A pile foundation detection flaw detector

Abstract

This utility model discloses a flaw detector for pile foundation testing, including a housing with an inner shell on the bottom wall. A transmitting probe is installed at the left end of the inner shell, and a receiving probe is installed at the right end. A microcontroller is installed on the bottom wall of the inner shell. Both the transmitting and receiving probes are bidirectionally electrically connected to the microcontroller via wires. It also includes an auxiliary protection mechanism, comprising a strip seat, a sliding seat, a limiting rod, and protective components. The strip seat is movably sleeved on the outside of the wires. This flaw detector for pile foundation testing, through the protective components, can protect the probe from collision during its entry into the pile foundation's acoustic logging tube, reducing the probability of probe damage. Simultaneously, the device, through transmission and limiting elements, can vertically suspend and fix the probe entering the pile foundation's acoustic logging tube, reducing the probability of shaking and thus improving the accuracy of subsequent pile foundation flaw detection measurements.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation testing technology, specifically a flaw detector for pile foundation testing. Background Technology

[0002] Deep foundations (see figure) consisting of piles and pile caps (hereinafter referred to as pile caps) connecting the pile tops, or single pile foundations consisting of columns connected to the pile foundations, are widely used in high-rise buildings. During use, pile foundations require internal defect detection using a flaw detector. Some flaw detectors employ ultrasonic testing, with a display screen on the casing. A transmitting probe and a receiving probe are mounted on the casing via wires. During pile foundation flaw detection, workers hold the wires and place the transmitting and receiving probes into the pre-embedded sonic logging tubes in the pile foundation. An electrical pulse then excites the transmitting probe, converting the electrical pulse energy into mechanical vibration energy. The transmitting probe transmits this mechanical vibration energy into the concrete, and the receiving probe then converts the mechanical vibration energy back into electrical vibration energy. The device displays the propagation time and first wave amplitude on the wave screen using a receiver, thereby calculating the sound velocity and amplitude of the concrete. This facilitates the staff's assessment of the uniformity, defect location, and properties of the pile concrete. However, when the transmitting and receiving probes of the device are inserted into the sonic logging tube of the pile foundation, they are operated by hand. When the staff holds the probes into the sonic logging tube, the probes are prone to frequent shaking due to hand instability, causing them to collide with the inner wall of the sonic logging tube and potentially leading to damage. Furthermore, during the subsequent pile foundation flaw detection process, the shaking of the probes can interfere with the transmission of ultrasonic waves, which may lead to errors in the sound wave measurement and affect the pile foundation flaw detection results. Therefore, we propose a flaw detector for pile foundation testing. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a flaw detector for pile foundation testing. This device can protect the probe from collision during the process of entering the sonic logging tube of the pile foundation through protective components, reducing the probability of the flaw detector probe being damaged by collision. At the same time, the device can vertically suspend and fix the probe entering the sonic logging tube of the pile foundation through transmission elements and limiting elements, reducing the probability of it shaking, thereby improving the accuracy of subsequent flaw detection and measurement of the pile foundation, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flaw detector for pile foundation testing, comprising a housing, an inner shell provided on the bottom wall of the housing, a transmitting probe installed on the left end of the inner shell, a receiving probe installed on the right end of the inner shell, a microcontroller provided on the bottom wall of the inner shell, and both the transmitting probe and the receiving probe being bidirectionally electrically connected to the microcontroller via wires, and also including an auxiliary protection mechanism;

[0005] Auxiliary protection mechanism: It includes a strip seat, a sliding seat, a limiting rod, and protective components. The strip seats are movably sleeved on the outside of the wires. Each strip seat has a horizontally symmetrically distributed dovetail groove on its front side. The sliding seat is slidably connected inside the dovetail groove. Each sliding seat has a limiting rod on its front side. Protective components are provided on the outside of both the transmitting and receiving probes. This device can protect the probe from collision during its entry into the pile foundation sonic logging tube through the protective components, reducing the probability of the flaw detector probe being damaged by collision. At the same time, the device can vertically suspend and fix the probe entering the pile foundation sonic logging tube through transmission and limiting elements, reducing the probability of it shaking, thereby improving the accuracy of subsequent flaw detection measurements of the pile foundation.

[0006] Furthermore, a battery is provided on the bottom wall of the inner shell, and the input terminal of the battery is electrically connected to the input terminal of the microcontroller. A touch screen is provided on the upper side of the inner shell, and the touch screen is bidirectionally electrically connected to the microcontroller to provide power for the operation of the pile foundation inspection flaw detector and to display the ultrasonic flaw detection results of the pile foundation inspection flaw detector.

[0007] Furthermore, the auxiliary protection mechanism also includes locking bolts, which are threaded to the upper middle part of the strip seat. The locking bolts are all installed in conjunction with the adjacent wires to limit the movement of the wires in the pile foundation inspection flaw detector.

[0008] Furthermore, the auxiliary protection mechanism also includes studs, threaded cylinders, and knobs. The studs are respectively set inside the dovetail grooves. The interior of each slide is rotatably connected to a threaded cylinder through a bearing. Each threaded cylinder is threadedly connected to an adjacent stud. Knobs are provided at opposite ends of two horizontally adjacent threaded cylinders. The spacing of the limit rods in the pile foundation testing flaw detector is adjusted according to the diameter of the pile foundation acoustic logging pipe.

[0009] Furthermore, the auxiliary protection mechanism also includes corrugated pipes, which are respectively disposed between the dovetail groove and the adjacent sliding seat. The corrugated pipes are respectively movably sleeved on the outer end of the adjacent studs to wrap and prevent dust from entering the exposed end of the studs in the pile foundation inspection flaw detector.

[0010] Furthermore, the protective assembly includes telescopic columns, springs, and arc-shaped seats. The telescopic columns are evenly arranged on the outer sides of the transmitting probe and the receiving probe, and each telescopic end of the telescopic column is provided with an arc-shaped seat. Springs are provided between the outer sides of the transmitting probe and the receiving probe and the adjacent arc-shaped seats. The springs are movably sleeved on the outer ends of the adjacent telescopic columns to provide collision protection for the probes in the pile foundation flaw detectors as they penetrate into the pile foundation acoustic tube.

[0011] Furthermore, the bottom wall of the housing is provided with two horizontally symmetrically distributed card slots, and the upper rear end of the housing is hinged with a cover to accommodate and limit the probe inside the pile foundation inspection flaw detector.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This flaw detector for pile foundation testing has the following advantages:

[0013] When using a flaw detector for pile foundation testing, the protective components can protect the probe from collisions as it enters the sonic logging tube of the pile foundation, reducing the probability of the probe being damaged by collisions. At the same time, the device, through a strip seat, locking bolt, sliding seat, limit rod, stud, threaded cylinder, and knob, can vertically suspend and fix the probe in the sonic logging tube of the pile foundation, reducing the probability of it shaking and avoiding interference with the ultrasonic transmission and reception signals caused by the probe shaking, thereby improving the accuracy of subsequent flaw detection measurements of the pile foundation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0016] Figure 3 This is an enlarged structural diagram of point A in this utility model.

[0017] In the diagram: 1. Box shell, 2. Inner shell, 3. Battery, 4. Microcontroller, 5. Transmitting probe, 6. Receiving probe, 7. Wire, 8. Auxiliary protection mechanism, 81. Strip seat, 82. Locking bolt, 83. Slide seat, 84. Limiting rod, 85. Stud, 86. Threaded cylinder, 87. Knob, 88. Corrugated pipe, 89. Protective components, 891. Telescopic column, 892. Spring, 893. Arc seat, 9. Touch screen, 10. Card slot, 11. Box cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3This embodiment provides a technical solution: a flaw detector for pile foundation testing, including a housing 1, an inner shell 2 on the bottom wall of the housing 1, a transmitting probe 5 installed at the left end of the inner shell 2, a receiving probe 6 installed at the right end of the inner shell 2, a microcontroller 4 on the bottom wall of the inner shell 2, the transmitting probe 5 and the receiving probe 6 being bidirectionally electrically connected to the microcontroller 4 via wires 7, a battery 3 on the bottom wall of the inner shell 2, the input end of the battery 3 being electrically connected to the input end of the microcontroller 4, a touch screen 9 on the upper side of the inner shell 2, the touch screen 9 being bidirectionally electrically connected to the microcontroller 4, two horizontally symmetrically distributed card slots 10 on the bottom wall of the housing 1, and a cover 11 hinged to the upper rear side of the housing 1. During pile foundation flaw detection, the microcontroller 4 activates the transmitting probe 5 and the receiving probe 6 (the battery 3 provides power support for the operation of the microcontroller 4), and the transmitting probe 5 transmits mechanical vibration energy into the pile foundation concrete through a sonic logging tube. The receiving probe 6 receives the mechanical vibration energy signal transmitted within the pile foundation concrete and transmits it to the microcontroller 4 as an electrical signal. The microcontroller 4 calculates the sound velocity and amplitude of the pile foundation concrete based on the propagation time and amplitude of the sound wave. Subsequently, the microcontroller 4 displays the relationship between the sound wave and amplitude as an electrical signal through the touch screen 9, avoiding the need for staff to directly observe the relationship between the sound velocity and amplitude. This allows for the determination of the uniformity, defect location, and nature of the pile foundation concrete. At the same time, staff can input commands to the microcontroller 4 through the touch screen 9. After the pile foundation flaw detection is completed, the transmitting probe 5 and the receiving probe 6 are respectively snapped into their corresponding slots 10 to fix them in place. Then, the staff flips and fastens the box cover 11 around the hinge for easy carrying and movement. It also includes an auxiliary protection mechanism 8.

[0020] Auxiliary protection mechanism 8 includes a strip seat 81, a slide 83, a limiting rod 84, and a protective component 89. The strip seats 81 are movably sleeved on the outside of the wires 7. Each strip seat 81 has a horizontally symmetrically distributed dovetail groove on its front side. The slide 83 is slidably connected inside each dovetail groove. The front side of each slide 83 is provided with a limiting rod 84. The outer sides of the transmitting probe 5 and the receiving probe 6 are provided with protective components 89. The auxiliary protection mechanism 8 also includes locking bolts 82, which are threaded to the upper middle part of the strip seat 81. The locking bolts 82 are installed in conjunction with the adjacent wires 7. The auxiliary protection mechanism 8 also includes studs 85, threaded cylinders 86, and knobs 87. The studs 85 are respectively set inside the dovetail grooves. The slide 83 is connected to the upper middle part of each dovetail groove by a shaft. The bearing is rotatably connected to a threaded cylinder 86, which is threadedly connected to an adjacent stud 85. A knob 87 is provided at the opposite ends of two horizontally adjacent threaded cylinders 86. The auxiliary protection mechanism 8 also includes bellows 88, which are respectively disposed between a dovetail groove and an adjacent slide 83. The bellows 88 are movably sleeved on the outer ends of adjacent studs 85. The protection component 89 includes telescopic columns 891, springs 892, and arc-shaped seats 893. The telescopic columns 891 are evenly distributed on the outer sides of the transmitting probe 5 and the receiving probe 6. An arc-shaped seat 893 is provided at the telescopic end of each telescopic column 891. A spring 892 is provided between the outer side of the transmitting probe 5 and the receiving probe 6 and the adjacent arc-shaped seat 893. The spring 892 is movably sleeved on the adjacent telescopic column. When using the device to perform ultrasonic testing on the pile foundation at the outer end of 891, firstly, according to the diameter of the pre-embedded acoustic tube in the pile foundation, simultaneously rotate the two knobs 87 in the direction of the transmitting probe 5. The knobs 87 drive the corresponding threaded cylinder 86 to rotate. The threaded cylinder 86 is threadedly connected to the corresponding stud 85 (the exposed part of the stud 85 is wrapped with a corrugated tube 88 for dust prevention. The corrugated tube 88 is a corrugated structure made of multiple layers of metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance). This causes the slide 83 to drive the limiting rod 84 to move along the dovetail groove to the end away from the lateral center of the adjacent strip seat 81, thereby making the lateral spacing of the two limiting rods 84 in the direction of the transmitting probe 5 and the acoustic tube 84 align with the diameter of the pre-embedded acoustic tube. The tubes have the same inner diameter. The transmitting probe 5 is then vertically inserted into the acoustic tube, pointing downwards. At this point, the strip seat 81 on one side of the transmitting probe 5 is placed vertically downwards, so that both limiting rods 84 are inserted into the tube body. Simultaneously, the front side of the slide 83 contacts the surface of the acoustic tube opening, thus locking the strip seat 81 into the opening of the acoustic tube. The transmitting probe 5 drives the corresponding wire 7 to continuously penetrate deeper into the acoustic tube. During this process, the wire 7 makes guiding contact with the circular hole of the strip seat 81 on one side of the transmitting probe 5, ensuring that the transmitting probe 5 remains relatively vertical under its own weight as it penetrates the acoustic tube. When the transmitting probe 5 reaches a suitable depth inside the acoustic tube, the locking bolt 82 on the left side is rotated to allow its lower end to continue penetrating deeper via the threaded connection.This fixes the position of the wire 7 on one side of the transmitting probe 5, eliminating the need for staff to constantly pull the wire 7. If the transmitting probe 5 shakes during its insertion into the acoustic tube, the arc-shaped seat 893 in the direction of the shaking will first collide with the closed section of the acoustic tube. The arc-shaped seat 893 is compressed, causing the telescopic end of the telescopic column 891 and the spring 892 to retract. The retraction and restoring force of the spring 892 causes the transmitting probe 5 to move in the opposite direction of the shaking, preventing frequent collisions with the acoustic tube wall as the transmitting probe 5 penetrates deeper into the acoustic tube. If damage occurs, the receiving probe 6 is then placed into the corresponding sonic logging tube and fixed using the same principle. After the pile foundation flaw detection is completed, the sliding seat 83 is retracted into the corresponding dovetail groove using the same principle. This device, through its protective components, can protect the probe from collision during its entry into the pile foundation sonic logging tube, reducing the probability of probe damage. Simultaneously, the device, through its transmission and limiting elements, can vertically suspend and fix the probe entering the pile foundation sonic logging tube, reducing the probability of shaking and thus improving the accuracy of subsequent pile foundation flaw detection measurements.

[0021] The working principle of the pile foundation flaw detector provided by this utility model is as follows: When using the device to perform ultrasonic flaw detection on the pile foundation, firstly, according to the diameter of the pre-embedded acoustic tube in the pile foundation, simultaneously rotate the two knobs 87 in the direction of the transmitting probe 5. The knobs 87 drive the corresponding threaded cylinder 86 to rotate. The threaded cylinder 86 is threadedly connected to the corresponding stud 85 (the exposed part of the stud 85 is wrapped with a corrugated tube 88 for dust prevention. The corrugated tube 88 is a corrugated structure made of multiple layers of metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance). This causes the slide 83 to drive the limiting rod 84 to move along the dovetail groove to one end away from the lateral center of the adjacent strip seat 81, thereby causing the transmitting probe to rotate. The lateral spacing between the two limiting rods 84 in the direction of head 5 is the same as the inner diameter of the sonic logging tube. Then, the transmitting probe 5 is vertically inserted into the sonic logging tube with its head facing downwards. At this time, the strip seat 81 on one side of the transmitting probe 5 is placed vertically downwards, so that both limiting rods 84 are inserted into the body of the sonic logging tube. Simultaneously, the front side of the slide 83 contacts the surface of the sonic logging tube opening, thus locking the strip seat 81 to the opening of the sonic logging tube. The transmitting probe 5 drives the corresponding wire 7 to continuously penetrate deeper into the sonic logging tube. During this process, the wire 7 is guided by the circular hole of the strip seat 81 on one side of the transmitting probe 5, thus ensuring that the transmitting probe 5 remains relatively vertical under its own weight as it penetrates the sonic logging tube. When the transmitting probe 5 has penetrated to a suitable depth into the sonic logging tube, the locking mechanism on the left side is rotated. Bolt 82 extends its lower end through a threaded connection, thereby fixing the position of wire 7 on one side of the transmitting probe 5. This eliminates the need for staff to constantly pull wire 7. If the transmitting probe 5 shakes during its insertion into the acoustic tube, the arc-shaped seat 893 in the direction of the shaking will first collide with the closed section of the acoustic tube. Under pressure, the telescopic end of the telescopic column 891 and the spring 892 retract. The retraction and restoring force of the spring 892 causes the transmitting probe 5 to move in the opposite direction of the shaking, preventing damage from frequent collisions with the acoustic tube wall. Subsequently, the receiving probe 6 is placed into the corresponding acoustic tube using the same principle and fixed. Then, the microcontroller 4 activates the transmitting probe. The transmitting probe 5 transmits mechanical vibration energy into the pile foundation concrete through the acoustic tube. The receiving probe 6 receives the mechanical vibration energy signal transmitted within the pile foundation concrete and transmits it to the microcontroller 4 as an electrical signal. The microcontroller 4 calculates the sound velocity and amplitude of the pile foundation concrete based on the propagation time and initial wave amplitude of the sound wave. Subsequently, the microcontroller 4 displays the relationship between the sound wave and amplitude as an electrical signal through the touch screen 9, avoiding the need for workers to directly observe the relationship between sound velocity and amplitude. This allows for the determination of the uniformity, defect location, and nature of the pile foundation concrete. Simultaneously, workers can input commands to the microcontroller 4 through the touch screen 9. After the pile foundation flaw detection is completed...Using the same principle, the slide 83 is retracted into the corresponding dovetail groove. Then, the transmitting probe 5 and receiving probe 6 are respectively snapped into their corresponding holders 10, thus securing the transmitting probe 5 and receiving probe 6. Finally, the operator flips and closes the case cover 11 around the hinge for easy carrying and movement.

[0022] It is worth noting that the microcontroller 4 disclosed in the above embodiments can be an MSP430, the transmitting probe 5 can be an F40-14TR2-T-wired ultrasonic probe, the receiving probe 6 can be a TCT40-16, and the touch screen 9 can be a TPC1570Gi. The microcontroller 4 controls the operation of the transmitting probe 5, the receiving probe 6, and the touch screen 9 using methods commonly used in the prior art.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flaw detector for pile foundation testing, comprising a housing (1), wherein the bottom wall of the housing (1) is provided with an inner shell (2), a transmitting probe (5) is installed at the left end of the inner shell (2), a receiving probe (6) is installed at the right end of the inner shell (2), a microcontroller (4) is provided at the bottom wall of the inner shell (2), and the transmitting probe (5) and the receiving probe (6) are both bidirectionally electrically connected to the microcontroller (4) via wires (7), characterized in that: It also includes auxiliary protective mechanisms (8); Auxiliary protection mechanism (8): It includes a strip seat (81), a slide seat (83), a limiting rod (84) and a protective component (89). The strip seat (81) is movably sleeved on the outside of the wire (7). The front side of the strip seat (81) is provided with dovetail grooves that are symmetrically distributed laterally. The slide seat (83) is slidably connected inside the dovetail groove. The front side of the slide seat (83) is provided with a limiting rod (84). The outer side of the transmitting probe (5) and the receiving probe (6) are provided with a protective component (89).

2. The flaw detector for pile foundation testing according to claim 1, characterized in that: The bottom wall of the inner shell (2) is provided with a storage battery (3), the input end of the storage battery (3) is electrically connected to the input end of the microcontroller (4), and the upper side of the inner shell (2) is provided with a touch screen (9), which is bidirectionally electrically connected to the microcontroller (4).

3. The flaw detector for pile foundation testing according to claim 1, characterized in that: The auxiliary protection mechanism (8) also includes locking bolts (82), which are threaded to the upper middle part of the strip seat (81) and are installed in conjunction with the adjacent wires (7).

4. A flaw detector for pile foundation testing according to claim 1, characterized in that: The auxiliary protection mechanism (8) also includes studs (85), threaded cylinders (86) and knobs (87). The studs (85) are respectively disposed inside the dovetail groove. The threaded cylinders (86) are rotatably connected to the inside of the slide (83) through bearings. The threaded cylinders (86) are threadedly connected to the adjacent studs (85). The opposite ends of two horizontally adjacent threaded cylinders (86) are provided with knobs (87).

5. A flaw detector for pile foundation testing according to claim 4, characterized in that: The auxiliary protection mechanism (8) also includes a corrugated pipe (88), which is respectively disposed between the dovetail groove and the adjacent slide (83), and the corrugated pipe (88) is movably sleeved on the outer end of the adjacent stud (85).

6. A flaw detector for pile foundation testing according to claim 1, characterized in that: The protective component (89) includes a telescopic column (891), a spring (892), and an arc-shaped seat (893). The telescopic columns (891) are evenly arranged on the outside of the transmitting probe (5) and the receiving probe (6). The telescopic ends of the telescopic columns (891) are provided with arc-shaped seats (893). Springs (892) are provided between the outside of the transmitting probe (5) and the receiving probe (6) and the adjacent arc-shaped seats (893). The springs (892) are movably sleeved on the outer ends of the adjacent telescopic columns (891).

7. A flaw detector for pile foundation testing according to claim 1, characterized in that: The bottom wall of the box shell (1) is provided with two horizontally symmetrically distributed card slots (10), and the upper rear side of the box shell (1) is hinged with a box cover (11).

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