High-toughness low-temperature-resistant seamless steel pipe

Abstract

The utility model relates to a seamless steel pipe technical field especially is a kind of high toughness low temperature resistant seamless steel pipe, including steel pipe main part, fixed ring is set between the steel pipe main part, the quick-release assembly for quick fixing and disassembling is set to the fixed ring outside, support assembly for supporting the inboard of steel pipe main part is set in the steel pipe main part. The utility model is by outwardly wrenching second connecting plate drive fixed block and first connecting plate together outwardly rotate, in turn drive the rotary block of fourth connecting block both ends together rotate, the principle of cam mechanism is used to outwardly rotate second connecting plate so that rotary plate loosens and is conveniently opened outward, at this moment, the fixed ring is sleeved in the connecting place outside between steel pipe main part and is reinforced secondly, then subsequently inwardly press second connecting plate to extrude rotary plate, rotary plate is matched with fixed plate and extrudes fixed ring together and tightens, the connection stability between steel pipe main body is strengthened, this structure is simple to operate, time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe technology, and in particular to a high-strength, high-toughness, low-temperature resistant seamless steel pipe. Background Technology

[0002] Seamless steel pipes are steel pipes formed by piercing a single round steel bar, and have no weld seams on their surface. Based on the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and jacking pipes, etc. They are mainly used as oil and geological drilling pipes, cracking pipes for petrochemicals, boiler tubes, bearing tubes, and high-precision structural steel pipes for automobiles, tractors, and aviation.

[0003] In the existing technology, when installing and connecting seamless steel pipes, one end of the seamless steel pipe is usually threaded onto the other end of the seamless steel pipe. This is inconvenient to operate on some large seamless steel pipes, and the stability of the connection is lacking. After long-term use, the connection is prone to loosening, and it is very troublesome to remove the threaded connection when it rusts. This is not only time-consuming and labor-intensive, but also increases the workload of workers. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] A high-strength, high-toughness, low-temperature resistant seamless steel pipe includes a steel pipe body, a fixing ring between the steel pipe bodies, a quick-release assembly for quick fixing and disassembly on the outside of the fixing ring, and a support assembly for supporting the inner side of the steel pipe body.

[0006] As an improvement to the above technical solution, the quick-release assembly includes a fixing member fixedly connected to the outside of the fixing ring, a second connecting block rotatably connected to the inner side of one end of the fixing member, a first rotating shaft provided between the second connecting block and the fixing member, a fixing plate fixedly connected to the other end of the second connecting block, and a third connecting block fixedly connected to the other end of the fixing plate.

[0007] As an improvement to the above technical solution, a first connecting block is rotatably connected to the inner side of the other end of the fixing member. The first connecting block and the fixing member are provided with the same first rotating shaft. A rotating plate is fixedly connected to the other end of the first connecting block. A fourth connecting block is fixedly connected to the other end of the rotating plate. A rotating block is rotatably connected to the outer side of the fourth connecting block. A second rotating shaft is provided between the rotating block and the fourth connecting block. A first connecting plate is fixedly connected to the outer side of the rotating block. A fixing block is fixedly connected to the other end of the first connecting plate. A second connecting plate is fixedly connected to the outer side of the fixing block.

[0008] As an improvement to the above technical solution, a connecting rod is symmetrically rotatably connected between the fixed block and the third connecting block.

[0009] As an improvement to the above technical solution, the support assembly includes a support plate slidably connected inside the steel pipe body, a handle fixedly connected to the outside of the support plate, and several support rods fixedly connected inside the support plate.

[0010] As an improvement to the above technical solution, a number of first locking blocks are fixedly connected at equal intervals around one end of the steel pipe body, and a second locking block that matches the first locking blocks is fixedly connected at equal intervals around the other end of the steel pipe body.

[0011] The beneficial effects of this utility model are:

[0012] The first locking block at one end of one steel pipe body and the second locking block at one end of another steel pipe body are aligned and locked together for initial fixation. Then, by pulling the second connecting plate outward, the fixing block and the first connecting plate rotate outward together, which in turn drives the rotating blocks at both ends of the fourth connecting block to rotate. The rotating blocks, the first connecting plate, the fourth connecting block, the third connecting block, the connecting rod, and the second connecting plate form a cam mechanism. By using the principle of the cam mechanism to rotate the second connecting plate outward, the pressure on the rotating plate is reduced, making the rotating plate loose and easy to open outward. At this time, the fixing ring is placed on the outside of the connection between the steel pipe bodies for secondary reinforcement. Then, the second connecting plate is pressed inward, and the second connecting plate drives the fixing block to rotate together. Using the cam principle, the second connecting plate squeezes the rotating plate. The rotating plate and the fixing plate cooperate to squeeze and tighten the fixing ring together, which enhances the connection stability between the steel pipe bodies. This structure is simple to operate and saves time and effort. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the first card block in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the fixing component in this utility model;

[0016] Figure 4 This is a schematic diagram of the quick-release component in this utility model;

[0017] Figure 5 This is a schematic diagram of the support rod in this utility model.

[0018] Reference numerals in the attached drawings: 1. Steel pipe body; 2. Fixing ring; 3. Support plate; 4. Pull handle; 5. First locking block; 6. Second locking block; 7. Support rod; 8. Fixing component; 9. First connecting block; 10. Second connecting block; 11. First rotating shaft; 12. Fixing plate; 13. Rotating plate; 14. Third connecting block; 15. Connecting rod; 16. Fourth connecting block; 17. Rotating block; 18. Second rotating shaft; 19. First connecting plate; 20. Fixing block; 21. Second connecting plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0020] Please refer to Figures 1-5 A high-strength, high-toughness, low-temperature resistant seamless steel pipe includes a steel pipe body 1, a fixing ring 2 between the steel pipe bodies 1, a quick-release assembly for quick fixing and disassembly on the outside of the fixing ring 2, and a support assembly for supporting the inside of the steel pipe body 1.

[0021] Specifically, the main body 1 of the steel pipe is made of high alloy structural steel, which has the characteristics of high strength, excellent low temperature toughness and hardenability, and good fatigue resistance. The main bodies 1 of the steel pipe can be quickly connected and installed through quick-release components, and the connection stability is enhanced by quick-release components. The structural stability of the main body 1 of the steel pipe is enhanced by placing support components inside the main body 1, which prevents the two ends of the main body 1 of the steel pipe from deforming due to external impact when not in use. The fixing ring 2 can be made of alloy structural steel, which has the characteristics of moderate strength, hardness and toughness, good processing performance and low cost.

[0022] Please refer to Figures 1-5The quick-release assembly includes a fixing member 8 fixedly connected to the outside of the fixing ring 2. A second connecting block 10 is rotatably connected to the inner side of one end of the fixing member 8. A first rotating shaft 11 is provided between the second connecting block 10 and the fixing member 8. A fixing plate 12 is fixedly connected to the other end of the second connecting block 10. A third connecting block 14 is fixedly connected to the other end of the fixing plate 12. A first connecting block 9 is rotatably connected to the inner side of the other end of the fixing member 8. The same first rotating shaft 11 is provided between the first connecting block 9 and the fixing member 8. A rotating plate 13 is fixedly connected to the other end of the first connecting block 9. A fourth connecting block 16 is fixedly connected to the other end of the rotating plate 13. A rotating block 17 is rotatably connected to the outer side of the fourth connecting block 16. A second rotating shaft 18 is provided between the rotating block 17 and the fourth connecting block 16. A first connecting plate 19 is fixedly connected to the outer side of the rotating block 17. A fixing block 20 is fixedly connected to the other end of the first connecting plate 19. A second connecting plate 21 is fixedly connected to the outer side of the fixing block 20. A connecting rod 15 is symmetrically rotatably connected between the fixing block 20 and the third connecting block 14.

[0023] Specifically, by pulling the second connecting plate 21 outward, the fixing block 20 and the first connecting plate 19 rotate outward together, which in turn drives the rotating blocks 17 at both ends of the fourth connecting block 16 to rotate together. The rotating blocks 17, the first connecting plate 19, the fourth connecting block 16, the third connecting block 14, the connecting rod 15, and the second connecting plate 21 form a cam mechanism. By rotating the second connecting plate 21 outward with the help of the cam mechanism, the second connecting plate 21 will lack the squeezing force on the rotating plate 13, thus making the rotating plate 13 loose and easy to open outward. At this time, the fixing ring 2 is put on the outside of the connection between the steel pipe bodies 1 for secondary reinforcement. Then, the second connecting plate 21 is pressed inward, and the fixing block 20 rotates together with the second connecting plate 21. With the help of the cam principle, the rotating plate 13 is squeezed by the second connecting plate 21. The rotating plate 13 and the fixing plate 12 cooperate to squeeze and tighten the fixing ring 2 together, which strengthens the connection stability between the steel pipe bodies 1. This structure is simple to operate and saves time and effort.

[0024] Please refer to Figures 1-5 The support assembly includes a support plate 3 that is slidably connected inside the steel pipe body 1, a handle 4 that is fixedly connected to the outside of the support plate 3, and several support rods 7 that are fixedly connected inside the support plate 3.

[0025] Specifically, the support plate 3 can be easily placed into the steel pipe body 1 by pulling the handle 4, and the support rods 7 are spliced ​​together to provide stronger support for the support plate 3, thereby improving the deformation resistance of the steel pipe body 1.

[0026] Please refer to Figures 1-5 A number of first locking blocks 5 are fixedly connected at equal intervals around one end of the steel pipe body 1, and a second locking block 6 that matches the first locking blocks 5 is fixedly connected at equal intervals around the other end of the steel pipe body 1.

[0027] Specifically, the first fixing is performed by aligning the first locking block 5 at one end of the main body 1 of the steel pipe and the second locking block 6 at one end of the main body 1 of the other steel pipe.

[0028] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A high-strength, high-toughness, low-temperature resistant seamless steel pipe, comprising a steel pipe body (1), characterized in that: Fixing rings (2) are provided between the steel pipe bodies (1). A quick-release assembly for quick fixing and disassembly is provided on the outside of the fixing rings (2). A support assembly for supporting the inside of the steel pipe bodies (1) is provided inside the steel pipe bodies (1).

2. The high-strength, high-toughness, low-temperature resistant seamless steel pipe according to claim 1, characterized in that: The quick-release assembly includes a fixing member (8) fixedly connected to the outside of the fixing ring (2). A second connecting block (10) is rotatably connected to the inner side of one end of the fixing member (8). A first rotating shaft (11) is provided between the second connecting block (10) and the fixing member (8). A fixing plate (12) is fixedly connected to the other end of the second connecting block (10). A third connecting block (14) is fixedly connected to the other end of the fixing plate (12).

3. The high-strength, high-toughness, low-temperature resistant seamless steel pipe according to claim 2, characterized in that: The other end of the fixing member (8) is rotatably connected to a first connecting block (9). The first connecting block (9) and the fixing member (8) are provided with the same first rotating shaft (11). The other end of the first connecting block (9) is fixedly connected to a rotating plate (13). The other end of the rotating plate (13) is fixedly connected to a fourth connecting block (16). The outer side of the fourth connecting block (16) is rotatably connected to a rotating block (17). The rotating block (17) and the fourth connecting block (16) are provided with a second rotating shaft (18). The outer side of the rotating block (17) is fixedly connected to a first connecting plate (19). The other end of the first connecting plate (19) is fixedly connected to a fixing block (20). The outer side of the fixing block (20) is fixedly connected to a second connecting plate (21).

4. The high-strength, high-toughness, low-temperature resistant seamless steel pipe according to claim 3, characterized in that: A connecting rod (15) is symmetrically rotatably connected between the fixed block (20) and the third connecting block (14).

5. The high-strength, high-toughness, low-temperature resistant seamless steel pipe according to claim 1, characterized in that: The support assembly includes a support plate (3) slidably connected inside the steel pipe body (1), a handle (4) fixedly connected to the outside of the support plate (3), and several support rods (7) fixedly connected inside the support plate (3).

6. The high-strength, high-toughness, low-temperature resistant seamless steel pipe according to claim 1, characterized in that: One end of the steel pipe body (1) is fixedly connected with a number of first locking blocks (5) at equal intervals around its circumference, and the other end of the steel pipe body (1) is fixedly connected with a second locking block (6) that is compatible with the first locking blocks (5).

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