A positioning and anti-drop fixture for steel pipe drop weight test

Abstract

The present invention discloses a positioning and anti-slipping clamp for a steel pipe drop hammer test, which specifically relates to the technical field of steel pipe testing, comprising: a spiral steel pipe main body, a mounting frame and two limiting blocks, wherein one side of the two limiting blocks is recessed inwards to form a limiting groove for limiting the spiral steel pipe main body; a plurality of groups of clamping components are used to form the same curvature as the outside of the spiral steel pipe main body and support the spiral steel pipe main body at multiple points in the limiting groove, wherein each group of the clamping components comprises a clamping column slidably mounted in the limiting groove, a mounting groove provided in the limiting block and a supporting column fixed in the mounting groove; through the provision of a plurality of clamping columns, it is possible to achieve the formation of the same spiral curvature between the plurality of clamping columns and the spiral steel pipe main body, which is beneficial to maintaining the matching of the curvature of the spiral steel pipe main body in the two limiting grooves, can prevent the limiting blocks from slipping off in the clamp, improve the accurate positioning of the clamp on the test position of the spiral steel pipe, and is beneficial to the stable drop hammer test of the spiral steel pipe main body.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe testing, and in particular to a positioning anti-slip fixture for a steel pipe drop weight test. Background Art

[0002] Double-sided submerged arc welded steel pipe is a steel pipe that uses double-sided automatic submerged arc welding technology to curl the strip into a tube and form a spiral weld. Double-sided submerged arc welded spiral steel pipe is widely used in long-distance pipeline projects of oil and natural gas due to its excellent pressure bearing capacity and good corrosion resistance. In the production process of spiral steel pipe, since the spiral steel pipe is gradually rolled up by the strip through multiple roller rolling to form a circular tube blank with an open gap, and then formed by internal and external submerged arc welding, it is necessary to perform a drop hammer test on the spiral steel pipe. By performing a drop hammer test on the material, the risk of brittle fracture that may occur under low temperature or other specific conditions can be identified, thereby guiding the improvement and optimization of the material. At present, when performing a drop hammer test on the spiral steel pipe, the outer ring of the steel pipe needs to be fixed with a positioning anti-slip fixture in the drop hammer test. Due to the spiral groove angle on the end face of the spiral steel pipe, there is a gap between the spiral curvature of the spiral steel pipe and the fixture, resulting in a mismatch between the curvature of the spiral steel pipe and the fixture, which causes the spiral steel pipe to slip in the fixture, affecting the accuracy of the test position of the spiral steel pipe. Summary of the invention

[0003] The object of the present invention is to provide a positioning and anti-slipping clamp for a drop hammer test of a steel pipe. Through the arrangement of multiple clamping columns, relative extrusion between the multiple clamping columns and the spiral steel pipe body can be achieved, so that the concave and convex parts form the same spiral curvature, which is beneficial for the spiral steel pipe body to maintain the matching of the curvature in the two limiting grooves, and can prevent the limiting block from slipping in the clamp, thereby improving the precise positioning of the clamp on the test position of the spiral steel pipe, which is beneficial for the spiral steel pipe body to carry out a stable drop hammer test, so as to solve the above-mentioned deficiencies in the technology.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a positioning and anti-dropping fixture for a steel pipe drop weight test, comprising:

[0005] A spiral steel pipe body, a mounting frame and two limiting blocks, and one side of the two limiting blocks is inwardly recessed to form a limiting groove for limiting the spiral steel pipe body;

[0006] Multiple groups of clamping components are used to form the same arc as the outside of the spiral steel pipe body and support the spiral steel pipe body at multiple points in the limiting groove. Each group of the clamping components includes a clamping column slidably installed in the limiting groove, a mounting groove opened in the limiting block, and a support column fixed in the mounting groove. A swing block is installed on the outside of the support column. A connecting block is fixed at one end of the clamping column, and the connecting block is located in the mounting groove and contacts one side of the mounting groove. A stabilizing component is provided on the mounting frame for processing particulate impurities on the surface of the spiral steel pipe body and stabilizing the contact between the multiple groups of clamping components, the limiting block and the spiral steel pipe body. Two groups of connecting components are provided on the mounting frame. It is used to promote the synchronous and staggered movement of the two limiting blocks and the stabilizing component, and drive the relative extrusion between multiple groups of clamping components and the spiral steel pipe body; and one end of the connecting block is in an arc-shaped structure, so that the arc at one end of the connecting block is in point contact with one end of the swing block, so that they can play a floating role with each other, which can prevent mutual interference between the connecting block and the swing block, and is conducive to maintaining good promotion and swinging between the connecting block and the swing block, so that the clamping column and the spiral steel pipe body maintain stable contact, and a U-shaped socket is formed in the swing block, so that there is a shaking gap between the swing block and the support column, which plays a floating role, and facilitates the swing block to swing around the support column.

[0007] Preferably, a sleeve is fixed in the limiting block for the clamping column to slide, one end of the sleeve extends into the installation groove and is fixed with a boss, a spring is installed between the boss and the connecting block, and the spring is sleeved on the outside of the clamping column; and the setting of the sleeve can reduce the direct friction between the clamping column and the limiting block, and can prevent the surface of the clamping column from being damaged due to friction during long-term use, affecting the normal extension and contraction of the clamping column in the limiting groove, and the spring itself has elasticity, thereby giving a thrust to one side of the connecting block, so that the connecting block and the swing block are not rigidly connected, which is beneficial for the connecting block and the swing block to maintain stable contact and swinging, and is beneficial for the stable resistance and rapid reset between the clamping column and the spiral steel pipe body.

[0008] Preferably, each group of the connecting components includes two connecting seats fixed at the bottom end of the mounting frame, a support frame fixed on one side of the limiting block and a connecting column fixed between the two connecting seats, a slider is fixed on the top of the support frame, and the slider is slidably sleeved on the two connecting columns, and the two support frames are provided with a synchronization component for driving the two support frames to move relative to or toward each other along the bottom end of the mounting frame; and through the setting of the connecting column and the support frame, the two limiting blocks maintain guided movement at the bottom end of the mounting frame to avoid offset of the two limiting blocks during movement, which is beneficial to the stable movement of the two limiting blocks, thereby stably limiting the spiral steel pipe body in the two limiting grooves and multiple groups of clamping components.

[0009] Preferably, the synchronization assembly includes two synchronization frames fixedly sleeved on the outside of the two support frames and a first rack and a second rack respectively fixed at one end of the two synchronization frames, and the first rack and the second rack are symmetrically staggered on the two synchronization frames, a transmission column is rotatably connected inside the mounting frame, and a first gear matching the first rack and the second rack is sleeved on the outside of the transmission column, a servo motor is fixed on the top of the mounting frame, and the first gear is used to drive the transmission column to rotate; and the first gear is located between the first rack and the second rack, and is meshed with each other, so that the rotation of the first gear is meshed with the first rack and the second rack to ensure synchronous movement of the two support frames.

[0010] Preferably, one end of the two synchronous racks is also provided with a sliding groove for inserting the first rack and the second rack, and the size of the sliding groove is adapted to the first rack and the second rack; and the sliding groove is arranged so that a circular structure is maintained between the two synchronous racks and the first rack and the second rack, thereby ensuring the stability of the first rack and the second rack between the two synchronous racks, which is conducive to the normal operation of the whole.

[0011] Preferably, the stabilizing assembly includes two cleaning frames symmetrically slidably mounted on the spiral steel pipe body, a second gear sleeved on the outside of the transmission column, and two fixed frames symmetrically fixed on the mounting frame, and one end of the two fixed frames is respectively mounted with a third rack and a fourth rack matching the second gear, and a support arm is fixed on the opposite side of the third rack and the fourth rack, and the bottom of the support arm is mounted on one side of the cleaning frame, and an adjustment assembly is provided at the bottom end of the support arm for driving the distance between the cleaning frame and the support arm to adjust; and the two cleaning frames are respectively located at the front end of the two limiting blocks, and the two cleaning frames move laterally along the outside of the spiral steel pipe body, so that the two cleaning frames and the two limiting blocks maintain alternation horizontally and vertically, and the lengths of the third rack and the fourth rack are different from those of the first rack and the second rack, so that when the two limiting blocks are close to the outside of the spiral steel pipe body, the two cleaning frames pass through the front end of the two limiting blocks to avoid mutual interference between the cleaning frames and the limiting blocks.

[0012] Preferably, a guide block is also fixed to the bottom end of the fixed frame, and the top ends of the third rack and the fourth rack are provided with guide grooves for inserting the guide block; and under the setting of the guide block, the fourth rack and the third rack are kept stable at the bottom end of the mounting frame, ensuring that the third rack and the fourth rack can maintain stable meshing transmission with the second gear.

[0013] Preferably, the adjustment assembly includes an adjustment block fixed on one side of the cleaning frame and an adjustment slot provided at the bottom end of the support arm for the adjustment block to slide. A first screw hole communicating with the interior of the adjustment slot is provided on one side of the support arm, and a plurality of second screw holes are provided on one side of the adjustment block. An adjustment bolt is provided on the support arm, and the adjustment bolt is screwed into a second screw hole corresponding to the first screw hole through the first screw hole. This is conducive to adjusting the distance between the cleaning frame and the support arm, so that the cleaning frame maintains stable contact with the spiral steel pipe body, thereby being able to meet the use requirements of spiral steel pipe bodies of more different diameters.

[0014] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0015] 1. Through the setting of multiple clamping columns, relative extrusion between the multiple clamping columns and the spiral steel pipe body can be achieved, so that the concave and convex parts form the same spiral curvature, which is beneficial for the spiral steel pipe body to maintain the matching of curvature in the two limiting grooves, and can prevent the limiting block from slipping in the fixture, improve the accurate positioning of the fixture on the test position of the spiral steel pipe, and is beneficial for the spiral steel pipe body to perform a stable drop hammer test.

[0016] 2. Through the arrangement of the connecting block, the swing block and the supporting column, the arc at one end of the connecting block can be in point contact with one end of the swing block, so that they can float with each other. At the same time, a U-shaped socket is formed in the swing block, so that there is a shaking gap between the swing block and the supporting column, which plays a floating role and is conducive to maintaining good push and swing between each other, so that the clamping column and the spiral steel pipe body maintain stable contact.

[0017] 3. Through the setting of the sleeve and the spring, the direct friction between the clamping column and the limiting block can be reduced, which can prevent the surface of the clamping column from being damaged due to friction after long-term use. The spring itself has elasticity, so that the connecting block and the swing block are not rigidly connected, which is conducive to maintaining stable contact and swing between the connecting block and the swing block, ensuring the normal extension and contraction of the clamping column in the limiting groove.

[0018] 4. Through the setting of the synchronization component, the two limiting blocks and the two first gears can be used for synchronous movement, which can reduce unnecessary energy transfer, thereby improving the force transmission efficiency of the equipment, thereby reducing the time required for clamping and cleaning the spiral steel pipe body.

[0019] 5. Through the setting of the stabilizing component, when the two limiting blocks are close to the outside of the spiral steel pipe body, the two cleaning frames can pass through the front end of the two limiting blocks, so that the two cleaning frames and the two limiting blocks maintain horizontal and vertical alternation, which is used to clean the particulate impurities near the limiting groove of the spiral steel pipe body, so that the multiple clamping columns and the limiting groove are in stable contact with the spiral steel pipe body, further improving the stability of the spiral steel pipe body in the limiting groove.

[0020] 6. By adjusting the setting of the component, it is convenient to adjust the distance between the cleaning frame and the support arm, so that the cleaning frame and the spiral steel pipe body maintain stable contact, thereby meeting the use needs of spiral steel pipe bodies of different diameters and increasing the convenience of using the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the disassembly and assembly of the sleeve and the clamping column of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the assembly of the swing block and the support column of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the synchronization component of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the stabilizing assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the regulating component of the present invention.

[0029] Description of reference numerals:

[0030] 1. Spiral steel pipe body; 11. Limiting block; 12. Limiting groove; 13. Mounting frame;

[0031] 2. Clamping assembly; 21. Mounting slot; 22. Clamping column; 23. Connecting block; 24. Swinging block; 25. Support column; 26. Spring; 27. Sleeve;

[0032] 3. Connecting assembly; 31. Connecting column; 32. Support frame; 33. Connecting seat; 34. Sliding block;

[0033] 4. Synchronous assembly; 41. Synchronous frame; 42. First rack; 43. Second rack; 44. Slide; 45. First gear; 46. Servo motor; 47. Transmission column;

[0034] 5. Stabilizing assembly; 51. Second gear; 52. Third rack; 53. Fourth rack; 54. Cleaning frame; 55. Support arm; 56. Guide groove; 57. Guide block; 58. Fixed frame;

[0035] 6. Adjustment assembly; 61. Adjustment block; 62. Adjustment slot; 63. Second screw hole; 64. First screw hole; 65. Adjustment bolt. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] The present invention provides Figure 1-Figure 5 The illustrated positioning and anti-dropping fixture for steel pipe drop weight test comprises: a spiral steel pipe body 1, a mounting frame 13 and two limiting blocks 11, and one side of the two limiting blocks 11 is inwardly recessed to form a limiting groove 12 for limiting the spiral steel pipe body 1;

[0038] Multiple groups of clamping components 2 are used to form the same curvature as the outside of the spiral steel pipe body 1, and support the spiral steel pipe body 1 at multiple points in the limiting groove 12. Each group of clamping components 2 includes a clamping column 22 slidably installed in the limiting groove 12, a mounting groove 21 opened in the limiting block 11, and a support column 25 fixed in the mounting groove 21. A swing block 24 is installed on the outside of the support column 25. A connecting block 23 is fixed at one end of the clamping column 22, and the connecting block 23 is located in the mounting groove 21 and contacts one side of the mounting groove 21. A stabilizing component 5 is provided on the mounting frame 13 for stabilizing the spiral steel pipe body. The particulate impurities on the surface of the body 1 are processed, and multiple groups of clamping components 2, limiting blocks 11 and the spiral steel pipe body 1 are in stable contact. Two groups of connecting components 3 are provided on the mounting frame 13, which are used to push the two limiting blocks 11 and the stabilizing component 5 to move synchronously and staggered, and drive the multiple groups of clamping components 2 and the spiral steel pipe body 1 to be relatively squeezed; a sleeve 27 for the sliding of the clamping column 22 is also fixed in the limiting block 11, one end of the sleeve 27 extends into the mounting groove 21 and is fixed with a boss, a spring 26 is installed between the boss and the connecting block 23, and the spring 26 is sleeved on the outside of the clamping column 22.

[0039] Each set of connection components 3 includes two connecting seats 33 fixed at the bottom end of the mounting frame 13, a support frame 32 fixed on one side of the limiting block 11, and a connecting column 31 fixed between the two connecting seats 33. A slider 34 is fixed to the top of the support frame 32, and the slider 34 is slidably sleeved on the two connecting columns 31. Both support frames 32 are provided with a synchronization component 4 for driving the two support frames 32 to move relative to or toward each other along the bottom end of the mounting frame 13.

[0040] The synchronization assembly 4 includes two synchronization frames 41 fixedly sleeved on the outside of the two support frames 32 and a first rack 42 and a second rack 43 respectively fixed on one end of the two synchronization frames 41, and the first rack 42 and the second rack 43 are symmetrically staggered on the two synchronization frames 41. A transmission column 47 is rotatably connected in the mounting frame 13, and a first gear 45 matching the first rack 42 and the second rack 43 is sleeved on the outside of the transmission column 47. A servo motor 46 is fixed on the top of the mounting frame 13, and the first gear 45 is used to drive the transmission column 47 to rotate; one end of the two synchronization frames 41 is also provided with a slide groove 44 for inserting the first rack 42 and the second rack 43, and the size of the slide groove 44 is adapted to the first rack 42 and the second rack 43.

[0041] When the spiral steel pipe body 1 needs to be positioned to prevent it from falling off, the spiral steel pipe body 1 is first placed between the two limiting blocks 11, and the spiral steel pipe body 1 passes through the stabilizing assembly 5, and is driven by the servo motor 46 to drive the transmission column 47 to rotate, and then the transmission column 47 rotates to drive the first gear 45 to rotate synchronously, at this time, the first gear 45 rotates to mesh and transmit it with the second rack 43 and the synchronous frame 41, which is used to drive the two synchronous frames 41 to slide relative to or toward each other, and the two synchronous frames 41 move to respectively penetrate and slide the two slide grooves 44 opened on one side with one end of the second rack 43 and one end of the first rack 42, and the two synchronous frames 41 move to drive the two support frames 32 to slide relative to each other, and the two support frames 32 move to drive the two sliders 34 to slide synchronously along the connecting column 31, so that the two limiting blocks 11 approach the outside of the spiral steel pipe body 1 under the relative movement of the two support frames 32, and as the two limiting blocks 11 move and alternate horizontally and vertically between the stabilizing assembly 5, and through the two limiting blocks 11 to the spiral The outside of the spiral steel pipe body 1 is brought close to each other, and the two limiting grooves 12 are restricted to the outside of the spiral steel pipe body 1. Subsequently, multiple clamping columns 22 all conflict with the outside of the spiral steel pipe body 1, and then relative extrusion is formed between the multiple clamping columns 22 and the spiral steel pipe body 1, pushing the multiple clamping columns 22 along the limiting grooves 12 and the sleeve 27 to move into the installation groove 21. Multiple connecting blocks 23 contact and push the multiple swing blocks 24, so that the swing blocks 24 swing around the outside of the support column 25, thereby achieving relative extrusion between the multiple clamping columns 22 and the spiral steel pipe body 1, so that the multiple clamping columns 22 are in a concave-convex state, so that the multiple clamping columns 22 form a spiral curvature at the recessed position that is the same as the outside of the spiral steel pipe body 1, which is beneficial for the spiral steel pipe body 1 to maintain the matching of the curvature in the two limiting grooves 12, and can prevent the limiting blocks 11 from slipping in the fixture, improve the accurate positioning of the fixture on the test position of the spiral steel pipe, and is beneficial for the spiral steel pipe body 1 to perform a stable drop hammer test.

[0042] refer to Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the stabilizing component 5 includes two cleaning frames 54 symmetrically slidably mounted on the spiral steel pipe body 1, a second gear 51 sleeved on the outside of the transmission column 47, and two fixed frames 58 symmetrically fixed on the mounting frame 13, and one end of the two fixed frames 58 is respectively mounted with a third rack 52 and a fourth rack 53 matching the second gear 51, and a support arm 55 is fixed on the opposite side of the third rack 52 and the fourth rack 53, and the bottom of the support arm 55 is mounted on one side of the cleaning frame 54, and an adjusting component 6 is provided at the bottom end of the support arm 55 for driving the distance between the cleaning frame 54 and the support arm 55 to be adjusted; a guide block 57 is also fixed at the bottom end of the fixed frame 58, and a guide groove 56 for inserting the guide block 57 is provided at the top end of the third rack 52 and the fourth rack 53.

[0043] Through the above technical solution:

[0044] When the synchronization component 4 is driving and driving the limiting block 11, first the transmission column 47 rotates to drive the second gear 51 to rotate, and the second gear 51 rotates to engage and transmit it with the third rack 52 and the fourth rack 53, so as to drive the two support arms 55 to slide relative to or toward each other. At this time, the fourth rack 53 and the third rack 52 slide between the guide groove 56 opened on their top and the guide block 57, and the two support arms 55 move to drive the two cleaning racks 54 to slide at the front end of the two limiting blocks 11, and when the two limiting blocks 11 are close to the outside of the spiral steel pipe body 1, the two cleaning racks 54 pass through the front end of the two limiting blocks 11, so that the two cleaning racks 54 and the two limiting blocks 11 maintain horizontal and vertical alternation, and then the two cleaning racks 54 are used to clean the outside of the spiral steel pipe body 1, and clean the particulate impurities near the limiting groove 12 of the spiral steel pipe body 1, so that the multiple clamping columns 22 and the limiting groove 12 are in stable contact with the spiral steel pipe body 1, which further improves the stability of the spiral steel pipe body 1 in the limiting groove 12.

[0045] refer to Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the adjustment assembly 6 includes an adjustment block 61 fixed on one side of the cleaning frame 54 and an adjustment groove 62 provided at the bottom end of the support arm 55 for the adjustment block 61 to slide. A first screw hole 64 communicating with the interior of the adjustment groove 62 is provided on one side of the support arm 55, and a plurality of second screw holes 63 are provided on one side of the adjustment block 61. An adjustment bolt 65 is provided on the support arm 55, and the adjustment bolt 65 is screwed into the second screw hole 63 corresponding to the first screw hole 64 through the first screw hole 64.

[0046] Through the above technical solution:

[0047] When adjusting the distance between the cleaning frame 54 and the spiral steel pipe body 1, first turn the adjusting bolt 65 to screw it into the adjusting bolt 65 and one of the second screw holes 63 and disengage it, and push the cleaning frame 54 to slide the adjusting block 61 installed on one side along the adjusting groove 62, so that the distance between the cleaning frame 54 and the support arm 55 is adjusted, and the cleaning frame 54 is moved closer to the outside of the spiral steel pipe body 1. At this time, the adjusting bolt 65 is re-screwed into the first screw hole 64 and screwed and fixed with the other second screw hole 63, and the adjusting block 61 is kept stable in the adjusting groove 62, so that the distance between the cleaning frame 54 and the support arm 55 is adjusted, so that the cleaning frame 54 and the spiral steel pipe body 1 maintain stable contact, thereby being able to meet the use requirements of spiral steel pipe bodies 1 of more different diameters, thereby increasing the convenience of using the clamp.

[0048] The above only describes certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, a person skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A positioning and anti-dropping fixture for a steel pipe drop weight test, characterized in that: include: A spiral steel pipe body (1), a mounting frame (13) and two limiting blocks (11), wherein one side of the two limiting blocks (11) is recessed inwards to form a limiting groove (12) for limiting the spiral steel pipe body (1); A plurality of groups of clamping assemblies (2) are used to form the same arc as the outside of the spiral steel pipe body (1) and support the spiral steel pipe body (1) at multiple points in the limiting groove (12). Each group of the clamping assemblies (2) comprises a clamping column (22) slidably mounted in the limiting groove (12), a mounting groove (21) provided in the limiting block (11), and a support column (25) fixed in the mounting groove (21). A swing block (24) is mounted on the outside of the support column (25). A connecting block (23) is fixed at one end of the clamping column (22), and the connecting block (23) is fixed to the outside of the support column (25). 23) is located in the installation groove (21) and is in contact with one side of the installation groove (21), the installation frame (13) is provided with a stabilizing component (5) for processing particulate impurities on the surface of the spiral steel pipe body (1) and stabilizing the contact between the plurality of clamping components (2), the limiting block (11) and the spiral steel pipe body (1), the installation frame (13) is provided with two groups of connecting components (3) for driving the two limiting blocks (11) and the stabilizing component (5) to move synchronously and staggered, and driving the plurality of clamping components (2) and the spiral steel pipe body (1) to be relatively squeezed; Each group of the connection components (3) comprises two connection seats (33) fixed at the bottom end of the mounting frame (13), a support frame (32) fixed at one side of the limiting block (11), and a connection column (31) fixed between the two connection seats (33); a slider (34) is fixed at the top end of the support frame (32), and the slider (34) is slidably sleeved on the two connection columns (31); and a synchronization component (4) is provided on the two support frames (32) for driving the two support frames (32) to move relative to or towards each other along the bottom end of the mounting frame (13); The synchronization assembly (4) comprises two synchronization frames (41) fixedly sleeved on the outside of the two support frames (32) and a first rack (42) and a second rack (43) respectively fixed on one end of the two synchronization frames (41), and the first rack (42) and the second rack (43) are symmetrically arranged on the two synchronization frames (41); a transmission column (47) is rotatably connected inside the mounting frame (13); a first gear (45) matching with the first rack (42) and the second rack (43) is sleeved on the outside of the transmission column (47); a servo motor (46) is fixed on the top of the mounting frame (13), and the first gear (45) is used to drive the transmission column (47) to rotate; The stabilizing component (5) comprises two cleaning frames (54) symmetrically slidably mounted on the spiral steel pipe body (1), a second gear (51) sleeved on the outside of the transmission column (47), and two fixing frames (58) symmetrically fixed on the mounting frame (13), and a third rack (52) and a fourth rack (53) matched with the second gear (51) are respectively mounted on one end of the two fixing frames (58), and a support arm (55) is fixed on the opposite side of the third rack (52) and the fourth rack (53), and the bottom of the support arm (55) is mounted on one side of the cleaning frame (54), and an adjusting component (6) is provided at the bottom end of the support arm (55) for driving the distance between the cleaning frame (54) and the support arm (55) to be adjusted.

2. A positioning and anti-dropping fixture for steel pipe drop weight test according to claim 1, characterized in that: A sleeve (27) for sliding the clamping column (22) is also fixed in the limiting block (11), one end of the sleeve (27) extends into the mounting groove (21) and is fixed with a boss, a spring (26) is installed between the boss and the connecting block (23), and the spring (26) is sleeved on the outside of the clamping column (22).

3. A positioning and anti-dropping fixture for steel pipe drop weight test according to claim 1, characterized in that: One end of the two synchronous racks (41) is also provided with a slide groove (44) for the first rack (42) and the second rack (43) to be inserted, and the size of the slide groove (44) is adapted to the first rack (42) and the second rack (43).

4. A positioning and anti-dropping fixture for steel pipe drop weight test according to claim 1, characterized in that: A guide block (57) is also fixed to the bottom end of the fixed frame (58), and guide grooves (56) for inserting the guide block (57) are provided at the top ends of the third rack (52) and the fourth rack (53).

5. The positioning and anti-dropping fixture for steel pipe drop weight test according to claim 1, characterized in that: The adjustment assembly (6) comprises an adjustment block (61) fixed to one side of the cleaning frame (54) and an adjustment slot (62) provided at the bottom end of the support arm (55) for the adjustment block (61) to slide. A first screw hole (64) communicating with the interior of the adjustment slot (62) is provided on one side of the support arm (55). A plurality of second screw holes (63) are provided on one side of the adjustment block (61). An adjustment bolt (65) is provided on the support arm (55), and the adjustment bolt (65) passes through the first screw hole (64) and is screwed into a second screw hole (63) corresponding to the first screw hole (64).

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