Reducing scanning device for welding seam of arm support shaft sleeve

Abstract

The utility model relates to the technical field of weld joint detection, in particular to a variable-diameter scanning device for a cantilever crane shaft sleeve weld joint. The variable-diameter scanning device for the arm support shaft sleeve welding seam comprises a sleeve, an operating piece, a supporting piece, a detecting piece and at least one adjusting assembly, and part of the supporting piece extends out of the sleeve to form a supporting section. The detection piece is arranged on the supporting section, and the operation piece is inserted into the supporting piece through the sleeve. The adjusting assembly comprises an adjusting piece and a first connecting piece, the adjusting piece is arranged on the supporting section, and the adjusting piece is used for abutting against the inner wall of the boom shaft sleeve to be tested. The two ends of the first connecting piece are rotationally connected with the sleeve and the adjusting piece correspondingly, the operating piece drives one of the sleeve and the supporting section to move relative to the other one, and the distance between the adjusting piece and the supporting section is adjusted through the first connecting piece. The variable-diameter scanning device for the arm support shaft sleeve welding seam is convenient to operate, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of weld inspection technology, and in particular to a variable diameter scanning device for boom bushing welds. Background Technology

[0002] The boom of a concrete pump truck is a telescopic and rotatable mechanical structure mounted on the truck. Boom bushings are typically installed at the joints of the boom, connecting and supporting the various boom segments. After welding, the inner weld seams of the boom bushings need to be inspected using a weld inspection device.

[0003] In existing technologies, endoscopes are typically inserted into the arm bushing for visual inspection. To ensure the imaging quality of the endoscope, the viewing angle and light source need to be adjusted during the inspection, which is inconvenient and results in low inspection efficiency. Utility Model Content

[0004] This application provides a variable diameter scanning device for boom bushing welds, which is easy to operate and improves inspection efficiency.

[0005] The boom bushing weld diameter changing scanning device provided in this application includes: a sleeve, an operating component, a support component, a detection component, and at least one adjusting assembly. The support component is inserted into the sleeve, with a portion extending out of the sleeve to form a support section. The detection component is disposed on the support section and is used to detect the inner wall weld of the boom bushing to be tested. The operating component is inserted into the support component via the sleeve.

[0006] The adjustment assembly includes an adjustment member and a first connecting member. The adjustment member is disposed on the support section and is used to abut against the inner wall of the bushing of the boom to be tested. The two ends of the first connecting member are rotatably connected to the sleeve and the adjustment member, respectively. An operating member drives one of the sleeve and the support section to move relative to the other, so as to adjust the distance between the adjustment member and the support section through the first connecting member.

[0007] In one possible implementation, the boom bushing weld diameter scanning device provided in this application has an external thread on the operating member and an internal thread on the sleeve that matches the external thread. The external thread and the internal thread are connected, and the operating member drives the sleeve to move relative to the support section through the external thread.

[0008] In one possible implementation, the boom bushing weld diameter scanning device provided in this application further includes an elastic element, which is sleeved on the operating element, with its two ends abutting against the sleeve and the support element, respectively.

[0009] In one possible implementation, the boom bushing weld diameter scanning device provided in this application further includes a limiting part on the operating component, which abuts against the support component to restrict the support component on the operating component.

[0010] In one possible implementation, the boom bushing weld diameter scanning device provided in this application has a slot inside the adjusting component, and the adjusting component also includes a second connecting member, one end of which is connected to the support section, and the other end of which is inserted into the slot.

[0011] In one possible implementation, the boom bushing weld diameter scanning device provided in this application has a first protrusion in the slot and a second protrusion on the second connector. The first protrusion abuts against the second protrusion to restrict the adjusting member on the second connector.

[0012] In one possible implementation, the variable diameter scanning device for boom bushing weld seams provided in this application has a connecting part on the sleeve, and a first connecting member is rotatably connected to the sleeve through the connecting part.

[0013] In one possible implementation, the boom bushing weld diameter scanning device provided in this application has an abutment part on the support member, which abuts or disengages from the connecting part.

[0014] In one possible implementation, the variable diameter scanning device for boom bushing weld seams provided in this application further includes a limiting ring, which is sleeved on the sleeve and located between the operating member and the adjusting member. The limiting ring is used to abut against the outer surface of the boom bushing to be tested.

[0015] In one possible implementation, the boom bushing weld diameter scanning device provided in this application has a limiting groove on the sleeve and a locking element on the limiting ring. The locking element is engaged in the limiting groove to restrict the limiting ring on the sleeve.

[0016] The variable diameter scanning device for boom bushing welds provided in this application comprises a sleeve, an operating component, a support component, a detection component, and at least one adjusting assembly. The support component is inserted into the sleeve, with a portion extending out of the sleeve to form a support section. The detection component is positioned on the support section and is used to inspect the inner wall weld of the boom bushing under test, thus improving inspection efficiency.

[0017] The operating component is inserted into the support component via a sleeve. The adjustment assembly includes an adjusting component and a first connecting component. The adjusting component is used to abut against the inner wall of the boom bushing to be tested. When the operating component drives one of the sleeve and the support section to move relative to the other, since both ends of the first connecting component are rotatably connected to the sleeve and the adjusting component respectively, and the adjusting component is located on the support section, the first connecting component can rotate relative to the sleeve, thereby driving the adjusting component to move towards or away from the support section. This adjusts the distance between the adjusting component and the support section, allowing the adjusting component and the testing component to abut against the inner walls of boom bushings with different inner diameters, thus enabling the inspection of the weld seams on the inner walls of boom bushings with different inner diameters. The boom bushing weld seam variable diameter scanning device provided in this application is easy to operate and improves inspection efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the variable diameter scanning device for boom bushing weld seams provided in an embodiment of this application;

[0020] Figure 2 for Figure 1 Internal structure diagram;

[0021] Figure 3 for Figure 1 A structural diagram from another angle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100 - Sleeve; 110 - Connecting part; 120 - Internal thread; 130 - Limiting groove;

[0024] 200 - Operating element; 210 - External thread; 220 - Limiting part;

[0025] 300 - Support component; 310 - Support section; 320 - Abutment part;

[0026] 400 - Test piece; 410 - Ultrasonic probe; 420 - Wedge block;

[0027] 500-Adjustment component;

[0028] 510 - Adjustment component; 511 - Slot; 512 - First protrusion;

[0029] 520 - First connector;

[0030] 530 - Second connector; 531 - Second protrusion;

[0031] 600 - Elastic component;

[0032] 700 - Limiting ring; 710 - Locking element.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0035] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] As the background section illustrates, in existing technologies, an endoscope is typically inserted into the arm's bushing for visual inspection. To ensure the image quality of the endoscope, the viewing angle and light source need to be adjusted during the inspection, which is inconvenient and results in low inspection efficiency.

[0039] Based on this, the variable diameter scanning device for boom bushing welds provided in this application comprises a sleeve, an operating component, a support component, a detection component, and at least one adjusting component. The support component is inserted into the sleeve, with a portion extending out of the sleeve to form a support section. The detection component is disposed on the support section and is used to detect the inner wall weld of the boom bushing under test, thereby improving detection efficiency.

[0040] The operating component is inserted into the support component via a sleeve. The adjustment assembly includes an adjusting component and a first connecting component. The adjusting component is used to abut against the inner wall of the boom bushing to be tested. When the operating component drives one of the sleeve and the support section to move relative to the other, since both ends of the first connecting component are rotatably connected to the sleeve and the adjusting component respectively, and the adjusting component is located on the support section, the first connecting component can rotate relative to the sleeve, thereby driving the adjusting component to move towards or away from the support section. This adjusts the distance between the adjusting component and the support section, allowing the adjusting component and the testing component to abut against the inner walls of boom bushings with different inner diameters, thus enabling the inspection of the weld seams on the inner walls of boom bushings with different inner diameters. The boom bushing weld seam variable diameter scanning device provided in this application is easy to operate and improves inspection efficiency.

[0041] It should be noted that the variable diameter scanning device for boom bushing weld seam provided in this application embodiment is used to detect the inner wall weld seam of boom bushing. The boom bushing is a component installed at the joint of the boom and is used to connect and support the various segments of the boom. The boom includes, but is not limited to, the booms of heavy machinery such as pump trucks, cranes and excavators.

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0043] Reference Figures 1 to 3 As shown, the boom bushing weld diameter changing scanning device provided in this application includes: a sleeve 100, an operating member 200, a support member 300, a detection member 400, and at least one adjusting assembly 500. The support member 300 is inserted into the sleeve 100, with a portion of the support member 300 extending out of the sleeve 100 to form a support section 310. The detection member 400 is disposed on the support section 310 and is used to detect the inner wall weld of the boom bushing to be tested. The operating member 200 is inserted into the support member 300 via the sleeve 100.

[0044] The adjustment assembly 500 includes an adjustment member 510 and a first connecting member 520. The adjustment member 510 is disposed on the support section 310 and is used to abut against the inner wall of the bushing of the boom to be tested. The two ends of the first connecting member 520 are rotatably connected to the sleeve 100 and the adjustment member 510, respectively. The operating member 200 drives one of the sleeve 100 and the support section 310 to move relative to the other, so as to adjust the distance between the adjustment member 510 and the support section 310 through the first connecting member 520.

[0045] It should also be noted that the testing component 400 is used to detect the weld seam on the inner wall of the boom bushing under test. The testing component 400 may include an ultrasonic probe 410 and a wedge block 420. The ultrasonic probe 410 is disposed inside the support section 310. The wedge block 420 is connected to the support section 310. The inner side of the wedge block 420 is connected to the ultrasonic probe 410. The outer side of the wedge block 420 extends out of the support section 310. The outer side of the wedge block 420 is arc-shaped and fits against the inner wall of the boom bushing under test. The ultrasonic probe 410 detects the weld seam on the inner wall of the boom bushing under test through the wedge block 420, which improves the detection efficiency.

[0046] The operating element 200 drives one of the sleeve 100 and the support section 310 to move relative to the other. In some embodiments, the operating element 200 may be inserted into the sleeve 100 and connected to the support section 300. The operating element 200 can push the support section 300 along... Figure 2 The movement in the positive direction of X, indicated by the middle arrow, means pushing the support segment 310 away from the sleeve 100, or the operation member 200 pulls the support member 300 in the opposite direction of X, that is, pulling the support segment 310 towards the sleeve 100. In some embodiments, the operation member 200 may also be threadedly connected to the sleeve 100. When the operation member 200 rotates relative to the sleeve 100 along its own axis, the operation member 200 can drive the sleeve 100 to move in the positive or negative direction of X, that is, drive the sleeve 100 towards or away from the support segment 310; as long as one of the sleeve 100 and the support segment 310 can move relative to the other, this application embodiment does not impose too many restrictions on this.

[0047] Specifically, when the operating element 200 drives the sleeve 100 to move in the opposite direction of X, the sleeve 100 gradually moves away from the support section 310. Since one end of the first connecting member 520 is connected to the sleeve 100, and the other end of the first connecting member 520 is connected to the support section 310 via the adjusting member 510, the distance between the sleeve 100 and the support section 310 increases, thereby causing the first connecting member 520 to move away from the support section 310. Figure 2 Rotating in the opposite direction of the middle arrow W (i.e., clockwise), the first connecting member 520 drives the adjusting member 510 along... Figure 2The movement in the opposite direction of the middle arrow Y, that is, the movement of the adjusting member 510 toward the support section 310, reduces the distance between the adjusting member 510 and the support section 310.

[0048] Next, as the operating element 200 drives the sleeve 100 to move in the positive X direction, the sleeve 100 gradually approaches the support section 310. Since one end of the first connecting member 520 is connected to the sleeve 100, and the other end of the first connecting member 520 is connected to the support section 310 via the adjusting member 510, the distance between the sleeve 100 and the support section 310 decreases, thereby allowing the first connecting member 520 to move along... Figure 2 Rotating in the positive direction (i.e., counterclockwise) of the middle arrow W, the first connecting member 520 drives the adjusting member 510 along... Figure 2 The movement in the positive direction of Y, indicated by the middle arrow, means that the adjusting member 510 moves away from the support section 310, increasing the distance between the adjusting member 510 and the support section 310.

[0049] Understandably, compared to existing technologies that use endoscopes inserted into the boom bushing for visual inspection, which is inconvenient and inefficient, the variable diameter scanning device for boom bushing welds provided in this application improves inspection efficiency. This device comprises a sleeve 100, an operating component 200, a support component 300, a detection component 400, and at least one adjusting component 500. The support component 300 is inserted into the sleeve 100, with a portion extending out to form a support section 310. The detection component 400 is positioned on the support section 310 and is used to inspect the inner wall welds of the boom bushing under test.

[0050] The operating component 200 is inserted into the support component 300 via the sleeve 100. The adjustment assembly 500 includes an adjustment component 510 and a first connecting component 520. The adjustment component 510 is used to abut against the inner wall of the boom bushing to be tested. When the operating component 200 drives one of the sleeve 100 and the support section 310 to move relative to the other, since the two ends of the first connecting component 520 are rotatably connected to the sleeve 100 and the adjustment component 510 respectively, and the adjustment component 510 is disposed on the support section 310, the first connecting component 520 can rotate relative to the sleeve 100, and drive the adjustment component 510 to move toward or away from the support section 310, thereby adjusting the distance between the adjustment component 510 and the support section 310, so that the adjustment component 510 and the detection component 400 can abut against the inner wall of the boom bushing to be tested with different inner diameters, thereby detecting the weld seam of the inner wall of the boom bushing to be tested with different inner diameters. The variable diameter scanning device for boom bushing welds provided in this application is easy to operate and improves inspection efficiency.

[0051] In some embodiments, refer to Figure 2As shown, the operating member 200 is provided with an external thread 210, and the sleeve 100 is provided with an internal thread 120 that matches the external thread 210. The external thread 210 is connected to the internal thread 120, and the operating member 200 drives the sleeve 100 to move relative to the support section 310 through the external thread 210.

[0052] Understandably, threaded connections can provide precise linear motion control. By rotating the operating member 200, the sleeve 100 can be driven to move relative to the support member 300, thereby changing the distance between the sleeve 100 and the support section 310, so that the first connecting member 520 drives the adjusting member 510 to move toward or away from the support section 310.

[0053] It should be noted that the threaded connection has a certain self-locking characteristic, which allows the sleeve 100 to maintain a stable position when no external force is applied, thereby maintaining the stability and consistency of the test.

[0054] In some embodiments, refer to Figure 2 As shown, the variable diameter scanning device for the boom bushing weld also includes an elastic element 600, which is sleeved on the operating element 200. The two ends of the elastic element 600 abut against the sleeve 100 and the support element 300, respectively.

[0055] It should be noted that the elastic element 600 provides a reaction force between the sleeve 100 and the support 300. When the operating element 200 rotates and drives the sleeve 100 to move away from the support 300, the elastic force of the elastic element 600 cancels out part of the force applied to the support 300, so that the support 300 remains relatively stationary, thereby realizing the movement of the sleeve 100 relative to the support 300.

[0056] In practice, the elastic element 600 can be preloaded during initial installation (i.e., it is already in a certain compressed state when it is not subjected to external force). This preload provides a continuous clamping force to help fix the position of the support element 300.

[0057] In some embodiments, refer to Figure 2 As shown, the operating member 200 is also provided with a limiting part 220, which abuts against the support member 300 to restrict the support member 300 on the operating member 200.

[0058] It should be noted that the limiting part 220 abuts against the support member 300, which can prevent the support member 300 from moving along... Figure 2 The support 300 is moved in the positive direction of X as indicated by the middle arrow to fix the support 300 to the operating member 200, thus preventing the support 300 from detaching from the operating member 200.

[0059] In some embodiments, refer to Figure 2As shown, the adjusting member 510 has a slot 511, and the adjusting assembly 500 also includes a second connector 530. One end of the second connector 530 is connected to the support section 310, and the other end of the second connector 530 is inserted into the slot 511.

[0060] Specifically, the connection between the adjusting member 510 and the support section 310 is achieved by providing the second connecting member 530. A slot 511 is provided within the adjusting member 510, and the second connecting member 530 is inserted into the slot 511. The adjusting member 510 can move relative to the second connecting member 530, meaning it can move closer to or further away from the support section 310, thereby changing the distance between the adjusting member 510 and the support section 310, so that the adjusting member 510 abuts against the inner wall of the boom bushing of different inner diameters. It should be noted that the second connecting member 530 and the slot 511 can be a clearance fit.

[0061] In some embodiments, refer to Figure 2 As shown, the slot 511 has a first protrusion 512, and the second connector 530 has a second protrusion 531. The first protrusion 512 abuts against the second protrusion 531 to restrict the adjusting member 510 on the second connector 530.

[0062] It should be noted that the first protrusion 512 abuts against the second protrusion 531, which limits the range of movement of the adjusting member 510 on the second connecting member 530, prevents the adjusting member 510 from moving excessively during operation, avoids the adjusting member 510 from disengaging from the second connecting member 530, and ensures the reliability of the adjusting member 510 during operation.

[0063] In some embodiments, refer to Figure 1 and Figure 2 As shown, the sleeve 100 has a connecting part 110, and the first connecting member 520 is rotatably connected to the sleeve 100 through the connecting part 110.

[0064] Understandably, by providing a connecting portion 110 on the sleeve 100, a connection position is provided for the first connecting member 520, enabling a rotatable connection between the first connecting member 520 and the sleeve 100. The first connecting member 520 can rotate relative to the sleeve 100 along... Figure 2 The middle arrow indicates that the component W rotates in the positive or negative direction, thereby causing the adjusting component 510 to move along... Figure 2 The distance between the adjusting member 510 and the support section 310 can be adjusted by moving the member in the positive or negative direction of Y as indicated by the middle arrow.

[0065] In specific implementation, the first connector 520 can be connected to the connector 110 via a pivot, or it can be connected in other ways. This application embodiment does not impose too many restrictions on this.

[0066] In some embodiments, refer to Figure 1 and Figure 2 As shown, the support section 310 has an abutment portion 320 on the side facing the sleeve 100, and the abutment portion 320 abuts against or disengages from the connecting portion 110.

[0067] Specifically, as the sleeve 100 moves toward the support section 310 until the abutting portion 320 abuts against the connecting portion 110 on the sleeve 100, the abutting portion 320 and the connecting portion 110 can restrict the sleeve 100 from moving further toward the support section 310, thereby preventing the support section 310 from extending into the sleeve 100. As the sleeve 100 moves away from the support section 310, the abutting portion 320 disengages from the connecting portion 110.

[0068] In some embodiments, refer to Figure 1 As shown, the variable diameter scanning device for boom bushing weld seam also includes a limiting ring 700, which is sleeved on the sleeve 100 and located between the operating member 200 and the adjusting member 510. The limiting ring 700 is used to abut against the outer surface of the boom bushing to be tested.

[0069] Understandably, the limiting ring 700 abuts against the outer surface of the boom bushing under test, limiting the depth to which the device can be inserted into the boom bushing under test, ensuring that the device remains within the preset depth range during operation and preventing over-insertion.

[0070] The limit ring 700 also provides an additional support point that contacts the surface of the arm bushing under test, which can increase the stability of the device, reduce shaking caused by vibration or external force during operation, and improve the detection accuracy.

[0071] In some embodiments, refer to Figure 1 As shown, the sleeve 100 is provided with a limiting groove 130, and the limiting ring 700 is provided with a locking member 710. The locking member 710 is engaged in the limiting groove 130 to restrict the limiting ring 700 on the sleeve 100.

[0072] It should be noted that the locking element 710 is engaged in the limiting groove 130, which can effectively fix the limiting ring 700 on the sleeve 100, ensuring that the limiting ring 700 will not move due to vibration or external force during operation, thereby maintaining the precise positioning of the device.

[0073] Those skilled in the art will understand that the variable diameter scanning device for boom bushing welds provided in this application comprises a sleeve 100, an operating component 200, a support component 300, a detection component 400, and at least one adjusting assembly 500. The support component 300 is inserted into the sleeve 100, with a portion of the support component 300 extending out of the sleeve 100 to form a support section 310. The detection component 400 is disposed on the support section 310 and is used to detect the inner wall weld of the boom bushing under test, thereby improving detection efficiency.

[0074] The operating component 200 is inserted into the support component 300 via the sleeve 100. The adjustment assembly 500 includes an adjustment component 510 and a first connecting component 520. The adjustment component 510 is used to abut against the inner wall of the boom bushing to be tested. When the operating component 200 drives one of the sleeve 100 and the support section 310 to move relative to the other, since the two ends of the first connecting component 520 are rotatably connected to the sleeve 100 and the adjustment component 510 respectively, and the adjustment component 510 is disposed on the support section 310, the first connecting component 520 can rotate relative to the sleeve 100, and drive the adjustment component 510 to move toward or away from the support section 310, thereby adjusting the distance between the adjustment component 510 and the support section 310, so that the adjustment component 510 and the detection component 400 can abut against the inner wall of the boom bushing to be tested with different inner diameters, thereby detecting the weld seam of the inner wall of the boom bushing to be tested with different inner diameters. The variable diameter scanning device for boom bushing welds provided in this application is easy to operate and improves inspection efficiency.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0077] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A variable diameter scanning device for boom bushing weld seams, characterized in that, include: Sleeve (100); A support member (300) is inserted into the sleeve (100), and a portion of the support member (300) extends out of the sleeve (100) to form a support section (310). An inspection piece (400) is disposed on the support section (310), and the inspection piece (400) is used to inspect the inner wall weld of the boom bushing to be tested; The operating component (200) is inserted into the support component (300) via the sleeve (100); At least one regulating component (500) includes: An adjusting member (510) is provided on the support section (310), and the adjusting member (510) is used to abut against the inner wall of the bushing of the arm to be tested; The first connector (520) is rotatably connected at both ends to the sleeve (100) and the adjusting member (510), respectively; the operating member (200) drives one of the sleeve (100) and the support section (310) to move relative to the other, so as to adjust the distance between the adjusting member (510) and the support section (310) through the first connector (520).

2. The variable diameter scanning device for boom bushing weld seams according to claim 1, characterized in that, The operating member (200) is provided with an external thread (210), and the sleeve (100) is provided with an internal thread (120) that matches the external thread (210). The external thread (210) is connected to the internal thread (120), and the operating member (200) drives the sleeve (100) to move relative to the support section (310) through the external thread (210).

3. The variable diameter scanning device for boom bushing weld seams according to claim 2, characterized in that, It also includes an elastic element (600), which is sleeved on the operating element (200), and the two ends of the elastic element (600) abut against the sleeve (100) and the support element (300) respectively.

4. The variable diameter scanning device for boom bushing weld seams according to claim 2, characterized in that, The operating member (200) is further provided with a limiting part (220), which abuts against the support member (300) to restrict the support member (300) on the operating member (200).

5. The variable diameter scanning device for boom bushing welds according to any one of claims 1 to 4, characterized in that, The adjusting member (510) has a slot (511) and the adjusting assembly (500) further includes a second connector (530). One end of the second connector (530) is connected to the support section (310), and the other end of the second connector (530) is inserted into the slot (511).

6. The variable diameter scanning device for boom bushing welds according to claim 5, characterized in that, The slot (511) has a first protrusion (512), and the second connector (530) has a second protrusion (531). The first protrusion (512) abuts against the second protrusion (531) to restrict the adjusting member (510) on the second connector (530).

7. The variable diameter scanning device for boom bushing welds according to any one of claims 1 to 4, characterized in that, The sleeve (100) has a connecting part (110), and the first connecting member (520) is rotatably connected to the sleeve (100) through the connecting part (110).

8. The variable diameter scanning device for boom bushing weld seams according to claim 7, characterized in that, The support section (310) has an abutment portion (320) on the side facing the sleeve (100), the abutment portion (320) abutting or disengaging from the connecting portion (110).

9. The variable diameter scanning device for boom bushing welds according to any one of claims 1 to 4, characterized in that, It also includes a limiting ring (700), which is sleeved on the sleeve (100) and located between the operating member (200) and the adjusting member (510). The limiting ring (700) is used to abut against the outer surface of the arm bushing to be tested.

10. The variable diameter scanning device for boom bushing weld seams according to claim 9, characterized in that, The sleeve (100) is provided with a limiting groove (130), and the limiting ring (700) is provided with a locking member (710). The locking member (710) is engaged in the limiting groove (130) to restrict the limiting ring (700) on the sleeve (100).

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