一种罐车用的声发射探头夹具
By using multiple small-area magnetic blocks and an adjustable clamp structure in the acoustic emission detection of tank trucks, the problem of poor magnetic attraction effect of magnetic adsorption clamps in tank truck detection is solved, achieving stable coupling and accurate detection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGYAN BRANCH OF FUJIAN SPECIAL EQUIP INSPECTION & RES INST
- Filing Date
- 2025-06-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing magnetic adsorption fixtures have poor magnetic attraction in the acoustic emission testing of tank trucks and cannot adapt to the testing conditions, resulting in poor coupling between the probe and the surface of the tank truck, which affects the accuracy of the test results.
It employs a combination of multiple small-area magnetic blocks, each of which can be individually adjusted in height and angle. Combined with an electric push rod and a pressure sensor to control the magnetic force, it ensures a tight fit. The clamp body can rotate to adapt to the curved surface of the tanker truck and is equipped with an elastic buffer layer and a coupling agent supply system to improve coupling stability.
It achieves stable coupling under different curvatures and operating conditions, improves the data integrity and accuracy of acoustic emission detection, avoids probe detachment, and ensures the consistency and strength of signal reception.
Smart Images
Figure CN224518661U_ABST
Abstract
Claims
1. A sound emission probe clamp for tank truck, which structure comprises a clamp body, the bottom of the clamp body is provided with a magnetic attraction device; characterized in that: The clamp body has a cavity for accommodating an acoustic emission probe at its center. The magnetic attraction device is provided in two sets, which are respectively located on both sides of the cavity. Each set of the magnetic attraction device includes several magnetic blocks arranged closely but independently, and a driving device that corresponds to each magnetic block. The number of magnetic blocks is determined according to the curvature of the tank truck. The driving device is installed in the clamp body and is used to independently adjust the vertical movement stroke of the magnetic blocks connected to its ends relative to the tank truck.
2. A tank truck acoustic emission probe holder as defined in claim 1, wherein: The driving device is an electric push rod, which has a separate power supply or is connected to a total power supply located in the fixture body.
3. A tank truck acoustic emission probe holder as defined in claim 1, wherein: A sheet-like first pressure sensor is provided at the joint surface between the drive device and the magnetic block. The first pressure sensor is signal-connected to the drive device and is used to control the output stroke of the drive device, thereby adjusting the degree of contact between the magnetic block and the tanker.
4. The acoustic emission probe clamp for tank trucks according to claim 1, characterized in that: The clamp body has a cavity, and the cavity has a mounting base. The mounting base can rotate relative to the cavity at a certain angle. The magnetic attraction device is fixed on the mounting base. The inner wall of the cavity has an arc-shaped groove, and the outer wall of the mounting base has a corresponding slider that fits into the arc-shaped groove. A limiting structure is provided between the arc-shaped groove and the slider. The limiting structure is used to adjust the rotation angle of the mounting base. When the mounting base rotates, it drives the magnetic attraction device to adjust to different angles to adapt to the curvature direction of the tank truck surface.
5. A tank truck acoustic emission probe holder as defined in claim 4 wherein: The limiting structure is a combination structure of a through hole and a fastening bolt. The through hole extends from the outside of the fixture body into the cavity. At least one end of the through hole has an internal thread. The fastening bolt can pass through the through hole and abut against the slider to achieve limiting.
6. A tank truck acoustic emission probe holder as defined in claim 4 wherein: The limiting structure is a combination structure of a limiting groove and an elastic element. The limiting groove is equidistantly arranged on the arc-shaped groove, and the elastic element is arranged on the slider. Alternatively, the limiting groove is equidistantly arranged on the slider, and the elastic element is arranged on the wall of the arc-shaped groove. The end of the elastic element is provided with a guide slope. When the mounting base rotates to the position of the limiting groove, the elastic element pops out and is embedded in the limiting groove for fixation. When the mounting base continues to rotate, the elastic element is forced to disengage from the limiting groove, thereby releasing the limiting position.
7. The acoustic emission probe clamp for a tanker truck according to claim 1, characterized in that: The bottom and / or sides of the accommodating cavity are provided with an elastic buffer layer for buffering and fixing the acoustic emission probe.
8. A tank truck acoustic emission probe holder as defined in claim 7, wherein: The elastic buffer layer is made of foam. A second pressure sensor is provided at the contact point between the foam and the non-detection surface of the acoustic emission probe. The second pressure sensor is connected to all drive devices and is used to assist in controlling and adjusting the fit between the magnetic suction device and the tanker.
9. A tank truck acoustic emission probe holder as defined in claim 1 wherein: The inner wall of the accommodating cavity is provided with several arc-shaped elastic sheets, and the upper and lower edges of the arc-shaped elastic sheets are provided with arc-shaped guide folds. The arc-shaped elastic sheets are used to fix the acoustic emission probe in the circumferential direction.
10. A tank truck acoustic emission probe holder according to claim 1, characterized in that: The fixture body is also provided with a supply cavity filled with coupling agent. The bottom of the supply cavity is connected to a flexible conduit that can be bent at will. The end of the flexible conduit is flat and is set to fit the edge of the coupling surface of the acoustic emission probe. A piston is provided in the supply cavity. The piston is connected to a power device. The power device is connected in series with a timer. The timer is used to control the downward stroke of the power device.