Flaw detection device for seamless steel pipe manufacturing

Abstract

The invention discloses a flaw detection device for seamless steel pipe manufacturing, and belongs to the technical field of flaw detection devices, the flaw detection device comprises a conveying roller way, four track limiting strips are fixedly connected to the inner wall of a frame of the conveying roller way, and the track limiting strips are symmetrically arranged in pairs; a first rotating ring and a second rotating ring are rotationally connected between every two adjacent parallel rail limiting strips, the first rotating rings are located in front of the second rotating rings, gear rings are fixedly connected to the outer ring walls of the first rotating rings and the second rotating rings, and a linkage driving mechanism used for driving the first rotating rings and the second rotating rings to rotate is arranged on the edge of the upper end of the conveying roller way. And at least one cleaning mechanism is arranged in the rotating ring II. The to-be-detected seamless steel pipe can be cleaned in advance, and dust shielding damage and cracking are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of flaw detection devices, and more specifically to a flaw detection device for manufacturing seamless steel pipes. Background Art

[0002] The seamless steel pipe is made by perforating a whole round steel and has no welds on the surface. Since the seamless steel pipe is formed in one piece, it needs to be tested for flaws after forming.

[0003] After searching, the utility model patent with publication number CN218766907U discloses a flaw detection device for seamless steel pipe manufacturing, including a frame, a plurality of rollers for transporting steel pipes are installed on the frame, the rollers are connected to a power box, a detection frame is provided on the path of the rollers transporting the steel pipes, and a movable plate is slidably provided in the detection frame; the device is suitable for factories that produce steel pipes on a large scale, and realizes automatic detection in the automated production process, and does not require manual clamping. The steel pipe is fed by the rollers, and the detection roller reciprocates around the steel pipe so that the detector performs flaw detection on the surface of the steel pipe. By adjusting the center position of the detection roller, the center position of the detection roller makes the center of steel pipes of different diameters coincide with the center position of the detection roller, so that the distances from several detectors to the surface of the steel pipe can be equal.

[0004] In the prior art, when seamless steel pipes are being transported for flaw detection, dust on their surface will block the cracks, thus affecting subsequent flaw detection. In addition, when seamless steel pipes are being transported, they roll to both sides due to their round tube-shaped shape, causing the axis of travel to deviate, which also affects subsequent detection. Therefore, improvements are needed. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a flaw detection device for seamless steel pipe manufacturing, which can clean the seamless steel pipe to be inspected in advance to prevent dust from covering the flaws.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A flaw detection device for manufacturing seamless steel pipes comprises a conveyor roller, wherein four track limit bars are fixedly connected to the inner wall of the frame of the conveyor roller, and the track limit bars are symmetrically arranged in pairs, and a swivel one and a swivel two are rotatably connected between two parallel adjacent track limit bars, and the swivel one is located in front of the swivel two, and the outer ring walls of the swivel one and the swivel two are fixedly connected to a gear ring, and the upper end edge of the conveyor roller is provided with a linkage drive mechanism for driving the swivel one and the swivel two to rotate, and at least one cleaning mechanism is provided inside the swivel two, and a plurality of flaw detection heads are fixedly assembled on the inner side of the swivel one, and the plurality of flaw detection heads are distributed in a ring array, and support legs are welded to the four corners of the bottom of the conveyor roller, and a base is welded to the bottom of the four support legs.

[0008] As a preferred solution of the present invention, the outer rings of the swivel one and the swivel two are both provided with annular grooves, and the cross-sectional profile of the annular grooves is the same as that of the track limit strips, and the annular grooves are inserted into the corresponding track limit strips.

[0009] As a preferred solution of the present invention, the linkage drive mechanism includes an electric motor, the end of the output shaft of the electric motor is fixedly connected to a linkage shaft, the front and rear sections of the shaft body of the linkage shaft are respectively fixedly connected to two driving gears, the positions of the two driving gears respectively correspond to swivel one and swivel two, an engaging transmission connection is formed between the driving gears and the corresponding gear rings, the middle section of the shaft body of the linkage shaft is installed with a support seat through a bearing, and the bottom of the support seat is fixedly connected to the frame of the conveyor roller.

[0010] As a preferred solution of the present invention, a support frame is fixedly installed at the tail of the motor, and the other end of the support frame is fixedly connected to the frame of the conveyor roller.

[0011] As a preferred scheme of the present invention, the cleaning mechanism includes a sliding rod slidably connected to the inner ring wall of the second swivel, and the sliding rod is arranged through the second swivel, the end of the sliding rod located on the outer side of the second swivel is fixedly connected to a circular arc seat, the inner arc of the circular arc seat is provided with a brush, the end of the sliding rod located on the inner side of the second swivel is fixedly connected to a ramp block, the inside of the side of the second swivel is threadedly connected to an adjusting rod, and the adjusting rod is arranged through the second swivel, the end of the adjusting rod located on the outer side of the second swivel is fixedly connected to a rotating knob, and the end of the adjusting rod located on the inner side of the second swivel is fixedly connected to a conical push block, and the conical push block conflicts with the inclined block.

[0012] As a preferred solution of the present invention, a spring is sleeved on the outside of the rod body of the sliding rod, one end of the spring is fixedly connected to the inclined block, and the other end of the spring is fixedly connected to the inner surface of the second swivel.

[0013] As a preferred solution of the present invention, the side of the inclined block is fixedly connected with a guide block, the interior of the swivel second is fixedly connected with a guide rod, and the guide rod passes through the guide block and is slidably connected with the guide block.

[0014] As a preferred solution of the present invention, in order to guide the travel axis of the seamless steel pipe to be inspected, a travel route holding mechanism is provided on the base, and the travel route holding mechanism includes a bidirectional screw installed inside the base through a bearing, and the outer side of the shaft body of the bidirectional screw is connected to two moving blocks by threads, and the moving blocks penetrate the base and are slidably connected to the base, and the top of each of the moving blocks is fixedly connected to a support block, and the support block is slidably connected to the base, and the upper end of the support block is fixedly connected to at least one clamping rod, and the end of the bidirectional screw located on the outer side of the base is fixedly connected to a turntable, and the surface of the turntable is fixedly connected to a rotating rod.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) In the present invention, two rotating rings are arranged on the conveying roller, the inner ring of one of the rotating rings is normally equipped with a flaw detection head, and then a cleaning mechanism is arranged on the inner side of the other rotating ring. In this way, when the seamless steel pipe is transported by the conveying roller, its outer wall can be cleaned by the cleaning mechanism first to prevent dust from blocking the cracks and improve the quality of detection. In addition, the cleaning mechanism can be adjusted to meet the use of seamless steel pipes of different diameters. At the same time, the two rotating rings share a linkage drive mechanism, which indirectly reduces the use cost.

[0017] (2) In the present invention, a base with supporting legs is provided under the conveyor roller for supporting the conveyor roller, and then a travel route maintaining mechanism is provided on the base, wherein the two support blocks can be moved toward or away from each other by rotating the bidirectional screw, thereby adjusting the spacing between the clamping rods on the support blocks, so that the travel route of the seamless steel pipe on the conveyor roller remains coaxial and is not easily offset, which is beneficial to subsequent flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 For the present invention Figure 1 A front cross-sectional view of the swivel 2;

[0021] Figure 4 For the present invention Figure 3 A magnified image of point A;

[0022] Figure 5 For the present invention Figure 1 A schematic diagram of the linkage drive mechanism structure;

[0023] Figure 6 For the present invention Figure 1 A schematic diagram of the structure of the travel route holding mechanism in FIG.

[0024] Figure 7 For the present invention Figure 1 A schematic diagram of the structure of the swivel in FIG.

[0025] Figure 8 For the present invention Figure 1 Schematic diagram of the conveyor roller structure.

[0026] Description of the numbers in the figure:

[0027] 1. Conveyor roller; 2. Track limit strip; 3. Swivel 1; 4. Swivel 2; 5. Gear ring; 6. Linkage drive mechanism; 7. Flaw detection head; 8. Cleaning mechanism; 9. Travel route holding mechanism; 10. Support leg; 11. Base; 61. Motor; 62. Linkage shaft; 63. Drive gear; 64. Support seat; 65. Support frame; 81. Slide rod; 82. Arc seat; 83. Brush; 84. Inclined block; 85. Spring; 86. Guide block; 87. Guide rod; 88. Adjustment rod; 89. Conical push block; 810. Knob; 91. Bidirectional screw; 92. Moving block; 93. Support block; 94. Clamping rod; 95. Turntable; 96. Turning rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example:

[0032] See also Figure 1-8 A flaw detection device for manufacturing seamless steel pipes comprises a conveyor roller 1, a plurality of conveyor rollers are arranged on the inner side of the frame of the conveyor roller 1, and the first and last conveyor rollers can be selected as rubber rollers, thereby increasing the friction with the seamless steel pipe, which is beneficial to the transportation of the seamless steel pipe, and one of the rubber rollers can be driven by a servo motor for transportation, and the inner wall of the frame of the conveyor roller 1 is fixedly connected with four track limit strips 2, and the track limit strips 2 are symmetrically arranged in pairs, and a swivel 1 3 and a swivel 2 4 are rotatably connected between two adjacent parallel track limit strips 2, and The swivel 1 3 is located in front of the swivel 2 4, and the outer ring walls of the swivel 1 3 and the swivel 2 4 are fixedly connected with a gear ring 5. The upper end edge of the conveyor roller 1 is provided with a linkage drive mechanism 6 for driving the swivel 1 3 and the swivel 2 4 to rotate. At least one cleaning mechanism 8 is provided inside the swivel 2 4. A plurality of flaw detection heads 7 are fixedly installed on the inner side of the swivel 1 3, and the plurality of flaw detection heads 7 are distributed in a ring array. Support legs 10 are welded to the four corners of the bottom of the conveyor roller 1, and a base 11 is welded to the bottom of the four support legs 10.

[0033] In this embodiment, the flaw detection head 7 is specifically an ultrasonic flaw detection head, which is a prior art and will not be described in detail in this embodiment.

[0034] In this embodiment, two swivels are arranged on the conveying roller 1, the inner ring of one of the swivels is normally installed with a flaw detection head 7, and then a cleaning mechanism 8 is arranged on the inner side of the other swivel. In this way, when the seamless steel pipe is transported through the conveying roller 1, its outer wall can be first cleaned by the cleaning mechanism 8 to prevent dust from blocking the cracks and improve the quality of detection. Moreover, the cleaning mechanism 8 can be adjusted for use to meet the use of seamless steel pipes of different diameters. At the same time, the two swivels share a linkage drive mechanism 6, which indirectly reduces the use cost.

[0035] For details, please refer to Figure 1 , Figure 2 , Figure 2 , Figure 4 as well as Figure 7The outer rings of the swivel 1 3 and the swivel 2 4 are both provided with annular grooves, and the cross-sectional profile of the annular grooves is the same as that of the track limiting strip 2 , and the annular grooves are inserted into the corresponding track limiting strips 2 .

[0036] In this embodiment, the arrangement of the track limiting strip 2 and the annular groove not only does not affect the rotation of the swivel 1 3 and the swivel 2 4 , but also has a limiting effect on the horizontal and vertical directions of the two.

[0037] For details, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 5 The linkage drive mechanism 6 includes an electric motor 61, the output shaft end of the electric motor 61 is fixedly connected to a linkage shaft 62, and the front and rear sections of the shaft body of the linkage shaft 62 are respectively fixedly connected to two driving gears 63, and the positions of the two driving gears 63 correspond to the rotating ring 1 3 and the rotating ring 2 4 respectively. The driving gears 63 are respectively meshed and connected with the corresponding gear rings 5. The middle section of the shaft body of the linkage shaft 62 is installed with a support seat 64 through a bearing, and the bottom of the support seat 64 is fixedly connected to the frame of the conveyor roller 1.

[0038] In this embodiment, the motor 61 is started, and the motor 61 drives the linkage shaft 62 to rotate. The two driving gears 63 on the linkage shaft 62 simultaneously drive the gear rings 5 ​​on the rotating ring 1 3 and the rotating ring 2 4 to rotate, thereby driving the rotating ring 1 3 and the rotating ring 2 4 to rotate.

[0039] For details, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 5 A support frame 65 is fixedly installed at the tail of the motor 61, and the other end of the support frame 65 is fixedly connected to the frame of the conveyor roller 1.

[0040] In this embodiment, the support frame 65 is provided to support the motor 61 .

[0041] For details, please refer to Figure 3 and Figure 4 The cleaning mechanism 8 includes a sliding rod 81 slidably connected to the inner wall of the swivel 24, and the sliding rod 81 is arranged through the swivel 24, the end of the sliding rod 81 located on the outer side of the swivel 24 is fixedly connected to a circular arc seat 82, and the inner arc of the circular arc seat 82 is provided with a brush 83, the end of the sliding rod 81 located on the inner side of the swivel 24 is fixedly connected to a sloped block 84, the inside of the side of the swivel 24 is connected with an adjusting rod 88 through a thread, and the adjusting rod 88 is arranged through the swivel 24, the end of the adjusting rod 88 located on the outer side of the swivel 24 is fixedly connected to a rotating knob 810, and the end of the adjusting rod 88 located on the inner side of the swivel 24 is fixedly connected to a conical push block 89, and the conical push block 89 conflicts with the inclined block 84.

[0042] In this embodiment, the adjusting rod 88 is rotated by the knob 810, and the adjusting rod 88 moves horizontally through the threaded movement between the adjusting rod and the rotating ring 2 4, and then the conical push block 89 at the end of the adjusting rod 88 interacts with the inclined block 84, so that the inclined block 84 is subjected to thrust, and the sliding rod 81 and the inclined block 84 slide toward the inside of the rotating ring 2 4 under the action of the guide block 86 and the guide rod 87 until the brush 83 on the arc seat 82 at the other end of the sliding rod 81 maintains sufficient contact with the seamless steel pipe to be inspected, so that the brush 83 can clean the seamless steel pipe in a rotatable manner.

[0043] For details, please refer to Figure 4 A spring 85 is sleeved on the outside of the rod body of the sliding rod 81, one end of the spring 85 is fixedly connected to the inclined block 84, and the other end of the spring 85 is fixedly connected to the inner surface of the rotating ring 24.

[0044] In this embodiment, by providing the spring 85 , the elastic force can be applied to the sliding rod 81 and the brush 83 of the arc seat 82 through the inclined surface block 84 .

[0045] For details, please refer to Figure 4 The side of the inclined block 84 is fixedly connected with a guide block 86, and the interior of the swivel 24 is fixedly connected with a guide rod 87, and the guide rod 87 passes through the guide block 86 and is slidably connected with the guide block 86.

[0046] In this embodiment, the guide block 86 and the guide rod 87 are provided to guide the telescopic sliding of the slide rod 81 .

[0047] For details, please refer to Figure 1 , Figure 3 as well as Figure 6 A travel route holding mechanism 9 is provided on the base 11, and the travel route holding mechanism 9 includes a bidirectional screw 91 installed inside the base 11 through a bearing, and the outer side of the shaft of the bidirectional screw 91 is connected to two moving blocks 92 by threads, and the moving blocks 92 penetrate the base 11 and are slidably connected to the base 11, and the top of each of the moving blocks 92 is fixedly connected to a support block 93, and the support block 93 is slidably connected to the base 11, and the upper end of the support block 93 is fixedly connected to at least one clamping rod 94, and the clamping rod 94 can be inserted between the conveying rollers of the conveyor roller 1, and the end of the bidirectional screw 91 located on the outer side of the base 11 is fixedly connected to a turntable 95, and the surface of the turntable 95 is fixedly connected to a rotating rod 96.

[0048] In this embodiment, the bidirectional screw 91 is rotated by the rotating rod 96 and the rotating disk 95, and the bidirectional screw 91 drives the two moving blocks 92 to move toward or away from each other, and then the support blocks 93 on the moving blocks 92 move synchronously until the spacing between the multiple clamping rods 94 on the two support blocks 93 matches the seamless steel pipe to be inspected.

[0049] Working principle: When in use, the travel path holding mechanism 9 and the cleaning mechanism 8 are adjusted according to the diameter of the seamless steel pipe to be detected. First, the bidirectional screw 91 is rotated by the rotating rod 96 and the rotating disk 95, and the bidirectional screw 91 drives the two moving blocks 92 to move toward or away from each other, and then the supporting blocks 93 on the moving blocks 92 move synchronously until the spacing between the multiple clamping rods 94 on the two supporting blocks 93 matches the seamless steel pipe to be detected;

[0050] Then, the adjusting rod 88 is rotated by the knob 810, and the adjusting rod 88 moves horizontally through the threaded motion between the adjusting rod 88 and the rotating ring 4, and then the conical push block 89 at the end of the adjusting rod 88 interacts with the inclined block 84, so that the inclined block 84 is thrust, and the slide bar 81 and the inclined block 84 slide toward the outside of the rotating ring 4 under the action of the guide block 86 and the guide rod 87 until the brush 83 on the arc seat 82 at the other end of the slide bar 81 maintains sufficient contact with the seamless steel pipe to be tested;

[0051] Finally, start the motor 61, which drives the linkage shaft 62 to rotate. The two driving gears 63 on the linkage shaft 62 simultaneously drive the gear rings 5 ​​on the swivel 1 3 and the swivel 2 4 to rotate, thereby driving the swivel 1 3 and the swivel 2 4 to rotate. At this time, the cleaning mechanism 8 on the swivel 2 4 can clean the outer surface of the seamless steel pipe to be inspected to prevent dust from blocking the cracks and improve the quality of inspection. The flaw detection head 7 on the swivel 1 3 performs a full-scale inspection of the outer wall of the seamless steel pipe to be inspected. Moreover, under the guidance of the travel path maintaining mechanism 9, the travel path of the seamless steel pipe on the conveyor roller 1 remains coaxial and is not easily offset, thereby preventing deviations in the flaw detection.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A flaw detection device for seamless steel pipe manufacturing, comprising a conveyor roller (1), characterized in that: Four track limit bars (2) are fixedly connected to the inner wall of the frame of the conveying roller (1), and the track limit bars (2) are symmetrically arranged in pairs. A swivel ring (3) and a swivel ring (4) are rotatably connected between two parallel adjacent track limit bars (2), and the swivel ring (3) is located in front of the swivel ring (4). The outer ring walls of the swivel ring (3) and the swivel ring (4) are fixedly connected to a gear ring (5). The upper edge of the conveying roller (1) is provided with a linkage driving mechanism (6) for driving the swivel ring (3) and the swivel ring (4) to rotate. At least one cleaning mechanism (8) is arranged inside the swivel ring (4). A plurality of flaw detection heads (7) are fixedly assembled on the inner side of the swivel ring (3), and the plurality of flaw detection heads (7) are distributed in a ring array. Support legs (10) are welded to the four corners of the bottom of the conveying roller (1), and a base (11) is welded to the bottom of the four support legs (10).

2. A flaw detection device for seamless steel pipe manufacturing according to claim 1, characterized in that: The outer rings of the rotating ring 1 (3) and the rotating ring 2 (4) are both provided with an annular groove, and the cross-sectional profile of the annular groove is the same as that of the track limiting strip (2), and the annular groove is inserted into the corresponding track limiting strip (2).

3. A flaw detection device for seamless steel pipe manufacturing according to claim 1, characterized in that: The linkage drive mechanism (6) comprises an electric motor (61), the output shaft end of the electric motor (61) is fixedly connected to a linkage shaft (62), the front and rear sections of the shaft body of the linkage shaft (62) are respectively fixedly connected to two driving gears (63), the positions of the two driving gears (63) respectively correspond to the rotating ring 1 (3) and the rotating ring 2 (4), the driving gears (63) and the corresponding gear rings (5) form a meshing transmission connection, the middle section of the shaft body of the linkage shaft (62) is installed with a support seat (64) through a bearing, and the bottom of the support seat (64) is fixedly connected to the frame of the conveying roller (1).

4. A flaw detection device for seamless steel pipe manufacturing according to claim 3, characterized in that: A support frame (65) is fixedly mounted on the tail of the motor (61), and the other end of the support frame (65) is fixedly connected to the frame of the conveying roller (1).

5. The flaw detection device for seamless steel pipe manufacturing according to claim 1, characterized in that: The cleaning mechanism (8) comprises a sliding rod (81) slidably connected to the inner wall of the rotating ring 2 (4), and the sliding rod (81) is arranged through the rotating ring 2 (4); the end of the sliding rod (81) located on the outer side of the rotating ring 2 (4) is fixedly connected to a circular arc seat (82), and the inner arc of the circular arc seat (82) is provided with a brush (83); the end of the sliding rod (81) located on the inner side of the rotating ring 2 (4) is fixedly connected to a slope block (84); the inner side of the side of the rotating ring 2 (4) is connected to an adjusting rod (88) through a thread, and the adjusting rod (88) is arranged through the rotating ring 2 (4); the end of the adjusting rod (88) located on the outer side of the rotating ring 2 (4) is fixedly connected to a rotating button (810); the end of the adjusting rod (88) located on the inner side of the rotating ring 2 (4) is fixedly connected to a conical push block (89), and the conical push block (89) abuts against the inclined block (84).

6. A flaw detection device for seamless steel pipe manufacturing according to claim 5, characterized in that: A spring (85) is sleeved on the outside of the rod body of the sliding rod (81), one end of the spring (85) is fixedly connected to the inclined surface block (84), and the other end of the spring (85) is fixedly connected to the inner surface of the second rotating ring (4).

7. A flaw detection device for seamless steel pipe manufacturing according to claim 5, characterized in that: The side of the inclined surface block (84) is fixedly connected with a guide block (86), and the interior of the second rotating ring (4) is fixedly connected with a guide rod (87), and the guide rod (87) passes through the guide block (86) and is slidably connected with the guide block (86).

8. The flaw detection device for seamless steel pipe manufacturing according to claim 1, characterized in that: The base (11) is provided with a travel route holding mechanism (9), the travel route holding mechanism (9) comprising a bidirectional screw (91) installed inside the base (11) through a bearing, two moving blocks (92) are connected to the outer side of the shaft of the bidirectional screw (91) through threads, the moving blocks (92) penetrate the base (11) and are slidably connected to the base (11), the top of each moving block (92) is fixedly connected to a support block (93), the support block (93) is slidably connected to the base (11), the upper end of the support block (93) is fixedly connected to at least one clamping rod (94), one end of the bidirectional screw (91) located outside the base (11) is fixedly connected to a turntable (95), and the surface of the turntable (95) is fixedly connected to a turntable (96).

Images