Small-caliber stainless steel seamless steel pipe with high bending property

Abstract

The utility model discloses a stainless steel seamless steel tube with small caliber and high bending performance, which belongs to the technical field of seamless steel tubes and comprises a tube body, a clamping rod is mounted at one end of the tube body, a rotating cylinder is rotatably connected to the other end of the tube body, a stop lever is mounted on the outer surface of the rotating cylinder, and a reset mechanism is further mounted on the outer surface of the rotating cylinder. And a protective cylinder is arranged outside the rotating cylinder. According to the small-caliber stainless steel seamless steel pipe with the high bending performance, the protective barrel and the rotating barrel are made to rotate synchronously through the extrusion mechanism, the protective barrel is rotated, the rotating barrel drives the stop lever to clamp the clamping rod, and therefore the two pipe bodies are fixed together, and the effect of being convenient to assemble and disassemble is achieved; the joint is subjected to double-layer protection through the protection cylinder and the rotating cylinder which can rotate at will, so that the protection effect on the joint is improved, and the problems that an existing joint is inconvenient to assemble and disassemble, no other protection exists at the joint, and the joint is prone to being damaged when subjected to external force are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a small-caliber stainless steel seamless pipe with high bending performance. Background Art

[0002] Stainless steel seamless pipe is a long strip of steel with a hollow cross-section and no seams around it. It has good corrosion resistance and can resist corrosion from weak corrosive media such as air, steam, water, and chemically corrosive media such as acids, alkalis, and salts. In stainless steel seamless pipes, austenitic stainless steel has good bending properties due to its good mechanical properties. After solution heat treatment, it can be bent to produce steel pipes with higher bending properties, which can adapt to different use environments. Seamless steel pipes are generally used to form connecting pipes, such as power pipes, which can protect internal wires.

[0003] Existing stainless steel seamless pipes are generally composed of multiple sections of steel pipes. During installation, the multiple sections of steel pipes need to be connected together to form a longer pipeline. Most of the existing ones are connected by flanges and bolts, which is not convenient for installation and disassembly, and there is no other protection at the connection, which is easily damaged when subjected to external force. In order to solve this technical problem, the utility model proposes a small-diameter stainless steel seamless pipe with high bending performance. Utility Model Content

[0004] The main purpose of the utility model is to provide a small-caliber stainless steel seamless pipe with high bending performance, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A small-diameter, high-bending-performance stainless steel seamless pipe comprises a pipe body, a clamping rod is installed at one end of the pipe body, a rotating cylinder is rotatably connected to the other end of the pipe body, a baffle rod is installed on the outer surface of the rotating cylinder, a reset mechanism is also installed on the outer surface of the rotating cylinder, a protective cylinder is arranged outside the rotating cylinder, a supporting mechanism is installed on the inner wall of the protective cylinder, an extrusion mechanism is arranged in the middle of the protective cylinder, and a sealing sleeve is installed at the end of the pipe body.

[0007] Preferably, a limiting ring is fixedly connected to the outer surface of the tube body, and the outer surface of the limiting ring is slidably connected to the protective tube.

[0008] Preferably, a sliding groove is provided on the inner wall of the rotating cylinder, a fixing block is slidably connected to the inner wall of the sliding groove, and one side surface of the fixing block is fixedly connected to the tube body.

[0009] Preferably, the reset mechanism includes a first magnetic block, the outer surface of which is fixedly connected to the tube body, the outer surface of which is slidably connected to the rotating cylinder, a second magnetic block is fixedly installed on the outer surface of the rotating cylinder, the inner wall of the second magnetic block is slidably connected to a limiting rod, and the outer surface of the limiting rod is fixedly connected to the first magnetic block.

[0010] Preferably, the support mechanism comprises a support block, one side of the support block is fixedly connected to the protective tube, the inner wall of the support block is inlaid with a ball, and the outer surface of the ball is in contact with the tube body.

[0011] Preferably, the extrusion mechanism comprises a fixed box, the outer surface of the fixed box is fixedly connected to the protective tube, the inner wall of the fixed box is slidably connected to a round block, and the inner wall of the round block is fixedly connected to the extrusion rod.

[0012] Preferably, the outer surface of the rotating cylinder is provided with a rough surface, the extrusion rod penetrates the bottom of the fixed box and faces the rough surface, the outer surface of the extrusion rod is sleeved with a spring, one end of the spring is fixedly connected to the round block, and the other end of the spring is fixedly connected to the fixed box, and a pressing sleeve is provided above the extrusion rod, and the outer surface of the pressing sleeve is fixedly connected to the protective cylinder.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, by arranging components such as a protective cylinder and an extrusion mechanism, the extrusion mechanism enables the protective cylinder and the rotating cylinder to rotate synchronously, and the protective cylinder is rotated so that the rotating cylinder drives the blocking rod to clamp the clamping rod, thereby fixing the two tube bodies together. When dismantling, the blocking rod on the rotating cylinder is driven by the extrusion mechanism and the protective cylinder to no longer restrict the clamping rod, and the two tube bodies are directly pulled apart, thereby achieving the effect of easy installation and disassembly. The protective cylinder and the rotating cylinder that can be rotated at will are used to perform double-layer protection at the joint to increase the protection effect at the joint, thereby solving the existing problems of inconvenience in installation and disassembly, and no other protection at the connection, which is easy to be damaged when subjected to external force.

[0015] In the utility model, by providing components such as a reset mechanism and a squeeze mechanism, the second magnetic block and the first magnetic block can attract each other. During installation, the first magnetic block and the second magnetic block can drive the rotating cylinder block to quickly reset under the action of the mutual attraction, so as to increase the convenience of use. By providing a ball to support the tube body, the stability of the protective tube during rotation is increased to prevent it from shaking, and at the same time the friction between the protective tube and the tube body is reduced, thereby achieving the effect of facilitating rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a small-diameter, high-bending-performance stainless steel seamless pipe of the utility model;

[0017] Figure 2 This is a cross-sectional view of a protective tube in a small-caliber, high-bending-performance stainless steel seamless pipe of the utility model;

[0018] Figure 3 This is a cross-sectional view of a rotating cylinder in a small-caliber, high-bending-performance stainless steel seamless pipe of the utility model;

[0019] Figure 4 This is a cross-sectional view of a protective tube in a small-caliber, high-bending-performance stainless steel seamless pipe of the utility model;

[0020] Figure 5 It is a cross-sectional view of a fixing box in a small-caliber stainless steel seamless pipe with high bending performance according to the utility model.

[0021] In the figure: 1. tube body; 2. clamping rod; 3. rotating cylinder; 4. blocking rod; 5. reset mechanism; 501. first magnetic block; 502. second magnetic block; 503. limiting rod; 6. protective cylinder; 7. limiting ring; 8. supporting mechanism; 801. supporting block; 802. ball; 9. extrusion mechanism; 901. fixing box; 902. round block; 903. extrusion rod; 904. spring; 905. pressing sleeve; 10. rough surface; 11. sliding groove; 12. fixing block; 13. sealing sleeve. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-5 As shown, a small-diameter high-bending performance stainless steel seamless pipe includes a pipe body 1, a clamping rod 2 is installed at one end of the pipe body 1, and the shape of the clamping rod 2 is similar to a Z shape. The other end of the pipe body 1 is rotatably connected to a rotating cylinder 3, and a blocking rod 4 is installed on the outer surface of the rotating cylinder 3. The shape of the blocking rod 4 is L-shaped, and a sliding groove 11 is opened on the inner wall of the rotating cylinder 3. The inner wall of the sliding groove 11 is slidably connected with a fixed block 12, and one side of the fixed block 12 is fixedly connected to the pipe body 1. After the blocking rod 4 clamps the clamping rod 2, its end presses against the fixed block 12, thereby achieving closure and preventing the clamping rod 2 from sliding out.

[0024] A reset mechanism 5 is also installed on the outer surface of the rotating cylinder 3, and the reset mechanism 5 includes a first magnetic block 501. The outer surface of the first magnetic block 501 is fixedly connected to the tube body 1, and the outer surface of the first magnetic block 501 is slidably connected to the rotating cylinder 3. A second magnetic block 502 is fixedly installed on the outer surface of the rotating cylinder 3, and the inner wall of the second magnetic block 502 is slidably connected to a limiting rod 503. The outer surface of the limiting rod 503 is fixedly connected to the first magnetic block 501. The first magnetic block 501 and the second magnetic block 502 can attract each other. The second magnetic block 502 is limited by the limiting rod 503, thereby limiting the rotating cylinder 3 to increase the stability of the rotating cylinder 3 and prevent the rotating cylinder 3 from sliding off the tube body 1.

[0025] A protective cylinder 6 is provided on the outside of the rotating cylinder 3. A limiting ring 7 is fixedly connected to the outer surface of the tube body 1. The outer surface of the limiting ring 7 is slidably connected to the protective cylinder 6. The limiting ring 7 is used to limit the protective cylinder 6 to increase the stability of the protective cylinder 6 and prevent it from deflecting. A supporting mechanism 8 is installed on the inner wall of the protective cylinder 6. The supporting mechanism 8 includes a supporting block 801. One side of the supporting block 801 is fixedly connected to the protective cylinder 6. The inner wall of the supporting block 801 is inlaid with a ball 802. The ball 802 can rotate at any angle inside the supporting block 801. The outer surface of the ball 802 is in contact with the tube body 1. The ball 802 is arranged to hold the tube body 1 to increase the stability of the protective cylinder 6 during rotation and prevent it from shaking. At the same time, the friction between the protective cylinder 6 and the tube body 1 is reduced, thereby achieving the effect of facilitating rotation.

[0026] A squeezing mechanism 9 is provided in the middle of the protective cylinder 6. The squeezing mechanism 9 includes a fixed box 901. The outer surface of the fixed box 901 is fixedly connected to the protective cylinder 6. A round block 902 is slidably connected to the inner wall of the fixed box 901. A squeezing rod 903 is fixedly connected to the inner wall of the round block 902. A rough surface 10 is provided on the outer surface of the rotating cylinder 3. The squeezing rod 903 penetrates the bottom of the fixed box 901 and faces the rough surface 10. A spring 904 is sleeved on the outer surface of the squeezing rod 903. One end of the spring 904 is fixedly connected to the round block 902. The other end of the spring 904 is fixedly connected to the fixed box 901, and a pressing sleeve 905 is arranged above the extrusion rod 903. The outer surface of the pressing sleeve 905 is fixedly connected to the protective tube 6. The pressing sleeve 905 is made of rubber and can be deformed. The spring 904 can give the round block 902 an upward elastic force so that the extrusion rod 903 does not contact the rough surface 10 in the absence of external force. A sealing sleeve 13 is installed at the end of the tube body 1. After the installation is completed, the sealing sleeve 13 is squeezed between the two tube bodies 1 to increase the sealing.

[0027] The first and second magnetic blocks 501 and 502 are moved away from each other, and the second and third magnetic blocks 502 are moved away from each other, so that the locking rod 2 on the other tube body 1 is inserted between the rotating tube 3 and the protective tube 6. When the end of the locking rod 2 passes over the locking rod 4, the pressing sleeve 905 is released. Under the action of the mutual attraction between the first and second magnetic blocks 501 and 502, the rotating tube 3 is driven to reset. The rotating tube 3 drives the locking rod 4 to reset, and the locking rod 4 clamps the end of the locking rod 2, thereby fixing the two tube bodies 1 together, achieving the effect of easy fixing. Similarly, when removing, the rotating tube 3 is rotated by the squeezing mechanism 9 and the protective tube 6, thereby driving the locking rod 4 to no longer restrict the locking rod 2, and the two tube bodies 1 can be directly pulled apart, achieving the effect of easy removal.

[0028] During daily use during installation, double-layer protection is provided at the joint by means of the protective cylinder 6 and the rotating cylinder 3. When external force acts on the protective cylinder 6, the protective cylinder 6 will rotate under the action of pressure, thereby changing the original route of the pressure to prevent the pressure from directly impacting the protective cylinder 6, thereby achieving the effect of reducing the impact force. The ball 802 is provided to support the tube body 1 to increase the stability of the protective cylinder 6 during rotation and prevent it from shaking, while reducing the friction between the protective cylinder 6 and the tube body 1, thereby achieving the effect of facilitating rotation.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A small-caliber, high-bending-performance stainless steel seamless pipe, comprising a pipe body (1), characterized in that: A clamping rod (2) is installed at one end of the tube body (1), and a rotating cylinder (3) is rotatably connected to the other end of the tube body (1). A blocking rod (4) is installed on the outer surface of the rotating cylinder (3). A reset mechanism (5) is also installed on the outer surface of the rotating cylinder (3). A protective cylinder (6) is arranged outside the rotating cylinder (3), and a supporting mechanism (8) is installed on the inner wall of the protective cylinder (6). An extrusion mechanism (9) is arranged in the middle of the protective cylinder (6). A sealing sleeve (13) is installed at the end of the tube body (1).

2. The small-diameter high-bending-performance stainless steel seamless pipe according to claim 1 is characterized in that: The outer surface of the tube body (1) is fixedly connected to a limit ring (7), and the outer surface of the limit ring (7) is slidably connected to the protective tube (6).

3. The small-diameter high-bending-performance stainless steel seamless pipe according to claim 2 is characterized in that: The inner wall of the rotating cylinder (3) is provided with a sliding groove (11), the inner wall of the sliding groove (11) is slidably connected with a fixing block (12), and one side surface of the fixing block (12) is fixedly connected to the tube body (1).

4. The small-diameter high-bending-performance stainless steel seamless pipe according to claim 3 is characterized in that: The reset mechanism (5) comprises a first magnetic block (501), the outer surface of the first magnetic block (501) is fixedly connected to the tube body (1), the outer surface of the first magnetic block (501) is slidably connected to the rotating cylinder (3), a second magnetic block (502) is fixedly mounted on the outer surface of the rotating cylinder (3), the inner wall of the second magnetic block (502) is slidably connected to a limiting rod (503), and the outer surface of the limiting rod (503) is fixedly connected to the first magnetic block (501).

5. The small-diameter high-bending-performance stainless steel seamless pipe according to claim 4 is characterized in that: The support mechanism (8) comprises a support block (801), one side of which is fixedly connected to the protective tube (6), and the inner wall of the support block (801) is inlaid with a ball (802), and the outer surface of the ball (802) is in contact with the tube body (1).

6. The small-diameter high-bending-performance stainless steel seamless pipe according to claim 5 is characterized in that: The squeezing mechanism (9) comprises a fixed box (901), the outer surface of which is fixedly connected to the protective tube (6), the inner wall of which is slidably connected to a round block (902), and the inner wall of which is fixedly connected to a squeezing rod (903).

7. The small-diameter high-bending-performance stainless steel seamless pipe according to claim 6 is characterized in that: The outer surface of the rotating cylinder (3) is provided with a rough surface (10), the squeezing rod (903) penetrates the bottom of the fixed box (901) and faces the rough surface (10), the outer surface of the squeezing rod (903) is sleeved with a spring (904), one end of the spring (904) is fixedly connected to the round block (902), and the other end of the spring (904) is fixedly connected to the fixed box (901), and a pressing sleeve (905) is provided above the squeezing rod (903), and the outer surface of the pressing sleeve (905) is fixedly connected to the protective cylinder (6).

Images