Crawler for pipeline welding seam detection

Abstract

The utility model relates to the technical field of pipeline crawl devices, and discloses a crawl device for pipeline welding seam detection, which comprises a casing main body and a mounting groove arranged in the casing main body, and further comprises a synchronous adjusting mechanism arranged in the mounting groove, the inner wall of the connecting sleeve is slidably connected with a movable shell. Through cooperation of the synchronous adjusting mechanism, the connecting sleeve and the movable shell, the distance between the idler wheels can be adjusted, the idler wheels can be attached to the inner wall of a pipeline, rapid adjustment can be conducted according to the size of the pipeline, the applicability of the crawler is improved, workers do not need to carry crawler bodies of various sizes, the carrying burden is reduced, and the working efficiency is improved. Under the cooperation of the connecting piece, the cross seat, the transmission mechanism and the hard brush, the position of the hard brush can be adjusted, and impurities in front of the moving roller can be effectively cleaned, so that the influence on the movement of the crawler is reduced, and the use effect of the crawler is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline crawler technology, specifically a crawler for pipeline weld inspection. Background Technology

[0002] Pipelines are devices used to transport gases, liquids, or fluids containing solid particles. They are widely used in various industries, mainly for water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations. Therefore, pipelines are generally long and require the connection of multiple hollow pipes together. The most common connection method is welding. However, the quality of welds is unstable and weld defects exist. It is necessary to use a crawler to inspect the pipeline after welding. If weld defects are found, they need to be repaired immediately. Furthermore, the pipeline needs to be inspected regularly with a crawler during subsequent use.

[0003] The crawlers currently in use do not have the function of adjusting size. When faced with pipes of different sizes, the crawlers cannot be matched with the pipe size in time, and it is often necessary to replace them with different sizes of crawlers. This does not improve the applicability of the crawlers. When facing pipes of different sizes at the same time, the staff need to carry multiple sizes of crawlers, which increases the carrying burden. When the pipes are inspected later, impurities such as algae will accumulate on the inner wall of the pipes after use. Some of these impurities are quite sticky. When these impurities are concentrated in one area, the crawler will come into contact with these impurities, which will affect the movement of the crawler and reduce the effectiveness of the crawler. Utility Model Content

[0004] The purpose of this invention is to provide a crawler for inspecting pipe welds, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a crawler for inspecting pipe welds, comprising a housing body and a mounting groove formed inside the housing body, and further comprising:

[0006] The synchronous adjustment mechanism is set inside the mounting slot. A connecting sleeve is bolted to the surface of the main body of the housing. A movable shell is slidably connected to the inner wall of the connecting sleeve. A connecting rod is bolted to the side of the movable shell away from the surface of the main body of the housing. One end of the surface of the connecting rod passes through one side of the surface of the connecting sleeve and is slidably connected to the through point. A connector is bolted to the other end of the surface of the connecting rod.

[0007] A roller rotates on the inner wall of the connector. A camera assembly is provided on one side of the top of the main body of the housing. A crossbar is bolted to the side of the main body of the housing near the surface of the camera assembly. A cross seat is bolted to the other end of the crossbar. A transmission mechanism is provided on all four sides of the cross seat. Hard brushes are also provided on all four sides of the cross seat.

[0008] Preferably, the synchronization adjustment mechanism includes a worm rotating on one side of the top of the main body of the housing and a worm wheel meshing with one side of the worm's surface. A rotating rod is rotatably connected to the inner wall of the mounting groove. The inner wall of the worm wheel is bolted to one side of the rotating rod's surface. A first bevel gear is bolted to both sides of the rotating rod's surface. A second bevel gear is meshed with all four sides of the first bevel gear's surface on both sides. One side of the second bevel gear's surface is rotatably connected to one side of the mounting groove's inner wall. A threaded rod is bolted to one side of the second bevel gear's surface. One side of the threaded rod's surface is threaded to the inner wall of the movable housing.

[0009] Preferably, the transmission mechanism includes a housing that slides on one side of the cross seat surface and a mounting base that is bolted to the side of the housing away from the cross seat surface. A connecting frame is bolted to the side of the mounting base near the main body surface of the housing. The two sides of the inner wall of the connecting frame are bolted to the two sides of the connecting component surface, respectively. The side of the mounting base away from the housing surface is interlocked with one end of the hard brush surface.

[0010] Preferably, the number of connecting sleeves is eight and they are evenly distributed at eight locations on the surface of the main body of the housing.

[0011] Preferably, the cross-section of the movable shell is square, and the inner wall of the connecting sleeve is also square.

[0012] Preferably, the number of the hard-bristled brushes is several and they are staggered.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention, through the coordination of a synchronous adjustment mechanism, a connecting sleeve, and a movable shell, allows for adjustment of the distance between the rollers, enabling the rollers to fit snugly against the inner wall of the pipe. It allows for rapid adjustment according to the pipe's dimensions, improving the crawler's applicability. Workers no longer need to carry multiple sizes of crawlers, reducing their carrying burden. The combination of the connecting parts, cross seat, transmission mechanism, and hard brush allows for adjustment of the hard brush's position and effective cleaning of impurities in front of the moving rollers, thus minimizing the impact on the crawler's movement and improving its performance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the main body of the casing in this utility model;

[0017] Figure 3 This is a schematic diagram of the synchronous adjustment mechanism in this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the connecting sleeve in this utility model;

[0019] Figure 5 This is a schematic diagram of the transmission mechanism in this utility model.

[0020] In the diagram: 1. Main body of the casing; 2. Mounting slot; 3. Synchronization adjustment mechanism; 31. Worm gear; 32. Worm wheel; 33. Rotating rod; 34. First bevel gear; 35. Second bevel gear; 36. Threaded rod; 4. Connecting sleeve; 5. Moving shell; 6. Connecting rod; 7. Connecting piece; 8. Roller; 9. Camera assembly; 10. Crossbar; 11. Cross seat; 12. Transmission mechanism; 121. Sleeve; 122. Mounting base; 123. Connecting frame; 13. Hard brush. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5As shown, a crawler for inspecting pipe welds includes a housing body 1. An installation groove 2 is formed inside the housing body 1, and a synchronization adjustment mechanism 3 is installed inside the installation groove 2. Connecting sleeves 4 are bolted to the surface of the housing body 1. Eight connecting sleeves 4 are evenly distributed at eight locations on the surface of the housing body 1. Movable shells 5 are slidably connected to the inner walls of the connecting sleeves 4. The movable shells 5 cooperate with the synchronization adjustment mechanism 3. When the synchronization adjustment mechanism 3 is running, it can simultaneously connect the eight movable shells 5 to the eight connecting sleeves 4 at the eight locations. The internal movement mechanism includes a square-shaped movable housing 5, whose cross-section is square, and the inner wall of the connecting sleeve 4 is also square. A connecting rod 6 is bolted to the side of the movable housing 5 away from the surface of the main housing 1. One end of the connecting rod 6 passes through one side of the surface of the connecting sleeve 4 and is slidably connected to it. When the movable housing 5 moves, it can drive the connecting rod 6 to move. A connecting piece 7 is bolted to the other end of the connecting rod 6. When the connecting rod 6 moves, it can drive the connecting piece 7 to move. A roller 8 is rotatably connected to the inner wall of the connecting piece 7. When the connecting piece 7 moves, it can drive the roller 8 to move. As the eight rollers 8 move and contact the inner wall of the pipe, a camera assembly 9 is installed on one side of the top of the main body 1. The camera assembly 9 consists of an electronic control board, a mounting plate, and a camera. With the help of the camera assembly 9, it is convenient for staff to observe the inside of the pipe. A crossbar 10 is bolted to the side of the main body 1 near the surface of the camera assembly 9. A cross seat 11 is bolted to the other end of the crossbar 10. Transmission mechanisms 12 are provided on all four sides of the cross seat 11. The four transmission mechanisms 12 are respectively connected to four points near the camera assembly 9. When the four connecting parts 7 are used together, they can drive the transmission mechanisms 12 on the four sides to run when the four connecting parts 7 move. The four sides of the cross seat 11 are also provided with hard brushes 13. There are several hard brushes 13 and they are staggered. The hard brushes 13 on the four sides are used in conjunction with the transmission mechanisms 12 on the four sides respectively. When the transmission mechanisms 12 on the four sides run, they can make the hard brushes 13 on the four sides move respectively. When the hard brushes 13 on the four sides move to the appropriate position, they can clean the impurities on the inner wall of the pipe during the movement of the crawler.

[0023] The synchronous adjustment mechanism 3 includes a worm gear 31. One side of the surface of the worm gear 31 is rotatably connected to one side of the top of the main body 1. A worm wheel 32 is meshed with one side of the surface of the worm gear 31. When the worm gear 31 rotates, it can drive the worm wheel 32 to rotate. A rotating rod 33 is rotatably connected to the inner wall of the mounting groove 2. The inner wall of the worm wheel 32 is bolted to one side of the surface of the rotating rod 33. When the worm wheel 32 rotates, it can drive the rotating rod 33 to rotate. First bevel gears 34 are bolted to both sides of the surface of the rotating rod 33. When the rotating rod 33 rotates, it can drive the first bevel gears on both sides. 34 rotates, and the four sides of the surface of the first bevel gear 34 on both sides are meshed with the second bevel gear 35. One side of the surface of the second bevel gear 35 is rotatably connected to one side of the inner wall of the mounting groove 2. When the first bevel gear 34 on both sides rotates, it can drive the second bevel gear 35 at eight locations to rotate. One side of the surface of the second bevel gear 35 is bolted with a threaded rod 36. When the second bevel gear 35 rotates, it can drive the threaded rod 36 to rotate. One side of the surface of the threaded rod 36 is threadedly connected to the inner wall of the movable shell 5. When the threaded rod 36 rotates, it can make the movable shell 5 move.

[0024] The transmission mechanism 12 includes a housing 121. The inner wall of the housing 121 is slidably connected to one side of the surface of the cross seat 11. A mounting base 122 is bolted to the side of the housing 121 away from the surface of the cross seat 11. A connecting frame 123 is bolted to the side of the mounting base 122 near the surface of the main body 1. The two sides of the inner wall of the connecting frame 123 are respectively bolted to the two sides of the surface of the connecting member 7. When the connecting member 7 moves, it can drive the connecting frame 123 to move. When the connecting frame 123 moves, it can drive the mounting base 122 to move. When the mounting base 122 moves, it can make the housing 121 slide along one side of the surface of the cross seat 11. The side of the mounting base 122 away from the surface of the housing 121 is interlocked with one end of the surface of the hard brush 13. When the mounting base 122 moves, it can drive the hard brush 13 to move.

[0025] It is worth noting that the technical features such as the camera component 9 proposed in this technical solution should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be selected using conventional methods in the field. This technical solution will not elaborate further.

[0026] Working principle: Before using the crawler, the operator can rotate the worm gear 31 according to the pipe size. When the worm gear 31 rotates, it drives the worm wheel 32 to rotate. Then, the worm wheel 32 rotates, which drives the rotating rod 33 to rotate. Next, the rotating rod 33 rotates, which causes the first bevel gears 34 on both sides to rotate. When the first bevel gears 34 on both sides rotate, they simultaneously cause the second bevel gear 35 at position 8 to rotate. Then, the second bevel gear 35 at position 8 rotates, which drives the threaded rod 36 at position 8 to rotate. Next, the threaded rod 36 rotates, which causes the moving housing 5 to move. When the moving housing 5 moves, it drives the connecting rod 6 to move. Then, the connecting rod 6 moves, which drives the connecting piece 7 to move. Finally, the connecting piece 7 moves... The rollers 8 can be moved. When one side of the surface of each of the eight rollers 8 contacts the inner wall of the pipe, the four connecting parts 7 near the camera assembly 9 can move the four connecting brackets 123 respectively. Then, the moving of the connecting brackets 123 can move the mounting base 122. Next, the moving of the mounting base 122 can make the housing 121 slide along one side of the surface of the cross seat 11. When the mounting base 122 moves, it can move the hard brush 13. When the eight rollers 8 contact the inner wall of the pipe respectively, the four hard brushes 13 can contact the inner wall of the pipe respectively. When the crawler moves, the hard brushes 13 can clean the impurities on the inner wall of the pipe.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crawler for inspecting pipe welds, comprising a housing body (1) and a mounting groove (2) formed inside the housing body (1), characterized in that, Also includes: The synchronous adjustment mechanism (3) is set inside the mounting slot (2). A connecting sleeve (4) is bolted to the surface of the main body (1). A movable shell (5) is slidably connected to the inner wall of the connecting sleeve (4). A connecting rod (6) is bolted to the side of the movable shell (5) away from the surface of the main body (1). One end of the surface of the connecting rod (6) passes through one side of the surface of the connecting sleeve (4) and is slidably connected to it. A connector (7) is bolted to the other end of the surface of the connecting rod (6). A roller (8) rotates on the inner wall of the connector (7). A camera assembly (9) is provided on one side of the top of the main body (1). A crossbar (10) is bolted to the side of the main body (1) near the surface of the camera assembly (9). A cross seat (11) is bolted to the other end of the crossbar (10). A transmission mechanism (12) is provided on all four sides of the cross seat (11). Hard brushes (13) are also provided on all four sides of the cross seat (11).

2. The crawler for inspecting pipe welds according to claim 1, characterized in that: The synchronous adjustment mechanism (3) includes a worm (31) rotating on one side of the top of the main body (1) of the housing and a worm wheel (32) meshing with one side of the surface of the worm (31). A rotating rod (33) is rotatably connected to the inner wall of the mounting groove (2). The inner wall of the worm wheel (32) is bolted to one side of the surface of the rotating rod (33). A first bevel gear (34) is bolted to both sides of the surface of the rotating rod (33). A second bevel gear (35) is meshed with the four sides of the surface of the first bevel gear (34) on both sides. One side of the surface of the second bevel gear (35) is rotatably connected to one side of the inner wall of the mounting groove (2). A threaded rod (36) is bolted to one side of the surface of the second bevel gear (35). One side of the surface of the threaded rod (36) is threaded to the inner wall of the movable shell (5).

3. A crawler for inspecting pipe welds according to claim 1, characterized in that: The transmission mechanism (12) includes a housing (121) that slides on one side of the surface of the cross seat (11) and a mounting base (122) that is bolted to the side of the housing (121) away from the surface of the cross seat (11). A connecting frame (123) is bolted to the side of the mounting base (122) near the surface of the main body (1). The two sides of the inner wall of the connecting frame (123) are bolted to the two sides of the surface of the connecting piece (7) respectively. The side of the mounting base (122) away from the surface of the housing (121) is embedded in one end of the surface of the hard brush (13).

4. A crawler for inspecting pipe welds according to claim 1, characterized in that: The number of connecting sleeves (4) is eight, and they are evenly distributed at eight locations on the surface of the main body (1).

5. A crawler for inspecting pipe welds according to claim 1, characterized in that: The cross-section of the movable shell (5) is square, and the inner wall of the connecting sleeve (4) is also square.

6. A crawler for inspecting pipe welds according to claim 1, characterized in that: The number of the hard-bristled brushes (13) is several and they are designed in a staggered manner.

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