A vertical pipeline surface ultrasonic testing auxiliary device

Abstract

The utility model discloses a kind of vertical pipeline surface ultrasonic detection auxiliary devices, belong to pipeline detection auxiliary equipment technical field, including detection table, positioning fixture, operating mechanism and ultrasonic detection instrument;Positioning fixture includes guide structure, multiple sets of clamping structure, drive structure and multiple sets of locking structure;Guide structure includes base, fixed guide disc, transmission shaft and movable guide disc, movable guide disc and fixed guide disc are all provided with multiple circumferential array distribution and the guide groove of direction completely opposite, each clamping structure is sequentially concentrically limited in the intersecting groove formed by movable guide disc guide groove and fixed guide disc guide groove, all clamping structure can be driven along guide groove synchronous sliding by rotating movable guide disc.The ultrasonic detection auxiliary device has been further optimized to positioning fixture, by optimizing guide structure and drive mode, the synchronous contraction or expansion of all clamping structure is realized, and clamping efficiency and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline inspection auxiliary equipment, specifically a vertical pipeline surface ultrasonic inspection auxiliary device. Background Technology

[0002] In pipeline surface inspection (such as weld flaw detection and coating thickness measurement), it is often necessary to fix and adjust the pipeline to a suitable position using clamps so that the inspection equipment can scan and inspect the pipeline surface. In existing technologies, pipeline clamps mostly adopt single-point or multi-point independent clamping structures, requiring individual adjustment of the position of each clamp to fit the pipeline size, which has the following drawbacks: Low adjustment efficiency: Each gripper needs to be operated individually, which is time-consuming, especially in scenarios involving multiple pipe diameters or multiple batches of testing, which seriously affects work efficiency; Poor synchronization: Independent adjustment can easily lead to deviations in the position of each gripper, causing the pipe to be clamped at an angle and affecting the detection accuracy; Complex operation: Additional tools (such as wrenches) are required to tighten each clamp individually, making it difficult to complete the clamping action quickly. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a vertical pipe surface ultrasonic testing auxiliary device. This ultrasonic testing auxiliary device further optimizes the positioning clamp. By optimizing the guiding structure and driving method, it realizes the synchronous contraction or expansion of all clamping structures, thereby improving clamping efficiency and accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An auxiliary device for ultrasonic testing of vertical pipe surfaces includes a testing table, a positioning fixture horizontally mounted on the testing table, an operating mechanism vertically mounted on the testing table, and an ultrasonic testing instrument mounted on the operating mechanism. The positioning fixture includes a guide structure, multiple sets of clamping structures that slide within the guide structure, a drive structure concentrically connected to the bottom of the guide structure, and multiple sets of locking structures mounted on the sides of the guide structure and acting on the guide structure. The guide structure includes a base, a fixed guide plate fixed above the base, a drive shaft passing through both the base and the fixed guide plate, and a movable guide plate fixed at the top of the drive shaft and directly above the fixed guide plate. Both the movable and fixed guide plates have multiple circumferentially arrayed guide grooves in completely opposite directions. Each set of clamping structures is concentrically located within an intersecting groove formed by the guide grooves of the movable and fixed guide plates. Rotating the movable guide plate drives all clamping structures to slide synchronously along the guide grooves.

[0005] By adopting the above scheme, the positioning fixture in the ultrasonic testing auxiliary device uses the intersecting guide design of the guide groove of the movable guide plate and the guide groove of the fixed guide plate. Rotating the movable guide plate can drive all clamping structures to slide synchronously, realizing the synchronous contraction or expansion of the clamping structures. By optimizing the guide structure and driving method, the synchronous adjustment of all clamping structures can be achieved, thereby greatly improving the clamping efficiency and accuracy.

[0006] In a preferred embodiment of a vertical pipe surface ultrasonic testing auxiliary device, the guide groove on the movable guide plate is an arc-shaped guide groove one, with at least four arc-shaped guide grooves, all of which are arranged in a clockwise circumferential array along the movable guide plate; the guide groove on the fixed guide plate is an arc-shaped guide groove two, with the same number of arc-shaped guide grooves as the arc-shaped guide groove one, all of which are arranged in a counterclockwise circumferential array along the fixed guide plate; the directions of the above arc-shaped guide grooves are opposite to ensure that the clamping structure slides synchronously inward or outward during rotation.

[0007] In a preferred embodiment of a vertical pipe surface ultrasonic testing auxiliary device, the clamping structure includes a vertical shaft that is vertically confined within a guide groove, a limiting nut threaded onto the vertical shaft, and at least two clamping wheels arranged in an array along the axial direction of the vertical shaft and rotatably mounted on the vertical shaft. The limiting nut helps the vertical shaft maintain a vertical state when sliding along the guide groove, thereby preventing the vertical shaft from tilting. The sides of the clamping wheels are covered with anti-slip sleeves (such as rubber sleeves). The upper and lower parts of each clamping wheel are respectively threaded onto the vertical shaft with adjusting nuts to fix the position of the clamping wheel on the vertical shaft and prevent it from sliding vertically.

[0008] As a preferred embodiment of a vertical pipe surface ultrasonic testing auxiliary device, the drive structure includes a driven gear concentrically connected to the bottom end of the drive shaft, a drive gear meshing with the driven gear, and a drive wheel (such as a handwheel) concentrically connected to the drive gear and partially located outside the testing platform; wherein the diameter of the drive gear is smaller than the diameter of the driven gear, and the drive gear and the driven gear together constitute a reduction gear set, which amplifies the torque and facilitates manual operation.

[0009] In a preferred embodiment of a vertical pipe surface ultrasonic testing auxiliary device, the locking structure includes multiple sets of locking blocks fixed to the side of a fixed guide plate and arranged in a circumferential array, as well as set screws threaded through the locking blocks. The top of the set screw can abut against the side of a movable guide plate. By rotating the set screw to abut against the movable guide plate, the movable guide plate can be fixed. The side of the movable guide plate is provided with multiple circumferentially arrayed anti-slip textures to increase the friction during contact, prevent the set screw from slipping, and improve the stability of fixing the movable guide plate.

[0010] In a preferred embodiment of a vertical pipe surface ultrasonic testing auxiliary device, the operating mechanism includes a vertical operating structure and a horizontal operating structure mounted on the vertical operating structure, wherein the horizontal operating structure and the positioning angle are located on the same vertical plane. The vertical operating structure includes a lead screw 1 vertically rotatably connected to the testing platform, two slide rods 1 vertically fixedly connected to the testing platform, a slide seat 1 simultaneously mounted on the lead screw 1 and slide rods 1, and a throttle fixedly connected to the top of the lead screw 1. The horizontal operating structure includes a lead screw 2 horizontally rotatably connected to the slide seat 1, two slide rods 2 horizontally slidably connected to the slide seat 1, a slide seat 2 simultaneously mounted on the lead screw 2 and slide rods 2, and a drive wheel 2 rotatably embedded in the slide seat 1. By adjusting the vertical operating structure and the horizontal operating structure respectively, the position of the ultrasonic testing instrument can be adjusted, supporting precise adjustment of the pipe height and horizontal position to adapt to testing requirements of different sizes and angles. The slide seat 1 is an N-shaped axisymmetric slide seat, with at least one end of the left and right ends equipped with the horizontal operating structure, supporting up to double-sided adjustment to adapt to different position testing requirements.

[0011] The beneficial effects of this utility model are: 1. Synchronous adjustment: Through the intersecting arc-shaped guide groove design of the movable guide plate and the fixed guide plate, rotating the movable guide plate can drive all clamping structures to slide synchronously, realizing the synchronous adjustment of multiple clamping wheels without the need for individual adjustment, which greatly improves the adjustment efficiency. 2. Adaptive clamping: The clamping wheel and the vertical shaft are rotatably connected, which can adapt to the circumferential direction of the pipe. With the help of the anti-slip sleeve, the friction is enhanced and the damage to the pipe surface is avoided. 3. Stable and reliable: The locking structure uses a set screw and anti-slip texture to prevent the movable guide plate from loosening, and the nut is raised to lock the position of the clamping wheel to ensure stable clamping process; 4. Easy to operate: The drive structure uses a reduction gear set to amplify torque, and can be operated manually or electrically, reducing labor intensity; 5. Flexible multi-directional adjustment: The vertical and horizontal operating structures work together to support precise adjustment of the pipe height and horizontal position, adapting to the testing needs of different sizes and angles. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of an ultrasonic testing auxiliary device; Figure 2 A three-dimensional structural diagram of an ultrasonic testing auxiliary device used in pipeline testing; Figure 3 This is a 3D structural diagram of the testing station; Figure 4 This is a three-dimensional structural diagram of the operating mechanism; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 This is a three-dimensional structural diagram of the positioning fixture; Figure 7 A three-dimensional structural diagram to guide the structure; Figure 8 To hide Figure 7 A three-dimensional structural diagram of the central movable guide plate; Figure 9 To hide Figure 8 Three-dimensional structural diagram of the fixed guide plate in the middle; Figure 10 A three-dimensional structure for clamping Figure 1 ; Figure 11 A three-dimensional structure for clamping Figure 2 ; Figure 12 A three-dimensional structural diagram of the driving structure; Figure 13 for Figure 7 A magnified view of a section at point B in the middle; The markings in the diagram are: 1-Testing table; 2-Operating mechanism; 3-Ultrasonic testing instrument; 4-Guiding structure; 401-Base; 402-Fixed guide plate; 403-Drive shaft; 404-Modible guide plate; 405-Arc-shaped guide groove one; 406-Arc-shaped guide groove two; 5-Clamping structure; 501-Vertical shaft; 502-Limit nut; 503-Clamping wheel; 504-Anti-slip sleeve; 505-Height adjustment nut; 6-Drive structure; 601-Driven gear; 602-Drive gear; 603-Drive wheel one; 7-Locking structure; 701-Locking block; 702-Setting screw; 8-Pipe. Detailed Implementation

[0014] 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.

[0015] like Figures 1 to 3 , Figures 6 to 9As shown, a vertical pipe surface ultrasonic testing auxiliary device is provided, which is used to assist in ultrasonic testing (weld inspection) of the outer surface of pipes. Specifically, it includes a testing table 1, a positioning fixture horizontally mounted on the testing table 1, an operating mechanism 2 vertically mounted on the testing table 1, and an ultrasonic testing instrument 3 (general-purpose ultrasonic flaw detector, model NDT650) mounted on the operating mechanism 2. The positioning fixture includes a guide structure 4, multiple sets of clamping structures 5 that slide and limit within the guide structure 4, a driving structure 6 concentrically connected to the bottom of the guide structure 4, and multiple sets of locking structures 7 installed on the sides of the guide structure 4 and acting on the guide structure 4. The guide structure 4 includes a bottom... The system includes a base 401, a fixed guide plate 402 fixed above the base 401, a drive shaft 403 passing through both the base 401 and the fixed guide plate 402, and a movable guide plate 404 fixed at the top of the drive shaft 403 and located directly above the fixed guide plate 402. Both the movable guide plate 404 and the fixed guide plate 402 have multiple circumferentially arrayed guide grooves with completely opposite directions. Each set of clamping structures 5 is concentrically located in the intersecting groove formed by the guide grooves of the movable guide plate 404 and the fixed guide plate 402. By rotating the movable guide plate 404, all clamping structures 5 can be driven to slide synchronously along the guide grooves. The positioning fixture in this ultrasonic testing auxiliary device uses the intersecting guide grooves of the movable guide plate 404 and the fixed guide plate 402 to guide the positioning fixture. Rotating the movable guide plate 404 can drive all the clamping structures 5 to slide synchronously, thus achieving synchronous contraction or expansion of the clamping structures 5. By optimizing the guide structure 4 and the driving method, synchronous adjustment of all the clamping structures 5 can be achieved, thereby greatly improving the clamping efficiency and accuracy.

[0016] like Figures 6 to 9 As shown, the guide groove on the movable guide plate 404 is an arc-shaped guide groove 405, and there are at least four arc-shaped guide grooves 405 (a total of four arc-shaped guide grooves 405 are provided in the figure). All arc-shaped guide grooves 405 are arranged in a clockwise circumferential array along the movable guide plate 404. The guide groove on the fixed guide plate 402 is an arc-shaped guide groove 406, and the number of arc-shaped guide grooves 406 is the same as the number of arc-shaped guide grooves 405. All arc-shaped guide grooves 406 are arranged in a counterclockwise circumferential array along the fixed guide plate 402. The directions of the above arc-shaped guide grooves are opposite to ensure that the clamping structure 5 slides inward or outward synchronously when rotating.

[0017] like Figures 10 to 11As shown, the clamping structure 5 includes a vertical shaft 501 that is vertically limited within the guide groove, a limiting nut 502 that is threaded onto the vertical shaft 501, and at least two clamping wheels 503 arranged in an array along the axial direction of the vertical shaft 501 and rotatably mounted on the vertical shaft 501 (there are two clamping wheels 503 in the figure). The limiting nut 502 helps the vertical shaft 501 to remain vertical when sliding along the guide groove, thereby preventing the vertical shaft 501 from tilting to the side. The sides of the clamping wheels 503 are covered with anti-slip sleeves 504 (rubber sleeves). The upper and lower parts of each clamping wheel 503 are respectively threaded onto the vertical shaft 501 with adjusting nuts 505 to fix the position of the clamping wheel 503 on the vertical shaft 501 and prevent it from sliding vertically.

[0018] like Figure 12 As shown, the drive structure 6 includes a driven gear 601 concentrically connected to the bottom end of the transmission shaft 403, a drive gear 602 meshing with the driven gear 601, and a drive wheel 603 (handwheel) concentrically connected to the drive gear 602 with a portion located outside the detection table 1. The diameter of the drive gear 602 is smaller than the diameter of the driven gear 601. In this case, the drive gear 602 and the driven gear 601 together form a reduction gear set. The torque is amplified by the reduction gear set to achieve labor-saving adjustment. If automatic control is required, the drive wheel 603 can be replaced with an electric drive head (servo motor) to precisely control the rotation angle through the controller.

[0019] like Figure 13 As shown, the locking structure 7 includes multiple sets of locking blocks 701 fixed to the side of the fixed guide plate 402 and arranged in a circumferential array, and set screws 702 threaded through the locking blocks 701. The top of the set screw 702 can abut against the side of the movable guide plate 404. By rotating the set screw 702 to abut against the movable guide plate 404, the movable guide plate 404 can be fixed. The side of the movable guide plate 404 is provided with multiple anti-slip textures arranged in a circumferential array to increase the friction when abutting and prevent the set screw 702 from sliding, thereby improving the stability of fixing the movable guide plate 404.

[0020] like Figures 4 to 5As shown, the operating mechanism 2 includes a vertical operating structure and a horizontal operating structure mounted on the vertical operating structure, wherein the horizontal operating structure and the positioning angle are located on the same vertical plane; the vertical operating structure includes a lead screw 1 vertically rotatably connected to the testing table 1, two slide rods 1 vertically fixedly connected to the testing table 1, a slide seat 1 simultaneously mounted on the lead screw 1 and the slide rods 1, and a throttle fixedly connected to the top of the lead screw 1; the horizontal operating structure includes a lead screw 2 horizontally rotatably connected to the slide seat 1, two slide rods 2 horizontally slidably connected to the slide seat 1, a slide seat 2 simultaneously mounted on the lead screw 2 and the slide rods 2, and a drive wheel 2 rotatably embedded in the slide seat 1; by adjusting the vertical operating structure and the horizontal operating structure respectively, the position adjustment of the ultrasonic testing instrument 3 can be realized, which supports the precise adjustment of the height and horizontal position of the pipe 8, and adapts to the testing needs of different sizes and angles. The slide is an N-shaped axisymmetric slide. At least one of the left and right ends of the slide is equipped with a transverse operating structure (only one transverse operating structure is installed in the figure). It can support dual-sided adjustment to adapt to different position detection needs.

[0021] The working principle of this utility model: Initial positioning: Fix the base 401 on the testing platform, and place the pipe 8 to be tested vertically between all the clamping rollers 503. Manually or electrically rotate the drive wheel 603. Through the meshing transmission of the drive gear 602 and the driven gear 601, the movable guide plate 404 rotates slowly. Through the intersection constraint of the arc-shaped guide groove 405, all the clamping rollers 503 are driven to contract or expand synchronously. Finally, the clamping rollers 503 initially contact the outer wall of the pipe 8. The clamping rollers 503 adapt to the circumferential direction of the pipe 8 through the anti-slip sleeve 504, and the pressure is dispersed by multiple contact points to ensure that the pipe 8 is stably clamped without damage.

[0022] Synchronous locking: Rotate the set screw 702 to abut against the side of the fixed movable guide plate 404 to prevent the movable guide plate 404 from becoming loose.

[0023] Inspection operation: After clamping, the ultrasonic testing instrument 3 is moved or rotated along the axial direction of the pipe 8 by operating the vertical and horizontal operating structures respectively, so as to carry out a comprehensive inspection of the surface.

[0024] The above-mentioned synchronous adjustment of multiple clamping wheels 503 is achieved through the intersection constraint of the arc-shaped guide groove, the clamping wheel 503 self-adaptation and multi-level locking structure 7 ensures clamping stability, and the gear transmission reduces the operating force and supports precise control, thus solving the problems of low adjustment efficiency, poor synchronization and complicated operation of traditional clamps.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vertical pipe surface ultrasonic testing auxiliary device, comprising a testing table, a positioning clamp horizontally mounted on the testing table, an operating mechanism vertically mounted on the testing table, and an ultrasonic testing instrument mounted on the operating mechanism; Its features are: The positioning fixture includes a guide structure, multiple sets of clamping structures with sliding limits within the guide structure, a drive structure concentrically connected to the bottom of the guide structure, and multiple sets of locking structures installed on the side of the guide structure and acting on the guide structure. The guiding structure includes a base, a fixed guide plate fixed above the base, a drive shaft passing through both the base and the fixed guide plate, and a movable guide plate fixed at the top of the drive shaft and directly above the fixed guide plate. Both the movable and fixed guide plates have multiple circumferentially arrayed guide grooves in completely opposite directions. Each clamping structure is concentrically located within the intersecting groove formed by the guide grooves of the movable and fixed guide plates. By rotating the movable guide plate, all clamping structures can be driven to slide synchronously along the guide grooves.

2. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 1, characterized in that: The guide groove on the movable guide plate is an arc-shaped guide groove one, and there are at least four arc-shaped guide grooves one. All arc-shaped guide grooves one are arranged in a clockwise circumferential array along the movable guide plate. The guide groove on the fixed guide plate is an arc-shaped guide groove two. The number of arc-shaped guide grooves two is the same as the number of arc-shaped guide grooves one. All arc-shaped guide grooves two are arranged in a counterclockwise circumferential array along the fixed guide plate.

3. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 1, characterized in that: The clamping structure includes a vertical shaft that is vertically limited within a guide groove, a limiting nut that is threaded onto the vertical shaft, at least two clamping wheels that are arranged in an array along the vertical shaft axis and rotatably mounted on the vertical shaft, and anti-slip sleeves fitted on the sides of the clamping wheels.

4. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 3, characterized in that, Each clamping wheel is threaded onto the vertical shaft with an adjusting nut at the top and bottom.

5. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 1, characterized in that, The drive structure includes a driven gear concentrically connected to the bottom end of the transmission shaft, a drive gear meshing with the driven gear, and a drive wheel partially located outside the detection platform concentrically connected to the drive gear, wherein the diameter of the drive gear is smaller than the diameter of the driven gear.

6. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 1, characterized in that, The locking structure includes multiple sets of locking blocks fixed to the side of the fixed guide plate and arranged in a circumferential array, and a set screw threaded through the locking blocks, wherein the top of the set screw can abut against the side of the movable guide plate.

7. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 6, characterized in that, The side of the movable guide plate is provided with multiple circumferentially arrayed anti-slip textures.

8. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 1, characterized in that, The operating mechanism includes a vertical operating structure and a horizontal operating structure mounted on the vertical operating structure, wherein the horizontal operating structure and the positioning angle are located on the same vertical plane.

9. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 8, characterized in that, The vertical operating structure includes a lead screw 1 vertically rotatably connected to the testing table, two slide rods 1 vertically fixedly connected to the testing table, a slide block 1 simultaneously installed on the lead screw 1 and slide rod 1, and a throttle fixedly connected to the top of the lead screw 1; the horizontal operating structure includes a lead screw 2 horizontally rotatably connected to the slide block 1, two slide rods 2 horizontally slidably connected to the slide block 1, a slide block 2 simultaneously installed on the lead screw 2 and slide rod 2, and a drive wheel 2 rotatably embedded in the slide block 1.

10. The auxiliary device for ultrasonic testing of vertical pipe surfaces according to claim 9, characterized in that, The slide is an N-shaped axisymmetric slide, and at least one of the left and right ends of the slide is equipped with a transverse operating structure.

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