Bridge pile integrity ultrasonic detection signal enhancement probe

Abstract

This invention provides an ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations, belonging to the field of pile foundation testing technology. It addresses the problem that existing ultrasonic signal enhancement probes are susceptible to friction, collision, and wear from impurities during testing inside the acoustic logging tube, leading to signal misinterpretation and module damage. The probe includes a signal enhancement probe, miniature push rods, a protective frame, protective blocks, a protective component, and a shielding component. Two sets of miniature push rods are fixedly installed on the left and right sides of the signal enhancement probe. The protective frame is vertically slidably connected to the outside of the signal enhancement probe and is fixedly installed at the bottom of the two sets of miniature push rods. Two sets of protective blocks are arranged opposite each other at the bottom of the signal enhancement probe. The protective component is located on the outside of the signal enhancement probe. The shielding component is located at the bottom of the signal enhancement probe. This invention offers advantages such as safety protection, reduced wear, and ease of use.

Description

Technical Field

[0001] This utility model belongs to the field of pile foundation testing technology, and more specifically, it relates to an ultrasonic signal enhancement probe for testing the integrity of road and bridge pile foundations. Background Technology

[0002] In road and bridge construction, pile foundations are crucial foundation structures, and their integrity directly affects the safety and stability of the entire project. Ultrasonic testing is a commonly used method for inspecting pile foundation integrity, requiring an ultrasonic signal enhancement probe. Existing ultrasonic signal enhancement probes typically integrate a probe body, a signal transmission and reception module, and a signal enhancement module. The signal transmission and reception module, based on the piezoelectric effect, uses a transmitting unit to drive a piezoelectric crystal to emit high-frequency ultrasonic waves. After propagating through the pile foundation concrete, the receiving unit converts the echo signal carrying information about the pile structure into an electrical signal. The signal enhancement module is usually integrated at the front end of the probe body, incorporating precision processing circuitry. Through multi-stage amplification, bandpass filtering, and impedance matching techniques, it effectively suppresses noise interference and enhances the useful signal, providing high-quality data support for subsequent defect analysis.

[0003] The existing application number CN202322629421.8 relates to the field of ultrasonic testing probe technology, specifically an ultrasonic testing probe for grouting pipes used in pile foundations. It includes a testing mechanism, a locking mechanism, and an auxiliary mechanism. The locking mechanism is fixedly mounted on the testing mechanism, and the auxiliary mechanism is fixedly mounted at the end of the testing mechanism. The testing mechanism includes a testing body, a testing cover, a glass cover, a panel, a transmitter, a receiver, a camera, a lighting column, and a lamp head. The testing cover is fixedly mounted at one end of the testing body. This ultrasonic testing probe for grouting pipes used in pile foundations emits ultrasonic waves through the transmitter mounted on the panel. When the signal encounters an obstacle and returns, the receiver receives the signal, completing obstacle detection. Simultaneously, the lamp head mounted on the lighting column illuminates the area, allowing the camera to observe the bottom of the pile foundation. These operations demonstrate the multi-functionality of this device, further improving work efficiency during construction.

[0004] Based on the above, existing ultrasonic signal enhancement probes, when used for integrity testing through pre-embedded acoustic logging tubes in pile foundations, are prone to friction and collision between the inner wall of the tube and the probe during lifting or lowering. This not only alters the direction of ultrasonic wave propagation, causing abnormal fluctuations in the received signal that are misinterpreted as defects, but may also damage the pre-amplification module. Furthermore, the water used as a coupling agent inside the acoustic logging tube often contains impurities; as the probe descends, these impurities can cause wear to the front-end signal transmitter and receiver, affecting the probe's lifespan and detection accuracy. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides an ultrasonic signal enhancement probe for bridge pile foundation integrity testing. This solves the problem of existing ultrasonic signal enhancement probes where, during integrity testing via a pre-embedded acoustic logging tube in the pile foundation, the inner wall of the tube easily rubs and collides with the probe during lifting or lowering. This not only alters the ultrasonic wave propagation direction, causing abnormal fluctuations in the received signal that are misinterpreted as defects, but may also damage the pre-amplification module. Furthermore, the water used as a coupling agent inside the acoustic logging tube often contains impurities; these impurities can cause wear to the front-end signal transmitter and receiver during probe descent, affecting the probe's lifespan and detection accuracy.

[0006] The purpose and effectiveness of this utility model's ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations are achieved through the following specific technical means: An ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations includes a signal enhancement probe, miniature push rods, a transmitter and receiver, a protective frame, protective blocks, a protective component, and a shielding component. Two sets of miniature push rods are fixedly installed on the left and right sides of the signal enhancement probe. The transmitter and receiver are fixedly installed at the bottom of the signal enhancement probe. The protective frame is vertically slidably connected to the outside of the signal enhancement probe and is fixedly installed at the bottom of the two sets of miniature push rods. Two sets of protective blocks are arranged opposite each other at the bottom of the signal enhancement probe. The protective component is located on the outside of the signal enhancement probe. The shielding component is located at the bottom of the signal enhancement probe.

[0007] Furthermore, the protective component includes: heat dissipation grooves, wherein multiple sets of heat dissipation grooves are arranged in a circumferential array on the outside of the protective frame.

[0008] Furthermore, the protective component also includes: a support frame and anti-collision balls. Multiple sets of support frames are arranged in a circumferential array on the outer side of the bottom of the protective frame. Multiple sets of anti-collision balls are arranged, and the multiple sets of anti-collision balls are rotatably connected to the inside of the multiple sets of support frames.

[0009] Furthermore, the shielding component includes: a mounting block and a guide rail. The mounting block is provided in two sets, and the two sets of mounting blocks are fixedly installed on the bottom surface of the signal enhancement probe. The guide rail is provided in two sets, and the two sets of guide rails are fixedly installed on the bottom surface of the signal enhancement probe.

[0010] Furthermore, the shielding assembly also includes a drive rack, wherein two sets of drive racks are provided, and the two sets of drive racks are fixedly installed on both sides inside the protective frame.

[0011] Furthermore, the shielding assembly also includes: threaded rods and drive gears. The threaded rods are provided in two sets, and the two sets of threaded rods are rotatably connected inside the two sets of mounting blocks respectively. The drive gears are provided in two sets, and the two sets of drive gears are fixedly installed at one end of the two sets of threaded rods respectively. The drive gears and drive racks mesh with each other.

[0012] Furthermore, the shielding assembly also includes: a transmission block and a protective groove. The transmission block is provided in two sets, and the two sets of transmission blocks are slidably connected inside the two sets of guide rails. The two sets of transmission blocks are respectively threaded to one end of the two sets of threaded rods. The protective groove is provided in two sets, and the two sets of protective grooves are respectively opened inside the two sets of protective blocks.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Firstly, this invention features a protective component. Through the coordinated design of the protective frame and the anti-collision ball, it effectively solves the problem of the probe being easily damaged by collisions when moving up and down inside the acoustic tube. In the non-operating state, the protective frame descends to form a physical barrier, protecting not only the signal enhancement module at the lower end of the probe but also resisting impacts from lateral debris. During testing, the protective frame moves upward to avoid interference with the normal operation of the transmitter and receiver. Simultaneously, the heat dissipation grooves on the outside of the protective frame ensure heat dissipation from the probe in the protected state, preventing performance degradation due to overheating. The anti-collision ball at the bottom buffers collisions with the tube wall during probe movement, and its rolling characteristics reduce resistance, ensuring a stable and efficient testing process.

[0014] Secondly, this invention features a shielding component that achieves dynamic protection for the transmitter and receiver through a linkage design of gear rack and pinion and lead screw transmission. When the protective frame moves, the drive rack rotates the drive gear, which in turn drives the lead screw to rotate, causing the transmission block to slide along the guide rail, thus shielding or exposing the transmitter and receiver. In the non-operating phase, the protective groove completely covers the transmitter and receiver, effectively resisting the erosion of impurities inside the acoustic tube; during testing, the protective groove quickly opens, ensuring unobstructed transmission and reception of ultrasonic signals. This dynamic protection mechanism significantly improves the probe's lifespan and detection accuracy.

[0015] This invention has advantages such as safety protection, reduced wear and tear, and ease of use. It solves the problems of existing probes being susceptible to collision and wear and signal interference, and improves the stability of the equipment through heat dissipation optimization and automatic protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the protective frame structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the transmitter and receiver structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the protective block structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the transmission block structure of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Signal enhancement probe; 101. Miniature push rod; 102. Mounting block; 103. Guide rail; 2. Transmitter and receiver; 3. Protective frame; 301. Heat dissipation groove; 302. Support frame; 303. Anti-collision ball; 304. Drive rack; 4. Protective block; 401. Threaded rod; 402. Drive gear; 403. Transmission block; 404. Protective groove. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example

[0023] As attached Figure 1 To be continued Figure 5 As shown: This utility model provides an ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations, including a signal enhancement probe 1, miniature push rods 101, a transmitter and receiver 2, a protective frame 3, protective blocks 4, and a protective assembly. Two sets of miniature push rods 101 are provided, and the two sets of miniature push rods 101 are fixedly installed on the left and right sides of the signal enhancement probe 1. The transmitter and receiver 2 is fixedly installed at the bottom of the signal enhancement probe 1. The protective frame 3 is vertically slidably connected to the outside of the signal enhancement probe 1, and the protective frame 3 is fixedly installed at the bottom of the two sets of miniature push rods 101. Two sets of protective blocks 4 are provided, and the two sets of protective blocks 4 are positioned opposite each other at the bottom of the signal enhancement probe 1. The protective assembly is located on the outside of the signal enhancement probe 1.

[0024] The protective components include: heat dissipation slots 301, which are provided in multiple sets, and the multiple sets of heat dissipation slots 301 are arranged in a circumferential array on the outside of the protective frame 3.

[0025] The protective components also include: support frame 302 and anti-collision ball 303. Multiple sets of support frame 302 are arranged in a circumferential array on the outer side of the bottom of the protective frame 3. Multiple sets of anti-collision ball 303 are arranged, and the multiple sets of anti-collision ball 303 are rotatably connected to the inside of the multiple sets of support frame 302.

[0026] The specific usage and function of this embodiment are as follows: When not in operation, the two sets of miniature push rods 101 extend synchronously, driving the protective frame 3 to move vertically downward along the outer wall of the signal enhancement probe 1. At this time, the protective frame 3 not only protects the signal enhancement module at the lower end of the signal enhancement probe 1, but its portion extending beyond the bottom of the signal enhancement probe 1 also provides physical protection for the transmitter and receiver 2, effectively resisting impacts from debris from the side.

[0027] During the testing phase, the miniature push rod 101 is energized and retracts, causing the protective frame 3 to move upward and reset, fully exposing the bottom of the probe and ensuring that the transmitter and receiver 2 can transmit and receive ultrasonic signals without obstruction.

[0028] The heat dissipation grooves 301 arranged in a circular array on the outer side of the protective frame 3 maintain a good air convection channel even when the probe is in the protected state, avoiding heat accumulation caused by the protective structure. In addition, the anti-collision ball 303 at the bottom of the protective frame 3 can buffer the impact of the tube wall during the raising and lowering of the signal enhancement probe 1 in the acoustic tube, and reduce the resistance to probe movement through the rolling characteristics of the anti-collision ball 303, thus achieving stable detection. Example

[0029] Based on Example 1, such as Figures 1 to 5 As shown, it also includes: a shielding component, which is disposed at the bottom of the signal enhancement probe 1.

[0030] The shielding component includes: mounting blocks 102 and guide rails 103. Two sets of mounting blocks 102 are provided, and the two sets of mounting blocks 102 are fixedly installed on the bottom surface of the signal enhancement probe 1. Two sets of guide rails 103 are provided, and the two sets of guide rails 103 are fixedly installed on the bottom surface of the signal enhancement probe 1.

[0031] The shielding assembly also includes a drive rack 304, which is provided in two sets. The two sets of drive racks 304 are fixedly installed on both sides inside the protective frame 3.

[0032] The shielding assembly also includes: threaded rods 401 and drive gears 402. Two sets of threaded rods 401 are provided, and the two sets of threaded rods 401 are rotatably connected inside the two sets of mounting blocks 102 respectively. Two sets of drive gears 402 are provided, and the two sets of drive gears 402 are fixedly installed at one end of the two sets of threaded rods 401 respectively. The drive gears 402 and drive racks 304 mesh with each other.

[0033] The shielding assembly also includes: a transmission block 403 and a protective groove 404. Two sets of transmission blocks 403 are provided, and the two sets of transmission blocks 403 are slidably connected inside the two sets of guide rails 103 respectively. The two sets of transmission blocks 403 are respectively threaded to one end of the two sets of threaded rods 401. Two sets of protective grooves 404 are provided, and the two sets of protective grooves 404 are respectively opened inside the two sets of protective blocks 4.

[0034] The specific usage and function of this embodiment are as follows: When the protective frame 3 is driven to make vertical displacement by the miniature push rod 101, the drive racks 304 on both sides of its inner wall move in sync and mesh with the drive gear 402. The rotational torque of the drive gear 402 is transmitted to the threaded rod 401 through a key connection, so that the threaded rod 401 rotates smoothly in the bearing seat of the mounting block 102.

[0035] As the threaded rod 401 rotates, the transmission block 403 moves linearly along the guide rail 103 via the threaded pair. The guiding function of the guide rail 103 ensures the displacement accuracy of the transmission block 403, and the protective block 4 fixed at its end moves synchronously, realizing dynamic shielding or exposure of the transmitter and receiver 2.

[0036] In the non-operating state, the protective frame 3 descends to its lowest position, and the drive rack 304 drives the drive gear 402 to rotate in the opposite direction, causing the two protective blocks 4 on both sides to move towards each other until the protective groove 404 completely covers the outside of the transmitter and receiver 2. This dual protection structure can effectively resist the erosion of impurities inside the acoustic tube and avoid mechanical damage to the probe during storage or lifting.

[0037] When entering the detection mode, the protective frame 3 rises and resets, the drive rack 304 drives the drive gear 402 to rotate in the forward direction, and the two protective blocks 4 on both sides move to the limit position in the opposite direction to ensure that the ultrasonic transmission and reception path of the transmitter and receiver 2 is completely unobstructed, so as to realize ultrasonic detection.

[0038] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0039] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0040] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A signal enhancement probe for ultrasonic testing of the integrity of road and bridge pile foundations, characterized in that: The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations includes a signal enhancement probe (1), a miniature push rod (101), a transmitter and receiver (2), a protective frame (3), a protective block (4), a protective component, and a shielding component. The miniature push rod (101) is provided in two sets, and the two sets of miniature push rods (101) are fixedly installed on the left and right sides of the signal enhancement probe (1). The transmitter and receiver (2) is fixedly installed at the bottom of the signal enhancement probe (1). The protective frame (3) is vertically slidably connected to the outside of the signal enhancement probe (1), and the protective frame (3) is fixedly installed at the bottom of the two sets of miniature push rods (101). The protective block (4) is provided in two sets, and the two sets of protective blocks (4) are arranged opposite each other at the bottom of the signal enhancement probe (1). The protective component is located on the outside of the signal enhancement probe (1). The shielding component is located at the bottom of the signal enhancement probe (1).

2. The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations as described in claim 1, characterized in that: The protective component includes: heat dissipation slots (301), which are provided in multiple sets, and the multiple sets of heat dissipation slots (301) are arranged in a circumferential array on the outside of the protective frame (3).

3. The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations as described in claim 2, characterized in that: The protective assembly also includes: a support frame (302) and anti-collision balls (303). The support frame (302) is provided in multiple sets, and the multiple sets of support frames (302) are arranged in a circumferential array on the outer side of the bottom of the protective frame (3). The anti-collision balls (303) are provided in multiple sets, and the multiple sets of anti-collision balls (303) are rotatably connected to the inside of the multiple sets of support frames (302).

4. The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations as described in claim 1, characterized in that: The shielding assembly includes: a mounting block (102) and a guide rail (103). The mounting block (102) is provided in two sets, and the two sets of mounting blocks (102) are fixedly installed on the bottom surface of the signal enhancement probe (1). The guide rail (103) is provided in two sets, and the two sets of guide rails (103) are fixedly installed on the bottom surface of the signal enhancement probe (1).

5. The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations as described in claim 4, characterized in that: The shielding assembly also includes a drive rack (304), which is provided in two sets, and the two sets of drive racks (304) are fixedly installed on both sides inside the protective frame (3).

6. The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations as described in claim 4, characterized in that: The shielding assembly further includes: a threaded rod (401) and a drive gear (402). The threaded rod (401) is provided in two sets, and the two sets of threaded rods (401) are rotatably connected inside the two sets of mounting blocks (102). The drive gear (402) is provided in two sets, and the two sets of drive gears (402) are fixedly installed at one end of the two sets of threaded rods (401). The drive gear (402) and the drive rack (304) mesh with each other.

7. The ultrasonic signal enhancement probe for detecting the integrity of road and bridge pile foundations as described in claim 4, characterized in that: The shielding assembly further includes: a transmission block (403) and a protective groove (404). The transmission block (403) is provided in two sets, and the two sets of transmission blocks (403) are slidably connected inside the two sets of guide rails (103). The two sets of transmission blocks (403) are respectively threaded to one end of the two sets of threaded rods (401). The protective groove (404) is provided in two sets, and the two sets of protective grooves (404) are respectively opened inside the two sets of protective blocks (4).

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