Clamp for machining steel pipes

Abstract

The utility model relates to the technical field of clamp, concretely is a kind of clamp for steel pipe processing, including installation rack, the bottom of installation rack is rotatably connected with three gyro wheels by pivot, the outer wall of installation rack is also fixedly installed with servo motor, the output of servo motor is fixedly connected with installation disc by bolt, the upper end of installation disc is fixedly installed with the detection mechanism that can detect whether the inner wall of steel pipe leaks, the outer wall of installation rack is also fixedly connected with two first electric telescopic arms, two first electric telescopic arms are fixedly installed with the limiting mechanism that can be fixedly clamped to steel pipe between, fill with liquid water and cooperate with rubber ball cover, utilize the intuitive judgment whether there is leakage in steel pipe welding place by water leakage phenomenon, compared with traditional detection mode operation is more simple, detection result is more intuitive, in cooling aspect, liquid water circulates between clamp and steel pipe, can quickly take away the heat generated by welding, accurately control steel pipe temperature.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a fixture for steel pipe processing. Background Technology

[0002] In the field of steel pipe manufacturing and processing, welding is a key process for connecting steel pipe components, and its quality directly affects the sealing performance, pressure resistance, and service life of the pipeline system. Especially in industries such as petrochemicals, natural gas transportation, and water conservancy projects, even tiny leaks in the welded joints can lead to media leakage, causing environmental pollution, resource waste, and even safety accidents. Traditional steel pipe welding quality inspection methods, such as air pressure testing and ultrasonic flaw detection, can detect some defects, but they suffer from problems such as complex operation, low inspection efficiency, and high equipment costs. At the same time, the high temperature generated during welding can easily cause changes in the metal structure of the weld area, resulting in defects such as deformation and cracks. Conventional cooling methods, such as air cooling or natural cooling, have limited effectiveness and are difficult to control precisely.

[0003] Currently, there is a lack of efficient equipment on the market that can integrate welding quality inspection and cooling functions. Traditional clamps only serve to fix steel pipes and cannot meet the dual needs of modern steel pipe processing for quality inspection and process optimization. Therefore, it is urgent to develop an innovative clamp for steel pipe processing that can achieve post-weld defect detection and real-time cooling in a simple and efficient way, thereby improving the quality and efficiency of steel pipe processing, reducing production costs, and meeting the industry's stringent requirements for steel pipe manufacturing processes.

[0004] A search revealed prior art publication number CN111002249A, which discloses a clamping structure for processing threaded steel pipes. The structure includes a base, a first driving device, a second driving device, a first telescopic rod, a second telescopic rod, a first steel pipe clamp, a second steel pipe clamp, a steel pipe placement seat, a first slider, and a second slider. The first driving device is mounted on the left side of the upper end of the base, and the second driving device is mounted on the right side of the upper end of the base. The first and second driving devices are respectively connected to the first and second telescopic rods, which are also connected to the first and second steel pipe clamps. The first and second sliders are correspondingly mounted on the lower ends of the first and second steel pipe clamps, and a steel pipe placement seat is installed between the first and second steel pipe clamps. This invention can clamp threaded steel pipes more securely through the combined action of suction cups and clamps, and has wider adaptability.

[0005] Therefore, based on the above search and combined with existing methods, the above solutions only clamp and fix the steel pipe, and cannot detect whether there are leaks after the steel pipe is welded, nor can they cool it down. Therefore, we propose a clamp for steel pipe processing. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a fixture for steel pipe processing, thus solving the problems mentioned below.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A steel pipe processing fixture includes an installation frame. Three rollers are rotatably connected to the bottom of the installation frame via a rotating shaft. A servo motor is fixedly installed on the outer wall of the installation frame. An installation disc is bolted to the output end of the servo motor. A detection mechanism for checking for leaks in the inner wall of the steel pipe is fixedly installed on the upper end of the installation disc. Two first electric telescopic arms are also fixedly connected to the outer wall of the installation frame. A limiting mechanism for clamping and fixing the steel pipe is fixedly installed between the two first electric telescopic arms.

[0009] As a further aspect of this solution, the detection mechanism includes a connecting disc, which is fixedly connected to the mounting disc via multiple first elastic telescopic arms. A rubber corrugated sleeve is also fixedly connected between the connecting disc and the mounting disc, and the rubber corrugated sleeve is filled with liquid water. A water inlet is provided at the center of the upper end of the connecting disc, and a second elastic telescopic arm is fixedly connected to the inner wall of the water inlet. A second connecting block is fixedly connected to the upper end of the second elastic telescopic arm, and the bottom of the second connecting block abuts against the upper end of the water inlet. A first connecting block is fixedly connected to the upper end of the second connecting block via a connecting post.

[0010] As a further aspect of this solution, multiple elastic ropes are fixedly connected to the outer wall of the connecting column, a rubber ball sleeve is fixedly connected between the first connecting block and the second connecting block, each elastic rope is fixedly connected to the inner wall of the rubber ball sleeve, a cylinder is fixedly connected to the upper end of the first connecting block, the cylinder and the first connecting block are fixedly connected through multiple connecting pipes, a second electric telescopic arm is fixedly connected to the top of the inner wall of the cylinder, a piston is fixedly connected to the bottom of the second electric telescopic arm, and the outer wall of the piston abuts against the inner wall of the cylinder.

[0011] As a further aspect of this solution, the limiting mechanism includes a fixed ring, which is fixedly connected to the bottom of two first electric telescopic arms, and the fixed ring is fixedly connected to the connecting disc through multiple third elastic telescopic arms.

[0012] As a further aspect of this solution, a second fixed disk is rotatably connected inside the fixed ring. The second fixed disk has multiple rectangular grooves inside, and a slider with a reset function is slidably connected to the inner wall of each rectangular groove. A first fixed disk is rotatably connected to the upper end of the second fixed disk.

[0013] As a further aspect of this solution, the outer wall of the first fixed disc is provided with multiple curved grooves, and the upper end of the slider is fixedly connected with an abutment rod. The outer wall of each abutment rod abuts against the inner wall of a nearby curved groove, and the upper end of the abutment rod is fixedly connected with an abutment arm.

[0014] Beneficial effects

[0015] This utility model provides a fixture for steel pipe processing. Compared with the prior art, it has the following advantages:

[0016] By using liquid water filling in conjunction with a rubber ball sleeve, the leakage phenomenon can be used to intuitively determine whether there are leaks at the weld of the steel pipe. Compared with traditional detection methods, it is simpler to operate and the detection results are more intuitive. In terms of cooling, the liquid water circulates between the clamp and the steel pipe, which can quickly remove the heat generated by welding, accurately control the temperature of the steel pipe, effectively avoid problems such as deformation and cracks caused by high temperature, improve processing efficiency, and reduce labor costs. Attached Figure Description

[0017] Figure 1 This is a front view of the main body of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the main rubber corrugated sleeve of this utility model;

[0019] Figure 3 This is a schematic diagram of the position and structure of the third elastic telescopic arm of the main body of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the main cylinder of this utility model;

[0021] Figure 5 This is a schematic diagram of the main limiting mechanism of this utility model.

[0022] In the diagram: 1. Mounting frame; 2. Push rod; 3. Roller; 4. Servo motor; 5. Mounting disc; 6. Rubber corrugated sleeve; 7. First electric telescopic arm; 8. Second fixed disc; 9. First elastic telescopic arm; 10. Connecting disc; 11. First fixed disc; 12. Second elastic telescopic arm; 13. Water inlet; 14. Rubber ball sleeve; 15. Cylinder; 16. Second electric telescopic arm; 17. Piston; 18. First connecting block; 19. Elastic rope; 20. Second connecting block; 21. Curved groove; 22. Abutting arm; 23. Abutting rod; 24. Slider; 25. Rectangular groove; 26. Fixed ring; 27. Third elastic telescopic arm; 101. Detection mechanism; 201. Limiting mechanism. Detailed Implementation

[0023] 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.

[0024] Example 1: Please refer to Figures 1-2 As shown, this utility model provides a technical solution: a steel pipe processing fixture, including a mounting frame 1. The bottom of the mounting frame 1 is rotatably connected to three rollers 3 via a rotating shaft. Each roller 3 has multiple weight-reducing holes inside, which are distributed circumferentially on the outer wall of the roller 3. The operator can move the mounting frame 1 through the rollers 3, which is convenient and quick. A servo motor 4 is also fixedly installed on the outer wall of the mounting frame 1. The output end of the servo motor 4 is fixedly connected to a mounting disc 5 via bolts. A detection mechanism 101 for detecting whether the inner wall of the steel pipe is leaking is fixedly installed on the upper end of the mounting disc 5. The detection mechanism 101 can also fix the steel pipe. Two first electric telescopic arms 7 are also fixedly connected to the outer wall of the mounting frame 1. The two first electric telescopic arms 7 are symmetrically distributed on the outer wall of the mounting frame 1. A limiting mechanism 201 for fixing and clamping the steel pipe is fixedly installed between the two first electric telescopic arms 7. A push rod 2 is fixedly connected to the end of the mounting frame 1 away from the servo motor 4.

[0025] Example 2: Please refer to Figures 1-5As shown, the detection mechanism 101 includes a connecting disc 10, which is fixedly connected to the mounting disc 5 by multiple first elastic telescopic arms 9. The multiple first elastic telescopic arms 9 are circumferentially distributed between the mounting disc 5 and the connecting disc 10. A rubber corrugated sleeve 6 is also fixedly connected between the connecting disc 10 and the mounting disc 5. The rubber corrugated sleeve 6 is made of rubber, which has good corrosion resistance and high temperature resistance, and is durable. A retaining ring is also fixedly connected to the upper end of the connecting disc 10. The rubber corrugated sleeve 6 is filled with liquid water, and the retaining ring can effectively collect the liquid water leaking from the water inlet 13. A water inlet is provided in the center of the upper end of the connecting disc 10. The inner wall of the water inlet 13 is fixedly connected to a second elastic telescopic arm 12. The upper end of the second elastic telescopic arm 12 is fixedly connected to a second connecting block 20. The bottom of the second connecting block 20 abuts against the upper end of the water inlet 13. The upper end of the second connecting block 20 is fixedly connected to a first connecting block 18 through a connecting post. Multiple elastic ropes 19 are fixedly connected to the outer wall of the connecting post. A rubber ball sleeve 14 is fixedly connected between the first connecting block 18 and the second connecting block 20. Each elastic rope 19 is fixedly connected to the inner wall of the rubber ball sleeve 14. The elastic ropes 19 are made of fluororubber. Fluororubber has a stable molecular structure, a smooth surface, and a low coefficient of friction with the inner wall of the steel pipe.

[0026] A cylinder 15 is fixedly connected to the upper end of the first connecting block 18. The cylinder 15 and the first connecting block 18 are fixedly connected by multiple connecting pipes. The multiple connecting pipes are circumferentially distributed between the first connecting block 18 and the cylinder 15. A second electric telescopic arm 16 is fixedly connected to the top of the inner wall of the cylinder 15. A piston 17 is fixedly connected to the bottom of the second electric telescopic arm 16. The outer wall of the piston 17 abuts against the inner wall of the cylinder 15. A rubber ring is fixedly connected to the outer wall of the piston 17. The rubber ring can enhance the sealing between the piston 17 and the cylinder 15.

[0027] The limiting mechanism 201 includes a fixed ring 26, which is fixedly connected to the bottom of two first electric telescopic arms 7. The fixed ring 26 is fixedly connected to the connecting disc 10 by multiple third elastic telescopic arms 27, which are circumferentially distributed between the fixed ring 26 and the connecting disc 10. A second fixed disc 8 is rotatably connected inside the fixed ring 26. The second fixed disc 8 has multiple rectangular grooves 25 inside, which are circumferentially distributed on the outer wall of the second fixed disc 8. Each rectangular groove 25 has a slider 24 with a reset function slidably connected to its inner wall. Specifically, the rectangular groove 25 has a sliding groove inside, and the slider 24 is slidably connected to the inner wall of the sliding groove. Both the inner wall of the sliding groove and the outer wall of the slider 24 are coated with lubricating oil. When the slider 24... 4. When moving along the inner wall of the slide, the rectangular groove 25 can limit the slider 24 through the slide and also has a guiding function, which improves the stability of the slider 24 when moving in the inner wall of the rectangular groove 25. The lubricating oil can also reduce the friction between the slider 24 and the rectangular groove 25. A first spring is fixedly connected between the slider 24 and the inner wall of the rectangular groove 25. The upper end of the second fixed disk 8 is rotatably connected to the first fixed disk 11. The outer wall of the first fixed disk 11 is provided with multiple curved grooves 21. The curved grooves 21 are "curved". The multiple curved grooves 21 are circumferentially distributed on the outer wall of the first fixed disk 11. The upper end of the slider 24 is fixedly connected to the abutment rod 23. The outer wall of each abutment rod 23 abuts against the inner wall of a nearby curved groove 21. The upper end of the abutment rod 23 is fixedly connected to the abutment arm 22.

[0028] Working principle: In use, the two first electric telescopic arms 7 are activated, pulling the second fixed disc 8 through the fixed ring 26. The second fixed disc 8 will then drive all the third elastic telescopic arms 27 to extend. Note that at this time, all the first elastic telescopic arms 9 will also be pulled through the connecting disc 10. Therefore, the first elastic telescopic arms 9 are already at their longest and cannot be extended further. When the distance between the second fixed disc 8 and the connecting disc 10 is sufficient to insert the steel pipe, the steel pipe is placed on the upper end of the connecting disc 10. At this time, the rubber ball sleeve 14 is located inside the steel pipe. Then, the first fixed disc 11 is rotated, and the first fixed disc 11 will... The moving abutment rod 23 moves within the inner wall of the curved groove 21. At this time, all the abutment rods 23 are in a diffused state. All the sliders 24 move within the inner wall of the rectangular groove 25. The abutment rods 23 drive all the abutment arms 22 to move. The steel pipe passes through the inside of the first fixed disc 11. During the movement of the slider 24, the first spring is compressed and stored. When the control of the first fixed disc 11 is released, the first spring drives the slider 24 to reset. The slider 24 drives the first fixed disc 11 to reset through the abutment rods 23. The abutment arms 22 abut against and fix the outer wall of the steel pipe. This can fix steel pipes of various sizes.

[0029] At this point, the abutment rod 23 has been fixed to the steel pipe. Activating the first electric telescopic arm 7 moves the second fixed disc 8 downwards via the fixed ring 26. Because the abutment rod 23 is fixed to the outer wall of the steel pipe, the steel pipe will compress the connecting disc 10. At this time, the liquid water inside the rubber corrugated sleeve 6 will enter the steel pipe through the water inlet 13. It is worth noting that when the rubber ball sleeve 14 enters the inner wall of the steel pipe, the second electric telescopic arm 16 needs to be activated to move the piston 17 downwards. The gas inside cylinder 15 enters the rubber ball sleeve 14, causing it to expand and pull all the elastic ropes 19. When the outer wall of the rubber ball sleeve 14 comes into contact with the steel pipe, the steel pipe then presses downwards against the connecting disc 10. At this point, the connecting disc 10 presses against the rubber corrugated sleeve 6, and the liquid water inside the rubber corrugated sleeve 6 pushes open the second connecting block 20 through the water inlet 13. The liquid water then enters the steel pipe through the water inlet 13. 4. Moving inside the steel pipe, when the rubber ball sleeve 14 reaches the top of the steel pipe, the squeezing of the steel pipe stops. The servo motor 4 can be started to drive the mounting disc 5 to rotate. The mounting disc 5 drives the upper part of the whole to rotate with the steel pipe, which can detect the outer wall of the steel pipe. If water droplets are found, it means that there is a hole in the steel pipe. When no problem is found, the first electric telescopic arm 7 can be started to drive the fixed ring 26 to move upward. The steel pipe will gradually reduce the squeezing of the connecting disc 10. When the second elastic telescopic arm 12 drives the rubber ball sleeve 14 to reset, the liquid water inside the steel pipe will be discharged into the rubber corrugated sleeve 6 through the water inlet 13. When the first elastic telescopic arm 9 resets, it will drive the rubber corrugated sleeve 6 to suck the liquid water inside the steel pipe. When all the liquid water returns to the rubber corrugated sleeve 6, the outer wall of the steel pipe can be welded. According to the above operation, the steel pipe can be cooled and the welded steel pipe can be checked for holes.

[0030] After the test is completed, the rubber corrugated sleeve 6 is in the reset state. Then, rotate the first fixed disc 11. According to the above working principle, when all the abutting arms 22 disengage from the outer wall of the steel pipe, the steel pipe can be taken out.

[0031] 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.

[0032] 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 steel pipe processing fixture, comprising a mounting frame (1), characterized in that: The bottom of the mounting frame (1) is rotatably connected to three rollers (3) via a rotating shaft. A servo motor (4) is also fixedly installed on the outer wall of the mounting frame (1). The output end of the servo motor (4) is fixedly connected to a mounting disc (5) via bolts. A detection mechanism (101) for detecting whether the inner wall of the steel pipe is leaking is fixedly installed on the upper end of the mounting disc (5). Two first electric telescopic arms (7) are also fixedly connected to the outer wall of the mounting frame (1). A limiting mechanism (201) for fixing and clamping the steel pipe is fixedly installed between the two first electric telescopic arms (7).

2. The steel pipe processing fixture according to claim 1, characterized in that: The detection mechanism (101) includes a connecting disc (10), which is fixedly connected to the mounting disc (5) by multiple first elastic telescopic arms (9). A rubber corrugated sleeve (6) is also fixedly connected between the connecting disc (10) and the mounting disc (5). The rubber corrugated sleeve (6) is filled with liquid water. A water inlet (13) is provided at the center of the upper end of the connecting disc (10). A second elastic telescopic arm (12) is fixedly connected to the inner wall of the water inlet (13). A second connecting block (20) is fixedly connected to the upper end of the second elastic telescopic arm (12). The bottom of the second connecting block (20) abuts against the upper end of the water inlet (13). A first connecting block (18) is fixedly connected to the upper end of the second connecting block (20) through a connecting column.

3. The steel pipe processing fixture according to claim 2, characterized in that: Multiple elastic ropes (19) are fixedly connected to the outer wall of the connecting column. A rubber ball sleeve (14) is fixedly connected between the first connecting block (18) and the second connecting block (20). Each elastic rope (19) is fixedly connected to the inner wall of the rubber ball sleeve (14). A cylinder (15) is fixedly connected to the upper end of the first connecting block (18). The cylinder (15) and the first connecting block (18) are fixedly connected through multiple connecting pipes. A second electric telescopic arm (16) is fixedly connected to the top of the inner wall of the cylinder (15). A piston (17) is fixedly connected to the bottom of the second electric telescopic arm (16). The outer wall of the piston (17) abuts against the inner wall of the cylinder (15).

4. The steel pipe processing fixture according to claim 1, characterized in that: The limiting mechanism (201) includes a fixed ring (26), which is fixedly connected to the bottom of two first electric telescopic arms (7), and the fixed ring (26) is fixedly connected to the connecting disc (10) through multiple third elastic telescopic arms (27).

5. The steel pipe processing fixture according to claim 4, characterized in that: The fixed ring (26) is rotatably connected to a second fixed disk (8). The second fixed disk (8) has multiple rectangular slots (25) inside. Each rectangular slot (25) has a slider (24) with a reset function slidably connected to its inner wall. The upper end of the second fixed disk (8) is rotatably connected to a first fixed disk (11).

6. The steel pipe processing fixture according to claim 5, characterized in that: The outer wall of the first fixed disc (11) is provided with multiple curved grooves (21), and the upper end of the slider (24) is fixedly connected with an abutting rod (23). The outer wall of each abutting rod (23) abuts against the inner wall of a nearby curved groove (21), and the upper end of the abutting rod (23) is fixedly connected with an abutting arm (22).

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