As shown, in this embodiment, the basic structure of the box 1 can refer to the conventional box 1 structure. The difference is that the bottom of the box 1 has a mounting hole 102 for fixing the support frame 2. The box 1 has a placement slot for matching each component inside to ensure that each component is stably placed inside the box 1. The bottom of the box 1 has a counterweight 101, which can maintain the stability of the use and prevent the structure from tipping over.

[0033] like Figure 1-2 As shown, the support frame 2 includes a support rod and multiple legs 201. The legs 201 are movably connected to the lower end of the support rod structure. The upper end of the support rod is provided with a mounting stud 601 for installing the hammer assembly 3. In this embodiment, the support frame 2 includes four legs 201, which can ensure the stability of the support frame 2. A telescopic joint 202 is provided inside the support rod. When the telescopic joint 202 extends, the height of the top of the support rod can be controlled within a certain range. An elastic buckle 203 is provided on the outer side of the top of the main body of the support rod. The outer side of the telescopic joint 202 corresponding to the elastic buckle 203 is provided with a serrated pattern, which can quickly perform telescopic fixing operations and improve operating efficiency.

[0034] like Figure 1 , 4 As shown, the hammer assembly 3 includes a hammer body 301, a connecting rod 302, and a mounting part 303. The hammer body 301 is suspended from one end of the connecting rod 302, and the connecting rod 302 is screwed to the mounting part 303. The bottom of the mounting part 303 has a screw hole for matching the mounting stud 601. In this embodiment, the hammer body 301 is a plastic hammer body 301. The hammer body 301 is fixedly installed on the front end of the connecting rod 302. The connecting rod 302 and the mounting part 303 are detachably connected. The top of the mounting part 303 is provided with an elastic stop 304, and the rear of the connecting rod 302 is provided with a slider 305. The slider 305 and the elastic stop 304 are connected. In this configuration, the slider 305 and the hammer 301 are connected by a connecting rope 306. The slider 305 is suspended at the front end of the connecting rod 302. The operator can control the distance between the slider 305 and the elastic stop 304 to adjust the striking force of the hammer 301. After the hammer 301 strikes, it can move upward a short distance due to the action of the elastic stop 304, allowing the hammer 301 to quickly leave the striking point, simulating manual striking action and preventing repeated striking of the pile foundation A. The rear of the connecting rod 302 is equipped with scale lines to facilitate the operator in quickly determining the sliding distance of the slider 305 and controlling the striking force of the hammer 301.

[0035] like Figure 1 , 5As shown, a horizontal elastic block is provided on the outer side of the mounting hole 102. A spring is connected to the rear of the elastic block, and the spring is installed inside the housing 501. The front end of the elastic block is a bevel. The shape of the mounting hole 102 is a contour structure that matches the lower end of the support leg 201. After the support leg 201 is inserted, it can fit against the inner surface of the mounting hole 102. The lower end of the support leg 201 is provided with a snap-fit ​​structure, which can be used for quick installation of the support frame 2. When the user presses the bevel or the bevel receives a downward force, it will retract backward. When the support leg 201 is inserted downward... When mounting hole 102 is reached, the snap-fit ​​structure of the support leg 201 contacts the inclined surface, and the elastic block retracts, allowing the support leg 201 to continue to be inserted downwards. When the height of the snap-fit ​​structure is lower than the height of the elastic block, the elastic block will return to its original position and snap into the top of the snap-fit ​​structure, thus fixing the current support leg 201. When removing the support leg 201, press the elastic block and then remove the support leg 201. In addition, the bottom of the support leg 201 is flat, so when multiple support legs 201 are opened, they can be placed stably on the ground.

[0036] like Figure 3 As shown, the seismic frame includes an internal mounting frame 6 and a buffer outer skin 502. The buffer outer skin 502 is attached to the outside of the housing 501, and the mounting frame 6 is installed inside the housing 501. In this embodiment, the mounting frame 6 is provided with an outwardly extending connecting rod 604. The front end of the connecting rod 604 is provided with a screw hole, which can be used to fix it to the housing 501. The part where the connecting rod 302 connects to the housing 501 is also provided with a buffer rubber ring. When the housing 501 is impacted, the mounting frame 6 can further buffer the impact. The circuit board 7 is installed inside the mounting frame 6. The mounting frame 6 is provided with mounting studs 601 for mounting the circuit board 7. When the dynamic tester 5 is dropped, the circuit board 7 can be prevented from being directly impacted.

[0037] like Figure 1 , 2 As shown, the dynamic testing instrument 5 is equipped with a wireless sensor 4 to reduce the hassle of cable management. During testing, the wireless sensor 4 is placed at the testing position of pile foundation A, and the dynamic testing instrument 5 is connected to the wireless sensor 4 for communication. The dynamic testing instrument 5 is equipped with an extendable antenna to maintain the communication connection. The wireless sensor 4 has a built-in rechargeable battery and charging interface, which can be used for cyclic charging.

[0038] The housing 501 has a protective layer inside to reduce the impact of the external environment on the dynamic measuring instrument 5. The housing 501 is mainly made of engineering plastics. In this embodiment, the protective layer includes a silicone foam layer for temperature isolation and buffering. The inner side is also provided with waterproof structural adhesive to seal the seams. The screw mounting positions on the housing 501 are provided with sealing rings for waterproofing.

[0039] like Figure 2As shown, a protective glass 9 is provided on the outside of the housing 501 at the display screen location. A sealing gasket is provided between the protective glass 9 and the housing 501. In this embodiment, the protective glass 9 is tempered glass, which is used to protect the display screen from shattering when the dynamic tester 5 is dropped. The sealing gasket is used to waterproof the front side of the display screen and prevent internal short circuits.

[0040] Instructions for use:

[0041] First, remove all components from the housing 1, then flip the housing 1 over and lay it flat. Open the support legs 201 of the support frame 2 and insert them into the mounting holes 102 on the back of the housing 1. Then adjust the telescopic joint 202 of the support frame 2 to a suitable high position. Next, install the hammer assembly 3 on the top of the telescopic joint 202. Install the wireless sensor 4 on the pile foundation A to be tested and establish a communication connection with the dynamic testing instrument 5. Adjust the hammer assembly 3 to a suitable striking force, and the test can begin. The hammer body 301 strikes the pile foundation A. The wireless sensor 4 receives the data and sends it back to the dynamic testing instrument 5. After receiving and processing the data, the dynamic testing instrument 5 displays it on the screen for easy viewing by the operator.

[0042] The pile foundation A dynamic testing instrument 5 in this solution has a housing 1 designed for storage and also functioning as a counterweight base. The support frame 2 can be quickly installed into the mounting hole 102 at the bottom of the housing 1, and the top of the support frame 2 can be fitted with a striking hammer assembly 3. The support frame 2 can be adjusted to the required height to adapt to different usage scenarios. The structural design of the striking hammer assembly 3 ensures that the striking force of the striking hammer assembly 3 remains basically the same each time, reducing the detection error of the dynamic testing instrument 5 and improving the detection accuracy. All components can be stored inside the housing 1, making storage and carrying convenient. The dynamic testing instrument 5 itself has an internal anti-vibration frame and a protective layer on the shell 501, which can adapt to harsher temperature and humidity environments and has strong impact resistance, ensuring smooth testing. The configured sensor adopts a wireless sensor design 4, which reduces the hassle of cable management and makes it more convenient to use.

[0043] Example 2

[0044] In this embodiment, the structure of the pile foundation A dynamic testing instrument 5 is basically the same as that in embodiment 1. The difference is that the hammer assembly 3 is an electric structural component. The structure specifically includes a sleeve, a hammer block, a spring, a connecting cable, and a drive motor. The connecting cable passes through the sleeve and is connected to the hammer block and the drive motor at both ends, respectively. The spring is fixedly installed inside the sleeve. The hammer block matches the inner diameter of the sleeve. The forward and reverse rotation of the drive motor can rewind or release the connecting cable, thereby driving the hammer block to rise or fall. After the rotation parameters of the drive motor are preset, the striking force of the hammer block can be controlled to ensure that the striking force of the hammer assembly 3 is consistent, which helps to improve the detection accuracy of the dynamic testing instrument 5.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A dynamic pile foundation testing instrument, characterized in that, include: The enclosure contains a dynamic testing instrument, a striking hammer assembly, and a support frame. The lower half of the enclosure has a built-in counterweight, and mounting holes are provided on the outer bottom of the enclosure for mounting the support frame. The striking hammer assembly is detachably connected to the top of the support frame, which is telescopic to adjust its height. Mounting the striking hammer assembly via the support frame ensures that the striking force of each strike is essentially the same, reducing detection errors. The dynamic testing instrument includes a housing, a storage battery, a circuit board, a display screen, and a shock-resistant frame. The circuit board and storage battery are mounted on the shock-resistant frame, and the circuit board, storage battery, and display screen are electrically connected to prevent the dynamic testing instrument from being affected by the external environment, thus affecting its operation and test results.

2. The pile foundation dynamic testing instrument according to claim 1, characterized in that: The support frame includes a support rod and multiple legs. The legs are movably connected to the lower end of the support rod structure. The upper end of the support rod is provided with mounting studs for mounting the hammer assembly.

3. The pile foundation dynamic testing instrument according to claim 1, characterized in that: The hammer assembly includes a hammer body, a connecting rod, and a mounting part. The hammer body is mounted on one end of the connecting rod, the connecting rod is screwed to the mounting part, and the bottom of the mounting part has a screw hole for matching mounting studs.

4. The pile foundation dynamic testing instrument according to claim 1, characterized in that: A horizontally oriented elastic locking block is provided on the outside of the mounting hole.

5. A pile foundation dynamic testing instrument according to claim 2, characterized in that: The lower end of the support leg is provided with a snap-fit ​​structure, which can be used for quick installation of the support frame.

6. A pile foundation dynamic testing instrument according to claim 1, characterized in that: The seismic-resistant frame includes an internal mounting frame and a buffer outer skin. The buffer outer skin is attached to the outside of the shell, and the mounting frame is installed inside the shell.

7. A pile foundation dynamic testing instrument according to claim 1, characterized in that: The dynamic testing instrument is equipped with wireless sensors to reduce the hassle of cable management.

8. A pile foundation dynamic testing instrument according to claim 1, characterized in that: The housing is equipped with a protective layer to reduce the impact of the external environment on the dynamic measuring instrument.

9. A pile foundation dynamic testing instrument according to claim 1, characterized in that: A protective glass is provided on the outside of the housing at the display screen location, and a sealing gasket is provided between the protective glass and the housing.

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