A weld strength detection device

Abstract

The utility model relates to a kind of weld joint strength detection devices, involve the field of weld joint detection, it includes fixed mechanism and moving mechanism, the fixed mechanism includes fixed frame and magnet plate, the magnet plate is provided with multiple, the magnet plate is fixedly installed with multiple in the both ends of the fixed frame, the fixed frame side is equipped with sliding slot, the opening distance of the sliding slot is less than the distance of the both ends of the sliding slot bottom surface;The moving mechanism includes sliding frame, the sliding frame is slidably arranged on the fixed frame by the sliding slot, the sliding frame is equipped with mounting port, the mounting port in the sliding frame is connected with detection head.

Description

Technical Field

[0001] This utility model relates to the field of weld inspection, and in particular to a weld strength testing device. Background Technology

[0002] Against the backdrop of the booming development of the construction industry, earthquakes pose a serious threat to building safety. This is especially true in areas with particularly high seismic fortification intensity, where building safety is paramount. In actual construction, the welding quality of steel structures directly affects the mechanical properties of joints. Improper welding processes can easily lead to defects such as porosity, slag inclusions, and cracks, thereby weakening the load-bearing capacity of the joints. Therefore, ensuring high-quality welded joints is one of the key aspects of improving the overall seismic performance of the structure.

[0003] Currently, a Chinese utility model patent with publication number CN223139481U and publication date of July 22, 2025, proposes a welding seam inspection machine for steel structures. It adopts a combination structure of a placement plate, a top plate, a moving plate, a moving groove, a pull rod, a pull plate, an inspection head, a spring, a connecting frame, a toothed plate, and a gear. By rotating the gear and the control disc, the inspection head can move back and forth. Combined with the use of a screw and a throttle, the inspection head can move left and right, adapting to welds of different lengths and widths.

[0004] Regarding the aforementioned technologies, during testing, the steel plate to be tested needs to be placed on a placement plate and then adjusted and moved for testing. However, due to the limitations of the welding environment for steel structures, when dealing with the testing of steel structures already welded to designated positions, such as the testing of welds on vertical or horizontal beams, which are mostly long strip welds, the aforementioned devices are difficult to complete the corresponding testing. Workers can only use the primitive method of hand-held testing, which increases the testing error and affects the accuracy of the test results. Utility Model Content

[0005] In order to improve the detection accuracy of weld strength testing devices, this utility model provides a weld strength testing device.

[0006] This utility model provides a weld strength testing device, which adopts the following technical solution: A weld strength testing device includes a fixing mechanism and a moving mechanism. The fixing mechanism includes a fixing frame and a magnetic plate. Multiple magnetic plates are provided. Multiple magnetic plates are fixedly installed at both ends of the fixing frame. A sliding groove is provided on one side of the fixing frame. The opening distance of the sliding groove is smaller than the distance between the two ends of the bottom surface of the sliding groove. The moving mechanism includes a sliding frame, which is slidably mounted on the fixed frame via the sliding groove. The sliding frame has an installation port, and a detection head is engaged in the installation port.

[0007] Preferably, the moving mechanism further includes an adjusting frame, one end of which is fixedly mounted with a first slider, the first slider sliding in the sliding groove along a first direction, and the sliding frame slidingly mounted on the adjusting frame along a second direction.

[0008] Preferably, the moving mechanism further includes a guide plate, which is slidably mounted on the adjusting frame, and the bottom end of the guide plate is slidably connected to the top end of the sliding frame.

[0009] Preferably, the moving mechanism further includes a first locking rod, which is threadedly connected to the adjusting frame, and one end of the first locking rod abuts against the sliding frame.

[0010] Preferably, the moving mechanism further includes an adjusting plate and an adjusting rod. The adjusting plate is slidably mounted on the sliding frame and is located within the mounting opening. The adjusting rod is threaded onto the sliding frame, with one end connected to the adjusting plate. The adjusting plate abuts against the detection head.

[0011] Preferably, the sliding frame is provided with a first scale.

[0012] Preferably, a handle ring is fixedly installed at the top of the sliding frame.

[0013] Preferably, the fixing frame includes a first rod, an intermediate rod, and a second rod. The intermediate rod is fixedly installed at one end of the second rod, and the intermediate rod is slidably disposed inside the first rod. The sliding groove is formed on the same side of the first rod, the intermediate rod, and the second rod.

[0014] Preferably, the fixing mechanism further includes a second locking rod, which is threadedly connected to the first rod and abuts against the intermediate rod.

[0015] Preferably, a second scale is provided on the same side of the first rod, the intermediate rod, and the second rod.

[0016] In summary, this utility model has at least one of the following beneficial technical effects: 1. By pushing the sliding frame and sliding it along the first direction, the movement accuracy of the detection head is improved and the detection error is reduced. At the same time, the device is easy to install and improves the flexibility of use. It can realize directional detection at vertical or horizontal or other welded steel structure welds, which makes it convenient for staff to record or mark abnormal positions.

[0017] 2. Achieve precise coverage of any position on the weld by the detection head; during the movement along the first direction, the detection head can be moved along the second direction at abnormal points based on the feedback from the ultrasonic detector to find the upper and lower widths of the weld and mark the corresponding positions. Then, the length of the weld is measured by moving along the first direction, and then the detection head is moved along the second direction to measure the width of the weld at the end, which improves the detection range and is suitable for strength scanning of bent welds or joint areas.

[0018] 3. When fixing the detection head, the adjusting plate is pressed against the detection head by rotating the adjusting rod, which improves the stability of fixing the detection head. At the same time, it can be adjusted according to the size of the detection head, which facilitates installation and improves adaptability. It can adjust the fixed distance between the detection head and the detection surface to adapt to different detection environments.

[0019] 4. In different testing environments, the distance between the first and second rods can be adjusted according to the testing length to adapt to the corresponding testing length. The distance can be shortened or lengthened to allow the device to be placed in the testing position, thus improving the flexibility of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 yes Figure 1 A diagram from another perspective; Figure 3 This is a partial schematic diagram of the moving mechanism; Figure 4 yes Figure 3 Cross-sectional view along the AA direction; Figure 5 This is a diagram showing the second lever in its extended position.

[0021] Explanation of reference numerals in the attached drawings: 100, fixing mechanism; 110, fixing frame; 111, first rod; 112, intermediate rod; 113, second rod; 120, sliding groove; 130, magnetic plate; 140, second scale; 150, second locking rod; 200, moving mechanism; 210, sliding frame; 211, handle ring; 220, mounting port; 230, adjusting frame; 240, first slider; 250, guide plate; 260, first locking rod; 270, adjusting plate; 280, adjusting rod; 290, first scale; 300, detection head. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 To be continued Figure 5The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] Example 1: This utility model discloses a weld strength testing device. (Refer to...) Figure 1 and Figure 2 as well as Figure 4A weld strength testing device mainly includes a fixing mechanism 100 and a moving mechanism 200. The fixing mechanism 100 includes a fixing frame 110 and a magnet plate 130. Multiple magnet plates 130 are provided and fixedly installed at both ends of the fixing frame 110. Extension plates extend from both ends of the fixing frame 110 along a second direction, and a magnet plate 130 is fixed at each end of the extension plate. The magnet plate 130 can be a high-strength permanent magnet. A sliding groove 120 is provided on one side of the fixing frame 110, and the opening distance of the sliding groove 120 is smaller than the distance between the two ends of the bottom surface of the sliding groove 120. The moving mechanism 200 includes a sliding frame 210, which is slidably mounted on the fixing frame 110 through the sliding groove 120. An installation port 220 is provided on the sliding frame 210, and a detection head 300 is snapped into the installation port 220 of the sliding frame 210. The detection head 300 can be connected to an ultrasonic detection electrical signal through a wire.

[0028] Before testing, the ultrasonic testing head 300 is inserted into the mounting port 220. The mounting port 220 can be designed with an opening that is wider on the outside and narrower on the inside. The testing head 300 is mostly square or cubic in shape. After fixing the testing head 300, a coupling agent for testing is applied to the steel structure testing area. The fixing frame 110 is then attracted to the testing position of the steel structure using the magnetic plate 130, so that the length direction of the fixing frame 110 is the length direction of the weld of the steel structure. Under the guidance of the sliding groove 120, the operator can then slide the sliding frame 210 along the first direction, which improves the movement accuracy of the testing head 300 and reduces the testing error. At the same time, the device is easy to install and improves the flexibility of use. It can realize directional testing at vertical or horizontal or other already welded steel structure weld positions, making it convenient for operators to record or mark abnormal positions.

[0029] Reference Figure 1 and Figure 2In some embodiments, the moving mechanism 200 further includes an adjusting frame 230, one end of which is fixedly mounted with a first slider 240. The first slider 240 slides within the sliding groove 120 along a first direction, and a sliding frame 210 is slidably mounted on the adjusting frame 230 along a second direction. A ball bearing can be provided between the first slider 240 and the sliding groove 120 to facilitate sliding. This allows the sliding frame 210 to slide along the second direction (Y-axis), the first slider 240 to move along the first direction (X-axis), and the detection head 300 to move within a two-dimensional detection plane, achieving precise coverage of any position of the weld by the detection head 300. During movement along the first direction, based on feedback from the ultrasonic detector, the detection head 300 can be moved along the second direction at abnormal points to determine the upper and lower widths of the weld and mark the corresponding positions. Then, the length of the weld is measured by moving along the first direction, and then the width of the weld at the end is measured by moving the detection head 300 along the second direction, thus improving the detection range and making it suitable for strength scanning of bent welds or joint areas.

[0030] Reference Figure 1 and Figure 2 In some embodiments, the moving mechanism 200 further includes a guide plate 250, which is slidably mounted on the adjusting frame 230. The bottom end of the guide plate 250 is slidably connected to the top end of the sliding frame 210. Using the guide plate 250, the sliding frame 210 can be removed from the adjusting frame 230 to facilitate fixing the detection head 300. Then, the sliding frame 210 can be reinstalled on the adjusting frame 230, and the guide plate 250 can be reinserted into the designated position of the adjusting frame 230. The bottom of the guide plate 250 blocks and limits the top end of the sliding frame 210, thereby preventing the sliding frame 210 from detaching from the adjusting frame 230 and providing a certain degree of guidance for the sliding frame 210.

[0031] Reference Figure 1 and Figure 2 In some embodiments, the moving mechanism 200 further includes a first locking rod 260, which is threadedly connected to the adjusting frame 230. One end of the first locking rod 260 abuts against the sliding frame 210. By utilizing the first locking rod 260, when the sliding frame 210 moves to a suitable position, rotating the first locking rod 260 causes it to abut against the sliding frame 210, locking the sliding frame 210 in the corresponding position of the adjusting frame 230. This allows the detection head 300 to move along the first direction from a designated position in the second direction, improving detection accuracy.

[0032] Reference Figure 1 and Figure 2 as well as Figure 4In some embodiments, the moving mechanism 200 further includes an adjusting plate 270 and an adjusting rod 280. The adjusting plate 270 is slidably mounted on the sliding frame 210 and is located within the mounting opening 220. The adjusting rod 280 is threadedly connected to the sliding frame 210, with one end connected to the adjusting plate 270. The adjusting plate 270 abuts against the detection head 300. When fixing the detection head 300, rotating the adjusting rod 280 causes the adjusting plate 270 to abut against the detection head 300, improving the stability of fixing the detection head 300. Simultaneously, it allows for adjustment according to the size of the detection head 300, facilitating installation and improving adaptability. It also allows adjustment of the fixed distance between the detection head 300 and the detection surface, adapting to different detection environments.

[0033] Reference Figure 1 and Figure 2 In some embodiments, the sliding frame 210 is provided with a first scale 290. By using the first scale, the width and distance of defects in the weld can be quickly read, eliminating the need for workers to measure with a ruler again, making the inspection process more convenient.

[0034] Reference Figure 1 and Figure 2 In some embodiments, a handle ring 211 is fixedly installed at the top of the sliding frame 210. The handle ring 211 supports one-handed operation, or a rod can be used to insert the handle ring 211 to move the sliding frame 210 or the adjusting plate 270 in a first or second direction, which can adapt to the high-altitude working environment in the construction area.

[0035] Example 2: This utility model discloses a weld strength testing device. (Refer to...) Figures 3 to 5 The main difference between this example and Embodiment 1 is that the fixing frame 110 includes a first rod 111, an intermediate rod 112, and a second rod 113. The intermediate rod 112 is fixedly installed at one end of the second rod 113, and the intermediate rod 112 is slidably disposed within the first rod 111. A sliding groove 120 is provided on the same side of the first rod 111, the intermediate rod 112, and the second rod 113. In different detection environments, the distance between the first rod 111 and the second rod 113 can be adjusted according to the detection length to adapt to the corresponding detection length. It can be shortened or lengthened to allow the device to be placed in the detection position, improving the flexibility of the device.

[0036] Reference Figures 3 to 5In some embodiments, the fixing mechanism 100 further includes a second locking rod 150, which is threadedly connected to the first rod 111 and abuts against the intermediate rod 112. When the appropriate detection distance is adjusted, rotating the second locking rod 150 causes it to abut against the intermediate rod 112, locking the first rod 111 and the intermediate rod 112, thus locking the distance between the first rod 111 and the second rod 113 and preventing deviation during the sliding measurement process.

[0037] Reference Figure 1 In some embodiments, a second scale 140 is provided on the same side of the first rod 111, the intermediate rod 112, and the second rod 113. Using the second scale 140, workers can read the length of the crack in the weld, eliminating the need for workers to use a measuring ruler.

[0038] The implementation principle of the weld strength testing device according to this utility model embodiment is as follows: Through the coordinated design of the sliding frame 210 and the telescopic fixing mechanism 100, the detection head 300 can move along the first and second directions on the weld surface. This not only improves the coverage detection capability of vertical, horizontal and complex node welds, but also allows for quick determination of the length and width of problem points through the positioning of the first scale 290 and the second scale 140. At the same time, the pressure adaptive mechanism of the detection head 300 driven by the adjusting rod 280 ensures stable contact between probes of different sizes and the weld surface, avoiding damage to the workpiece. Combined with the telescopic fixing frame 110 structure, it can flexibly adapt to components of different spans, significantly enhancing the applicability and ease of operation of the device in complex construction environments, and providing real-time, non-destructive strength testing support for the quality control of seismic construction of steel structures.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A weld strength testing device, characterized in that: It includes a fixing mechanism (100) and a moving mechanism (200). The fixing mechanism (100) includes a fixing frame (110) and a magnet plate (130). Multiple magnet plates (130) are provided. Multiple magnet plates (130) are fixedly installed at both ends of the fixing frame (110). A sliding groove (120) is opened on one side of the fixing frame (110). The opening distance of the sliding groove (120) is smaller than the distance between the two ends of the bottom surface of the sliding groove (120). The moving mechanism (200) includes a sliding frame (210), which is slidably mounted on the fixed frame (110) via the sliding groove (120). The sliding frame (210) has an installation port (220), and a detection head (300) is engaged in the installation port (220) of the sliding frame (210).

2. The weld strength testing device according to claim 1, characterized in that: The moving mechanism (200) further includes an adjusting frame (230), one end of which is fixedly mounted with a first slider (240). The first slider (240) slides in the sliding groove (120) along a first direction, and the sliding frame (210) is slidably mounted on the adjusting frame (230) along a second direction.

3. The weld strength testing device according to claim 2, characterized in that: The moving mechanism (200) also includes a guide plate (250), which is slidably mounted on the adjusting frame (230), and the bottom end of the guide plate (250) is slidably connected to the top end of the sliding frame (210).

4. The weld strength testing device according to claim 3, characterized in that: The moving mechanism (200) further includes a first locking rod (260), which is threadedly connected to the adjusting frame (230), and one end of the first locking rod (260) abuts against the sliding frame (210).

5. The weld strength testing device according to claim 4, characterized in that: The moving mechanism (200) further includes an adjusting plate (270) and an adjusting rod (280). The adjusting plate (270) is slidably mounted on the sliding frame (210). The adjusting plate (270) is inside the mounting port (220). The adjusting rod (280) is threadedly connected to the sliding frame (210). One end of the adjusting rod (280) is connected to the adjusting plate (270). The adjusting plate (270) abuts against the detection head (300).

6. The weld strength testing device according to claim 1, characterized in that: The sliding frame (210) is provided with a first scale (290).

7. The weld strength testing device according to claim 1, characterized in that: A handle (211) is fixedly installed at the top of the sliding frame (210).

8. The weld strength testing device according to any one of claims 1-7, characterized in that: The fixing frame (110) includes a first rod (111), an intermediate rod (112), and a second rod (113). The intermediate rod (112) is fixedly installed at one end of the second rod (113). The intermediate rod (112) is slidably disposed in the first rod (111). The sliding groove (120) is provided on the same side of the first rod (111), the intermediate rod (112), and the second rod (113).

9. The weld strength testing device according to claim 8, characterized in that: The fixing mechanism (100) further includes a second locking rod (150), which is threadedly connected to the first rod (111) and abuts against the intermediate rod (112).

10. The weld strength testing device according to claim 9, characterized in that: A second scale (140) is provided on the same side of the first rod (111), the intermediate rod (112), and the second rod (113).

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