Special-shaped seamless steel tube

Abstract

The utility model discloses a special-shaped seamless steel tube, which relates to the technical field of seamless steel tubes and comprises a seamless steel tube body, one end of the seamless steel tube body is provided with an inserting part, one end of the inserting part is fixedly connected with a first sealing gasket, and the other end of the seamless steel tube body is provided with a sleeving part. A second sealing gasket is arranged on the inner wall of the sleeving part, and an assembling inserting groove is formed in the surface of the inserting part. Due to the arrangement of the eccentric wheel, when the seamless steel pipe is assembled, the eccentric wheel is only required to be inserted into the assembling slot and pressed again, the eccentric wheel is inserted into the fastening slot, the stud is rotated, the eccentric wheel pushes the inserting part to move towards the interior of the sleeving part, and therefore fastening connection is achieved. One side of the eccentric wheel is meshed with the interior of the limiting groove after rotating by half circle, the angle of the eccentric wheel can be limited, rotation of the eccentric wheel is avoided, and compared with conventional bolt matched flange connection, only half circle rotating of the stud is needed, the connection speed is higher, and use is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a seamless steel pipe technical field, concretely relates to a special-shaped seamless steel pipe. BACKGROUND

[0002] Special-shaped seamless steel pipes are seamless steel pipes with non-circular cross-sectional shapes. Unlike traditional round seamless steel pipes, their cross sections can be square, rectangular, oval, polygonal, or various specially designed complex shapes to meet the diversified needs in specific engineering and industrial applications. The cross-sectional shape of special-shaped seamless steel pipes can be customized according to actual application. For example, in building structures, square or rectangular cross-section steel pipes can be easily connected with other structural members to achieve more stable frame structures. In some mechanical devices requiring compact layout, oval or polygonal steel pipes can better utilize space and avoid the space waste problem that may exist in round steel pipes.

[0003] The existing seamless steel pipes are connected by welding flanges on both ends of the steel pipe and then using bolts to fix the flanges. This connection method requires repeated tightening of multiple bolts, which is time-consuming and inconvenient to use. SUMMARY

[0004] The utility model provides a special-shaped seamless steel pipe to solve the problems raised in the background.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A special-shaped seamless steel pipe includes a seamless steel pipe body, one end of the seamless steel pipe body is provided with a plug-in part, and one end of the plug-in part is fixedly connected with a first sealing gasket.

[0007] The further improvement of the utility model technical scheme is that the other end of the seamless steel pipe body is provided with a sleeve part, and the inner wall of the sleeve part is provided with a second sealing gasket.

[0008] The further improvement of the utility model technical scheme is that the surface of the plug-in part is provided with an assembly slot, and the bottom of the inner cavity of the assembly slot is provided with a fastening slot.

[0009] The further improvement of the utility model technical scheme is that one side of the fastening slot is provided with a limiting groove, the inner wall of the fastening slot is overlapped with an eccentric wheel, and the top of the eccentric wheel is threadedly connected with a stud.

[0010] The further improvement of the utility model technical scheme is that the diameter of the eccentric wheel is smaller than the width of the inner cavity of the assembly slot, and the surface of the stud is inserted into the inside of the sleeve part.

[0011] The further improvement of the technical scheme of the utility model lies in that the radius of the covered area when the eccentric wheel rotates is smaller than the radius of the fastening slot, and the width of the surface opening of the assembling slot is larger than the diameter of the stud

[0012] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0013] The utility model provides a special-shaped seamless steel pipe, through the setting of the eccentric wheel, when assembling the seamless steel pipe, only the eccentric wheel is inserted into the assembling slot, then pressed again, the eccentric wheel is inserted into the fastening slot, the stud is rotated, the eccentric wheel pushes the plug-in part to move into the sleeving part, so as to realize fastening connection, after rotating half a circle, one side of the eccentric wheel is engaged into the inside of the limiting groove, the angle of the eccentric wheel can be limited, the eccentric wheel is prevented from rotating, compared with the conventional bolt cooperation flange plate connection, only half a circle of the stud is rotated, the connection speed is faster, and the utility model is more convenient to use. ACCURACY OF DRAWINGS

[0014] Fig. 1 It is a front view structural schematic diagram of the utility model;

[0015] Fig. 2 It is an end structure schematic diagram of the utility model;

[0016] Fig. 3 It is an end structure schematic diagram of the utility model;

[0017] Fig. 4 It is a sectional view structural schematic diagram of the utility model;

[0018] Fig. 5 It is a sectional view structural schematic diagram of the utility model;

[0019] Fig. 6 It is an eccentric wheel and stud structure schematic diagram of the utility model.

[0020] In the drawing: 1, seamless steel pipe body; 2, plug-in part; 3, first sealing gasket; 4, sleeving part; 5, second sealing gasket; 6, assembling slot; 7, fastening slot; 8, limiting groove; 9, eccentric wheel; 10, stud. CONCRETE IMPLEMENTATION

[0021] The utility model will be further explained in detail in connection with the embodiments as follows:

[0022] Embodiment 1

[0023] As Figs. 1-6As shown, the utility model provides a kind of special-shaped seamless steel tube, including seamless steel tube body 1, the one end of seamless steel tube body 1 is provided with splicing portion 2, the one end of splicing portion 2 is fixedly connected with first sealing pad 3, the other end of seamless steel tube body 1 is provided with sleeve portion 4, the inner wall of sleeve portion 4 is provided with second sealing pad 5, the surface of splicing portion 2 is equipped with assembly slot 6, and the bottom of assembly slot 6 inner cavity is equipped with fastening slot 7.

[0024] In the embodiment, by pre-assembling seamless steel pipe before leaving factory, stud 10 is inserted into sleeve portion 4, eccentric wheel 9 is placed to the lower end of stud 10, stud 10 is rotated, stud 10 is threadedly connected with eccentric wheel 9, when assembling on site, the angle of eccentric wheel 9 is adjusted, the splicing portion 2 of another seamless steel pipe is inserted into the sleeve portion 4 of the seamless steel pipe, and eccentric wheel 9 is inserted into assembly slot 6, when eccentric wheel 9 moves above fastening slot 7, stud 10 is pressed downwards, eccentric wheel 9 is inserted into fastening slot 7, stud 10 is rotated, eccentric wheel rotates half a circle, under the action that eccentric wheel 9 contacts with the inner wall of fastening slot 7, splicing portion 2 is moved to the inside of sleeve portion 4, first sealing pad 3 is tightly abutted with second sealing pad 5, the connection of seamless steel pipe is sealed, and the setting of limiting groove 8 can limit eccentric wheel 9 after rotating half a circle, to avoid that the connection of seamless steel pipe is loosened due to the rotation of eccentric wheel, compared with conventional assembling mode, the time required for on-site assembly is shorter, and it is more convenient to use.

[0025] Embodiment 2

[0026] As Figs. 1-6 As shown, on the basis of embodiment 1, the utility model provides a kind of technical scheme: preferably, including seamless steel tube body 1, the one end of seamless steel tube body 1 is provided with splicing portion 2, the one end of splicing portion 2 is fixedly connected with first sealing pad 3, the other end of seamless steel tube body 1 is provided with sleeve portion 4, the inner wall of sleeve portion 4 is provided with second sealing pad 5, the surface of splicing portion 2 is equipped with assembly slot 6, and the bottom of assembly slot 6 inner cavity is equipped with fastening slot 7.

[0027] In the embodiment, when assembling on site, the angle of eccentric wheel 9 is adjusted, the splicing portion 2 of another seamless steel pipe is inserted into the sleeve portion 4 of the seamless steel pipe, and eccentric wheel 9 is inserted into assembly slot 6, when eccentric wheel 9 moves above fastening slot 7, stud 10 is pressed downwards, eccentric wheel 9 is inserted into fastening slot 7, stud 10 is rotated, eccentric wheel rotates half a circle, and two seamless steel pipes are assembled.

[0028] Embodiment 3

[0029] As Figs. 1-6As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, it includes a seamless steel pipe body 1, one end of the seamless steel pipe body 1 is provided with an insertion part 2, one end of the insertion part 2 is fixedly connected with a first sealing gasket 3, the other end of the seamless steel pipe body 1 is provided with a sleeve part 4, the inner wall of the sleeve part 4 is provided with a second sealing gasket 5, a limiting groove 8 is opened on one side of the fastening slot 7, an eccentric wheel 9 is overlapped on the inner wall of the fastening slot 7, a stud 10 is threadedly connected to the top of the eccentric wheel 9, the diameter of the eccentric wheel 9 is smaller than the width of the inner cavity of the assembly slot 6, the surface of the stud 10 is inserted into the inside of the sleeve part 4, the radius of the area covered by the eccentric wheel 9 when it rotates is smaller than the radius of the fastening slot 7, and the width of the opening on the surface of the assembly slot 6 is larger than the diameter of the stud 10.

[0030] In this embodiment, the seamless steel pipe is pre-assembled before leaving the factory. The stud 10 is inserted into the sleeve part 4, and the eccentric wheel 9 is placed at the lower end of the stud 10. The stud 10 is rotated to make the stud 10 and the eccentric wheel 9 threadedly connected. During on-site assembly, the angle of the eccentric wheel 9 is adjusted so that the insertion part 2 of another seamless steel pipe is inserted into the sleeve part 4 of this seamless steel pipe, and the eccentric wheel 9 is inserted into the assembly slot 6. When the eccentric wheel 9 moves to the top of the fastening slot 7, the stud 10 is pressed down so that the eccentric wheel 9 is inserted into the fastening slot 7, and then fastened.

[0031] The working principle of this special-shaped seamless steel pipe will be explained in detail below.

[0032] like Figs. 1-6 As shown, before the seamless steel pipe leaves the factory, it is pre-assembled. The stud 10 is inserted into the sleeve part 4. After placing the eccentric wheel 9 at the lower end of the stud 10, the stud 10 is rotated to thread it into the eccentric wheel 9. During on-site assembly, the angle of the eccentric wheel 9 is adjusted so that the insertion part 2 of another seamless steel pipe is inserted into the sleeve part 4 of this seamless steel pipe, and the eccentric wheel 9 is inserted into the assembly slot 6. When the eccentric wheel 9 moves above the fastening slot 7, the stud 10 is pressed down to insert the eccentric wheel 9. After tightening the slot 7, rotate the stud 10 to make the eccentric wheel rotate half a turn. Under the action of the eccentric wheel 9 contacting the inner wall of the tightening slot 7, the insertion part 2 is pushed to move into the inside of the sleeve part 4, so that the first sealing gasket 3 and the second sealing gasket 5 are tightly abutted, sealing the seamless steel pipe connection. At the same time, the setting of the limiting groove 8 can limit the eccentric wheel 9 after it rotates half a turn, preventing the seamless steel pipe connection from loosening due to the rotation of the eccentric wheel. Compared with the conventional assembly method, the on-site assembly time is shorter and it is easier to use.

[0033] The utility model has made the detailed description to the utility model generally above, but can make some modification or improvement to it on the basis of the utility model, and this is obvious to the general skilled person in the technical field. Therefore, the modification or improvement without departing from the utility model's thought spirit, all are within the utility model's protection scope.

Claims

1. A special-shaped seamless steel pipe comprising a seamless steel pipe body (1), characterized by: The one end of the seamless steel pipe body (1) is provided with a plug-in part (2), one end of the plug-in part (2) is fixedly connected with a first sealing pad (3), the other end of the seamless steel pipe body (1) is provided with a sleeve part (4), the inner wall of the sleeve part (4) is provided with a second sealing pad (5), the surface of the plug-in part (2) is provided with an assembly slot (6), the bottom of the inner cavity of the assembly slot (6) is provided with a fastening slot (7), one side of the fastening slot (7) is provided with a limiting groove (8), the inner wall of the fastening slot (7) is overlapped with an eccentric wheel (9), the top of the eccentric wheel (9) is screwedly connected with a stud (10).

2. A special-shaped seamless steel pipe according to claim 1, characterized in that: The diameter of the eccentric wheel (9) is smaller than the width of the inner cavity of the assembly slot (6), and the surface of the stud (10) is plugged into the sleeve part (4).

3. A profiled seamless steel tube according to claim 2, characterized in that: When the eccentric wheel (9) rotates, the radius of the covered area is smaller than the radius of the fastening slot (7), and the width of the surface opening of the assembly slot (6) is greater than the diameter of the stud (10).

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