Fabricated connecting piece between steel pipes of same specification and steel pipes of different specifications

Abstract

The utility model discloses an assembly type connecting piece between steel pipes of the same specification and steel pipes of different specifications, and belongs to the technical field of non-welding convenient assembly of steel structures and multi-specification pipes. The pipe clamp comprises a first pipe clamp structure composed of two semicircular components, a second pipe clamp structure composed of two L-shaped components, a first palm structure composed of two U-shaped components and a second palm structure composed of two omega-shaped components. The square tube or round tube combined connection structure achieves combined connection of square tubes or round tubes with the same specification and different specifications, is suitable for assembling two short square tubes or round tubes into a rectangular tube or a long round tube, is also suitable for combined connection between the square tubes and the round tubes, and is low in noise, environment-friendly, free of welding and free of punching.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure and non-welding convenient assembly of multi-specification pipes, and in particular relates to an assembled connecting piece between steel pipes of the same or different specifications. Background Art

[0002] Multi-specification pipes (steel structures) are widely used in equipment racks, frames in many scenes, trusses, industrial load-bearing frames and other industrial, agricultural and military fields due to their high strength and beautiful shape. These steel structures will use square tubes or round tubes. The connection between square tubes and between square tubes and round tubes is usually welded. Welding has many advantages, but also some disadvantages: some environments are strictly prohibited from opening fire; some environments require the opening fire procedure. The entire construction process from welding to painting is complicated and is also restricted by power supply voltage, power conditions and work sites. The implementation cycle is long and the professionalism is relatively strong. Due to the rapid economic development, there are fewer welders with good welding technology, resulting in uneven welding quality. On-site welding also has the problems of high noise, environmental pollution and potential fire risks. There is also a flange connection method that is not made on-site and installed on-site. This connection method must be conceived in advance and accurately measured. The production requirements are high, and there are also problems such as long cycle and inability to install at will.

[0003] Some common multi-specification pipe connectors on the market are small-sized and lightweight, and are generally used in places where the force requirements are not high. The connectors are not suitable for bearing force alone, but are combined by multiple connectors for standard pipes to bear force.

[0004] For example, patent CN220378636U provides an assembled square tube connector, which is used for assembling two or more square tubes of the same size. It is not suitable for assembling square tubes of different sizes, assembling two short square tubes into a long square tube, or assembling a square tube and a round tube. Therefore, it is necessary to invent an assembled connector between steel tubes of the same and different specifications to quickly assemble pipe fittings of different specifications and shapes. Summary of the invention

[0005] The purpose of the utility model is to solve the deficiencies of the above-mentioned background technology and to provide an assembled connector between steel pipes of the same or different specifications.

[0006] The technical solution adopted by the utility model is: an assembled connector between steel pipes of the same or different specifications, comprising a first pipe clamp structure composed of two semicircular parts, a second pipe clamp structure composed of two "L"-shaped parts, a first palm structure composed of two "U"-shaped parts, and a second palm structure composed of two "Ω"-shaped parts;

[0007] The two semi-circular components are used to fix the first round pipe hoop with screws in the first direction. The two "U"-shaped components are used to fix the first square pipe hoop with screws in the second direction, and are jointly connected with the "U"-shaped components, semi-circular components, first round pipe and first square pipe through a pin shaft in the second direction;

[0008] The two semi-circular components are used to fix the first round pipe hoop with screws in the third direction. The two "Ω"-shaped components are used to fix the second round pipe hoop with screws in the fourth direction, and are jointly connected with the "Ω"-shaped components, semi-circular components, first round pipe and second round pipe through a pin shaft in the fourth direction;

[0009] The two "L"-shaped components are used to fix the first square pipe hoop with screws in the fifth direction. The two "U"-shaped components are used to fix the second square pipe hoop with screws in the sixth direction, and are jointly connected with the "U"-shaped components, "L"-shaped components, first square pipe and second square pipe through a pin shaft in the fourth direction;

[0010] The two "L"-shaped components are used to fix the first square pipe hoop with screws in the seventh direction. The two "Ω"-shaped components are used to fix the third round pipe hoop with screws in the eighth direction, and are jointly connected with the "Ω"-shaped components, "L"-shaped components, first square pipe and third round pipe through a pin shaft in the eighth direction.

[0011] In a further preferred structure, the first pipe clamp structure includes two semi-circular components. The two semi-circular components are buckled to form a circular frame structure. First connecting bosses are respectively arranged on the upper end surface and the lower end surface of the semi-circular components. A plurality of first pin holes are opened on the first connecting bosses. First docking flanges are respectively connected above and below the two ends of the first connecting bosses. First screw through holes and first countersunk hexagon holes are opened on the first docking flanges. The two semi-circular components are attached together through the first docking flanges and fixedly connected by screws passing through the first screw through holes, first countersunk hexagon holes and nuts to form a circular frame structure. A circular hole for clamping the first round pipe hoop is opened at the center where the two semi-circular components are buckled to form a circular frame structure.

[0012] In a further preferred structure, first weight-reducing holes are opened on the sides of the two semi-circular components.

[0013] A further preferably structure, the second pipe clamp structure includes an "L" - shaped component. Two of the "L" - shaped components are buckled to form a square - frame structure. The upper and lower end faces of the "L" - shaped component are respectively provided with second connecting bosses. A plurality of second pin holes are opened on the second connecting bosses. At the upper and lower ends of both ends of the second connecting boss, second docking flanges are respectively connected. Second screw through - holes are opened on the second docking flanges. The two "L" - shaped components are attached together through the second docking flanges and fixedly connected by screws passing through the second screw through - holes and nuts to form a square - frame structure. A square hole for holding the first square - tube hoop is opened at the center formed by the two "L" - shaped components buckled together.

[0014] A further preferably structure, second weight - reducing holes are opened on the sides of the two "L" - shaped components.

[0015] A further preferably structure, the first palm structure includes two "U" - shaped components. The "U" - shaped component includes a connecting support plate. A first connecting flange is provided on one side close to the connecting support plate. A third pin hole for cooperating with the first pin hole or the second pin hole is opened on the first connecting flange. Third docking flanges are connected to the other two symmetric sides of the connecting support plate. A plurality of second hexagonal counter - sunk holes are opened on the third docking flanges. Third screw through - holes are opened in the second hexagonal counter - sunk holes along the plane direction of the first connecting flange. Third weight - reducing holes are opened on the side of the connecting support plate.

[0016] A further preferably structure, the second palm structure includes two "Ω" - shaped components. The "Ω" - shaped component includes a semi - circular side wall. A second connecting flange is provided on one side of the semi - circular side wall. A fourth pin hole for cooperating with the first pin hole or the second pin hole is opened on the second connecting flange. Fourth docking flanges are connected to both sides of the semi - circular side wall. A plurality of third hexagonal counter - sunk holes are opened on the fourth docking flanges. Fourth screw through - holes are opened in the third hexagonal counter - sunk holes along the plane direction of the second connecting flange. Fourth weight - reducing holes are opened on the semi - circular side wall.

[0017] A further preferably structure, the bottom of the first pipe clamp structure or the second pipe clamp structure is connected to a base mounting plate.

[0018] A further preferably structure, several groups of fifth pin holes with different distances between opposite sides are provided on the four sides of the base mounting plate. The several groups of fifth pin holes include two fifth pin holes with a distance between opposite sides of L1, two fifth pin holes with a distance between opposite sides of L2, and two fifth pin holes with a distance of L3. Bolt holes are provided at the four corners of the base mounting plate for fixing to the ground.

[0019] A further preferred structure is that the first direction is perpendicular to the second direction; the third direction is perpendicular to the fourth direction; the fifth direction is perpendicular to the sixth direction; the seventh direction is perpendicular to the eighth direction.

[0020] The beneficial effects of the present utility model are as follows:

[0021] The present utility model realizes the combined connection of the same specifications and different specifications of square tubes or round tubes, and is applicable to assembling two short square tubes or round tubes into a long square tube or a long round tube, and is also applicable to the combined connection between a square tube and a round tube.

[0022] The present utility model has low noise, is environmentally friendly, does not require welding or punching. Cut the materials according to the structural dimensions, and only need to install the hoop on the connected square tube or round tube with a pipe clamp structure and screws. Install the palm structure with screws at the end of the other section of the square tube, and connect the pipe clamp structure and the palm structure through a pin shaft. Moreover, a pipe clamp structure on the square tube or round tube can be connected to the palm structure in four directions.

[0023] The present utility model is assembled by combining a palm structure composed of two "U" - shaped parts or two "Ω" - shaped parts locked together and a pipe clamp structure composed of two "L" - shaped parts or two semi - circular parts locked together, and can be used to assemble structural frames of different shapes. The assembled structural frame can be extended as required, and only two different parts are needed to assemble different structural frames, and the installation and use are convenient and fast. Brief Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic diagram of the connection between the first round tube and the first square tube in an embodiment of the present utility model;

[0026] Figure 3 is a schematic diagram of the connection between the first square tube and the second square tube in an embodiment of the present utility model;

[0027] Figure 4 is a schematic diagram of the connection between the first round tube and the second round tube in an embodiment of the present utility model;

[0028] Figure 5 is a schematic diagram of the connection between the first square tube and the third round tube in an embodiment of the present utility model;

[0029] Figure 6 is a schematic diagram of the first pipe clamp structure in an embodiment of the present utility model;

[0030] Figure 7 is a schematic diagram of the first palm structure in an embodiment of the present utility model;

[0031] Figure 8 is a schematic diagram of the second pipe clamp structure in an embodiment of the present utility model;

[0032] Figure 9 Schematic diagram of another size structure of the first palm in the embodiment of the present utility model;

[0033] Figure 10 Schematic diagram of the structure of the second palm in the embodiment of the present utility model;

[0034] Figure 11 Schematic diagram of the connection between the first pipe clamp structure and the base mounting plate in the embodiment of the present utility model;

[0035] Figure 12 Schematic diagram of the connection between the second pipe clamp structure and the base mounting plate in the embodiment of the present utility model;

[0036] Figure 13 Schematic diagram of the connection between the second pipe clamp structure of another size and the base mounting plate in the embodiment of the present utility model;

[0037] Figure 14 Top view of the connection between the first pipe clamp structure and the base mounting plate in the embodiment of the present utility model;

[0038] Figure 15 Schematic diagram of the structure of the base mounting plate in the embodiment of the present utility model;

[0039] Figure 16 Schematic diagram of the second pipe clamp structure connecting two short square pipes in the embodiment of the present utility model;

[0040] Figure 17 Schematic diagram of the first pipe clamp structure connecting two short round pipes in the embodiment of the present utility model. Specific implementation manner

[0041] The following further details the present utility model in conjunction with the accompanying drawings and specific embodiments, which is convenient for clearly understanding the present utility model, but they do not limit the present utility model.

[0042] As Figure 1 shown, an assembled connector between steel pipes of the same and different specifications in this embodiment includes a first pipe clamp structure 4 composed of two semi-circular components, a second pipe clamp structure 6 composed of two "L"-shaped components, a first palm structure composed of two "U"-shaped components, and a second palm structure composed of two "Ω"-shaped components; in this embodiment, the first palm structure includes a first palm structure 5 and a first palm structure 7; the second palm structure includes a second palm structure 14 and a second palm structure 15. Among them, the first palm structure 5 and the first palm structure 7 have the same structure, only the specification sizes are different; the second palm structure 14 and the second palm structure 15 have the same structure, only the specification sizes are different.

[0043] As Figure 2As shown, two semi-circular components are used to fix the first round pipe 1 clamp in the first direction by screws. The first palm structure 5 composed of two "U" - shaped components is used to fix the first square pipe 2 clamp in the second direction by screws, and is connected to the first round pipe 1 and the first square pipe 2 together through a pin shaft 11 passing through the "U" - shaped component, the semi - circular component in the second direction; the first direction and the second direction are perpendicular to each other.

[0044] As Figure 4 shown, two semi - circular components are used to fix the first round pipe 1 clamp in the third direction by screws. Two "Ω" - shaped components are used to fix the second round pipe 16 clamp in the fourth direction by screws, and are connected to the first round pipe 1 and the second round pipe 16 together through a pin shaft 11 passing through the "Ω" - shaped component, the semi - circular component in the fourth direction; the third direction and the fourth direction are perpendicular to each other.

[0045] As Figure 3 shown, two "L" - shaped components are used to fix the first square pipe 2 clamp in the fifth direction by screws. The second palm structure 7 composed of two "U" - shaped components is used to fix the second square pipe 3 clamp in the sixth direction by screws, and is connected to the first square pipe 2 and the second square pipe 3 together through a pin shaft 11 passing through the "U" - shaped component, the "L" - shaped component in the fourth direction, and the fifth direction and the sixth direction are perpendicular to each other.

[0046] As Figure 5 shown, two "L" - shaped components are used to fix the first square pipe 2 clamp in the seventh direction by screws. Two "Ω" - shaped components are used to fix the third round pipe 17 clamp in the eighth direction by screws, and are connected to the first square pipe 2 and the third round pipe 17 together through a pin shaft 11 passing through the "Ω" - shaped component, the "L" - shaped component in the eighth direction. The seventh direction and the eighth direction are perpendicular to each other.

[0047] The specifications and dimensions of the first square pipe 2 and the second square pipe 3 can be the same or different. The specifications and dimensions of the first round pipe 1 and the second round pipe 16 can be the same or different.

[0048] In this embodiment, the dimensions of the first square pipe 2 and the second square pipe 3 are different. The dimensions of the first palm structure 5 and the first palm structure 7 are different (as Figure 7 , Figure 9 shown), as Figure 2 shown, the first pipe clamp structure 4 cooperates with the first palm structure 5 to connect the first round pipe 1 and the first square pipe 2. As Figure 4 shown, the first pipe clamp structure 4 cooperates with the second palm structure 14 to connect the first round pipe 1 and the second round pipe 16. As Figure 3 shown, the second pipe clamp structure 6 cooperates with the first palm structure 7 to connect the first square pipe 2 and the second square pipe 3 with different dimensions. As Figure 5As shown, the second pipe clamp structure 6 and the second palm structure 15 cooperate to connect the first square pipe 2 and the third round pipe 17 with different sizes.

[0049] In some alternative embodiments, such as Figure 4 As shown, the first pipe clamp structure 4 includes two semi-circular components. The two semi-circular components are buckled to form a circular frame structure. First connection bosses 41 are respectively provided on the upper and lower end faces of the semi-circular components. A plurality of first pin holes 9 are opened on the first connection bosses 41. First docking flanges 43 are respectively connected above and below both ends of the first connection bosses 41. First screw through holes 44 and first hexagonal counterbores 46 are opened on the first docking flanges 43. The two semi-circular components are attached together through the first docking flanges 43 and fixedly connected by screws passing through the first screw through holes 44, the first hexagonal counterbores 46 and nuts to form a circular frame structure. A circular hole 42 for hoop-fastening the first round pipe 1 is opened at the center where the two semi-circular components are buckled to form a circular frame structure. First weight-reducing holes 45 are opened on the sides of the two semi-circular components.

[0050] In some alternative embodiments, such as Figure 7 As shown, the second pipe clamp structure 6 includes "L"-shaped components. The two "L"-shaped components are buckled to form a square frame structure. Second connection bosses 61 are respectively provided on the upper and lower end faces of the "L"-shaped components. A plurality of second pin holes 10 are opened on the second connection bosses 61. Second docking flanges 63 are respectively connected above and below both ends of the second connection bosses 61. Second screw through holes 64 are opened on the second docking flanges 63. The two "L"-shaped components are attached together through the second docking flanges 63 and fixedly connected by screws passing through the second screw through holes 64 and nuts to form a square frame structure. A square hole 62 for hoop-fastening the first square pipe 2 is opened at the center where the two "L"-shaped components are buckled to form a square frame structure. Second weight-reducing holes 65 are opened on the sides of the two "L"-shaped components.

[0051] In some alternative embodiments, such as Figure 7 、 Figure 9 As shown, the first palm structure 5 or 7 includes two "U"-shaped components. The "U"-shaped component includes a connecting support plate a1. A first connection flange a2 is provided on one side close to the connecting support plate a1. A third pin hole a3 that cooperates with the first pin hole 9 or the second pin hole 10 is opened on the first connection flange a2. Third docking flanges a4 are connected to the other two symmetrical side faces of the connecting support plate a1. A plurality of second hexagonal counterbores a5 are opened on the third docking flanges a4. Third screw through holes a6 in the direction of the plane where the first connection flange a2 is located are opened in the second hexagonal counterbores a5. Third weight-reducing holes a7 are opened on the side face of the connecting support plate a1.

[0052] In some alternative embodiments, such as Figure 10As shown, the second palm structure includes two "Ω" - shaped components. The "Ω" - shaped component includes a semi - circular side wall 141. On one side of the semi - circular side wall 141, there is a second connecting flange 142. A fourth pin hole 143 that mates with the first pin hole 9 or the second pin hole 10 is provided on the second connecting flange 142. Fourth docking flanges 144 are connected to both sides of the semi - circular side wall 141. A plurality of third hexagonal counter - sunk holes 145 are provided on the fourth docking flanges 144. A fourth screw through - hole 146 in the direction of the plane where the second connecting flange 142 is located is provided in the third hexagonal counter - sunk hole 145. A fourth weight - reducing hole 147 is provided on the semi - circular side wall 141.

[0053] In some alternative embodiments, such as Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the distance between two first pin holes 9 on the same side of the first pipe clamp structure 4 is b. The distance between two second pin holes 10 on the same side of the second pipe clamp structure 6 is b. The distance between two third pin holes a3 on the same side of the first palm structures 5 and 7 is also b, that is, they are all equal, so as to ensure the universality when assembling square pipes or round pipes of different sizes through the connecting parts of the present utility model.

[0054] In some alternative embodiments, such as Figure 6 、 Figure 8 As shown, the height between two first connecting bosses 41 on the upper and lower end faces of the first pipe clamp structure 4 is h1. The height between two second connecting bosses 61 on the upper and lower end faces of the second pipe clamp structure 6 is also h1, so as to ensure the universality when assembling square pipes or round pipes of different sizes through the connecting parts of the present utility model.

[0055] In some alternative embodiments, such as Figure 7 、 Figure 9 、 Figure 10 As shown, the distance between two first connecting flanges a2 of the first palm structures 5 and 7 is h2. The distance between two second connecting flanges 142 of the second palm structures 14 and 15 is h2, so as to ensure the universality when assembling square pipes or round pipes of different sizes through the connecting parts of the present utility model.

[0056] In some alternative embodiments, such as Figure 11 、 Figure 12 、 Figure 13 As shown, the bottom of the first pipe clamp structure 4 or the second pipe clamp structure 6 or the third pipe clamp structure 18 is connected to the base mounting plate 8. Figure 13 The third pipe clamp structure 18 in Figure 12 has different dimensions from the second pipe clamp structure 6 in

[0057] Such as Figure 15As shown, several groups of fifth pin holes 12 with different distances between opposite sides are provided on the four sides of the base mounting plate 8, and are applicable to the first pipe clamp structure 4 or the second pipe clamp structure 6 with different sizes. The several groups of fifth pin holes 12 include two fifth pin holes 12 with a distance L1 between opposite sides, two fifth pin holes 12 with a distance L2 between opposite sides, and two fifth pin holes 12 with a distance L3 between opposite sides; bolt holes 13 are provided at the four corners of the base mounting plate 8 for fixing to the ground, and L1, L2, and L3 are different.

[0058] In some alternative embodiments, as Figure 16 shown, one or two second pipe clamp structures 6 can also be used for butting two short square pipes b1, b2 or two short square pipes b3, b4 into a long square pipe.

[0059] In some alternative embodiments, as Figure 17 shown, one or two first pipe clamp structures 4 can also be used for butting two short round pipes b5, b6 or two short round pipes b7, b8 into a long round pipe.

[0060] In this embodiment, the first pin holes 9 of the first pipe clamp structure 4 and the second pin holes 10 of the second pipe clamp structure 6 are the same in size, and the distances between two first pin holes 9 or two second pin holes 10 on the same side are the same.

[0061] As Figure 14 shown, the distance between the first pin holes 9 on the two opposite sides of the first pipe clamp structure 4 is L. The distance between the first pin holes 9 or the second pin holes 10 on the two opposite sides of the first pipe clamp structure 4 or the second pipe clamp structure 6 is related to the size of the square pipe. If the size of the square pipe is different, the corresponding distance will be different.

[0062] Contents not described in detail in this specification belong to the prior art well-known to those skilled in the art.

Claims

1. An assembled connector between steel pipes of the same and different specifications, characterized in that: It includes a first pipe clamp structure (4) composed of two semi-circular components, a second pipe clamp structure (6) composed of two "L"-shaped components, a first palm structure composed of two "U"-shaped components, and a second palm structure composed of two "Ω"-shaped components; The two semi-circular components are used to hoop the first round pipe (1) and fix it in the first direction by screws. The two "U"-shaped components are used to hoop the first square pipe (2) and fix it in the second direction by screws, and are jointly connected to the first round pipe (1) and the first square pipe (2) through a pin shaft (11) passing through the "U"-shaped component, the semi-circular component in the second direction; The two semi-circular components are used to hoop the first round pipe (1) and fix it in the third direction by screws. The two "Ω"-shaped components are used to hoop the second round pipe (16) and fix it in the fourth direction by screws, and are jointly connected to the first round pipe (1) and the second round pipe (16) through a pin shaft (11) passing through the "Ω"-shaped component, the semi-circular component in the fourth direction; The two "L"-shaped components are used to hoop the first square pipe (2) and fix it in the fifth direction by screws. The two "U"-shaped components are used to hoop the second square pipe (3) and fix it in the sixth direction by screws, and are jointly connected to the first square pipe (2) and the second square pipe (3) through a pin shaft (11) passing through the "U"-shaped component, the "L"-shaped component in the fourth direction; The two "L"-shaped components are used to hoop the first square pipe (2) and fix it in the seventh direction by screws. The two "Ω"-shaped components are used to hoop the third round pipe (17) and fix it in the eighth direction by screws, and are jointly connected to the first square pipe (2) and the third round pipe (17) through a pin shaft (11) passing through the "Ω"-shaped component, the "L"-shaped component in the eighth direction.

2. The assembled connector between steel pipes of the same and different specifications according to claim 1, characterized in that: The first pipe clamp structure (4) includes two semi-circular components. The two semi-circular components are buckled to form a circular frame structure. The upper and lower end faces of the semi-circular component are respectively provided with first connecting bosses (41). A plurality of first pin holes (9) are opened on the first connecting boss (41). The upper and lower ends of the first connecting boss (41) are respectively connected with first docking flanges (43). First screw through holes (44) and first hexagonal counterbores (46) are opened on the first docking flange (43). The two semi-circular components are attached together through the first docking flange (43) and are fixedly connected by screws passing through the first screw through holes (44), the first hexagonal counterbores (46) and nuts to form a circular frame structure. A circular hole (42) for hooping the first round pipe (1) is opened at the center where the two semi-circular components are buckled to form a circular frame structure.

3. The prefabricated connector between steel pipes of the same and different specifications according to claim 2, characterized in that: First weight-reducing holes (45) are opened on the sides of the two semi-circular components.

4. An assembled connector between steel pipes of the same and different specifications according to claim 1, characterized in that: The second pipe clamp structure (6) includes an "L"-shaped component. Two of the "L"-shaped components are buckled to form a square frame structure. Second connecting bosses (61) are respectively provided on the upper end surface and the lower end surface of the "L"-shaped component. A plurality of second pin holes (10) are opened on the second connecting boss (61). Second docking flanges (63) are respectively connected above and below both ends of the second connecting boss (61). Second screw through holes (64) are opened on the second docking flange (63). The two "L"-shaped components are attached together through the second docking flanges (63) and fixedly connected by screws passing through the second screw through holes (64) and nuts to form a square frame structure. A square hole (62) for clamping the first square pipe (2) is opened at the center formed by buckling the two "L"-shaped components to form a square frame structure.

5. The prefabricated connector between steel pipes of the same and different specifications according to claim 4, characterized in that: Second weight-reducing holes (65) are opened on the sides of the two "L"-shaped components.

6. An assembled connector between steel pipes of the same and different specifications according to claim 1, characterized in that: The first palm structure includes two "U"-shaped components. The "U"-shaped component includes a connecting support plate (a1). A first connecting flange (a2) is provided on one side close to the connecting support plate (a1). A third pin hole (a3) matching with the first pin hole (9) or the second pin hole (10) is opened on the first connecting flange (a2). Third docking flanges (a4) are connected to the other two symmetrical sides of the connecting support plate (a1). A plurality of second hexagonal counterbores (a5) are opened on the third docking flange (a4). Third screw through holes (a6) are opened in the second hexagonal counterbores (a5) along the plane direction where the first connecting flange (a2) is located. Third weight-reducing holes (a7) are opened on the side of the connecting support plate (a1).

7. An assembled connector between steel pipes of the same and different specifications according to claim 1, characterized in that: The second palm structure includes two "Ω"-shaped components. The "Ω"-shaped component includes a semi-circular side wall (141). A second connecting flange (142) is provided on one side of the semi-circular side wall (141). A fourth pin hole (143) matching with the first pin hole (9) or the second pin hole (10) is opened on the second connecting flange (142). Fourth docking flanges (144) are connected to both sides of the semi-circular side wall (141). A plurality of third hexagonal counterbores (145) are opened on the fourth docking flange (144). Fourth screw through holes (146) are opened in the third hexagonal counterbores (145) along the plane direction where the second connecting flange (142) is located. Fourth weight-reducing holes (147) are opened on the semi-circular side wall (141).

8. An assembled connector between steel pipes of the same and different specifications according to claim 1, characterized in that: The bottom of the first pipe clamp structure (4) or the second pipe clamp structure (6) is connected to a base mounting plate (8).

9. An assembled connector between steel pipes of the same and different specifications according to claim 8, characterized in that: Several groups of fifth pin holes (12) with different distances between opposite sides are provided on the four sides of the base mounting plate (8). The several groups of fifth pin holes (12) include two fifth pin holes (12) with a distance L1 between opposite sides, two fifth pin holes (12) with a distance L2 between opposite sides, and two fifth pin holes (12) with a distance L3. Bolt holes (13) are provided at the four corners of the base mounting plate (8) for fixing to the ground.

10. An assembled connector between steel pipes of the same and different specifications according to claim 1, characterized in that: The first direction is perpendicular to the second direction; the third direction is perpendicular to the fourth direction; the fifth direction is perpendicular to the sixth direction; the seventh direction is perpendicular to the eighth direction.

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