A corrugated beam base metal thickness detection device

Abstract

The utility model relates to metal detection technical field, concretely, it relates to a wave beam base metal thickness detection equipment. It includes probe, and the probe includes storage shell, and the storage shell fixedly connected at the interface end part, and the inside of storage shell is equipped with a plurality of pressure sensor, and the storage shell is equipped with the elastic layer with pressure sensor end part, and the elastic layer end part is equipped with a plurality of dot end head. Through the combination of the dot end head of multipoint distribution and the elastic layer with the elastic deformation ability, the elastic layer provides the deformation support and the rebound power for the dot end head, the dot end head can adaptively adhere with the different radian of wave beam, improves the defect that the existing plane probe can only contact the arc surface locally, and the silica gel gasket contained through the elastic layer is connected between the dot end head and the storage shell, and the adhesion gap brought when the dot end head adheres under the different radian is compensated by the self elasticity, guarantees the complete transmission of ultrasonic wave between the dot end head and the wave beam.

Description

Technical Field

[0001] This utility model relates to the field of metal detection technology, and more specifically, to a device for detecting the thickness of a corrugated beam substrate metal. Background Technology

[0002] Currently, the mainstream equipment for measuring the thickness of corrugated beam substrate metal is the ultrasonic thickness gauge. Its core consists of a main unit, a detection probe, and a coupling agent. The basic principle is to emit ultrasonic waves through the probe into the corrugated beam substrate metal, and calculate the thickness using the propagation speed and reflection time of the ultrasonic waves within the metal. It is widely used for quality inspection in guardrail production and for aging and corrosion detection in maintenance, and is a key process in ensuring the impact resistance and service life of corrugated beams. Most existing ultrasonic thickness gauges use a planar contact surface design for their probes. This design was originally developed for flat metal workpieces, and it can achieve stable contact and sound wave transmission when inspecting workpieces with regular surfaces.

[0003] However, the corrugated beam is actually a wavy, arc-shaped surface structure, resulting in poor compatibility between existing planar probes and the corrugated beam surface. When the planar probe is placed against the arc-shaped surface, only a small local contact can be achieved in the middle. A gap is formed between the probe edge and the corrugated beam surface, and the coupling agent is easily lost quickly from the gap, disrupting the continuity of ultrasonic wave transmission. This leads to incomplete ultrasonic signal transmission, and during the detection process, there are often situations where the values ​​cannot be read or the read values ​​are too low. It is necessary to repeatedly adjust the probe position and replenish the coupling agent for retesting, which not only reduces the detection efficiency but may also affect the accurate judgment of whether the thickness of the corrugated beam substrate metal meets the standard due to the numerical deviation of multiple retests.

[0004] Therefore, we propose a device for detecting the thickness of corrugated beam substrate metal. Utility Model Content

[0005] This invention provides a device for detecting the thickness of a corrugated beam substrate metal. By incorporating multiple dotted ends on the probe, an elastic layer with elastic deformation capability, and a pressure sensor, the dotted ends can adapt to the curvature differences of the corrugated beam, ensuring sufficient contact with the curved surface and complete ultrasonic wave transmission. Simultaneously, the pressure sensor determines the effectiveness of the fit to ensure reliable test data, thereby solving the problems mentioned in the background art.

[0006] The existing planar probes have poor compatibility with the curved surface of the wave beam. Local contact leads to loss of coupling agent and incomplete ultrasonic wave transmission, resulting in unreadable or low values. This requires repeated measurements, which reduces efficiency and affects the judgment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A device for detecting the thickness of a corrugated beam substrate metal includes a wire with interfaces at both ends. One interface is connected to a detector, and the other interface has a probe. The probe includes a storage housing, which is fixedly connected to the interface end. Multiple pressure sensors are disposed inside the storage housing.

[0009] The storage shell and the pressure sensor end are provided with an elastic layer, and the end of the elastic layer is provided with a plurality of round dot ends; the round dot ends are used to directly contact the arc-shaped surface of the wave beam, and the elastic layer is used to provide elastic deformation capability so that the round dot ends can adapt and fit according to the difference in curvature.

[0010] Preferably, the dotted ends are distributed in multiple points, the outer wall of the dotted ends is provided with a PTFE wear-resistant coating, and the multiple dotted ends are made of polyurethane and tungsten powder combined with a structure with a built-in stainless steel conductive sheet. The multiple dotted ends correspond one-to-one with multiple pressure sensors.

[0011] Preferably, the elastic layer includes a sealing gasket, which is fixedly connected between the storage shell and multiple dot ends. The sealing gasket has multiple holes inside, and a gasket is placed inside the holes of the sealing gasket. The gasket is fixed between the dot ends and the pressure sensor.

[0012] Preferably, the sealing gasket is made of silicone. The sealing gasket is used to achieve rebound and gap compensation by utilizing the elasticity of silicone, to assist the round end in rebounding when adapting to the curvature of the wave beam, and to compensate for the fitting gap caused by different curvatures. The gasket is used to assist the round end in maintaining stable support after rebounding and resetting after being pressed.

[0013] Preferably, the pressure sensor transmits the contact pressure of the dot end through a gasket, enabling the pressure sensor to accurately detect pressure signals; the dot end rebounds and resets with the help of the elasticity of the gasket, providing buffer protection for the pressure sensor.

[0014] Preferably, the pressure sensor is used to detect the contact pressure between the corresponding dot end and the corrugated beam in real time, and transmits the pressure signal to the detector to determine whether the fit is effective and ensure the reliability of the detection data; the storage shell is used as the main support structure of the probe, fixing and accommodating the pressure sensor and the elastic layer, and connecting the interface to provide protection for each component and ensure the stability of the overall structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In a corrugated beam substrate metal thickness detection device, a multi-point distributed dot end is combined with an elastic layer with elastic deformation capability. The elastic layer provides deformation support and rebound assistance for the dot end, allowing the dot end to adaptively fit with different curvatures of the corrugated beam. This improves upon the shortcomings of existing planar probes that can only partially contact curved surfaces, achieving full adaptation between the probe and the corrugated beam surface. A silicone sealing gasket contained in the elastic layer connects the dot end and the storage shell. Its elasticity compensates for the fitting gap caused by the dot end fitting under different curvatures, ensuring complete transmission of ultrasonic waves between the dot end and the corrugated beam.

[0017] 2. In a corrugated beam substrate metal thickness detection device, the gaskets in the elastic layer correspond one-to-one with the dot end, the pressure sensor, and the gaskets. The gaskets transmit the contact pressure of the dot end to the pressure sensor. The pressure sensor senses the contact pressure in real time and judges the validity. There is no need to manually adjust the probe position repeatedly, which reduces invalid detection operations and filters valid detection data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the probe structure of this utility model;

[0020] Figure 3 This is an exploded view of the probe structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the probe of this utility model;

[0022] Figure 5 This is a schematic diagram of the elastic layer structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the pressing structure of this utility model.

[0024] The components represented by each number in the attached diagram are listed below: 1. Detector; 2. Wire; 3. Interface; 4. Probe; 41. Dot end; 42. Elastic layer; 420. Gasket; 421. Sealing gasket; 43. Pressure sensor; 44. Storage housing. Detailed Implementation

[0025] 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.

[0026] Example

[0027] Please see Figure 1 - Figure 6 The diagram shows a corrugated beam substrate metal thickness detection device, which includes a wire 2, with interfaces 3 at both ends of the wire 2. One end of one interface 3 is connected to a detector 1, and the other end of the interface 3 is provided with a probe 4. The probe 4 includes a storage shell 44, which is fixedly connected to the end of the interface 3. Multiple pressure sensors 43 are provided inside the storage shell 44.

[0028] The storage shell 44 and the pressure sensor 43 are provided with an elastic layer 42 at their ends, and the elastic layer 42 is provided with a plurality of round ends 41 at its ends; the round ends 41 are used to directly contact the arc-shaped surface of the wave beam, and the elastic layer 42 is used to provide elastic deformation capability so that the round ends 41 can adapt and fit according to the difference in curvature.

[0029] For details, please refer to Figure 2 - Figure 4 As shown, the dot end 41 is distributed in multiple points. The outer wall of the dot end 41 is coated with PTFE wear-resistant coating. The multiple dot ends 41 are made of polyurethane and tungsten powder combined and have a built-in stainless steel conductive sheet structure. The multiple dot ends 41 correspond one-to-one with multiple pressure sensors 43.

[0030] When the probe 4 contacts the arc-shaped surface of the wave beam, the multi-point distributed round tip 41 can independently adapt to the difference in the curvature of the wave beam. Specifically, when the round tip 41 contacts the arc protrusion, the round tip 41 at that point is slightly compressed, and when it contacts the arc concavity, the round tip 41 at that point elastically rebounds. Through their respective targeted elastic deformation, they achieve fit with the arc surface, avoiding the defect of the traditional planar probe 4 only making local contact.

[0031] Furthermore, since the outer wall of the dot end 41 is coated with a PTFE wear-resistant coating, and because PTFE (polytetrafluoroethylene) material itself has an extremely low coefficient of friction and excellent wear resistance, when the dot end 41 is pressed against the arc-shaped surface of the corrugated beam, the PTFE coating directly serves as the contact medium. Its low coefficient of friction can significantly reduce the sliding friction between the dot end 41 and the surface of the corrugated beam. Even if slight slippage occurs during the test due to position adjustment, it can prevent scratches or material wear on the two surfaces due to friction. At the same time, the PTFE coating has high hardness and scratch resistance, which can resist the scratches from hard objects such as rusted sharp corners and small protrusions that may exist on the surface of the corrugated beam, and prevent the polyurethane material inside the dot end 41 from being directly exposed and damaged, thereby extending the overall service life of the dot end 41 and ensuring that the bonding stability and ultrasonic transmission performance do not decrease during long-term testing.

[0032] Because polyurethane itself is a highly elastic polymer material, it has good tensile and compressive resilience. When the dot end 41 contacts the curved surface of the corrugated beam, the polyurethane material can deform in a targeted manner according to the convex or concave shape of the corrugated beam. When it contacts the convex part of the curvature, the polyurethane is slightly compressed to ensure that the end is in close contact with the surface. When it contacts the concave part of the curvature, the polyurethane elastically rebounds and fills the gap, so that the dot end 41 at different positions can adapt to the curvature difference of the corrugated beam.

[0033] When ultrasound propagates between different materials, if the acoustic impedance difference between the two materials is too large, most of the sound waves will be reflected, and only a small amount will enter the object being measured, affecting the detection accuracy. Therefore, by combining tungsten powder with polyurethane, the acoustic impedance of the composite material can be made close to that of steel by adjusting the mixing ratio of tungsten powder. This reduces the reflection loss of ultrasound at the interface between the dot end 41 and the wave beam, allowing more ultrasound to enter the interior of the wave beam, ensuring complete sound wave transmission, and avoiding missing or low detection values.

[0034] Because the curvature of each point on the curved surface of the wave beam is different, the contact pressure of multiple round ends 41 when pressed varies. Some ends may have insufficient pressure due to the concave curvature, while others may have excessive pressure due to the convex curvature. Through the one-to-one correspondence between the round ends 41 and the pressure sensors 43, each pressure sensor 43 can independently monitor the contact pressure of the corresponding round end 41 and determine whether it is within the effective contact pressure range. If a pressure sensor 43 detects that the pressure is too low, it indicates that the corresponding round end 41 is not in sufficient contact, and it can promptly prompt the adjustment of the probe 4 position to avoid affecting the overall detection results due to poor contact of a single end.

[0035] After the pressure sensor 43 transmits the monitored pressure signal to the detector 1, the system can automatically filter out the ultrasonic signals corresponding to the round end 41 with qualified pressure, and eliminate invalid signals generated by the end with insufficient pressure. This ensures that the final output thickness data is based on the detection results of effective adhesion, reduces human judgment error, and avoids the problem of unreliable overall data due to poor local adhesion in the existing technology. Through one-to-one pressure monitoring, the adhesion status of each round end 41 can be quickly identified. Only a slight adjustment of the probe angle is needed to make most ends reach the effective pressure, reducing the number of retests and improving outdoor testing efficiency.

[0036] See Figure 3 - Figure 5 As shown, the elastic layer 42 includes a sealing gasket 421, which is fixedly connected between the storage shell 44 and multiple dot ends 41. The sealing gasket 421 has multiple holes inside, and a gasket 420 is provided inside the holes of the sealing gasket 421. The gasket 420 is fixed between the dot ends 41 and the pressure sensor 43.

[0037] Among them, the sealing gasket 421 is made of silicone. The sealing gasket 421 is used to achieve rebound and gap compensation by utilizing the elasticity of silicone. It assists the round end 41 in rebounding when adapting to the curvature of the wave beam, and compensates for the fitting gap caused by different curvatures. The gasket 420 is used to assist the round end 41 in maintaining stable support after it rebounds and resets after being pressed.

[0038] Since the silicone sealing gasket 421 is fixed between the storage shell 44 and multiple dot ends 41, its overall structure is sheet-like and has multiple holes reserved inside. The position of the holes corresponds one-to-one with the dot ends 41 and the pressure sensor 43, accommodating the embedded gasket 420. This allows one end of the gasket 420 to be fixedly connected to the dot end 41, and the other end to abut against the pressure sensor 43, forming a vertical connection path. At the same time, the sealing gasket 421 covers the outside of the holes, wrapping the gap between the storage shell 44 and the dot ends 41.

[0039] When the probe 4 contacts the curved surface of the wave beam, the dot end 41 deforms accordingly to the curvature difference. The dot end 41 is compressed when it contacts the protrusion, and it needs to rebound and extend when it contacts the depression. At this time, the silicone sealing gasket 421, with its high elasticity, adapts to the deformation of the dot end 41, filling the tiny gap between the storage shell 44 and the end due to the curvature difference. At the same time, it provides auxiliary elastic force when the dot end 41 rebounds, helping the end to quickly reset and fit tightly against the surface of the wave beam, compensating for the fitting gap caused by different curvatures, and preventing the interruption of ultrasonic wave transmission due to the gap.

[0040] Because the gasket 420 is made of a thin metal sheet, it has good pressure conductivity. When the dot end 41 comes into contact with the corrugated beam and generates pressure, the gasket 420 can transmit the contact pressure of the end to the corresponding pressure sensor 43. Since the gasket 420, the dot end 41, and the pressure sensor 43 are all tightly fixed, it avoids pressure loss due to contact gaps or material deformation during transmission, ensuring that the pressure sensor 43 can capture the contact pressure data of the end in real time. At the same time, if the gasket 420 is made of metal, it can also assist the transmission path of ultrasonic waves around the dot end 41, reduce the reflection loss of sound waves, and indirectly ensure the integrity of ultrasonic wave transmission.

[0041] When the pressing force is removed, the pad 420, with its own structural rigidity and elasticity, pushes the dot end 41 to quickly spring back to its original position, ensuring that the end can quickly return to its initial shape to cope with the next detection. At the same time, it limits the lateral sway of the end during the bonding process, ensures the vertical correspondence between the end and the pressure sensor 43, and enhances the transmission stability.

[0042] See Figure 4 - Figure 6As shown, the pressure sensor 43 transmits the contact pressure of the dot end 41 through the gasket 420, enabling the pressure sensor 43 to accurately detect the pressure signal; the dot end 41 is reset by the elasticity of the gasket 420, providing buffer protection for the pressure sensor 43.

[0043] The pressure sensor 43 is used to detect the contact pressure between the corresponding dot end 41 and the wave beam in real time, and transmits the pressure signal to the detector 1 to determine whether the fit is effective and ensure the reliability of the detection data. The storage shell 44 is used as the main support structure of the probe 4, which fixes and accommodates the pressure sensor 43 and the elastic layer 42, and connects to the interface 3 to provide protection for each component and ensure the stability of the overall structure.

[0044] After receiving the pressure signal transmitted by the gasket 420, the pressure sensor 43 transmits the signal to the detector 1 in real time via the wire 2. The detector 1 system judges the received pressure signal according to the preset effective bonding pressure range. If the pressure is up to standard, it means that the corresponding dot end 41 is fully bonded and the generated ultrasonic signal is a valid signal. If the pressure is not up to standard, it is determined that the end is not fully bonded and the corresponding ultrasonic signal is an invalid signal and is automatically rejected. Based on the valid signal, the thickness data of the waveform beam substrate metal is calculated and output to ensure the reliability of the detection data and avoid numerical deviations caused by poor local bonding.

[0045] In addition, the storage shell 44 serves as the main support structure for the probe 4, stably housing the pressure sensor 43 and the elastic layer 42 inside. Through fixed connection, it ensures the vertical correspondence between the pressure sensor 43, the gasket 420, and the dot end 41, preventing the components from shifting during the detection process. At the same time, the storage shell 44 can withstand dust, rain, and minor impacts during outdoor testing, providing protection for the internal components. Furthermore, through fixed connection with the interface 3, it enables the connection between the probe 4, the wire 2, and the detector 1, ensuring signal transmission and the structural stability of the overall equipment.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wave-shaped beam substrate metal thickness detection device, comprising a wire (2), the wire (2) being provided with an interface (3) at each end, one end of the interface (3) being connected with a detector (1), and the other end of the interface (3) being provided with a probe (4), characterized in that: The probe (4) includes a storage shell (44), which is fixedly connected to the end of the interface (3), and multiple pressure sensors (43) are provided inside the storage shell (44). The storage shell (44) and the pressure sensor (43) are provided with an elastic layer (42), and the elastic layer (42) is provided with a plurality of round ends (41); the round ends (41) are used to directly contact the arc surface of the wave beam, and the elastic layer (42) is used to provide elastic deformation capability so that the round ends (41) can be adapted to fit the arc difference.

2. The corrugated web substrate metal thickness detection apparatus of claim 1, wherein: The dot end (41) is distributed in multiple points. The outer wall of the dot end (41) is provided with a PTFE wear-resistant coating. All the dot ends (41) are made of polyurethane and tungsten powder material and have a built-in stainless steel conductive sheet. The dot ends (41) correspond one-to-one with the pressure sensors (43).

3. The corrugated web substrate metal thickness detection apparatus of claim 1, wherein: The elastic layer (42) includes a sealing gasket (421), which is fixedly connected between the storage shell (44) and multiple dot ends (41). The sealing gasket (421) has multiple holes inside, and a gasket (420) is provided inside the holes of the sealing gasket (421). The gasket (420) is fixed between the dot end (41) and the pressure sensor (43).

4. The corrugated beam substrate metal thickness detection device according to claim 3, characterized in that: The sealing gasket (421) is made of silicone. The sealing gasket (421) is used to achieve rebound and gap compensation by utilizing the elasticity of silicone. It assists the round end (41) in rebounding when adapting to the curvature of the wave beam, and compensates for the fitting gap caused by different curvatures. The gasket (420) is used to assist the round end (41) in maintaining stable support after rebounding and resetting after being pressed.

5. The corrugated beam substrate metal thickness detection device according to claim 4, characterized in that: The pressure sensor (43) transmits the contact pressure of the dot end (41) through the gasket (420), enabling the pressure sensor (43) to accurately detect the pressure signal; the dot end (41) is reset by the elastic assistance of the gasket (420), providing buffer protection for the pressure sensor (43).

6. The corrugated beam substrate metal thickness detection device according to claim 1, characterized in that: The pressure sensor (43) is used to detect the contact pressure between the corresponding dot end (41) and the wave beam in real time, and transmit the pressure signal to the detector (1) to determine whether the fit is effective and ensure the reliability of the detection data; the storage shell (44) is used as the main support structure of the probe (4), to fix and accommodate the pressure sensor (43) and the elastic layer (42), and at the same time connect the interface (3) to provide protection for each component and ensure the stability of the overall structure.

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