Ultrasonic probe with measuring and positioning device
By integrating a measuring tape and an impact pin onto the ultrasonic probe, the problem of inaccurate defect location marking in manual ultrasonic testing of welds is solved, enabling clear marking and rapid measurement on the couplant surface, thus improving testing efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-15
AI Technical Summary
In manual ultrasonic testing of welds, existing technologies struggle to accurately mark defect locations and leave clear markings on weld surfaces coated with coupling agent, affecting the accuracy of defect identification.
A measuring tape and an impact pin are integrated into the ultrasonic probe. The measuring tape is used to measure the distance to defects, and the impact pin makes a pit on the weld surface and leaves an ink mark, so as to achieve simultaneous measurement and marking.
It improves the accuracy and speed of defect location, simplifies the operation process, ensures clear and accurate marking, and is suitable for weld surfaces coated with coupling agent.
Smart Images
Figure CN224247668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrasonic testing, specifically an ultrasonic probe with a built-in measurement and positioning device. Background Technology
[0002] In manual ultrasonic testing of welds, it is often necessary to determine whether the reflected wave is a defect reflection. The horizontal position of the reflected wave displayed by the ultrasonic flaw detector is the horizontal distance from the probe measured with a steel ruler. If the reflected wave is located on the weld, it is likely a defect. To determine whether it is a defect, it is sometimes necessary to inspect and mark the defect location from both sides of the weld. If the suspected defects detected on both sides of the weld are in the same location, it is generally determined to be a defect.
[0003] The current procedure for marking defect locations on the weld surface is as follows: 1. Hold the probe with one hand and the steel ruler with the other hand to measure the length. One end of the steel ruler needs to be pressed against the probe to ensure accurate positioning. At this time, a stone pen or marker cannot be used. 2. Keep the hand holding the steel ruler still and press it down to prevent displacement. Put the probe down, free your hand, and then pick up the stone pen or marker to mark according to the scale of the steel ruler.
[0004] Because the steel ruler is detached from the probe's limit during marking, it is prone to slippage, causing deviations in the marked position. Additionally, during weld inspection, coupling agent (machine oil or chemical paste) is applied to both sides and the weld surface. Due to the influence of this oil or paste, it is difficult for a stone pencil or marker to leave marks on the weld surface. When determining incomplete penetration at the weld root, accurate location of the reflected wave is crucial; inaccurate or unclear location markings severely impact defect identification. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide an ultrasonic probe with a built-in measurement and positioning device to improve measurement speed and the accuracy of defect positioning.
[0006] The technical solution of this utility model is:
[0007] An ultrasonic probe with a built-in measurement and positioning device includes a probe body, characterized in that: it also includes a measuring tape and an impact pin; the measuring tape's housing is fixed to the probe body; and the measuring tape's tape is fixed to the impact pin.
[0008] The measuring tape and the impact pin are located at the front of the probe body; the impact pin is arranged vertically; the probe body has a first slot for mounting the measuring tape and a second slot for receiving the impact pin.
[0009] The impact pin includes a main sleeve, an impact head that is axially slidably positioned at the bottom of the inner cavity of the main sleeve, a locking sleeve that is axially slidably positioned outside the top of the main sleeve, an elastic buckle that is fixed to the locking sleeve and disposed in the inner cavity of the main sleeve, and a release pin that passes through the locking sleeve from top to bottom and extends into the elastic buckle.
[0010] The impact striker also includes a first spring disposed between the locking sleeve and the main sleeve, a second spring disposed between the locking sleeve and the release pin, and a third spring disposed between the locking sleeve and the impact head.
[0011] The impact head includes an impact head sleeve, a locking head disposed on the top of the impact head sleeve, a firing pin axially slidably positioned in the inner cavity of the impact head sleeve, a fourth spring disposed between the locking head and the firing pin, and ink disposed between the impact head sleeve and the firing pin.
[0012] The front end of the measuring tape is fixed to the locking sleeve.
[0013] The zero mark on the measuring tape is the center of the impact firing pin.
[0014] The tape measure is arranged horizontally.
[0015] The working principle of this utility model is as follows:
[0016] A measuring tape and an impact pin are added to the existing ultrasonic probe. The added components do not affect the original detection performance of the probe. The tape is connected to the impact pin. The main function of the impact pin is to create a pit about 0.3 mm deep on the weld surface. At the same time, the ink on the impact pin flows into the pit for marking. When the impact pin is removed, the tape is pulled out for length measurement. In this way, the horizontal distance of the defect can be measured according to the value displayed by the ultrasonic flaw detector, and the defect location can be marked on the weld surface.
[0017] The beneficial effects of this utility model are:
[0018] The novel ultrasonic testing probe provided by this utility model has a built-in measuring tape and marking function, which can greatly facilitate ultrasonic testing personnel to measure and mark weld defects. It solves the problem of difficulty in locating and marking defects on site. It has the characteristics of high integration, simple operation, easy portability, fast measurement speed and accurate defect location. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main structure of this utility model.
[0020] Figure 2 This is a top view of the structure of this utility model.
[0021] Figure 3This is a cross-sectional structural diagram of the impact firing pin of this utility model.
[0022] Figure 4 This is a cross-sectional structural diagram of the main sleeve and sliding sleeve of this utility model.
[0023] Figure 5 This is a cross-sectional structural diagram of the locking sleeve, guide sleeve, and elastic buckle of this utility model.
[0024] Figure 6 This is a schematic diagram of the main structure of the elastic buckle of this utility model.
[0025] Figure 7 This is a cross-sectional structural diagram of the release top column of this utility model.
[0026] Figure 8 This is a cross-sectional structural diagram of the impact head of this utility model.
[0027] Figure 9 This is a schematic diagram illustrating how this utility model is used.
[0028] Figure 10 This is one of the schematic diagrams illustrating the working principle of the impact firing pin of this utility model.
[0029] Figure 11 This is the second schematic diagram of the working principle of the impact firing pin of this utility model.
[0030] Figure label:
[0031] 1. Probe body, 1-1 first slot, 1-2 second slot, 2. Measuring tape, 2-1 tape, 2-2 ruler box, 3. Impact pin, 3-1 end cap, 3-11 lock head, 3-11-1 conical head, 3-11-2 connecting rod, 3-11-3 base, 3-11-3 impact head sleeve, 3-13 ink, 3-14 impact pin, 3-15 fixing groove, 3-16 button, 3-2 first spring, 3-21 second spring, 3-22 third spring, 3-23 fourth spring, 3-24 release top post, 3-3 first limiting structure, 3-31 second limiting structure, 3-32 locking sleeve, 3-4 guide sleeve, 3-5 sliding sleeve, 3-6 main sleeve, 3-7 elastic buckle, 3-8 upper claw hook, 3-8-1 lower claw hook, 3-8-2 inner recess, 3-8-3 clamping ring, 3-9. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.
[0033] This utility model relates to an ultrasonic probe with a built-in measurement and positioning device. When manually ultrasonically inspecting weld defects, the horizontal distance from the defect to the probe can be easily measured using the tape measure built into the probe, and the defect location can be marked on the metal weld using the impact pin built into the probe.
[0034] like Figure 1 As shown, an ultrasonic probe with a built-in measurement and positioning device includes a probe body 1, a measuring tape 2, and an impact pin 3.
[0035] The structure of the probe body 1 is consistent with the prior art, with the measuring tape and impact pin located at the front end of the probe body. Figure 1 (Right side). The structure of the measuring tape is consistent with the prior art. The measuring tape is a miniature steel measuring tape, that is, a miniaturized ordinary steel measuring tape, with a maximum measuring length of 10 centimeters. The measuring tape includes a measuring box 2-2 and a measuring tape 2-1.
[0036] like Figure 1 and Figure 2 As shown, the front end of the probe body has a first slot 1-1 and a second slot 1-2. The measuring tape is installed in the first slot, the tape holder is fixed to the probe body, and the tape is fixed to the impact pin. The second slot is located to the right of the first slot, forming a vertically extending opening at the front end of the probe body. The tape's spool is horizontally arranged, and the tape unfolds horizontally when pulled out. The starting graduation of the tape is half the side length of the locking sleeve of the impact pin (the locking sleeve has a square cross-section), therefore the center position of the impact pin is the 0 graduation of the tape.
[0037] When measurement and positioning are required, the impact pin is directly removed from the probe body, the tape measure is pulled out, and after the measurement is completed, the impact pin is stored in the second slot, and the tape measure is automatically retracted.
[0038] The impact pin includes a main sleeve 3-7, an impact head, a locking sleeve 3-4, an elastic buckle 3-8, a release pin 3-3, a first spring 3-21, a second spring 3-22, and a third spring 3-23.
[0039] The main sleeve is a cylindrical sleeve. The impact head is axially slidably positioned at the bottom of the inner cavity of the main sleeve. The locking sleeve is a cuboid sleeve (with a square cross-section). The locking sleeve is axially slidably positioned outside the top of the main sleeve. The front end of the measuring tape is fixed to the locking sleeve, and the outer wall of the locking sleeve is provided with a fixing groove 3-16 for connecting the measuring tape.
[0040] The top of the main sleeve 3-7 is connected to the sliding sleeve 3-6 via a threaded structure. The top of the locking sleeve 3-4 is connected to the end cap 3-1 via a threaded structure. The bottom surface of the end cap is connected to the downwardly extending guide sleeve 3-5 via a threaded structure. The guide sleeve passes downward through the sliding sleeve 3-6 and extends into the inner cavity of the main sleeve. The bottom end of the guide sleeve is provided with an elastic buckle 3-8.
[0041] like Figure 6 As shown, the elastic buckle has six upper claw hooks 3-8-1 at the top and four lower claw hooks 3-8-2 at the bottom. The top of the upper claw hooks is bent outwards, and the upper claw hooks 3-8-1 are arranged in the grooves on the outer circular surface of the guide sleeve 3-5 (the grooves extend along the generatrix of the sliding sleeve, omitted in the figure). The clamping ring 3-9 clamps and fixes the upper claw hooks to the guide sleeve by engaging with the outer wall thread of the guide sleeve 3-5 through the inner wall thread (the grooves on the outer wall of the guide sleeve are threaded). The bottom of the lower claw hooks is bent inwards, and the middle of the lower claw hooks has an inward recess 3-8-3.
[0042] The release pin 3-3 is axially slidably positioned within the main sleeve and the locking sleeve. The release pin passes through the end cap and guide sleeve from top to bottom and then extends into the elastic buckle. A button 3-2 is located at the top of the release pin, protruding upwards from the top surface of the end cap. The bottom of the release pin is a truncated cone, wider at the top and narrower at the bottom. Pressing the button causes the release pin to move downwards, and the truncated cone presses against the indentation of the lower claw hook, causing the lower claw hook to open (allowing for the release of the impact head for impact). Releasing the button causes the release pin to move upwards, and the lower claw hook to retract.
[0043] A first spring 3-21 is provided between the locking sleeve and the main sleeve. The first spring is sleeved on the guide sleeve and its two ends abut against the end cap and the sliding sleeve. A second spring 3-22 is provided between the locking sleeve and the release pin. The second spring is sleeved on the release pin and its two ends abut against the button and the guide sleeve. A third spring 3-23 is provided between the guide sleeve and the impact head.
[0044] A first limiting structure 3-31 for controlling the sliding stroke is provided between the outer wall of the locking sleeve and the end of the sliding sleeve. A second limiting structure 3-32 for controlling the sliding stroke is provided between the outer wall of the guide sleeve and the bottom surface of the sliding sleeve.
[0045] The impact head includes an impact head sleeve 3-13, a locking head 3-11, a firing pin 3-15, a fourth spring 3-24, and an ink cartridge 3-14. The impact head sleeve is a sleeve that is wider at the top and narrower at the bottom. The locking head is located at the top of the impact head sleeve and includes a base 3-11-3 fixed to the impact head sleeve by a threaded structure and a conical head 3-11-1 fixed to the base by a connecting rod 3-11-2. When the release pin moves downward, the conical head guides the lower claw hook to open outward. After the conical head is fully inserted into the lower claw hook, the lower claw hook returns to its original position and hooks the conical head.
[0046] The firing pin is axially slidably positioned within the inner cavity of the impact head sleeve. The fourth spring is positioned between the base and the firing pin. A certain gap is maintained between the firing pin and the impact head sleeve for ink filling. Under the action of the fourth spring, the tip of the firing pin extends a certain length from the bottom opening of the impact head sleeve and blocks the opening to prevent ink leakage. Upon impact, a small amount of ink seeps out due to the loosening of the firing pin.
[0047] The operating steps of this utility model are as follows:
[0048] 1. The initial state of the impact firing pin is as follows: Figure 3 As shown;
[0049] 2. After ultrasonic flaw detection, pull the impact pin horizontally by hand. The extension length of the measuring tape is the horizontal distance of the reflected wave displayed by the ultrasonic flaw detector.
[0050] 3. Place the bottom end of the impact pin against the workpiece (weld surface), press the locking sleeve with your thumb, and move the locking sleeve downwards so that the elastic buckle hooks onto the impact head. Figure 10 (As shown), the third spring is compressed;
[0051] 4. Release your thumb; the first spring pushes the locking sleeve upward to reset, and the impact head is lifted upward. Figure 11 (as shown);
[0052] 5. Press the button with your thumb to release the top column and move it down, causing the elastic buckle to open and release the impact head. Under the action of the third spring, the impact head moves downward instantly. The workpiece is impacted by the impact head and a dent is created. During the impact, due to the loosening of the impact pin, a small amount of ink seeps out and remains in the dent. Therefore, positioning, dotting and marking are completed in one go.
[0053] 6. After the ink runs out, the various parts of this utility model can be disassembled through the threaded structure to add ink.
[0054] The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.
Claims
1. An ultrasonic probe with a built-in measurement and positioning device, comprising a probe body (1), characterized in that: It also includes a measuring tape (2) and an impact striker (3); the measuring tape's housing is fixed to the probe body; the measuring tape's tape is fixed to the impact striker.
2. The ultrasonic probe with integrated measurement and positioning device according to claim 1, characterized in that: The measuring tape and the impact pin are located at the front of the probe body; the impact pin is arranged vertically; the probe body is provided with a first slot (1-1) for mounting the measuring tape and a second slot (1-2) for receiving the impact pin.
3. An ultrasonic probe with a built-in measurement and positioning device according to claim 2, characterized in that: The impact pin includes a main sleeve (3-7), an impact head that can be axially slidably positioned at the bottom of the inner cavity of the main sleeve, a locking sleeve (3-4) that can be axially slidably positioned outside the top of the main sleeve, an elastic buckle (3-8) that is fixed to the locking sleeve and disposed in the inner cavity of the main sleeve, and a release pin (3-3) that passes through the locking sleeve from top to bottom and extends into the elastic buckle.
4. An ultrasonic probe with a built-in measurement and positioning device according to claim 3, characterized in that: The impact striker also includes a first spring (3-21) disposed between the upper locking sleeve and the main sleeve, a second spring (3-22) disposed between the upper locking sleeve and the release top post, and a third spring (3-23) disposed between the upper locking sleeve and the impact head.
5. An ultrasonic probe with a built-in measurement and positioning device according to claim 4, characterized in that: The impact head includes an impact head sleeve (3-13), a locking head (3-11) disposed on the top of the impact head sleeve, a firing pin (3-15) axially slidably positioned in the inner cavity of the impact head sleeve, a fourth spring (3-24) disposed between the locking head and the firing pin, and ink (3-14) disposed between the impact head sleeve and the firing pin.
6. An ultrasonic probe with a built-in measurement and positioning device according to claim 5, characterized in that: The front end of the measuring tape is fixed to the locking sleeve.
7. An ultrasonic probe with a built-in measurement and positioning device according to claim 6, characterized in that: The zero mark on the measuring tape is the center of the impact firing pin.
8. An ultrasonic probe with a built-in measurement and positioning device according to claim 7, characterized in that: The tape measure is arranged horizontally.